1 /*
2 * Copyright (c) 1997, 2014, 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 #ifndef PRODUCT
130 klass_oop->print();
131 tty->print_cr("all fields:");
132 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
133 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
134 }
135 #endif //PRODUCT
136 fatal("Invalid layout of preloaded class");
137 }
138 dest_offset = fd.offset();
139 }
140
141 // Same as above but for "optional" offsets that might not be present in certain JDK versions
142 static void
143 compute_optional_offset(int& dest_offset,
144 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
145 bool allow_super = false) {
146 fieldDescriptor fd;
147 instanceKlass* ik = instanceKlass::cast(klass_oop);
148 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
149 dest_offset = fd.offset();
150 }
151 }
152
153
154 int java_lang_String::value_offset = 0;
155 int java_lang_String::offset_offset = 0;
156 int java_lang_String::count_offset = 0;
157 int java_lang_String::hash_offset = 0;
158
159 bool java_lang_String::initialized = false;
160
161 void java_lang_String::compute_offsets() {
162 assert(!initialized, "offsets should be initialized only once");
163
164 klassOop k = SystemDictionary::String_klass();
165 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
166 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
167 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
168 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
169
170 initialized = true;
171 }
172
173 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) {
174 assert(initialized, "Must be initialized");
175 // Create the String object first, so there's a chance that the String
176 // and the char array it points to end up in the same cache line.
177 oop obj;
178 if (tenured) {
179 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_permanent_instance(CHECK_NH);
180 } else {
181 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
182 }
183
184 // Create the char array. The String object must be handlized here
185 // because GC can happen as a result of the allocation attempt.
186 Handle h_obj(THREAD, obj);
187 typeArrayOop buffer;
188 if (tenured) {
189 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH);
190 } else {
191 buffer = oopFactory::new_charArray(length, CHECK_NH);
192 }
193
194 // Point the String at the char array
195 obj = h_obj();
196 set_value(obj, buffer);
197 // No need to zero the offset, allocation zero'ed the entire String object
198 assert(offset(obj) == 0, "initial String offset should be zero");
199 //set_offset(obj, 0);
200 set_count(obj, length);
201
202 return h_obj;
203 }
204
205 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) {
206 Handle h_obj = basic_create(length, tenured, CHECK_NH);
207 typeArrayOop buffer = value(h_obj());
208 for (int index = 0; index < length; index++) {
209 buffer->char_at_put(index, unicode[index]);
210 }
211 return h_obj;
212 }
213
214 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
215 return basic_create_from_unicode(unicode, length, false, CHECK_NH);
216 }
217
218 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) {
219 return basic_create_from_unicode(unicode, length, JavaObjectsInPerm, CHECK_NH);
220 }
221
222 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
223 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0);
224 return h_obj();
225 }
226
227 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
228 if (utf8_str == NULL) {
229 return Handle();
230 }
231 int length = UTF8::unicode_length(utf8_str);
232 Handle h_obj = basic_create(length, false, CHECK_NH);
233 if (length > 0) {
234 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
235 }
236 return h_obj;
237 }
238
239 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
240 Handle h_obj = create_from_str(utf8_str, CHECK_0);
241 return h_obj();
242 }
243
244 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
245 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
246 Handle h_obj = basic_create(length, false, CHECK_NH);
247 if (length > 0) {
248 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
249 }
250 return h_obj;
251 }
252
253 // Converts a C string to a Java String based on current encoding
254 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
255 assert(str != NULL, "bad arguments");
256
257 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
258 static to_java_string_fn_t _to_java_string_fn = NULL;
259
260 if (_to_java_string_fn == NULL) {
261 void *lib_handle = os::native_java_library();
262 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
263 if (_to_java_string_fn == NULL) {
264 fatal("NewStringPlatform missing");
265 }
266 }
267
268 jstring js = NULL;
269 { JavaThread* thread = (JavaThread*)THREAD;
270 assert(thread->is_Java_thread(), "must be java thread");
271 HandleMark hm(thread);
272 ThreadToNativeFromVM ttn(thread);
273 js = (_to_java_string_fn)(thread->jni_environment(), str);
274 }
275 return Handle(THREAD, JNIHandles::resolve(js));
276 }
277
278 // Converts a Java String to a native C string that can be used for
279 // native OS calls.
280 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
281
282 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
283 static to_platform_string_fn_t _to_platform_string_fn = NULL;
284
285 if (_to_platform_string_fn == NULL) {
286 void *lib_handle = os::native_java_library();
287 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
288 if (_to_platform_string_fn == NULL) {
289 fatal("GetStringPlatformChars missing");
290 }
291 }
292
293 char *native_platform_string;
294 { JavaThread* thread = (JavaThread*)THREAD;
295 assert(thread->is_Java_thread(), "must be java thread");
296 JNIEnv *env = thread->jni_environment();
297 jstring js = (jstring) JNIHandles::make_local(env, java_string());
298 bool is_copy;
299 HandleMark hm(thread);
300 ThreadToNativeFromVM ttn(thread);
301 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
302 assert(is_copy == JNI_TRUE, "is_copy value changed");
303 JNIHandles::destroy_local(js);
304 }
305 return native_platform_string;
306 }
307
308 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
309 oop obj = java_string();
310 // Typical usage is to convert all '/' to '.' in string.
311 typeArrayOop value = java_lang_String::value(obj);
312 int offset = java_lang_String::offset(obj);
313 int length = java_lang_String::length(obj);
314
315 // First check if any from_char exist
316 int index; // Declared outside, used later
317 for (index = 0; index < length; index++) {
318 if (value->char_at(index + offset) == from_char) {
319 break;
320 }
321 }
322 if (index == length) {
323 // No from_char, so do not copy.
324 return java_string;
325 }
326
327 // Create new UNICODE buffer. Must handlize value because GC
328 // may happen during String and char array creation.
329 typeArrayHandle h_value(THREAD, value);
330 Handle string = basic_create(length, false, CHECK_NH);
331
332 typeArrayOop from_buffer = h_value();
333 typeArrayOop to_buffer = java_lang_String::value(string());
334
335 // Copy contents
336 for (index = 0; index < length; index++) {
337 jchar c = from_buffer->char_at(index + offset);
338 if (c == from_char) {
339 c = to_char;
340 }
341 to_buffer->char_at_put(index, c);
342 }
343 return string;
344 }
345
346 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) {
347 typeArrayOop value = java_lang_String::value(java_string);
348 int offset = java_lang_String::offset(java_string);
349 length = java_lang_String::length(java_string);
350
351 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
352 for (int index = 0; index < length; index++) {
353 result[index] = value->char_at(index + offset);
354 }
355 return result;
356 }
357
358 unsigned int java_lang_String::to_hash(oop java_string) {
359 int length = java_lang_String::length(java_string);
360 // Zero length string will hash to zero with String.toHash() function.
361 if (length == 0) return 0;
362
363 typeArrayOop value = java_lang_String::value(java_string);
364 int offset = java_lang_String::offset(java_string);
365 return java_lang_String::to_hash(value->char_at_addr(offset), length);
366 }
367
368 unsigned int java_lang_String::hash_string(oop java_string) {
369 int length = java_lang_String::length(java_string);
370 // Zero length string doesn't hash necessarily hash to zero.
371 if (length == 0) {
372 return StringTable::hash_string(NULL, 0);
373 }
374
375 typeArrayOop value = java_lang_String::value(java_string);
376 int offset = java_lang_String::offset(java_string);
377 return StringTable::hash_string(value->char_at_addr(offset), length);
378 }
379
380 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
381 oop obj = java_string();
382 typeArrayOop value = java_lang_String::value(obj);
383 int offset = java_lang_String::offset(obj);
384 int length = java_lang_String::length(obj);
385 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
386 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
387 return sym;
388 }
389
390 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
391 typeArrayOop value = java_lang_String::value(java_string);
392 int offset = java_lang_String::offset(java_string);
393 int length = java_lang_String::length(java_string);
394 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
395 return SymbolTable::probe_unicode(base, length);
396 }
397
398
399 int java_lang_String::utf8_length(oop java_string) {
400 typeArrayOop value = java_lang_String::value(java_string);
401 int offset = java_lang_String::offset(java_string);
402 int length = java_lang_String::length(java_string);
403 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
404 return UNICODE::utf8_length(position, length);
405 }
406
407 char* java_lang_String::as_utf8_string(oop java_string) {
408 typeArrayOop value = java_lang_String::value(java_string);
409 int offset = java_lang_String::offset(java_string);
410 int length = java_lang_String::length(java_string);
411 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
412 return UNICODE::as_utf8(position, length);
413 }
414
415 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
416 typeArrayOop value = java_lang_String::value(java_string);
417 int offset = java_lang_String::offset(java_string);
418 int length = java_lang_String::length(java_string);
419 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
420 return UNICODE::as_utf8(position, length, buf, buflen);
421 }
422
423 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
424 typeArrayOop value = java_lang_String::value(java_string);
425 int offset = java_lang_String::offset(java_string);
426 int length = java_lang_String::length(java_string);
427 assert(start + len <= length, "just checking");
428 jchar* position = value->char_at_addr(offset + start);
429 return UNICODE::as_utf8(position, len);
430 }
431
432 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
433 assert(SharedSkipVerify ||
434 java_string->klass() == SystemDictionary::String_klass(),
435 "must be java_string");
436 typeArrayOop value = java_lang_String::value(java_string);
437 int offset = java_lang_String::offset(java_string);
438 int length = java_lang_String::length(java_string);
439 if (length != len) {
440 return false;
441 }
442 for (int i = 0; i < len; i++) {
443 if (value->char_at(i + offset) != chars[i]) {
444 return false;
445 }
446 }
447 return true;
448 }
449
450 void java_lang_String::print(Handle java_string, outputStream* st) {
451 oop obj = java_string();
452 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
453 typeArrayOop value = java_lang_String::value(obj);
454 int offset = java_lang_String::offset(obj);
455 int length = java_lang_String::length(obj);
456
457 int end = MIN2(length, 100);
458 if (value == NULL) {
459 // This can happen if, e.g., printing a String
460 // object before its initializer has been called
461 st->print_cr("NULL");
462 } else {
463 st->print("\"");
464 for (int index = 0; index < length; index++) {
465 st->print("%c", value->char_at(index + offset));
466 }
467 st->print("\"");
468 }
469 }
470
471 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
472 Handle mirror (THREAD, fd->field_holder()->java_mirror());
473 assert(mirror.not_null() && fd->is_static(), "just checking");
474 if (fd->has_initial_value()) {
475 BasicType t = fd->field_type();
476 switch (t) {
477 case T_BYTE:
478 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
479 break;
480 case T_BOOLEAN:
481 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
482 break;
483 case T_CHAR:
484 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
485 break;
486 case T_SHORT:
487 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
488 break;
489 case T_INT:
490 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
491 break;
492 case T_FLOAT:
493 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
494 break;
495 case T_DOUBLE:
496 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
497 break;
498 case T_LONG:
499 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
500 break;
501 case T_OBJECT:
502 {
503 #ifdef ASSERT
504 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
505 assert(fd->signature() == sym, "just checking");
506 #endif
507 oop string = fd->string_initial_value(CHECK);
508 mirror()->obj_field_put(fd->offset(), string);
509 }
510 break;
511 default:
512 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
513 "Illegal ConstantValue attribute in class file");
514 }
515 }
516 }
517
518
519 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
520 assert(instanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
521
522 if (k->oop_is_instance()) {
523 // During bootstrap, java.lang.Class wasn't loaded so static field
524 // offsets were computed without the size added it. Go back and
525 // update all the static field offsets to included the size.
526 for (JavaFieldStream fs(instanceKlass::cast(k())); !fs.done(); fs.next()) {
527 if (fs.access_flags().is_static()) {
528 int real_offset = fs.offset() + instanceMirrorKlass::offset_of_static_fields();
529 fs.set_offset(real_offset);
530 }
531 }
532 }
533 create_mirror(k, Handle(NULL), CHECK);
534 }
535
536 oop java_lang_Class::create_mirror(KlassHandle k, Handle class_loader, TRAPS) {
537 assert(k->java_mirror() == NULL, "should only assign mirror once");
538 // Use this moment of initialization to cache modifier_flags also,
539 // to support Class.getModifiers(). Instance classes recalculate
540 // the cached flags after the class file is parsed, but before the
541 // class is put into the system dictionary.
542 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
543 k->set_modifier_flags(computed_modifiers);
544 if (SystemDictionary::Class_klass_loaded() && (k->oop_is_instance() || k->oop_is_javaArray())) {
545 // Allocate mirror (java.lang.Class instance)
546 Handle mirror = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
547
548 instanceMirrorKlass* mk = instanceMirrorKlass::cast(mirror->klass());
549 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
550
551 // It might also have a component mirror. This mirror must already exist.
552 if (k->oop_is_javaArray()) {
553 Handle comp_mirror;
554 if (k->oop_is_typeArray()) {
555 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type();
556 comp_mirror = Universe::java_mirror(type);
557 assert(comp_mirror.not_null(), "must have primitive mirror");
558 } else if (k->oop_is_objArray()) {
559 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass();
560 if (element_klass != NULL
561 && (Klass::cast(element_klass)->oop_is_instance() ||
562 Klass::cast(element_klass)->oop_is_javaArray())) {
563 comp_mirror = Klass::cast(element_klass)->java_mirror();
564 assert(comp_mirror.not_null(), "must have element mirror");
565 }
566 // else some object array internal to the VM, like systemObjArrayKlassObj
567 }
568 if (comp_mirror.not_null()) {
569 // Two-way link between the array klass and its component mirror:
570 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror());
571 set_array_klass(comp_mirror(), k->as_klassOop());
572 }
573 } else if (k->oop_is_instance()) {
574 // Initialize static fields
575 instanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
576 }
577 // set the classLoader field in the java_lang_Class instance
578 assert(class_loader() == k->class_loader(), "should be same");
579 set_class_loader(mirror(), class_loader());
580 return mirror();
581 } else {
582 return NULL;
583 }
584 }
585
586
587
588 int java_lang_Class::oop_size(oop java_class) {
589 assert(_oop_size_offset != 0, "must be set");
590 return java_class->int_field(_oop_size_offset);
591 }
592 void java_lang_Class::set_oop_size(oop java_class, int size) {
593 assert(_oop_size_offset != 0, "must be set");
594 java_class->int_field_put(_oop_size_offset, size);
595 }
596 int java_lang_Class::static_oop_field_count(oop java_class) {
597 assert(_static_oop_field_count_offset != 0, "must be set");
598 return java_class->int_field(_static_oop_field_count_offset);
599 }
600 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
601 assert(_static_oop_field_count_offset != 0, "must be set");
602 java_class->int_field_put(_static_oop_field_count_offset, size);
603 }
604
605 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
606 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
607 if (_class_loader_offset != 0) {
608 java_class->obj_field_put(_class_loader_offset, loader);
609 }
610 }
611
612 oop java_lang_Class::class_loader(oop java_class) {
613 assert(_class_loader_offset != 0, "must be set");
614 return java_class->obj_field(_class_loader_offset);
615 }
616
617 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
618 // This should be improved by adding a field at the Java level or by
619 // introducing a new VM klass (see comment in ClassFileParser)
620 oop java_class = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance((oop)NULL, CHECK_0);
621 if (type != T_VOID) {
622 klassOop aklass = Universe::typeArrayKlassObj(type);
623 assert(aklass != NULL, "correct bootstrap");
624 set_array_klass(java_class, aklass);
625 }
626 #ifdef ASSERT
627 instanceMirrorKlass* mk = instanceMirrorKlass::cast(SystemDictionary::Class_klass());
628 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
629 #endif
630 return java_class;
631 }
632
633
634 klassOop java_lang_Class::as_klassOop(oop java_class) {
635 //%note memory_2
636 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
637 klassOop k = klassOop(java_class->obj_field(_klass_offset));
638 assert(k == NULL || k->is_klass(), "type check");
639 return k;
640 }
641
642
643 void java_lang_Class::set_klass(oop java_class, klassOop klass) {
644 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
645 java_class->obj_field_put(_klass_offset, klass);
646 }
647
648
649 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
650 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
651 Symbol* name = NULL;
652 bool is_instance = false;
653 if (is_primitive(java_class)) {
654 name = vmSymbols::type_signature(primitive_type(java_class));
655 } else {
656 klassOop k = as_klassOop(java_class);
657 is_instance = Klass::cast(k)->oop_is_instance();
658 name = Klass::cast(k)->name();
659 }
660 if (name == NULL) {
661 st->print("<null>");
662 return;
663 }
664 if (is_instance) st->print("L");
665 st->write((char*) name->base(), (int) name->utf8_length());
666 if (is_instance) st->print(";");
667 }
668
669 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
670 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
671 Symbol* name;
672 if (is_primitive(java_class)) {
673 name = vmSymbols::type_signature(primitive_type(java_class));
674 // Because this can create a new symbol, the caller has to decrement
675 // the refcount, so make adjustment here and below for symbols returned
676 // that are not created or incremented due to a successful lookup.
677 name->increment_refcount();
678 } else {
679 klassOop k = as_klassOop(java_class);
680 if (!Klass::cast(k)->oop_is_instance()) {
681 name = Klass::cast(k)->name();
682 name->increment_refcount();
683 } else {
684 ResourceMark rm;
685 const char* sigstr = Klass::cast(k)->signature_name();
686 int siglen = (int) strlen(sigstr);
687 if (!intern_if_not_found) {
688 name = SymbolTable::probe(sigstr, siglen);
689 } else {
690 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
691 }
692 }
693 }
694 return name;
695 }
696
697
698 klassOop java_lang_Class::array_klass(oop java_class) {
699 klassOop k = klassOop(java_class->obj_field(_array_klass_offset));
700 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass");
701 return k;
702 }
703
704
705 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) {
706 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass");
707 java_class->obj_field_put(_array_klass_offset, klass);
708 }
709
710
711 methodOop java_lang_Class::resolved_constructor(oop java_class) {
712 oop constructor = java_class->obj_field(_resolved_constructor_offset);
713 assert(constructor == NULL || constructor->is_method(), "should be method");
714 return methodOop(constructor);
715 }
716
717
718 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) {
719 assert(constructor->is_method(), "should be method");
720 java_class->obj_field_put(_resolved_constructor_offset, constructor);
721 }
722
723
724 bool java_lang_Class::is_primitive(oop java_class) {
725 // should assert:
726 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
727 klassOop k = klassOop(java_class->obj_field(_klass_offset));
728 return k == NULL;
729 }
730
731
732 BasicType java_lang_Class::primitive_type(oop java_class) {
733 assert(java_lang_Class::is_primitive(java_class), "just checking");
734 klassOop ak = klassOop(java_class->obj_field(_array_klass_offset));
735 BasicType type = T_VOID;
736 if (ak != NULL) {
737 // Note: create_basic_type_mirror above initializes ak to a non-null value.
738 type = arrayKlass::cast(ak)->element_type();
739 } else {
740 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
741 }
742 assert(Universe::java_mirror(type) == java_class, "must be consistent");
743 return type;
744 }
745
746 BasicType java_lang_Class::as_BasicType(oop java_class, klassOop* reference_klass) {
747 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
748 if (is_primitive(java_class)) {
749 if (reference_klass != NULL)
750 (*reference_klass) = NULL;
751 return primitive_type(java_class);
752 } else {
753 if (reference_klass != NULL)
754 (*reference_klass) = as_klassOop(java_class);
755 return T_OBJECT;
756 }
757 }
758
759
760 oop java_lang_Class::primitive_mirror(BasicType t) {
761 oop mirror = Universe::java_mirror(t);
762 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
763 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
764 return mirror;
765 }
766
767 bool java_lang_Class::offsets_computed = false;
768 int java_lang_Class::classRedefinedCount_offset = -1;
769
770 void java_lang_Class::compute_offsets() {
771 assert(!offsets_computed, "offsets should be initialized only once");
772 offsets_computed = true;
773
774 klassOop klass_oop = SystemDictionary::Class_klass();
775 // The classRedefinedCount field is only present starting in 1.5,
776 // so don't go fatal.
777 compute_optional_offset(classRedefinedCount_offset,
778 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
779
780 // Needs to be optional because the old build runs Queens during bootstrapping
781 // and jdk8-9 doesn't have coordinated pushes yet.
782 compute_optional_offset(_class_loader_offset,
783 klass_oop, vmSymbols::classClassLoader_name(),
784 vmSymbols::classloader_signature());
785
786 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
787 }
788
789 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
790 if (!JDK_Version::is_gte_jdk15x_version()
791 || classRedefinedCount_offset == -1) {
792 // The classRedefinedCount field is only present starting in 1.5.
793 // If we don't have an offset for it then just return -1 as a marker.
794 return -1;
795 }
796
797 return the_class_mirror->int_field(classRedefinedCount_offset);
798 }
799
800 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
801 if (!JDK_Version::is_gte_jdk15x_version()
802 || classRedefinedCount_offset == -1) {
803 // The classRedefinedCount field is only present starting in 1.5.
804 // If we don't have an offset for it then nothing to set.
805 return;
806 }
807
808 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
809 }
810
811
812 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
813 // platform thread structure, and a eetop offset which was used for thread
814 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
815 // merged, so in the HotSpot VM we just use the eetop field for the thread
816 // instead of the privateInfo_offset.
817 //
818 // Note: The stackSize field is only present starting in 1.4.
819
820 int java_lang_Thread::_name_offset = 0;
821 int java_lang_Thread::_group_offset = 0;
822 int java_lang_Thread::_contextClassLoader_offset = 0;
823 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
824 int java_lang_Thread::_priority_offset = 0;
825 int java_lang_Thread::_eetop_offset = 0;
826 int java_lang_Thread::_daemon_offset = 0;
827 int java_lang_Thread::_stillborn_offset = 0;
828 int java_lang_Thread::_stackSize_offset = 0;
829 int java_lang_Thread::_tid_offset = 0;
830 int java_lang_Thread::_thread_status_offset = 0;
831 int java_lang_Thread::_park_blocker_offset = 0;
832 int java_lang_Thread::_park_event_offset = 0 ;
833
834
835 void java_lang_Thread::compute_offsets() {
836 assert(_group_offset == 0, "offsets should be initialized only once");
837
838 klassOop k = SystemDictionary::Thread_klass();
839 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
840 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
841 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
842 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
843 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
844 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
845 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
846 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
847 // The stackSize field is only present starting in 1.4, so don't go fatal.
848 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
849 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
850 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
851 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
852 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
853 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
854 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
855 vmSymbols::long_signature());
856 }
857
858
859 JavaThread* java_lang_Thread::thread(oop java_thread) {
860 return (JavaThread*)java_thread->address_field(_eetop_offset);
861 }
862
863
864 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
865 java_thread->address_field_put(_eetop_offset, (address)thread);
866 }
867
868
869 typeArrayOop java_lang_Thread::name(oop java_thread) {
870 oop name = java_thread->obj_field(_name_offset);
871 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
872 return typeArrayOop(name);
873 }
874
875
876 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
877 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
878 java_thread->obj_field_put(_name_offset, name);
879 }
880
881
882 ThreadPriority java_lang_Thread::priority(oop java_thread) {
883 return (ThreadPriority)java_thread->int_field(_priority_offset);
884 }
885
886
887 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
888 java_thread->int_field_put(_priority_offset, priority);
889 }
890
891
892 oop java_lang_Thread::threadGroup(oop java_thread) {
893 return java_thread->obj_field(_group_offset);
894 }
895
896
897 bool java_lang_Thread::is_stillborn(oop java_thread) {
898 return java_thread->bool_field(_stillborn_offset) != 0;
899 }
900
901
902 // We never have reason to turn the stillborn bit off
903 void java_lang_Thread::set_stillborn(oop java_thread) {
904 java_thread->bool_field_put(_stillborn_offset, true);
905 }
906
907
908 bool java_lang_Thread::is_alive(oop java_thread) {
909 JavaThread* thr = java_lang_Thread::thread(java_thread);
910 return (thr != NULL);
911 }
912
913
914 bool java_lang_Thread::is_daemon(oop java_thread) {
915 return java_thread->bool_field(_daemon_offset) != 0;
916 }
917
918
919 void java_lang_Thread::set_daemon(oop java_thread) {
920 java_thread->bool_field_put(_daemon_offset, true);
921 }
922
923 oop java_lang_Thread::context_class_loader(oop java_thread) {
924 return java_thread->obj_field(_contextClassLoader_offset);
925 }
926
927 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
928 return java_thread->obj_field(_inheritedAccessControlContext_offset);
929 }
930
931
932 jlong java_lang_Thread::stackSize(oop java_thread) {
933 // The stackSize field is only present starting in 1.4
934 if (_stackSize_offset > 0) {
935 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
936 return java_thread->long_field(_stackSize_offset);
937 } else {
938 return 0;
939 }
940 }
941
942 // Write the thread status value to threadStatus field in java.lang.Thread java class.
943 void java_lang_Thread::set_thread_status(oop java_thread,
944 java_lang_Thread::ThreadStatus status) {
945 // The threadStatus is only present starting in 1.5
946 if (_thread_status_offset > 0) {
947 java_thread->int_field_put(_thread_status_offset, status);
948 }
949 }
950
951 // Read thread status value from threadStatus field in java.lang.Thread java class.
952 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
953 assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() ||
954 JavaThread::current()->thread_state() == _thread_in_vm,
955 "Java Thread is not running in vm");
956 // The threadStatus is only present starting in 1.5
957 if (_thread_status_offset > 0) {
958 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
959 } else {
960 // All we can easily figure out is if it is alive, but that is
961 // enough info for a valid unknown status.
962 // These aren't restricted to valid set ThreadStatus values, so
963 // use JVMTI values and cast.
964 JavaThread* thr = java_lang_Thread::thread(java_thread);
965 if (thr == NULL) {
966 // the thread hasn't run yet or is in the process of exiting
967 return NEW;
968 }
969 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
970 }
971 }
972
973
974 jlong java_lang_Thread::thread_id(oop java_thread) {
975 // The thread ID field is only present starting in 1.5
976 if (_tid_offset > 0) {
977 return java_thread->long_field(_tid_offset);
978 } else {
979 return 0;
980 }
981 }
982
983 oop java_lang_Thread::park_blocker(oop java_thread) {
984 assert(JDK_Version::current().supports_thread_park_blocker() &&
985 _park_blocker_offset != 0, "Must support parkBlocker field");
986
987 if (_park_blocker_offset > 0) {
988 return java_thread->obj_field(_park_blocker_offset);
989 }
990
991 return NULL;
992 }
993
994 jlong java_lang_Thread::park_event(oop java_thread) {
995 if (_park_event_offset > 0) {
996 return java_thread->long_field(_park_event_offset);
997 }
998 return 0;
999 }
1000
1001 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1002 if (_park_event_offset > 0) {
1003 java_thread->long_field_put(_park_event_offset, ptr);
1004 return true;
1005 }
1006 return false;
1007 }
1008
1009
1010 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1011 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
1012 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1013 switch (status) {
1014 case NEW : return "NEW";
1015 case RUNNABLE : return "RUNNABLE";
1016 case SLEEPING : return "TIMED_WAITING (sleeping)";
1017 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1018 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1019 case PARKED : return "WAITING (parking)";
1020 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1021 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1022 case TERMINATED : return "TERMINATED";
1023 default : return "UNKNOWN";
1024 };
1025 }
1026 int java_lang_ThreadGroup::_parent_offset = 0;
1027 int java_lang_ThreadGroup::_name_offset = 0;
1028 int java_lang_ThreadGroup::_threads_offset = 0;
1029 int java_lang_ThreadGroup::_groups_offset = 0;
1030 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1031 int java_lang_ThreadGroup::_destroyed_offset = 0;
1032 int java_lang_ThreadGroup::_daemon_offset = 0;
1033 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1034 int java_lang_ThreadGroup::_nthreads_offset = 0;
1035 int java_lang_ThreadGroup::_ngroups_offset = 0;
1036
1037 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1038 assert(java_thread_group->is_oop(), "thread group must be oop");
1039 return java_thread_group->obj_field(_parent_offset);
1040 }
1041
1042 // ("name as oop" accessor is not necessary)
1043
1044 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1045 oop name = java_thread_group->obj_field(_name_offset);
1046 // ThreadGroup.name can be null
1047 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1048 }
1049
1050 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1051 assert(java_thread_group->is_oop(), "thread group must be oop");
1052 return java_thread_group->int_field(_nthreads_offset);
1053 }
1054
1055 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1056 oop threads = java_thread_group->obj_field(_threads_offset);
1057 assert(threads != NULL, "threadgroups should have threads");
1058 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1059 return objArrayOop(threads);
1060 }
1061
1062 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1063 assert(java_thread_group->is_oop(), "thread group must be oop");
1064 return java_thread_group->int_field(_ngroups_offset);
1065 }
1066
1067 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1068 oop groups = java_thread_group->obj_field(_groups_offset);
1069 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1070 return objArrayOop(groups);
1071 }
1072
1073 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1074 assert(java_thread_group->is_oop(), "thread group must be oop");
1075 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1076 }
1077
1078 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1079 assert(java_thread_group->is_oop(), "thread group must be oop");
1080 return java_thread_group->bool_field(_destroyed_offset) != 0;
1081 }
1082
1083 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1084 assert(java_thread_group->is_oop(), "thread group must be oop");
1085 return java_thread_group->bool_field(_daemon_offset) != 0;
1086 }
1087
1088 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1089 assert(java_thread_group->is_oop(), "thread group must be oop");
1090 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1091 }
1092
1093 void java_lang_ThreadGroup::compute_offsets() {
1094 assert(_parent_offset == 0, "offsets should be initialized only once");
1095
1096 klassOop k = SystemDictionary::ThreadGroup_klass();
1097
1098 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1099 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1100 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1101 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1102 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1103 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1104 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1105 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1106 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1107 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1108 }
1109
1110 oop java_lang_Throwable::unassigned_stacktrace() {
1111 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Throwable_klass());
1112 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1113 if (UseCompressedOops) {
1114 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1115 } else {
1116 return oopDesc::load_decode_heap_oop((oop*)addr);
1117 }
1118 }
1119
1120 oop java_lang_Throwable::backtrace(oop throwable) {
1121 return throwable->obj_field_acquire(backtrace_offset);
1122 }
1123
1124
1125 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1126 throwable->release_obj_field_put(backtrace_offset, value);
1127 }
1128
1129
1130 oop java_lang_Throwable::message(oop throwable) {
1131 return throwable->obj_field(detailMessage_offset);
1132 }
1133
1134
1135 oop java_lang_Throwable::message(Handle throwable) {
1136 return throwable->obj_field(detailMessage_offset);
1137 }
1138
1139
1140 void java_lang_Throwable::set_message(oop throwable, oop value) {
1141 throwable->obj_field_put(detailMessage_offset, value);
1142 }
1143
1144
1145 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1146 throwable->obj_field_put(stackTrace_offset, st_element_array);
1147 }
1148
1149 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1150 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1151 set_stacktrace(throwable, NULL);
1152 }
1153
1154
1155 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1156 ResourceMark rm;
1157 klassOop k = throwable->klass();
1158 assert(k != NULL, "just checking");
1159 st->print("%s", instanceKlass::cast(k)->external_name());
1160 oop msg = message(throwable);
1161 if (msg != NULL) {
1162 st->print(": %s", java_lang_String::as_utf8_string(msg));
1163 }
1164 }
1165
1166
1167 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1168 ResourceMark rm;
1169 klassOop k = throwable->klass();
1170 assert(k != NULL, "just checking");
1171 st->print("%s", instanceKlass::cast(k)->external_name());
1172 oop msg = message(throwable);
1173 if (msg != NULL) {
1174 st->print(": %s", java_lang_String::as_utf8_string(msg));
1175 }
1176 }
1177
1178 // Print stack trace element to resource allocated buffer
1179 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) {
1180 // Get strings and string lengths
1181 instanceKlass* klass = instanceKlass::cast(method->method_holder());
1182 const char* klass_name = klass->external_name();
1183 int buf_len = (int)strlen(klass_name);
1184 char* source_file_name;
1185 if (klass->source_file_name() == NULL) {
1186 source_file_name = NULL;
1187 } else {
1188 source_file_name = klass->source_file_name()->as_C_string();
1189 buf_len += (int)strlen(source_file_name);
1190 }
1191 char* method_name = method->name()->as_C_string();
1192 buf_len += (int)strlen(method_name);
1193
1194 // Allocate temporary buffer with extra space for formatting and line number
1195 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1196
1197 // Print stack trace line in buffer
1198 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1199 if (method->is_native()) {
1200 strcat(buf, "(Native Method)");
1201 } else {
1202 int line_number = method->line_number_from_bci(bci);
1203 if (source_file_name != NULL && (line_number != -1)) {
1204 // Sourcename and linenumber
1205 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1206 } else if (source_file_name != NULL) {
1207 // Just sourcename
1208 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1209 } else {
1210 // Neither soucename and linenumber
1211 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1212 }
1213 nmethod* nm = method->code();
1214 if (WizardMode && nm != NULL) {
1215 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1216 }
1217 }
1218
1219 return buf;
1220 }
1221
1222
1223 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) {
1224 ResourceMark rm;
1225 char* buf = print_stack_element_to_buffer(method, bci);
1226 print_to_stream(stream, buf);
1227 }
1228
1229 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) {
1230 ResourceMark rm;
1231 char* buf = print_stack_element_to_buffer(method, bci);
1232 st->print_cr("%s", buf);
1233 }
1234
1235 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1236 if (stream.is_null()) {
1237 tty->print_cr("%s", str);
1238 } else {
1239 EXCEPTION_MARK;
1240 JavaValue result(T_VOID);
1241 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1242 if (!HAS_PENDING_EXCEPTION) {
1243 JavaCalls::call_virtual(&result,
1244 stream,
1245 KlassHandle(THREAD, stream->klass()),
1246 vmSymbols::println_name(),
1247 vmSymbols::char_array_void_signature(),
1248 arg,
1249 THREAD);
1250 }
1251 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1252 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1253 }
1254
1255 }
1256
1257
1258 const char* java_lang_Throwable::no_stack_trace_message() {
1259 return "\t<<no stack trace available>>";
1260 }
1261
1262
1263 // Currently used only for exceptions occurring during startup
1264 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1265 Thread *THREAD = Thread::current();
1266 Handle h_throwable(THREAD, throwable);
1267 while (h_throwable.not_null()) {
1268 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1269 if (result.is_null()) {
1270 st->print_cr(no_stack_trace_message());
1271 return;
1272 }
1273
1274 while (result.not_null()) {
1275 objArrayHandle methods (THREAD,
1276 objArrayOop(result->obj_at(trace_methods_offset)));
1277 typeArrayHandle bcis (THREAD,
1278 typeArrayOop(result->obj_at(trace_bcis_offset)));
1279
1280 if (methods.is_null() || bcis.is_null()) {
1281 st->print_cr(no_stack_trace_message());
1282 return;
1283 }
1284
1285 int length = methods()->length();
1286 for (int index = 0; index < length; index++) {
1287 methodOop method = methodOop(methods()->obj_at(index));
1288 if (method == NULL) goto handle_cause;
1289 int bci = bcis->ushort_at(index);
1290 print_stack_element(st, method, bci);
1291 }
1292 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1293 }
1294 handle_cause:
1295 {
1296 EXCEPTION_MARK;
1297 JavaValue result(T_OBJECT);
1298 JavaCalls::call_virtual(&result,
1299 h_throwable,
1300 KlassHandle(THREAD, h_throwable->klass()),
1301 vmSymbols::getCause_name(),
1302 vmSymbols::void_throwable_signature(),
1303 THREAD);
1304 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1305 if (HAS_PENDING_EXCEPTION) {
1306 CLEAR_PENDING_EXCEPTION;
1307 h_throwable = Handle();
1308 } else {
1309 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1310 if (h_throwable.not_null()) {
1311 st->print("Caused by: ");
1312 print(h_throwable, st);
1313 st->cr();
1314 }
1315 }
1316 }
1317 }
1318 }
1319
1320
1321 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1322 // Note: this is no longer used in Merlin, but we support it for compatibility.
1323 Thread *thread = Thread::current();
1324 Handle stream(thread, print_stream);
1325 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1326 if (result.is_null()) {
1327 print_to_stream(stream, no_stack_trace_message());
1328 return;
1329 }
1330
1331 while (result.not_null()) {
1332 objArrayHandle methods (thread,
1333 objArrayOop(result->obj_at(trace_methods_offset)));
1334 typeArrayHandle bcis (thread,
1335 typeArrayOop(result->obj_at(trace_bcis_offset)));
1336
1337 if (methods.is_null() || bcis.is_null()) {
1338 print_to_stream(stream, no_stack_trace_message());
1339 return;
1340 }
1341
1342 int length = methods()->length();
1343 for (int index = 0; index < length; index++) {
1344 methodOop method = methodOop(methods()->obj_at(index));
1345 if (method == NULL) return;
1346 int bci = bcis->ushort_at(index);
1347 print_stack_element(stream, method, bci);
1348 }
1349 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1350 }
1351 }
1352
1353 // This class provides a simple wrapper over the internal structure of
1354 // exception backtrace to insulate users of the backtrace from needing
1355 // to know what it looks like.
1356 class BacktraceBuilder: public StackObj {
1357 private:
1358 Handle _backtrace;
1359 objArrayOop _head;
1360 objArrayOop _methods;
1361 typeArrayOop _bcis;
1362 int _index;
1363 No_Safepoint_Verifier _nsv;
1364
1365 public:
1366
1367 enum {
1368 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1369 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1370 trace_next_offset = java_lang_Throwable::trace_next_offset,
1371 trace_size = java_lang_Throwable::trace_size,
1372 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1373 };
1374
1375 // constructor for new backtrace
1376 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) {
1377 expand(CHECK);
1378 _backtrace = _head;
1379 _index = 0;
1380 }
1381
1382 void expand(TRAPS) {
1383 objArrayHandle old_head(THREAD, _head);
1384 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1385
1386 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1387 objArrayHandle new_head(THREAD, head);
1388
1389 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1390 objArrayHandle new_methods(THREAD, methods);
1391
1392 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1393 typeArrayHandle new_bcis(THREAD, bcis);
1394
1395 if (!old_head.is_null()) {
1396 old_head->obj_at_put(trace_next_offset, new_head());
1397 }
1398 new_head->obj_at_put(trace_methods_offset, new_methods());
1399 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1400
1401 _head = new_head();
1402 _methods = new_methods();
1403 _bcis = new_bcis();
1404 _index = 0;
1405 }
1406
1407 oop backtrace() {
1408 return _backtrace();
1409 }
1410
1411 inline void push(methodOop method, int bci, TRAPS) {
1412 // Smear the -1 bci to 0 since the array only holds unsigned
1413 // shorts. The later line number lookup would just smear the -1
1414 // to a 0 even if it could be recorded.
1415 if (bci == SynchronizationEntryBCI) bci = 0;
1416 assert(bci == (jushort)bci, "doesn't fit");
1417
1418 if (_index >= trace_chunk_size) {
1419 methodHandle mhandle(THREAD, method);
1420 expand(CHECK);
1421 method = mhandle();
1422 }
1423
1424 _methods->obj_at_put(_index, method);
1425 _bcis->ushort_at_put(_index, bci);
1426 _index++;
1427 }
1428
1429 methodOop current_method() {
1430 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1431 return methodOop(_methods->obj_at(_index));
1432 }
1433
1434 jushort current_bci() {
1435 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1436 return _bcis->ushort_at(_index);
1437 }
1438 };
1439
1440
1441 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1442 if (!StackTraceInThrowable) return;
1443 ResourceMark rm(THREAD);
1444
1445 // Start out by clearing the backtrace for this object, in case the VM
1446 // runs out of memory while allocating the stack trace
1447 set_backtrace(throwable(), NULL);
1448 if (JDK_Version::is_gte_jdk14x_version()) {
1449 // New since 1.4, clear lazily constructed Java level stacktrace if
1450 // refilling occurs
1451 // This is unnecessary in 1.7+ but harmless
1452 clear_stacktrace(throwable());
1453 }
1454
1455 int max_depth = MaxJavaStackTraceDepth;
1456 JavaThread* thread = (JavaThread*)THREAD;
1457 BacktraceBuilder bt(CHECK);
1458
1459 // If there is no Java frame just return the method that was being called
1460 // with bci 0
1461 if (!thread->has_last_Java_frame()) {
1462 if (max_depth >= 1 && method() != NULL) {
1463 bt.push(method(), 0, CHECK);
1464 set_backtrace(throwable(), bt.backtrace());
1465 }
1466 return;
1467 }
1468
1469 // Instead of using vframe directly, this version of fill_in_stack_trace
1470 // basically handles everything by hand. This significantly improved the
1471 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1472 // See bug 6333838 for more details.
1473 // The "ASSERT" here is to verify this method generates the exactly same stack
1474 // trace as utilizing vframe.
1475 #ifdef ASSERT
1476 vframeStream st(thread);
1477 methodHandle st_method(THREAD, st.method());
1478 #endif
1479 int total_count = 0;
1480 RegisterMap map(thread, false);
1481 int decode_offset = 0;
1482 nmethod* nm = NULL;
1483 bool skip_fillInStackTrace_check = false;
1484 bool skip_throwableInit_check = false;
1485 bool skip_hidden = !ShowHiddenFrames;
1486
1487 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1488 methodOop method = NULL;
1489 int bci = 0;
1490
1491 // Compiled java method case.
1492 if (decode_offset != 0) {
1493 DebugInfoReadStream stream(nm, decode_offset);
1494 decode_offset = stream.read_int();
1495 method = (methodOop)nm->oop_at(stream.read_int());
1496 bci = stream.read_bci();
1497 } else {
1498 if (fr.is_first_frame()) break;
1499 address pc = fr.pc();
1500 if (fr.is_interpreted_frame()) {
1501 intptr_t bcx = fr.interpreter_frame_bcx();
1502 method = fr.interpreter_frame_method();
1503 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1504 fr = fr.sender(&map);
1505 } else {
1506 CodeBlob* cb = fr.cb();
1507 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1508 // but non nmethod
1509 fr = fr.sender(&map);
1510 if (cb == NULL || !cb->is_nmethod()) {
1511 continue;
1512 }
1513 nm = (nmethod*)cb;
1514 if (nm->method()->is_native()) {
1515 method = nm->method();
1516 bci = 0;
1517 } else {
1518 PcDesc* pd = nm->pc_desc_at(pc);
1519 decode_offset = pd->scope_decode_offset();
1520 // if decode_offset is not equal to 0, it will execute the
1521 // "compiled java method case" at the beginning of the loop.
1522 continue;
1523 }
1524 }
1525 }
1526 #ifdef ASSERT
1527 assert(st_method() == method && st.bci() == bci,
1528 "Wrong stack trace");
1529 st.next();
1530 // vframeStream::method isn't GC-safe so store off a copy
1531 // of the methodOop in case we GC.
1532 if (!st.at_end()) {
1533 st_method = st.method();
1534 }
1535 #endif
1536
1537 // the format of the stacktrace will be:
1538 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1539 // - 0 or more <init> methods for the exception class (skipped)
1540 // - rest of the stack
1541
1542 if (!skip_fillInStackTrace_check) {
1543 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1544 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1545 throwable->is_a(method->method_holder())) {
1546 continue;
1547 }
1548 else {
1549 skip_fillInStackTrace_check = true; // gone past them all
1550 }
1551 }
1552 if (!skip_throwableInit_check) {
1553 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1554
1555 // skip <init> methods of the exception class and superclasses
1556 // This is simlar to classic VM.
1557 if (method->name() == vmSymbols::object_initializer_name() &&
1558 throwable->is_a(method->method_holder())) {
1559 continue;
1560 } else {
1561 // there are none or we've seen them all - either way stop checking
1562 skip_throwableInit_check = true;
1563 }
1564 }
1565 if (method->is_hidden()) {
1566 if (skip_hidden) continue;
1567 }
1568 bt.push(method, bci, CHECK);
1569 total_count++;
1570 }
1571
1572 // Put completed stack trace into throwable object
1573 set_backtrace(throwable(), bt.backtrace());
1574 }
1575
1576 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1577 // No-op if stack trace is disabled
1578 if (!StackTraceInThrowable) {
1579 return;
1580 }
1581
1582 // Disable stack traces for some preallocated out of memory errors
1583 if (!Universe::should_fill_in_stack_trace(throwable)) {
1584 return;
1585 }
1586
1587 PRESERVE_EXCEPTION_MARK;
1588
1589 JavaThread* thread = JavaThread::active();
1590 fill_in_stack_trace(throwable, method, thread);
1591 // ignore exceptions thrown during stack trace filling
1592 CLEAR_PENDING_EXCEPTION;
1593 }
1594
1595 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1596 // Allocate stack trace - backtrace is created but not filled in
1597
1598 // No-op if stack trace is disabled
1599 if (!StackTraceInThrowable) return;
1600
1601 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1602 objArrayHandle backtrace (THREAD, h_oop);
1603 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1604 objArrayHandle methods (THREAD, m_oop);
1605 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1606 typeArrayHandle bcis(THREAD, b);
1607
1608 // backtrace has space for one chunk (next is NULL)
1609 backtrace->obj_at_put(trace_methods_offset, methods());
1610 backtrace->obj_at_put(trace_bcis_offset, bcis());
1611 set_backtrace(throwable(), backtrace());
1612 }
1613
1614
1615 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1616 // Fill in stack trace into preallocated backtrace (no GC)
1617
1618 // No-op if stack trace is disabled
1619 if (!StackTraceInThrowable) return;
1620
1621 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1622
1623 oop backtrace = java_lang_Throwable::backtrace(throwable());
1624 assert(backtrace != NULL, "backtrace not preallocated");
1625
1626 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset);
1627 objArrayOop methods = objArrayOop(m);
1628 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1629
1630 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset);
1631 typeArrayOop bcis = typeArrayOop(b);
1632 assert(bcis != NULL, "bci array not preallocated");
1633
1634 assert(methods->length() == bcis->length(), "method and bci arrays should match");
1635
1636 JavaThread* thread = JavaThread::current();
1637 ResourceMark rm(thread);
1638 vframeStream st(thread);
1639
1640 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1641 // methods as preallocated errors aren't created by "java" code.
1642
1643 // fill in as much stack trace as possible
1644 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1645 int chunk_count = 0;
1646
1647 for (;!st.at_end(); st.next()) {
1648 // Add entry and smear the -1 bci to 0 since the array only holds
1649 // unsigned shorts. The later line number lookup would just smear
1650 // the -1 to a 0 even if it could be recorded.
1651 int bci = st.bci();
1652 if (bci == SynchronizationEntryBCI) bci = 0;
1653 assert(bci == (jushort)bci, "doesn't fit");
1654 bcis->ushort_at_put(chunk_count, bci);
1655 methods->obj_at_put(chunk_count, st.method());
1656
1657 chunk_count++;
1658
1659 // Bail-out for deep stacks
1660 if (chunk_count >= max_chunks) break;
1661 }
1662
1663 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1664 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1665 // can be removed in a JDK using this JVM version
1666 if (JDK_Version::is_gte_jdk17x_version()) {
1667 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1668 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1669 }
1670
1671 }
1672
1673
1674 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1675 if (throwable == NULL) {
1676 THROW_0(vmSymbols::java_lang_NullPointerException());
1677 }
1678 objArrayOop chunk = objArrayOop(backtrace(throwable));
1679 int depth = 0;
1680 if (chunk != NULL) {
1681 // Iterate over chunks and count full ones
1682 while (true) {
1683 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1684 if (next == NULL) break;
1685 depth += trace_chunk_size;
1686 chunk = next;
1687 }
1688 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1689 // Count element in remaining partial 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 for (int i = 0; i < methods->length(); i++) {
1694 if (methods->obj_at(i) == NULL) break;
1695 depth++;
1696 }
1697 }
1698 return depth;
1699 }
1700
1701
1702 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1703 if (throwable == NULL) {
1704 THROW_0(vmSymbols::java_lang_NullPointerException());
1705 }
1706 if (index < 0) {
1707 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1708 }
1709 // Compute how many chunks to skip and index into actual chunk
1710 objArrayOop chunk = objArrayOop(backtrace(throwable));
1711 int skip_chunks = index / trace_chunk_size;
1712 int chunk_index = index % trace_chunk_size;
1713 while (chunk != NULL && skip_chunks > 0) {
1714 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1715 skip_chunks--;
1716 }
1717 if (chunk == NULL) {
1718 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1719 }
1720 // Get method,bci from chunk
1721 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1722 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1723 assert(methods != NULL && bcis != NULL, "sanity check");
1724 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index)));
1725 int bci = bcis->ushort_at(chunk_index);
1726 // Chunk can be partial full
1727 if (method.is_null()) {
1728 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1729 }
1730
1731 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1732 return element;
1733 }
1734
1735 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1736 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1737 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1738
1739 // Allocate java.lang.StackTraceElement instance
1740 klassOop k = SystemDictionary::StackTraceElement_klass();
1741 assert(k != NULL, "must be loaded in 1.4+");
1742 instanceKlassHandle ik (THREAD, k);
1743 if (ik->should_be_initialized()) {
1744 ik->initialize(CHECK_0);
1745 }
1746
1747 Handle element = ik->allocate_instance_handle(CHECK_0);
1748 // Fill in class name
1749 ResourceMark rm(THREAD);
1750 const char* str = instanceKlass::cast(method->method_holder())->external_name();
1751 oop classname = StringTable::intern((char*) str, CHECK_0);
1752 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1753 // Fill in method name
1754 oop methodname = StringTable::intern(method->name(), CHECK_0);
1755 java_lang_StackTraceElement::set_methodName(element(), methodname);
1756 // Fill in source file name
1757 Symbol* source = instanceKlass::cast(method->method_holder())->source_file_name();
1758 if (ShowHiddenFrames && source == NULL)
1759 source = vmSymbols::unknown_class_name();
1760 oop filename = StringTable::intern(source, CHECK_0);
1761 java_lang_StackTraceElement::set_fileName(element(), filename);
1762 // File in source line number
1763 int line_number;
1764 if (method->is_native()) {
1765 // Negative value different from -1 below, enabling Java code in
1766 // class java.lang.StackTraceElement to distinguish "native" from
1767 // "no LineNumberTable".
1768 line_number = -2;
1769 } else {
1770 // Returns -1 if no LineNumberTable, and otherwise actual line number
1771 line_number = method->line_number_from_bci(bci);
1772 if (line_number == -1 && ShowHiddenFrames) {
1773 line_number = bci + 1000000;
1774 }
1775 }
1776 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1777
1778 return element();
1779 }
1780
1781
1782 void java_lang_reflect_AccessibleObject::compute_offsets() {
1783 klassOop k = SystemDictionary::reflect_AccessibleObject_klass();
1784 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1785 }
1786
1787 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1788 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1789 return (jboolean) reflect->bool_field(override_offset);
1790 }
1791
1792 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1793 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1794 reflect->bool_field_put(override_offset, (int) value);
1795 }
1796
1797 void java_lang_reflect_Method::compute_offsets() {
1798 klassOop k = SystemDictionary::reflect_Method_klass();
1799 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1800 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1801 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1802 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1803 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1804 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1805 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1806 // The generic signature and annotations fields are only present in 1.5
1807 signature_offset = -1;
1808 annotations_offset = -1;
1809 parameter_annotations_offset = -1;
1810 annotation_default_offset = -1;
1811 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1812 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1813 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1814 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1815 }
1816
1817 Handle java_lang_reflect_Method::create(TRAPS) {
1818 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1819 klassOop klass = SystemDictionary::reflect_Method_klass();
1820 // This class is eagerly initialized during VM initialization, since we keep a refence
1821 // to one of the methods
1822 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized");
1823 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1824 }
1825
1826 oop java_lang_reflect_Method::clazz(oop reflect) {
1827 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1828 return reflect->obj_field(clazz_offset);
1829 }
1830
1831 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1832 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1833 reflect->obj_field_put(clazz_offset, value);
1834 }
1835
1836 int java_lang_reflect_Method::slot(oop reflect) {
1837 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1838 return reflect->int_field(slot_offset);
1839 }
1840
1841 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1842 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1843 reflect->int_field_put(slot_offset, value);
1844 }
1845
1846 oop java_lang_reflect_Method::name(oop method) {
1847 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1848 return method->obj_field(name_offset);
1849 }
1850
1851 void java_lang_reflect_Method::set_name(oop method, oop value) {
1852 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1853 method->obj_field_put(name_offset, value);
1854 }
1855
1856 oop java_lang_reflect_Method::return_type(oop method) {
1857 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1858 return method->obj_field(returnType_offset);
1859 }
1860
1861 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1862 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1863 method->obj_field_put(returnType_offset, value);
1864 }
1865
1866 oop java_lang_reflect_Method::parameter_types(oop method) {
1867 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1868 return method->obj_field(parameterTypes_offset);
1869 }
1870
1871 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1872 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1873 method->obj_field_put(parameterTypes_offset, value);
1874 }
1875
1876 oop java_lang_reflect_Method::exception_types(oop method) {
1877 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1878 return method->obj_field(exceptionTypes_offset);
1879 }
1880
1881 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1882 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1883 method->obj_field_put(exceptionTypes_offset, value);
1884 }
1885
1886 int java_lang_reflect_Method::modifiers(oop method) {
1887 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1888 return method->int_field(modifiers_offset);
1889 }
1890
1891 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1892 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1893 method->int_field_put(modifiers_offset, value);
1894 }
1895
1896 bool java_lang_reflect_Method::has_signature_field() {
1897 return (signature_offset >= 0);
1898 }
1899
1900 oop java_lang_reflect_Method::signature(oop method) {
1901 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1902 assert(has_signature_field(), "signature field must be present");
1903 return method->obj_field(signature_offset);
1904 }
1905
1906 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1907 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1908 assert(has_signature_field(), "signature field must be present");
1909 method->obj_field_put(signature_offset, value);
1910 }
1911
1912 bool java_lang_reflect_Method::has_annotations_field() {
1913 return (annotations_offset >= 0);
1914 }
1915
1916 oop java_lang_reflect_Method::annotations(oop method) {
1917 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1918 assert(has_annotations_field(), "annotations field must be present");
1919 return method->obj_field(annotations_offset);
1920 }
1921
1922 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1923 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1924 assert(has_annotations_field(), "annotations field must be present");
1925 method->obj_field_put(annotations_offset, value);
1926 }
1927
1928 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1929 return (parameter_annotations_offset >= 0);
1930 }
1931
1932 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1933 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1934 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1935 return method->obj_field(parameter_annotations_offset);
1936 }
1937
1938 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1939 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1940 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1941 method->obj_field_put(parameter_annotations_offset, value);
1942 }
1943
1944 bool java_lang_reflect_Method::has_annotation_default_field() {
1945 return (annotation_default_offset >= 0);
1946 }
1947
1948 oop java_lang_reflect_Method::annotation_default(oop method) {
1949 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1950 assert(has_annotation_default_field(), "annotation default field must be present");
1951 return method->obj_field(annotation_default_offset);
1952 }
1953
1954 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1955 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1956 assert(has_annotation_default_field(), "annotation default field must be present");
1957 method->obj_field_put(annotation_default_offset, value);
1958 }
1959
1960 void java_lang_reflect_Constructor::compute_offsets() {
1961 klassOop k = SystemDictionary::reflect_Constructor_klass();
1962 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1963 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1964 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1965 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1966 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1967 // The generic signature and annotations fields are only present in 1.5
1968 signature_offset = -1;
1969 annotations_offset = -1;
1970 parameter_annotations_offset = -1;
1971 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1972 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1973 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1974 }
1975
1976 Handle java_lang_reflect_Constructor::create(TRAPS) {
1977 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1978 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1979 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1980 instanceKlassHandle klass (THREAD, k);
1981 // Ensure it is initialized
1982 klass->initialize(CHECK_NH);
1983 return klass->allocate_instance_handle(CHECK_NH);
1984 }
1985
1986 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1987 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1988 return reflect->obj_field(clazz_offset);
1989 }
1990
1991 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1992 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1993 reflect->obj_field_put(clazz_offset, value);
1994 }
1995
1996 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1997 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1998 return constructor->obj_field(parameterTypes_offset);
1999 }
2000
2001 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2002 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2003 constructor->obj_field_put(parameterTypes_offset, value);
2004 }
2005
2006 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2007 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2008 return constructor->obj_field(exceptionTypes_offset);
2009 }
2010
2011 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2012 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2013 constructor->obj_field_put(exceptionTypes_offset, value);
2014 }
2015
2016 int java_lang_reflect_Constructor::slot(oop reflect) {
2017 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2018 return reflect->int_field(slot_offset);
2019 }
2020
2021 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2022 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2023 reflect->int_field_put(slot_offset, value);
2024 }
2025
2026 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2028 return constructor->int_field(modifiers_offset);
2029 }
2030
2031 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2032 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2033 constructor->int_field_put(modifiers_offset, value);
2034 }
2035
2036 bool java_lang_reflect_Constructor::has_signature_field() {
2037 return (signature_offset >= 0);
2038 }
2039
2040 oop java_lang_reflect_Constructor::signature(oop constructor) {
2041 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2042 assert(has_signature_field(), "signature field must be present");
2043 return constructor->obj_field(signature_offset);
2044 }
2045
2046 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2047 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2048 assert(has_signature_field(), "signature field must be present");
2049 constructor->obj_field_put(signature_offset, value);
2050 }
2051
2052 bool java_lang_reflect_Constructor::has_annotations_field() {
2053 return (annotations_offset >= 0);
2054 }
2055
2056 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2057 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2058 assert(has_annotations_field(), "annotations field must be present");
2059 return constructor->obj_field(annotations_offset);
2060 }
2061
2062 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2063 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2064 assert(has_annotations_field(), "annotations field must be present");
2065 constructor->obj_field_put(annotations_offset, value);
2066 }
2067
2068 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2069 return (parameter_annotations_offset >= 0);
2070 }
2071
2072 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2073 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2074 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2075 return method->obj_field(parameter_annotations_offset);
2076 }
2077
2078 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2079 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2080 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2081 method->obj_field_put(parameter_annotations_offset, value);
2082 }
2083
2084 void java_lang_reflect_Field::compute_offsets() {
2085 klassOop k = SystemDictionary::reflect_Field_klass();
2086 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2087 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2088 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2089 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2090 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2091 // The generic signature and annotations fields are only present in 1.5
2092 signature_offset = -1;
2093 annotations_offset = -1;
2094 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2095 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2096 }
2097
2098 Handle java_lang_reflect_Field::create(TRAPS) {
2099 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2100 Symbol* name = vmSymbols::java_lang_reflect_Field();
2101 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2102 instanceKlassHandle klass (THREAD, k);
2103 // Ensure it is initialized
2104 klass->initialize(CHECK_NH);
2105 return klass->allocate_instance_handle(CHECK_NH);
2106 }
2107
2108 oop java_lang_reflect_Field::clazz(oop reflect) {
2109 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2110 return reflect->obj_field(clazz_offset);
2111 }
2112
2113 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2114 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2115 reflect->obj_field_put(clazz_offset, value);
2116 }
2117
2118 oop java_lang_reflect_Field::name(oop field) {
2119 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2120 return field->obj_field(name_offset);
2121 }
2122
2123 void java_lang_reflect_Field::set_name(oop field, oop value) {
2124 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2125 field->obj_field_put(name_offset, value);
2126 }
2127
2128 oop java_lang_reflect_Field::type(oop field) {
2129 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2130 return field->obj_field(type_offset);
2131 }
2132
2133 void java_lang_reflect_Field::set_type(oop field, oop value) {
2134 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2135 field->obj_field_put(type_offset, value);
2136 }
2137
2138 int java_lang_reflect_Field::slot(oop reflect) {
2139 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2140 return reflect->int_field(slot_offset);
2141 }
2142
2143 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2144 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2145 reflect->int_field_put(slot_offset, value);
2146 }
2147
2148 int java_lang_reflect_Field::modifiers(oop field) {
2149 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2150 return field->int_field(modifiers_offset);
2151 }
2152
2153 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2154 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2155 field->int_field_put(modifiers_offset, value);
2156 }
2157
2158 bool java_lang_reflect_Field::has_signature_field() {
2159 return (signature_offset >= 0);
2160 }
2161
2162 oop java_lang_reflect_Field::signature(oop field) {
2163 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2164 assert(has_signature_field(), "signature field must be present");
2165 return field->obj_field(signature_offset);
2166 }
2167
2168 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2169 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2170 assert(has_signature_field(), "signature field must be present");
2171 field->obj_field_put(signature_offset, value);
2172 }
2173
2174 bool java_lang_reflect_Field::has_annotations_field() {
2175 return (annotations_offset >= 0);
2176 }
2177
2178 oop java_lang_reflect_Field::annotations(oop field) {
2179 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2180 assert(has_annotations_field(), "annotations field must be present");
2181 return field->obj_field(annotations_offset);
2182 }
2183
2184 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2185 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2186 assert(has_annotations_field(), "annotations field must be present");
2187 field->obj_field_put(annotations_offset, value);
2188 }
2189
2190
2191 void sun_reflect_ConstantPool::compute_offsets() {
2192 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2193 // This null test can be removed post beta
2194 if (k != NULL) {
2195 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature());
2196 }
2197 }
2198
2199
2200 Handle sun_reflect_ConstantPool::create(TRAPS) {
2201 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2202 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2203 instanceKlassHandle klass (THREAD, k);
2204 // Ensure it is initialized
2205 klass->initialize(CHECK_NH);
2206 return klass->allocate_instance_handle(CHECK_NH);
2207 }
2208
2209
2210 oop sun_reflect_ConstantPool::cp_oop(oop reflect) {
2211 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2212 return reflect->obj_field(_cp_oop_offset);
2213 }
2214
2215
2216 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) {
2217 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2218 reflect->obj_field_put(_cp_oop_offset, value);
2219 }
2220
2221 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2222 klassOop k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2223 // This null test can be removed post beta
2224 if (k != NULL) {
2225 compute_offset(_base_offset, k,
2226 vmSymbols::base_name(), vmSymbols::object_signature());
2227 }
2228 }
2229
2230 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2231 klassOop k = SystemDictionary::box_klass(type);
2232 if (k == NULL) return NULL;
2233 instanceKlassHandle h (THREAD, k);
2234 if (!h->is_initialized()) h->initialize(CHECK_0);
2235 return h->allocate_instance(THREAD);
2236 }
2237
2238
2239 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2240 oop box = initialize_and_allocate(type, CHECK_0);
2241 if (box == NULL) return NULL;
2242 switch (type) {
2243 case T_BOOLEAN:
2244 box->bool_field_put(value_offset, value->z);
2245 break;
2246 case T_CHAR:
2247 box->char_field_put(value_offset, value->c);
2248 break;
2249 case T_FLOAT:
2250 box->float_field_put(value_offset, value->f);
2251 break;
2252 case T_DOUBLE:
2253 box->double_field_put(long_value_offset, value->d);
2254 break;
2255 case T_BYTE:
2256 box->byte_field_put(value_offset, value->b);
2257 break;
2258 case T_SHORT:
2259 box->short_field_put(value_offset, value->s);
2260 break;
2261 case T_INT:
2262 box->int_field_put(value_offset, value->i);
2263 break;
2264 case T_LONG:
2265 box->long_field_put(long_value_offset, value->j);
2266 break;
2267 default:
2268 return NULL;
2269 }
2270 return box;
2271 }
2272
2273
2274 BasicType java_lang_boxing_object::basic_type(oop box) {
2275 if (box == NULL) return T_ILLEGAL;
2276 BasicType type = SystemDictionary::box_klass_type(box->klass());
2277 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2278 return T_ILLEGAL;
2279 return type;
2280 }
2281
2282
2283 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2284 BasicType type = SystemDictionary::box_klass_type(box->klass());
2285 switch (type) {
2286 case T_BOOLEAN:
2287 value->z = box->bool_field(value_offset);
2288 break;
2289 case T_CHAR:
2290 value->c = box->char_field(value_offset);
2291 break;
2292 case T_FLOAT:
2293 value->f = box->float_field(value_offset);
2294 break;
2295 case T_DOUBLE:
2296 value->d = box->double_field(long_value_offset);
2297 break;
2298 case T_BYTE:
2299 value->b = box->byte_field(value_offset);
2300 break;
2301 case T_SHORT:
2302 value->s = box->short_field(value_offset);
2303 break;
2304 case T_INT:
2305 value->i = box->int_field(value_offset);
2306 break;
2307 case T_LONG:
2308 value->j = box->long_field(long_value_offset);
2309 break;
2310 default:
2311 return T_ILLEGAL;
2312 } // end switch
2313 return type;
2314 }
2315
2316
2317 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2318 BasicType type = SystemDictionary::box_klass_type(box->klass());
2319 switch (type) {
2320 case T_BOOLEAN:
2321 box->bool_field_put(value_offset, value->z);
2322 break;
2323 case T_CHAR:
2324 box->char_field_put(value_offset, value->c);
2325 break;
2326 case T_FLOAT:
2327 box->float_field_put(value_offset, value->f);
2328 break;
2329 case T_DOUBLE:
2330 box->double_field_put(long_value_offset, value->d);
2331 break;
2332 case T_BYTE:
2333 box->byte_field_put(value_offset, value->b);
2334 break;
2335 case T_SHORT:
2336 box->short_field_put(value_offset, value->s);
2337 break;
2338 case T_INT:
2339 box->int_field_put(value_offset, value->i);
2340 break;
2341 case T_LONG:
2342 box->long_field_put(long_value_offset, value->j);
2343 break;
2344 default:
2345 return T_ILLEGAL;
2346 } // end switch
2347 return type;
2348 }
2349
2350
2351 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2352 switch (type) {
2353 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2354 case T_CHAR: st->print("%d", value->c); break;
2355 case T_BYTE: st->print("%d", value->b); break;
2356 case T_SHORT: st->print("%d", value->s); break;
2357 case T_INT: st->print("%d", value->i); break;
2358 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2359 case T_FLOAT: st->print("%f", value->f); break;
2360 case T_DOUBLE: st->print("%lf", value->d); break;
2361 default: st->print("type %d?", type); break;
2362 }
2363 }
2364
2365
2366 // Support for java_lang_ref_Reference
2367 oop java_lang_ref_Reference::pending_list_lock() {
2368 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2369 address addr = ik->static_field_addr(static_lock_offset);
2370 if (UseCompressedOops) {
2371 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2372 } else {
2373 return oopDesc::load_decode_heap_oop((oop*)addr);
2374 }
2375 }
2376
2377 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2378 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2379 address addr = ik->static_field_addr(static_pending_offset);
2380 // XXX This might not be HeapWord aligned, almost rather be char *.
2381 return (HeapWord*)addr;
2382 }
2383
2384 oop java_lang_ref_Reference::pending_list() {
2385 char *addr = (char *)pending_list_addr();
2386 if (UseCompressedOops) {
2387 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2388 } else {
2389 return oopDesc::load_decode_heap_oop((oop*)addr);
2390 }
2391 }
2392
2393
2394 // Support for java_lang_ref_SoftReference
2395
2396 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2397 return ref->long_field(timestamp_offset);
2398 }
2399
2400 jlong java_lang_ref_SoftReference::clock() {
2401 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2402 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2403 return *offset;
2404 }
2405
2406 void java_lang_ref_SoftReference::set_clock(jlong value) {
2407 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2408 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2409 *offset = value;
2410 }
2411
2412 // Support for java_lang_invoke_DirectMethodHandle
2413
2414 int java_lang_invoke_DirectMethodHandle::_member_offset;
2415
2416 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
2417 oop member_name = NULL;
2418 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
2419 assert(is_dmh, "a DirectMethodHandle oop is expected");
2420 if (is_dmh) {
2421 member_name = dmh->obj_field(member_offset_in_bytes());
2422 }
2423 return member_name;
2424 }
2425
2426 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2427 klassOop klass_oop = SystemDictionary::DirectMethodHandle_klass();
2428 if (klass_oop != NULL && EnableInvokeDynamic) {
2429 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2430 }
2431 }
2432
2433 // Support for java_lang_invoke_MethodHandle
2434
2435 int java_lang_invoke_MethodHandle::_type_offset;
2436 int java_lang_invoke_MethodHandle::_form_offset;
2437
2438 int java_lang_invoke_MemberName::_clazz_offset;
2439 int java_lang_invoke_MemberName::_name_offset;
2440 int java_lang_invoke_MemberName::_type_offset;
2441 int java_lang_invoke_MemberName::_flags_offset;
2442 int java_lang_invoke_MemberName::_vmtarget_offset;
2443 int java_lang_invoke_MemberName::_vmindex_offset;
2444
2445 int java_lang_invoke_LambdaForm::_vmentry_offset;
2446
2447 void java_lang_invoke_MethodHandle::compute_offsets() {
2448 klassOop klass_oop = SystemDictionary::MethodHandle_klass();
2449 if (klass_oop != NULL && EnableInvokeDynamic) {
2450 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2451 compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2452 if (_form_offset == 0) {
2453 EnableInvokeDynamic = false;
2454 }
2455 }
2456 }
2457
2458 void java_lang_invoke_MemberName::compute_offsets() {
2459 klassOop klass_oop = SystemDictionary::MemberName_klass();
2460 if (klass_oop != NULL && EnableInvokeDynamic) {
2461 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2462 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2463 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2464 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2465 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2466 }
2467 }
2468
2469 void java_lang_invoke_LambdaForm::compute_offsets() {
2470 klassOop klass_oop = SystemDictionary::LambdaForm_klass();
2471 if (klass_oop != NULL && EnableInvokeDynamic) {
2472 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2473 }
2474 }
2475
2476 oop java_lang_invoke_MethodHandle::type(oop mh) {
2477 return mh->obj_field(_type_offset);
2478 }
2479
2480 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2481 mh->obj_field_put(_type_offset, mtype);
2482 }
2483
2484 oop java_lang_invoke_MethodHandle::form(oop mh) {
2485 assert(_form_offset != 0, "");
2486 return mh->obj_field(_form_offset);
2487 }
2488
2489 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2490 assert(_form_offset != 0, "");
2491 mh->obj_field_put(_form_offset, lform);
2492 }
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 // Can be executed on VM thread only
2542 void java_lang_invoke_MemberName::adjust_vmtarget(oop mname, oop ref) {
2543 assert((is_instance(mname) && (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0), "wrong type");
2544 assert(Thread::current()->is_VM_thread(), "not VM thread");
2545 mname->address_field_put(_vmtarget_offset, (address)ref);
2546 }
2547
2548 void java_lang_invoke_MemberName::set_vmtarget(oop mname, oop ref) {
2549 assert(is_instance(mname), "wrong type");
2550 #ifdef ASSERT
2551 // check the type of the vmtarget
2552 if (ref != NULL) {
2553 switch (flags(mname) & (MN_IS_METHOD |
2554 MN_IS_CONSTRUCTOR |
2555 MN_IS_FIELD)) {
2556 case MN_IS_METHOD:
2557 case MN_IS_CONSTRUCTOR:
2558 assert(ref->is_method(), "should be a method");
2559 break;
2560 case MN_IS_FIELD:
2561 assert(ref->is_klass(), "should be a class");
2562 break;
2563 default:
2564 ShouldNotReachHere();
2565 }
2566 }
2567 #endif //ASSERT
2568 mname->obj_field_put(_vmtarget_offset, ref);
2569 }
2570
2571 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2572 assert(is_instance(mname), "wrong type");
2573 return (intptr_t) mname->address_field(_vmindex_offset);
2574 }
2575
2576 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2577 assert(is_instance(mname), "wrong type");
2578 mname->address_field_put(_vmindex_offset, (address) index);
2579 }
2580
2581 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2582 assert(is_instance(lform), "wrong type");
2583 return lform->obj_field(_vmentry_offset);
2584 }
2585
2586
2587 // Support for java_lang_invoke_MethodType
2588
2589 int java_lang_invoke_MethodType::_rtype_offset;
2590 int java_lang_invoke_MethodType::_ptypes_offset;
2591
2592 void java_lang_invoke_MethodType::compute_offsets() {
2593 klassOop k = SystemDictionary::MethodType_klass();
2594 if (k != NULL) {
2595 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2596 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2597 }
2598 }
2599
2600 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2601 st->print("(");
2602 objArrayOop pts = ptypes(mt);
2603 for (int i = 0, limit = pts->length(); i < limit; i++) {
2604 java_lang_Class::print_signature(pts->obj_at(i), st);
2605 }
2606 st->print(")");
2607 java_lang_Class::print_signature(rtype(mt), st);
2608 }
2609
2610 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2611 ResourceMark rm;
2612 stringStream buffer(128);
2613 print_signature(mt, &buffer);
2614 const char* sigstr = buffer.base();
2615 int siglen = (int) buffer.size();
2616 Symbol *name;
2617 if (!intern_if_not_found) {
2618 name = SymbolTable::probe(sigstr, siglen);
2619 } else {
2620 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2621 }
2622 return name;
2623 }
2624
2625 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2626 if (mt1 == mt2)
2627 return true;
2628 if (rtype(mt1) != rtype(mt2))
2629 return false;
2630 if (ptype_count(mt1) != ptype_count(mt2))
2631 return false;
2632 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2633 if (ptype(mt1, i) != ptype(mt2, i))
2634 return false;
2635 }
2636 return true;
2637 }
2638
2639 oop java_lang_invoke_MethodType::rtype(oop mt) {
2640 assert(is_instance(mt), "must be a MethodType");
2641 return mt->obj_field(_rtype_offset);
2642 }
2643
2644 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2645 assert(is_instance(mt), "must be a MethodType");
2646 return (objArrayOop) mt->obj_field(_ptypes_offset);
2647 }
2648
2649 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2650 return ptypes(mt)->obj_at(idx);
2651 }
2652
2653 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2654 return ptypes(mt)->length();
2655 }
2656
2657 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2658 objArrayOop pts = ptypes(mt);
2659 int count = pts->length();
2660 int slots = 0;
2661 for (int i = 0; i < count; i++) {
2662 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2663 slots += type2size[bt];
2664 }
2665 return slots;
2666 }
2667
2668 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2669 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2670 return type2size[bt];
2671 }
2672
2673
2674 // Support for java_lang_invoke_CallSite
2675
2676 int java_lang_invoke_CallSite::_target_offset;
2677
2678 void java_lang_invoke_CallSite::compute_offsets() {
2679 if (!EnableInvokeDynamic) return;
2680 klassOop k = SystemDictionary::CallSite_klass();
2681 if (k != NULL) {
2682 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2683 }
2684 }
2685
2686
2687 // Support for java_security_AccessControlContext
2688
2689 int java_security_AccessControlContext::_context_offset = 0;
2690 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2691 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2692 int java_security_AccessControlContext::_isAuthorized_offset = -1;
2693
2694 void java_security_AccessControlContext::compute_offsets() {
2695 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2696 fieldDescriptor fd;
2697 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2698
2699 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2700 fatal("Invalid layout of java.security.AccessControlContext");
2701 }
2702 _context_offset = fd.offset();
2703
2704 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2705 fatal("Invalid layout of java.security.AccessControlContext");
2706 }
2707 _privilegedContext_offset = fd.offset();
2708
2709 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2710 fatal("Invalid layout of java.security.AccessControlContext");
2711 }
2712 _isPrivileged_offset = fd.offset();
2713
2714
2715 // The offset may not be present for bootstrapping with older JDK.
2716 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
2717 _isAuthorized_offset = fd.offset();
2718 }
2719 }
2720
2721
2722 bool java_security_AccessControlContext::is_authorized(Handle context) {
2723 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
2724 assert(_isAuthorized_offset != -1, "should be set");
2725 return context->bool_field(_isAuthorized_offset) != 0;
2726 }
2727
2728
2729 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2730 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2731 // Ensure klass is initialized
2732 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2733 // Allocate result
2734 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2735 // Fill in values
2736 result->obj_field_put(_context_offset, context());
2737 result->obj_field_put(_privilegedContext_offset, privileged_context());
2738 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2739 // whitelist AccessControlContexts created by the JVM if present
2740 if (_isAuthorized_offset != -1) {
2741 result->bool_field_put(_isAuthorized_offset, true);
2742 }
2743 return result;
2744 }
2745
2746
2747 // Support for java_lang_ClassLoader
2748 bool java_lang_ClassLoader::offsets_computed = false;
2749 int java_lang_ClassLoader::parallelCapable_offset = -1;
2750
2751 void java_lang_ClassLoader::compute_offsets() {
2752 assert(!offsets_computed, "offsets should be initialized only once");
2753 offsets_computed = true;
2754
2755 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2756 klassOop k1 = SystemDictionary::ClassLoader_klass();
2757 compute_optional_offset(parallelCapable_offset,
2758 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2759 }
2760
2761 oop java_lang_ClassLoader::parent(oop loader) {
2762 assert(is_instance(loader), "loader must be oop");
2763 return loader->obj_field(parent_offset);
2764 }
2765
2766 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
2767 assert(is_instance(loader), "loader must be oop");
2768 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
2769 oop acl = loader;
2770 debug_only(jint loop_count = 0);
2771 // This loop taken verbatim from ClassLoader.java:
2772 do {
2773 acl = parent(acl);
2774 if (cl == acl) {
2775 return true;
2776 }
2777 assert(++loop_count > 0, "loop_count overflow");
2778 } while (acl != NULL);
2779 return false;
2780 }
2781
2782
2783 // For class loader classes, parallelCapable defined
2784 // based on non-null field
2785 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2786 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2787 if (!JDK_Version::is_gte_jdk17x_version()
2788 || parallelCapable_offset == -1) {
2789 // Default for backward compatibility is false
2790 return false;
2791 }
2792 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2793 }
2794
2795 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2796 // Fix for 4474172; see evaluation for more details
2797 loader = non_reflection_class_loader(loader);
2798
2799 oop cl = SystemDictionary::java_system_loader();
2800 while(cl != NULL) {
2801 if (cl == loader) return true;
2802 cl = parent(cl);
2803 }
2804 return false;
2805 }
2806
2807 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2808 if (loader != NULL) {
2809 // See whether this is one of the class loaders associated with
2810 // the generated bytecodes for reflection, and if so, "magically"
2811 // delegate to its parent to prevent class loading from occurring
2812 // in places where applications using reflection didn't expect it.
2813 klassOop delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2814 // This might be null in non-1.4 JDKs
2815 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2816 return parent(loader);
2817 }
2818 }
2819 return loader;
2820 }
2821
2822
2823 // Support for java_lang_System
2824 int java_lang_System::in_offset_in_bytes() {
2825 return (instanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2826 }
2827
2828
2829 int java_lang_System::out_offset_in_bytes() {
2830 return (instanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2831 }
2832
2833
2834 int java_lang_System::err_offset_in_bytes() {
2835 return (instanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2836 }
2837
2838 bool java_lang_System::has_security_manager() {
2839 instanceKlass* ik = instanceKlass::cast(SystemDictionary::System_klass());
2840 address addr = ik->static_field_addr(static_security_offset);
2841 if (UseCompressedOops) {
2842 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
2843 } else {
2844 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
2845 }
2846 }
2847
2848
2849 int java_lang_Class::_klass_offset;
2850 int java_lang_Class::_array_klass_offset;
2851 int java_lang_Class::_resolved_constructor_offset;
2852 int java_lang_Class::_oop_size_offset;
2853 int java_lang_Class::_static_oop_field_count_offset;
2854 int java_lang_Class::_class_loader_offset;
2855 int java_lang_Throwable::backtrace_offset;
2856 int java_lang_Throwable::detailMessage_offset;
2857 int java_lang_Throwable::cause_offset;
2858 int java_lang_Throwable::stackTrace_offset;
2859 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2860 int java_lang_reflect_AccessibleObject::override_offset;
2861 int java_lang_reflect_Method::clazz_offset;
2862 int java_lang_reflect_Method::name_offset;
2863 int java_lang_reflect_Method::returnType_offset;
2864 int java_lang_reflect_Method::parameterTypes_offset;
2865 int java_lang_reflect_Method::exceptionTypes_offset;
2866 int java_lang_reflect_Method::slot_offset;
2867 int java_lang_reflect_Method::modifiers_offset;
2868 int java_lang_reflect_Method::signature_offset;
2869 int java_lang_reflect_Method::annotations_offset;
2870 int java_lang_reflect_Method::parameter_annotations_offset;
2871 int java_lang_reflect_Method::annotation_default_offset;
2872 int java_lang_reflect_Constructor::clazz_offset;
2873 int java_lang_reflect_Constructor::parameterTypes_offset;
2874 int java_lang_reflect_Constructor::exceptionTypes_offset;
2875 int java_lang_reflect_Constructor::slot_offset;
2876 int java_lang_reflect_Constructor::modifiers_offset;
2877 int java_lang_reflect_Constructor::signature_offset;
2878 int java_lang_reflect_Constructor::annotations_offset;
2879 int java_lang_reflect_Constructor::parameter_annotations_offset;
2880 int java_lang_reflect_Field::clazz_offset;
2881 int java_lang_reflect_Field::name_offset;
2882 int java_lang_reflect_Field::type_offset;
2883 int java_lang_reflect_Field::slot_offset;
2884 int java_lang_reflect_Field::modifiers_offset;
2885 int java_lang_reflect_Field::signature_offset;
2886 int java_lang_reflect_Field::annotations_offset;
2887 int java_lang_boxing_object::value_offset;
2888 int java_lang_boxing_object::long_value_offset;
2889 int java_lang_ref_Reference::referent_offset;
2890 int java_lang_ref_Reference::queue_offset;
2891 int java_lang_ref_Reference::next_offset;
2892 int java_lang_ref_Reference::discovered_offset;
2893 int java_lang_ref_Reference::static_lock_offset;
2894 int java_lang_ref_Reference::static_pending_offset;
2895 int java_lang_ref_Reference::number_of_fake_oop_fields;
2896 int java_lang_ref_SoftReference::timestamp_offset;
2897 int java_lang_ref_SoftReference::static_clock_offset;
2898 int java_lang_ClassLoader::parent_offset;
2899 int java_lang_System::static_in_offset;
2900 int java_lang_System::static_out_offset;
2901 int java_lang_System::static_err_offset;
2902 int java_lang_System::static_security_offset;
2903 int java_lang_StackTraceElement::declaringClass_offset;
2904 int java_lang_StackTraceElement::methodName_offset;
2905 int java_lang_StackTraceElement::fileName_offset;
2906 int java_lang_StackTraceElement::lineNumber_offset;
2907 int java_lang_AssertionStatusDirectives::classes_offset;
2908 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2909 int java_lang_AssertionStatusDirectives::packages_offset;
2910 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2911 int java_lang_AssertionStatusDirectives::deflt_offset;
2912 int java_nio_Buffer::_limit_offset;
2913 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2914 int sun_reflect_ConstantPool::_cp_oop_offset;
2915 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2916
2917
2918 // Support for java_lang_StackTraceElement
2919
2920 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2921 element->obj_field_put(fileName_offset, value);
2922 }
2923
2924 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2925 element->obj_field_put(declaringClass_offset, value);
2926 }
2927
2928 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2929 element->obj_field_put(methodName_offset, value);
2930 }
2931
2932 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2933 element->int_field_put(lineNumber_offset, value);
2934 }
2935
2936
2937 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2938
2939 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2940 o->obj_field_put(classes_offset, val);
2941 }
2942
2943 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2944 o->obj_field_put(classEnabled_offset, val);
2945 }
2946
2947 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2948 o->obj_field_put(packages_offset, val);
2949 }
2950
2951 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2952 o->obj_field_put(packageEnabled_offset, val);
2953 }
2954
2955 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2956 o->bool_field_put(deflt_offset, val);
2957 }
2958
2959
2960 // Support for intrinsification of java.nio.Buffer.checkIndex
2961 int java_nio_Buffer::limit_offset() {
2962 return _limit_offset;
2963 }
2964
2965
2966 void java_nio_Buffer::compute_offsets() {
2967 klassOop k = SystemDictionary::nio_Buffer_klass();
2968 assert(k != NULL, "must be loaded in 1.4+");
2969 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2970 }
2971
2972 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2973 if (_owner_offset != 0) return;
2974
2975 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
2976 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
2977 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass();
2978 compute_offset(_owner_offset, k,
2979 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
2980 }
2981
2982 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
2983 assert(_owner_offset != 0, "Must be initialized");
2984 return obj->obj_field(_owner_offset);
2985 }
2986
2987 // Compute hard-coded offsets
2988 // Invoked before SystemDictionary::initialize, so pre-loaded classes
2989 // are not available to determine the offset_of_static_fields.
2990 void JavaClasses::compute_hard_coded_offsets() {
2991 const int x = heapOopSize;
2992 const int header = instanceOopDesc::base_offset_in_bytes();
2993
2994 // Throwable Class
2995 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
2996 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
2997 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
2998 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
2999 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3000
3001 // java_lang_boxing_object
3002 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3003 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3004
3005 // java_lang_ref_Reference:
3006 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3007 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3008 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3009 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3010 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3011 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3012 // Artificial fields for java_lang_ref_Reference
3013 // The first field is for the discovered field added in 1.4
3014 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3015
3016 // java_lang_ref_SoftReference Class
3017 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3018 // Don't multiply static fields because they are always in wordSize units
3019 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3020
3021 // java_lang_ClassLoader
3022 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3023
3024 // java_lang_System
3025 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3026 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3027 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3028 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3029
3030 // java_lang_StackTraceElement
3031 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3032 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3033 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3034 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3035 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3036 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3037 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3038 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3039 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3040
3041 }
3042
3043
3044 // Compute non-hard-coded field offsets of all the classes in this file
3045 void JavaClasses::compute_offsets() {
3046 // java_lang_Class::compute_offsets was called earlier in bootstrap
3047 java_lang_ClassLoader::compute_offsets();
3048 java_lang_Thread::compute_offsets();
3049 java_lang_ThreadGroup::compute_offsets();
3050 if (EnableInvokeDynamic) {
3051 java_lang_invoke_MethodHandle::compute_offsets();
3052 java_lang_invoke_DirectMethodHandle::compute_offsets();
3053 java_lang_invoke_MemberName::compute_offsets();
3054 java_lang_invoke_LambdaForm::compute_offsets();
3055 java_lang_invoke_MethodType::compute_offsets();
3056 java_lang_invoke_CallSite::compute_offsets();
3057 }
3058 java_security_AccessControlContext::compute_offsets();
3059 // Initialize reflection classes. The layouts of these classes
3060 // changed with the new reflection implementation in JDK 1.4, and
3061 // since the Universe doesn't know what JDK version it is until this
3062 // point we defer computation of these offsets until now.
3063 java_lang_reflect_AccessibleObject::compute_offsets();
3064 java_lang_reflect_Method::compute_offsets();
3065 java_lang_reflect_Constructor::compute_offsets();
3066 java_lang_reflect_Field::compute_offsets();
3067 if (JDK_Version::is_gte_jdk14x_version()) {
3068 java_nio_Buffer::compute_offsets();
3069 }
3070 if (JDK_Version::is_gte_jdk15x_version()) {
3071 sun_reflect_ConstantPool::compute_offsets();
3072 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3073 }
3074
3075 // generated interpreter code wants to know about the offsets we just computed:
3076 AbstractAssembler::update_delayed_values();
3077 }
3078
3079 #ifndef PRODUCT
3080
3081 // These functions exist to assert the validity of hard-coded field offsets to guard
3082 // against changes in the class files
3083
3084 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3085 EXCEPTION_MARK;
3086 fieldDescriptor fd;
3087 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3088 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3089 instanceKlassHandle h_klass (THREAD, k);
3090 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3091 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3092 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3093 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3094 return false;
3095 }
3096 if (fd.is_static()) {
3097 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3098 return false;
3099 }
3100 if (fd.offset() == hardcoded_offset ) {
3101 return true;
3102 } else {
3103 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3104 klass_name, field_name, hardcoded_offset, fd.offset());
3105 return false;
3106 }
3107 }
3108
3109
3110 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3111 EXCEPTION_MARK;
3112 fieldDescriptor fd;
3113 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3114 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3115 instanceKlassHandle h_klass (THREAD, k);
3116 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3117 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3118 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3119 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3120 return false;
3121 }
3122 if (!fd.is_static()) {
3123 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3124 return false;
3125 }
3126 if (fd.offset() == hardcoded_offset + instanceMirrorKlass::offset_of_static_fields()) {
3127 return true;
3128 } else {
3129 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());
3130 return false;
3131 }
3132 }
3133
3134
3135 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, 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() || !fd.has_initial_value()) {
3148 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3149 return false;
3150 }
3151 if (!fd.initial_value_tag().is_int()) {
3152 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3153 return false;
3154 }
3155 jint field_value = fd.int_initial_value();
3156 if (field_value == hardcoded_constant) {
3157 return true;
3158 } else {
3159 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);
3160 return false;
3161 }
3162 }
3163
3164
3165 // Check the hard-coded field offsets of all the classes in this file
3166
3167 void JavaClasses::check_offsets() {
3168 bool valid = true;
3169
3170 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3171 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3172
3173 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3174 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3175
3176 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3177 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3178
3179 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3180 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3181
3182 // java.lang.String
3183
3184 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3185 if (java_lang_String::has_offset_field()) {
3186 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3187 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3188 }
3189 if (java_lang_String::has_hash_field()) {
3190 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3191 }
3192
3193 // java.lang.Class
3194
3195 // Fake fields
3196 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3197 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3198 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3199
3200 // java.lang.Throwable
3201
3202 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3203 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3204 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3205 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3206
3207 // Boxed primitive objects (java_lang_boxing_object)
3208
3209 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3210 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3211 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3212 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3213 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3214 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3215 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3216 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3217
3218 // java.lang.ClassLoader
3219
3220 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3221
3222 // java.lang.System
3223
3224 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3225 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3226 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3227 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
3228
3229 // java.lang.StackTraceElement
3230
3231 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3232 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3233 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3234 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3235
3236 // java.lang.ref.Reference
3237
3238 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3239 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3240 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3241 // Fake field
3242 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3243 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3244 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3245
3246 // java.lang.ref.SoftReference
3247
3248 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3249 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3250
3251 // java.lang.AssertionStatusDirectives
3252 //
3253 // The CheckAssertionStatusDirectives boolean can be removed from here and
3254 // globals.hpp after the AssertionStatusDirectives class has been integrated
3255 // into merlin "for some time." Without it, the vm will fail with early
3256 // merlin builds.
3257
3258 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3259 const char* nm = "java/lang/AssertionStatusDirectives";
3260 const char* sig = "[Ljava/lang/String;";
3261 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3262 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3263 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3264 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3265 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3266 }
3267
3268 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3269 }
3270
3271 #endif // PRODUCT
3272
3273 int InjectedField::compute_offset() {
3274 klassOop klass_oop = klass();
3275 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3276 if (!may_be_java && !fs.access_flags().is_internal()) {
3277 // Only look at injected fields
3278 continue;
3279 }
3280 if (fs.name() == name() && fs.signature() == signature()) {
3281 return fs.offset();
3282 }
3283 }
3284 ResourceMark rm;
3285 tty->print_cr("Invalid layout of %s at %s/%s%s", instanceKlass::cast(klass_oop)->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : "");
3286 #ifndef PRODUCT
3287 klass_oop->print();
3288 tty->print_cr("all fields:");
3289 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3290 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3291 }
3292 #endif //PRODUCT
3293 fatal("Invalid layout of preloaded class");
3294 return -1;
3295 }
3296
3297 void javaClasses_init() {
3298 JavaClasses::compute_offsets();
3299 JavaClasses::check_offsets();
3300 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3301 }
3302