Thu, 13 Jun 2013 22:02:40 -0700
8014431: cleanup warnings indicated by the -Wunused-value compiler option on linux
Reviewed-by: dholmes, coleenp
Contributed-by: jeremymanson@google.com, calvin.cheung@oracle.com
1 /*
2 * Copyright (c) 1997, 2013, 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/thread.inline.hpp"
51 #include "runtime/vframe.hpp"
52 #include "utilities/preserveException.hpp"
54 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
55 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
57 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
58 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
60 InjectedField JavaClasses::_injected_fields[] = {
61 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
62 };
64 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
65 return _injected_fields[id].compute_offset();
66 }
69 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
70 *field_count = 0;
72 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
73 if (sid == vmSymbols::NO_SID) {
74 // Only well known classes can inject fields
75 return NULL;
76 }
78 int count = 0;
79 int start = -1;
81 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
82 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
83 count++; \
84 if (start == -1) start = klass##_##name##_enum; \
85 }
86 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
87 #undef LOOKUP_INJECTED_FIELD
89 if (start != -1) {
90 *field_count = count;
91 return _injected_fields + start;
92 }
93 return NULL;
94 }
97 static bool find_field(InstanceKlass* ik,
98 Symbol* name_symbol, Symbol* signature_symbol,
99 fieldDescriptor* fd,
100 bool allow_super = false) {
101 if (allow_super)
102 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
103 else
104 return ik->find_local_field(name_symbol, signature_symbol, fd);
105 }
107 // Helpful routine for computing field offsets at run time rather than hardcoding them
108 static void
109 compute_offset(int &dest_offset,
110 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
111 bool allow_super = false) {
112 fieldDescriptor fd;
113 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
114 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
115 ResourceMark rm;
116 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
117 #ifndef PRODUCT
118 klass_oop->print();
119 tty->print_cr("all fields:");
120 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
121 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
122 }
123 #endif //PRODUCT
124 fatal("Invalid layout of preloaded class");
125 }
126 dest_offset = fd.offset();
127 }
129 // Same as above but for "optional" offsets that might not be present in certain JDK versions
130 static void
131 compute_optional_offset(int& dest_offset,
132 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
133 bool allow_super = false) {
134 fieldDescriptor fd;
135 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
136 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
137 dest_offset = fd.offset();
138 }
139 }
142 int java_lang_String::value_offset = 0;
143 int java_lang_String::offset_offset = 0;
144 int java_lang_String::count_offset = 0;
145 int java_lang_String::hash_offset = 0;
147 bool java_lang_String::initialized = false;
149 void java_lang_String::compute_offsets() {
150 assert(!initialized, "offsets should be initialized only once");
152 Klass* k = SystemDictionary::String_klass();
153 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
154 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
155 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
156 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
158 initialized = true;
159 }
161 Handle java_lang_String::basic_create(int length, TRAPS) {
162 assert(initialized, "Must be initialized");
163 // Create the String object first, so there's a chance that the String
164 // and the char array it points to end up in the same cache line.
165 oop obj;
166 obj = InstanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
168 // Create the char array. The String object must be handlized here
169 // because GC can happen as a result of the allocation attempt.
170 Handle h_obj(THREAD, obj);
171 typeArrayOop buffer;
172 buffer = oopFactory::new_charArray(length, CHECK_NH);
174 // Point the String at the char array
175 obj = h_obj();
176 set_value(obj, buffer);
177 // No need to zero the offset, allocation zero'ed the entire String object
178 assert(offset(obj) == 0, "initial String offset should be zero");
179 //set_offset(obj, 0);
180 set_count(obj, length);
182 return h_obj;
183 }
185 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
186 Handle h_obj = basic_create(length, CHECK_NH);
187 typeArrayOop buffer = value(h_obj());
188 for (int index = 0; index < length; index++) {
189 buffer->char_at_put(index, unicode[index]);
190 }
191 return h_obj;
192 }
194 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
195 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
196 return h_obj();
197 }
199 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
200 if (utf8_str == NULL) {
201 return Handle();
202 }
203 int length = UTF8::unicode_length(utf8_str);
204 Handle h_obj = basic_create(length, CHECK_NH);
205 if (length > 0) {
206 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
207 }
208 return h_obj;
209 }
211 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
212 Handle h_obj = create_from_str(utf8_str, CHECK_0);
213 return h_obj();
214 }
216 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
217 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
218 Handle h_obj = basic_create(length, CHECK_NH);
219 if (length > 0) {
220 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
221 }
222 return h_obj;
223 }
225 // Converts a C string to a Java String based on current encoding
226 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
227 assert(str != NULL, "bad arguments");
229 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
230 static to_java_string_fn_t _to_java_string_fn = NULL;
232 if (_to_java_string_fn == NULL) {
233 void *lib_handle = os::native_java_library();
234 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
235 if (_to_java_string_fn == NULL) {
236 fatal("NewStringPlatform missing");
237 }
238 }
240 jstring js = NULL;
241 { JavaThread* thread = (JavaThread*)THREAD;
242 assert(thread->is_Java_thread(), "must be java thread");
243 HandleMark hm(thread);
244 ThreadToNativeFromVM ttn(thread);
245 js = (_to_java_string_fn)(thread->jni_environment(), str);
246 }
247 return Handle(THREAD, JNIHandles::resolve(js));
248 }
250 // Converts a Java String to a native C string that can be used for
251 // native OS calls.
252 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
254 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
255 static to_platform_string_fn_t _to_platform_string_fn = NULL;
257 if (_to_platform_string_fn == NULL) {
258 void *lib_handle = os::native_java_library();
259 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
260 if (_to_platform_string_fn == NULL) {
261 fatal("GetStringPlatformChars missing");
262 }
263 }
265 char *native_platform_string;
266 { JavaThread* thread = (JavaThread*)THREAD;
267 assert(thread->is_Java_thread(), "must be java thread");
268 JNIEnv *env = thread->jni_environment();
269 jstring js = (jstring) JNIHandles::make_local(env, java_string());
270 bool is_copy;
271 HandleMark hm(thread);
272 ThreadToNativeFromVM ttn(thread);
273 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
274 assert(is_copy == JNI_TRUE, "is_copy value changed");
275 JNIHandles::destroy_local(js);
276 }
277 return native_platform_string;
278 }
280 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
281 oop obj = java_string();
282 // Typical usage is to convert all '/' to '.' in string.
283 typeArrayOop value = java_lang_String::value(obj);
284 int offset = java_lang_String::offset(obj);
285 int length = java_lang_String::length(obj);
287 // First check if any from_char exist
288 int index; // Declared outside, used later
289 for (index = 0; index < length; index++) {
290 if (value->char_at(index + offset) == from_char) {
291 break;
292 }
293 }
294 if (index == length) {
295 // No from_char, so do not copy.
296 return java_string;
297 }
299 // Create new UNICODE buffer. Must handlize value because GC
300 // may happen during String and char array creation.
301 typeArrayHandle h_value(THREAD, value);
302 Handle string = basic_create(length, CHECK_NH);
304 typeArrayOop from_buffer = h_value();
305 typeArrayOop to_buffer = java_lang_String::value(string());
307 // Copy contents
308 for (index = 0; index < length; index++) {
309 jchar c = from_buffer->char_at(index + offset);
310 if (c == from_char) {
311 c = to_char;
312 }
313 to_buffer->char_at_put(index, c);
314 }
315 return string;
316 }
318 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
319 typeArrayOop value = java_lang_String::value(java_string);
320 int offset = java_lang_String::offset(java_string);
321 length = java_lang_String::length(java_string);
323 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
324 if (result != NULL) {
325 for (int index = 0; index < length; index++) {
326 result[index] = value->char_at(index + offset);
327 }
328 } else {
329 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
330 }
331 return result;
332 }
334 unsigned int java_lang_String::hash_code(oop java_string) {
335 int length = java_lang_String::length(java_string);
336 // Zero length string will hash to zero with String.hashCode() function.
337 if (length == 0) return 0;
339 typeArrayOop value = java_lang_String::value(java_string);
340 int offset = java_lang_String::offset(java_string);
341 return java_lang_String::hash_code(value->char_at_addr(offset), length);
342 }
344 char* java_lang_String::as_quoted_ascii(oop java_string) {
345 typeArrayOop value = java_lang_String::value(java_string);
346 int offset = java_lang_String::offset(java_string);
347 int length = java_lang_String::length(java_string);
349 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
350 if (base == NULL) return NULL;
352 int result_length = UNICODE::quoted_ascii_length(base, length) + 1;
353 char* result = NEW_RESOURCE_ARRAY(char, result_length);
354 UNICODE::as_quoted_ascii(base, length, result, result_length);
355 assert(result_length >= length + 1, "must not be shorter");
356 assert(result_length == (int)strlen(result) + 1, "must match");
357 return result;
358 }
360 unsigned int java_lang_String::hash_string(oop java_string) {
361 int length = java_lang_String::length(java_string);
362 // Zero length string doesn't hash necessarily hash to zero.
363 if (length == 0) {
364 return StringTable::hash_string(NULL, 0);
365 }
367 typeArrayOop value = java_lang_String::value(java_string);
368 int offset = java_lang_String::offset(java_string);
369 return StringTable::hash_string(value->char_at_addr(offset), length);
370 }
372 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
373 oop obj = java_string();
374 typeArrayOop value = java_lang_String::value(obj);
375 int offset = java_lang_String::offset(obj);
376 int length = java_lang_String::length(obj);
377 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
378 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
379 return sym;
380 }
382 Symbol* java_lang_String::as_symbol_or_null(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* base = (length == 0) ? NULL : value->char_at_addr(offset);
387 return SymbolTable::probe_unicode(base, length);
388 }
391 int java_lang_String::utf8_length(oop java_string) {
392 typeArrayOop value = java_lang_String::value(java_string);
393 int offset = java_lang_String::offset(java_string);
394 int length = java_lang_String::length(java_string);
395 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
396 return UNICODE::utf8_length(position, length);
397 }
399 char* java_lang_String::as_utf8_string(oop java_string) {
400 typeArrayOop value = java_lang_String::value(java_string);
401 int offset = java_lang_String::offset(java_string);
402 int length = java_lang_String::length(java_string);
403 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
404 return UNICODE::as_utf8(position, length);
405 }
407 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
408 typeArrayOop value = java_lang_String::value(java_string);
409 int offset = java_lang_String::offset(java_string);
410 int length = java_lang_String::length(java_string);
411 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
412 return UNICODE::as_utf8(position, length, buf, buflen);
413 }
415 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
416 typeArrayOop value = java_lang_String::value(java_string);
417 int offset = java_lang_String::offset(java_string);
418 int length = java_lang_String::length(java_string);
419 assert(start + len <= length, "just checking");
420 jchar* position = value->char_at_addr(offset + start);
421 return UNICODE::as_utf8(position, len);
422 }
424 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
425 assert(java_string->klass() == SystemDictionary::String_klass(),
426 "must be java_string");
427 typeArrayOop value = java_lang_String::value(java_string);
428 int offset = java_lang_String::offset(java_string);
429 int length = java_lang_String::length(java_string);
430 if (length != len) {
431 return false;
432 }
433 for (int i = 0; i < len; i++) {
434 if (value->char_at(i + offset) != chars[i]) {
435 return false;
436 }
437 }
438 return true;
439 }
441 void java_lang_String::print(Handle java_string, outputStream* st) {
442 oop obj = java_string();
443 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
444 typeArrayOop value = java_lang_String::value(obj);
445 int offset = java_lang_String::offset(obj);
446 int length = java_lang_String::length(obj);
448 int end = MIN2(length, 100);
449 if (value == NULL) {
450 // This can happen if, e.g., printing a String
451 // object before its initializer has been called
452 st->print_cr("NULL");
453 } else {
454 st->print("\"");
455 for (int index = 0; index < length; index++) {
456 st->print("%c", value->char_at(index + offset));
457 }
458 st->print("\"");
459 }
460 }
462 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
463 Handle mirror (THREAD, fd->field_holder()->java_mirror());
464 assert(mirror.not_null() && fd->is_static(), "just checking");
465 if (fd->has_initial_value()) {
466 BasicType t = fd->field_type();
467 switch (t) {
468 case T_BYTE:
469 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
470 break;
471 case T_BOOLEAN:
472 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
473 break;
474 case T_CHAR:
475 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
476 break;
477 case T_SHORT:
478 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
479 break;
480 case T_INT:
481 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
482 break;
483 case T_FLOAT:
484 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
485 break;
486 case T_DOUBLE:
487 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
488 break;
489 case T_LONG:
490 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
491 break;
492 case T_OBJECT:
493 {
494 #ifdef ASSERT
495 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
496 assert(fd->signature() == sym, "just checking");
497 #endif
498 oop string = fd->string_initial_value(CHECK);
499 mirror()->obj_field_put(fd->offset(), string);
500 }
501 break;
502 default:
503 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
504 "Illegal ConstantValue attribute in class file");
505 }
506 }
507 }
510 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
511 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
513 // If the offset was read from the shared archive, it was fixed up already
514 if (!k->is_shared()) {
515 if (k->oop_is_instance()) {
516 // During bootstrap, java.lang.Class wasn't loaded so static field
517 // offsets were computed without the size added it. Go back and
518 // update all the static field offsets to included the size.
519 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
520 if (fs.access_flags().is_static()) {
521 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
522 fs.set_offset(real_offset);
523 }
524 }
525 }
526 }
527 create_mirror(k, Handle(NULL), CHECK);
528 }
530 oop java_lang_Class::create_mirror(KlassHandle k, Handle protection_domain, TRAPS) {
531 assert(k->java_mirror() == NULL, "should only assign mirror once");
532 // Use this moment of initialization to cache modifier_flags also,
533 // to support Class.getModifiers(). Instance classes recalculate
534 // the cached flags after the class file is parsed, but before the
535 // class is put into the system dictionary.
536 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
537 k->set_modifier_flags(computed_modifiers);
538 // Class_klass has to be loaded because it is used to allocate
539 // the mirror.
540 if (SystemDictionary::Class_klass_loaded()) {
541 // Allocate mirror (java.lang.Class instance)
542 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
544 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
545 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
547 // It might also have a component mirror. This mirror must already exist.
548 if (k->oop_is_array()) {
549 Handle comp_mirror;
550 if (k->oop_is_typeArray()) {
551 BasicType type = TypeArrayKlass::cast(k())->element_type();
552 comp_mirror = Universe::java_mirror(type);
553 } else {
554 assert(k->oop_is_objArray(), "Must be");
555 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
556 assert(element_klass != NULL, "Must have an element klass");
557 comp_mirror = element_klass->java_mirror();
558 }
559 assert(comp_mirror.not_null(), "must have a mirror");
561 // Two-way link between the array klass and its component mirror:
562 ArrayKlass::cast(k())->set_component_mirror(comp_mirror());
563 set_array_klass(comp_mirror(), k());
564 } else {
565 assert(k->oop_is_instance(), "Must be");
567 // Allocate a simple java object for a lock.
568 // This needs to be a java object because during class initialization
569 // it can be held across a java call.
570 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_NULL);
571 set_init_lock(mirror(), r);
573 // Set protection domain also
574 set_protection_domain(mirror(), protection_domain());
576 // Initialize static fields
577 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
578 }
579 return mirror();
580 } else {
581 if (fixup_mirror_list() == NULL) {
582 GrowableArray<Klass*>* list =
583 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
584 set_fixup_mirror_list(list);
585 }
586 fixup_mirror_list()->push(k());
587 return NULL;
588 }
589 }
593 int java_lang_Class::oop_size(oop java_class) {
594 assert(_oop_size_offset != 0, "must be set");
595 return java_class->int_field(_oop_size_offset);
596 }
597 void java_lang_Class::set_oop_size(oop java_class, int size) {
598 assert(_oop_size_offset != 0, "must be set");
599 java_class->int_field_put(_oop_size_offset, size);
600 }
601 int java_lang_Class::static_oop_field_count(oop java_class) {
602 assert(_static_oop_field_count_offset != 0, "must be set");
603 return java_class->int_field(_static_oop_field_count_offset);
604 }
605 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
606 assert(_static_oop_field_count_offset != 0, "must be set");
607 java_class->int_field_put(_static_oop_field_count_offset, size);
608 }
610 oop java_lang_Class::protection_domain(oop java_class) {
611 assert(_protection_domain_offset != 0, "must be set");
612 return java_class->obj_field(_protection_domain_offset);
613 }
614 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
615 assert(_protection_domain_offset != 0, "must be set");
616 java_class->obj_field_put(_protection_domain_offset, pd);
617 }
619 oop java_lang_Class::init_lock(oop java_class) {
620 assert(_init_lock_offset != 0, "must be set");
621 return java_class->obj_field(_init_lock_offset);
622 }
623 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
624 assert(_init_lock_offset != 0, "must be set");
625 java_class->obj_field_put(_init_lock_offset, init_lock);
626 }
628 objArrayOop java_lang_Class::signers(oop java_class) {
629 assert(_signers_offset != 0, "must be set");
630 return (objArrayOop)java_class->obj_field(_signers_offset);
631 }
632 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
633 assert(_signers_offset != 0, "must be set");
634 java_class->obj_field_put(_signers_offset, (oop)signers);
635 }
638 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
639 // This should be improved by adding a field at the Java level or by
640 // introducing a new VM klass (see comment in ClassFileParser)
641 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
642 if (type != T_VOID) {
643 Klass* aklass = Universe::typeArrayKlassObj(type);
644 assert(aklass != NULL, "correct bootstrap");
645 set_array_klass(java_class, aklass);
646 }
647 #ifdef ASSERT
648 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
649 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
650 #endif
651 return java_class;
652 }
655 Klass* java_lang_Class::as_Klass(oop java_class) {
656 //%note memory_2
657 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
658 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
659 assert(k == NULL || k->is_klass(), "type check");
660 return k;
661 }
664 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
665 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
666 java_class->metadata_field_put(_klass_offset, klass);
667 }
670 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
671 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
672 Symbol* name = NULL;
673 bool is_instance = false;
674 if (is_primitive(java_class)) {
675 name = vmSymbols::type_signature(primitive_type(java_class));
676 } else {
677 Klass* k = as_Klass(java_class);
678 is_instance = k->oop_is_instance();
679 name = k->name();
680 }
681 if (name == NULL) {
682 st->print("<null>");
683 return;
684 }
685 if (is_instance) st->print("L");
686 st->write((char*) name->base(), (int) name->utf8_length());
687 if (is_instance) st->print(";");
688 }
690 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
691 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
692 Symbol* name;
693 if (is_primitive(java_class)) {
694 name = vmSymbols::type_signature(primitive_type(java_class));
695 // Because this can create a new symbol, the caller has to decrement
696 // the refcount, so make adjustment here and below for symbols returned
697 // that are not created or incremented due to a successful lookup.
698 name->increment_refcount();
699 } else {
700 Klass* k = as_Klass(java_class);
701 if (!k->oop_is_instance()) {
702 name = k->name();
703 name->increment_refcount();
704 } else {
705 ResourceMark rm;
706 const char* sigstr = k->signature_name();
707 int siglen = (int) strlen(sigstr);
708 if (!intern_if_not_found) {
709 name = SymbolTable::probe(sigstr, siglen);
710 } else {
711 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
712 }
713 }
714 }
715 return name;
716 }
719 Klass* java_lang_Class::array_klass(oop java_class) {
720 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
721 assert(k == NULL || k->is_klass() && k->oop_is_array(), "should be array klass");
722 return k;
723 }
726 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
727 assert(klass->is_klass() && klass->oop_is_array(), "should be array klass");
728 java_class->metadata_field_put(_array_klass_offset, klass);
729 }
732 bool java_lang_Class::is_primitive(oop java_class) {
733 // should assert:
734 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
735 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
737 #ifdef ASSERT
738 if (is_primitive) {
739 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
740 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
741 "Should be either the T_VOID primitive or a java primitive");
742 }
743 #endif
745 return is_primitive;
746 }
749 BasicType java_lang_Class::primitive_type(oop java_class) {
750 assert(java_lang_Class::is_primitive(java_class), "just checking");
751 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
752 BasicType type = T_VOID;
753 if (ak != NULL) {
754 // Note: create_basic_type_mirror above initializes ak to a non-null value.
755 type = ArrayKlass::cast(ak)->element_type();
756 } else {
757 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
758 }
759 assert(Universe::java_mirror(type) == java_class, "must be consistent");
760 return type;
761 }
763 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
764 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
765 if (is_primitive(java_class)) {
766 if (reference_klass != NULL)
767 (*reference_klass) = NULL;
768 return primitive_type(java_class);
769 } else {
770 if (reference_klass != NULL)
771 (*reference_klass) = as_Klass(java_class);
772 return T_OBJECT;
773 }
774 }
777 oop java_lang_Class::primitive_mirror(BasicType t) {
778 oop mirror = Universe::java_mirror(t);
779 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
780 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
781 return mirror;
782 }
784 bool java_lang_Class::offsets_computed = false;
785 int java_lang_Class::classRedefinedCount_offset = -1;
787 void java_lang_Class::compute_offsets() {
788 assert(!offsets_computed, "offsets should be initialized only once");
789 offsets_computed = true;
791 Klass* klass_oop = SystemDictionary::Class_klass();
792 // The classRedefinedCount field is only present starting in 1.5,
793 // so don't go fatal.
794 compute_optional_offset(classRedefinedCount_offset,
795 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
797 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
798 }
800 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
801 if (!JDK_Version::is_gte_jdk15x_version()
802 || classRedefinedCount_offset == -1) {
803 // The classRedefinedCount field is only present starting in 1.5.
804 // If we don't have an offset for it then just return -1 as a marker.
805 return -1;
806 }
808 return the_class_mirror->int_field(classRedefinedCount_offset);
809 }
811 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
812 if (!JDK_Version::is_gte_jdk15x_version()
813 || classRedefinedCount_offset == -1) {
814 // The classRedefinedCount field is only present starting in 1.5.
815 // If we don't have an offset for it then nothing to set.
816 return;
817 }
819 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
820 }
823 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
824 // platform thread structure, and a eetop offset which was used for thread
825 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
826 // merged, so in the HotSpot VM we just use the eetop field for the thread
827 // instead of the privateInfo_offset.
828 //
829 // Note: The stackSize field is only present starting in 1.4.
831 int java_lang_Thread::_name_offset = 0;
832 int java_lang_Thread::_group_offset = 0;
833 int java_lang_Thread::_contextClassLoader_offset = 0;
834 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
835 int java_lang_Thread::_priority_offset = 0;
836 int java_lang_Thread::_eetop_offset = 0;
837 int java_lang_Thread::_daemon_offset = 0;
838 int java_lang_Thread::_stillborn_offset = 0;
839 int java_lang_Thread::_stackSize_offset = 0;
840 int java_lang_Thread::_tid_offset = 0;
841 int java_lang_Thread::_thread_status_offset = 0;
842 int java_lang_Thread::_park_blocker_offset = 0;
843 int java_lang_Thread::_park_event_offset = 0 ;
846 void java_lang_Thread::compute_offsets() {
847 assert(_group_offset == 0, "offsets should be initialized only once");
849 Klass* k = SystemDictionary::Thread_klass();
850 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
851 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
852 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
853 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
854 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
855 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
856 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
857 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
858 // The stackSize field is only present starting in 1.4, so don't go fatal.
859 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
860 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
861 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
862 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
863 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
864 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
865 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
866 vmSymbols::long_signature());
867 }
870 JavaThread* java_lang_Thread::thread(oop java_thread) {
871 return (JavaThread*)java_thread->address_field(_eetop_offset);
872 }
875 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
876 java_thread->address_field_put(_eetop_offset, (address)thread);
877 }
880 typeArrayOop java_lang_Thread::name(oop java_thread) {
881 oop name = java_thread->obj_field(_name_offset);
882 assert(name == NULL || (name->is_typeArray() && TypeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
883 return typeArrayOop(name);
884 }
887 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
888 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
889 java_thread->obj_field_put(_name_offset, name);
890 }
893 ThreadPriority java_lang_Thread::priority(oop java_thread) {
894 return (ThreadPriority)java_thread->int_field(_priority_offset);
895 }
898 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
899 java_thread->int_field_put(_priority_offset, priority);
900 }
903 oop java_lang_Thread::threadGroup(oop java_thread) {
904 return java_thread->obj_field(_group_offset);
905 }
908 bool java_lang_Thread::is_stillborn(oop java_thread) {
909 return java_thread->bool_field(_stillborn_offset) != 0;
910 }
913 // We never have reason to turn the stillborn bit off
914 void java_lang_Thread::set_stillborn(oop java_thread) {
915 java_thread->bool_field_put(_stillborn_offset, true);
916 }
919 bool java_lang_Thread::is_alive(oop java_thread) {
920 JavaThread* thr = java_lang_Thread::thread(java_thread);
921 return (thr != NULL);
922 }
925 bool java_lang_Thread::is_daemon(oop java_thread) {
926 return java_thread->bool_field(_daemon_offset) != 0;
927 }
930 void java_lang_Thread::set_daemon(oop java_thread) {
931 java_thread->bool_field_put(_daemon_offset, true);
932 }
934 oop java_lang_Thread::context_class_loader(oop java_thread) {
935 return java_thread->obj_field(_contextClassLoader_offset);
936 }
938 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
939 return java_thread->obj_field(_inheritedAccessControlContext_offset);
940 }
943 jlong java_lang_Thread::stackSize(oop java_thread) {
944 // The stackSize field is only present starting in 1.4
945 if (_stackSize_offset > 0) {
946 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
947 return java_thread->long_field(_stackSize_offset);
948 } else {
949 return 0;
950 }
951 }
953 // Write the thread status value to threadStatus field in java.lang.Thread java class.
954 void java_lang_Thread::set_thread_status(oop java_thread,
955 java_lang_Thread::ThreadStatus status) {
956 // The threadStatus is only present starting in 1.5
957 if (_thread_status_offset > 0) {
958 java_thread->int_field_put(_thread_status_offset, status);
959 }
960 }
962 // Read thread status value from threadStatus field in java.lang.Thread java class.
963 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
964 assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() ||
965 JavaThread::current()->thread_state() == _thread_in_vm,
966 "Java Thread is not running in vm");
967 // The threadStatus is only present starting in 1.5
968 if (_thread_status_offset > 0) {
969 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
970 } else {
971 // All we can easily figure out is if it is alive, but that is
972 // enough info for a valid unknown status.
973 // These aren't restricted to valid set ThreadStatus values, so
974 // use JVMTI values and cast.
975 JavaThread* thr = java_lang_Thread::thread(java_thread);
976 if (thr == NULL) {
977 // the thread hasn't run yet or is in the process of exiting
978 return NEW;
979 }
980 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
981 }
982 }
985 jlong java_lang_Thread::thread_id(oop java_thread) {
986 // The thread ID field is only present starting in 1.5
987 if (_tid_offset > 0) {
988 return java_thread->long_field(_tid_offset);
989 } else {
990 return 0;
991 }
992 }
994 oop java_lang_Thread::park_blocker(oop java_thread) {
995 assert(JDK_Version::current().supports_thread_park_blocker() &&
996 _park_blocker_offset != 0, "Must support parkBlocker field");
998 if (_park_blocker_offset > 0) {
999 return java_thread->obj_field(_park_blocker_offset);
1000 }
1002 return NULL;
1003 }
1005 jlong java_lang_Thread::park_event(oop java_thread) {
1006 if (_park_event_offset > 0) {
1007 return java_thread->long_field(_park_event_offset);
1008 }
1009 return 0;
1010 }
1012 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1013 if (_park_event_offset > 0) {
1014 java_thread->long_field_put(_park_event_offset, ptr);
1015 return true;
1016 }
1017 return false;
1018 }
1021 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1022 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
1023 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1024 switch (status) {
1025 case NEW : return "NEW";
1026 case RUNNABLE : return "RUNNABLE";
1027 case SLEEPING : return "TIMED_WAITING (sleeping)";
1028 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1029 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1030 case PARKED : return "WAITING (parking)";
1031 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1032 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1033 case TERMINATED : return "TERMINATED";
1034 default : return "UNKNOWN";
1035 };
1036 }
1037 int java_lang_ThreadGroup::_parent_offset = 0;
1038 int java_lang_ThreadGroup::_name_offset = 0;
1039 int java_lang_ThreadGroup::_threads_offset = 0;
1040 int java_lang_ThreadGroup::_groups_offset = 0;
1041 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1042 int java_lang_ThreadGroup::_destroyed_offset = 0;
1043 int java_lang_ThreadGroup::_daemon_offset = 0;
1044 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1045 int java_lang_ThreadGroup::_nthreads_offset = 0;
1046 int java_lang_ThreadGroup::_ngroups_offset = 0;
1048 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1049 assert(java_thread_group->is_oop(), "thread group must be oop");
1050 return java_thread_group->obj_field(_parent_offset);
1051 }
1053 // ("name as oop" accessor is not necessary)
1055 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1056 oop name = java_thread_group->obj_field(_name_offset);
1057 // ThreadGroup.name can be null
1058 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1059 }
1061 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1062 assert(java_thread_group->is_oop(), "thread group must be oop");
1063 return java_thread_group->int_field(_nthreads_offset);
1064 }
1066 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1067 oop threads = java_thread_group->obj_field(_threads_offset);
1068 assert(threads != NULL, "threadgroups should have threads");
1069 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1070 return objArrayOop(threads);
1071 }
1073 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1074 assert(java_thread_group->is_oop(), "thread group must be oop");
1075 return java_thread_group->int_field(_ngroups_offset);
1076 }
1078 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1079 oop groups = java_thread_group->obj_field(_groups_offset);
1080 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1081 return objArrayOop(groups);
1082 }
1084 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1085 assert(java_thread_group->is_oop(), "thread group must be oop");
1086 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1087 }
1089 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1090 assert(java_thread_group->is_oop(), "thread group must be oop");
1091 return java_thread_group->bool_field(_destroyed_offset) != 0;
1092 }
1094 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1095 assert(java_thread_group->is_oop(), "thread group must be oop");
1096 return java_thread_group->bool_field(_daemon_offset) != 0;
1097 }
1099 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1100 assert(java_thread_group->is_oop(), "thread group must be oop");
1101 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1102 }
1104 void java_lang_ThreadGroup::compute_offsets() {
1105 assert(_parent_offset == 0, "offsets should be initialized only once");
1107 Klass* k = SystemDictionary::ThreadGroup_klass();
1109 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1110 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1111 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1112 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1113 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1114 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1115 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1116 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1117 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1118 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1119 }
1121 oop java_lang_Throwable::unassigned_stacktrace() {
1122 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Throwable_klass());
1123 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1124 if (UseCompressedOops) {
1125 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1126 } else {
1127 return oopDesc::load_decode_heap_oop((oop*)addr);
1128 }
1129 }
1131 oop java_lang_Throwable::backtrace(oop throwable) {
1132 return throwable->obj_field_acquire(backtrace_offset);
1133 }
1136 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1137 throwable->release_obj_field_put(backtrace_offset, value);
1138 }
1141 oop java_lang_Throwable::message(oop throwable) {
1142 return throwable->obj_field(detailMessage_offset);
1143 }
1146 oop java_lang_Throwable::message(Handle throwable) {
1147 return throwable->obj_field(detailMessage_offset);
1148 }
1151 void java_lang_Throwable::set_message(oop throwable, oop value) {
1152 throwable->obj_field_put(detailMessage_offset, value);
1153 }
1156 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1157 throwable->obj_field_put(stackTrace_offset, st_element_array);
1158 }
1160 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1161 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1162 set_stacktrace(throwable, NULL);
1163 }
1166 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1167 ResourceMark rm;
1168 Klass* k = throwable->klass();
1169 assert(k != NULL, "just checking");
1170 st->print("%s", InstanceKlass::cast(k)->external_name());
1171 oop msg = message(throwable);
1172 if (msg != NULL) {
1173 st->print(": %s", java_lang_String::as_utf8_string(msg));
1174 }
1175 }
1178 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1179 ResourceMark rm;
1180 Klass* k = throwable->klass();
1181 assert(k != NULL, "just checking");
1182 st->print("%s", InstanceKlass::cast(k)->external_name());
1183 oop msg = message(throwable);
1184 if (msg != NULL) {
1185 st->print(": %s", java_lang_String::as_utf8_string(msg));
1186 }
1187 }
1189 // After this many redefines, the stack trace is unreliable.
1190 const int MAX_VERSION = USHRT_MAX;
1192 // Helper backtrace functions to store bci|version together.
1193 static inline int merge_bci_and_version(int bci, int version) {
1194 // only store u2 for version, checking for overflow.
1195 if (version > USHRT_MAX || version < 0) version = MAX_VERSION;
1196 assert((jushort)bci == bci, "bci should be short");
1197 return build_int_from_shorts(version, bci);
1198 }
1200 static inline int bci_at(unsigned int merged) {
1201 return extract_high_short_from_int(merged);
1202 }
1203 static inline int version_at(unsigned int merged) {
1204 return extract_low_short_from_int(merged);
1205 }
1207 static inline bool version_matches(Method* method, int version) {
1208 return (method->constants()->version() == version && version < MAX_VERSION);
1209 }
1211 static inline int get_line_number(Method* method, int bci) {
1212 int line_number = 0;
1213 if (method->is_native()) {
1214 // Negative value different from -1 below, enabling Java code in
1215 // class java.lang.StackTraceElement to distinguish "native" from
1216 // "no LineNumberTable". JDK tests for -2.
1217 line_number = -2;
1218 } else {
1219 // Returns -1 if no LineNumberTable, and otherwise actual line number
1220 line_number = method->line_number_from_bci(bci);
1221 if (line_number == -1 && ShowHiddenFrames) {
1222 line_number = bci + 1000000;
1223 }
1224 }
1225 return line_number;
1226 }
1228 // This class provides a simple wrapper over the internal structure of
1229 // exception backtrace to insulate users of the backtrace from needing
1230 // to know what it looks like.
1231 class BacktraceBuilder: public StackObj {
1232 private:
1233 Handle _backtrace;
1234 objArrayOop _head;
1235 typeArrayOop _methods;
1236 typeArrayOop _bcis;
1237 objArrayOop _mirrors;
1238 int _index;
1239 No_Safepoint_Verifier _nsv;
1241 public:
1243 enum {
1244 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1245 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1246 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1247 trace_next_offset = java_lang_Throwable::trace_next_offset,
1248 trace_size = java_lang_Throwable::trace_size,
1249 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1250 };
1252 // get info out of chunks
1253 static typeArrayOop get_methods(objArrayHandle chunk) {
1254 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1255 assert(methods != NULL, "method array should be initialized in backtrace");
1256 return methods;
1257 }
1258 static typeArrayOop get_bcis(objArrayHandle chunk) {
1259 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1260 assert(bcis != NULL, "bci array should be initialized in backtrace");
1261 return bcis;
1262 }
1263 static objArrayOop get_mirrors(objArrayHandle chunk) {
1264 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1265 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1266 return mirrors;
1267 }
1269 // constructor for new backtrace
1270 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL) {
1271 expand(CHECK);
1272 _backtrace = _head;
1273 _index = 0;
1274 }
1276 BacktraceBuilder(objArrayHandle backtrace) {
1277 _methods = get_methods(backtrace);
1278 _bcis = get_bcis(backtrace);
1279 _mirrors = get_mirrors(backtrace);
1280 assert(_methods->length() == _bcis->length() &&
1281 _methods->length() == _mirrors->length(),
1282 "method and source information arrays should match");
1284 // head is the preallocated backtrace
1285 _backtrace = _head = backtrace();
1286 _index = 0;
1287 }
1289 void expand(TRAPS) {
1290 objArrayHandle old_head(THREAD, _head);
1291 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1293 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1294 objArrayHandle new_head(THREAD, head);
1296 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1297 typeArrayHandle new_methods(THREAD, methods);
1299 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1300 typeArrayHandle new_bcis(THREAD, bcis);
1302 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1303 objArrayHandle new_mirrors(THREAD, mirrors);
1305 if (!old_head.is_null()) {
1306 old_head->obj_at_put(trace_next_offset, new_head());
1307 }
1308 new_head->obj_at_put(trace_methods_offset, new_methods());
1309 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1310 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1312 _head = new_head();
1313 _methods = new_methods();
1314 _bcis = new_bcis();
1315 _mirrors = new_mirrors();
1316 _index = 0;
1317 }
1319 oop backtrace() {
1320 return _backtrace();
1321 }
1323 inline void push(Method* method, int bci, TRAPS) {
1324 // Smear the -1 bci to 0 since the array only holds unsigned
1325 // shorts. The later line number lookup would just smear the -1
1326 // to a 0 even if it could be recorded.
1327 if (bci == SynchronizationEntryBCI) bci = 0;
1329 if (_index >= trace_chunk_size) {
1330 methodHandle mhandle(THREAD, method);
1331 expand(CHECK);
1332 method = mhandle();
1333 }
1335 _methods->short_at_put(_index, method->method_idnum());
1336 _bcis->int_at_put(_index, merge_bci_and_version(bci, method->constants()->version()));
1338 // We need to save the mirrors in the backtrace to keep the class
1339 // from being unloaded while we still have this stack trace.
1340 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1341 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1342 _index++;
1343 }
1345 };
1347 // Print stack trace element to resource allocated buffer
1348 char* java_lang_Throwable::print_stack_element_to_buffer(Handle mirror,
1349 int method_id, int version, int bci) {
1351 // Get strings and string lengths
1352 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1353 const char* klass_name = holder->external_name();
1354 int buf_len = (int)strlen(klass_name);
1356 // pushing to the stack trace added one.
1357 Method* method = holder->method_with_idnum(method_id);
1358 char* method_name = method->name()->as_C_string();
1359 buf_len += (int)strlen(method_name);
1361 char* source_file_name = NULL;
1362 if (version_matches(method, version)) {
1363 Symbol* source = holder->source_file_name();
1364 if (source != NULL) {
1365 source_file_name = source->as_C_string();
1366 buf_len += (int)strlen(source_file_name);
1367 }
1368 }
1370 // Allocate temporary buffer with extra space for formatting and line number
1371 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1373 // Print stack trace line in buffer
1374 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1376 if (!version_matches(method, version)) {
1377 strcat(buf, "(Redefined)");
1378 } else {
1379 int line_number = get_line_number(method, bci);
1380 if (line_number == -2) {
1381 strcat(buf, "(Native Method)");
1382 } else {
1383 if (source_file_name != NULL && (line_number != -1)) {
1384 // Sourcename and linenumber
1385 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1386 } else if (source_file_name != NULL) {
1387 // Just sourcename
1388 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1389 } else {
1390 // Neither sourcename nor linenumber
1391 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1392 }
1393 nmethod* nm = method->code();
1394 if (WizardMode && nm != NULL) {
1395 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1396 }
1397 }
1398 }
1400 return buf;
1401 }
1403 void java_lang_Throwable::print_stack_element(outputStream *st, Handle mirror,
1404 int method_id, int version, int bci) {
1405 ResourceMark rm;
1406 char* buf = print_stack_element_to_buffer(mirror, method_id, version, bci);
1407 st->print_cr("%s", buf);
1408 }
1410 void java_lang_Throwable::print_stack_element(outputStream *st, methodHandle method, int bci) {
1411 Handle mirror = method->method_holder()->java_mirror();
1412 int method_id = method->method_idnum();
1413 int version = method->constants()->version();
1414 print_stack_element(st, mirror, method_id, version, bci);
1415 }
1417 const char* java_lang_Throwable::no_stack_trace_message() {
1418 return "\t<<no stack trace available>>";
1419 }
1422 // Currently used only for exceptions occurring during startup
1423 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1424 Thread *THREAD = Thread::current();
1425 Handle h_throwable(THREAD, throwable);
1426 while (h_throwable.not_null()) {
1427 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1428 if (result.is_null()) {
1429 st->print_cr(no_stack_trace_message());
1430 return;
1431 }
1433 while (result.not_null()) {
1435 // Get method id, bci, version and mirror from chunk
1436 typeArrayHandle methods (THREAD, BacktraceBuilder::get_methods(result));
1437 typeArrayHandle bcis (THREAD, BacktraceBuilder::get_bcis(result));
1438 objArrayHandle mirrors (THREAD, BacktraceBuilder::get_mirrors(result));
1440 int length = methods()->length();
1441 for (int index = 0; index < length; index++) {
1442 Handle mirror(THREAD, mirrors->obj_at(index));
1443 // NULL mirror means end of stack trace
1444 if (mirror.is_null()) goto handle_cause;
1445 int method = methods->short_at(index);
1446 int version = version_at(bcis->int_at(index));
1447 int bci = bci_at(bcis->int_at(index));
1448 print_stack_element(st, mirror, method, version, bci);
1449 }
1450 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1451 }
1452 handle_cause:
1453 {
1454 EXCEPTION_MARK;
1455 JavaValue cause(T_OBJECT);
1456 JavaCalls::call_virtual(&cause,
1457 h_throwable,
1458 KlassHandle(THREAD, h_throwable->klass()),
1459 vmSymbols::getCause_name(),
1460 vmSymbols::void_throwable_signature(),
1461 THREAD);
1462 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1463 if (HAS_PENDING_EXCEPTION) {
1464 CLEAR_PENDING_EXCEPTION;
1465 h_throwable = Handle();
1466 } else {
1467 h_throwable = Handle(THREAD, (oop) cause.get_jobject());
1468 if (h_throwable.not_null()) {
1469 st->print("Caused by: ");
1470 print(h_throwable, st);
1471 st->cr();
1472 }
1473 }
1474 }
1475 }
1476 }
1478 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1479 if (!StackTraceInThrowable) return;
1480 ResourceMark rm(THREAD);
1482 // Start out by clearing the backtrace for this object, in case the VM
1483 // runs out of memory while allocating the stack trace
1484 set_backtrace(throwable(), NULL);
1485 if (JDK_Version::is_gte_jdk14x_version()) {
1486 // New since 1.4, clear lazily constructed Java level stacktrace if
1487 // refilling occurs
1488 // This is unnecessary in 1.7+ but harmless
1489 clear_stacktrace(throwable());
1490 }
1492 int max_depth = MaxJavaStackTraceDepth;
1493 JavaThread* thread = (JavaThread*)THREAD;
1494 BacktraceBuilder bt(CHECK);
1496 // If there is no Java frame just return the method that was being called
1497 // with bci 0
1498 if (!thread->has_last_Java_frame()) {
1499 if (max_depth >= 1 && method() != NULL) {
1500 bt.push(method(), 0, CHECK);
1501 set_backtrace(throwable(), bt.backtrace());
1502 }
1503 return;
1504 }
1506 // Instead of using vframe directly, this version of fill_in_stack_trace
1507 // basically handles everything by hand. This significantly improved the
1508 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1509 // See bug 6333838 for more details.
1510 // The "ASSERT" here is to verify this method generates the exactly same stack
1511 // trace as utilizing vframe.
1512 #ifdef ASSERT
1513 vframeStream st(thread);
1514 methodHandle st_method(THREAD, st.method());
1515 #endif
1516 int total_count = 0;
1517 RegisterMap map(thread, false);
1518 int decode_offset = 0;
1519 nmethod* nm = NULL;
1520 bool skip_fillInStackTrace_check = false;
1521 bool skip_throwableInit_check = false;
1522 bool skip_hidden = !ShowHiddenFrames;
1524 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1525 Method* method = NULL;
1526 int bci = 0;
1528 // Compiled java method case.
1529 if (decode_offset != 0) {
1530 DebugInfoReadStream stream(nm, decode_offset);
1531 decode_offset = stream.read_int();
1532 method = (Method*)nm->metadata_at(stream.read_int());
1533 bci = stream.read_bci();
1534 } else {
1535 if (fr.is_first_frame()) break;
1536 address pc = fr.pc();
1537 if (fr.is_interpreted_frame()) {
1538 intptr_t bcx = fr.interpreter_frame_bcx();
1539 method = fr.interpreter_frame_method();
1540 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1541 fr = fr.sender(&map);
1542 } else {
1543 CodeBlob* cb = fr.cb();
1544 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1545 // but non nmethod
1546 fr = fr.sender(&map);
1547 if (cb == NULL || !cb->is_nmethod()) {
1548 continue;
1549 }
1550 nm = (nmethod*)cb;
1551 if (nm->method()->is_native()) {
1552 method = nm->method();
1553 bci = 0;
1554 } else {
1555 PcDesc* pd = nm->pc_desc_at(pc);
1556 decode_offset = pd->scope_decode_offset();
1557 // if decode_offset is not equal to 0, it will execute the
1558 // "compiled java method case" at the beginning of the loop.
1559 continue;
1560 }
1561 }
1562 }
1563 #ifdef ASSERT
1564 assert(st_method() == method && st.bci() == bci,
1565 "Wrong stack trace");
1566 st.next();
1567 // vframeStream::method isn't GC-safe so store off a copy
1568 // of the Method* in case we GC.
1569 if (!st.at_end()) {
1570 st_method = st.method();
1571 }
1572 #endif
1574 // the format of the stacktrace will be:
1575 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1576 // - 0 or more <init> methods for the exception class (skipped)
1577 // - rest of the stack
1579 if (!skip_fillInStackTrace_check) {
1580 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1581 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1582 throwable->is_a(method->method_holder())) {
1583 continue;
1584 }
1585 else {
1586 skip_fillInStackTrace_check = true; // gone past them all
1587 }
1588 }
1589 if (!skip_throwableInit_check) {
1590 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1592 // skip <init> methods of the exception class and superclasses
1593 // This is simlar to classic VM.
1594 if (method->name() == vmSymbols::object_initializer_name() &&
1595 throwable->is_a(method->method_holder())) {
1596 continue;
1597 } else {
1598 // there are none or we've seen them all - either way stop checking
1599 skip_throwableInit_check = true;
1600 }
1601 }
1602 if (method->is_hidden()) {
1603 if (skip_hidden) continue;
1604 }
1605 bt.push(method, bci, CHECK);
1606 total_count++;
1607 }
1609 // Put completed stack trace into throwable object
1610 set_backtrace(throwable(), bt.backtrace());
1611 }
1613 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1614 // No-op if stack trace is disabled
1615 if (!StackTraceInThrowable) {
1616 return;
1617 }
1619 // Disable stack traces for some preallocated out of memory errors
1620 if (!Universe::should_fill_in_stack_trace(throwable)) {
1621 return;
1622 }
1624 PRESERVE_EXCEPTION_MARK;
1626 JavaThread* thread = JavaThread::active();
1627 fill_in_stack_trace(throwable, method, thread);
1628 // ignore exceptions thrown during stack trace filling
1629 CLEAR_PENDING_EXCEPTION;
1630 }
1632 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1633 // Allocate stack trace - backtrace is created but not filled in
1635 // No-op if stack trace is disabled
1636 if (!StackTraceInThrowable) return;
1637 BacktraceBuilder bt(CHECK); // creates a backtrace
1638 set_backtrace(throwable(), bt.backtrace());
1639 }
1642 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1643 // Fill in stack trace into preallocated backtrace (no GC)
1645 // No-op if stack trace is disabled
1646 if (!StackTraceInThrowable) return;
1648 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1650 JavaThread* THREAD = JavaThread::current();
1652 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
1653 assert(backtrace.not_null(), "backtrace should have been preallocated");
1655 ResourceMark rm(THREAD);
1656 vframeStream st(THREAD);
1658 BacktraceBuilder bt(backtrace);
1660 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1661 // methods as preallocated errors aren't created by "java" code.
1663 // fill in as much stack trace as possible
1664 typeArrayOop methods = BacktraceBuilder::get_methods(backtrace);
1665 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1666 int chunk_count = 0;
1668 for (;!st.at_end(); st.next()) {
1669 bt.push(st.method(), st.bci(), CHECK);
1670 chunk_count++;
1672 // Bail-out for deep stacks
1673 if (chunk_count >= max_chunks) break;
1674 }
1676 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1677 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1678 // can be removed in a JDK using this JVM version
1679 if (JDK_Version::is_gte_jdk17x_version()) {
1680 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1681 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1682 }
1683 }
1686 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1687 if (throwable == NULL) {
1688 THROW_0(vmSymbols::java_lang_NullPointerException());
1689 }
1690 objArrayOop chunk = objArrayOop(backtrace(throwable));
1691 int depth = 0;
1692 if (chunk != NULL) {
1693 // Iterate over chunks and count full ones
1694 while (true) {
1695 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1696 if (next == NULL) break;
1697 depth += trace_chunk_size;
1698 chunk = next;
1699 }
1700 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1701 // Count element in remaining partial chunk. NULL value for mirror
1702 // marks the end of the stack trace elements that are saved.
1703 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1704 assert(mirrors != NULL, "sanity check");
1705 for (int i = 0; i < mirrors->length(); i++) {
1706 if (mirrors->obj_at(i) == NULL) break;
1707 depth++;
1708 }
1709 }
1710 return depth;
1711 }
1714 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1715 if (throwable == NULL) {
1716 THROW_0(vmSymbols::java_lang_NullPointerException());
1717 }
1718 if (index < 0) {
1719 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1720 }
1721 // Compute how many chunks to skip and index into actual chunk
1722 objArrayOop chunk = objArrayOop(backtrace(throwable));
1723 int skip_chunks = index / trace_chunk_size;
1724 int chunk_index = index % trace_chunk_size;
1725 while (chunk != NULL && skip_chunks > 0) {
1726 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1727 skip_chunks--;
1728 }
1729 if (chunk == NULL) {
1730 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1731 }
1732 // Get method id, bci, version and mirror from chunk
1733 typeArrayOop methods = BacktraceBuilder::get_methods(chunk);
1734 typeArrayOop bcis = BacktraceBuilder::get_bcis(chunk);
1735 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1737 assert(methods != NULL && bcis != NULL && mirrors != NULL, "sanity check");
1739 int method = methods->short_at(chunk_index);
1740 int version = version_at(bcis->int_at(chunk_index));
1741 int bci = bci_at(bcis->int_at(chunk_index));
1742 Handle mirror(THREAD, mirrors->obj_at(chunk_index));
1744 // Chunk can be partial full
1745 if (mirror.is_null()) {
1746 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1747 }
1749 oop element = java_lang_StackTraceElement::create(mirror, method, version, bci, CHECK_0);
1750 return element;
1751 }
1753 oop java_lang_StackTraceElement::create(Handle mirror, int method_id, int version, int bci, TRAPS) {
1754 // Allocate java.lang.StackTraceElement instance
1755 Klass* k = SystemDictionary::StackTraceElement_klass();
1756 assert(k != NULL, "must be loaded in 1.4+");
1757 instanceKlassHandle ik (THREAD, k);
1758 if (ik->should_be_initialized()) {
1759 ik->initialize(CHECK_0);
1760 }
1762 Handle element = ik->allocate_instance_handle(CHECK_0);
1763 // Fill in class name
1764 ResourceMark rm(THREAD);
1765 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1766 const char* str = holder->external_name();
1767 oop classname = StringTable::intern((char*) str, CHECK_0);
1768 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1770 // Fill in method name
1771 Method* method = holder->method_with_idnum(method_id);
1772 oop methodname = StringTable::intern(method->name(), CHECK_0);
1773 java_lang_StackTraceElement::set_methodName(element(), methodname);
1775 if (!version_matches(method, version)) {
1776 // The method was redefined, accurate line number information isn't available
1777 java_lang_StackTraceElement::set_fileName(element(), NULL);
1778 java_lang_StackTraceElement::set_lineNumber(element(), -1);
1779 } else {
1780 // Fill in source file name and line number.
1781 Symbol* source = holder->source_file_name();
1782 if (ShowHiddenFrames && source == NULL)
1783 source = vmSymbols::unknown_class_name();
1784 oop filename = StringTable::intern(source, CHECK_0);
1785 java_lang_StackTraceElement::set_fileName(element(), filename);
1787 int line_number = get_line_number(method, bci);
1788 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1789 }
1790 return element();
1791 }
1793 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1794 Handle mirror (THREAD, method->method_holder()->java_mirror());
1795 int method_id = method->method_idnum();
1796 return create(mirror, method_id, method->constants()->version(), bci, THREAD);
1797 }
1799 void java_lang_reflect_AccessibleObject::compute_offsets() {
1800 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1801 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1802 }
1804 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1805 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1806 return (jboolean) reflect->bool_field(override_offset);
1807 }
1809 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1810 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1811 reflect->bool_field_put(override_offset, (int) value);
1812 }
1814 void java_lang_reflect_Method::compute_offsets() {
1815 Klass* k = SystemDictionary::reflect_Method_klass();
1816 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1817 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1818 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1819 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1820 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1821 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1822 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1823 // The generic signature and annotations fields are only present in 1.5
1824 signature_offset = -1;
1825 annotations_offset = -1;
1826 parameter_annotations_offset = -1;
1827 annotation_default_offset = -1;
1828 type_annotations_offset = -1;
1829 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1830 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1831 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1832 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1833 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
1834 }
1836 Handle java_lang_reflect_Method::create(TRAPS) {
1837 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1838 Klass* klass = SystemDictionary::reflect_Method_klass();
1839 // This class is eagerly initialized during VM initialization, since we keep a refence
1840 // to one of the methods
1841 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
1842 return InstanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1843 }
1845 oop java_lang_reflect_Method::clazz(oop reflect) {
1846 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1847 return reflect->obj_field(clazz_offset);
1848 }
1850 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1851 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1852 reflect->obj_field_put(clazz_offset, value);
1853 }
1855 int java_lang_reflect_Method::slot(oop reflect) {
1856 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1857 return reflect->int_field(slot_offset);
1858 }
1860 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1861 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1862 reflect->int_field_put(slot_offset, value);
1863 }
1865 oop java_lang_reflect_Method::name(oop method) {
1866 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1867 return method->obj_field(name_offset);
1868 }
1870 void java_lang_reflect_Method::set_name(oop method, oop value) {
1871 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1872 method->obj_field_put(name_offset, value);
1873 }
1875 oop java_lang_reflect_Method::return_type(oop method) {
1876 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1877 return method->obj_field(returnType_offset);
1878 }
1880 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1881 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1882 method->obj_field_put(returnType_offset, value);
1883 }
1885 oop java_lang_reflect_Method::parameter_types(oop method) {
1886 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1887 return method->obj_field(parameterTypes_offset);
1888 }
1890 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1891 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1892 method->obj_field_put(parameterTypes_offset, value);
1893 }
1895 oop java_lang_reflect_Method::exception_types(oop method) {
1896 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1897 return method->obj_field(exceptionTypes_offset);
1898 }
1900 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1901 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1902 method->obj_field_put(exceptionTypes_offset, value);
1903 }
1905 int java_lang_reflect_Method::modifiers(oop method) {
1906 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1907 return method->int_field(modifiers_offset);
1908 }
1910 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1911 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1912 method->int_field_put(modifiers_offset, value);
1913 }
1915 bool java_lang_reflect_Method::has_signature_field() {
1916 return (signature_offset >= 0);
1917 }
1919 oop java_lang_reflect_Method::signature(oop method) {
1920 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1921 assert(has_signature_field(), "signature field must be present");
1922 return method->obj_field(signature_offset);
1923 }
1925 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1926 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1927 assert(has_signature_field(), "signature field must be present");
1928 method->obj_field_put(signature_offset, value);
1929 }
1931 bool java_lang_reflect_Method::has_annotations_field() {
1932 return (annotations_offset >= 0);
1933 }
1935 oop java_lang_reflect_Method::annotations(oop method) {
1936 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1937 assert(has_annotations_field(), "annotations field must be present");
1938 return method->obj_field(annotations_offset);
1939 }
1941 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1942 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1943 assert(has_annotations_field(), "annotations field must be present");
1944 method->obj_field_put(annotations_offset, value);
1945 }
1947 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1948 return (parameter_annotations_offset >= 0);
1949 }
1951 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1952 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1953 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1954 return method->obj_field(parameter_annotations_offset);
1955 }
1957 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1958 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1959 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1960 method->obj_field_put(parameter_annotations_offset, value);
1961 }
1963 bool java_lang_reflect_Method::has_annotation_default_field() {
1964 return (annotation_default_offset >= 0);
1965 }
1967 oop java_lang_reflect_Method::annotation_default(oop method) {
1968 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1969 assert(has_annotation_default_field(), "annotation default field must be present");
1970 return method->obj_field(annotation_default_offset);
1971 }
1973 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1974 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1975 assert(has_annotation_default_field(), "annotation default field must be present");
1976 method->obj_field_put(annotation_default_offset, value);
1977 }
1979 bool java_lang_reflect_Method::has_type_annotations_field() {
1980 return (type_annotations_offset >= 0);
1981 }
1983 oop java_lang_reflect_Method::type_annotations(oop method) {
1984 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1985 assert(has_type_annotations_field(), "type_annotations field must be present");
1986 return method->obj_field(type_annotations_offset);
1987 }
1989 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
1990 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1991 assert(has_type_annotations_field(), "type_annotations field must be present");
1992 method->obj_field_put(type_annotations_offset, value);
1993 }
1995 void java_lang_reflect_Constructor::compute_offsets() {
1996 Klass* k = SystemDictionary::reflect_Constructor_klass();
1997 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1998 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1999 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2000 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2001 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2002 // The generic signature and annotations fields are only present in 1.5
2003 signature_offset = -1;
2004 annotations_offset = -1;
2005 parameter_annotations_offset = -1;
2006 type_annotations_offset = -1;
2007 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2008 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2009 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2010 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2011 }
2013 Handle java_lang_reflect_Constructor::create(TRAPS) {
2014 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2015 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2016 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2017 instanceKlassHandle klass (THREAD, k);
2018 // Ensure it is initialized
2019 klass->initialize(CHECK_NH);
2020 return klass->allocate_instance_handle(CHECK_NH);
2021 }
2023 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2024 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2025 return reflect->obj_field(clazz_offset);
2026 }
2028 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2029 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2030 reflect->obj_field_put(clazz_offset, value);
2031 }
2033 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2034 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2035 return constructor->obj_field(parameterTypes_offset);
2036 }
2038 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2039 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2040 constructor->obj_field_put(parameterTypes_offset, value);
2041 }
2043 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2044 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2045 return constructor->obj_field(exceptionTypes_offset);
2046 }
2048 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2049 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2050 constructor->obj_field_put(exceptionTypes_offset, value);
2051 }
2053 int java_lang_reflect_Constructor::slot(oop reflect) {
2054 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2055 return reflect->int_field(slot_offset);
2056 }
2058 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2059 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2060 reflect->int_field_put(slot_offset, value);
2061 }
2063 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2064 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2065 return constructor->int_field(modifiers_offset);
2066 }
2068 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2069 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2070 constructor->int_field_put(modifiers_offset, value);
2071 }
2073 bool java_lang_reflect_Constructor::has_signature_field() {
2074 return (signature_offset >= 0);
2075 }
2077 oop java_lang_reflect_Constructor::signature(oop constructor) {
2078 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2079 assert(has_signature_field(), "signature field must be present");
2080 return constructor->obj_field(signature_offset);
2081 }
2083 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2084 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2085 assert(has_signature_field(), "signature field must be present");
2086 constructor->obj_field_put(signature_offset, value);
2087 }
2089 bool java_lang_reflect_Constructor::has_annotations_field() {
2090 return (annotations_offset >= 0);
2091 }
2093 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2094 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2095 assert(has_annotations_field(), "annotations field must be present");
2096 return constructor->obj_field(annotations_offset);
2097 }
2099 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2100 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2101 assert(has_annotations_field(), "annotations field must be present");
2102 constructor->obj_field_put(annotations_offset, value);
2103 }
2105 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2106 return (parameter_annotations_offset >= 0);
2107 }
2109 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2110 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2111 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2112 return method->obj_field(parameter_annotations_offset);
2113 }
2115 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2116 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2117 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2118 method->obj_field_put(parameter_annotations_offset, value);
2119 }
2121 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2122 return (type_annotations_offset >= 0);
2123 }
2125 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2126 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2127 assert(has_type_annotations_field(), "type_annotations field must be present");
2128 return constructor->obj_field(type_annotations_offset);
2129 }
2131 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2132 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2133 assert(has_type_annotations_field(), "type_annotations field must be present");
2134 constructor->obj_field_put(type_annotations_offset, value);
2135 }
2137 void java_lang_reflect_Field::compute_offsets() {
2138 Klass* k = SystemDictionary::reflect_Field_klass();
2139 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2140 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2141 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2142 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2143 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2144 // The generic signature and annotations fields are only present in 1.5
2145 signature_offset = -1;
2146 annotations_offset = -1;
2147 type_annotations_offset = -1;
2148 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2149 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2150 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2151 }
2153 Handle java_lang_reflect_Field::create(TRAPS) {
2154 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2155 Symbol* name = vmSymbols::java_lang_reflect_Field();
2156 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2157 instanceKlassHandle klass (THREAD, k);
2158 // Ensure it is initialized
2159 klass->initialize(CHECK_NH);
2160 return klass->allocate_instance_handle(CHECK_NH);
2161 }
2163 oop java_lang_reflect_Field::clazz(oop reflect) {
2164 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2165 return reflect->obj_field(clazz_offset);
2166 }
2168 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2169 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2170 reflect->obj_field_put(clazz_offset, value);
2171 }
2173 oop java_lang_reflect_Field::name(oop field) {
2174 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2175 return field->obj_field(name_offset);
2176 }
2178 void java_lang_reflect_Field::set_name(oop field, oop value) {
2179 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2180 field->obj_field_put(name_offset, value);
2181 }
2183 oop java_lang_reflect_Field::type(oop field) {
2184 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2185 return field->obj_field(type_offset);
2186 }
2188 void java_lang_reflect_Field::set_type(oop field, oop value) {
2189 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2190 field->obj_field_put(type_offset, value);
2191 }
2193 int java_lang_reflect_Field::slot(oop reflect) {
2194 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2195 return reflect->int_field(slot_offset);
2196 }
2198 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2199 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2200 reflect->int_field_put(slot_offset, value);
2201 }
2203 int java_lang_reflect_Field::modifiers(oop field) {
2204 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2205 return field->int_field(modifiers_offset);
2206 }
2208 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2209 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2210 field->int_field_put(modifiers_offset, value);
2211 }
2213 bool java_lang_reflect_Field::has_signature_field() {
2214 return (signature_offset >= 0);
2215 }
2217 oop java_lang_reflect_Field::signature(oop field) {
2218 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2219 assert(has_signature_field(), "signature field must be present");
2220 return field->obj_field(signature_offset);
2221 }
2223 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2224 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2225 assert(has_signature_field(), "signature field must be present");
2226 field->obj_field_put(signature_offset, value);
2227 }
2229 bool java_lang_reflect_Field::has_annotations_field() {
2230 return (annotations_offset >= 0);
2231 }
2233 oop java_lang_reflect_Field::annotations(oop field) {
2234 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2235 assert(has_annotations_field(), "annotations field must be present");
2236 return field->obj_field(annotations_offset);
2237 }
2239 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2240 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2241 assert(has_annotations_field(), "annotations field must be present");
2242 field->obj_field_put(annotations_offset, value);
2243 }
2245 bool java_lang_reflect_Field::has_type_annotations_field() {
2246 return (type_annotations_offset >= 0);
2247 }
2249 oop java_lang_reflect_Field::type_annotations(oop field) {
2250 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2251 assert(has_type_annotations_field(), "type_annotations field must be present");
2252 return field->obj_field(type_annotations_offset);
2253 }
2255 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2256 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2257 assert(has_type_annotations_field(), "type_annotations field must be present");
2258 field->obj_field_put(type_annotations_offset, value);
2259 }
2261 void sun_reflect_ConstantPool::compute_offsets() {
2262 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2263 // This null test can be removed post beta
2264 if (k != NULL) {
2265 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2266 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2267 }
2268 }
2270 void java_lang_reflect_Parameter::compute_offsets() {
2271 Klass* k = SystemDictionary::reflect_Parameter_klass();
2272 if(NULL != k) {
2273 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2274 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2275 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2276 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2277 }
2278 }
2280 Handle java_lang_reflect_Parameter::create(TRAPS) {
2281 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2282 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2283 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2284 instanceKlassHandle klass (THREAD, k);
2285 // Ensure it is initialized
2286 klass->initialize(CHECK_NH);
2287 return klass->allocate_instance_handle(CHECK_NH);
2288 }
2290 oop java_lang_reflect_Parameter::name(oop param) {
2291 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2292 return param->obj_field(name_offset);
2293 }
2295 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2296 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2297 param->obj_field_put(name_offset, value);
2298 }
2300 int java_lang_reflect_Parameter::modifiers(oop param) {
2301 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2302 return param->int_field(modifiers_offset);
2303 }
2305 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2306 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2307 param->int_field_put(modifiers_offset, value);
2308 }
2310 int java_lang_reflect_Parameter::index(oop param) {
2311 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2312 return param->int_field(index_offset);
2313 }
2315 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2316 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2317 param->int_field_put(index_offset, value);
2318 }
2320 oop java_lang_reflect_Parameter::executable(oop param) {
2321 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2322 return param->obj_field(executable_offset);
2323 }
2325 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2326 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2327 param->obj_field_put(executable_offset, value);
2328 }
2331 Handle sun_reflect_ConstantPool::create(TRAPS) {
2332 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2333 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2334 instanceKlassHandle klass (THREAD, k);
2335 // Ensure it is initialized
2336 klass->initialize(CHECK_NH);
2337 return klass->allocate_instance_handle(CHECK_NH);
2338 }
2341 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2342 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2343 oop mirror = value->pool_holder()->java_mirror();
2344 // Save the mirror to get back the constant pool.
2345 reflect->obj_field_put(_oop_offset, mirror);
2346 }
2348 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2349 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2351 oop mirror = reflect->obj_field(_oop_offset);
2352 Klass* k = java_lang_Class::as_Klass(mirror);
2353 assert(k->oop_is_instance(), "Must be");
2355 // Get the constant pool back from the klass. Since class redefinition
2356 // merges the new constant pool into the old, this is essentially the
2357 // same constant pool as the original. If constant pool merging is
2358 // no longer done in the future, this will have to change to save
2359 // the original.
2360 return InstanceKlass::cast(k)->constants();
2361 }
2363 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2364 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2365 // This null test can be removed post beta
2366 if (k != NULL) {
2367 compute_offset(_base_offset, k,
2368 vmSymbols::base_name(), vmSymbols::object_signature());
2369 }
2370 }
2372 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2373 Klass* k = SystemDictionary::box_klass(type);
2374 if (k == NULL) return NULL;
2375 instanceKlassHandle h (THREAD, k);
2376 if (!h->is_initialized()) h->initialize(CHECK_0);
2377 return h->allocate_instance(THREAD);
2378 }
2381 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2382 oop box = initialize_and_allocate(type, CHECK_0);
2383 if (box == NULL) return NULL;
2384 switch (type) {
2385 case T_BOOLEAN:
2386 box->bool_field_put(value_offset, value->z);
2387 break;
2388 case T_CHAR:
2389 box->char_field_put(value_offset, value->c);
2390 break;
2391 case T_FLOAT:
2392 box->float_field_put(value_offset, value->f);
2393 break;
2394 case T_DOUBLE:
2395 box->double_field_put(long_value_offset, value->d);
2396 break;
2397 case T_BYTE:
2398 box->byte_field_put(value_offset, value->b);
2399 break;
2400 case T_SHORT:
2401 box->short_field_put(value_offset, value->s);
2402 break;
2403 case T_INT:
2404 box->int_field_put(value_offset, value->i);
2405 break;
2406 case T_LONG:
2407 box->long_field_put(long_value_offset, value->j);
2408 break;
2409 default:
2410 return NULL;
2411 }
2412 return box;
2413 }
2416 BasicType java_lang_boxing_object::basic_type(oop box) {
2417 if (box == NULL) return T_ILLEGAL;
2418 BasicType type = SystemDictionary::box_klass_type(box->klass());
2419 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2420 return T_ILLEGAL;
2421 return type;
2422 }
2425 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2426 BasicType type = SystemDictionary::box_klass_type(box->klass());
2427 switch (type) {
2428 case T_BOOLEAN:
2429 value->z = box->bool_field(value_offset);
2430 break;
2431 case T_CHAR:
2432 value->c = box->char_field(value_offset);
2433 break;
2434 case T_FLOAT:
2435 value->f = box->float_field(value_offset);
2436 break;
2437 case T_DOUBLE:
2438 value->d = box->double_field(long_value_offset);
2439 break;
2440 case T_BYTE:
2441 value->b = box->byte_field(value_offset);
2442 break;
2443 case T_SHORT:
2444 value->s = box->short_field(value_offset);
2445 break;
2446 case T_INT:
2447 value->i = box->int_field(value_offset);
2448 break;
2449 case T_LONG:
2450 value->j = box->long_field(long_value_offset);
2451 break;
2452 default:
2453 return T_ILLEGAL;
2454 } // end switch
2455 return type;
2456 }
2459 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2460 BasicType type = SystemDictionary::box_klass_type(box->klass());
2461 switch (type) {
2462 case T_BOOLEAN:
2463 box->bool_field_put(value_offset, value->z);
2464 break;
2465 case T_CHAR:
2466 box->char_field_put(value_offset, value->c);
2467 break;
2468 case T_FLOAT:
2469 box->float_field_put(value_offset, value->f);
2470 break;
2471 case T_DOUBLE:
2472 box->double_field_put(long_value_offset, value->d);
2473 break;
2474 case T_BYTE:
2475 box->byte_field_put(value_offset, value->b);
2476 break;
2477 case T_SHORT:
2478 box->short_field_put(value_offset, value->s);
2479 break;
2480 case T_INT:
2481 box->int_field_put(value_offset, value->i);
2482 break;
2483 case T_LONG:
2484 box->long_field_put(long_value_offset, value->j);
2485 break;
2486 default:
2487 return T_ILLEGAL;
2488 } // end switch
2489 return type;
2490 }
2493 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2494 switch (type) {
2495 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2496 case T_CHAR: st->print("%d", value->c); break;
2497 case T_BYTE: st->print("%d", value->b); break;
2498 case T_SHORT: st->print("%d", value->s); break;
2499 case T_INT: st->print("%d", value->i); break;
2500 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2501 case T_FLOAT: st->print("%f", value->f); break;
2502 case T_DOUBLE: st->print("%lf", value->d); break;
2503 default: st->print("type %d?", type); break;
2504 }
2505 }
2508 // Support for java_lang_ref_Reference
2509 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
2510 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2511 address addr = ik->static_field_addr(static_lock_offset);
2512 return (HeapWord*) addr;
2513 }
2515 oop java_lang_ref_Reference::pending_list_lock() {
2516 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2517 address addr = ik->static_field_addr(static_lock_offset);
2518 if (UseCompressedOops) {
2519 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2520 } else {
2521 return oopDesc::load_decode_heap_oop((oop*)addr);
2522 }
2523 }
2525 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2526 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2527 address addr = ik->static_field_addr(static_pending_offset);
2528 // XXX This might not be HeapWord aligned, almost rather be char *.
2529 return (HeapWord*)addr;
2530 }
2532 oop java_lang_ref_Reference::pending_list() {
2533 char *addr = (char *)pending_list_addr();
2534 if (UseCompressedOops) {
2535 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2536 } else {
2537 return oopDesc::load_decode_heap_oop((oop*)addr);
2538 }
2539 }
2542 // Support for java_lang_ref_SoftReference
2544 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2545 return ref->long_field(timestamp_offset);
2546 }
2548 jlong java_lang_ref_SoftReference::clock() {
2549 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2550 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2551 return *offset;
2552 }
2554 void java_lang_ref_SoftReference::set_clock(jlong value) {
2555 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2556 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2557 *offset = value;
2558 }
2561 // Support for java_lang_invoke_MethodHandle
2563 int java_lang_invoke_MethodHandle::_type_offset;
2564 int java_lang_invoke_MethodHandle::_form_offset;
2566 int java_lang_invoke_MemberName::_clazz_offset;
2567 int java_lang_invoke_MemberName::_name_offset;
2568 int java_lang_invoke_MemberName::_type_offset;
2569 int java_lang_invoke_MemberName::_flags_offset;
2570 int java_lang_invoke_MemberName::_vmtarget_offset;
2571 int java_lang_invoke_MemberName::_vmloader_offset;
2572 int java_lang_invoke_MemberName::_vmindex_offset;
2574 int java_lang_invoke_LambdaForm::_vmentry_offset;
2576 void java_lang_invoke_MethodHandle::compute_offsets() {
2577 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
2578 if (klass_oop != NULL && EnableInvokeDynamic) {
2579 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2580 compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2581 if (_form_offset == 0) {
2582 EnableInvokeDynamic = false;
2583 }
2584 }
2585 }
2587 void java_lang_invoke_MemberName::compute_offsets() {
2588 Klass* klass_oop = SystemDictionary::MemberName_klass();
2589 if (klass_oop != NULL && EnableInvokeDynamic) {
2590 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2591 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2592 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2593 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2594 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2595 }
2596 }
2598 void java_lang_invoke_LambdaForm::compute_offsets() {
2599 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
2600 if (klass_oop != NULL && EnableInvokeDynamic) {
2601 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2602 }
2603 }
2605 oop java_lang_invoke_MethodHandle::type(oop mh) {
2606 return mh->obj_field(_type_offset);
2607 }
2609 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2610 mh->obj_field_put(_type_offset, mtype);
2611 }
2613 oop java_lang_invoke_MethodHandle::form(oop mh) {
2614 assert(_form_offset != 0, "");
2615 return mh->obj_field(_form_offset);
2616 }
2618 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2619 assert(_form_offset != 0, "");
2620 mh->obj_field_put(_form_offset, lform);
2621 }
2623 /// MemberName accessors
2625 oop java_lang_invoke_MemberName::clazz(oop mname) {
2626 assert(is_instance(mname), "wrong type");
2627 return mname->obj_field(_clazz_offset);
2628 }
2630 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2631 assert(is_instance(mname), "wrong type");
2632 mname->obj_field_put(_clazz_offset, clazz);
2633 }
2635 oop java_lang_invoke_MemberName::name(oop mname) {
2636 assert(is_instance(mname), "wrong type");
2637 return mname->obj_field(_name_offset);
2638 }
2640 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2641 assert(is_instance(mname), "wrong type");
2642 mname->obj_field_put(_name_offset, name);
2643 }
2645 oop java_lang_invoke_MemberName::type(oop mname) {
2646 assert(is_instance(mname), "wrong type");
2647 return mname->obj_field(_type_offset);
2648 }
2650 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2651 assert(is_instance(mname), "wrong type");
2652 mname->obj_field_put(_type_offset, type);
2653 }
2655 int java_lang_invoke_MemberName::flags(oop mname) {
2656 assert(is_instance(mname), "wrong type");
2657 return mname->int_field(_flags_offset);
2658 }
2660 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2661 assert(is_instance(mname), "wrong type");
2662 mname->int_field_put(_flags_offset, flags);
2663 }
2665 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
2666 assert(is_instance(mname), "wrong type");
2667 return (Metadata*)mname->address_field(_vmtarget_offset);
2668 }
2670 #if INCLUDE_JVMTI
2671 // Can be executed on VM thread only
2672 void java_lang_invoke_MemberName::adjust_vmtarget(oop mname, Metadata* ref) {
2673 assert((is_instance(mname) && (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0), "wrong type");
2674 assert(Thread::current()->is_VM_thread(), "not VM thread");
2675 mname->address_field_put(_vmtarget_offset, (address)ref);
2676 }
2677 #endif // INCLUDE_JVMTI
2679 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
2680 assert(is_instance(mname), "wrong type");
2681 // check the type of the vmtarget
2682 oop dependency = NULL;
2683 if (ref != NULL) {
2684 switch (flags(mname) & (MN_IS_METHOD |
2685 MN_IS_CONSTRUCTOR |
2686 MN_IS_FIELD)) {
2687 case MN_IS_METHOD:
2688 case MN_IS_CONSTRUCTOR:
2689 assert(ref->is_method(), "should be a method");
2690 dependency = ((Method*)ref)->method_holder()->java_mirror();
2691 break;
2692 case MN_IS_FIELD:
2693 assert(ref->is_klass(), "should be a class");
2694 dependency = ((Klass*)ref)->java_mirror();
2695 break;
2696 default:
2697 ShouldNotReachHere();
2698 }
2699 }
2700 mname->address_field_put(_vmtarget_offset, (address)ref);
2701 // Add a reference to the loader (actually mirror because anonymous classes will not have
2702 // distinct loaders) to ensure the metadata is kept alive
2703 // This mirror may be different than the one in clazz field.
2704 mname->obj_field_put(_vmloader_offset, dependency);
2705 }
2707 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2708 assert(is_instance(mname), "wrong type");
2709 return (intptr_t) mname->address_field(_vmindex_offset);
2710 }
2712 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2713 assert(is_instance(mname), "wrong type");
2714 mname->address_field_put(_vmindex_offset, (address) index);
2715 }
2717 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2718 assert(is_instance(lform), "wrong type");
2719 return lform->obj_field(_vmentry_offset);
2720 }
2723 // Support for java_lang_invoke_MethodType
2725 int java_lang_invoke_MethodType::_rtype_offset;
2726 int java_lang_invoke_MethodType::_ptypes_offset;
2728 void java_lang_invoke_MethodType::compute_offsets() {
2729 Klass* k = SystemDictionary::MethodType_klass();
2730 if (k != NULL) {
2731 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2732 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2733 }
2734 }
2736 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2737 st->print("(");
2738 objArrayOop pts = ptypes(mt);
2739 for (int i = 0, limit = pts->length(); i < limit; i++) {
2740 java_lang_Class::print_signature(pts->obj_at(i), st);
2741 }
2742 st->print(")");
2743 java_lang_Class::print_signature(rtype(mt), st);
2744 }
2746 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2747 ResourceMark rm;
2748 stringStream buffer(128);
2749 print_signature(mt, &buffer);
2750 const char* sigstr = buffer.base();
2751 int siglen = (int) buffer.size();
2752 Symbol *name;
2753 if (!intern_if_not_found) {
2754 name = SymbolTable::probe(sigstr, siglen);
2755 } else {
2756 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2757 }
2758 return name;
2759 }
2761 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2762 if (mt1 == mt2)
2763 return true;
2764 if (rtype(mt1) != rtype(mt2))
2765 return false;
2766 if (ptype_count(mt1) != ptype_count(mt2))
2767 return false;
2768 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2769 if (ptype(mt1, i) != ptype(mt2, i))
2770 return false;
2771 }
2772 return true;
2773 }
2775 oop java_lang_invoke_MethodType::rtype(oop mt) {
2776 assert(is_instance(mt), "must be a MethodType");
2777 return mt->obj_field(_rtype_offset);
2778 }
2780 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2781 assert(is_instance(mt), "must be a MethodType");
2782 return (objArrayOop) mt->obj_field(_ptypes_offset);
2783 }
2785 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2786 return ptypes(mt)->obj_at(idx);
2787 }
2789 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2790 return ptypes(mt)->length();
2791 }
2793 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2794 objArrayOop pts = ptypes(mt);
2795 int count = pts->length();
2796 int slots = 0;
2797 for (int i = 0; i < count; i++) {
2798 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2799 slots += type2size[bt];
2800 }
2801 return slots;
2802 }
2804 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2805 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2806 return type2size[bt];
2807 }
2810 // Support for java_lang_invoke_CallSite
2812 int java_lang_invoke_CallSite::_target_offset;
2814 void java_lang_invoke_CallSite::compute_offsets() {
2815 if (!EnableInvokeDynamic) return;
2816 Klass* k = SystemDictionary::CallSite_klass();
2817 if (k != NULL) {
2818 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2819 }
2820 }
2823 // Support for java_security_AccessControlContext
2825 int java_security_AccessControlContext::_context_offset = 0;
2826 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2827 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2829 void java_security_AccessControlContext::compute_offsets() {
2830 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2831 fieldDescriptor fd;
2832 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2834 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2835 fatal("Invalid layout of java.security.AccessControlContext");
2836 }
2837 _context_offset = fd.offset();
2839 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2840 fatal("Invalid layout of java.security.AccessControlContext");
2841 }
2842 _privilegedContext_offset = fd.offset();
2844 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2845 fatal("Invalid layout of java.security.AccessControlContext");
2846 }
2847 _isPrivileged_offset = fd.offset();
2848 }
2851 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2852 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2853 // Ensure klass is initialized
2854 InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2855 // Allocate result
2856 oop result = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2857 // Fill in values
2858 result->obj_field_put(_context_offset, context());
2859 result->obj_field_put(_privilegedContext_offset, privileged_context());
2860 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2861 return result;
2862 }
2865 // Support for java_lang_ClassLoader
2867 bool java_lang_ClassLoader::offsets_computed = false;
2868 int java_lang_ClassLoader::_loader_data_offset = -1;
2869 int java_lang_ClassLoader::parallelCapable_offset = -1;
2871 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
2872 assert(loader != NULL && loader->is_oop(), "loader must be oop");
2873 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
2874 }
2876 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
2877 return *java_lang_ClassLoader::loader_data_addr(loader);
2878 }
2880 void java_lang_ClassLoader::compute_offsets() {
2881 assert(!offsets_computed, "offsets should be initialized only once");
2882 offsets_computed = true;
2884 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2885 Klass* k1 = SystemDictionary::ClassLoader_klass();
2886 compute_optional_offset(parallelCapable_offset,
2887 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2889 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2890 }
2892 oop java_lang_ClassLoader::parent(oop loader) {
2893 assert(is_instance(loader), "loader must be oop");
2894 return loader->obj_field(parent_offset);
2895 }
2897 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
2898 assert(is_instance(loader), "loader must be oop");
2899 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
2900 oop acl = loader;
2901 debug_only(jint loop_count = 0);
2902 // This loop taken verbatim from ClassLoader.java:
2903 do {
2904 acl = parent(acl);
2905 if (cl == acl) {
2906 return true;
2907 }
2908 assert(++loop_count > 0, "loop_count overflow");
2909 } while (acl != NULL);
2910 return false;
2911 }
2914 // For class loader classes, parallelCapable defined
2915 // based on non-null field
2916 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2917 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2918 if (!JDK_Version::is_gte_jdk17x_version()
2919 || parallelCapable_offset == -1) {
2920 // Default for backward compatibility is false
2921 return false;
2922 }
2923 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2924 }
2926 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2927 // Fix for 4474172; see evaluation for more details
2928 loader = non_reflection_class_loader(loader);
2930 oop cl = SystemDictionary::java_system_loader();
2931 while(cl != NULL) {
2932 if (cl == loader) return true;
2933 cl = parent(cl);
2934 }
2935 return false;
2936 }
2938 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2939 if (loader != NULL) {
2940 // See whether this is one of the class loaders associated with
2941 // the generated bytecodes for reflection, and if so, "magically"
2942 // delegate to its parent to prevent class loading from occurring
2943 // in places where applications using reflection didn't expect it.
2944 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2945 // This might be null in non-1.4 JDKs
2946 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2947 return parent(loader);
2948 }
2949 }
2950 return loader;
2951 }
2954 // Support for java_lang_System
2955 int java_lang_System::in_offset_in_bytes() {
2956 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2957 }
2960 int java_lang_System::out_offset_in_bytes() {
2961 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2962 }
2965 int java_lang_System::err_offset_in_bytes() {
2966 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2967 }
2971 int java_lang_Class::_klass_offset;
2972 int java_lang_Class::_array_klass_offset;
2973 int java_lang_Class::_oop_size_offset;
2974 int java_lang_Class::_static_oop_field_count_offset;
2975 int java_lang_Class::_protection_domain_offset;
2976 int java_lang_Class::_init_lock_offset;
2977 int java_lang_Class::_signers_offset;
2978 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
2979 int java_lang_Throwable::backtrace_offset;
2980 int java_lang_Throwable::detailMessage_offset;
2981 int java_lang_Throwable::cause_offset;
2982 int java_lang_Throwable::stackTrace_offset;
2983 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2984 int java_lang_reflect_AccessibleObject::override_offset;
2985 int java_lang_reflect_Method::clazz_offset;
2986 int java_lang_reflect_Method::name_offset;
2987 int java_lang_reflect_Method::returnType_offset;
2988 int java_lang_reflect_Method::parameterTypes_offset;
2989 int java_lang_reflect_Method::exceptionTypes_offset;
2990 int java_lang_reflect_Method::slot_offset;
2991 int java_lang_reflect_Method::modifiers_offset;
2992 int java_lang_reflect_Method::signature_offset;
2993 int java_lang_reflect_Method::annotations_offset;
2994 int java_lang_reflect_Method::parameter_annotations_offset;
2995 int java_lang_reflect_Method::annotation_default_offset;
2996 int java_lang_reflect_Method::type_annotations_offset;
2997 int java_lang_reflect_Constructor::clazz_offset;
2998 int java_lang_reflect_Constructor::parameterTypes_offset;
2999 int java_lang_reflect_Constructor::exceptionTypes_offset;
3000 int java_lang_reflect_Constructor::slot_offset;
3001 int java_lang_reflect_Constructor::modifiers_offset;
3002 int java_lang_reflect_Constructor::signature_offset;
3003 int java_lang_reflect_Constructor::annotations_offset;
3004 int java_lang_reflect_Constructor::parameter_annotations_offset;
3005 int java_lang_reflect_Constructor::type_annotations_offset;
3006 int java_lang_reflect_Field::clazz_offset;
3007 int java_lang_reflect_Field::name_offset;
3008 int java_lang_reflect_Field::type_offset;
3009 int java_lang_reflect_Field::slot_offset;
3010 int java_lang_reflect_Field::modifiers_offset;
3011 int java_lang_reflect_Field::signature_offset;
3012 int java_lang_reflect_Field::annotations_offset;
3013 int java_lang_reflect_Field::type_annotations_offset;
3014 int java_lang_reflect_Parameter::name_offset;
3015 int java_lang_reflect_Parameter::modifiers_offset;
3016 int java_lang_reflect_Parameter::index_offset;
3017 int java_lang_reflect_Parameter::executable_offset;
3018 int java_lang_boxing_object::value_offset;
3019 int java_lang_boxing_object::long_value_offset;
3020 int java_lang_ref_Reference::referent_offset;
3021 int java_lang_ref_Reference::queue_offset;
3022 int java_lang_ref_Reference::next_offset;
3023 int java_lang_ref_Reference::discovered_offset;
3024 int java_lang_ref_Reference::static_lock_offset;
3025 int java_lang_ref_Reference::static_pending_offset;
3026 int java_lang_ref_Reference::number_of_fake_oop_fields;
3027 int java_lang_ref_SoftReference::timestamp_offset;
3028 int java_lang_ref_SoftReference::static_clock_offset;
3029 int java_lang_ClassLoader::parent_offset;
3030 int java_lang_System::static_in_offset;
3031 int java_lang_System::static_out_offset;
3032 int java_lang_System::static_err_offset;
3033 int java_lang_StackTraceElement::declaringClass_offset;
3034 int java_lang_StackTraceElement::methodName_offset;
3035 int java_lang_StackTraceElement::fileName_offset;
3036 int java_lang_StackTraceElement::lineNumber_offset;
3037 int java_lang_AssertionStatusDirectives::classes_offset;
3038 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3039 int java_lang_AssertionStatusDirectives::packages_offset;
3040 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3041 int java_lang_AssertionStatusDirectives::deflt_offset;
3042 int java_nio_Buffer::_limit_offset;
3043 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3044 int sun_reflect_ConstantPool::_oop_offset;
3045 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3048 // Support for java_lang_StackTraceElement
3050 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3051 element->obj_field_put(fileName_offset, value);
3052 }
3054 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3055 element->obj_field_put(declaringClass_offset, value);
3056 }
3058 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3059 element->obj_field_put(methodName_offset, value);
3060 }
3062 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3063 element->int_field_put(lineNumber_offset, value);
3064 }
3067 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3069 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3070 o->obj_field_put(classes_offset, val);
3071 }
3073 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3074 o->obj_field_put(classEnabled_offset, val);
3075 }
3077 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3078 o->obj_field_put(packages_offset, val);
3079 }
3081 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3082 o->obj_field_put(packageEnabled_offset, val);
3083 }
3085 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3086 o->bool_field_put(deflt_offset, val);
3087 }
3090 // Support for intrinsification of java.nio.Buffer.checkIndex
3091 int java_nio_Buffer::limit_offset() {
3092 return _limit_offset;
3093 }
3096 void java_nio_Buffer::compute_offsets() {
3097 Klass* k = SystemDictionary::nio_Buffer_klass();
3098 assert(k != NULL, "must be loaded in 1.4+");
3099 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3100 }
3102 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3103 if (_owner_offset != 0) return;
3105 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
3106 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3107 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3108 compute_offset(_owner_offset, k,
3109 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3110 }
3112 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3113 assert(_owner_offset != 0, "Must be initialized");
3114 return obj->obj_field(_owner_offset);
3115 }
3117 // Compute hard-coded offsets
3118 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3119 // are not available to determine the offset_of_static_fields.
3120 void JavaClasses::compute_hard_coded_offsets() {
3121 const int x = heapOopSize;
3122 const int header = instanceOopDesc::base_offset_in_bytes();
3124 // Throwable Class
3125 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3126 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3127 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3128 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3129 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3131 // java_lang_boxing_object
3132 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3133 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3135 // java_lang_ref_Reference:
3136 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3137 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3138 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3139 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3140 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3141 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3142 // Artificial fields for java_lang_ref_Reference
3143 // The first field is for the discovered field added in 1.4
3144 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3146 // java_lang_ref_SoftReference Class
3147 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3148 // Don't multiply static fields because they are always in wordSize units
3149 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3151 // java_lang_ClassLoader
3152 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3154 // java_lang_System
3155 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3156 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3157 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3159 // java_lang_StackTraceElement
3160 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3161 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3162 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3163 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3164 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3165 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3166 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3167 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3168 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3170 }
3173 // Compute non-hard-coded field offsets of all the classes in this file
3174 void JavaClasses::compute_offsets() {
3175 // java_lang_Class::compute_offsets was called earlier in bootstrap
3176 java_lang_ClassLoader::compute_offsets();
3177 java_lang_Thread::compute_offsets();
3178 java_lang_ThreadGroup::compute_offsets();
3179 if (EnableInvokeDynamic) {
3180 java_lang_invoke_MethodHandle::compute_offsets();
3181 java_lang_invoke_MemberName::compute_offsets();
3182 java_lang_invoke_LambdaForm::compute_offsets();
3183 java_lang_invoke_MethodType::compute_offsets();
3184 java_lang_invoke_CallSite::compute_offsets();
3185 }
3186 java_security_AccessControlContext::compute_offsets();
3187 // Initialize reflection classes. The layouts of these classes
3188 // changed with the new reflection implementation in JDK 1.4, and
3189 // since the Universe doesn't know what JDK version it is until this
3190 // point we defer computation of these offsets until now.
3191 java_lang_reflect_AccessibleObject::compute_offsets();
3192 java_lang_reflect_Method::compute_offsets();
3193 java_lang_reflect_Constructor::compute_offsets();
3194 java_lang_reflect_Field::compute_offsets();
3195 if (JDK_Version::is_gte_jdk14x_version()) {
3196 java_nio_Buffer::compute_offsets();
3197 }
3198 if (JDK_Version::is_gte_jdk15x_version()) {
3199 sun_reflect_ConstantPool::compute_offsets();
3200 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3201 }
3202 if (JDK_Version::is_jdk18x_version())
3203 java_lang_reflect_Parameter::compute_offsets();
3205 // generated interpreter code wants to know about the offsets we just computed:
3206 AbstractAssembler::update_delayed_values();
3207 }
3209 #ifndef PRODUCT
3211 // These functions exist to assert the validity of hard-coded field offsets to guard
3212 // against changes in the class files
3214 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3215 EXCEPTION_MARK;
3216 fieldDescriptor fd;
3217 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3218 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3219 instanceKlassHandle h_klass (THREAD, k);
3220 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3221 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3222 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3223 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3224 return false;
3225 }
3226 if (fd.is_static()) {
3227 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3228 return false;
3229 }
3230 if (fd.offset() == hardcoded_offset ) {
3231 return true;
3232 } else {
3233 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3234 klass_name, field_name, hardcoded_offset, fd.offset());
3235 return false;
3236 }
3237 }
3240 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3241 EXCEPTION_MARK;
3242 fieldDescriptor fd;
3243 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3244 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3245 instanceKlassHandle h_klass (THREAD, k);
3246 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3247 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3248 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3249 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3250 return false;
3251 }
3252 if (!fd.is_static()) {
3253 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3254 return false;
3255 }
3256 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3257 return true;
3258 } else {
3259 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());
3260 return false;
3261 }
3262 }
3265 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3266 EXCEPTION_MARK;
3267 fieldDescriptor fd;
3268 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3269 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3270 instanceKlassHandle h_klass (THREAD, k);
3271 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3272 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3273 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3274 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3275 return false;
3276 }
3277 if (!fd.is_static() || !fd.has_initial_value()) {
3278 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3279 return false;
3280 }
3281 if (!fd.initial_value_tag().is_int()) {
3282 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3283 return false;
3284 }
3285 jint field_value = fd.int_initial_value();
3286 if (field_value == hardcoded_constant) {
3287 return true;
3288 } else {
3289 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);
3290 return false;
3291 }
3292 }
3295 // Check the hard-coded field offsets of all the classes in this file
3297 void JavaClasses::check_offsets() {
3298 bool valid = true;
3299 HandleMark hm;
3301 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3302 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3304 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3305 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3307 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3308 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3310 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3311 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3313 // java.lang.String
3315 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3316 if (java_lang_String::has_offset_field()) {
3317 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3318 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3319 }
3320 if (java_lang_String::has_hash_field()) {
3321 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3322 }
3324 // java.lang.Class
3326 // Fake fields
3327 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3328 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3330 // java.lang.Throwable
3332 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3333 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3334 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3335 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3337 // Boxed primitive objects (java_lang_boxing_object)
3339 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3340 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3341 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3342 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3343 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3344 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3345 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3346 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3348 // java.lang.ClassLoader
3350 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3352 // java.lang.System
3354 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3355 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3356 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3358 // java.lang.StackTraceElement
3360 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3361 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3362 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3363 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3365 // java.lang.ref.Reference
3367 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3368 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3369 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3370 // Fake field
3371 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3372 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3373 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3375 // java.lang.ref.SoftReference
3377 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3378 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3380 // java.lang.AssertionStatusDirectives
3381 //
3382 // The CheckAssertionStatusDirectives boolean can be removed from here and
3383 // globals.hpp after the AssertionStatusDirectives class has been integrated
3384 // into merlin "for some time." Without it, the vm will fail with early
3385 // merlin builds.
3387 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3388 const char* nm = "java/lang/AssertionStatusDirectives";
3389 const char* sig = "[Ljava/lang/String;";
3390 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3391 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3392 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3393 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3394 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3395 }
3397 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3398 }
3400 #endif // PRODUCT
3402 int InjectedField::compute_offset() {
3403 Klass* klass_oop = klass();
3404 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3405 if (!may_be_java && !fs.access_flags().is_internal()) {
3406 // Only look at injected fields
3407 continue;
3408 }
3409 if (fs.name() == name() && fs.signature() == signature()) {
3410 return fs.offset();
3411 }
3412 }
3413 ResourceMark rm;
3414 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)" : "");
3415 #ifndef PRODUCT
3416 klass_oop->print();
3417 tty->print_cr("all fields:");
3418 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3419 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3420 }
3421 #endif //PRODUCT
3422 fatal("Invalid layout of preloaded class");
3423 return -1;
3424 }
3426 void javaClasses_init() {
3427 JavaClasses::compute_offsets();
3428 JavaClasses::check_offsets();
3429 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3430 }