Tue, 27 Nov 2012 17:03:56 -0500
8003848: Make ConstMethod::generic_signature_index optional and move Method::_max_stack to ConstMethod.
Summary: Make ConstMethod::generic_signature_index optional and move Method::_max_stack to ConstMethod.
Reviewed-by: bdelsart, sspitsyn, coleenp
1 /*
2 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
25 #include "precompiled.hpp"
26 #include "classfile/altHashing.hpp"
27 #include "classfile/javaClasses.hpp"
28 #include "classfile/symbolTable.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "code/debugInfo.hpp"
31 #include "code/pcDesc.hpp"
32 #include "compiler/compilerOracle.hpp"
33 #include "interpreter/interpreter.hpp"
34 #include "memory/oopFactory.hpp"
35 #include "memory/resourceArea.hpp"
36 #include "memory/universe.inline.hpp"
37 #include "oops/fieldStreams.hpp"
38 #include "oops/instanceKlass.hpp"
39 #include "oops/instanceMirrorKlass.hpp"
40 #include "oops/klass.hpp"
41 #include "oops/method.hpp"
42 #include "oops/symbol.hpp"
43 #include "oops/typeArrayOop.hpp"
44 #include "runtime/fieldDescriptor.hpp"
45 #include "runtime/handles.inline.hpp"
46 #include "runtime/interfaceSupport.hpp"
47 #include "runtime/java.hpp"
48 #include "runtime/javaCalls.hpp"
49 #include "runtime/safepoint.hpp"
50 #include "runtime/vframe.hpp"
51 #include "utilities/preserveException.hpp"
52 #ifdef TARGET_OS_FAMILY_linux
53 # include "thread_linux.inline.hpp"
54 #endif
55 #ifdef TARGET_OS_FAMILY_solaris
56 # include "thread_solaris.inline.hpp"
57 #endif
58 #ifdef TARGET_OS_FAMILY_windows
59 # include "thread_windows.inline.hpp"
60 #endif
61 #ifdef TARGET_OS_FAMILY_bsd
62 # include "thread_bsd.inline.hpp"
63 #endif
65 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
66 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
68 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
69 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
71 InjectedField JavaClasses::_injected_fields[] = {
72 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
73 };
75 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
76 return _injected_fields[id].compute_offset();
77 }
80 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
81 *field_count = 0;
83 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
84 if (sid == vmSymbols::NO_SID) {
85 // Only well known classes can inject fields
86 return NULL;
87 }
89 int count = 0;
90 int start = -1;
92 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
93 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
94 count++; \
95 if (start == -1) start = klass##_##name##_enum; \
96 }
97 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
98 #undef LOOKUP_INJECTED_FIELD
100 if (start != -1) {
101 *field_count = count;
102 return _injected_fields + start;
103 }
104 return NULL;
105 }
108 static bool find_field(InstanceKlass* ik,
109 Symbol* name_symbol, Symbol* signature_symbol,
110 fieldDescriptor* fd,
111 bool allow_super = false) {
112 if (allow_super)
113 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
114 else
115 return ik->find_local_field(name_symbol, signature_symbol, fd);
116 }
118 // Helpful routine for computing field offsets at run time rather than hardcoding them
119 static void
120 compute_offset(int &dest_offset,
121 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
122 bool allow_super = false) {
123 fieldDescriptor fd;
124 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
125 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
126 ResourceMark rm;
127 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
128 #ifndef PRODUCT
129 klass_oop->print();
130 tty->print_cr("all fields:");
131 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
132 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
133 }
134 #endif //PRODUCT
135 fatal("Invalid layout of preloaded class");
136 }
137 dest_offset = fd.offset();
138 }
140 // Same as above but for "optional" offsets that might not be present in certain JDK versions
141 static void
142 compute_optional_offset(int& dest_offset,
143 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
144 bool allow_super = false) {
145 fieldDescriptor fd;
146 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
147 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
148 dest_offset = fd.offset();
149 }
150 }
153 int java_lang_String::value_offset = 0;
154 int java_lang_String::offset_offset = 0;
155 int java_lang_String::count_offset = 0;
156 int java_lang_String::hash_offset = 0;
158 bool java_lang_String::initialized = false;
160 void java_lang_String::compute_offsets() {
161 assert(!initialized, "offsets should be initialized only once");
163 Klass* k = SystemDictionary::String_klass();
164 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
165 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
166 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
167 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
169 initialized = true;
170 }
172 Handle java_lang_String::basic_create(int length, TRAPS) {
173 assert(initialized, "Must be initialized");
174 // Create the String object first, so there's a chance that the String
175 // and the char array it points to end up in the same cache line.
176 oop obj;
177 obj = InstanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
179 // Create the char array. The String object must be handlized here
180 // because GC can happen as a result of the allocation attempt.
181 Handle h_obj(THREAD, obj);
182 typeArrayOop buffer;
183 buffer = oopFactory::new_charArray(length, CHECK_NH);
185 // Point the String at the char array
186 obj = h_obj();
187 set_value(obj, buffer);
188 // No need to zero the offset, allocation zero'ed the entire String object
189 assert(offset(obj) == 0, "initial String offset should be zero");
190 //set_offset(obj, 0);
191 set_count(obj, length);
193 return h_obj;
194 }
196 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
197 Handle h_obj = basic_create(length, CHECK_NH);
198 typeArrayOop buffer = value(h_obj());
199 for (int index = 0; index < length; index++) {
200 buffer->char_at_put(index, unicode[index]);
201 }
202 return h_obj;
203 }
205 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
206 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
207 return h_obj();
208 }
210 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
211 if (utf8_str == NULL) {
212 return Handle();
213 }
214 int length = UTF8::unicode_length(utf8_str);
215 Handle h_obj = basic_create(length, CHECK_NH);
216 if (length > 0) {
217 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
218 }
219 return h_obj;
220 }
222 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
223 Handle h_obj = create_from_str(utf8_str, CHECK_0);
224 return h_obj();
225 }
227 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
228 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
229 Handle h_obj = basic_create(length, CHECK_NH);
230 if (length > 0) {
231 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
232 }
233 return h_obj;
234 }
236 // Converts a C string to a Java String based on current encoding
237 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
238 assert(str != NULL, "bad arguments");
240 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
241 static to_java_string_fn_t _to_java_string_fn = NULL;
243 if (_to_java_string_fn == NULL) {
244 void *lib_handle = os::native_java_library();
245 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
246 if (_to_java_string_fn == NULL) {
247 fatal("NewStringPlatform missing");
248 }
249 }
251 jstring js = NULL;
252 { JavaThread* thread = (JavaThread*)THREAD;
253 assert(thread->is_Java_thread(), "must be java thread");
254 HandleMark hm(thread);
255 ThreadToNativeFromVM ttn(thread);
256 js = (_to_java_string_fn)(thread->jni_environment(), str);
257 }
258 return Handle(THREAD, JNIHandles::resolve(js));
259 }
261 // Converts a Java String to a native C string that can be used for
262 // native OS calls.
263 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
265 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
266 static to_platform_string_fn_t _to_platform_string_fn = NULL;
268 if (_to_platform_string_fn == NULL) {
269 void *lib_handle = os::native_java_library();
270 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
271 if (_to_platform_string_fn == NULL) {
272 fatal("GetStringPlatformChars missing");
273 }
274 }
276 char *native_platform_string;
277 { JavaThread* thread = (JavaThread*)THREAD;
278 assert(thread->is_Java_thread(), "must be java thread");
279 JNIEnv *env = thread->jni_environment();
280 jstring js = (jstring) JNIHandles::make_local(env, java_string());
281 bool is_copy;
282 HandleMark hm(thread);
283 ThreadToNativeFromVM ttn(thread);
284 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
285 assert(is_copy == JNI_TRUE, "is_copy value changed");
286 JNIHandles::destroy_local(js);
287 }
288 return native_platform_string;
289 }
291 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
292 oop obj = java_string();
293 // Typical usage is to convert all '/' to '.' in string.
294 typeArrayOop value = java_lang_String::value(obj);
295 int offset = java_lang_String::offset(obj);
296 int length = java_lang_String::length(obj);
298 // First check if any from_char exist
299 int index; // Declared outside, used later
300 for (index = 0; index < length; index++) {
301 if (value->char_at(index + offset) == from_char) {
302 break;
303 }
304 }
305 if (index == length) {
306 // No from_char, so do not copy.
307 return java_string;
308 }
310 // Create new UNICODE buffer. Must handlize value because GC
311 // may happen during String and char array creation.
312 typeArrayHandle h_value(THREAD, value);
313 Handle string = basic_create(length, CHECK_NH);
315 typeArrayOop from_buffer = h_value();
316 typeArrayOop to_buffer = java_lang_String::value(string());
318 // Copy contents
319 for (index = 0; index < length; index++) {
320 jchar c = from_buffer->char_at(index + offset);
321 if (c == from_char) {
322 c = to_char;
323 }
324 to_buffer->char_at_put(index, c);
325 }
326 return string;
327 }
329 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) {
330 typeArrayOop value = java_lang_String::value(java_string);
331 int offset = java_lang_String::offset(java_string);
332 length = java_lang_String::length(java_string);
334 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
335 for (int index = 0; index < length; index++) {
336 result[index] = value->char_at(index + offset);
337 }
338 return result;
339 }
341 unsigned int java_lang_String::to_hash(oop java_string) {
342 int length = java_lang_String::length(java_string);
343 // Zero length string will hash to zero with String.toHash() function.
344 if (length == 0) return 0;
346 typeArrayOop value = java_lang_String::value(java_string);
347 int offset = java_lang_String::offset(java_string);
348 return java_lang_String::to_hash(value->char_at_addr(offset), length);
349 }
351 char* java_lang_String::as_quoted_ascii(oop java_string) {
352 typeArrayOop value = java_lang_String::value(java_string);
353 int offset = java_lang_String::offset(java_string);
354 int length = java_lang_String::length(java_string);
356 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
357 if (base == NULL) return NULL;
359 int result_length = UNICODE::quoted_ascii_length(base, length) + 1;
360 char* result = NEW_RESOURCE_ARRAY(char, result_length);
361 UNICODE::as_quoted_ascii(base, length, result, result_length);
362 assert(result_length >= length + 1, "must not be shorter");
363 assert(result_length == (int)strlen(result) + 1, "must match");
364 return result;
365 }
367 unsigned int java_lang_String::hash_string(oop java_string) {
368 int length = java_lang_String::length(java_string);
369 // Zero length string doesn't hash necessarily hash to zero.
370 if (length == 0) {
371 return StringTable::hash_string(NULL, 0);
372 }
374 typeArrayOop value = java_lang_String::value(java_string);
375 int offset = java_lang_String::offset(java_string);
376 return StringTable::hash_string(value->char_at_addr(offset), length);
377 }
379 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
380 oop obj = java_string();
381 typeArrayOop value = java_lang_String::value(obj);
382 int offset = java_lang_String::offset(obj);
383 int length = java_lang_String::length(obj);
384 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
385 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
386 return sym;
387 }
389 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
390 typeArrayOop value = java_lang_String::value(java_string);
391 int offset = java_lang_String::offset(java_string);
392 int length = java_lang_String::length(java_string);
393 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
394 return SymbolTable::probe_unicode(base, length);
395 }
398 int java_lang_String::utf8_length(oop java_string) {
399 typeArrayOop value = java_lang_String::value(java_string);
400 int offset = java_lang_String::offset(java_string);
401 int length = java_lang_String::length(java_string);
402 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
403 return UNICODE::utf8_length(position, length);
404 }
406 char* java_lang_String::as_utf8_string(oop java_string) {
407 typeArrayOop value = java_lang_String::value(java_string);
408 int offset = java_lang_String::offset(java_string);
409 int length = java_lang_String::length(java_string);
410 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
411 return UNICODE::as_utf8(position, length);
412 }
414 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
415 typeArrayOop value = java_lang_String::value(java_string);
416 int offset = java_lang_String::offset(java_string);
417 int length = java_lang_String::length(java_string);
418 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
419 return UNICODE::as_utf8(position, length, buf, buflen);
420 }
422 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
423 typeArrayOop value = java_lang_String::value(java_string);
424 int offset = java_lang_String::offset(java_string);
425 int length = java_lang_String::length(java_string);
426 assert(start + len <= length, "just checking");
427 jchar* position = value->char_at_addr(offset + start);
428 return UNICODE::as_utf8(position, len);
429 }
431 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
432 assert(java_string->klass() == SystemDictionary::String_klass(),
433 "must be java_string");
434 typeArrayOop value = java_lang_String::value(java_string);
435 int offset = java_lang_String::offset(java_string);
436 int length = java_lang_String::length(java_string);
437 if (length != len) {
438 return false;
439 }
440 for (int i = 0; i < len; i++) {
441 if (value->char_at(i + offset) != chars[i]) {
442 return false;
443 }
444 }
445 return true;
446 }
448 void java_lang_String::print(Handle java_string, outputStream* st) {
449 oop obj = java_string();
450 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
451 typeArrayOop value = java_lang_String::value(obj);
452 int offset = java_lang_String::offset(obj);
453 int length = java_lang_String::length(obj);
455 int end = MIN2(length, 100);
456 if (value == NULL) {
457 // This can happen if, e.g., printing a String
458 // object before its initializer has been called
459 st->print_cr("NULL");
460 } else {
461 st->print("\"");
462 for (int index = 0; index < length; index++) {
463 st->print("%c", value->char_at(index + offset));
464 }
465 st->print("\"");
466 }
467 }
469 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
470 Handle mirror (THREAD, fd->field_holder()->java_mirror());
471 assert(mirror.not_null() && fd->is_static(), "just checking");
472 if (fd->has_initial_value()) {
473 BasicType t = fd->field_type();
474 switch (t) {
475 case T_BYTE:
476 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
477 break;
478 case T_BOOLEAN:
479 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
480 break;
481 case T_CHAR:
482 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
483 break;
484 case T_SHORT:
485 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
486 break;
487 case T_INT:
488 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
489 break;
490 case T_FLOAT:
491 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
492 break;
493 case T_DOUBLE:
494 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
495 break;
496 case T_LONG:
497 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
498 break;
499 case T_OBJECT:
500 {
501 #ifdef ASSERT
502 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
503 assert(fd->signature() == sym, "just checking");
504 #endif
505 oop string = fd->string_initial_value(CHECK);
506 mirror()->obj_field_put(fd->offset(), string);
507 }
508 break;
509 default:
510 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
511 "Illegal ConstantValue attribute in class file");
512 }
513 }
514 }
517 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
518 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
520 // If the offset was read from the shared archive, it was fixed up already
521 if (!k->is_shared()) {
522 if (k->oop_is_instance()) {
523 // During bootstrap, java.lang.Class wasn't loaded so static field
524 // offsets were computed without the size added it. Go back and
525 // update all the static field offsets to included the size.
526 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
527 if (fs.access_flags().is_static()) {
528 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
529 fs.set_offset(real_offset);
530 }
531 }
532 }
533 }
534 create_mirror(k, CHECK);
535 }
537 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) {
538 assert(k->java_mirror() == NULL, "should only assign mirror once");
539 // Use this moment of initialization to cache modifier_flags also,
540 // to support Class.getModifiers(). Instance classes recalculate
541 // the cached flags after the class file is parsed, but before the
542 // class is put into the system dictionary.
543 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
544 k->set_modifier_flags(computed_modifiers);
545 // Class_klass has to be loaded because it is used to allocate
546 // the mirror.
547 if (SystemDictionary::Class_klass_loaded()) {
548 // Allocate mirror (java.lang.Class instance)
549 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
551 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
552 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
554 // It might also have a component mirror. This mirror must already exist.
555 if (k->oop_is_array()) {
556 Handle comp_mirror;
557 if (k->oop_is_typeArray()) {
558 BasicType type = TypeArrayKlass::cast(k())->element_type();
559 comp_mirror = Universe::java_mirror(type);
560 } else {
561 assert(k->oop_is_objArray(), "Must be");
562 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
563 assert(element_klass != NULL, "Must have an element klass");
564 comp_mirror = element_klass->java_mirror();
565 }
566 assert(comp_mirror.not_null(), "must have a mirror");
568 // Two-way link between the array klass and its component mirror:
569 ArrayKlass::cast(k())->set_component_mirror(comp_mirror());
570 set_array_klass(comp_mirror(), k());
571 } else {
572 assert(k->oop_is_instance(), "Must be");
573 // Initialize static fields
574 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
575 }
576 return mirror();
577 } else {
578 if (fixup_mirror_list() == NULL) {
579 GrowableArray<Klass*>* list =
580 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
581 set_fixup_mirror_list(list);
582 }
583 fixup_mirror_list()->push(k());
584 return NULL;
585 }
586 }
590 int java_lang_Class::oop_size(oop java_class) {
591 assert(_oop_size_offset != 0, "must be set");
592 return java_class->int_field(_oop_size_offset);
593 }
594 void java_lang_Class::set_oop_size(oop java_class, int size) {
595 assert(_oop_size_offset != 0, "must be set");
596 java_class->int_field_put(_oop_size_offset, size);
597 }
598 int java_lang_Class::static_oop_field_count(oop java_class) {
599 assert(_static_oop_field_count_offset != 0, "must be set");
600 return java_class->int_field(_static_oop_field_count_offset);
601 }
602 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
603 assert(_static_oop_field_count_offset != 0, "must be set");
604 java_class->int_field_put(_static_oop_field_count_offset, size);
605 }
607 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
608 // This should be improved by adding a field at the Java level or by
609 // introducing a new VM klass (see comment in ClassFileParser)
610 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
611 if (type != T_VOID) {
612 Klass* aklass = Universe::typeArrayKlassObj(type);
613 assert(aklass != NULL, "correct bootstrap");
614 set_array_klass(java_class, aklass);
615 }
616 #ifdef ASSERT
617 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
618 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
619 #endif
620 return java_class;
621 }
624 Klass* java_lang_Class::as_Klass(oop java_class) {
625 //%note memory_2
626 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
627 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
628 assert(k == NULL || k->is_klass(), "type check");
629 return k;
630 }
633 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
634 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
635 java_class->metadata_field_put(_klass_offset, klass);
636 }
639 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
640 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
641 Symbol* name = NULL;
642 bool is_instance = false;
643 if (is_primitive(java_class)) {
644 name = vmSymbols::type_signature(primitive_type(java_class));
645 } else {
646 Klass* k = as_Klass(java_class);
647 is_instance = k->oop_is_instance();
648 name = k->name();
649 }
650 if (name == NULL) {
651 st->print("<null>");
652 return;
653 }
654 if (is_instance) st->print("L");
655 st->write((char*) name->base(), (int) name->utf8_length());
656 if (is_instance) st->print(";");
657 }
659 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
660 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
661 Symbol* name;
662 if (is_primitive(java_class)) {
663 name = vmSymbols::type_signature(primitive_type(java_class));
664 // Because this can create a new symbol, the caller has to decrement
665 // the refcount, so make adjustment here and below for symbols returned
666 // that are not created or incremented due to a successful lookup.
667 name->increment_refcount();
668 } else {
669 Klass* k = as_Klass(java_class);
670 if (!k->oop_is_instance()) {
671 name = k->name();
672 name->increment_refcount();
673 } else {
674 ResourceMark rm;
675 const char* sigstr = k->signature_name();
676 int siglen = (int) strlen(sigstr);
677 if (!intern_if_not_found) {
678 name = SymbolTable::probe(sigstr, siglen);
679 } else {
680 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
681 }
682 }
683 }
684 return name;
685 }
688 Klass* java_lang_Class::array_klass(oop java_class) {
689 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
690 assert(k == NULL || k->is_klass() && k->oop_is_array(), "should be array klass");
691 return k;
692 }
695 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
696 assert(klass->is_klass() && klass->oop_is_array(), "should be array klass");
697 java_class->metadata_field_put(_array_klass_offset, klass);
698 }
701 Method* java_lang_Class::resolved_constructor(oop java_class) {
702 Metadata* constructor = java_class->metadata_field(_resolved_constructor_offset);
703 assert(constructor == NULL || constructor->is_method(), "should be method");
704 return ((Method*)constructor);
705 }
708 void java_lang_Class::set_resolved_constructor(oop java_class, Method* constructor) {
709 assert(constructor->is_method(), "should be method");
710 java_class->metadata_field_put(_resolved_constructor_offset, constructor);
711 }
714 bool java_lang_Class::is_primitive(oop java_class) {
715 // should assert:
716 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
717 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
719 #ifdef ASSERT
720 if (is_primitive) {
721 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
722 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
723 "Should be either the T_VOID primitive or a java primitive");
724 }
725 #endif
727 return is_primitive;
728 }
731 BasicType java_lang_Class::primitive_type(oop java_class) {
732 assert(java_lang_Class::is_primitive(java_class), "just checking");
733 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
734 BasicType type = T_VOID;
735 if (ak != NULL) {
736 // Note: create_basic_type_mirror above initializes ak to a non-null value.
737 type = ArrayKlass::cast(ak)->element_type();
738 } else {
739 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
740 }
741 assert(Universe::java_mirror(type) == java_class, "must be consistent");
742 return type;
743 }
745 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
746 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
747 if (is_primitive(java_class)) {
748 if (reference_klass != NULL)
749 (*reference_klass) = NULL;
750 return primitive_type(java_class);
751 } else {
752 if (reference_klass != NULL)
753 (*reference_klass) = as_Klass(java_class);
754 return T_OBJECT;
755 }
756 }
759 oop java_lang_Class::primitive_mirror(BasicType t) {
760 oop mirror = Universe::java_mirror(t);
761 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
762 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
763 return mirror;
764 }
766 bool java_lang_Class::offsets_computed = false;
767 int java_lang_Class::classRedefinedCount_offset = -1;
769 void java_lang_Class::compute_offsets() {
770 assert(!offsets_computed, "offsets should be initialized only once");
771 offsets_computed = true;
773 Klass* klass_oop = SystemDictionary::Class_klass();
774 // The classRedefinedCount field is only present starting in 1.5,
775 // so don't go fatal.
776 compute_optional_offset(classRedefinedCount_offset,
777 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
779 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
780 }
782 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
783 if (!JDK_Version::is_gte_jdk15x_version()
784 || classRedefinedCount_offset == -1) {
785 // The classRedefinedCount field is only present starting in 1.5.
786 // If we don't have an offset for it then just return -1 as a marker.
787 return -1;
788 }
790 return the_class_mirror->int_field(classRedefinedCount_offset);
791 }
793 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
794 if (!JDK_Version::is_gte_jdk15x_version()
795 || classRedefinedCount_offset == -1) {
796 // The classRedefinedCount field is only present starting in 1.5.
797 // If we don't have an offset for it then nothing to set.
798 return;
799 }
801 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
802 }
805 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
806 // platform thread structure, and a eetop offset which was used for thread
807 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
808 // merged, so in the HotSpot VM we just use the eetop field for the thread
809 // instead of the privateInfo_offset.
810 //
811 // Note: The stackSize field is only present starting in 1.4.
813 int java_lang_Thread::_name_offset = 0;
814 int java_lang_Thread::_group_offset = 0;
815 int java_lang_Thread::_contextClassLoader_offset = 0;
816 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
817 int java_lang_Thread::_priority_offset = 0;
818 int java_lang_Thread::_eetop_offset = 0;
819 int java_lang_Thread::_daemon_offset = 0;
820 int java_lang_Thread::_stillborn_offset = 0;
821 int java_lang_Thread::_stackSize_offset = 0;
822 int java_lang_Thread::_tid_offset = 0;
823 int java_lang_Thread::_thread_status_offset = 0;
824 int java_lang_Thread::_park_blocker_offset = 0;
825 int java_lang_Thread::_park_event_offset = 0 ;
828 void java_lang_Thread::compute_offsets() {
829 assert(_group_offset == 0, "offsets should be initialized only once");
831 Klass* k = SystemDictionary::Thread_klass();
832 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
833 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
834 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
835 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
836 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
837 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
838 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
839 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
840 // The stackSize field is only present starting in 1.4, so don't go fatal.
841 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
842 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
843 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
844 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
845 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
846 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
847 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
848 vmSymbols::long_signature());
849 }
852 JavaThread* java_lang_Thread::thread(oop java_thread) {
853 return (JavaThread*)java_thread->address_field(_eetop_offset);
854 }
857 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
858 java_thread->address_field_put(_eetop_offset, (address)thread);
859 }
862 typeArrayOop java_lang_Thread::name(oop java_thread) {
863 oop name = java_thread->obj_field(_name_offset);
864 assert(name == NULL || (name->is_typeArray() && TypeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
865 return typeArrayOop(name);
866 }
869 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
870 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
871 java_thread->obj_field_put(_name_offset, name);
872 }
875 ThreadPriority java_lang_Thread::priority(oop java_thread) {
876 return (ThreadPriority)java_thread->int_field(_priority_offset);
877 }
880 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
881 java_thread->int_field_put(_priority_offset, priority);
882 }
885 oop java_lang_Thread::threadGroup(oop java_thread) {
886 return java_thread->obj_field(_group_offset);
887 }
890 bool java_lang_Thread::is_stillborn(oop java_thread) {
891 return java_thread->bool_field(_stillborn_offset) != 0;
892 }
895 // We never have reason to turn the stillborn bit off
896 void java_lang_Thread::set_stillborn(oop java_thread) {
897 java_thread->bool_field_put(_stillborn_offset, true);
898 }
901 bool java_lang_Thread::is_alive(oop java_thread) {
902 JavaThread* thr = java_lang_Thread::thread(java_thread);
903 return (thr != NULL);
904 }
907 bool java_lang_Thread::is_daemon(oop java_thread) {
908 return java_thread->bool_field(_daemon_offset) != 0;
909 }
912 void java_lang_Thread::set_daemon(oop java_thread) {
913 java_thread->bool_field_put(_daemon_offset, true);
914 }
916 oop java_lang_Thread::context_class_loader(oop java_thread) {
917 return java_thread->obj_field(_contextClassLoader_offset);
918 }
920 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
921 return java_thread->obj_field(_inheritedAccessControlContext_offset);
922 }
925 jlong java_lang_Thread::stackSize(oop java_thread) {
926 // The stackSize field is only present starting in 1.4
927 if (_stackSize_offset > 0) {
928 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
929 return java_thread->long_field(_stackSize_offset);
930 } else {
931 return 0;
932 }
933 }
935 // Write the thread status value to threadStatus field in java.lang.Thread java class.
936 void java_lang_Thread::set_thread_status(oop java_thread,
937 java_lang_Thread::ThreadStatus status) {
938 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm");
939 // The threadStatus is only present starting in 1.5
940 if (_thread_status_offset > 0) {
941 java_thread->int_field_put(_thread_status_offset, status);
942 }
943 }
945 // Read thread status value from threadStatus field in java.lang.Thread java class.
946 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
947 assert(Thread::current()->is_VM_thread() ||
948 JavaThread::current()->thread_state() == _thread_in_vm,
949 "Java Thread is not running in vm");
950 // The threadStatus is only present starting in 1.5
951 if (_thread_status_offset > 0) {
952 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
953 } else {
954 // All we can easily figure out is if it is alive, but that is
955 // enough info for a valid unknown status.
956 // These aren't restricted to valid set ThreadStatus values, so
957 // use JVMTI values and cast.
958 JavaThread* thr = java_lang_Thread::thread(java_thread);
959 if (thr == NULL) {
960 // the thread hasn't run yet or is in the process of exiting
961 return NEW;
962 }
963 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
964 }
965 }
968 jlong java_lang_Thread::thread_id(oop java_thread) {
969 // The thread ID field is only present starting in 1.5
970 if (_tid_offset > 0) {
971 return java_thread->long_field(_tid_offset);
972 } else {
973 return 0;
974 }
975 }
977 oop java_lang_Thread::park_blocker(oop java_thread) {
978 assert(JDK_Version::current().supports_thread_park_blocker() &&
979 _park_blocker_offset != 0, "Must support parkBlocker field");
981 if (_park_blocker_offset > 0) {
982 return java_thread->obj_field(_park_blocker_offset);
983 }
985 return NULL;
986 }
988 jlong java_lang_Thread::park_event(oop java_thread) {
989 if (_park_event_offset > 0) {
990 return java_thread->long_field(_park_event_offset);
991 }
992 return 0;
993 }
995 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
996 if (_park_event_offset > 0) {
997 java_thread->long_field_put(_park_event_offset, ptr);
998 return true;
999 }
1000 return false;
1001 }
1004 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1005 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
1006 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1007 switch (status) {
1008 case NEW : return "NEW";
1009 case RUNNABLE : return "RUNNABLE";
1010 case SLEEPING : return "TIMED_WAITING (sleeping)";
1011 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1012 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1013 case PARKED : return "WAITING (parking)";
1014 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1015 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1016 case TERMINATED : return "TERMINATED";
1017 default : return "UNKNOWN";
1018 };
1019 }
1020 int java_lang_ThreadGroup::_parent_offset = 0;
1021 int java_lang_ThreadGroup::_name_offset = 0;
1022 int java_lang_ThreadGroup::_threads_offset = 0;
1023 int java_lang_ThreadGroup::_groups_offset = 0;
1024 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1025 int java_lang_ThreadGroup::_destroyed_offset = 0;
1026 int java_lang_ThreadGroup::_daemon_offset = 0;
1027 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1028 int java_lang_ThreadGroup::_nthreads_offset = 0;
1029 int java_lang_ThreadGroup::_ngroups_offset = 0;
1031 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1032 assert(java_thread_group->is_oop(), "thread group must be oop");
1033 return java_thread_group->obj_field(_parent_offset);
1034 }
1036 // ("name as oop" accessor is not necessary)
1038 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1039 oop name = java_thread_group->obj_field(_name_offset);
1040 // ThreadGroup.name can be null
1041 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1042 }
1044 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1045 assert(java_thread_group->is_oop(), "thread group must be oop");
1046 return java_thread_group->int_field(_nthreads_offset);
1047 }
1049 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1050 oop threads = java_thread_group->obj_field(_threads_offset);
1051 assert(threads != NULL, "threadgroups should have threads");
1052 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1053 return objArrayOop(threads);
1054 }
1056 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1057 assert(java_thread_group->is_oop(), "thread group must be oop");
1058 return java_thread_group->int_field(_ngroups_offset);
1059 }
1061 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1062 oop groups = java_thread_group->obj_field(_groups_offset);
1063 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1064 return objArrayOop(groups);
1065 }
1067 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1068 assert(java_thread_group->is_oop(), "thread group must be oop");
1069 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1070 }
1072 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1073 assert(java_thread_group->is_oop(), "thread group must be oop");
1074 return java_thread_group->bool_field(_destroyed_offset) != 0;
1075 }
1077 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1078 assert(java_thread_group->is_oop(), "thread group must be oop");
1079 return java_thread_group->bool_field(_daemon_offset) != 0;
1080 }
1082 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1083 assert(java_thread_group->is_oop(), "thread group must be oop");
1084 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1085 }
1087 void java_lang_ThreadGroup::compute_offsets() {
1088 assert(_parent_offset == 0, "offsets should be initialized only once");
1090 Klass* k = SystemDictionary::ThreadGroup_klass();
1092 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1093 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1094 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1095 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1096 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1097 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1098 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1099 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1100 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1101 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1102 }
1104 oop java_lang_Throwable::unassigned_stacktrace() {
1105 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Throwable_klass());
1106 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1107 if (UseCompressedOops) {
1108 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1109 } else {
1110 return oopDesc::load_decode_heap_oop((oop*)addr);
1111 }
1112 }
1114 oop java_lang_Throwable::backtrace(oop throwable) {
1115 return throwable->obj_field_acquire(backtrace_offset);
1116 }
1119 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1120 throwable->release_obj_field_put(backtrace_offset, value);
1121 }
1124 oop java_lang_Throwable::message(oop throwable) {
1125 return throwable->obj_field(detailMessage_offset);
1126 }
1129 oop java_lang_Throwable::message(Handle throwable) {
1130 return throwable->obj_field(detailMessage_offset);
1131 }
1134 void java_lang_Throwable::set_message(oop throwable, oop value) {
1135 throwable->obj_field_put(detailMessage_offset, value);
1136 }
1139 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1140 throwable->obj_field_put(stackTrace_offset, st_element_array);
1141 }
1143 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1144 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1145 set_stacktrace(throwable, NULL);
1146 }
1149 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1150 ResourceMark rm;
1151 Klass* k = throwable->klass();
1152 assert(k != NULL, "just checking");
1153 st->print("%s", InstanceKlass::cast(k)->external_name());
1154 oop msg = message(throwable);
1155 if (msg != NULL) {
1156 st->print(": %s", java_lang_String::as_utf8_string(msg));
1157 }
1158 }
1161 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1162 ResourceMark rm;
1163 Klass* k = throwable->klass();
1164 assert(k != NULL, "just checking");
1165 st->print("%s", InstanceKlass::cast(k)->external_name());
1166 oop msg = message(throwable);
1167 if (msg != NULL) {
1168 st->print(": %s", java_lang_String::as_utf8_string(msg));
1169 }
1170 }
1172 // Print stack trace element to resource allocated buffer
1173 char* java_lang_Throwable::print_stack_element_to_buffer(Method* method, int bci) {
1174 // Get strings and string lengths
1175 InstanceKlass* klass = method->method_holder();
1176 const char* klass_name = klass->external_name();
1177 int buf_len = (int)strlen(klass_name);
1178 char* source_file_name;
1179 if (klass->source_file_name() == NULL) {
1180 source_file_name = NULL;
1181 } else {
1182 source_file_name = klass->source_file_name()->as_C_string();
1183 buf_len += (int)strlen(source_file_name);
1184 }
1185 char* method_name = method->name()->as_C_string();
1186 buf_len += (int)strlen(method_name);
1188 // Allocate temporary buffer with extra space for formatting and line number
1189 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1191 // Print stack trace line in buffer
1192 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1193 if (method->is_native()) {
1194 strcat(buf, "(Native Method)");
1195 } else {
1196 int line_number = method->line_number_from_bci(bci);
1197 if (source_file_name != NULL && (line_number != -1)) {
1198 // Sourcename and linenumber
1199 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1200 } else if (source_file_name != NULL) {
1201 // Just sourcename
1202 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1203 } else {
1204 // Neither soucename and linenumber
1205 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1206 }
1207 nmethod* nm = method->code();
1208 if (WizardMode && nm != NULL) {
1209 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1210 }
1211 }
1213 return buf;
1214 }
1217 void java_lang_Throwable::print_stack_element(Handle stream, Method* method, int bci) {
1218 ResourceMark rm;
1219 char* buf = print_stack_element_to_buffer(method, bci);
1220 print_to_stream(stream, buf);
1221 }
1223 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
1224 ResourceMark rm;
1225 char* buf = print_stack_element_to_buffer(method, bci);
1226 st->print_cr("%s", buf);
1227 }
1229 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1230 if (stream.is_null()) {
1231 tty->print_cr("%s", str);
1232 } else {
1233 EXCEPTION_MARK;
1234 JavaValue result(T_VOID);
1235 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1236 if (!HAS_PENDING_EXCEPTION) {
1237 JavaCalls::call_virtual(&result,
1238 stream,
1239 KlassHandle(THREAD, stream->klass()),
1240 vmSymbols::println_name(),
1241 vmSymbols::char_array_void_signature(),
1242 arg,
1243 THREAD);
1244 }
1245 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1246 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1247 }
1249 }
1252 const char* java_lang_Throwable::no_stack_trace_message() {
1253 return "\t<<no stack trace available>>";
1254 }
1257 // Currently used only for exceptions occurring during startup
1258 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1259 Thread *THREAD = Thread::current();
1260 Handle h_throwable(THREAD, throwable);
1261 while (h_throwable.not_null()) {
1262 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1263 if (result.is_null()) {
1264 st->print_cr(no_stack_trace_message());
1265 return;
1266 }
1268 while (result.not_null()) {
1269 typeArrayHandle methods (THREAD,
1270 typeArrayOop(result->obj_at(trace_methods_offset)));
1271 typeArrayHandle bcis (THREAD,
1272 typeArrayOop(result->obj_at(trace_bcis_offset)));
1274 if (methods.is_null() || bcis.is_null()) {
1275 st->print_cr(no_stack_trace_message());
1276 return;
1277 }
1279 int length = methods()->length();
1280 for (int index = 0; index < length; index++) {
1281 Method* method = ((Method*)methods()->metadata_at(index));
1282 if (method == NULL) goto handle_cause;
1283 int bci = bcis->ushort_at(index);
1284 print_stack_element(st, method, bci);
1285 }
1286 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1287 }
1288 handle_cause:
1289 {
1290 EXCEPTION_MARK;
1291 JavaValue result(T_OBJECT);
1292 JavaCalls::call_virtual(&result,
1293 h_throwable,
1294 KlassHandle(THREAD, h_throwable->klass()),
1295 vmSymbols::getCause_name(),
1296 vmSymbols::void_throwable_signature(),
1297 THREAD);
1298 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1299 if (HAS_PENDING_EXCEPTION) {
1300 CLEAR_PENDING_EXCEPTION;
1301 h_throwable = Handle();
1302 } else {
1303 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1304 if (h_throwable.not_null()) {
1305 st->print("Caused by: ");
1306 print(h_throwable, st);
1307 st->cr();
1308 }
1309 }
1310 }
1311 }
1312 }
1315 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1316 // Note: this is no longer used in Merlin, but we support it for compatibility.
1317 Thread *thread = Thread::current();
1318 Handle stream(thread, print_stream);
1319 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1320 if (result.is_null()) {
1321 print_to_stream(stream, no_stack_trace_message());
1322 return;
1323 }
1325 while (result.not_null()) {
1326 typeArrayHandle methods(thread,
1327 typeArrayOop(result->obj_at(trace_methods_offset)));
1328 typeArrayHandle bcis (thread,
1329 typeArrayOop(result->obj_at(trace_bcis_offset)));
1331 if (methods.is_null() || bcis.is_null()) {
1332 print_to_stream(stream, no_stack_trace_message());
1333 return;
1334 }
1336 int length = methods()->length();
1337 for (int index = 0; index < length; index++) {
1338 Method* method = ((Method*)methods()->metadata_at(index));
1339 if (method == NULL) return;
1340 int bci = bcis->ushort_at(index);
1341 print_stack_element(stream, method, bci);
1342 }
1343 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1344 }
1345 }
1347 // This class provides a simple wrapper over the internal structure of
1348 // exception backtrace to insulate users of the backtrace from needing
1349 // to know what it looks like.
1350 class BacktraceBuilder: public StackObj {
1351 private:
1352 Handle _backtrace;
1353 objArrayOop _head;
1354 typeArrayOop _methods;
1355 typeArrayOop _bcis;
1356 objArrayOop _mirrors;
1357 int _index;
1358 No_Safepoint_Verifier _nsv;
1360 public:
1362 enum {
1363 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1364 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1365 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1366 trace_next_offset = java_lang_Throwable::trace_next_offset,
1367 trace_size = java_lang_Throwable::trace_size,
1368 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1369 };
1371 // constructor for new backtrace
1372 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL) {
1373 expand(CHECK);
1374 _backtrace = _head;
1375 _index = 0;
1376 }
1378 void expand(TRAPS) {
1379 objArrayHandle old_head(THREAD, _head);
1380 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1382 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1383 objArrayHandle new_head(THREAD, head);
1385 typeArrayOop methods = oopFactory::new_metaDataArray(trace_chunk_size, CHECK);
1386 typeArrayHandle new_methods(THREAD, methods);
1388 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1389 typeArrayHandle new_bcis(THREAD, bcis);
1391 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1392 objArrayHandle new_mirrors(THREAD, mirrors);
1394 if (!old_head.is_null()) {
1395 old_head->obj_at_put(trace_next_offset, new_head());
1396 }
1397 new_head->obj_at_put(trace_methods_offset, new_methods());
1398 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1399 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1401 _head = new_head();
1402 _methods = new_methods();
1403 _bcis = new_bcis();
1404 _mirrors = new_mirrors();
1405 _index = 0;
1406 }
1408 oop backtrace() {
1409 return _backtrace();
1410 }
1412 inline void push(Method* method, int bci, TRAPS) {
1413 // Smear the -1 bci to 0 since the array only holds unsigned
1414 // shorts. The later line number lookup would just smear the -1
1415 // to a 0 even if it could be recorded.
1416 if (bci == SynchronizationEntryBCI) bci = 0;
1417 assert(bci == (jushort)bci, "doesn't fit");
1419 if (_index >= trace_chunk_size) {
1420 methodHandle mhandle(THREAD, method);
1421 expand(CHECK);
1422 method = mhandle();
1423 }
1425 _methods->metadata_at_put(_index, method);
1426 _bcis->ushort_at_put(_index, bci);
1427 // we need to save the mirrors in the backtrace to keep the methods from
1428 // being unloaded if their class loader is unloaded while we still have
1429 // this stack trace.
1430 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1431 _index++;
1432 }
1434 Method* current_method() {
1435 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1436 return ((Method*)_methods->metadata_at(_index));
1437 }
1439 jushort current_bci() {
1440 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1441 return _bcis->ushort_at(_index);
1442 }
1443 };
1446 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1447 if (!StackTraceInThrowable) return;
1448 ResourceMark rm(THREAD);
1450 // Start out by clearing the backtrace for this object, in case the VM
1451 // runs out of memory while allocating the stack trace
1452 set_backtrace(throwable(), NULL);
1453 if (JDK_Version::is_gte_jdk14x_version()) {
1454 // New since 1.4, clear lazily constructed Java level stacktrace if
1455 // refilling occurs
1456 // This is unnecessary in 1.7+ but harmless
1457 clear_stacktrace(throwable());
1458 }
1460 int max_depth = MaxJavaStackTraceDepth;
1461 JavaThread* thread = (JavaThread*)THREAD;
1462 BacktraceBuilder bt(CHECK);
1464 // If there is no Java frame just return the method that was being called
1465 // with bci 0
1466 if (!thread->has_last_Java_frame()) {
1467 if (max_depth >= 1 && method() != NULL) {
1468 bt.push(method(), 0, CHECK);
1469 set_backtrace(throwable(), bt.backtrace());
1470 }
1471 return;
1472 }
1474 // Instead of using vframe directly, this version of fill_in_stack_trace
1475 // basically handles everything by hand. This significantly improved the
1476 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1477 // See bug 6333838 for more details.
1478 // The "ASSERT" here is to verify this method generates the exactly same stack
1479 // trace as utilizing vframe.
1480 #ifdef ASSERT
1481 vframeStream st(thread);
1482 methodHandle st_method(THREAD, st.method());
1483 #endif
1484 int total_count = 0;
1485 RegisterMap map(thread, false);
1486 int decode_offset = 0;
1487 nmethod* nm = NULL;
1488 bool skip_fillInStackTrace_check = false;
1489 bool skip_throwableInit_check = false;
1490 bool skip_hidden = !ShowHiddenFrames;
1492 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1493 Method* method = NULL;
1494 int bci = 0;
1496 // Compiled java method case.
1497 if (decode_offset != 0) {
1498 DebugInfoReadStream stream(nm, decode_offset);
1499 decode_offset = stream.read_int();
1500 method = (Method*)nm->metadata_at(stream.read_int());
1501 bci = stream.read_bci();
1502 } else {
1503 if (fr.is_first_frame()) break;
1504 address pc = fr.pc();
1505 if (fr.is_interpreted_frame()) {
1506 intptr_t bcx = fr.interpreter_frame_bcx();
1507 method = fr.interpreter_frame_method();
1508 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1509 fr = fr.sender(&map);
1510 } else {
1511 CodeBlob* cb = fr.cb();
1512 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1513 // but non nmethod
1514 fr = fr.sender(&map);
1515 if (cb == NULL || !cb->is_nmethod()) {
1516 continue;
1517 }
1518 nm = (nmethod*)cb;
1519 if (nm->method()->is_native()) {
1520 method = nm->method();
1521 bci = 0;
1522 } else {
1523 PcDesc* pd = nm->pc_desc_at(pc);
1524 decode_offset = pd->scope_decode_offset();
1525 // if decode_offset is not equal to 0, it will execute the
1526 // "compiled java method case" at the beginning of the loop.
1527 continue;
1528 }
1529 }
1530 }
1531 #ifdef ASSERT
1532 assert(st_method() == method && st.bci() == bci,
1533 "Wrong stack trace");
1534 st.next();
1535 // vframeStream::method isn't GC-safe so store off a copy
1536 // of the Method* in case we GC.
1537 if (!st.at_end()) {
1538 st_method = st.method();
1539 }
1540 #endif
1542 // the format of the stacktrace will be:
1543 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1544 // - 0 or more <init> methods for the exception class (skipped)
1545 // - rest of the stack
1547 if (!skip_fillInStackTrace_check) {
1548 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1549 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1550 throwable->is_a(method->method_holder())) {
1551 continue;
1552 }
1553 else {
1554 skip_fillInStackTrace_check = true; // gone past them all
1555 }
1556 }
1557 if (!skip_throwableInit_check) {
1558 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1560 // skip <init> methods of the exception class and superclasses
1561 // This is simlar to classic VM.
1562 if (method->name() == vmSymbols::object_initializer_name() &&
1563 throwable->is_a(method->method_holder())) {
1564 continue;
1565 } else {
1566 // there are none or we've seen them all - either way stop checking
1567 skip_throwableInit_check = true;
1568 }
1569 }
1570 if (method->is_hidden()) {
1571 if (skip_hidden) continue;
1572 }
1573 bt.push(method, bci, CHECK);
1574 total_count++;
1575 }
1577 // Put completed stack trace into throwable object
1578 set_backtrace(throwable(), bt.backtrace());
1579 }
1581 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1582 // No-op if stack trace is disabled
1583 if (!StackTraceInThrowable) {
1584 return;
1585 }
1587 // Disable stack traces for some preallocated out of memory errors
1588 if (!Universe::should_fill_in_stack_trace(throwable)) {
1589 return;
1590 }
1592 PRESERVE_EXCEPTION_MARK;
1594 JavaThread* thread = JavaThread::active();
1595 fill_in_stack_trace(throwable, method, thread);
1596 // ignore exceptions thrown during stack trace filling
1597 CLEAR_PENDING_EXCEPTION;
1598 }
1600 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1601 // Allocate stack trace - backtrace is created but not filled in
1603 // No-op if stack trace is disabled
1604 if (!StackTraceInThrowable) return;
1606 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1607 objArrayHandle backtrace (THREAD, h_oop);
1608 typeArrayOop m_oop = oopFactory::new_metaDataArray(trace_chunk_size, CHECK);
1609 typeArrayHandle methods (THREAD, m_oop);
1610 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1611 typeArrayHandle bcis(THREAD, b);
1612 objArrayOop mirror_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1613 objArrayHandle mirrors (THREAD, mirror_oop);
1615 // backtrace has space for one chunk (next is NULL)
1616 backtrace->obj_at_put(trace_methods_offset, methods());
1617 backtrace->obj_at_put(trace_bcis_offset, bcis());
1618 backtrace->obj_at_put(trace_mirrors_offset, mirrors());
1619 set_backtrace(throwable(), backtrace());
1620 }
1623 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1624 // Fill in stack trace into preallocated backtrace (no GC)
1626 // No-op if stack trace is disabled
1627 if (!StackTraceInThrowable) return;
1629 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1631 objArrayOop backtrace = (objArrayOop)java_lang_Throwable::backtrace(throwable());
1632 assert(backtrace != NULL, "backtrace not preallocated");
1634 oop m = backtrace->obj_at(trace_methods_offset);
1635 typeArrayOop methods = typeArrayOop(m);
1636 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1638 oop b = backtrace->obj_at(trace_bcis_offset);
1639 typeArrayOop bcis = typeArrayOop(b);
1640 assert(bcis != NULL, "bci array not preallocated");
1642 oop mr = backtrace->obj_at(trace_mirrors_offset);
1643 objArrayOop mirrors = objArrayOop(mr);
1644 assert(mirrors != NULL, "bci array not preallocated");
1646 assert(methods->length() == bcis->length() &&
1647 methods->length() == mirrors->length(),
1648 "method and bci arrays should match");
1650 JavaThread* thread = JavaThread::current();
1651 ResourceMark rm(thread);
1652 vframeStream st(thread);
1654 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1655 // methods as preallocated errors aren't created by "java" code.
1657 // fill in as much stack trace as possible
1658 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1659 int chunk_count = 0;
1661 for (;!st.at_end(); st.next()) {
1662 // Add entry and smear the -1 bci to 0 since the array only holds
1663 // unsigned shorts. The later line number lookup would just smear
1664 // the -1 to a 0 even if it could be recorded.
1665 int bci = st.bci();
1666 if (bci == SynchronizationEntryBCI) bci = 0;
1667 assert(bci == (jushort)bci, "doesn't fit");
1668 bcis->ushort_at_put(chunk_count, bci);
1669 methods->metadata_at_put(chunk_count, st.method());
1670 mirrors->obj_at_put(chunk_count,
1671 st.method()->method_holder()->java_mirror());
1673 chunk_count++;
1675 // Bail-out for deep stacks
1676 if (chunk_count >= max_chunks) break;
1677 }
1679 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1680 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1681 // can be removed in a JDK using this JVM version
1682 if (JDK_Version::is_gte_jdk17x_version()) {
1683 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1684 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1685 }
1687 }
1690 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1691 if (throwable == NULL) {
1692 THROW_0(vmSymbols::java_lang_NullPointerException());
1693 }
1694 objArrayOop chunk = objArrayOop(backtrace(throwable));
1695 int depth = 0;
1696 if (chunk != NULL) {
1697 // Iterate over chunks and count full ones
1698 while (true) {
1699 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1700 if (next == NULL) break;
1701 depth += trace_chunk_size;
1702 chunk = next;
1703 }
1704 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1705 // Count element in remaining partial chunk
1706 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1707 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1708 assert(methods != NULL && bcis != NULL, "sanity check");
1709 for (int i = 0; i < methods->length(); i++) {
1710 if (methods->metadata_at(i) == NULL) break;
1711 depth++;
1712 }
1713 }
1714 return depth;
1715 }
1718 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1719 if (throwable == NULL) {
1720 THROW_0(vmSymbols::java_lang_NullPointerException());
1721 }
1722 if (index < 0) {
1723 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1724 }
1725 // Compute how many chunks to skip and index into actual chunk
1726 objArrayOop chunk = objArrayOop(backtrace(throwable));
1727 int skip_chunks = index / trace_chunk_size;
1728 int chunk_index = index % trace_chunk_size;
1729 while (chunk != NULL && skip_chunks > 0) {
1730 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1731 skip_chunks--;
1732 }
1733 if (chunk == NULL) {
1734 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1735 }
1736 // Get method,bci from chunk
1737 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1738 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1739 assert(methods != NULL && bcis != NULL, "sanity check");
1740 methodHandle method(THREAD, ((Method*)methods->metadata_at(chunk_index)));
1741 int bci = bcis->ushort_at(chunk_index);
1742 // Chunk can be partial full
1743 if (method.is_null()) {
1744 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1745 }
1747 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1748 return element;
1749 }
1751 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1752 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1753 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1755 // Allocate java.lang.StackTraceElement instance
1756 Klass* k = SystemDictionary::StackTraceElement_klass();
1757 assert(k != NULL, "must be loaded in 1.4+");
1758 instanceKlassHandle ik (THREAD, k);
1759 if (ik->should_be_initialized()) {
1760 ik->initialize(CHECK_0);
1761 }
1763 Handle element = ik->allocate_instance_handle(CHECK_0);
1764 // Fill in class name
1765 ResourceMark rm(THREAD);
1766 const char* str = method->method_holder()->external_name();
1767 oop classname = StringTable::intern((char*) str, CHECK_0);
1768 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1769 // Fill in method name
1770 oop methodname = StringTable::intern(method->name(), CHECK_0);
1771 java_lang_StackTraceElement::set_methodName(element(), methodname);
1772 // Fill in source file name
1773 Symbol* source = method->method_holder()->source_file_name();
1774 if (ShowHiddenFrames && source == NULL)
1775 source = vmSymbols::unknown_class_name();
1776 oop filename = StringTable::intern(source, CHECK_0);
1777 java_lang_StackTraceElement::set_fileName(element(), filename);
1778 // File in source line number
1779 int line_number;
1780 if (method->is_native()) {
1781 // Negative value different from -1 below, enabling Java code in
1782 // class java.lang.StackTraceElement to distinguish "native" from
1783 // "no LineNumberTable".
1784 line_number = -2;
1785 } else {
1786 // Returns -1 if no LineNumberTable, and otherwise actual line number
1787 line_number = method->line_number_from_bci(bci);
1788 if (line_number == -1 && ShowHiddenFrames) {
1789 line_number = bci + 1000000;
1790 }
1791 }
1792 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1794 return element();
1795 }
1798 void java_lang_reflect_AccessibleObject::compute_offsets() {
1799 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1800 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1801 }
1803 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1804 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1805 return (jboolean) reflect->bool_field(override_offset);
1806 }
1808 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1809 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1810 reflect->bool_field_put(override_offset, (int) value);
1811 }
1813 void java_lang_reflect_Method::compute_offsets() {
1814 Klass* k = SystemDictionary::reflect_Method_klass();
1815 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1816 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1817 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1818 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1819 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1820 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1821 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1822 // The generic signature and annotations fields are only present in 1.5
1823 signature_offset = -1;
1824 annotations_offset = -1;
1825 parameter_annotations_offset = -1;
1826 annotation_default_offset = -1;
1827 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1828 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1829 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1830 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1831 }
1833 Handle java_lang_reflect_Method::create(TRAPS) {
1834 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1835 Klass* klass = SystemDictionary::reflect_Method_klass();
1836 // This class is eagerly initialized during VM initialization, since we keep a refence
1837 // to one of the methods
1838 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
1839 return InstanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1840 }
1842 oop java_lang_reflect_Method::clazz(oop reflect) {
1843 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1844 return reflect->obj_field(clazz_offset);
1845 }
1847 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1848 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1849 reflect->obj_field_put(clazz_offset, value);
1850 }
1852 int java_lang_reflect_Method::slot(oop reflect) {
1853 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1854 return reflect->int_field(slot_offset);
1855 }
1857 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1858 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1859 reflect->int_field_put(slot_offset, value);
1860 }
1862 oop java_lang_reflect_Method::name(oop method) {
1863 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1864 return method->obj_field(name_offset);
1865 }
1867 void java_lang_reflect_Method::set_name(oop method, oop value) {
1868 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1869 method->obj_field_put(name_offset, value);
1870 }
1872 oop java_lang_reflect_Method::return_type(oop method) {
1873 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1874 return method->obj_field(returnType_offset);
1875 }
1877 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1878 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1879 method->obj_field_put(returnType_offset, value);
1880 }
1882 oop java_lang_reflect_Method::parameter_types(oop method) {
1883 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1884 return method->obj_field(parameterTypes_offset);
1885 }
1887 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1888 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1889 method->obj_field_put(parameterTypes_offset, value);
1890 }
1892 oop java_lang_reflect_Method::exception_types(oop method) {
1893 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1894 return method->obj_field(exceptionTypes_offset);
1895 }
1897 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1898 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1899 method->obj_field_put(exceptionTypes_offset, value);
1900 }
1902 int java_lang_reflect_Method::modifiers(oop method) {
1903 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1904 return method->int_field(modifiers_offset);
1905 }
1907 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1908 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1909 method->int_field_put(modifiers_offset, value);
1910 }
1912 bool java_lang_reflect_Method::has_signature_field() {
1913 return (signature_offset >= 0);
1914 }
1916 oop java_lang_reflect_Method::signature(oop method) {
1917 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1918 assert(has_signature_field(), "signature field must be present");
1919 return method->obj_field(signature_offset);
1920 }
1922 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1923 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1924 assert(has_signature_field(), "signature field must be present");
1925 method->obj_field_put(signature_offset, value);
1926 }
1928 bool java_lang_reflect_Method::has_annotations_field() {
1929 return (annotations_offset >= 0);
1930 }
1932 oop java_lang_reflect_Method::annotations(oop method) {
1933 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1934 assert(has_annotations_field(), "annotations field must be present");
1935 return method->obj_field(annotations_offset);
1936 }
1938 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1939 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1940 assert(has_annotations_field(), "annotations field must be present");
1941 method->obj_field_put(annotations_offset, value);
1942 }
1944 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1945 return (parameter_annotations_offset >= 0);
1946 }
1948 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1949 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1950 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1951 return method->obj_field(parameter_annotations_offset);
1952 }
1954 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1955 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1956 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1957 method->obj_field_put(parameter_annotations_offset, value);
1958 }
1960 bool java_lang_reflect_Method::has_annotation_default_field() {
1961 return (annotation_default_offset >= 0);
1962 }
1964 oop java_lang_reflect_Method::annotation_default(oop method) {
1965 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1966 assert(has_annotation_default_field(), "annotation default field must be present");
1967 return method->obj_field(annotation_default_offset);
1968 }
1970 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1971 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1972 assert(has_annotation_default_field(), "annotation default field must be present");
1973 method->obj_field_put(annotation_default_offset, value);
1974 }
1976 void java_lang_reflect_Constructor::compute_offsets() {
1977 Klass* k = SystemDictionary::reflect_Constructor_klass();
1978 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1979 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1980 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1981 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1982 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1983 // The generic signature and annotations fields are only present in 1.5
1984 signature_offset = -1;
1985 annotations_offset = -1;
1986 parameter_annotations_offset = -1;
1987 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1988 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1989 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1990 }
1992 Handle java_lang_reflect_Constructor::create(TRAPS) {
1993 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1994 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1995 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1996 instanceKlassHandle klass (THREAD, k);
1997 // Ensure it is initialized
1998 klass->initialize(CHECK_NH);
1999 return klass->allocate_instance_handle(CHECK_NH);
2000 }
2002 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2003 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2004 return reflect->obj_field(clazz_offset);
2005 }
2007 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2008 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2009 reflect->obj_field_put(clazz_offset, value);
2010 }
2012 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2013 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2014 return constructor->obj_field(parameterTypes_offset);
2015 }
2017 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2018 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2019 constructor->obj_field_put(parameterTypes_offset, value);
2020 }
2022 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2023 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2024 return constructor->obj_field(exceptionTypes_offset);
2025 }
2027 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2028 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2029 constructor->obj_field_put(exceptionTypes_offset, value);
2030 }
2032 int java_lang_reflect_Constructor::slot(oop reflect) {
2033 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2034 return reflect->int_field(slot_offset);
2035 }
2037 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2038 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2039 reflect->int_field_put(slot_offset, value);
2040 }
2042 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2043 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2044 return constructor->int_field(modifiers_offset);
2045 }
2047 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2048 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2049 constructor->int_field_put(modifiers_offset, value);
2050 }
2052 bool java_lang_reflect_Constructor::has_signature_field() {
2053 return (signature_offset >= 0);
2054 }
2056 oop java_lang_reflect_Constructor::signature(oop constructor) {
2057 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2058 assert(has_signature_field(), "signature field must be present");
2059 return constructor->obj_field(signature_offset);
2060 }
2062 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2063 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2064 assert(has_signature_field(), "signature field must be present");
2065 constructor->obj_field_put(signature_offset, value);
2066 }
2068 bool java_lang_reflect_Constructor::has_annotations_field() {
2069 return (annotations_offset >= 0);
2070 }
2072 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2073 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2074 assert(has_annotations_field(), "annotations field must be present");
2075 return constructor->obj_field(annotations_offset);
2076 }
2078 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2079 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2080 assert(has_annotations_field(), "annotations field must be present");
2081 constructor->obj_field_put(annotations_offset, value);
2082 }
2084 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2085 return (parameter_annotations_offset >= 0);
2086 }
2088 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2089 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2090 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2091 return method->obj_field(parameter_annotations_offset);
2092 }
2094 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2095 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2096 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2097 method->obj_field_put(parameter_annotations_offset, value);
2098 }
2100 void java_lang_reflect_Field::compute_offsets() {
2101 Klass* k = SystemDictionary::reflect_Field_klass();
2102 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2103 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2104 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2105 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2106 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2107 // The generic signature and annotations fields are only present in 1.5
2108 signature_offset = -1;
2109 annotations_offset = -1;
2110 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2111 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2112 }
2114 Handle java_lang_reflect_Field::create(TRAPS) {
2115 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2116 Symbol* name = vmSymbols::java_lang_reflect_Field();
2117 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2118 instanceKlassHandle klass (THREAD, k);
2119 // Ensure it is initialized
2120 klass->initialize(CHECK_NH);
2121 return klass->allocate_instance_handle(CHECK_NH);
2122 }
2124 oop java_lang_reflect_Field::clazz(oop reflect) {
2125 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2126 return reflect->obj_field(clazz_offset);
2127 }
2129 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2130 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2131 reflect->obj_field_put(clazz_offset, value);
2132 }
2134 oop java_lang_reflect_Field::name(oop field) {
2135 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2136 return field->obj_field(name_offset);
2137 }
2139 void java_lang_reflect_Field::set_name(oop field, oop value) {
2140 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2141 field->obj_field_put(name_offset, value);
2142 }
2144 oop java_lang_reflect_Field::type(oop field) {
2145 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2146 return field->obj_field(type_offset);
2147 }
2149 void java_lang_reflect_Field::set_type(oop field, oop value) {
2150 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2151 field->obj_field_put(type_offset, value);
2152 }
2154 int java_lang_reflect_Field::slot(oop reflect) {
2155 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2156 return reflect->int_field(slot_offset);
2157 }
2159 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2160 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2161 reflect->int_field_put(slot_offset, value);
2162 }
2164 int java_lang_reflect_Field::modifiers(oop field) {
2165 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2166 return field->int_field(modifiers_offset);
2167 }
2169 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2170 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2171 field->int_field_put(modifiers_offset, value);
2172 }
2174 bool java_lang_reflect_Field::has_signature_field() {
2175 return (signature_offset >= 0);
2176 }
2178 oop java_lang_reflect_Field::signature(oop field) {
2179 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2180 assert(has_signature_field(), "signature field must be present");
2181 return field->obj_field(signature_offset);
2182 }
2184 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2185 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2186 assert(has_signature_field(), "signature field must be present");
2187 field->obj_field_put(signature_offset, value);
2188 }
2190 bool java_lang_reflect_Field::has_annotations_field() {
2191 return (annotations_offset >= 0);
2192 }
2194 oop java_lang_reflect_Field::annotations(oop field) {
2195 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2196 assert(has_annotations_field(), "annotations field must be present");
2197 return field->obj_field(annotations_offset);
2198 }
2200 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2201 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2202 assert(has_annotations_field(), "annotations field must be present");
2203 field->obj_field_put(annotations_offset, value);
2204 }
2207 void sun_reflect_ConstantPool::compute_offsets() {
2208 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2209 // This null test can be removed post beta
2210 if (k != NULL) {
2211 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2212 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2213 }
2214 }
2217 Handle sun_reflect_ConstantPool::create(TRAPS) {
2218 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2219 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2220 instanceKlassHandle klass (THREAD, k);
2221 // Ensure it is initialized
2222 klass->initialize(CHECK_NH);
2223 return klass->allocate_instance_handle(CHECK_NH);
2224 }
2227 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2228 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2229 oop mirror = value->pool_holder()->java_mirror();
2230 // Save the mirror to get back the constant pool.
2231 reflect->obj_field_put(_oop_offset, mirror);
2232 }
2234 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2235 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2237 oop mirror = reflect->obj_field(_oop_offset);
2238 Klass* k = java_lang_Class::as_Klass(mirror);
2239 assert(k->oop_is_instance(), "Must be");
2241 // Get the constant pool back from the klass. Since class redefinition
2242 // merges the new constant pool into the old, this is essentially the
2243 // same constant pool as the original. If constant pool merging is
2244 // no longer done in the future, this will have to change to save
2245 // the original.
2246 return InstanceKlass::cast(k)->constants();
2247 }
2249 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2250 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2251 // This null test can be removed post beta
2252 if (k != NULL) {
2253 compute_offset(_base_offset, k,
2254 vmSymbols::base_name(), vmSymbols::object_signature());
2255 }
2256 }
2258 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2259 Klass* k = SystemDictionary::box_klass(type);
2260 if (k == NULL) return NULL;
2261 instanceKlassHandle h (THREAD, k);
2262 if (!h->is_initialized()) h->initialize(CHECK_0);
2263 return h->allocate_instance(THREAD);
2264 }
2267 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2268 oop box = initialize_and_allocate(type, CHECK_0);
2269 if (box == NULL) return NULL;
2270 switch (type) {
2271 case T_BOOLEAN:
2272 box->bool_field_put(value_offset, value->z);
2273 break;
2274 case T_CHAR:
2275 box->char_field_put(value_offset, value->c);
2276 break;
2277 case T_FLOAT:
2278 box->float_field_put(value_offset, value->f);
2279 break;
2280 case T_DOUBLE:
2281 box->double_field_put(long_value_offset, value->d);
2282 break;
2283 case T_BYTE:
2284 box->byte_field_put(value_offset, value->b);
2285 break;
2286 case T_SHORT:
2287 box->short_field_put(value_offset, value->s);
2288 break;
2289 case T_INT:
2290 box->int_field_put(value_offset, value->i);
2291 break;
2292 case T_LONG:
2293 box->long_field_put(long_value_offset, value->j);
2294 break;
2295 default:
2296 return NULL;
2297 }
2298 return box;
2299 }
2302 BasicType java_lang_boxing_object::basic_type(oop box) {
2303 if (box == NULL) return T_ILLEGAL;
2304 BasicType type = SystemDictionary::box_klass_type(box->klass());
2305 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2306 return T_ILLEGAL;
2307 return type;
2308 }
2311 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2312 BasicType type = SystemDictionary::box_klass_type(box->klass());
2313 switch (type) {
2314 case T_BOOLEAN:
2315 value->z = box->bool_field(value_offset);
2316 break;
2317 case T_CHAR:
2318 value->c = box->char_field(value_offset);
2319 break;
2320 case T_FLOAT:
2321 value->f = box->float_field(value_offset);
2322 break;
2323 case T_DOUBLE:
2324 value->d = box->double_field(long_value_offset);
2325 break;
2326 case T_BYTE:
2327 value->b = box->byte_field(value_offset);
2328 break;
2329 case T_SHORT:
2330 value->s = box->short_field(value_offset);
2331 break;
2332 case T_INT:
2333 value->i = box->int_field(value_offset);
2334 break;
2335 case T_LONG:
2336 value->j = box->long_field(long_value_offset);
2337 break;
2338 default:
2339 return T_ILLEGAL;
2340 } // end switch
2341 return type;
2342 }
2345 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2346 BasicType type = SystemDictionary::box_klass_type(box->klass());
2347 switch (type) {
2348 case T_BOOLEAN:
2349 box->bool_field_put(value_offset, value->z);
2350 break;
2351 case T_CHAR:
2352 box->char_field_put(value_offset, value->c);
2353 break;
2354 case T_FLOAT:
2355 box->float_field_put(value_offset, value->f);
2356 break;
2357 case T_DOUBLE:
2358 box->double_field_put(long_value_offset, value->d);
2359 break;
2360 case T_BYTE:
2361 box->byte_field_put(value_offset, value->b);
2362 break;
2363 case T_SHORT:
2364 box->short_field_put(value_offset, value->s);
2365 break;
2366 case T_INT:
2367 box->int_field_put(value_offset, value->i);
2368 break;
2369 case T_LONG:
2370 box->long_field_put(long_value_offset, value->j);
2371 break;
2372 default:
2373 return T_ILLEGAL;
2374 } // end switch
2375 return type;
2376 }
2379 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2380 switch (type) {
2381 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2382 case T_CHAR: st->print("%d", value->c); break;
2383 case T_BYTE: st->print("%d", value->b); break;
2384 case T_SHORT: st->print("%d", value->s); break;
2385 case T_INT: st->print("%d", value->i); break;
2386 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2387 case T_FLOAT: st->print("%f", value->f); break;
2388 case T_DOUBLE: st->print("%lf", value->d); break;
2389 default: st->print("type %d?", type); break;
2390 }
2391 }
2394 // Support for java_lang_ref_Reference
2395 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
2396 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2397 address addr = ik->static_field_addr(static_lock_offset);
2398 return (HeapWord*) addr;
2399 }
2401 oop java_lang_ref_Reference::pending_list_lock() {
2402 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2403 address addr = ik->static_field_addr(static_lock_offset);
2404 if (UseCompressedOops) {
2405 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2406 } else {
2407 return oopDesc::load_decode_heap_oop((oop*)addr);
2408 }
2409 }
2411 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2412 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2413 address addr = ik->static_field_addr(static_pending_offset);
2414 // XXX This might not be HeapWord aligned, almost rather be char *.
2415 return (HeapWord*)addr;
2416 }
2418 oop java_lang_ref_Reference::pending_list() {
2419 char *addr = (char *)pending_list_addr();
2420 if (UseCompressedOops) {
2421 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2422 } else {
2423 return oopDesc::load_decode_heap_oop((oop*)addr);
2424 }
2425 }
2428 // Support for java_lang_ref_SoftReference
2430 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2431 return ref->long_field(timestamp_offset);
2432 }
2434 jlong java_lang_ref_SoftReference::clock() {
2435 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2436 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2437 return *offset;
2438 }
2440 void java_lang_ref_SoftReference::set_clock(jlong value) {
2441 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2442 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2443 *offset = value;
2444 }
2447 // Support for java_lang_invoke_MethodHandle
2449 int java_lang_invoke_MethodHandle::_type_offset;
2450 int java_lang_invoke_MethodHandle::_form_offset;
2452 int java_lang_invoke_MemberName::_clazz_offset;
2453 int java_lang_invoke_MemberName::_name_offset;
2454 int java_lang_invoke_MemberName::_type_offset;
2455 int java_lang_invoke_MemberName::_flags_offset;
2456 int java_lang_invoke_MemberName::_vmtarget_offset;
2457 int java_lang_invoke_MemberName::_vmloader_offset;
2458 int java_lang_invoke_MemberName::_vmindex_offset;
2460 int java_lang_invoke_LambdaForm::_vmentry_offset;
2462 void java_lang_invoke_MethodHandle::compute_offsets() {
2463 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
2464 if (klass_oop != NULL && EnableInvokeDynamic) {
2465 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2466 compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2467 if (_form_offset == 0) {
2468 EnableInvokeDynamic = false;
2469 }
2470 }
2471 }
2473 void java_lang_invoke_MemberName::compute_offsets() {
2474 Klass* klass_oop = SystemDictionary::MemberName_klass();
2475 if (klass_oop != NULL && EnableInvokeDynamic) {
2476 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2477 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2478 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2479 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2480 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2481 }
2482 }
2484 void java_lang_invoke_LambdaForm::compute_offsets() {
2485 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
2486 if (klass_oop != NULL && EnableInvokeDynamic) {
2487 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2488 }
2489 }
2491 oop java_lang_invoke_MethodHandle::type(oop mh) {
2492 return mh->obj_field(_type_offset);
2493 }
2495 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2496 mh->obj_field_put(_type_offset, mtype);
2497 }
2499 oop java_lang_invoke_MethodHandle::form(oop mh) {
2500 assert(_form_offset != 0, "");
2501 return mh->obj_field(_form_offset);
2502 }
2504 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2505 assert(_form_offset != 0, "");
2506 mh->obj_field_put(_form_offset, lform);
2507 }
2509 /// MemberName accessors
2511 oop java_lang_invoke_MemberName::clazz(oop mname) {
2512 assert(is_instance(mname), "wrong type");
2513 return mname->obj_field(_clazz_offset);
2514 }
2516 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2517 assert(is_instance(mname), "wrong type");
2518 mname->obj_field_put(_clazz_offset, clazz);
2519 }
2521 oop java_lang_invoke_MemberName::name(oop mname) {
2522 assert(is_instance(mname), "wrong type");
2523 return mname->obj_field(_name_offset);
2524 }
2526 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2527 assert(is_instance(mname), "wrong type");
2528 mname->obj_field_put(_name_offset, name);
2529 }
2531 oop java_lang_invoke_MemberName::type(oop mname) {
2532 assert(is_instance(mname), "wrong type");
2533 return mname->obj_field(_type_offset);
2534 }
2536 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2537 assert(is_instance(mname), "wrong type");
2538 mname->obj_field_put(_type_offset, type);
2539 }
2541 int java_lang_invoke_MemberName::flags(oop mname) {
2542 assert(is_instance(mname), "wrong type");
2543 return mname->int_field(_flags_offset);
2544 }
2546 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2547 assert(is_instance(mname), "wrong type");
2548 mname->int_field_put(_flags_offset, flags);
2549 }
2551 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
2552 assert(is_instance(mname), "wrong type");
2553 return (Metadata*)mname->address_field(_vmtarget_offset);
2554 }
2556 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
2557 assert(is_instance(mname), "wrong type");
2558 #ifdef ASSERT
2559 // check the type of the vmtarget
2560 if (ref != NULL) {
2561 switch (flags(mname) & (MN_IS_METHOD |
2562 MN_IS_CONSTRUCTOR |
2563 MN_IS_FIELD)) {
2564 case MN_IS_METHOD:
2565 case MN_IS_CONSTRUCTOR:
2566 assert(ref->is_method(), "should be a method");
2567 break;
2568 case MN_IS_FIELD:
2569 assert(ref->is_klass(), "should be a class");
2570 break;
2571 default:
2572 ShouldNotReachHere();
2573 }
2574 }
2575 #endif //ASSERT
2576 mname->address_field_put(_vmtarget_offset, (address)ref);
2577 oop loader = NULL;
2578 if (ref != NULL) {
2579 if (ref->is_klass()) {
2580 loader = ((Klass*)ref)->class_loader();
2581 } else if (ref->is_method()) {
2582 loader = ((Method*)ref)->method_holder()->class_loader();
2583 } else {
2584 ShouldNotReachHere();
2585 }
2586 }
2587 // Add a reference to the loader to ensure the metadata is kept alive
2588 mname->obj_field_put(_vmloader_offset, loader);
2589 }
2591 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2592 assert(is_instance(mname), "wrong type");
2593 return (intptr_t) mname->address_field(_vmindex_offset);
2594 }
2596 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2597 assert(is_instance(mname), "wrong type");
2598 mname->address_field_put(_vmindex_offset, (address) index);
2599 }
2601 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2602 assert(is_instance(lform), "wrong type");
2603 return lform->obj_field(_vmentry_offset);
2604 }
2607 // Support for java_lang_invoke_MethodType
2609 int java_lang_invoke_MethodType::_rtype_offset;
2610 int java_lang_invoke_MethodType::_ptypes_offset;
2612 void java_lang_invoke_MethodType::compute_offsets() {
2613 Klass* k = SystemDictionary::MethodType_klass();
2614 if (k != NULL) {
2615 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2616 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2617 }
2618 }
2620 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2621 st->print("(");
2622 objArrayOop pts = ptypes(mt);
2623 for (int i = 0, limit = pts->length(); i < limit; i++) {
2624 java_lang_Class::print_signature(pts->obj_at(i), st);
2625 }
2626 st->print(")");
2627 java_lang_Class::print_signature(rtype(mt), st);
2628 }
2630 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2631 ResourceMark rm;
2632 stringStream buffer(128);
2633 print_signature(mt, &buffer);
2634 const char* sigstr = buffer.base();
2635 int siglen = (int) buffer.size();
2636 Symbol *name;
2637 if (!intern_if_not_found) {
2638 name = SymbolTable::probe(sigstr, siglen);
2639 } else {
2640 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2641 }
2642 return name;
2643 }
2645 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2646 if (mt1 == mt2)
2647 return true;
2648 if (rtype(mt1) != rtype(mt2))
2649 return false;
2650 if (ptype_count(mt1) != ptype_count(mt2))
2651 return false;
2652 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2653 if (ptype(mt1, i) != ptype(mt2, i))
2654 return false;
2655 }
2656 return true;
2657 }
2659 oop java_lang_invoke_MethodType::rtype(oop mt) {
2660 assert(is_instance(mt), "must be a MethodType");
2661 return mt->obj_field(_rtype_offset);
2662 }
2664 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2665 assert(is_instance(mt), "must be a MethodType");
2666 return (objArrayOop) mt->obj_field(_ptypes_offset);
2667 }
2669 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2670 return ptypes(mt)->obj_at(idx);
2671 }
2673 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2674 return ptypes(mt)->length();
2675 }
2677 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2678 objArrayOop pts = ptypes(mt);
2679 int count = pts->length();
2680 int slots = 0;
2681 for (int i = 0; i < count; i++) {
2682 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2683 slots += type2size[bt];
2684 }
2685 return slots;
2686 }
2688 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2689 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2690 return type2size[bt];
2691 }
2694 // Support for java_lang_invoke_CallSite
2696 int java_lang_invoke_CallSite::_target_offset;
2698 void java_lang_invoke_CallSite::compute_offsets() {
2699 if (!EnableInvokeDynamic) return;
2700 Klass* k = SystemDictionary::CallSite_klass();
2701 if (k != NULL) {
2702 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2703 }
2704 }
2707 // Support for java_security_AccessControlContext
2709 int java_security_AccessControlContext::_context_offset = 0;
2710 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2711 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2713 void java_security_AccessControlContext::compute_offsets() {
2714 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2715 fieldDescriptor fd;
2716 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2718 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2719 fatal("Invalid layout of java.security.AccessControlContext");
2720 }
2721 _context_offset = fd.offset();
2723 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2724 fatal("Invalid layout of java.security.AccessControlContext");
2725 }
2726 _privilegedContext_offset = fd.offset();
2728 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2729 fatal("Invalid layout of java.security.AccessControlContext");
2730 }
2731 _isPrivileged_offset = fd.offset();
2732 }
2735 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2736 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2737 // Ensure klass is initialized
2738 InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2739 // Allocate result
2740 oop result = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2741 // Fill in values
2742 result->obj_field_put(_context_offset, context());
2743 result->obj_field_put(_privilegedContext_offset, privileged_context());
2744 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2745 return result;
2746 }
2749 // Support for java_lang_ClassLoader
2751 bool java_lang_ClassLoader::offsets_computed = false;
2752 int java_lang_ClassLoader::_loader_data_offset = -1;
2753 int java_lang_ClassLoader::_dependencies_offset = -1;
2754 int java_lang_ClassLoader::parallelCapable_offset = -1;
2756 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
2757 assert(loader != NULL && loader->is_oop(), "loader must be oop");
2758 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
2759 }
2761 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
2762 return *java_lang_ClassLoader::loader_data_addr(loader);
2763 }
2765 oop java_lang_ClassLoader::dependencies(oop loader) {
2766 return loader->obj_field(_dependencies_offset);
2767 }
2769 HeapWord* java_lang_ClassLoader::dependencies_addr(oop loader) {
2770 if (UseCompressedOops) {
2771 return (HeapWord*)loader->obj_field_addr<narrowOop>(_dependencies_offset);
2772 } else {
2773 return (HeapWord*)loader->obj_field_addr<oop>(_dependencies_offset);
2774 }
2775 }
2777 void java_lang_ClassLoader::compute_offsets() {
2778 assert(!offsets_computed, "offsets should be initialized only once");
2779 offsets_computed = true;
2781 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2782 Klass* k1 = SystemDictionary::ClassLoader_klass();
2783 compute_optional_offset(parallelCapable_offset,
2784 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2786 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2787 }
2789 oop java_lang_ClassLoader::parent(oop loader) {
2790 assert(is_instance(loader), "loader must be oop");
2791 return loader->obj_field(parent_offset);
2792 }
2794 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
2795 assert(is_instance(loader), "loader must be oop");
2796 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
2797 oop acl = loader;
2798 debug_only(jint loop_count = 0);
2799 // This loop taken verbatim from ClassLoader.java:
2800 do {
2801 acl = parent(acl);
2802 if (cl == acl) {
2803 return true;
2804 }
2805 assert(++loop_count > 0, "loop_count overflow");
2806 } while (acl != NULL);
2807 return false;
2808 }
2811 // For class loader classes, parallelCapable defined
2812 // based on non-null field
2813 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2814 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2815 if (!JDK_Version::is_gte_jdk17x_version()
2816 || parallelCapable_offset == -1) {
2817 // Default for backward compatibility is false
2818 return false;
2819 }
2820 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2821 }
2823 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2824 // Fix for 4474172; see evaluation for more details
2825 loader = non_reflection_class_loader(loader);
2827 oop cl = SystemDictionary::java_system_loader();
2828 while(cl != NULL) {
2829 if (cl == loader) return true;
2830 cl = parent(cl);
2831 }
2832 return false;
2833 }
2835 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2836 if (loader != NULL) {
2837 // See whether this is one of the class loaders associated with
2838 // the generated bytecodes for reflection, and if so, "magically"
2839 // delegate to its parent to prevent class loading from occurring
2840 // in places where applications using reflection didn't expect it.
2841 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2842 // This might be null in non-1.4 JDKs
2843 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2844 return parent(loader);
2845 }
2846 }
2847 return loader;
2848 }
2851 // Support for java_lang_System
2852 int java_lang_System::in_offset_in_bytes() {
2853 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2854 }
2857 int java_lang_System::out_offset_in_bytes() {
2858 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2859 }
2862 int java_lang_System::err_offset_in_bytes() {
2863 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2864 }
2868 int java_lang_Class::_klass_offset;
2869 int java_lang_Class::_array_klass_offset;
2870 int java_lang_Class::_resolved_constructor_offset;
2871 int java_lang_Class::_oop_size_offset;
2872 int java_lang_Class::_static_oop_field_count_offset;
2873 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
2874 int java_lang_Throwable::backtrace_offset;
2875 int java_lang_Throwable::detailMessage_offset;
2876 int java_lang_Throwable::cause_offset;
2877 int java_lang_Throwable::stackTrace_offset;
2878 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2879 int java_lang_reflect_AccessibleObject::override_offset;
2880 int java_lang_reflect_Method::clazz_offset;
2881 int java_lang_reflect_Method::name_offset;
2882 int java_lang_reflect_Method::returnType_offset;
2883 int java_lang_reflect_Method::parameterTypes_offset;
2884 int java_lang_reflect_Method::exceptionTypes_offset;
2885 int java_lang_reflect_Method::slot_offset;
2886 int java_lang_reflect_Method::modifiers_offset;
2887 int java_lang_reflect_Method::signature_offset;
2888 int java_lang_reflect_Method::annotations_offset;
2889 int java_lang_reflect_Method::parameter_annotations_offset;
2890 int java_lang_reflect_Method::annotation_default_offset;
2891 int java_lang_reflect_Constructor::clazz_offset;
2892 int java_lang_reflect_Constructor::parameterTypes_offset;
2893 int java_lang_reflect_Constructor::exceptionTypes_offset;
2894 int java_lang_reflect_Constructor::slot_offset;
2895 int java_lang_reflect_Constructor::modifiers_offset;
2896 int java_lang_reflect_Constructor::signature_offset;
2897 int java_lang_reflect_Constructor::annotations_offset;
2898 int java_lang_reflect_Constructor::parameter_annotations_offset;
2899 int java_lang_reflect_Field::clazz_offset;
2900 int java_lang_reflect_Field::name_offset;
2901 int java_lang_reflect_Field::type_offset;
2902 int java_lang_reflect_Field::slot_offset;
2903 int java_lang_reflect_Field::modifiers_offset;
2904 int java_lang_reflect_Field::signature_offset;
2905 int java_lang_reflect_Field::annotations_offset;
2906 int java_lang_boxing_object::value_offset;
2907 int java_lang_boxing_object::long_value_offset;
2908 int java_lang_ref_Reference::referent_offset;
2909 int java_lang_ref_Reference::queue_offset;
2910 int java_lang_ref_Reference::next_offset;
2911 int java_lang_ref_Reference::discovered_offset;
2912 int java_lang_ref_Reference::static_lock_offset;
2913 int java_lang_ref_Reference::static_pending_offset;
2914 int java_lang_ref_Reference::number_of_fake_oop_fields;
2915 int java_lang_ref_SoftReference::timestamp_offset;
2916 int java_lang_ref_SoftReference::static_clock_offset;
2917 int java_lang_ClassLoader::parent_offset;
2918 int java_lang_System::static_in_offset;
2919 int java_lang_System::static_out_offset;
2920 int java_lang_System::static_err_offset;
2921 int java_lang_StackTraceElement::declaringClass_offset;
2922 int java_lang_StackTraceElement::methodName_offset;
2923 int java_lang_StackTraceElement::fileName_offset;
2924 int java_lang_StackTraceElement::lineNumber_offset;
2925 int java_lang_AssertionStatusDirectives::classes_offset;
2926 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2927 int java_lang_AssertionStatusDirectives::packages_offset;
2928 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2929 int java_lang_AssertionStatusDirectives::deflt_offset;
2930 int java_nio_Buffer::_limit_offset;
2931 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2932 int sun_reflect_ConstantPool::_oop_offset;
2933 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2936 // Support for java_lang_StackTraceElement
2938 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2939 element->obj_field_put(fileName_offset, value);
2940 }
2942 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2943 element->obj_field_put(declaringClass_offset, value);
2944 }
2946 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2947 element->obj_field_put(methodName_offset, value);
2948 }
2950 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2951 element->int_field_put(lineNumber_offset, value);
2952 }
2955 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2957 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2958 o->obj_field_put(classes_offset, val);
2959 }
2961 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2962 o->obj_field_put(classEnabled_offset, val);
2963 }
2965 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2966 o->obj_field_put(packages_offset, val);
2967 }
2969 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2970 o->obj_field_put(packageEnabled_offset, val);
2971 }
2973 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2974 o->bool_field_put(deflt_offset, val);
2975 }
2978 // Support for intrinsification of java.nio.Buffer.checkIndex
2979 int java_nio_Buffer::limit_offset() {
2980 return _limit_offset;
2981 }
2984 void java_nio_Buffer::compute_offsets() {
2985 Klass* k = SystemDictionary::nio_Buffer_klass();
2986 assert(k != NULL, "must be loaded in 1.4+");
2987 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2988 }
2990 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2991 if (_owner_offset != 0) return;
2993 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
2994 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
2995 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
2996 compute_offset(_owner_offset, k,
2997 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
2998 }
3000 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3001 assert(_owner_offset != 0, "Must be initialized");
3002 return obj->obj_field(_owner_offset);
3003 }
3005 // Compute hard-coded offsets
3006 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3007 // are not available to determine the offset_of_static_fields.
3008 void JavaClasses::compute_hard_coded_offsets() {
3009 const int x = heapOopSize;
3010 const int header = instanceOopDesc::base_offset_in_bytes();
3012 // Throwable Class
3013 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3014 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3015 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3016 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3017 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3019 // java_lang_boxing_object
3020 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3021 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3023 // java_lang_ref_Reference:
3024 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3025 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3026 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3027 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3028 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3029 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3030 // Artificial fields for java_lang_ref_Reference
3031 // The first field is for the discovered field added in 1.4
3032 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3034 // java_lang_ref_SoftReference Class
3035 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3036 // Don't multiply static fields because they are always in wordSize units
3037 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3039 // java_lang_ClassLoader
3040 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3042 // java_lang_System
3043 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3044 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3045 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3047 // java_lang_StackTraceElement
3048 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3049 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3050 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3051 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3052 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3053 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3054 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3055 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3056 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3058 }
3061 // Compute non-hard-coded field offsets of all the classes in this file
3062 void JavaClasses::compute_offsets() {
3063 // java_lang_Class::compute_offsets was called earlier in bootstrap
3064 java_lang_ClassLoader::compute_offsets();
3065 java_lang_Thread::compute_offsets();
3066 java_lang_ThreadGroup::compute_offsets();
3067 if (EnableInvokeDynamic) {
3068 java_lang_invoke_MethodHandle::compute_offsets();
3069 java_lang_invoke_MemberName::compute_offsets();
3070 java_lang_invoke_LambdaForm::compute_offsets();
3071 java_lang_invoke_MethodType::compute_offsets();
3072 java_lang_invoke_CallSite::compute_offsets();
3073 }
3074 java_security_AccessControlContext::compute_offsets();
3075 // Initialize reflection classes. The layouts of these classes
3076 // changed with the new reflection implementation in JDK 1.4, and
3077 // since the Universe doesn't know what JDK version it is until this
3078 // point we defer computation of these offsets until now.
3079 java_lang_reflect_AccessibleObject::compute_offsets();
3080 java_lang_reflect_Method::compute_offsets();
3081 java_lang_reflect_Constructor::compute_offsets();
3082 java_lang_reflect_Field::compute_offsets();
3083 if (JDK_Version::is_gte_jdk14x_version()) {
3084 java_nio_Buffer::compute_offsets();
3085 }
3086 if (JDK_Version::is_gte_jdk15x_version()) {
3087 sun_reflect_ConstantPool::compute_offsets();
3088 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3089 }
3091 // generated interpreter code wants to know about the offsets we just computed:
3092 AbstractAssembler::update_delayed_values();
3093 }
3095 #ifndef PRODUCT
3097 // These functions exist to assert the validity of hard-coded field offsets to guard
3098 // against changes in the class files
3100 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3101 EXCEPTION_MARK;
3102 fieldDescriptor fd;
3103 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3104 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3105 instanceKlassHandle h_klass (THREAD, k);
3106 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3107 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3108 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3109 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3110 return false;
3111 }
3112 if (fd.is_static()) {
3113 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3114 return false;
3115 }
3116 if (fd.offset() == hardcoded_offset ) {
3117 return true;
3118 } else {
3119 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3120 klass_name, field_name, hardcoded_offset, fd.offset());
3121 return false;
3122 }
3123 }
3126 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3127 EXCEPTION_MARK;
3128 fieldDescriptor fd;
3129 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3130 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3131 instanceKlassHandle h_klass (THREAD, k);
3132 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3133 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3134 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3135 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3136 return false;
3137 }
3138 if (!fd.is_static()) {
3139 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3140 return false;
3141 }
3142 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3143 return true;
3144 } else {
3145 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());
3146 return false;
3147 }
3148 }
3151 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3152 EXCEPTION_MARK;
3153 fieldDescriptor fd;
3154 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3155 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3156 instanceKlassHandle h_klass (THREAD, k);
3157 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3158 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3159 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3160 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3161 return false;
3162 }
3163 if (!fd.is_static() || !fd.has_initial_value()) {
3164 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3165 return false;
3166 }
3167 if (!fd.initial_value_tag().is_int()) {
3168 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3169 return false;
3170 }
3171 jint field_value = fd.int_initial_value();
3172 if (field_value == hardcoded_constant) {
3173 return true;
3174 } else {
3175 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);
3176 return false;
3177 }
3178 }
3181 // Check the hard-coded field offsets of all the classes in this file
3183 void JavaClasses::check_offsets() {
3184 bool valid = true;
3185 HandleMark hm;
3187 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3188 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3190 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3191 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3193 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3194 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3196 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3197 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3199 // java.lang.String
3201 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3202 if (java_lang_String::has_offset_field()) {
3203 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3204 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3205 }
3206 if (java_lang_String::has_hash_field()) {
3207 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3208 }
3210 // java.lang.Class
3212 // Fake fields
3213 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3214 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3215 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3217 // java.lang.Throwable
3219 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3220 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3221 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3222 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3224 // Boxed primitive objects (java_lang_boxing_object)
3226 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3227 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3228 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3229 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3230 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3231 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3232 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3233 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3235 // java.lang.ClassLoader
3237 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3239 // java.lang.System
3241 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3242 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3243 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3245 // java.lang.StackTraceElement
3247 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3248 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3249 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3250 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3252 // java.lang.ref.Reference
3254 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3255 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3256 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3257 // Fake field
3258 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3259 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3260 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3262 // java.lang.ref.SoftReference
3264 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3265 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3267 // java.lang.AssertionStatusDirectives
3268 //
3269 // The CheckAssertionStatusDirectives boolean can be removed from here and
3270 // globals.hpp after the AssertionStatusDirectives class has been integrated
3271 // into merlin "for some time." Without it, the vm will fail with early
3272 // merlin builds.
3274 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3275 const char* nm = "java/lang/AssertionStatusDirectives";
3276 const char* sig = "[Ljava/lang/String;";
3277 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3278 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3279 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3280 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3281 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3282 }
3284 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3285 }
3287 #endif // PRODUCT
3289 int InjectedField::compute_offset() {
3290 Klass* klass_oop = klass();
3291 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3292 if (!may_be_java && !fs.access_flags().is_internal()) {
3293 // Only look at injected fields
3294 continue;
3295 }
3296 if (fs.name() == name() && fs.signature() == signature()) {
3297 return fs.offset();
3298 }
3299 }
3300 ResourceMark rm;
3301 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)" : "");
3302 #ifndef PRODUCT
3303 klass_oop->print();
3304 tty->print_cr("all fields:");
3305 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3306 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3307 }
3308 #endif //PRODUCT
3309 fatal("Invalid layout of preloaded class");
3310 return -1;
3311 }
3313 void javaClasses_init() {
3314 JavaClasses::compute_offsets();
3315 JavaClasses::check_offsets();
3316 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3317 }