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 */
24
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/klassOop.hpp"
42 #include "oops/methodOop.hpp"
43 #include "oops/symbol.hpp"
44 #include "oops/typeArrayOop.hpp"
45 #include "runtime/fieldDescriptor.hpp"
46 #include "runtime/handles.inline.hpp"
47 #include "runtime/interfaceSupport.hpp"
48 #include "runtime/java.hpp"
49 #include "runtime/javaCalls.hpp"
50 #include "runtime/safepoint.hpp"
51 #include "runtime/vframe.hpp"
52 #include "utilities/preserveException.hpp"
53 #ifdef TARGET_OS_FAMILY_linux
54 # include "thread_linux.inline.hpp"
55 #endif
56 #ifdef TARGET_OS_FAMILY_solaris
57 # include "thread_solaris.inline.hpp"
58 #endif
59 #ifdef TARGET_OS_FAMILY_windows
60 # include "thread_windows.inline.hpp"
61 #endif
62 #ifdef TARGET_OS_FAMILY_bsd
63 # include "thread_bsd.inline.hpp"
64 #endif
65
66 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
67 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
68
69 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
70 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
71
72 InjectedField JavaClasses::_injected_fields[] = {
73 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
74 };
75
76 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
77 return _injected_fields[id].compute_offset();
78 }
79
80
81 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
82 *field_count = 0;
83
84 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
85 if (sid == vmSymbols::NO_SID) {
86 // Only well known classes can inject fields
87 return NULL;
88 }
89
90 int count = 0;
91 int start = -1;
92
93 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
94 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
95 count++; \
96 if (start == -1) start = klass##_##name##_enum; \
97 }
98 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
99 #undef LOOKUP_INJECTED_FIELD
100
101 if (start != -1) {
102 *field_count = count;
103 return _injected_fields + start;
104 }
105 return NULL;
106 }
107
108
109 static bool find_field(instanceKlass* ik,
110 Symbol* name_symbol, Symbol* signature_symbol,
111 fieldDescriptor* fd,
112 bool allow_super = false) {
113 if (allow_super)
114 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
115 else
116 return ik->find_local_field(name_symbol, signature_symbol, fd);
117 }
118
119 // Helpful routine for computing field offsets at run time rather than hardcoding them
120 static void
121 compute_offset(int &dest_offset,
122 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
123 bool allow_super = false) {
124 fieldDescriptor fd;
125 instanceKlass* ik = instanceKlass::cast(klass_oop);
126 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
127 ResourceMark rm;
128 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
129 fatal("Invalid layout of preloaded class");
130 }
131 dest_offset = fd.offset();
132 }
133
134 // Same as above but for "optional" offsets that might not be present in certain JDK versions
135 static void
136 compute_optional_offset(int& dest_offset,
137 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
138 bool allow_super = false) {
139 fieldDescriptor fd;
140 instanceKlass* ik = instanceKlass::cast(klass_oop);
141 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
142 dest_offset = fd.offset();
143 }
144 }
145
146
147 int java_lang_String::value_offset = 0;
148 int java_lang_String::offset_offset = 0;
149 int java_lang_String::count_offset = 0;
150 int java_lang_String::hash_offset = 0;
151
152 bool java_lang_String::initialized = false;
153
154 void java_lang_String::compute_offsets() {
155 assert(!initialized, "offsets should be initialized only once");
156
157 klassOop k = SystemDictionary::String_klass();
158 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
159 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
160 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
161 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
162
163 initialized = true;
164 }
165
166 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) {
167 assert(initialized, "Must be initialized");
168 // Create the String object first, so there's a chance that the String
169 // and the char array it points to end up in the same cache line.
170 oop obj;
171 if (tenured) {
172 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_permanent_instance(CHECK_NH);
173 } else {
174 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
175 }
176
177 // Create the char array. The String object must be handlized here
178 // because GC can happen as a result of the allocation attempt.
179 Handle h_obj(THREAD, obj);
180 typeArrayOop buffer;
181 if (tenured) {
182 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH);
183 } else {
184 buffer = oopFactory::new_charArray(length, CHECK_NH);
185 }
186
187 // Point the String at the char array
188 obj = h_obj();
189 set_value(obj, buffer);
190 // No need to zero the offset, allocation zero'ed the entire String object
191 assert(offset(obj) == 0, "initial String offset should be zero");
192 //set_offset(obj, 0);
193 set_count(obj, length);
194
195 return h_obj;
196 }
197
198 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) {
199 Handle h_obj = basic_create(length, tenured, CHECK_NH);
200 typeArrayOop buffer = value(h_obj());
201 for (int index = 0; index < length; index++) {
202 buffer->char_at_put(index, unicode[index]);
203 }
204 return h_obj;
205 }
206
207 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
208 return basic_create_from_unicode(unicode, length, false, CHECK_NH);
209 }
210
211 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) {
212 return basic_create_from_unicode(unicode, length, JavaObjectsInPerm, CHECK_NH);
213 }
214
215 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
216 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0);
217 return h_obj();
218 }
219
220 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
221 if (utf8_str == NULL) {
222 return Handle();
223 }
224 int length = UTF8::unicode_length(utf8_str);
225 Handle h_obj = basic_create(length, false, CHECK_NH);
226 if (length > 0) {
227 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
228 }
229 return h_obj;
230 }
231
232 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
233 Handle h_obj = create_from_str(utf8_str, CHECK_0);
234 return h_obj();
235 }
236
237 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
238 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
239 Handle h_obj = basic_create(length, false, CHECK_NH);
240 if (length > 0) {
241 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
242 }
243 return h_obj;
244 }
245
246 // Converts a C string to a Java String based on current encoding
247 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
248 assert(str != NULL, "bad arguments");
249
250 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
251 static to_java_string_fn_t _to_java_string_fn = NULL;
252
253 if (_to_java_string_fn == NULL) {
254 void *lib_handle = os::native_java_library();
255 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
256 if (_to_java_string_fn == NULL) {
257 fatal("NewStringPlatform missing");
258 }
259 }
260
261 jstring js = NULL;
262 { JavaThread* thread = (JavaThread*)THREAD;
263 assert(thread->is_Java_thread(), "must be java thread");
264 HandleMark hm(thread);
265 ThreadToNativeFromVM ttn(thread);
266 js = (_to_java_string_fn)(thread->jni_environment(), str);
267 }
268 return Handle(THREAD, JNIHandles::resolve(js));
269 }
270
271 // Converts a Java String to a native C string that can be used for
272 // native OS calls.
273 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
274
275 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
276 static to_platform_string_fn_t _to_platform_string_fn = NULL;
277
278 if (_to_platform_string_fn == NULL) {
279 void *lib_handle = os::native_java_library();
280 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
281 if (_to_platform_string_fn == NULL) {
282 fatal("GetStringPlatformChars missing");
283 }
284 }
285
286 char *native_platform_string;
287 { JavaThread* thread = (JavaThread*)THREAD;
288 assert(thread->is_Java_thread(), "must be java thread");
289 JNIEnv *env = thread->jni_environment();
290 jstring js = (jstring) JNIHandles::make_local(env, java_string());
291 bool is_copy;
292 HandleMark hm(thread);
293 ThreadToNativeFromVM ttn(thread);
294 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
295 assert(is_copy == JNI_TRUE, "is_copy value changed");
296 JNIHandles::destroy_local(js);
297 }
298 return native_platform_string;
299 }
300
301 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
302 oop obj = java_string();
303 // Typical usage is to convert all '/' to '.' in string.
304 typeArrayOop value = java_lang_String::value(obj);
305 int offset = java_lang_String::offset(obj);
306 int length = java_lang_String::length(obj);
307
308 // First check if any from_char exist
309 int index; // Declared outside, used later
310 for (index = 0; index < length; index++) {
311 if (value->char_at(index + offset) == from_char) {
312 break;
313 }
314 }
315 if (index == length) {
316 // No from_char, so do not copy.
317 return java_string;
318 }
319
320 // Create new UNICODE buffer. Must handlize value because GC
321 // may happen during String and char array creation.
322 typeArrayHandle h_value(THREAD, value);
323 Handle string = basic_create(length, false, CHECK_NH);
324
325 typeArrayOop from_buffer = h_value();
326 typeArrayOop to_buffer = java_lang_String::value(string());
327
328 // Copy contents
329 for (index = 0; index < length; index++) {
330 jchar c = from_buffer->char_at(index + offset);
331 if (c == from_char) {
332 c = to_char;
333 }
334 to_buffer->char_at_put(index, c);
335 }
336 return string;
337 }
338
339 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) {
340 typeArrayOop value = java_lang_String::value(java_string);
341 int offset = java_lang_String::offset(java_string);
342 length = java_lang_String::length(java_string);
343
344 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
345 for (int index = 0; index < length; index++) {
346 result[index] = value->char_at(index + offset);
347 }
348 return result;
349 }
350
351 unsigned int java_lang_String::to_hash(oop java_string) {
352 int length = java_lang_String::length(java_string);
353 // Zero length string will hash to zero with String.toHash() function.
354 if (length == 0) return 0;
355
356 typeArrayOop value = java_lang_String::value(java_string);
357 int offset = java_lang_String::offset(java_string);
358 return java_lang_String::to_hash(value->char_at_addr(offset), length);
359 }
360
361 unsigned int java_lang_String::hash_string(oop java_string) {
362 int length = java_lang_String::length(java_string);
363 // Zero length string doesn't hash necessarily hash to zero.
364 if (length == 0) {
365 return StringTable::hash_string(NULL, 0);
366 }
367
368 typeArrayOop value = java_lang_String::value(java_string);
369 int offset = java_lang_String::offset(java_string);
370 return StringTable::hash_string(value->char_at_addr(offset), length);
371 }
372
373 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
374 oop obj = java_string();
375 typeArrayOop value = java_lang_String::value(obj);
376 int offset = java_lang_String::offset(obj);
377 int length = java_lang_String::length(obj);
378 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
379 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
380 return sym;
381 }
382
383 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
384 typeArrayOop value = java_lang_String::value(java_string);
385 int offset = java_lang_String::offset(java_string);
386 int length = java_lang_String::length(java_string);
387 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
388 return SymbolTable::probe_unicode(base, length);
389 }
390
391
392 int java_lang_String::utf8_length(oop java_string) {
393 typeArrayOop value = java_lang_String::value(java_string);
394 int offset = java_lang_String::offset(java_string);
395 int length = java_lang_String::length(java_string);
396 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
397 return UNICODE::utf8_length(position, length);
398 }
399
400 char* java_lang_String::as_utf8_string(oop java_string) {
401 typeArrayOop value = java_lang_String::value(java_string);
402 int offset = java_lang_String::offset(java_string);
403 int length = java_lang_String::length(java_string);
404 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
405 return UNICODE::as_utf8(position, length);
406 }
407
408 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
409 typeArrayOop value = java_lang_String::value(java_string);
410 int offset = java_lang_String::offset(java_string);
411 int length = java_lang_String::length(java_string);
412 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
413 return UNICODE::as_utf8(position, length, buf, buflen);
414 }
415
416 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
417 typeArrayOop value = java_lang_String::value(java_string);
418 int offset = java_lang_String::offset(java_string);
419 int length = java_lang_String::length(java_string);
420 assert(start + len <= length, "just checking");
421 jchar* position = value->char_at_addr(offset + start);
422 return UNICODE::as_utf8(position, len);
423 }
424
425 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
426 assert(SharedSkipVerify ||
427 java_string->klass() == SystemDictionary::String_klass(),
428 "must be java_string");
429 typeArrayOop value = java_lang_String::value(java_string);
430 int offset = java_lang_String::offset(java_string);
431 int length = java_lang_String::length(java_string);
432 if (length != len) {
433 return false;
434 }
435 for (int i = 0; i < len; i++) {
436 if (value->char_at(i + offset) != chars[i]) {
437 return false;
438 }
439 }
440 return true;
441 }
442
443 void java_lang_String::print(Handle java_string, outputStream* st) {
444 oop obj = java_string();
445 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
446 typeArrayOop value = java_lang_String::value(obj);
447 int offset = java_lang_String::offset(obj);
448 int length = java_lang_String::length(obj);
449
450 int end = MIN2(length, 100);
451 if (value == NULL) {
452 // This can happen if, e.g., printing a String
453 // object before its initializer has been called
454 st->print_cr("NULL");
455 } else {
456 st->print("\"");
457 for (int index = 0; index < length; index++) {
458 st->print("%c", value->char_at(index + offset));
459 }
460 st->print("\"");
461 }
462 }
463
464 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
465 Handle mirror (THREAD, fd->field_holder()->java_mirror());
466 assert(mirror.not_null() && fd->is_static(), "just checking");
467 if (fd->has_initial_value()) {
468 BasicType t = fd->field_type();
469 switch (t) {
470 case T_BYTE:
471 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
472 break;
473 case T_BOOLEAN:
474 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
475 break;
476 case T_CHAR:
477 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
478 break;
479 case T_SHORT:
480 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
481 break;
482 case T_INT:
483 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
484 break;
485 case T_FLOAT:
486 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
487 break;
488 case T_DOUBLE:
489 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
490 break;
491 case T_LONG:
492 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
493 break;
494 case T_OBJECT:
495 {
496 #ifdef ASSERT
497 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
498 assert(fd->signature() == sym, "just checking");
499 #endif
500 oop string = fd->string_initial_value(CHECK);
501 mirror()->obj_field_put(fd->offset(), string);
502 }
503 break;
504 default:
505 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
506 "Illegal ConstantValue attribute in class file");
507 }
508 }
509 }
510
511
512 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
513 assert(instanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
514
515 if (k->oop_is_instance()) {
516 // During bootstrap, java.lang.Class wasn't loaded so static field
517 // offsets were computed without the size added it. Go back and
518 // update all the static field offsets to included the size.
519 for (JavaFieldStream fs(instanceKlass::cast(k())); !fs.done(); fs.next()) {
520 if (fs.access_flags().is_static()) {
521 int real_offset = fs.offset() + instanceMirrorKlass::offset_of_static_fields();
522 fs.set_offset(real_offset);
523 }
524 }
525 }
526 create_mirror(k, CHECK);
527 }
528
529 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) {
530 assert(k->java_mirror() == NULL, "should only assign mirror once");
531 // Use this moment of initialization to cache modifier_flags also,
532 // to support Class.getModifiers(). Instance classes recalculate
533 // the cached flags after the class file is parsed, but before the
534 // class is put into the system dictionary.
535 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
536 k->set_modifier_flags(computed_modifiers);
537 if (SystemDictionary::Class_klass_loaded() && (k->oop_is_instance() || k->oop_is_javaArray())) {
538 // Allocate mirror (java.lang.Class instance)
539 Handle mirror = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
540
541 instanceMirrorKlass* mk = instanceMirrorKlass::cast(mirror->klass());
542 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
543
544 // It might also have a component mirror. This mirror must already exist.
545 if (k->oop_is_javaArray()) {
546 Handle comp_mirror;
547 if (k->oop_is_typeArray()) {
548 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type();
549 comp_mirror = Universe::java_mirror(type);
550 assert(comp_mirror.not_null(), "must have primitive mirror");
551 } else if (k->oop_is_objArray()) {
552 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass();
553 if (element_klass != NULL
554 && (Klass::cast(element_klass)->oop_is_instance() ||
555 Klass::cast(element_klass)->oop_is_javaArray())) {
556 comp_mirror = Klass::cast(element_klass)->java_mirror();
557 assert(comp_mirror.not_null(), "must have element mirror");
558 }
559 // else some object array internal to the VM, like systemObjArrayKlassObj
560 }
561 if (comp_mirror.not_null()) {
562 // Two-way link between the array klass and its component mirror:
563 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror());
564 set_array_klass(comp_mirror(), k->as_klassOop());
565 }
566 } else if (k->oop_is_instance()) {
567 // Initialize static fields
568 instanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
569 }
570 return mirror();
571 } else {
572 return NULL;
573 }
574 }
575
576
577
578 int java_lang_Class::oop_size(oop java_class) {
579 assert(_oop_size_offset != 0, "must be set");
580 return java_class->int_field(_oop_size_offset);
581 }
582 void java_lang_Class::set_oop_size(oop java_class, int size) {
583 assert(_oop_size_offset != 0, "must be set");
584 java_class->int_field_put(_oop_size_offset, size);
585 }
586 int java_lang_Class::static_oop_field_count(oop java_class) {
587 assert(_static_oop_field_count_offset != 0, "must be set");
588 return java_class->int_field(_static_oop_field_count_offset);
589 }
590 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
591 assert(_static_oop_field_count_offset != 0, "must be set");
592 java_class->int_field_put(_static_oop_field_count_offset, size);
593 }
594
595 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
596 // This should be improved by adding a field at the Java level or by
597 // introducing a new VM klass (see comment in ClassFileParser)
598 oop java_class = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance((oop)NULL, CHECK_0);
599 if (type != T_VOID) {
600 klassOop aklass = Universe::typeArrayKlassObj(type);
601 assert(aklass != NULL, "correct bootstrap");
602 set_array_klass(java_class, aklass);
603 }
604 #ifdef ASSERT
605 instanceMirrorKlass* mk = instanceMirrorKlass::cast(SystemDictionary::Class_klass());
606 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
607 #endif
608 return java_class;
609 }
610
611
612 klassOop java_lang_Class::as_klassOop(oop java_class) {
613 //%note memory_2
614 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
615 klassOop k = klassOop(java_class->obj_field(_klass_offset));
616 assert(k == NULL || k->is_klass(), "type check");
617 return k;
618 }
619
620
621 void java_lang_Class::set_klass(oop java_class, klassOop klass) {
622 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
623 java_class->obj_field_put(_klass_offset, klass);
624 }
625
626
627 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
628 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
629 Symbol* name = NULL;
630 bool is_instance = false;
631 if (is_primitive(java_class)) {
632 name = vmSymbols::type_signature(primitive_type(java_class));
633 } else {
634 klassOop k = as_klassOop(java_class);
635 is_instance = Klass::cast(k)->oop_is_instance();
636 name = Klass::cast(k)->name();
637 }
638 if (name == NULL) {
639 st->print("<null>");
640 return;
641 }
642 if (is_instance) st->print("L");
643 st->write((char*) name->base(), (int) name->utf8_length());
644 if (is_instance) st->print(";");
645 }
646
647 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
648 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
649 Symbol* name;
650 if (is_primitive(java_class)) {
651 name = vmSymbols::type_signature(primitive_type(java_class));
652 // Because this can create a new symbol, the caller has to decrement
653 // the refcount, so make adjustment here and below for symbols returned
654 // that are not created or incremented due to a successful lookup.
655 name->increment_refcount();
656 } else {
657 klassOop k = as_klassOop(java_class);
658 if (!Klass::cast(k)->oop_is_instance()) {
659 name = Klass::cast(k)->name();
660 name->increment_refcount();
661 } else {
662 ResourceMark rm;
663 const char* sigstr = Klass::cast(k)->signature_name();
664 int siglen = (int) strlen(sigstr);
665 if (!intern_if_not_found) {
666 name = SymbolTable::probe(sigstr, siglen);
667 } else {
668 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
669 }
670 }
671 }
672 return name;
673 }
674
675
676 klassOop java_lang_Class::array_klass(oop java_class) {
677 klassOop k = klassOop(java_class->obj_field(_array_klass_offset));
678 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass");
679 return k;
680 }
681
682
683 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) {
684 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass");
685 java_class->obj_field_put(_array_klass_offset, klass);
686 }
687
688
689 methodOop java_lang_Class::resolved_constructor(oop java_class) {
690 oop constructor = java_class->obj_field(_resolved_constructor_offset);
691 assert(constructor == NULL || constructor->is_method(), "should be method");
692 return methodOop(constructor);
693 }
694
695
696 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) {
697 assert(constructor->is_method(), "should be method");
698 java_class->obj_field_put(_resolved_constructor_offset, constructor);
699 }
700
701
702 bool java_lang_Class::is_primitive(oop java_class) {
703 // should assert:
704 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
705 klassOop k = klassOop(java_class->obj_field(_klass_offset));
706 return k == NULL;
707 }
708
709
710 BasicType java_lang_Class::primitive_type(oop java_class) {
711 assert(java_lang_Class::is_primitive(java_class), "just checking");
712 klassOop ak = klassOop(java_class->obj_field(_array_klass_offset));
713 BasicType type = T_VOID;
714 if (ak != NULL) {
715 // Note: create_basic_type_mirror above initializes ak to a non-null value.
716 type = arrayKlass::cast(ak)->element_type();
717 } else {
718 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
719 }
720 assert(Universe::java_mirror(type) == java_class, "must be consistent");
721 return type;
722 }
723
724 BasicType java_lang_Class::as_BasicType(oop java_class, klassOop* reference_klass) {
725 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
726 if (is_primitive(java_class)) {
727 if (reference_klass != NULL)
728 (*reference_klass) = NULL;
729 return primitive_type(java_class);
730 } else {
731 if (reference_klass != NULL)
732 (*reference_klass) = as_klassOop(java_class);
733 return T_OBJECT;
734 }
735 }
736
737
738 oop java_lang_Class::primitive_mirror(BasicType t) {
739 oop mirror = Universe::java_mirror(t);
740 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
741 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
742 return mirror;
743 }
744
745 bool java_lang_Class::offsets_computed = false;
746 int java_lang_Class::classRedefinedCount_offset = -1;
747
748 void java_lang_Class::compute_offsets() {
749 assert(!offsets_computed, "offsets should be initialized only once");
750 offsets_computed = true;
751
752 klassOop klass_oop = SystemDictionary::Class_klass();
753 // The classRedefinedCount field is only present starting in 1.5,
754 // so don't go fatal.
755 compute_optional_offset(classRedefinedCount_offset,
756 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
757
758 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
759 }
760
761 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
762 if (!JDK_Version::is_gte_jdk15x_version()
763 || classRedefinedCount_offset == -1) {
764 // The classRedefinedCount field is only present starting in 1.5.
765 // If we don't have an offset for it then just return -1 as a marker.
766 return -1;
767 }
768
769 return the_class_mirror->int_field(classRedefinedCount_offset);
770 }
771
772 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
773 if (!JDK_Version::is_gte_jdk15x_version()
774 || classRedefinedCount_offset == -1) {
775 // The classRedefinedCount field is only present starting in 1.5.
776 // If we don't have an offset for it then nothing to set.
777 return;
778 }
779
780 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
781 }
782
783
784 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
785 // platform thread structure, and a eetop offset which was used for thread
786 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
787 // merged, so in the HotSpot VM we just use the eetop field for the thread
788 // instead of the privateInfo_offset.
789 //
790 // Note: The stackSize field is only present starting in 1.4.
791
792 int java_lang_Thread::_name_offset = 0;
793 int java_lang_Thread::_group_offset = 0;
794 int java_lang_Thread::_contextClassLoader_offset = 0;
795 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
796 int java_lang_Thread::_priority_offset = 0;
797 int java_lang_Thread::_eetop_offset = 0;
798 int java_lang_Thread::_daemon_offset = 0;
799 int java_lang_Thread::_stillborn_offset = 0;
800 int java_lang_Thread::_stackSize_offset = 0;
801 int java_lang_Thread::_tid_offset = 0;
802 int java_lang_Thread::_thread_status_offset = 0;
803 int java_lang_Thread::_park_blocker_offset = 0;
804 int java_lang_Thread::_park_event_offset = 0 ;
805
806
807 void java_lang_Thread::compute_offsets() {
808 assert(_group_offset == 0, "offsets should be initialized only once");
809
810 klassOop k = SystemDictionary::Thread_klass();
811 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
812 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
813 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
814 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
815 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
816 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
817 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
818 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
819 // The stackSize field is only present starting in 1.4, so don't go fatal.
820 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
821 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
822 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
823 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
824 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
825 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
826 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
827 vmSymbols::long_signature());
828 }
829
830
831 JavaThread* java_lang_Thread::thread(oop java_thread) {
832 return (JavaThread*)java_thread->address_field(_eetop_offset);
833 }
834
835
836 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
837 java_thread->address_field_put(_eetop_offset, (address)thread);
838 }
839
840
841 typeArrayOop java_lang_Thread::name(oop java_thread) {
842 oop name = java_thread->obj_field(_name_offset);
843 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
844 return typeArrayOop(name);
845 }
846
847
848 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
849 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
850 java_thread->obj_field_put(_name_offset, name);
851 }
852
853
854 ThreadPriority java_lang_Thread::priority(oop java_thread) {
855 return (ThreadPriority)java_thread->int_field(_priority_offset);
856 }
857
858
859 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
860 java_thread->int_field_put(_priority_offset, priority);
861 }
862
863
864 oop java_lang_Thread::threadGroup(oop java_thread) {
865 return java_thread->obj_field(_group_offset);
866 }
867
868
869 bool java_lang_Thread::is_stillborn(oop java_thread) {
870 return java_thread->bool_field(_stillborn_offset) != 0;
871 }
872
873
874 // We never have reason to turn the stillborn bit off
875 void java_lang_Thread::set_stillborn(oop java_thread) {
876 java_thread->bool_field_put(_stillborn_offset, true);
877 }
878
879
880 bool java_lang_Thread::is_alive(oop java_thread) {
881 JavaThread* thr = java_lang_Thread::thread(java_thread);
882 return (thr != NULL);
883 }
884
885
886 bool java_lang_Thread::is_daemon(oop java_thread) {
887 return java_thread->bool_field(_daemon_offset) != 0;
888 }
889
890
891 void java_lang_Thread::set_daemon(oop java_thread) {
892 java_thread->bool_field_put(_daemon_offset, true);
893 }
894
895 oop java_lang_Thread::context_class_loader(oop java_thread) {
896 return java_thread->obj_field(_contextClassLoader_offset);
897 }
898
899 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
900 return java_thread->obj_field(_inheritedAccessControlContext_offset);
901 }
902
903
904 jlong java_lang_Thread::stackSize(oop java_thread) {
905 // The stackSize field is only present starting in 1.4
906 if (_stackSize_offset > 0) {
907 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
908 return java_thread->long_field(_stackSize_offset);
909 } else {
910 return 0;
911 }
912 }
913
914 // Write the thread status value to threadStatus field in java.lang.Thread java class.
915 void java_lang_Thread::set_thread_status(oop java_thread,
916 java_lang_Thread::ThreadStatus status) {
917 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm");
918 // The threadStatus is only present starting in 1.5
919 if (_thread_status_offset > 0) {
920 java_thread->int_field_put(_thread_status_offset, status);
921 }
922 }
923
924 // Read thread status value from threadStatus field in java.lang.Thread java class.
925 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
926 assert(Thread::current()->is_VM_thread() ||
927 JavaThread::current()->thread_state() == _thread_in_vm,
928 "Java Thread is not running in vm");
929 // The threadStatus is only present starting in 1.5
930 if (_thread_status_offset > 0) {
931 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
932 } else {
933 // All we can easily figure out is if it is alive, but that is
934 // enough info for a valid unknown status.
935 // These aren't restricted to valid set ThreadStatus values, so
936 // use JVMTI values and cast.
937 JavaThread* thr = java_lang_Thread::thread(java_thread);
938 if (thr == NULL) {
939 // the thread hasn't run yet or is in the process of exiting
940 return NEW;
941 }
942 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
943 }
944 }
945
946
947 jlong java_lang_Thread::thread_id(oop java_thread) {
948 // The thread ID field is only present starting in 1.5
949 if (_tid_offset > 0) {
950 return java_thread->long_field(_tid_offset);
951 } else {
952 return 0;
953 }
954 }
955
956 oop java_lang_Thread::park_blocker(oop java_thread) {
957 assert(JDK_Version::current().supports_thread_park_blocker() &&
958 _park_blocker_offset != 0, "Must support parkBlocker field");
959
960 if (_park_blocker_offset > 0) {
961 return java_thread->obj_field(_park_blocker_offset);
962 }
963
964 return NULL;
965 }
966
967 jlong java_lang_Thread::park_event(oop java_thread) {
968 if (_park_event_offset > 0) {
969 return java_thread->long_field(_park_event_offset);
970 }
971 return 0;
972 }
973
974 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
975 if (_park_event_offset > 0) {
976 java_thread->long_field_put(_park_event_offset, ptr);
977 return true;
978 }
979 return false;
980 }
981
982
983 const char* java_lang_Thread::thread_status_name(oop java_thread) {
984 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
985 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
986 switch (status) {
987 case NEW : return "NEW";
988 case RUNNABLE : return "RUNNABLE";
989 case SLEEPING : return "TIMED_WAITING (sleeping)";
990 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
991 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
992 case PARKED : return "WAITING (parking)";
993 case PARKED_TIMED : return "TIMED_WAITING (parking)";
994 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
995 case TERMINATED : return "TERMINATED";
996 default : return "UNKNOWN";
997 };
998 }
999 int java_lang_ThreadGroup::_parent_offset = 0;
1000 int java_lang_ThreadGroup::_name_offset = 0;
1001 int java_lang_ThreadGroup::_threads_offset = 0;
1002 int java_lang_ThreadGroup::_groups_offset = 0;
1003 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1004 int java_lang_ThreadGroup::_destroyed_offset = 0;
1005 int java_lang_ThreadGroup::_daemon_offset = 0;
1006 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1007 int java_lang_ThreadGroup::_nthreads_offset = 0;
1008 int java_lang_ThreadGroup::_ngroups_offset = 0;
1009
1010 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1011 assert(java_thread_group->is_oop(), "thread group must be oop");
1012 return java_thread_group->obj_field(_parent_offset);
1013 }
1014
1015 // ("name as oop" accessor is not necessary)
1016
1017 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1018 oop name = java_thread_group->obj_field(_name_offset);
1019 // ThreadGroup.name can be null
1020 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1021 }
1022
1023 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1024 assert(java_thread_group->is_oop(), "thread group must be oop");
1025 return java_thread_group->int_field(_nthreads_offset);
1026 }
1027
1028 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1029 oop threads = java_thread_group->obj_field(_threads_offset);
1030 assert(threads != NULL, "threadgroups should have threads");
1031 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1032 return objArrayOop(threads);
1033 }
1034
1035 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1036 assert(java_thread_group->is_oop(), "thread group must be oop");
1037 return java_thread_group->int_field(_ngroups_offset);
1038 }
1039
1040 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1041 oop groups = java_thread_group->obj_field(_groups_offset);
1042 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1043 return objArrayOop(groups);
1044 }
1045
1046 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1047 assert(java_thread_group->is_oop(), "thread group must be oop");
1048 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1049 }
1050
1051 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1052 assert(java_thread_group->is_oop(), "thread group must be oop");
1053 return java_thread_group->bool_field(_destroyed_offset) != 0;
1054 }
1055
1056 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1057 assert(java_thread_group->is_oop(), "thread group must be oop");
1058 return java_thread_group->bool_field(_daemon_offset) != 0;
1059 }
1060
1061 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1062 assert(java_thread_group->is_oop(), "thread group must be oop");
1063 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1064 }
1065
1066 void java_lang_ThreadGroup::compute_offsets() {
1067 assert(_parent_offset == 0, "offsets should be initialized only once");
1068
1069 klassOop k = SystemDictionary::ThreadGroup_klass();
1070
1071 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1072 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1073 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1074 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1075 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1076 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1077 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1078 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1079 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1080 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1081 }
1082
1083 oop java_lang_Throwable::unassigned_stacktrace() {
1084 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Throwable_klass());
1085 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1086 if (UseCompressedOops) {
1087 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1088 } else {
1089 return oopDesc::load_decode_heap_oop((oop*)addr);
1090 }
1091 }
1092
1093 oop java_lang_Throwable::backtrace(oop throwable) {
1094 return throwable->obj_field_acquire(backtrace_offset);
1095 }
1096
1097
1098 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1099 throwable->release_obj_field_put(backtrace_offset, value);
1100 }
1101
1102
1103 oop java_lang_Throwable::message(oop throwable) {
1104 return throwable->obj_field(detailMessage_offset);
1105 }
1106
1107
1108 oop java_lang_Throwable::message(Handle throwable) {
1109 return throwable->obj_field(detailMessage_offset);
1110 }
1111
1112
1113 void java_lang_Throwable::set_message(oop throwable, oop value) {
1114 throwable->obj_field_put(detailMessage_offset, value);
1115 }
1116
1117
1118 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1119 throwable->obj_field_put(stackTrace_offset, st_element_array);
1120 }
1121
1122 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1123 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1124 set_stacktrace(throwable, NULL);
1125 }
1126
1127
1128 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1129 ResourceMark rm;
1130 klassOop k = throwable->klass();
1131 assert(k != NULL, "just checking");
1132 st->print("%s", instanceKlass::cast(k)->external_name());
1133 oop msg = message(throwable);
1134 if (msg != NULL) {
1135 st->print(": %s", java_lang_String::as_utf8_string(msg));
1136 }
1137 }
1138
1139
1140 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1141 ResourceMark rm;
1142 klassOop k = throwable->klass();
1143 assert(k != NULL, "just checking");
1144 st->print("%s", instanceKlass::cast(k)->external_name());
1145 oop msg = message(throwable);
1146 if (msg != NULL) {
1147 st->print(": %s", java_lang_String::as_utf8_string(msg));
1148 }
1149 }
1150
1151 // Print stack trace element to resource allocated buffer
1152 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) {
1153 // Get strings and string lengths
1154 instanceKlass* klass = instanceKlass::cast(method->method_holder());
1155 const char* klass_name = klass->external_name();
1156 int buf_len = (int)strlen(klass_name);
1157 char* source_file_name;
1158 if (klass->source_file_name() == NULL) {
1159 source_file_name = NULL;
1160 } else {
1161 source_file_name = klass->source_file_name()->as_C_string();
1162 buf_len += (int)strlen(source_file_name);
1163 }
1164 char* method_name = method->name()->as_C_string();
1165 buf_len += (int)strlen(method_name);
1166
1167 // Allocate temporary buffer with extra space for formatting and line number
1168 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1169
1170 // Print stack trace line in buffer
1171 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1172 if (method->is_native()) {
1173 strcat(buf, "(Native Method)");
1174 } else {
1175 int line_number = method->line_number_from_bci(bci);
1176 if (source_file_name != NULL && (line_number != -1)) {
1177 // Sourcename and linenumber
1178 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1179 } else if (source_file_name != NULL) {
1180 // Just sourcename
1181 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1182 } else {
1183 // Neither soucename and linenumber
1184 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1185 }
1186 nmethod* nm = method->code();
1187 if (WizardMode && nm != NULL) {
1188 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1189 }
1190 }
1191
1192 return buf;
1193 }
1194
1195
1196 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) {
1197 ResourceMark rm;
1198 char* buf = print_stack_element_to_buffer(method, bci);
1199 print_to_stream(stream, buf);
1200 }
1201
1202 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) {
1203 ResourceMark rm;
1204 char* buf = print_stack_element_to_buffer(method, bci);
1205 st->print_cr("%s", buf);
1206 }
1207
1208 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1209 if (stream.is_null()) {
1210 tty->print_cr("%s", str);
1211 } else {
1212 EXCEPTION_MARK;
1213 JavaValue result(T_VOID);
1214 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1215 if (!HAS_PENDING_EXCEPTION) {
1216 JavaCalls::call_virtual(&result,
1217 stream,
1218 KlassHandle(THREAD, stream->klass()),
1219 vmSymbols::println_name(),
1220 vmSymbols::char_array_void_signature(),
1221 arg,
1222 THREAD);
1223 }
1224 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1225 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1226 }
1227
1228 }
1229
1230
1231 const char* java_lang_Throwable::no_stack_trace_message() {
1232 return "\t<<no stack trace available>>";
1233 }
1234
1235
1236 // Currently used only for exceptions occurring during startup
1237 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1238 Thread *THREAD = Thread::current();
1239 Handle h_throwable(THREAD, throwable);
1240 while (h_throwable.not_null()) {
1241 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1242 if (result.is_null()) {
1243 st->print_cr(no_stack_trace_message());
1244 return;
1245 }
1246
1247 while (result.not_null()) {
1248 objArrayHandle methods (THREAD,
1249 objArrayOop(result->obj_at(trace_methods_offset)));
1250 typeArrayHandle bcis (THREAD,
1251 typeArrayOop(result->obj_at(trace_bcis_offset)));
1252
1253 if (methods.is_null() || bcis.is_null()) {
1254 st->print_cr(no_stack_trace_message());
1255 return;
1256 }
1257
1258 int length = methods()->length();
1259 for (int index = 0; index < length; index++) {
1260 methodOop method = methodOop(methods()->obj_at(index));
1261 if (method == NULL) goto handle_cause;
1262 int bci = bcis->ushort_at(index);
1263 print_stack_element(st, method, bci);
1264 }
1265 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1266 }
1267 handle_cause:
1268 {
1269 EXCEPTION_MARK;
1270 JavaValue result(T_OBJECT);
1271 JavaCalls::call_virtual(&result,
1272 h_throwable,
1273 KlassHandle(THREAD, h_throwable->klass()),
1274 vmSymbols::getCause_name(),
1275 vmSymbols::void_throwable_signature(),
1276 THREAD);
1277 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1278 if (HAS_PENDING_EXCEPTION) {
1279 CLEAR_PENDING_EXCEPTION;
1280 h_throwable = Handle();
1281 } else {
1282 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1283 if (h_throwable.not_null()) {
1284 st->print("Caused by: ");
1285 print(h_throwable, st);
1286 st->cr();
1287 }
1288 }
1289 }
1290 }
1291 }
1292
1293
1294 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1295 // Note: this is no longer used in Merlin, but we support it for compatibility.
1296 Thread *thread = Thread::current();
1297 Handle stream(thread, print_stream);
1298 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1299 if (result.is_null()) {
1300 print_to_stream(stream, no_stack_trace_message());
1301 return;
1302 }
1303
1304 while (result.not_null()) {
1305 objArrayHandle methods (thread,
1306 objArrayOop(result->obj_at(trace_methods_offset)));
1307 typeArrayHandle bcis (thread,
1308 typeArrayOop(result->obj_at(trace_bcis_offset)));
1309
1310 if (methods.is_null() || bcis.is_null()) {
1311 print_to_stream(stream, no_stack_trace_message());
1312 return;
1313 }
1314
1315 int length = methods()->length();
1316 for (int index = 0; index < length; index++) {
1317 methodOop method = methodOop(methods()->obj_at(index));
1318 if (method == NULL) return;
1319 int bci = bcis->ushort_at(index);
1320 print_stack_element(stream, method, bci);
1321 }
1322 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1323 }
1324 }
1325
1326 // This class provides a simple wrapper over the internal structure of
1327 // exception backtrace to insulate users of the backtrace from needing
1328 // to know what it looks like.
1329 class BacktraceBuilder: public StackObj {
1330 private:
1331 Handle _backtrace;
1332 objArrayOop _head;
1333 objArrayOop _methods;
1334 typeArrayOop _bcis;
1335 int _index;
1336 No_Safepoint_Verifier _nsv;
1337
1338 public:
1339
1340 enum {
1341 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1342 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1343 trace_next_offset = java_lang_Throwable::trace_next_offset,
1344 trace_size = java_lang_Throwable::trace_size,
1345 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1346 };
1347
1348 // constructor for new backtrace
1349 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) {
1350 expand(CHECK);
1351 _backtrace = _head;
1352 _index = 0;
1353 }
1354
1355 void expand(TRAPS) {
1356 objArrayHandle old_head(THREAD, _head);
1357 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1358
1359 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1360 objArrayHandle new_head(THREAD, head);
1361
1362 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1363 objArrayHandle new_methods(THREAD, methods);
1364
1365 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1366 typeArrayHandle new_bcis(THREAD, bcis);
1367
1368 if (!old_head.is_null()) {
1369 old_head->obj_at_put(trace_next_offset, new_head());
1370 }
1371 new_head->obj_at_put(trace_methods_offset, new_methods());
1372 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1373
1374 _head = new_head();
1375 _methods = new_methods();
1376 _bcis = new_bcis();
1377 _index = 0;
1378 }
1379
1380 oop backtrace() {
1381 return _backtrace();
1382 }
1383
1384 inline void push(methodOop method, int bci, TRAPS) {
1385 // Smear the -1 bci to 0 since the array only holds unsigned
1386 // shorts. The later line number lookup would just smear the -1
1387 // to a 0 even if it could be recorded.
1388 if (bci == SynchronizationEntryBCI) bci = 0;
1389 assert(bci == (jushort)bci, "doesn't fit");
1390
1391 if (_index >= trace_chunk_size) {
1392 methodHandle mhandle(THREAD, method);
1393 expand(CHECK);
1394 method = mhandle();
1395 }
1396
1397 _methods->obj_at_put(_index, method);
1398 _bcis->ushort_at_put(_index, bci);
1399 _index++;
1400 }
1401
1402 methodOop current_method() {
1403 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1404 return methodOop(_methods->obj_at(_index));
1405 }
1406
1407 jushort current_bci() {
1408 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1409 return _bcis->ushort_at(_index);
1410 }
1411 };
1412
1413
1414 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1415 if (!StackTraceInThrowable) return;
1416 ResourceMark rm(THREAD);
1417
1418 // Start out by clearing the backtrace for this object, in case the VM
1419 // runs out of memory while allocating the stack trace
1420 set_backtrace(throwable(), NULL);
1421 if (JDK_Version::is_gte_jdk14x_version()) {
1422 // New since 1.4, clear lazily constructed Java level stacktrace if
1423 // refilling occurs
1424 // This is unnecessary in 1.7+ but harmless
1425 clear_stacktrace(throwable());
1426 }
1427
1428 int max_depth = MaxJavaStackTraceDepth;
1429 JavaThread* thread = (JavaThread*)THREAD;
1430 BacktraceBuilder bt(CHECK);
1431
1432 // If there is no Java frame just return the method that was being called
1433 // with bci 0
1434 if (!thread->has_last_Java_frame()) {
1435 if (max_depth >= 1 && method() != NULL) {
1436 bt.push(method(), 0, CHECK);
1437 set_backtrace(throwable(), bt.backtrace());
1438 }
1439 return;
1440 }
1441
1442 // Instead of using vframe directly, this version of fill_in_stack_trace
1443 // basically handles everything by hand. This significantly improved the
1444 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1445 // See bug 6333838 for more details.
1446 // The "ASSERT" here is to verify this method generates the exactly same stack
1447 // trace as utilizing vframe.
1448 #ifdef ASSERT
1449 vframeStream st(thread);
1450 methodHandle st_method(THREAD, st.method());
1451 #endif
1452 int total_count = 0;
1453 RegisterMap map(thread, false);
1454 int decode_offset = 0;
1455 nmethod* nm = NULL;
1456 bool skip_fillInStackTrace_check = false;
1457 bool skip_throwableInit_check = false;
1458
1459 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1460 methodOop method = NULL;
1461 int bci = 0;
1462
1463 // Compiled java method case.
1464 if (decode_offset != 0) {
1465 DebugInfoReadStream stream(nm, decode_offset);
1466 decode_offset = stream.read_int();
1467 method = (methodOop)nm->oop_at(stream.read_int());
1468 bci = stream.read_bci();
1469 } else {
1470 if (fr.is_first_frame()) break;
1471 address pc = fr.pc();
1472 if (fr.is_interpreted_frame()) {
1473 intptr_t bcx = fr.interpreter_frame_bcx();
1474 method = fr.interpreter_frame_method();
1475 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1476 fr = fr.sender(&map);
1477 } else {
1478 CodeBlob* cb = fr.cb();
1479 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1480 // but non nmethod
1481 fr = fr.sender(&map);
1482 if (cb == NULL || !cb->is_nmethod()) {
1483 continue;
1484 }
1485 nm = (nmethod*)cb;
1486 if (nm->method()->is_native()) {
1487 method = nm->method();
1488 bci = 0;
1489 } else {
1490 PcDesc* pd = nm->pc_desc_at(pc);
1491 decode_offset = pd->scope_decode_offset();
1492 // if decode_offset is not equal to 0, it will execute the
1493 // "compiled java method case" at the beginning of the loop.
1494 continue;
1495 }
1496 }
1497 }
1498 #ifdef ASSERT
1499 assert(st_method() == method && st.bci() == bci,
1500 "Wrong stack trace");
1501 st.next();
1502 // vframeStream::method isn't GC-safe so store off a copy
1503 // of the methodOop in case we GC.
1504 if (!st.at_end()) {
1505 st_method = st.method();
1506 }
1507 #endif
1508
1509 // the format of the stacktrace will be:
1510 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1511 // - 0 or more <init> methods for the exception class (skipped)
1512 // - rest of the stack
1513
1514 if (!skip_fillInStackTrace_check) {
1515 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1516 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1517 throwable->is_a(method->method_holder())) {
1518 continue;
1519 }
1520 else {
1521 skip_fillInStackTrace_check = true; // gone past them all
1522 }
1523 }
1524 if (!skip_throwableInit_check) {
1525 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1526
1527 // skip <init> methods of the exception class and superclasses
1528 // This is simlar to classic VM.
1529 if (method->name() == vmSymbols::object_initializer_name() &&
1530 throwable->is_a(method->method_holder())) {
1531 continue;
1532 } else {
1533 // there are none or we've seen them all - either way stop checking
1534 skip_throwableInit_check = true;
1535 }
1536 }
1537 bt.push(method, bci, CHECK);
1538 total_count++;
1539 }
1540
1541 // Put completed stack trace into throwable object
1542 set_backtrace(throwable(), bt.backtrace());
1543 }
1544
1545 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1546 // No-op if stack trace is disabled
1547 if (!StackTraceInThrowable) {
1548 return;
1549 }
1550
1551 // Disable stack traces for some preallocated out of memory errors
1552 if (!Universe::should_fill_in_stack_trace(throwable)) {
1553 return;
1554 }
1555
1556 PRESERVE_EXCEPTION_MARK;
1557
1558 JavaThread* thread = JavaThread::active();
1559 fill_in_stack_trace(throwable, method, thread);
1560 // ignore exceptions thrown during stack trace filling
1561 CLEAR_PENDING_EXCEPTION;
1562 }
1563
1564 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1565 // Allocate stack trace - backtrace is created but not filled in
1566
1567 // No-op if stack trace is disabled
1568 if (!StackTraceInThrowable) return;
1569
1570 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1571 objArrayHandle backtrace (THREAD, h_oop);
1572 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1573 objArrayHandle methods (THREAD, m_oop);
1574 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1575 typeArrayHandle bcis(THREAD, b);
1576
1577 // backtrace has space for one chunk (next is NULL)
1578 backtrace->obj_at_put(trace_methods_offset, methods());
1579 backtrace->obj_at_put(trace_bcis_offset, bcis());
1580 set_backtrace(throwable(), backtrace());
1581 }
1582
1583
1584 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1585 // Fill in stack trace into preallocated backtrace (no GC)
1586
1587 // No-op if stack trace is disabled
1588 if (!StackTraceInThrowable) return;
1589
1590 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1591
1592 oop backtrace = java_lang_Throwable::backtrace(throwable());
1593 assert(backtrace != NULL, "backtrace not preallocated");
1594
1595 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset);
1596 objArrayOop methods = objArrayOop(m);
1597 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1598
1599 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset);
1600 typeArrayOop bcis = typeArrayOop(b);
1601 assert(bcis != NULL, "bci array not preallocated");
1602
1603 assert(methods->length() == bcis->length(), "method and bci arrays should match");
1604
1605 JavaThread* thread = JavaThread::current();
1606 ResourceMark rm(thread);
1607 vframeStream st(thread);
1608
1609 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1610 // methods as preallocated errors aren't created by "java" code.
1611
1612 // fill in as much stack trace as possible
1613 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1614 int chunk_count = 0;
1615
1616 for (;!st.at_end(); st.next()) {
1617 // Add entry and smear the -1 bci to 0 since the array only holds
1618 // unsigned shorts. The later line number lookup would just smear
1619 // the -1 to a 0 even if it could be recorded.
1620 int bci = st.bci();
1621 if (bci == SynchronizationEntryBCI) bci = 0;
1622 assert(bci == (jushort)bci, "doesn't fit");
1623 bcis->ushort_at_put(chunk_count, bci);
1624 methods->obj_at_put(chunk_count, st.method());
1625
1626 chunk_count++;
1627
1628 // Bail-out for deep stacks
1629 if (chunk_count >= max_chunks) break;
1630 }
1631
1632 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1633 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1634 // can be removed in a JDK using this JVM version
1635 if (JDK_Version::is_gte_jdk17x_version()) {
1636 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1637 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1638 }
1639
1640 }
1641
1642
1643 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1644 if (throwable == NULL) {
1645 THROW_0(vmSymbols::java_lang_NullPointerException());
1646 }
1647 objArrayOop chunk = objArrayOop(backtrace(throwable));
1648 int depth = 0;
1649 if (chunk != NULL) {
1650 // Iterate over chunks and count full ones
1651 while (true) {
1652 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1653 if (next == NULL) break;
1654 depth += trace_chunk_size;
1655 chunk = next;
1656 }
1657 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1658 // Count element in remaining partial chunk
1659 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1660 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1661 assert(methods != NULL && bcis != NULL, "sanity check");
1662 for (int i = 0; i < methods->length(); i++) {
1663 if (methods->obj_at(i) == NULL) break;
1664 depth++;
1665 }
1666 }
1667 return depth;
1668 }
1669
1670
1671 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1672 if (throwable == NULL) {
1673 THROW_0(vmSymbols::java_lang_NullPointerException());
1674 }
1675 if (index < 0) {
1676 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1677 }
1678 // Compute how many chunks to skip and index into actual chunk
1679 objArrayOop chunk = objArrayOop(backtrace(throwable));
1680 int skip_chunks = index / trace_chunk_size;
1681 int chunk_index = index % trace_chunk_size;
1682 while (chunk != NULL && skip_chunks > 0) {
1683 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1684 skip_chunks--;
1685 }
1686 if (chunk == NULL) {
1687 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1688 }
1689 // Get method,bci from chunk
1690 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1691 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1692 assert(methods != NULL && bcis != NULL, "sanity check");
1693 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index)));
1694 int bci = bcis->ushort_at(chunk_index);
1695 // Chunk can be partial full
1696 if (method.is_null()) {
1697 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1698 }
1699
1700 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1701 return element;
1702 }
1703
1704 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1705 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1706 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1707
1708 // Allocate java.lang.StackTraceElement instance
1709 klassOop k = SystemDictionary::StackTraceElement_klass();
1710 assert(k != NULL, "must be loaded in 1.4+");
1711 instanceKlassHandle ik (THREAD, k);
1712 if (ik->should_be_initialized()) {
1713 ik->initialize(CHECK_0);
1714 }
1715
1716 Handle element = ik->allocate_instance_handle(CHECK_0);
1717 // Fill in class name
1718 ResourceMark rm(THREAD);
1719 const char* str = instanceKlass::cast(method->method_holder())->external_name();
1720 oop classname = StringTable::intern((char*) str, CHECK_0);
1721 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1722 // Fill in method name
1723 oop methodname = StringTable::intern(method->name(), CHECK_0);
1724 java_lang_StackTraceElement::set_methodName(element(), methodname);
1725 // Fill in source file name
1726 Symbol* source = instanceKlass::cast(method->method_holder())->source_file_name();
1727 oop filename = StringTable::intern(source, CHECK_0);
1728 java_lang_StackTraceElement::set_fileName(element(), filename);
1729 // File in source line number
1730 int line_number;
1731 if (method->is_native()) {
1732 // Negative value different from -1 below, enabling Java code in
1733 // class java.lang.StackTraceElement to distinguish "native" from
1734 // "no LineNumberTable".
1735 line_number = -2;
1736 } else {
1737 // Returns -1 if no LineNumberTable, and otherwise actual line number
1738 line_number = method->line_number_from_bci(bci);
1739 }
1740 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1741
1742 return element();
1743 }
1744
1745
1746 void java_lang_reflect_AccessibleObject::compute_offsets() {
1747 klassOop k = SystemDictionary::reflect_AccessibleObject_klass();
1748 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1749 }
1750
1751 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1752 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1753 return (jboolean) reflect->bool_field(override_offset);
1754 }
1755
1756 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1757 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1758 reflect->bool_field_put(override_offset, (int) value);
1759 }
1760
1761 void java_lang_reflect_Method::compute_offsets() {
1762 klassOop k = SystemDictionary::reflect_Method_klass();
1763 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1764 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1765 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1766 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1767 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1768 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1769 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1770 // The generic signature and annotations fields are only present in 1.5
1771 signature_offset = -1;
1772 annotations_offset = -1;
1773 parameter_annotations_offset = -1;
1774 annotation_default_offset = -1;
1775 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1776 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1777 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1778 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1779 }
1780
1781 Handle java_lang_reflect_Method::create(TRAPS) {
1782 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1783 klassOop klass = SystemDictionary::reflect_Method_klass();
1784 // This class is eagerly initialized during VM initialization, since we keep a refence
1785 // to one of the methods
1786 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized");
1787 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1788 }
1789
1790 oop java_lang_reflect_Method::clazz(oop reflect) {
1791 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1792 return reflect->obj_field(clazz_offset);
1793 }
1794
1795 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1796 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1797 reflect->obj_field_put(clazz_offset, value);
1798 }
1799
1800 int java_lang_reflect_Method::slot(oop reflect) {
1801 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1802 return reflect->int_field(slot_offset);
1803 }
1804
1805 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1806 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1807 reflect->int_field_put(slot_offset, value);
1808 }
1809
1810 oop java_lang_reflect_Method::name(oop method) {
1811 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1812 return method->obj_field(name_offset);
1813 }
1814
1815 void java_lang_reflect_Method::set_name(oop method, oop value) {
1816 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1817 method->obj_field_put(name_offset, value);
1818 }
1819
1820 oop java_lang_reflect_Method::return_type(oop method) {
1821 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1822 return method->obj_field(returnType_offset);
1823 }
1824
1825 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1826 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1827 method->obj_field_put(returnType_offset, value);
1828 }
1829
1830 oop java_lang_reflect_Method::parameter_types(oop method) {
1831 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1832 return method->obj_field(parameterTypes_offset);
1833 }
1834
1835 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1836 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1837 method->obj_field_put(parameterTypes_offset, value);
1838 }
1839
1840 oop java_lang_reflect_Method::exception_types(oop method) {
1841 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1842 return method->obj_field(exceptionTypes_offset);
1843 }
1844
1845 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1846 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1847 method->obj_field_put(exceptionTypes_offset, value);
1848 }
1849
1850 int java_lang_reflect_Method::modifiers(oop method) {
1851 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1852 return method->int_field(modifiers_offset);
1853 }
1854
1855 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1856 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1857 method->int_field_put(modifiers_offset, value);
1858 }
1859
1860 bool java_lang_reflect_Method::has_signature_field() {
1861 return (signature_offset >= 0);
1862 }
1863
1864 oop java_lang_reflect_Method::signature(oop method) {
1865 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1866 assert(has_signature_field(), "signature field must be present");
1867 return method->obj_field(signature_offset);
1868 }
1869
1870 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1871 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1872 assert(has_signature_field(), "signature field must be present");
1873 method->obj_field_put(signature_offset, value);
1874 }
1875
1876 bool java_lang_reflect_Method::has_annotations_field() {
1877 return (annotations_offset >= 0);
1878 }
1879
1880 oop java_lang_reflect_Method::annotations(oop method) {
1881 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1882 assert(has_annotations_field(), "annotations field must be present");
1883 return method->obj_field(annotations_offset);
1884 }
1885
1886 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1887 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1888 assert(has_annotations_field(), "annotations field must be present");
1889 method->obj_field_put(annotations_offset, value);
1890 }
1891
1892 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1893 return (parameter_annotations_offset >= 0);
1894 }
1895
1896 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1897 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1898 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1899 return method->obj_field(parameter_annotations_offset);
1900 }
1901
1902 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1903 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1904 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1905 method->obj_field_put(parameter_annotations_offset, value);
1906 }
1907
1908 bool java_lang_reflect_Method::has_annotation_default_field() {
1909 return (annotation_default_offset >= 0);
1910 }
1911
1912 oop java_lang_reflect_Method::annotation_default(oop method) {
1913 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1914 assert(has_annotation_default_field(), "annotation default field must be present");
1915 return method->obj_field(annotation_default_offset);
1916 }
1917
1918 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1919 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1920 assert(has_annotation_default_field(), "annotation default field must be present");
1921 method->obj_field_put(annotation_default_offset, value);
1922 }
1923
1924 void java_lang_reflect_Constructor::compute_offsets() {
1925 klassOop k = SystemDictionary::reflect_Constructor_klass();
1926 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1927 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1928 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1929 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1930 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1931 // The generic signature and annotations fields are only present in 1.5
1932 signature_offset = -1;
1933 annotations_offset = -1;
1934 parameter_annotations_offset = -1;
1935 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1936 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1937 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1938 }
1939
1940 Handle java_lang_reflect_Constructor::create(TRAPS) {
1941 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1942 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1943 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1944 instanceKlassHandle klass (THREAD, k);
1945 // Ensure it is initialized
1946 klass->initialize(CHECK_NH);
1947 return klass->allocate_instance_handle(CHECK_NH);
1948 }
1949
1950 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1951 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1952 return reflect->obj_field(clazz_offset);
1953 }
1954
1955 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1956 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1957 reflect->obj_field_put(clazz_offset, value);
1958 }
1959
1960 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1961 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1962 return constructor->obj_field(parameterTypes_offset);
1963 }
1964
1965 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
1966 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1967 constructor->obj_field_put(parameterTypes_offset, value);
1968 }
1969
1970 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
1971 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1972 return constructor->obj_field(exceptionTypes_offset);
1973 }
1974
1975 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
1976 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1977 constructor->obj_field_put(exceptionTypes_offset, value);
1978 }
1979
1980 int java_lang_reflect_Constructor::slot(oop reflect) {
1981 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1982 return reflect->int_field(slot_offset);
1983 }
1984
1985 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
1986 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1987 reflect->int_field_put(slot_offset, value);
1988 }
1989
1990 int java_lang_reflect_Constructor::modifiers(oop constructor) {
1991 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1992 return constructor->int_field(modifiers_offset);
1993 }
1994
1995 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
1996 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1997 constructor->int_field_put(modifiers_offset, value);
1998 }
1999
2000 bool java_lang_reflect_Constructor::has_signature_field() {
2001 return (signature_offset >= 0);
2002 }
2003
2004 oop java_lang_reflect_Constructor::signature(oop constructor) {
2005 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2006 assert(has_signature_field(), "signature field must be present");
2007 return constructor->obj_field(signature_offset);
2008 }
2009
2010 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2011 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2012 assert(has_signature_field(), "signature field must be present");
2013 constructor->obj_field_put(signature_offset, value);
2014 }
2015
2016 bool java_lang_reflect_Constructor::has_annotations_field() {
2017 return (annotations_offset >= 0);
2018 }
2019
2020 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2021 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2022 assert(has_annotations_field(), "annotations field must be present");
2023 return constructor->obj_field(annotations_offset);
2024 }
2025
2026 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2028 assert(has_annotations_field(), "annotations field must be present");
2029 constructor->obj_field_put(annotations_offset, value);
2030 }
2031
2032 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2033 return (parameter_annotations_offset >= 0);
2034 }
2035
2036 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2037 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2038 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2039 return method->obj_field(parameter_annotations_offset);
2040 }
2041
2042 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2043 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2044 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2045 method->obj_field_put(parameter_annotations_offset, value);
2046 }
2047
2048 void java_lang_reflect_Field::compute_offsets() {
2049 klassOop k = SystemDictionary::reflect_Field_klass();
2050 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2051 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2052 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2053 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2054 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2055 // The generic signature and annotations fields are only present in 1.5
2056 signature_offset = -1;
2057 annotations_offset = -1;
2058 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2059 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2060 }
2061
2062 Handle java_lang_reflect_Field::create(TRAPS) {
2063 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2064 Symbol* name = vmSymbols::java_lang_reflect_Field();
2065 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2066 instanceKlassHandle klass (THREAD, k);
2067 // Ensure it is initialized
2068 klass->initialize(CHECK_NH);
2069 return klass->allocate_instance_handle(CHECK_NH);
2070 }
2071
2072 oop java_lang_reflect_Field::clazz(oop reflect) {
2073 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2074 return reflect->obj_field(clazz_offset);
2075 }
2076
2077 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2078 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2079 reflect->obj_field_put(clazz_offset, value);
2080 }
2081
2082 oop java_lang_reflect_Field::name(oop field) {
2083 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2084 return field->obj_field(name_offset);
2085 }
2086
2087 void java_lang_reflect_Field::set_name(oop field, oop value) {
2088 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2089 field->obj_field_put(name_offset, value);
2090 }
2091
2092 oop java_lang_reflect_Field::type(oop field) {
2093 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2094 return field->obj_field(type_offset);
2095 }
2096
2097 void java_lang_reflect_Field::set_type(oop field, oop value) {
2098 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2099 field->obj_field_put(type_offset, value);
2100 }
2101
2102 int java_lang_reflect_Field::slot(oop reflect) {
2103 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2104 return reflect->int_field(slot_offset);
2105 }
2106
2107 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2108 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2109 reflect->int_field_put(slot_offset, value);
2110 }
2111
2112 int java_lang_reflect_Field::modifiers(oop field) {
2113 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2114 return field->int_field(modifiers_offset);
2115 }
2116
2117 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2118 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2119 field->int_field_put(modifiers_offset, value);
2120 }
2121
2122 bool java_lang_reflect_Field::has_signature_field() {
2123 return (signature_offset >= 0);
2124 }
2125
2126 oop java_lang_reflect_Field::signature(oop field) {
2127 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2128 assert(has_signature_field(), "signature field must be present");
2129 return field->obj_field(signature_offset);
2130 }
2131
2132 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2133 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2134 assert(has_signature_field(), "signature field must be present");
2135 field->obj_field_put(signature_offset, value);
2136 }
2137
2138 bool java_lang_reflect_Field::has_annotations_field() {
2139 return (annotations_offset >= 0);
2140 }
2141
2142 oop java_lang_reflect_Field::annotations(oop field) {
2143 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2144 assert(has_annotations_field(), "annotations field must be present");
2145 return field->obj_field(annotations_offset);
2146 }
2147
2148 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2149 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2150 assert(has_annotations_field(), "annotations field must be present");
2151 field->obj_field_put(annotations_offset, value);
2152 }
2153
2154
2155 void sun_reflect_ConstantPool::compute_offsets() {
2156 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2157 // This null test can be removed post beta
2158 if (k != NULL) {
2159 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature());
2160 }
2161 }
2162
2163
2164 Handle sun_reflect_ConstantPool::create(TRAPS) {
2165 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2166 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2167 instanceKlassHandle klass (THREAD, k);
2168 // Ensure it is initialized
2169 klass->initialize(CHECK_NH);
2170 return klass->allocate_instance_handle(CHECK_NH);
2171 }
2172
2173
2174 oop sun_reflect_ConstantPool::cp_oop(oop reflect) {
2175 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2176 return reflect->obj_field(_cp_oop_offset);
2177 }
2178
2179
2180 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) {
2181 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2182 reflect->obj_field_put(_cp_oop_offset, value);
2183 }
2184
2185 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2186 klassOop k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2187 // This null test can be removed post beta
2188 if (k != NULL) {
2189 compute_offset(_base_offset, k,
2190 vmSymbols::base_name(), vmSymbols::object_signature());
2191 }
2192 }
2193
2194 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2195 klassOop k = SystemDictionary::box_klass(type);
2196 if (k == NULL) return NULL;
2197 instanceKlassHandle h (THREAD, k);
2198 if (!h->is_initialized()) h->initialize(CHECK_0);
2199 return h->allocate_instance(THREAD);
2200 }
2201
2202
2203 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2204 oop box = initialize_and_allocate(type, CHECK_0);
2205 if (box == NULL) return NULL;
2206 switch (type) {
2207 case T_BOOLEAN:
2208 box->bool_field_put(value_offset, value->z);
2209 break;
2210 case T_CHAR:
2211 box->char_field_put(value_offset, value->c);
2212 break;
2213 case T_FLOAT:
2214 box->float_field_put(value_offset, value->f);
2215 break;
2216 case T_DOUBLE:
2217 box->double_field_put(long_value_offset, value->d);
2218 break;
2219 case T_BYTE:
2220 box->byte_field_put(value_offset, value->b);
2221 break;
2222 case T_SHORT:
2223 box->short_field_put(value_offset, value->s);
2224 break;
2225 case T_INT:
2226 box->int_field_put(value_offset, value->i);
2227 break;
2228 case T_LONG:
2229 box->long_field_put(long_value_offset, value->j);
2230 break;
2231 default:
2232 return NULL;
2233 }
2234 return box;
2235 }
2236
2237
2238 BasicType java_lang_boxing_object::basic_type(oop box) {
2239 if (box == NULL) return T_ILLEGAL;
2240 BasicType type = SystemDictionary::box_klass_type(box->klass());
2241 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2242 return T_ILLEGAL;
2243 return type;
2244 }
2245
2246
2247 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2248 BasicType type = SystemDictionary::box_klass_type(box->klass());
2249 switch (type) {
2250 case T_BOOLEAN:
2251 value->z = box->bool_field(value_offset);
2252 break;
2253 case T_CHAR:
2254 value->c = box->char_field(value_offset);
2255 break;
2256 case T_FLOAT:
2257 value->f = box->float_field(value_offset);
2258 break;
2259 case T_DOUBLE:
2260 value->d = box->double_field(long_value_offset);
2261 break;
2262 case T_BYTE:
2263 value->b = box->byte_field(value_offset);
2264 break;
2265 case T_SHORT:
2266 value->s = box->short_field(value_offset);
2267 break;
2268 case T_INT:
2269 value->i = box->int_field(value_offset);
2270 break;
2271 case T_LONG:
2272 value->j = box->long_field(long_value_offset);
2273 break;
2274 default:
2275 return T_ILLEGAL;
2276 } // end switch
2277 return type;
2278 }
2279
2280
2281 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2282 BasicType type = SystemDictionary::box_klass_type(box->klass());
2283 switch (type) {
2284 case T_BOOLEAN:
2285 box->bool_field_put(value_offset, value->z);
2286 break;
2287 case T_CHAR:
2288 box->char_field_put(value_offset, value->c);
2289 break;
2290 case T_FLOAT:
2291 box->float_field_put(value_offset, value->f);
2292 break;
2293 case T_DOUBLE:
2294 box->double_field_put(long_value_offset, value->d);
2295 break;
2296 case T_BYTE:
2297 box->byte_field_put(value_offset, value->b);
2298 break;
2299 case T_SHORT:
2300 box->short_field_put(value_offset, value->s);
2301 break;
2302 case T_INT:
2303 box->int_field_put(value_offset, value->i);
2304 break;
2305 case T_LONG:
2306 box->long_field_put(long_value_offset, value->j);
2307 break;
2308 default:
2309 return T_ILLEGAL;
2310 } // end switch
2311 return type;
2312 }
2313
2314
2315 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2316 switch (type) {
2317 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2318 case T_CHAR: st->print("%d", value->c); break;
2319 case T_BYTE: st->print("%d", value->b); break;
2320 case T_SHORT: st->print("%d", value->s); break;
2321 case T_INT: st->print("%d", value->i); break;
2322 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2323 case T_FLOAT: st->print("%f", value->f); break;
2324 case T_DOUBLE: st->print("%lf", value->d); break;
2325 default: st->print("type %d?", type); break;
2326 }
2327 }
2328
2329
2330 // Support for java_lang_ref_Reference
2331 oop java_lang_ref_Reference::pending_list_lock() {
2332 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2333 address addr = ik->static_field_addr(static_lock_offset);
2334 if (UseCompressedOops) {
2335 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2336 } else {
2337 return oopDesc::load_decode_heap_oop((oop*)addr);
2338 }
2339 }
2340
2341 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2342 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2343 address addr = ik->static_field_addr(static_pending_offset);
2344 // XXX This might not be HeapWord aligned, almost rather be char *.
2345 return (HeapWord*)addr;
2346 }
2347
2348 oop java_lang_ref_Reference::pending_list() {
2349 char *addr = (char *)pending_list_addr();
2350 if (UseCompressedOops) {
2351 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2352 } else {
2353 return oopDesc::load_decode_heap_oop((oop*)addr);
2354 }
2355 }
2356
2357
2358 // Support for java_lang_ref_SoftReference
2359
2360 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2361 return ref->long_field(timestamp_offset);
2362 }
2363
2364 jlong java_lang_ref_SoftReference::clock() {
2365 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2366 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2367 return *offset;
2368 }
2369
2370 void java_lang_ref_SoftReference::set_clock(jlong value) {
2371 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2372 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2373 *offset = value;
2374 }
2375
2376
2377 // Support for java_lang_invoke_MethodHandle
2378
2379 int java_lang_invoke_MethodHandle::_type_offset;
2380 int java_lang_invoke_MethodHandle::_vmtarget_offset;
2381 int java_lang_invoke_MethodHandle::_vmentry_offset;
2382
2383 int java_lang_invoke_MemberName::_clazz_offset;
2384 int java_lang_invoke_MemberName::_name_offset;
2385 int java_lang_invoke_MemberName::_type_offset;
2386 int java_lang_invoke_MemberName::_flags_offset;
2387 int java_lang_invoke_MemberName::_vmtarget_offset;
2388 int java_lang_invoke_MemberName::_vmindex_offset;
2389
2390 int java_lang_invoke_DirectMethodHandle::_vmindex_offset;
2391
2392 int java_lang_invoke_BoundMethodHandle::_argument_offset;
2393 int java_lang_invoke_BoundMethodHandle::_vmargslot_offset;
2394
2395 int java_lang_invoke_AdapterMethodHandle::_conversion_offset;
2396
2397 int java_lang_invoke_CountingMethodHandle::_vmcount_offset;
2398
2399 void java_lang_invoke_MethodHandle::compute_offsets() {
2400 klassOop klass_oop = SystemDictionary::MethodHandle_klass();
2401 if (klass_oop != NULL && EnableInvokeDynamic) {
2402 bool allow_super = false;
2403 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature(), allow_super);
2404 METHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2405 }
2406 }
2407
2408 void java_lang_invoke_MemberName::compute_offsets() {
2409 klassOop klass_oop = SystemDictionary::MemberName_klass();
2410 if (klass_oop != NULL && EnableInvokeDynamic) {
2411 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2412 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2413 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2414 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2415 compute_offset(_vmindex_offset, klass_oop, vmSymbols::vmindex_name(), vmSymbols::int_signature());
2416 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2417 }
2418 }
2419
2420 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2421 klassOop k = SystemDictionary::DirectMethodHandle_klass();
2422 if (k != NULL && EnableInvokeDynamic) {
2423 DIRECTMETHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2424 }
2425 }
2426
2427 void java_lang_invoke_BoundMethodHandle::compute_offsets() {
2428 klassOop k = SystemDictionary::BoundMethodHandle_klass();
2429 if (k != NULL && EnableInvokeDynamic) {
2430 compute_offset(_vmargslot_offset, k, vmSymbols::vmargslot_name(), vmSymbols::int_signature(), true);
2431 compute_offset(_argument_offset, k, vmSymbols::argument_name(), vmSymbols::object_signature(), true);
2432 }
2433 }
2434
2435 void java_lang_invoke_AdapterMethodHandle::compute_offsets() {
2436 klassOop k = SystemDictionary::AdapterMethodHandle_klass();
2437 if (k != NULL && EnableInvokeDynamic) {
2438 compute_offset(_conversion_offset, k, vmSymbols::conversion_name(), vmSymbols::int_signature(), true);
2439 }
2440 }
2441
2442 void java_lang_invoke_CountingMethodHandle::compute_offsets() {
2443 klassOop k = SystemDictionary::CountingMethodHandle_klass();
2444 if (k != NULL && EnableInvokeDynamic) {
2445 compute_offset(_vmcount_offset, k, vmSymbols::vmcount_name(), vmSymbols::int_signature(), true);
2446 }
2447 }
2448
2449 int java_lang_invoke_CountingMethodHandle::vmcount(oop mh) {
2450 assert(is_instance(mh), "CMH only");
2451 return mh->int_field(_vmcount_offset);
2452 }
2453
2454 void java_lang_invoke_CountingMethodHandle::set_vmcount(oop mh, int count) {
2455 assert(is_instance(mh), "CMH only");
2456 mh->int_field_put(_vmcount_offset, count);
2457 }
2458
2459 oop java_lang_invoke_MethodHandle::type(oop mh) {
2460 return mh->obj_field(_type_offset);
2461 }
2462
2463 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2464 mh->obj_field_put(_type_offset, mtype);
2465 }
2466
2467 // fetch type.form.vmslots, which is the number of JVM stack slots
2468 // required to carry the arguments of this MH
2469 int java_lang_invoke_MethodHandle::vmslots(oop mh) {
2470 oop mtype = type(mh);
2471 if (mtype == NULL) return 0; // Java code would get NPE
2472 oop form = java_lang_invoke_MethodType::form(mtype);
2473 if (form == NULL) return 0; // Java code would get NPE
2474 return java_lang_invoke_MethodTypeForm::vmslots(form);
2475 }
2476
2477 // fetch the low-level entry point for this mh
2478 MethodHandleEntry* java_lang_invoke_MethodHandle::vmentry(oop mh) {
2479 return (MethodHandleEntry*) mh->address_field(_vmentry_offset);
2480 }
2481
2482 void java_lang_invoke_MethodHandle::set_vmentry(oop mh, MethodHandleEntry* me) {
2483 assert(_vmentry_offset != 0, "must be present");
2484
2485 // This is always the final step that initializes a valid method handle:
2486 mh->release_address_field_put(_vmentry_offset, (address) me);
2487
2488 // There should be enough memory barriers on exit from native methods
2489 // to ensure that the MH is fully initialized to all threads before
2490 // Java code can publish it in global data structures.
2491 // But just in case, we use release_address_field_put.
2492 }
2493
2494 /// MemberName accessors
2495
2496 oop java_lang_invoke_MemberName::clazz(oop mname) {
2497 assert(is_instance(mname), "wrong type");
2498 return mname->obj_field(_clazz_offset);
2499 }
2500
2501 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2502 assert(is_instance(mname), "wrong type");
2503 mname->obj_field_put(_clazz_offset, clazz);
2504 }
2505
2506 oop java_lang_invoke_MemberName::name(oop mname) {
2507 assert(is_instance(mname), "wrong type");
2508 return mname->obj_field(_name_offset);
2509 }
2510
2511 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2512 assert(is_instance(mname), "wrong type");
2513 mname->obj_field_put(_name_offset, name);
2514 }
2515
2516 oop java_lang_invoke_MemberName::type(oop mname) {
2517 assert(is_instance(mname), "wrong type");
2518 return mname->obj_field(_type_offset);
2519 }
2520
2521 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2522 assert(is_instance(mname), "wrong type");
2523 mname->obj_field_put(_type_offset, type);
2524 }
2525
2526 int java_lang_invoke_MemberName::flags(oop mname) {
2527 assert(is_instance(mname), "wrong type");
2528 return mname->int_field(_flags_offset);
2529 }
2530
2531 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2532 assert(is_instance(mname), "wrong type");
2533 mname->int_field_put(_flags_offset, flags);
2534 }
2535
2536 oop java_lang_invoke_MemberName::vmtarget(oop mname) {
2537 assert(is_instance(mname), "wrong type");
2538 return mname->obj_field(_vmtarget_offset);
2539 }
2540
2541 void java_lang_invoke_MemberName::set_vmtarget(oop mname, oop ref) {
2542 assert(is_instance(mname), "wrong type");
2543 mname->obj_field_put(_vmtarget_offset, ref);
2544 }
2545
2546 int java_lang_invoke_MemberName::vmindex(oop mname) {
2547 assert(is_instance(mname), "wrong type");
2548 return mname->int_field(_vmindex_offset);
2549 }
2550
2551 void java_lang_invoke_MemberName::set_vmindex(oop mname, int index) {
2552 assert(is_instance(mname), "wrong type");
2553 mname->int_field_put(_vmindex_offset, index);
2554 }
2555
2556 oop java_lang_invoke_MethodHandle::vmtarget(oop mh) {
2557 assert(is_instance(mh), "MH only");
2558 return mh->obj_field(_vmtarget_offset);
2559 }
2560
2561 void java_lang_invoke_MethodHandle::set_vmtarget(oop mh, oop ref) {
2562 assert(is_instance(mh), "MH only");
2563 mh->obj_field_put(_vmtarget_offset, ref);
2564 }
2565
2566 int java_lang_invoke_DirectMethodHandle::vmindex(oop mh) {
2567 assert(is_instance(mh), "DMH only");
2568 return mh->int_field(_vmindex_offset);
2569 }
2570
2571 void java_lang_invoke_DirectMethodHandle::set_vmindex(oop mh, int index) {
2572 assert(is_instance(mh), "DMH only");
2573 mh->int_field_put(_vmindex_offset, index);
2574 }
2575
2576 int java_lang_invoke_BoundMethodHandle::vmargslot(oop mh) {
2577 assert(is_instance(mh), "BMH only");
2578 return mh->int_field(_vmargslot_offset);
2579 }
2580
2581 oop java_lang_invoke_BoundMethodHandle::argument(oop mh) {
2582 assert(is_instance(mh), "BMH only");
2583 return mh->obj_field(_argument_offset);
2584 }
2585
2586 int java_lang_invoke_AdapterMethodHandle::conversion(oop mh) {
2587 assert(is_instance(mh), "AMH only");
2588 return mh->int_field(_conversion_offset);
2589 }
2590
2591 void java_lang_invoke_AdapterMethodHandle::set_conversion(oop mh, int conv) {
2592 assert(is_instance(mh), "AMH only");
2593 mh->int_field_put(_conversion_offset, conv);
2594 }
2595
2596
2597 // Support for java_lang_invoke_MethodType
2598
2599 int java_lang_invoke_MethodType::_rtype_offset;
2600 int java_lang_invoke_MethodType::_ptypes_offset;
2601 int java_lang_invoke_MethodType::_form_offset;
2602
2603 void java_lang_invoke_MethodType::compute_offsets() {
2604 klassOop k = SystemDictionary::MethodType_klass();
2605 if (k != NULL) {
2606 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2607 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2608 compute_offset(_form_offset, k, vmSymbols::form_name(), vmSymbols::java_lang_invoke_MethodTypeForm_signature());
2609 }
2610 }
2611
2612 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2613 st->print("(");
2614 objArrayOop pts = ptypes(mt);
2615 for (int i = 0, limit = pts->length(); i < limit; i++) {
2616 java_lang_Class::print_signature(pts->obj_at(i), st);
2617 }
2618 st->print(")");
2619 java_lang_Class::print_signature(rtype(mt), st);
2620 }
2621
2622 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2623 ResourceMark rm;
2624 stringStream buffer(128);
2625 print_signature(mt, &buffer);
2626 const char* sigstr = buffer.base();
2627 int siglen = (int) buffer.size();
2628 Symbol *name;
2629 if (!intern_if_not_found) {
2630 name = SymbolTable::probe(sigstr, siglen);
2631 } else {
2632 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2633 }
2634 return name;
2635 }
2636
2637 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2638 if (rtype(mt1) != rtype(mt2))
2639 return false;
2640 if (ptype_count(mt1) != ptype_count(mt2))
2641 return false;
2642 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2643 if (ptype(mt1, i) != ptype(mt2, i))
2644 return false;
2645 }
2646 return true;
2647 }
2648
2649 oop java_lang_invoke_MethodType::rtype(oop mt) {
2650 assert(is_instance(mt), "must be a MethodType");
2651 return mt->obj_field(_rtype_offset);
2652 }
2653
2654 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2655 assert(is_instance(mt), "must be a MethodType");
2656 return (objArrayOop) mt->obj_field(_ptypes_offset);
2657 }
2658
2659 oop java_lang_invoke_MethodType::form(oop mt) {
2660 assert(is_instance(mt), "must be a MethodType");
2661 return mt->obj_field(_form_offset);
2662 }
2663
2664 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2665 return ptypes(mt)->obj_at(idx);
2666 }
2667
2668 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2669 return ptypes(mt)->length();
2670 }
2671
2672
2673
2674 // Support for java_lang_invoke_MethodTypeForm
2675
2676 int java_lang_invoke_MethodTypeForm::_vmslots_offset;
2677 int java_lang_invoke_MethodTypeForm::_vmlayout_offset;
2678 int java_lang_invoke_MethodTypeForm::_erasedType_offset;
2679 int java_lang_invoke_MethodTypeForm::_genericInvoker_offset;
2680
2681 void java_lang_invoke_MethodTypeForm::compute_offsets() {
2682 klassOop k = SystemDictionary::MethodTypeForm_klass();
2683 if (k != NULL) {
2684 compute_optional_offset(_vmslots_offset, k, vmSymbols::vmslots_name(), vmSymbols::int_signature(), true);
2685 compute_optional_offset(_vmlayout_offset, k, vmSymbols::vmlayout_name(), vmSymbols::object_signature());
2686 compute_optional_offset(_erasedType_offset, k, vmSymbols::erasedType_name(), vmSymbols::java_lang_invoke_MethodType_signature(), true);
2687 compute_optional_offset(_genericInvoker_offset, k, vmSymbols::genericInvoker_name(), vmSymbols::java_lang_invoke_MethodHandle_signature(), true);
2688 if (_genericInvoker_offset == 0) _genericInvoker_offset = -1; // set to explicit "empty" value
2689 METHODTYPEFORM_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2690 }
2691 }
2692
2693 int java_lang_invoke_MethodTypeForm::vmslots(oop mtform) {
2694 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2695 assert(_vmslots_offset > 0, "");
2696 return mtform->int_field(_vmslots_offset);
2697 }
2698
2699 oop java_lang_invoke_MethodTypeForm::vmlayout(oop mtform) {
2700 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2701 assert(_vmlayout_offset > 0, "");
2702 return mtform->obj_field(_vmlayout_offset);
2703 }
2704
2705 oop java_lang_invoke_MethodTypeForm::init_vmlayout(oop mtform, oop cookie) {
2706 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2707 oop previous = vmlayout(mtform);
2708 if (previous != NULL) {
2709 return previous; // someone else beat us to it
2710 }
2711 HeapWord* cookie_addr = (HeapWord*) mtform->obj_field_addr<oop>(_vmlayout_offset);
2712 OrderAccess::storestore(); // make sure our copy is fully committed
2713 previous = oopDesc::atomic_compare_exchange_oop(cookie, cookie_addr, previous);
2714 if (previous != NULL) {
2715 return previous; // someone else beat us to it
2716 }
2717 return cookie;
2718 }
2719
2720 oop java_lang_invoke_MethodTypeForm::erasedType(oop mtform) {
2721 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2722 return mtform->obj_field(_erasedType_offset);
2723 }
2724
2725 oop java_lang_invoke_MethodTypeForm::genericInvoker(oop mtform) {
2726 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2727 return mtform->obj_field(_genericInvoker_offset);
2728 }
2729
2730
2731 // Support for java_lang_invoke_CallSite
2732
2733 int java_lang_invoke_CallSite::_target_offset;
2734
2735 void java_lang_invoke_CallSite::compute_offsets() {
2736 if (!EnableInvokeDynamic) return;
2737 klassOop k = SystemDictionary::CallSite_klass();
2738 if (k != NULL) {
2739 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2740 }
2741
2742 // Disallow compilation of CallSite.setTargetNormal and CallSite.setTargetVolatile
2743 // (For C2: keep this until we have throttling logic for uncommon traps.)
2744 if (k != NULL) {
2745 instanceKlass* ik = instanceKlass::cast(k);
2746 methodOop m_normal = ik->lookup_method(vmSymbols::setTargetNormal_name(), vmSymbols::setTarget_signature());
2747 methodOop m_volatile = ik->lookup_method(vmSymbols::setTargetVolatile_name(), vmSymbols::setTarget_signature());
2748 guarantee(m_normal != NULL && m_volatile != NULL, "must exist");
2749 m_normal->set_not_compilable_quietly();
2750 m_volatile->set_not_compilable_quietly();
2751 }
2752 }
2753
2754
2755 // Support for java_security_AccessControlContext
2756
2757 int java_security_AccessControlContext::_context_offset = 0;
2758 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2759 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2760
2761 void java_security_AccessControlContext::compute_offsets() {
2762 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2763 fieldDescriptor fd;
2764 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2765
2766 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2767 fatal("Invalid layout of java.security.AccessControlContext");
2768 }
2769 _context_offset = fd.offset();
2770
2771 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2772 fatal("Invalid layout of java.security.AccessControlContext");
2773 }
2774 _privilegedContext_offset = fd.offset();
2775
2776 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2777 fatal("Invalid layout of java.security.AccessControlContext");
2778 }
2779 _isPrivileged_offset = fd.offset();
2780 }
2781
2782
2783 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2784 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2785 // Ensure klass is initialized
2786 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2787 // Allocate result
2788 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2789 // Fill in values
2790 result->obj_field_put(_context_offset, context());
2791 result->obj_field_put(_privilegedContext_offset, privileged_context());
2792 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2793 return result;
2794 }
2795
2796
2797 // Support for java_lang_ClassLoader
2798 bool java_lang_ClassLoader::offsets_computed = false;
2799 int java_lang_ClassLoader::parallelCapable_offset = -1;
2800
2801 void java_lang_ClassLoader::compute_offsets() {
2802 assert(!offsets_computed, "offsets should be initialized only once");
2803 offsets_computed = true;
2804
2805 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2806 klassOop k1 = SystemDictionary::ClassLoader_klass();
2807 compute_optional_offset(parallelCapable_offset,
2808 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2809 }
2810
2811 oop java_lang_ClassLoader::parent(oop loader) {
2812 assert(loader->is_oop(), "loader must be oop");
2813 return loader->obj_field(parent_offset);
2814 }
2815
2816
2817 // For class loader classes, parallelCapable defined
2818 // based on non-null field
2819 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2820 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2821 if (!JDK_Version::is_gte_jdk17x_version()
2822 || parallelCapable_offset == -1) {
2823 // Default for backward compatibility is false
2824 return false;
2825 }
2826 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2827 }
2828
2829 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2830 // Fix for 4474172; see evaluation for more details
2831 loader = non_reflection_class_loader(loader);
2832
2833 oop cl = SystemDictionary::java_system_loader();
2834 while(cl != NULL) {
2835 if (cl == loader) return true;
2836 cl = parent(cl);
2837 }
2838 return false;
2839 }
2840
2841 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2842 if (loader != NULL) {
2843 // See whether this is one of the class loaders associated with
2844 // the generated bytecodes for reflection, and if so, "magically"
2845 // delegate to its parent to prevent class loading from occurring
2846 // in places where applications using reflection didn't expect it.
2847 klassOop delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2848 // This might be null in non-1.4 JDKs
2849 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2850 return parent(loader);
2851 }
2852 }
2853 return loader;
2854 }
2855
2856
2857 // Support for java_lang_System
2858 int java_lang_System::in_offset_in_bytes() {
2859 return (instanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2860 }
2861
2862
2863 int java_lang_System::out_offset_in_bytes() {
2864 return (instanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2865 }
2866
2867
2868 int java_lang_System::err_offset_in_bytes() {
2869 return (instanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2870 }
2871
2872
2873
2874 int java_lang_Class::_klass_offset;
2875 int java_lang_Class::_array_klass_offset;
2876 int java_lang_Class::_resolved_constructor_offset;
2877 int java_lang_Class::_oop_size_offset;
2878 int java_lang_Class::_static_oop_field_count_offset;
2879 int java_lang_Throwable::backtrace_offset;
2880 int java_lang_Throwable::detailMessage_offset;
2881 int java_lang_Throwable::cause_offset;
2882 int java_lang_Throwable::stackTrace_offset;
2883 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2884 int java_lang_reflect_AccessibleObject::override_offset;
2885 int java_lang_reflect_Method::clazz_offset;
2886 int java_lang_reflect_Method::name_offset;
2887 int java_lang_reflect_Method::returnType_offset;
2888 int java_lang_reflect_Method::parameterTypes_offset;
2889 int java_lang_reflect_Method::exceptionTypes_offset;
2890 int java_lang_reflect_Method::slot_offset;
2891 int java_lang_reflect_Method::modifiers_offset;
2892 int java_lang_reflect_Method::signature_offset;
2893 int java_lang_reflect_Method::annotations_offset;
2894 int java_lang_reflect_Method::parameter_annotations_offset;
2895 int java_lang_reflect_Method::annotation_default_offset;
2896 int java_lang_reflect_Constructor::clazz_offset;
2897 int java_lang_reflect_Constructor::parameterTypes_offset;
2898 int java_lang_reflect_Constructor::exceptionTypes_offset;
2899 int java_lang_reflect_Constructor::slot_offset;
2900 int java_lang_reflect_Constructor::modifiers_offset;
2901 int java_lang_reflect_Constructor::signature_offset;
2902 int java_lang_reflect_Constructor::annotations_offset;
2903 int java_lang_reflect_Constructor::parameter_annotations_offset;
2904 int java_lang_reflect_Field::clazz_offset;
2905 int java_lang_reflect_Field::name_offset;
2906 int java_lang_reflect_Field::type_offset;
2907 int java_lang_reflect_Field::slot_offset;
2908 int java_lang_reflect_Field::modifiers_offset;
2909 int java_lang_reflect_Field::signature_offset;
2910 int java_lang_reflect_Field::annotations_offset;
2911 int java_lang_boxing_object::value_offset;
2912 int java_lang_boxing_object::long_value_offset;
2913 int java_lang_ref_Reference::referent_offset;
2914 int java_lang_ref_Reference::queue_offset;
2915 int java_lang_ref_Reference::next_offset;
2916 int java_lang_ref_Reference::discovered_offset;
2917 int java_lang_ref_Reference::static_lock_offset;
2918 int java_lang_ref_Reference::static_pending_offset;
2919 int java_lang_ref_Reference::number_of_fake_oop_fields;
2920 int java_lang_ref_SoftReference::timestamp_offset;
2921 int java_lang_ref_SoftReference::static_clock_offset;
2922 int java_lang_ClassLoader::parent_offset;
2923 int java_lang_System::static_in_offset;
2924 int java_lang_System::static_out_offset;
2925 int java_lang_System::static_err_offset;
2926 int java_lang_StackTraceElement::declaringClass_offset;
2927 int java_lang_StackTraceElement::methodName_offset;
2928 int java_lang_StackTraceElement::fileName_offset;
2929 int java_lang_StackTraceElement::lineNumber_offset;
2930 int java_lang_AssertionStatusDirectives::classes_offset;
2931 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2932 int java_lang_AssertionStatusDirectives::packages_offset;
2933 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2934 int java_lang_AssertionStatusDirectives::deflt_offset;
2935 int java_nio_Buffer::_limit_offset;
2936 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2937 int sun_reflect_ConstantPool::_cp_oop_offset;
2938 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2939
2940
2941 // Support for java_lang_StackTraceElement
2942
2943 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2944 element->obj_field_put(fileName_offset, value);
2945 }
2946
2947 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2948 element->obj_field_put(declaringClass_offset, value);
2949 }
2950
2951 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2952 element->obj_field_put(methodName_offset, value);
2953 }
2954
2955 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2956 element->int_field_put(lineNumber_offset, value);
2957 }
2958
2959
2960 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2961
2962 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2963 o->obj_field_put(classes_offset, val);
2964 }
2965
2966 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2967 o->obj_field_put(classEnabled_offset, val);
2968 }
2969
2970 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2971 o->obj_field_put(packages_offset, val);
2972 }
2973
2974 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2975 o->obj_field_put(packageEnabled_offset, val);
2976 }
2977
2978 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2979 o->bool_field_put(deflt_offset, val);
2980 }
2981
2982
2983 // Support for intrinsification of java.nio.Buffer.checkIndex
2984 int java_nio_Buffer::limit_offset() {
2985 return _limit_offset;
2986 }
2987
2988
2989 void java_nio_Buffer::compute_offsets() {
2990 klassOop k = SystemDictionary::nio_Buffer_klass();
2991 assert(k != NULL, "must be loaded in 1.4+");
2992 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2993 }
2994
2995 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2996 if (_owner_offset != 0) return;
2997
2998 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
2999 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3000 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass();
3001 compute_offset(_owner_offset, k,
3002 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3003 }
3004
3005 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3006 assert(_owner_offset != 0, "Must be initialized");
3007 return obj->obj_field(_owner_offset);
3008 }
3009
3010 // Compute hard-coded offsets
3011 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3012 // are not available to determine the offset_of_static_fields.
3013 void JavaClasses::compute_hard_coded_offsets() {
3014 const int x = heapOopSize;
3015 const int header = instanceOopDesc::base_offset_in_bytes();
3016
3017 // Throwable Class
3018 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3019 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3020 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3021 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3022 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3023
3024 // java_lang_boxing_object
3025 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3026 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3027
3028 // java_lang_ref_Reference:
3029 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3030 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3031 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3032 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3033 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3034 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3035 // Artificial fields for java_lang_ref_Reference
3036 // The first field is for the discovered field added in 1.4
3037 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3038
3039 // java_lang_ref_SoftReference Class
3040 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3041 // Don't multiply static fields because they are always in wordSize units
3042 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3043
3044 // java_lang_ClassLoader
3045 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3046
3047 // java_lang_System
3048 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3049 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3050 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3051
3052 // java_lang_StackTraceElement
3053 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3054 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3055 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3056 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3057 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3058 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3059 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3060 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3061 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3062
3063 }
3064
3065
3066 // Compute non-hard-coded field offsets of all the classes in this file
3067 void JavaClasses::compute_offsets() {
3068 // java_lang_Class::compute_offsets was called earlier in bootstrap
3069 java_lang_ClassLoader::compute_offsets();
3070 java_lang_Thread::compute_offsets();
3071 java_lang_ThreadGroup::compute_offsets();
3072 if (EnableInvokeDynamic) {
3073 java_lang_invoke_MethodHandle::compute_offsets();
3074 java_lang_invoke_MemberName::compute_offsets();
3075 java_lang_invoke_DirectMethodHandle::compute_offsets();
3076 java_lang_invoke_BoundMethodHandle::compute_offsets();
3077 java_lang_invoke_AdapterMethodHandle::compute_offsets();
3078 java_lang_invoke_MethodType::compute_offsets();
3079 java_lang_invoke_MethodTypeForm::compute_offsets();
3080 java_lang_invoke_CallSite::compute_offsets();
3081 java_lang_invoke_CountingMethodHandle::compute_offsets();
3082 }
3083 java_security_AccessControlContext::compute_offsets();
3084 // Initialize reflection classes. The layouts of these classes
3085 // changed with the new reflection implementation in JDK 1.4, and
3086 // since the Universe doesn't know what JDK version it is until this
3087 // point we defer computation of these offsets until now.
3088 java_lang_reflect_AccessibleObject::compute_offsets();
3089 java_lang_reflect_Method::compute_offsets();
3090 java_lang_reflect_Constructor::compute_offsets();
3091 java_lang_reflect_Field::compute_offsets();
3092 if (JDK_Version::is_gte_jdk14x_version()) {
3093 java_nio_Buffer::compute_offsets();
3094 }
3095 if (JDK_Version::is_gte_jdk15x_version()) {
3096 sun_reflect_ConstantPool::compute_offsets();
3097 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3098 }
3099
3100 // generated interpreter code wants to know about the offsets we just computed:
3101 AbstractAssembler::update_delayed_values();
3102 }
3103
3104 #ifndef PRODUCT
3105
3106 // These functions exist to assert the validity of hard-coded field offsets to guard
3107 // against changes in the class files
3108
3109 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3110 EXCEPTION_MARK;
3111 fieldDescriptor fd;
3112 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3113 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3114 instanceKlassHandle h_klass (THREAD, k);
3115 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3116 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3117 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3118 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3119 return false;
3120 }
3121 if (fd.is_static()) {
3122 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3123 return false;
3124 }
3125 if (fd.offset() == hardcoded_offset ) {
3126 return true;
3127 } else {
3128 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3129 klass_name, field_name, hardcoded_offset, fd.offset());
3130 return false;
3131 }
3132 }
3133
3134
3135 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3136 EXCEPTION_MARK;
3137 fieldDescriptor fd;
3138 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3139 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3140 instanceKlassHandle h_klass (THREAD, k);
3141 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3142 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3143 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3144 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3145 return false;
3146 }
3147 if (!fd.is_static()) {
3148 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3149 return false;
3150 }
3151 if (fd.offset() == hardcoded_offset + instanceMirrorKlass::offset_of_static_fields()) {
3152 return true;
3153 } else {
3154 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());
3155 return false;
3156 }
3157 }
3158
3159
3160 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3161 EXCEPTION_MARK;
3162 fieldDescriptor fd;
3163 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3164 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3165 instanceKlassHandle h_klass (THREAD, k);
3166 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3167 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3168 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3169 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3170 return false;
3171 }
3172 if (!fd.is_static() || !fd.has_initial_value()) {
3173 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3174 return false;
3175 }
3176 if (!fd.initial_value_tag().is_int()) {
3177 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3178 return false;
3179 }
3180 jint field_value = fd.int_initial_value();
3181 if (field_value == hardcoded_constant) {
3182 return true;
3183 } else {
3184 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);
3185 return false;
3186 }
3187 }
3188
3189
3190 // Check the hard-coded field offsets of all the classes in this file
3191
3192 void JavaClasses::check_offsets() {
3193 bool valid = true;
3194
3195 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3196 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3197
3198 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3199 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3200
3201 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3202 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3203
3204 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3205 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3206
3207 // java.lang.String
3208
3209 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3210 if (java_lang_String::has_offset_field()) {
3211 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3212 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3213 }
3214 if (java_lang_String::has_hash_field()) {
3215 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3216 }
3217
3218 // java.lang.Class
3219
3220 // Fake fields
3221 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3222 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3223 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3224
3225 // java.lang.Throwable
3226
3227 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3228 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3229 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3230 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3231
3232 // Boxed primitive objects (java_lang_boxing_object)
3233
3234 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3235 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3236 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3237 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3238 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3239 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3240 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3241 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3242
3243 // java.lang.ClassLoader
3244
3245 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3246
3247 // java.lang.System
3248
3249 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3250 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3251 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3252
3253 // java.lang.StackTraceElement
3254
3255 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3256 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3257 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3258 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3259
3260 // java.lang.ref.Reference
3261
3262 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3263 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3264 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3265 // Fake field
3266 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3267 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3268 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3269
3270 // java.lang.ref.SoftReference
3271
3272 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3273 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3274
3275 // java.lang.AssertionStatusDirectives
3276 //
3277 // The CheckAssertionStatusDirectives boolean can be removed from here and
3278 // globals.hpp after the AssertionStatusDirectives class has been integrated
3279 // into merlin "for some time." Without it, the vm will fail with early
3280 // merlin builds.
3281
3282 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3283 const char* nm = "java/lang/AssertionStatusDirectives";
3284 const char* sig = "[Ljava/lang/String;";
3285 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3286 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3287 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3288 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3289 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3290 }
3291
3292 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3293 }
3294
3295 #endif // PRODUCT
3296
3297 int InjectedField::compute_offset() {
3298 klassOop klass_oop = klass();
3299 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3300 if (!may_be_java && !fs.access_flags().is_internal()) {
3301 // Only look at injected fields
3302 continue;
3303 }
3304 if (fs.name() == name() && fs.signature() == signature()) {
3305 return fs.offset();
3306 }
3307 }
3308 ResourceMark rm;
3309 tty->print_cr("Invalid layout of %s at %s", instanceKlass::cast(klass_oop)->external_name(), name()->as_C_string());
3310 fatal("Invalid layout of preloaded class");
3311 return -1;
3312 }
3313
3314 void javaClasses_init() {
3315 JavaClasses::compute_offsets();
3316 JavaClasses::check_offsets();
3317 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3318 }