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 "prims/jvmtiRedefineClassesTrace.hpp"
46 #include "runtime/fieldDescriptor.hpp"
47 #include "runtime/handles.inline.hpp"
48 #include "runtime/interfaceSupport.hpp"
49 #include "runtime/java.hpp"
50 #include "runtime/javaCalls.hpp"
51 #include "runtime/safepoint.hpp"
52 #include "runtime/vframe.hpp"
53 #include "utilities/preserveException.hpp"
54 #ifdef TARGET_OS_FAMILY_linux
55 # include "thread_linux.inline.hpp"
56 #endif
57 #ifdef TARGET_OS_FAMILY_solaris
58 # include "thread_solaris.inline.hpp"
59 #endif
60 #ifdef TARGET_OS_FAMILY_windows
61 # include "thread_windows.inline.hpp"
62 #endif
63 #ifdef TARGET_OS_FAMILY_bsd
64 # include "thread_bsd.inline.hpp"
65 #endif
66
67 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
68 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
69
70 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
71 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
72
73 InjectedField JavaClasses::_injected_fields[] = {
74 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
75 };
76
77 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
78 return _injected_fields[id].compute_offset();
79 }
80
81
82 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
83 *field_count = 0;
84
85 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
86 if (sid == vmSymbols::NO_SID) {
87 // Only well known classes can inject fields
88 return NULL;
89 }
90
91 int count = 0;
92 int start = -1;
93
94 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
95 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
96 count++; \
97 if (start == -1) start = klass##_##name##_enum; \
98 }
99 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
100 #undef LOOKUP_INJECTED_FIELD
101
102 if (start != -1) {
103 *field_count = count;
104 return _injected_fields + start;
105 }
106 return NULL;
107 }
108
109
110 static bool find_field(instanceKlass* ik,
111 Symbol* name_symbol, Symbol* signature_symbol,
112 fieldDescriptor* fd,
113 bool allow_super = false) {
114 if (allow_super)
115 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
116 else
117 return ik->find_local_field(name_symbol, signature_symbol, fd);
118 }
119
120 // Helpful routine for computing field offsets at run time rather than hardcoding them
121 static void
122 compute_offset(int &dest_offset,
123 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
124 bool allow_super = false) {
125 fieldDescriptor fd;
126 instanceKlass* ik = instanceKlass::cast(klass_oop);
127 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
128 ResourceMark rm;
129 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
130 #ifndef PRODUCT
131 klass_oop->print();
132 tty->print_cr("all fields:");
133 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
134 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
135 }
136 #endif //PRODUCT
137 fatal("Invalid layout of preloaded class");
138 }
139 dest_offset = fd.offset();
140 }
141
142 // Same as above but for "optional" offsets that might not be present in certain JDK versions
143 static void
144 compute_optional_offset(int& dest_offset,
145 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
146 bool allow_super = false) {
147 fieldDescriptor fd;
148 instanceKlass* ik = instanceKlass::cast(klass_oop);
149 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
150 dest_offset = fd.offset();
151 }
152 }
153
154
155 int java_lang_String::value_offset = 0;
156 int java_lang_String::offset_offset = 0;
157 int java_lang_String::count_offset = 0;
158 int java_lang_String::hash_offset = 0;
159
160 bool java_lang_String::initialized = false;
161
162 void java_lang_String::compute_offsets() {
163 assert(!initialized, "offsets should be initialized only once");
164
165 klassOop k = SystemDictionary::String_klass();
166 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
167 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
168 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
169 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
170
171 initialized = true;
172 }
173
174 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) {
175 assert(initialized, "Must be initialized");
176 // Create the String object first, so there's a chance that the String
177 // and the char array it points to end up in the same cache line.
178 oop obj;
179 if (tenured) {
180 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_permanent_instance(CHECK_NH);
181 } else {
182 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
183 }
184
185 // Create the char array. The String object must be handlized here
186 // because GC can happen as a result of the allocation attempt.
187 Handle h_obj(THREAD, obj);
188 typeArrayOop buffer;
189 if (tenured) {
190 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH);
191 } else {
192 buffer = oopFactory::new_charArray(length, CHECK_NH);
193 }
194
195 // Point the String at the char array
196 obj = h_obj();
197 set_value(obj, buffer);
198 // No need to zero the offset, allocation zero'ed the entire String object
199 assert(offset(obj) == 0, "initial String offset should be zero");
200 //set_offset(obj, 0);
201 set_count(obj, length);
202
203 return h_obj;
204 }
205
206 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) {
207 Handle h_obj = basic_create(length, tenured, CHECK_NH);
208 typeArrayOop buffer = value(h_obj());
209 for (int index = 0; index < length; index++) {
210 buffer->char_at_put(index, unicode[index]);
211 }
212 return h_obj;
213 }
214
215 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
216 return basic_create_from_unicode(unicode, length, false, CHECK_NH);
217 }
218
219 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) {
220 return basic_create_from_unicode(unicode, length, JavaObjectsInPerm, CHECK_NH);
221 }
222
223 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
224 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0);
225 return h_obj();
226 }
227
228 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
229 if (utf8_str == NULL) {
230 return Handle();
231 }
232 int length = UTF8::unicode_length(utf8_str);
233 Handle h_obj = basic_create(length, false, CHECK_NH);
234 if (length > 0) {
235 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
236 }
237 return h_obj;
238 }
239
240 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
241 Handle h_obj = create_from_str(utf8_str, CHECK_0);
242 return h_obj();
243 }
244
245 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
246 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
247 Handle h_obj = basic_create(length, false, CHECK_NH);
248 if (length > 0) {
249 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
250 }
251 return h_obj;
252 }
253
254 // Converts a C string to a Java String based on current encoding
255 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
256 assert(str != NULL, "bad arguments");
257
258 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
259 static to_java_string_fn_t _to_java_string_fn = NULL;
260
261 if (_to_java_string_fn == NULL) {
262 void *lib_handle = os::native_java_library();
263 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
264 if (_to_java_string_fn == NULL) {
265 fatal("NewStringPlatform missing");
266 }
267 }
268
269 jstring js = NULL;
270 { JavaThread* thread = (JavaThread*)THREAD;
271 assert(thread->is_Java_thread(), "must be java thread");
272 HandleMark hm(thread);
273 ThreadToNativeFromVM ttn(thread);
274 js = (_to_java_string_fn)(thread->jni_environment(), str);
275 }
276 return Handle(THREAD, JNIHandles::resolve(js));
277 }
278
279 // Converts a Java String to a native C string that can be used for
280 // native OS calls.
281 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
282
283 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
284 static to_platform_string_fn_t _to_platform_string_fn = NULL;
285
286 if (_to_platform_string_fn == NULL) {
287 void *lib_handle = os::native_java_library();
288 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
289 if (_to_platform_string_fn == NULL) {
290 fatal("GetStringPlatformChars missing");
291 }
292 }
293
294 char *native_platform_string;
295 { JavaThread* thread = (JavaThread*)THREAD;
296 assert(thread->is_Java_thread(), "must be java thread");
297 JNIEnv *env = thread->jni_environment();
298 jstring js = (jstring) JNIHandles::make_local(env, java_string());
299 bool is_copy;
300 HandleMark hm(thread);
301 ThreadToNativeFromVM ttn(thread);
302 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
303 assert(is_copy == JNI_TRUE, "is_copy value changed");
304 JNIHandles::destroy_local(js);
305 }
306 return native_platform_string;
307 }
308
309 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
310 oop obj = java_string();
311 // Typical usage is to convert all '/' to '.' in string.
312 typeArrayOop value = java_lang_String::value(obj);
313 int offset = java_lang_String::offset(obj);
314 int length = java_lang_String::length(obj);
315
316 // First check if any from_char exist
317 int index; // Declared outside, used later
318 for (index = 0; index < length; index++) {
319 if (value->char_at(index + offset) == from_char) {
320 break;
321 }
322 }
323 if (index == length) {
324 // No from_char, so do not copy.
325 return java_string;
326 }
327
328 // Create new UNICODE buffer. Must handlize value because GC
329 // may happen during String and char array creation.
330 typeArrayHandle h_value(THREAD, value);
331 Handle string = basic_create(length, false, CHECK_NH);
332
333 typeArrayOop from_buffer = h_value();
334 typeArrayOop to_buffer = java_lang_String::value(string());
335
336 // Copy contents
337 for (index = 0; index < length; index++) {
338 jchar c = from_buffer->char_at(index + offset);
339 if (c == from_char) {
340 c = to_char;
341 }
342 to_buffer->char_at_put(index, c);
343 }
344 return string;
345 }
346
347 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) {
348 typeArrayOop value = java_lang_String::value(java_string);
349 int offset = java_lang_String::offset(java_string);
350 length = java_lang_String::length(java_string);
351
352 jchar* result = NEW_RESOURCE_ARRAY(jchar, length);
353 for (int index = 0; index < length; index++) {
354 result[index] = value->char_at(index + offset);
355 }
356 return result;
357 }
358
359 unsigned int java_lang_String::to_hash(oop java_string) {
360 int length = java_lang_String::length(java_string);
361 // Zero length string will hash to zero with String.toHash() function.
362 if (length == 0) return 0;
363
364 typeArrayOop value = java_lang_String::value(java_string);
365 int offset = java_lang_String::offset(java_string);
366 return java_lang_String::to_hash(value->char_at_addr(offset), length);
367 }
368
369 unsigned int java_lang_String::hash_string(oop java_string) {
370 int length = java_lang_String::length(java_string);
371 // Zero length string doesn't hash necessarily hash to zero.
372 if (length == 0) {
373 return StringTable::hash_string(NULL, 0);
374 }
375
376 typeArrayOop value = java_lang_String::value(java_string);
377 int offset = java_lang_String::offset(java_string);
378 return StringTable::hash_string(value->char_at_addr(offset), length);
379 }
380
381 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
382 oop obj = java_string();
383 typeArrayOop value = java_lang_String::value(obj);
384 int offset = java_lang_String::offset(obj);
385 int length = java_lang_String::length(obj);
386 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
387 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
388 return sym;
389 }
390
391 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
392 typeArrayOop value = java_lang_String::value(java_string);
393 int offset = java_lang_String::offset(java_string);
394 int length = java_lang_String::length(java_string);
395 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
396 return SymbolTable::probe_unicode(base, length);
397 }
398
399
400 int java_lang_String::utf8_length(oop java_string) {
401 typeArrayOop value = java_lang_String::value(java_string);
402 int offset = java_lang_String::offset(java_string);
403 int length = java_lang_String::length(java_string);
404 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
405 return UNICODE::utf8_length(position, length);
406 }
407
408 char* java_lang_String::as_utf8_string(oop java_string) {
409 typeArrayOop value = java_lang_String::value(java_string);
410 int offset = java_lang_String::offset(java_string);
411 int length = java_lang_String::length(java_string);
412 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
413 return UNICODE::as_utf8(position, length);
414 }
415
416 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
417 typeArrayOop value = java_lang_String::value(java_string);
418 int offset = java_lang_String::offset(java_string);
419 int length = java_lang_String::length(java_string);
420 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
421 return UNICODE::as_utf8(position, length, buf, buflen);
422 }
423
424 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
425 typeArrayOop value = java_lang_String::value(java_string);
426 int offset = java_lang_String::offset(java_string);
427 int length = java_lang_String::length(java_string);
428 assert(start + len <= length, "just checking");
429 jchar* position = value->char_at_addr(offset + start);
430 return UNICODE::as_utf8(position, len);
431 }
432
433 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
434 assert(SharedSkipVerify ||
435 java_string->klass() == SystemDictionary::String_klass(),
436 "must be java_string");
437 typeArrayOop value = java_lang_String::value(java_string);
438 int offset = java_lang_String::offset(java_string);
439 int length = java_lang_String::length(java_string);
440 if (length != len) {
441 return false;
442 }
443 for (int i = 0; i < len; i++) {
444 if (value->char_at(i + offset) != chars[i]) {
445 return false;
446 }
447 }
448 return true;
449 }
450
451 void java_lang_String::print(Handle java_string, outputStream* st) {
452 oop obj = java_string();
453 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string");
454 typeArrayOop value = java_lang_String::value(obj);
455 int offset = java_lang_String::offset(obj);
456 int length = java_lang_String::length(obj);
457
458 int end = MIN2(length, 100);
459 if (value == NULL) {
460 // This can happen if, e.g., printing a String
461 // object before its initializer has been called
462 st->print_cr("NULL");
463 } else {
464 st->print("\"");
465 for (int index = 0; index < length; index++) {
466 st->print("%c", value->char_at(index + offset));
467 }
468 st->print("\"");
469 }
470 }
471
472 static void initialize_static_field(fieldDescriptor* fd, TRAPS) {
473 Handle mirror (THREAD, fd->field_holder()->java_mirror());
474 assert(mirror.not_null() && fd->is_static(), "just checking");
475 if (fd->has_initial_value()) {
476 BasicType t = fd->field_type();
477 switch (t) {
478 case T_BYTE:
479 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
480 break;
481 case T_BOOLEAN:
482 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
483 break;
484 case T_CHAR:
485 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
486 break;
487 case T_SHORT:
488 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
489 break;
490 case T_INT:
491 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
492 break;
493 case T_FLOAT:
494 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
495 break;
496 case T_DOUBLE:
497 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
498 break;
499 case T_LONG:
500 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
501 break;
502 case T_OBJECT:
503 {
504 #ifdef ASSERT
505 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
506 assert(fd->signature() == sym, "just checking");
507 #endif
508 oop string = fd->string_initial_value(CHECK);
509 mirror()->obj_field_put(fd->offset(), string);
510 }
511 break;
512 default:
513 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
514 "Illegal ConstantValue attribute in class file");
515 }
516 }
517 }
518
519
520 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
521 assert(instanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
522
523 if (k->oop_is_instance()) {
524 // During bootstrap, java.lang.Class wasn't loaded so static field
525 // offsets were computed without the size added it. Go back and
526 // update all the static field offsets to included the size.
527 for (JavaFieldStream fs(instanceKlass::cast(k())); !fs.done(); fs.next()) {
528 if (fs.access_flags().is_static()) {
529 int real_offset = fs.offset() + instanceMirrorKlass::offset_of_static_fields();
530 fs.set_offset(real_offset);
531 }
532 }
533 }
534 create_mirror(k, Handle(NULL), CHECK);
535 }
536
537 oop java_lang_Class::create_mirror(KlassHandle k, Handle class_loader, TRAPS) {
538 assert(k->java_mirror() == NULL, "should only assign mirror once");
539 // Use this moment of initialization to cache modifier_flags also,
540 // to support Class.getModifiers(). Instance classes recalculate
541 // the cached flags after the class file is parsed, but before the
542 // class is put into the system dictionary.
543 int computed_modifiers = k->compute_modifier_flags(CHECK_0);
544 k->set_modifier_flags(computed_modifiers);
545 if (SystemDictionary::Class_klass_loaded() && (k->oop_is_instance() || k->oop_is_javaArray())) {
546 // Allocate mirror (java.lang.Class instance)
547 Handle mirror = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
548
549 instanceMirrorKlass* mk = instanceMirrorKlass::cast(mirror->klass());
550 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
551
552 // It might also have a component mirror. This mirror must already exist.
553 if (k->oop_is_javaArray()) {
554 Handle comp_mirror;
555 if (k->oop_is_typeArray()) {
556 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type();
557 comp_mirror = Universe::java_mirror(type);
558 assert(comp_mirror.not_null(), "must have primitive mirror");
559 } else if (k->oop_is_objArray()) {
560 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass();
561 if (element_klass != NULL
562 && (Klass::cast(element_klass)->oop_is_instance() ||
563 Klass::cast(element_klass)->oop_is_javaArray())) {
564 comp_mirror = Klass::cast(element_klass)->java_mirror();
565 assert(comp_mirror.not_null(), "must have element mirror");
566 }
567 // else some object array internal to the VM, like systemObjArrayKlassObj
568 }
569 if (comp_mirror.not_null()) {
570 // Two-way link between the array klass and its component mirror:
571 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror());
572 set_array_klass(comp_mirror(), k->as_klassOop());
573 }
574 } else if (k->oop_is_instance()) {
575 // Initialize static fields
576 instanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL);
577 }
578 // set the classLoader field in the java_lang_Class instance
579 assert(class_loader() == k->class_loader(), "should be same");
580 set_class_loader(mirror(), class_loader());
581 return mirror();
582 } else {
583 return NULL;
584 }
585 }
586
587
588
589 int java_lang_Class::oop_size(oop java_class) {
590 assert(_oop_size_offset != 0, "must be set");
591 return java_class->int_field(_oop_size_offset);
592 }
593 void java_lang_Class::set_oop_size(oop java_class, int size) {
594 assert(_oop_size_offset != 0, "must be set");
595 java_class->int_field_put(_oop_size_offset, size);
596 }
597 int java_lang_Class::static_oop_field_count(oop java_class) {
598 assert(_static_oop_field_count_offset != 0, "must be set");
599 return java_class->int_field(_static_oop_field_count_offset);
600 }
601 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
602 assert(_static_oop_field_count_offset != 0, "must be set");
603 java_class->int_field_put(_static_oop_field_count_offset, size);
604 }
605
606 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
607 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
608 if (_class_loader_offset != 0) {
609 java_class->obj_field_put(_class_loader_offset, loader);
610 }
611 }
612
613 oop java_lang_Class::class_loader(oop java_class) {
614 assert(_class_loader_offset != 0, "must be set");
615 return java_class->obj_field(_class_loader_offset);
616 }
617
618 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
619 // This should be improved by adding a field at the Java level or by
620 // introducing a new VM klass (see comment in ClassFileParser)
621 oop java_class = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance((oop)NULL, CHECK_0);
622 if (type != T_VOID) {
623 klassOop aklass = Universe::typeArrayKlassObj(type);
624 assert(aklass != NULL, "correct bootstrap");
625 set_array_klass(java_class, aklass);
626 }
627 #ifdef ASSERT
628 instanceMirrorKlass* mk = instanceMirrorKlass::cast(SystemDictionary::Class_klass());
629 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
630 #endif
631 return java_class;
632 }
633
634
635 klassOop java_lang_Class::as_klassOop(oop java_class) {
636 //%note memory_2
637 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
638 klassOop k = klassOop(java_class->obj_field(_klass_offset));
639 assert(k == NULL || k->is_klass(), "type check");
640 return k;
641 }
642
643
644 void java_lang_Class::set_klass(oop java_class, klassOop klass) {
645 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
646 java_class->obj_field_put(_klass_offset, klass);
647 }
648
649
650 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
651 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
652 Symbol* name = NULL;
653 bool is_instance = false;
654 if (is_primitive(java_class)) {
655 name = vmSymbols::type_signature(primitive_type(java_class));
656 } else {
657 klassOop k = as_klassOop(java_class);
658 is_instance = Klass::cast(k)->oop_is_instance();
659 name = Klass::cast(k)->name();
660 }
661 if (name == NULL) {
662 st->print("<null>");
663 return;
664 }
665 if (is_instance) st->print("L");
666 st->write((char*) name->base(), (int) name->utf8_length());
667 if (is_instance) st->print(";");
668 }
669
670 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
671 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
672 Symbol* name;
673 if (is_primitive(java_class)) {
674 name = vmSymbols::type_signature(primitive_type(java_class));
675 // Because this can create a new symbol, the caller has to decrement
676 // the refcount, so make adjustment here and below for symbols returned
677 // that are not created or incremented due to a successful lookup.
678 name->increment_refcount();
679 } else {
680 klassOop k = as_klassOop(java_class);
681 if (!Klass::cast(k)->oop_is_instance()) {
682 name = Klass::cast(k)->name();
683 name->increment_refcount();
684 } else {
685 ResourceMark rm;
686 const char* sigstr = Klass::cast(k)->signature_name();
687 int siglen = (int) strlen(sigstr);
688 if (!intern_if_not_found) {
689 name = SymbolTable::probe(sigstr, siglen);
690 } else {
691 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
692 }
693 }
694 }
695 return name;
696 }
697
698
699 klassOop java_lang_Class::array_klass(oop java_class) {
700 klassOop k = klassOop(java_class->obj_field(_array_klass_offset));
701 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass");
702 return k;
703 }
704
705
706 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) {
707 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass");
708 java_class->obj_field_put(_array_klass_offset, klass);
709 }
710
711
712 methodOop java_lang_Class::resolved_constructor(oop java_class) {
713 oop constructor = java_class->obj_field(_resolved_constructor_offset);
714 assert(constructor == NULL || constructor->is_method(), "should be method");
715 return methodOop(constructor);
716 }
717
718
719 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) {
720 assert(constructor->is_method(), "should be method");
721 java_class->obj_field_put(_resolved_constructor_offset, constructor);
722 }
723
724
725 bool java_lang_Class::is_primitive(oop java_class) {
726 // should assert:
727 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
728 klassOop k = klassOop(java_class->obj_field(_klass_offset));
729 return k == NULL;
730 }
731
732
733 BasicType java_lang_Class::primitive_type(oop java_class) {
734 assert(java_lang_Class::is_primitive(java_class), "just checking");
735 klassOop ak = klassOop(java_class->obj_field(_array_klass_offset));
736 BasicType type = T_VOID;
737 if (ak != NULL) {
738 // Note: create_basic_type_mirror above initializes ak to a non-null value.
739 type = arrayKlass::cast(ak)->element_type();
740 } else {
741 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
742 }
743 assert(Universe::java_mirror(type) == java_class, "must be consistent");
744 return type;
745 }
746
747 BasicType java_lang_Class::as_BasicType(oop java_class, klassOop* reference_klass) {
748 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
749 if (is_primitive(java_class)) {
750 if (reference_klass != NULL)
751 (*reference_klass) = NULL;
752 return primitive_type(java_class);
753 } else {
754 if (reference_klass != NULL)
755 (*reference_klass) = as_klassOop(java_class);
756 return T_OBJECT;
757 }
758 }
759
760
761 oop java_lang_Class::primitive_mirror(BasicType t) {
762 oop mirror = Universe::java_mirror(t);
763 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
764 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
765 return mirror;
766 }
767
768 bool java_lang_Class::offsets_computed = false;
769 int java_lang_Class::classRedefinedCount_offset = -1;
770
771 void java_lang_Class::compute_offsets() {
772 assert(!offsets_computed, "offsets should be initialized only once");
773 offsets_computed = true;
774
775 klassOop klass_oop = SystemDictionary::Class_klass();
776 // The classRedefinedCount field is only present starting in 1.5,
777 // so don't go fatal.
778 compute_optional_offset(classRedefinedCount_offset,
779 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
780
781 // Needs to be optional because the old build runs Queens during bootstrapping
782 // and jdk8-9 doesn't have coordinated pushes yet.
783 compute_optional_offset(_class_loader_offset,
784 klass_oop, vmSymbols::classClassLoader_name(),
785 vmSymbols::classloader_signature());
786
787 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
788 }
789
790 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
791 if (!JDK_Version::is_gte_jdk15x_version()
792 || classRedefinedCount_offset == -1) {
793 // The classRedefinedCount field is only present starting in 1.5.
794 // If we don't have an offset for it then just return -1 as a marker.
795 return -1;
796 }
797
798 return the_class_mirror->int_field(classRedefinedCount_offset);
799 }
800
801 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
802 if (!JDK_Version::is_gte_jdk15x_version()
803 || classRedefinedCount_offset == -1) {
804 // The classRedefinedCount field is only present starting in 1.5.
805 // If we don't have an offset for it then nothing to set.
806 return;
807 }
808
809 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
810 }
811
812
813 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
814 // platform thread structure, and a eetop offset which was used for thread
815 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
816 // merged, so in the HotSpot VM we just use the eetop field for the thread
817 // instead of the privateInfo_offset.
818 //
819 // Note: The stackSize field is only present starting in 1.4.
820
821 int java_lang_Thread::_name_offset = 0;
822 int java_lang_Thread::_group_offset = 0;
823 int java_lang_Thread::_contextClassLoader_offset = 0;
824 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
825 int java_lang_Thread::_priority_offset = 0;
826 int java_lang_Thread::_eetop_offset = 0;
827 int java_lang_Thread::_daemon_offset = 0;
828 int java_lang_Thread::_stillborn_offset = 0;
829 int java_lang_Thread::_stackSize_offset = 0;
830 int java_lang_Thread::_tid_offset = 0;
831 int java_lang_Thread::_thread_status_offset = 0;
832 int java_lang_Thread::_park_blocker_offset = 0;
833 int java_lang_Thread::_park_event_offset = 0 ;
834
835
836 void java_lang_Thread::compute_offsets() {
837 assert(_group_offset == 0, "offsets should be initialized only once");
838
839 klassOop k = SystemDictionary::Thread_klass();
840 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
841 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
842 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
843 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
844 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
845 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
846 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
847 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
848 // The stackSize field is only present starting in 1.4, so don't go fatal.
849 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
850 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
851 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
852 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
853 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
854 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
855 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
856 vmSymbols::long_signature());
857 }
858
859
860 JavaThread* java_lang_Thread::thread(oop java_thread) {
861 return (JavaThread*)java_thread->address_field(_eetop_offset);
862 }
863
864
865 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
866 java_thread->address_field_put(_eetop_offset, (address)thread);
867 }
868
869
870 typeArrayOop java_lang_Thread::name(oop java_thread) {
871 oop name = java_thread->obj_field(_name_offset);
872 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
873 return typeArrayOop(name);
874 }
875
876
877 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
878 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
879 java_thread->obj_field_put(_name_offset, name);
880 }
881
882
883 ThreadPriority java_lang_Thread::priority(oop java_thread) {
884 return (ThreadPriority)java_thread->int_field(_priority_offset);
885 }
886
887
888 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
889 java_thread->int_field_put(_priority_offset, priority);
890 }
891
892
893 oop java_lang_Thread::threadGroup(oop java_thread) {
894 return java_thread->obj_field(_group_offset);
895 }
896
897
898 bool java_lang_Thread::is_stillborn(oop java_thread) {
899 return java_thread->bool_field(_stillborn_offset) != 0;
900 }
901
902
903 // We never have reason to turn the stillborn bit off
904 void java_lang_Thread::set_stillborn(oop java_thread) {
905 java_thread->bool_field_put(_stillborn_offset, true);
906 }
907
908
909 bool java_lang_Thread::is_alive(oop java_thread) {
910 JavaThread* thr = java_lang_Thread::thread(java_thread);
911 return (thr != NULL);
912 }
913
914
915 bool java_lang_Thread::is_daemon(oop java_thread) {
916 return java_thread->bool_field(_daemon_offset) != 0;
917 }
918
919
920 void java_lang_Thread::set_daemon(oop java_thread) {
921 java_thread->bool_field_put(_daemon_offset, true);
922 }
923
924 oop java_lang_Thread::context_class_loader(oop java_thread) {
925 return java_thread->obj_field(_contextClassLoader_offset);
926 }
927
928 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
929 return java_thread->obj_field(_inheritedAccessControlContext_offset);
930 }
931
932
933 jlong java_lang_Thread::stackSize(oop java_thread) {
934 // The stackSize field is only present starting in 1.4
935 if (_stackSize_offset > 0) {
936 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check");
937 return java_thread->long_field(_stackSize_offset);
938 } else {
939 return 0;
940 }
941 }
942
943 // Write the thread status value to threadStatus field in java.lang.Thread java class.
944 void java_lang_Thread::set_thread_status(oop java_thread,
945 java_lang_Thread::ThreadStatus status) {
946 // The threadStatus is only present starting in 1.5
947 if (_thread_status_offset > 0) {
948 java_thread->int_field_put(_thread_status_offset, status);
949 }
950 }
951
952 // Read thread status value from threadStatus field in java.lang.Thread java class.
953 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
954 assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() ||
955 JavaThread::current()->thread_state() == _thread_in_vm,
956 "Java Thread is not running in vm");
957 // The threadStatus is only present starting in 1.5
958 if (_thread_status_offset > 0) {
959 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
960 } else {
961 // All we can easily figure out is if it is alive, but that is
962 // enough info for a valid unknown status.
963 // These aren't restricted to valid set ThreadStatus values, so
964 // use JVMTI values and cast.
965 JavaThread* thr = java_lang_Thread::thread(java_thread);
966 if (thr == NULL) {
967 // the thread hasn't run yet or is in the process of exiting
968 return NEW;
969 }
970 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
971 }
972 }
973
974
975 jlong java_lang_Thread::thread_id(oop java_thread) {
976 // The thread ID field is only present starting in 1.5
977 if (_tid_offset > 0) {
978 return java_thread->long_field(_tid_offset);
979 } else {
980 return 0;
981 }
982 }
983
984 oop java_lang_Thread::park_blocker(oop java_thread) {
985 assert(JDK_Version::current().supports_thread_park_blocker() &&
986 _park_blocker_offset != 0, "Must support parkBlocker field");
987
988 if (_park_blocker_offset > 0) {
989 return java_thread->obj_field(_park_blocker_offset);
990 }
991
992 return NULL;
993 }
994
995 jlong java_lang_Thread::park_event(oop java_thread) {
996 if (_park_event_offset > 0) {
997 return java_thread->long_field(_park_event_offset);
998 }
999 return 0;
1000 }
1001
1002 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1003 if (_park_event_offset > 0) {
1004 java_thread->long_field_put(_park_event_offset, ptr);
1005 return true;
1006 }
1007 return false;
1008 }
1009
1010
1011 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1012 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status");
1013 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1014 switch (status) {
1015 case NEW : return "NEW";
1016 case RUNNABLE : return "RUNNABLE";
1017 case SLEEPING : return "TIMED_WAITING (sleeping)";
1018 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1019 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1020 case PARKED : return "WAITING (parking)";
1021 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1022 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1023 case TERMINATED : return "TERMINATED";
1024 default : return "UNKNOWN";
1025 };
1026 }
1027 int java_lang_ThreadGroup::_parent_offset = 0;
1028 int java_lang_ThreadGroup::_name_offset = 0;
1029 int java_lang_ThreadGroup::_threads_offset = 0;
1030 int java_lang_ThreadGroup::_groups_offset = 0;
1031 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1032 int java_lang_ThreadGroup::_destroyed_offset = 0;
1033 int java_lang_ThreadGroup::_daemon_offset = 0;
1034 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1035 int java_lang_ThreadGroup::_nthreads_offset = 0;
1036 int java_lang_ThreadGroup::_ngroups_offset = 0;
1037
1038 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1039 assert(java_thread_group->is_oop(), "thread group must be oop");
1040 return java_thread_group->obj_field(_parent_offset);
1041 }
1042
1043 // ("name as oop" accessor is not necessary)
1044
1045 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1046 oop name = java_thread_group->obj_field(_name_offset);
1047 // ThreadGroup.name can be null
1048 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1049 }
1050
1051 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1052 assert(java_thread_group->is_oop(), "thread group must be oop");
1053 return java_thread_group->int_field(_nthreads_offset);
1054 }
1055
1056 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1057 oop threads = java_thread_group->obj_field(_threads_offset);
1058 assert(threads != NULL, "threadgroups should have threads");
1059 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1060 return objArrayOop(threads);
1061 }
1062
1063 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1064 assert(java_thread_group->is_oop(), "thread group must be oop");
1065 return java_thread_group->int_field(_ngroups_offset);
1066 }
1067
1068 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1069 oop groups = java_thread_group->obj_field(_groups_offset);
1070 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1071 return objArrayOop(groups);
1072 }
1073
1074 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1075 assert(java_thread_group->is_oop(), "thread group must be oop");
1076 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1077 }
1078
1079 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1080 assert(java_thread_group->is_oop(), "thread group must be oop");
1081 return java_thread_group->bool_field(_destroyed_offset) != 0;
1082 }
1083
1084 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1085 assert(java_thread_group->is_oop(), "thread group must be oop");
1086 return java_thread_group->bool_field(_daemon_offset) != 0;
1087 }
1088
1089 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1090 assert(java_thread_group->is_oop(), "thread group must be oop");
1091 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1092 }
1093
1094 void java_lang_ThreadGroup::compute_offsets() {
1095 assert(_parent_offset == 0, "offsets should be initialized only once");
1096
1097 klassOop k = SystemDictionary::ThreadGroup_klass();
1098
1099 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1100 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1101 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1102 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1103 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1104 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1105 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1106 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1107 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1108 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1109 }
1110
1111 oop java_lang_Throwable::unassigned_stacktrace() {
1112 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Throwable_klass());
1113 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1114 if (UseCompressedOops) {
1115 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1116 } else {
1117 return oopDesc::load_decode_heap_oop((oop*)addr);
1118 }
1119 }
1120
1121 oop java_lang_Throwable::backtrace(oop throwable) {
1122 return throwable->obj_field_acquire(backtrace_offset);
1123 }
1124
1125
1126 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1127 throwable->release_obj_field_put(backtrace_offset, value);
1128 }
1129
1130
1131 oop java_lang_Throwable::message(oop throwable) {
1132 return throwable->obj_field(detailMessage_offset);
1133 }
1134
1135
1136 oop java_lang_Throwable::message(Handle throwable) {
1137 return throwable->obj_field(detailMessage_offset);
1138 }
1139
1140
1141 void java_lang_Throwable::set_message(oop throwable, oop value) {
1142 throwable->obj_field_put(detailMessage_offset, value);
1143 }
1144
1145
1146 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1147 throwable->obj_field_put(stackTrace_offset, st_element_array);
1148 }
1149
1150 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1151 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1152 set_stacktrace(throwable, NULL);
1153 }
1154
1155
1156 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1157 ResourceMark rm;
1158 klassOop k = throwable->klass();
1159 assert(k != NULL, "just checking");
1160 st->print("%s", instanceKlass::cast(k)->external_name());
1161 oop msg = message(throwable);
1162 if (msg != NULL) {
1163 st->print(": %s", java_lang_String::as_utf8_string(msg));
1164 }
1165 }
1166
1167
1168 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1169 ResourceMark rm;
1170 klassOop k = throwable->klass();
1171 assert(k != NULL, "just checking");
1172 st->print("%s", instanceKlass::cast(k)->external_name());
1173 oop msg = message(throwable);
1174 if (msg != NULL) {
1175 st->print(": %s", java_lang_String::as_utf8_string(msg));
1176 }
1177 }
1178
1179 // Print stack trace element to resource allocated buffer
1180 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) {
1181 // Get strings and string lengths
1182 instanceKlass* klass = instanceKlass::cast(method->method_holder());
1183 const char* klass_name = klass->external_name();
1184 int buf_len = (int)strlen(klass_name);
1185 char* source_file_name;
1186 if (klass->source_file_name() == NULL) {
1187 source_file_name = NULL;
1188 } else {
1189 source_file_name = klass->source_file_name()->as_C_string();
1190 buf_len += (int)strlen(source_file_name);
1191 }
1192 char* method_name = method->name()->as_C_string();
1193 buf_len += (int)strlen(method_name);
1194
1195 // Allocate temporary buffer with extra space for formatting and line number
1196 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1197
1198 // Print stack trace line in buffer
1199 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1200 if (method->is_native()) {
1201 strcat(buf, "(Native Method)");
1202 } else {
1203 int line_number = method->line_number_from_bci(bci);
1204 if (source_file_name != NULL && (line_number != -1)) {
1205 // Sourcename and linenumber
1206 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1207 } else if (source_file_name != NULL) {
1208 // Just sourcename
1209 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1210 } else {
1211 // Neither soucename and linenumber
1212 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1213 }
1214 nmethod* nm = method->code();
1215 if (WizardMode && nm != NULL) {
1216 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1217 }
1218 }
1219
1220 return buf;
1221 }
1222
1223
1224 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) {
1225 ResourceMark rm;
1226 char* buf = print_stack_element_to_buffer(method, bci);
1227 print_to_stream(stream, buf);
1228 }
1229
1230 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) {
1231 ResourceMark rm;
1232 char* buf = print_stack_element_to_buffer(method, bci);
1233 st->print_cr("%s", buf);
1234 }
1235
1236 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1237 if (stream.is_null()) {
1238 tty->print_cr("%s", str);
1239 } else {
1240 EXCEPTION_MARK;
1241 JavaValue result(T_VOID);
1242 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1243 if (!HAS_PENDING_EXCEPTION) {
1244 JavaCalls::call_virtual(&result,
1245 stream,
1246 KlassHandle(THREAD, stream->klass()),
1247 vmSymbols::println_name(),
1248 vmSymbols::char_array_void_signature(),
1249 arg,
1250 THREAD);
1251 }
1252 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1253 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1254 }
1255
1256 }
1257
1258
1259 const char* java_lang_Throwable::no_stack_trace_message() {
1260 return "\t<<no stack trace available>>";
1261 }
1262
1263
1264 // Currently used only for exceptions occurring during startup
1265 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1266 Thread *THREAD = Thread::current();
1267 Handle h_throwable(THREAD, throwable);
1268 while (h_throwable.not_null()) {
1269 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1270 if (result.is_null()) {
1271 st->print_cr(no_stack_trace_message());
1272 return;
1273 }
1274
1275 while (result.not_null()) {
1276 objArrayHandle methods (THREAD,
1277 objArrayOop(result->obj_at(trace_methods_offset)));
1278 typeArrayHandle bcis (THREAD,
1279 typeArrayOop(result->obj_at(trace_bcis_offset)));
1280
1281 if (methods.is_null() || bcis.is_null()) {
1282 st->print_cr(no_stack_trace_message());
1283 return;
1284 }
1285
1286 int length = methods()->length();
1287 for (int index = 0; index < length; index++) {
1288 methodOop method = methodOop(methods()->obj_at(index));
1289 if (method == NULL) goto handle_cause;
1290 int bci = bcis->ushort_at(index);
1291 print_stack_element(st, method, bci);
1292 }
1293 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1294 }
1295 handle_cause:
1296 {
1297 EXCEPTION_MARK;
1298 JavaValue result(T_OBJECT);
1299 JavaCalls::call_virtual(&result,
1300 h_throwable,
1301 KlassHandle(THREAD, h_throwable->klass()),
1302 vmSymbols::getCause_name(),
1303 vmSymbols::void_throwable_signature(),
1304 THREAD);
1305 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1306 if (HAS_PENDING_EXCEPTION) {
1307 CLEAR_PENDING_EXCEPTION;
1308 h_throwable = Handle();
1309 } else {
1310 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1311 if (h_throwable.not_null()) {
1312 st->print("Caused by: ");
1313 print(h_throwable, st);
1314 st->cr();
1315 }
1316 }
1317 }
1318 }
1319 }
1320
1321
1322 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1323 // Note: this is no longer used in Merlin, but we support it for compatibility.
1324 Thread *thread = Thread::current();
1325 Handle stream(thread, print_stream);
1326 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1327 if (result.is_null()) {
1328 print_to_stream(stream, no_stack_trace_message());
1329 return;
1330 }
1331
1332 while (result.not_null()) {
1333 objArrayHandle methods (thread,
1334 objArrayOop(result->obj_at(trace_methods_offset)));
1335 typeArrayHandle bcis (thread,
1336 typeArrayOop(result->obj_at(trace_bcis_offset)));
1337
1338 if (methods.is_null() || bcis.is_null()) {
1339 print_to_stream(stream, no_stack_trace_message());
1340 return;
1341 }
1342
1343 int length = methods()->length();
1344 for (int index = 0; index < length; index++) {
1345 methodOop method = methodOop(methods()->obj_at(index));
1346 if (method == NULL) return;
1347 int bci = bcis->ushort_at(index);
1348 print_stack_element(stream, method, bci);
1349 }
1350 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1351 }
1352 }
1353
1354 // This class provides a simple wrapper over the internal structure of
1355 // exception backtrace to insulate users of the backtrace from needing
1356 // to know what it looks like.
1357 class BacktraceBuilder: public StackObj {
1358 private:
1359 Handle _backtrace;
1360 objArrayOop _head;
1361 objArrayOop _methods;
1362 typeArrayOop _bcis;
1363 int _index;
1364 No_Safepoint_Verifier _nsv;
1365
1366 public:
1367
1368 enum {
1369 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1370 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1371 trace_next_offset = java_lang_Throwable::trace_next_offset,
1372 trace_size = java_lang_Throwable::trace_size,
1373 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1374 };
1375
1376 // constructor for new backtrace
1377 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) {
1378 expand(CHECK);
1379 _backtrace = _head;
1380 _index = 0;
1381 }
1382
1383 void expand(TRAPS) {
1384 objArrayHandle old_head(THREAD, _head);
1385 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1386
1387 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1388 objArrayHandle new_head(THREAD, head);
1389
1390 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1391 objArrayHandle new_methods(THREAD, methods);
1392
1393 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1394 typeArrayHandle new_bcis(THREAD, bcis);
1395
1396 if (!old_head.is_null()) {
1397 old_head->obj_at_put(trace_next_offset, new_head());
1398 }
1399 new_head->obj_at_put(trace_methods_offset, new_methods());
1400 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1401
1402 _head = new_head();
1403 _methods = new_methods();
1404 _bcis = new_bcis();
1405 _index = 0;
1406 }
1407
1408 oop backtrace() {
1409 return _backtrace();
1410 }
1411
1412 inline void push(methodOop method, int bci, TRAPS) {
1413 // Smear the -1 bci to 0 since the array only holds unsigned
1414 // shorts. The later line number lookup would just smear the -1
1415 // to a 0 even if it could be recorded.
1416 if (bci == SynchronizationEntryBCI) bci = 0;
1417 assert(bci == (jushort)bci, "doesn't fit");
1418
1419 if (_index >= trace_chunk_size) {
1420 methodHandle mhandle(THREAD, method);
1421 expand(CHECK);
1422 method = mhandle();
1423 }
1424
1425 _methods->obj_at_put(_index, method);
1426 _bcis->ushort_at_put(_index, bci);
1427 _index++;
1428 }
1429
1430 methodOop current_method() {
1431 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1432 return methodOop(_methods->obj_at(_index));
1433 }
1434
1435 jushort current_bci() {
1436 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1437 return _bcis->ushort_at(_index);
1438 }
1439 };
1440
1441
1442 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1443 if (!StackTraceInThrowable) return;
1444 ResourceMark rm(THREAD);
1445
1446 // Start out by clearing the backtrace for this object, in case the VM
1447 // runs out of memory while allocating the stack trace
1448 set_backtrace(throwable(), NULL);
1449 if (JDK_Version::is_gte_jdk14x_version()) {
1450 // New since 1.4, clear lazily constructed Java level stacktrace if
1451 // refilling occurs
1452 // This is unnecessary in 1.7+ but harmless
1453 clear_stacktrace(throwable());
1454 }
1455
1456 int max_depth = MaxJavaStackTraceDepth;
1457 JavaThread* thread = (JavaThread*)THREAD;
1458 BacktraceBuilder bt(CHECK);
1459
1460 // If there is no Java frame just return the method that was being called
1461 // with bci 0
1462 if (!thread->has_last_Java_frame()) {
1463 if (max_depth >= 1 && method() != NULL) {
1464 bt.push(method(), 0, CHECK);
1465 set_backtrace(throwable(), bt.backtrace());
1466 }
1467 return;
1468 }
1469
1470 // Instead of using vframe directly, this version of fill_in_stack_trace
1471 // basically handles everything by hand. This significantly improved the
1472 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1473 // See bug 6333838 for more details.
1474 // The "ASSERT" here is to verify this method generates the exactly same stack
1475 // trace as utilizing vframe.
1476 #ifdef ASSERT
1477 vframeStream st(thread);
1478 methodHandle st_method(THREAD, st.method());
1479 #endif
1480 int total_count = 0;
1481 RegisterMap map(thread, false);
1482 int decode_offset = 0;
1483 nmethod* nm = NULL;
1484 bool skip_fillInStackTrace_check = false;
1485 bool skip_throwableInit_check = false;
1486 bool skip_hidden = !ShowHiddenFrames;
1487
1488 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1489 methodOop method = NULL;
1490 int bci = 0;
1491
1492 // Compiled java method case.
1493 if (decode_offset != 0) {
1494 DebugInfoReadStream stream(nm, decode_offset);
1495 decode_offset = stream.read_int();
1496 method = (methodOop)nm->oop_at(stream.read_int());
1497 bci = stream.read_bci();
1498 } else {
1499 if (fr.is_first_frame()) break;
1500 address pc = fr.pc();
1501 if (fr.is_interpreted_frame()) {
1502 intptr_t bcx = fr.interpreter_frame_bcx();
1503 method = fr.interpreter_frame_method();
1504 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1505 fr = fr.sender(&map);
1506 } else {
1507 CodeBlob* cb = fr.cb();
1508 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1509 // but non nmethod
1510 fr = fr.sender(&map);
1511 if (cb == NULL || !cb->is_nmethod()) {
1512 continue;
1513 }
1514 nm = (nmethod*)cb;
1515 if (nm->method()->is_native()) {
1516 method = nm->method();
1517 bci = 0;
1518 } else {
1519 PcDesc* pd = nm->pc_desc_at(pc);
1520 decode_offset = pd->scope_decode_offset();
1521 // if decode_offset is not equal to 0, it will execute the
1522 // "compiled java method case" at the beginning of the loop.
1523 continue;
1524 }
1525 }
1526 }
1527 #ifdef ASSERT
1528 assert(st_method() == method && st.bci() == bci,
1529 "Wrong stack trace");
1530 st.next();
1531 // vframeStream::method isn't GC-safe so store off a copy
1532 // of the methodOop in case we GC.
1533 if (!st.at_end()) {
1534 st_method = st.method();
1535 }
1536 #endif
1537
1538 // the format of the stacktrace will be:
1539 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1540 // - 0 or more <init> methods for the exception class (skipped)
1541 // - rest of the stack
1542
1543 if (!skip_fillInStackTrace_check) {
1544 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1545 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1546 throwable->is_a(method->method_holder())) {
1547 continue;
1548 }
1549 else {
1550 skip_fillInStackTrace_check = true; // gone past them all
1551 }
1552 }
1553 if (!skip_throwableInit_check) {
1554 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1555
1556 // skip <init> methods of the exception class and superclasses
1557 // This is simlar to classic VM.
1558 if (method->name() == vmSymbols::object_initializer_name() &&
1559 throwable->is_a(method->method_holder())) {
1560 continue;
1561 } else {
1562 // there are none or we've seen them all - either way stop checking
1563 skip_throwableInit_check = true;
1564 }
1565 }
1566 if (method->is_hidden()) {
1567 if (skip_hidden) continue;
1568 }
1569 bt.push(method, bci, CHECK);
1570 total_count++;
1571 }
1572
1573 // Put completed stack trace into throwable object
1574 set_backtrace(throwable(), bt.backtrace());
1575 }
1576
1577 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1578 // No-op if stack trace is disabled
1579 if (!StackTraceInThrowable) {
1580 return;
1581 }
1582
1583 // Disable stack traces for some preallocated out of memory errors
1584 if (!Universe::should_fill_in_stack_trace(throwable)) {
1585 return;
1586 }
1587
1588 PRESERVE_EXCEPTION_MARK;
1589
1590 JavaThread* thread = JavaThread::active();
1591 fill_in_stack_trace(throwable, method, thread);
1592 // ignore exceptions thrown during stack trace filling
1593 CLEAR_PENDING_EXCEPTION;
1594 }
1595
1596 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1597 // Allocate stack trace - backtrace is created but not filled in
1598
1599 // No-op if stack trace is disabled
1600 if (!StackTraceInThrowable) return;
1601
1602 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1603 objArrayHandle backtrace (THREAD, h_oop);
1604 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1605 objArrayHandle methods (THREAD, m_oop);
1606 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1607 typeArrayHandle bcis(THREAD, b);
1608
1609 // backtrace has space for one chunk (next is NULL)
1610 backtrace->obj_at_put(trace_methods_offset, methods());
1611 backtrace->obj_at_put(trace_bcis_offset, bcis());
1612 set_backtrace(throwable(), backtrace());
1613 }
1614
1615
1616 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1617 // Fill in stack trace into preallocated backtrace (no GC)
1618
1619 // No-op if stack trace is disabled
1620 if (!StackTraceInThrowable) return;
1621
1622 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1623
1624 oop backtrace = java_lang_Throwable::backtrace(throwable());
1625 assert(backtrace != NULL, "backtrace not preallocated");
1626
1627 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset);
1628 objArrayOop methods = objArrayOop(m);
1629 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1630
1631 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset);
1632 typeArrayOop bcis = typeArrayOop(b);
1633 assert(bcis != NULL, "bci array not preallocated");
1634
1635 assert(methods->length() == bcis->length(), "method and bci arrays should match");
1636
1637 JavaThread* thread = JavaThread::current();
1638 ResourceMark rm(thread);
1639 vframeStream st(thread);
1640
1641 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1642 // methods as preallocated errors aren't created by "java" code.
1643
1644 // fill in as much stack trace as possible
1645 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1646 int chunk_count = 0;
1647
1648 for (;!st.at_end(); st.next()) {
1649 // Add entry and smear the -1 bci to 0 since the array only holds
1650 // unsigned shorts. The later line number lookup would just smear
1651 // the -1 to a 0 even if it could be recorded.
1652 int bci = st.bci();
1653 if (bci == SynchronizationEntryBCI) bci = 0;
1654 assert(bci == (jushort)bci, "doesn't fit");
1655 bcis->ushort_at_put(chunk_count, bci);
1656 methods->obj_at_put(chunk_count, st.method());
1657
1658 chunk_count++;
1659
1660 // Bail-out for deep stacks
1661 if (chunk_count >= max_chunks) break;
1662 }
1663
1664 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support
1665 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround
1666 // can be removed in a JDK using this JVM version
1667 if (JDK_Version::is_gte_jdk17x_version()) {
1668 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1669 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1670 }
1671
1672 }
1673
1674
1675 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1676 if (throwable == NULL) {
1677 THROW_0(vmSymbols::java_lang_NullPointerException());
1678 }
1679 objArrayOop chunk = objArrayOop(backtrace(throwable));
1680 int depth = 0;
1681 if (chunk != NULL) {
1682 // Iterate over chunks and count full ones
1683 while (true) {
1684 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1685 if (next == NULL) break;
1686 depth += trace_chunk_size;
1687 chunk = next;
1688 }
1689 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1690 // Count element in remaining partial chunk
1691 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1692 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1693 assert(methods != NULL && bcis != NULL, "sanity check");
1694 for (int i = 0; i < methods->length(); i++) {
1695 if (methods->obj_at(i) == NULL) break;
1696 depth++;
1697 }
1698 }
1699 return depth;
1700 }
1701
1702
1703 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1704 if (throwable == NULL) {
1705 THROW_0(vmSymbols::java_lang_NullPointerException());
1706 }
1707 if (index < 0) {
1708 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1709 }
1710 // Compute how many chunks to skip and index into actual chunk
1711 objArrayOop chunk = objArrayOop(backtrace(throwable));
1712 int skip_chunks = index / trace_chunk_size;
1713 int chunk_index = index % trace_chunk_size;
1714 while (chunk != NULL && skip_chunks > 0) {
1715 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1716 skip_chunks--;
1717 }
1718 if (chunk == NULL) {
1719 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1720 }
1721 // Get method,bci from chunk
1722 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1723 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1724 assert(methods != NULL && bcis != NULL, "sanity check");
1725 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index)));
1726 int bci = bcis->ushort_at(chunk_index);
1727 // Chunk can be partial full
1728 if (method.is_null()) {
1729 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1730 }
1731
1732 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1733 return element;
1734 }
1735
1736 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1737 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1738 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1739
1740 // Allocate java.lang.StackTraceElement instance
1741 klassOop k = SystemDictionary::StackTraceElement_klass();
1742 assert(k != NULL, "must be loaded in 1.4+");
1743 instanceKlassHandle ik (THREAD, k);
1744 if (ik->should_be_initialized()) {
1745 ik->initialize(CHECK_0);
1746 }
1747
1748 Handle element = ik->allocate_instance_handle(CHECK_0);
1749 // Fill in class name
1750 ResourceMark rm(THREAD);
1751 const char* str = instanceKlass::cast(method->method_holder())->external_name();
1752 oop classname = StringTable::intern((char*) str, CHECK_0);
1753 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1754 // Fill in method name
1755 oop methodname = StringTable::intern(method->name(), CHECK_0);
1756 java_lang_StackTraceElement::set_methodName(element(), methodname);
1757 // Fill in source file name
1758 Symbol* source = instanceKlass::cast(method->method_holder())->source_file_name();
1759 if (ShowHiddenFrames && source == NULL)
1760 source = vmSymbols::unknown_class_name();
1761 oop filename = StringTable::intern(source, CHECK_0);
1762 java_lang_StackTraceElement::set_fileName(element(), filename);
1763 // File in source line number
1764 int line_number;
1765 if (method->is_native()) {
1766 // Negative value different from -1 below, enabling Java code in
1767 // class java.lang.StackTraceElement to distinguish "native" from
1768 // "no LineNumberTable".
1769 line_number = -2;
1770 } else {
1771 // Returns -1 if no LineNumberTable, and otherwise actual line number
1772 line_number = method->line_number_from_bci(bci);
1773 if (line_number == -1 && ShowHiddenFrames) {
1774 line_number = bci + 1000000;
1775 }
1776 }
1777 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1778
1779 return element();
1780 }
1781
1782
1783 void java_lang_reflect_AccessibleObject::compute_offsets() {
1784 klassOop k = SystemDictionary::reflect_AccessibleObject_klass();
1785 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1786 }
1787
1788 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1789 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1790 return (jboolean) reflect->bool_field(override_offset);
1791 }
1792
1793 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1794 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1795 reflect->bool_field_put(override_offset, (int) value);
1796 }
1797
1798 void java_lang_reflect_Method::compute_offsets() {
1799 klassOop k = SystemDictionary::reflect_Method_klass();
1800 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1801 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1802 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1803 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1804 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1805 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1806 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1807 // The generic signature and annotations fields are only present in 1.5
1808 signature_offset = -1;
1809 annotations_offset = -1;
1810 parameter_annotations_offset = -1;
1811 annotation_default_offset = -1;
1812 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1813 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1814 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1815 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1816 }
1817
1818 Handle java_lang_reflect_Method::create(TRAPS) {
1819 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1820 klassOop klass = SystemDictionary::reflect_Method_klass();
1821 // This class is eagerly initialized during VM initialization, since we keep a refence
1822 // to one of the methods
1823 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized");
1824 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1825 }
1826
1827 oop java_lang_reflect_Method::clazz(oop reflect) {
1828 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1829 return reflect->obj_field(clazz_offset);
1830 }
1831
1832 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1833 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1834 reflect->obj_field_put(clazz_offset, value);
1835 }
1836
1837 int java_lang_reflect_Method::slot(oop reflect) {
1838 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1839 return reflect->int_field(slot_offset);
1840 }
1841
1842 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1843 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1844 reflect->int_field_put(slot_offset, value);
1845 }
1846
1847 oop java_lang_reflect_Method::name(oop method) {
1848 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1849 return method->obj_field(name_offset);
1850 }
1851
1852 void java_lang_reflect_Method::set_name(oop method, oop value) {
1853 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1854 method->obj_field_put(name_offset, value);
1855 }
1856
1857 oop java_lang_reflect_Method::return_type(oop method) {
1858 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1859 return method->obj_field(returnType_offset);
1860 }
1861
1862 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1863 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1864 method->obj_field_put(returnType_offset, value);
1865 }
1866
1867 oop java_lang_reflect_Method::parameter_types(oop method) {
1868 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1869 return method->obj_field(parameterTypes_offset);
1870 }
1871
1872 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1873 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1874 method->obj_field_put(parameterTypes_offset, value);
1875 }
1876
1877 oop java_lang_reflect_Method::exception_types(oop method) {
1878 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1879 return method->obj_field(exceptionTypes_offset);
1880 }
1881
1882 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1883 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1884 method->obj_field_put(exceptionTypes_offset, value);
1885 }
1886
1887 int java_lang_reflect_Method::modifiers(oop method) {
1888 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1889 return method->int_field(modifiers_offset);
1890 }
1891
1892 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1893 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1894 method->int_field_put(modifiers_offset, value);
1895 }
1896
1897 bool java_lang_reflect_Method::has_signature_field() {
1898 return (signature_offset >= 0);
1899 }
1900
1901 oop java_lang_reflect_Method::signature(oop method) {
1902 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1903 assert(has_signature_field(), "signature field must be present");
1904 return method->obj_field(signature_offset);
1905 }
1906
1907 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1908 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1909 assert(has_signature_field(), "signature field must be present");
1910 method->obj_field_put(signature_offset, value);
1911 }
1912
1913 bool java_lang_reflect_Method::has_annotations_field() {
1914 return (annotations_offset >= 0);
1915 }
1916
1917 oop java_lang_reflect_Method::annotations(oop method) {
1918 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1919 assert(has_annotations_field(), "annotations field must be present");
1920 return method->obj_field(annotations_offset);
1921 }
1922
1923 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1924 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1925 assert(has_annotations_field(), "annotations field must be present");
1926 method->obj_field_put(annotations_offset, value);
1927 }
1928
1929 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1930 return (parameter_annotations_offset >= 0);
1931 }
1932
1933 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1934 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1935 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1936 return method->obj_field(parameter_annotations_offset);
1937 }
1938
1939 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1940 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1941 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1942 method->obj_field_put(parameter_annotations_offset, value);
1943 }
1944
1945 bool java_lang_reflect_Method::has_annotation_default_field() {
1946 return (annotation_default_offset >= 0);
1947 }
1948
1949 oop java_lang_reflect_Method::annotation_default(oop method) {
1950 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1951 assert(has_annotation_default_field(), "annotation default field must be present");
1952 return method->obj_field(annotation_default_offset);
1953 }
1954
1955 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1956 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1957 assert(has_annotation_default_field(), "annotation default field must be present");
1958 method->obj_field_put(annotation_default_offset, value);
1959 }
1960
1961 void java_lang_reflect_Constructor::compute_offsets() {
1962 klassOop k = SystemDictionary::reflect_Constructor_klass();
1963 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1964 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1965 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1966 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1967 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1968 // The generic signature and annotations fields are only present in 1.5
1969 signature_offset = -1;
1970 annotations_offset = -1;
1971 parameter_annotations_offset = -1;
1972 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1973 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1974 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1975 }
1976
1977 Handle java_lang_reflect_Constructor::create(TRAPS) {
1978 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1979 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1980 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1981 instanceKlassHandle klass (THREAD, k);
1982 // Ensure it is initialized
1983 klass->initialize(CHECK_NH);
1984 return klass->allocate_instance_handle(CHECK_NH);
1985 }
1986
1987 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1988 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1989 return reflect->obj_field(clazz_offset);
1990 }
1991
1992 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1993 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1994 reflect->obj_field_put(clazz_offset, value);
1995 }
1996
1997 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1998 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1999 return constructor->obj_field(parameterTypes_offset);
2000 }
2001
2002 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2003 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2004 constructor->obj_field_put(parameterTypes_offset, value);
2005 }
2006
2007 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2008 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2009 return constructor->obj_field(exceptionTypes_offset);
2010 }
2011
2012 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2013 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2014 constructor->obj_field_put(exceptionTypes_offset, value);
2015 }
2016
2017 int java_lang_reflect_Constructor::slot(oop reflect) {
2018 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2019 return reflect->int_field(slot_offset);
2020 }
2021
2022 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2023 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2024 reflect->int_field_put(slot_offset, value);
2025 }
2026
2027 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2028 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2029 return constructor->int_field(modifiers_offset);
2030 }
2031
2032 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2033 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2034 constructor->int_field_put(modifiers_offset, value);
2035 }
2036
2037 bool java_lang_reflect_Constructor::has_signature_field() {
2038 return (signature_offset >= 0);
2039 }
2040
2041 oop java_lang_reflect_Constructor::signature(oop constructor) {
2042 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2043 assert(has_signature_field(), "signature field must be present");
2044 return constructor->obj_field(signature_offset);
2045 }
2046
2047 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2048 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2049 assert(has_signature_field(), "signature field must be present");
2050 constructor->obj_field_put(signature_offset, value);
2051 }
2052
2053 bool java_lang_reflect_Constructor::has_annotations_field() {
2054 return (annotations_offset >= 0);
2055 }
2056
2057 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2058 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2059 assert(has_annotations_field(), "annotations field must be present");
2060 return constructor->obj_field(annotations_offset);
2061 }
2062
2063 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2064 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2065 assert(has_annotations_field(), "annotations field must be present");
2066 constructor->obj_field_put(annotations_offset, value);
2067 }
2068
2069 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2070 return (parameter_annotations_offset >= 0);
2071 }
2072
2073 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2074 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2075 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2076 return method->obj_field(parameter_annotations_offset);
2077 }
2078
2079 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2080 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2081 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2082 method->obj_field_put(parameter_annotations_offset, value);
2083 }
2084
2085 void java_lang_reflect_Field::compute_offsets() {
2086 klassOop k = SystemDictionary::reflect_Field_klass();
2087 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2088 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2089 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2090 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2091 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2092 // The generic signature and annotations fields are only present in 1.5
2093 signature_offset = -1;
2094 annotations_offset = -1;
2095 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2096 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2097 }
2098
2099 Handle java_lang_reflect_Field::create(TRAPS) {
2100 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2101 Symbol* name = vmSymbols::java_lang_reflect_Field();
2102 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2103 instanceKlassHandle klass (THREAD, k);
2104 // Ensure it is initialized
2105 klass->initialize(CHECK_NH);
2106 return klass->allocate_instance_handle(CHECK_NH);
2107 }
2108
2109 oop java_lang_reflect_Field::clazz(oop reflect) {
2110 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2111 return reflect->obj_field(clazz_offset);
2112 }
2113
2114 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2115 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2116 reflect->obj_field_put(clazz_offset, value);
2117 }
2118
2119 oop java_lang_reflect_Field::name(oop field) {
2120 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2121 return field->obj_field(name_offset);
2122 }
2123
2124 void java_lang_reflect_Field::set_name(oop field, oop value) {
2125 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2126 field->obj_field_put(name_offset, value);
2127 }
2128
2129 oop java_lang_reflect_Field::type(oop field) {
2130 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2131 return field->obj_field(type_offset);
2132 }
2133
2134 void java_lang_reflect_Field::set_type(oop field, oop value) {
2135 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2136 field->obj_field_put(type_offset, value);
2137 }
2138
2139 int java_lang_reflect_Field::slot(oop reflect) {
2140 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2141 return reflect->int_field(slot_offset);
2142 }
2143
2144 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2145 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2146 reflect->int_field_put(slot_offset, value);
2147 }
2148
2149 int java_lang_reflect_Field::modifiers(oop field) {
2150 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2151 return field->int_field(modifiers_offset);
2152 }
2153
2154 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2155 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2156 field->int_field_put(modifiers_offset, value);
2157 }
2158
2159 bool java_lang_reflect_Field::has_signature_field() {
2160 return (signature_offset >= 0);
2161 }
2162
2163 oop java_lang_reflect_Field::signature(oop field) {
2164 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2165 assert(has_signature_field(), "signature field must be present");
2166 return field->obj_field(signature_offset);
2167 }
2168
2169 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2170 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2171 assert(has_signature_field(), "signature field must be present");
2172 field->obj_field_put(signature_offset, value);
2173 }
2174
2175 bool java_lang_reflect_Field::has_annotations_field() {
2176 return (annotations_offset >= 0);
2177 }
2178
2179 oop java_lang_reflect_Field::annotations(oop field) {
2180 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2181 assert(has_annotations_field(), "annotations field must be present");
2182 return field->obj_field(annotations_offset);
2183 }
2184
2185 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2186 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2187 assert(has_annotations_field(), "annotations field must be present");
2188 field->obj_field_put(annotations_offset, value);
2189 }
2190
2191
2192 void sun_reflect_ConstantPool::compute_offsets() {
2193 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2194 // This null test can be removed post beta
2195 if (k != NULL) {
2196 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature());
2197 }
2198 }
2199
2200
2201 Handle sun_reflect_ConstantPool::create(TRAPS) {
2202 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2203 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2204 instanceKlassHandle klass (THREAD, k);
2205 // Ensure it is initialized
2206 klass->initialize(CHECK_NH);
2207 return klass->allocate_instance_handle(CHECK_NH);
2208 }
2209
2210
2211 oop sun_reflect_ConstantPool::cp_oop(oop reflect) {
2212 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2213 return reflect->obj_field(_cp_oop_offset);
2214 }
2215
2216
2217 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) {
2218 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2219 reflect->obj_field_put(_cp_oop_offset, value);
2220 }
2221
2222 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2223 klassOop k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2224 // This null test can be removed post beta
2225 if (k != NULL) {
2226 compute_offset(_base_offset, k,
2227 vmSymbols::base_name(), vmSymbols::object_signature());
2228 }
2229 }
2230
2231 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2232 klassOop k = SystemDictionary::box_klass(type);
2233 if (k == NULL) return NULL;
2234 instanceKlassHandle h (THREAD, k);
2235 if (!h->is_initialized()) h->initialize(CHECK_0);
2236 return h->allocate_instance(THREAD);
2237 }
2238
2239
2240 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2241 oop box = initialize_and_allocate(type, CHECK_0);
2242 if (box == NULL) return NULL;
2243 switch (type) {
2244 case T_BOOLEAN:
2245 box->bool_field_put(value_offset, value->z);
2246 break;
2247 case T_CHAR:
2248 box->char_field_put(value_offset, value->c);
2249 break;
2250 case T_FLOAT:
2251 box->float_field_put(value_offset, value->f);
2252 break;
2253 case T_DOUBLE:
2254 box->double_field_put(long_value_offset, value->d);
2255 break;
2256 case T_BYTE:
2257 box->byte_field_put(value_offset, value->b);
2258 break;
2259 case T_SHORT:
2260 box->short_field_put(value_offset, value->s);
2261 break;
2262 case T_INT:
2263 box->int_field_put(value_offset, value->i);
2264 break;
2265 case T_LONG:
2266 box->long_field_put(long_value_offset, value->j);
2267 break;
2268 default:
2269 return NULL;
2270 }
2271 return box;
2272 }
2273
2274
2275 BasicType java_lang_boxing_object::basic_type(oop box) {
2276 if (box == NULL) return T_ILLEGAL;
2277 BasicType type = SystemDictionary::box_klass_type(box->klass());
2278 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2279 return T_ILLEGAL;
2280 return type;
2281 }
2282
2283
2284 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2285 BasicType type = SystemDictionary::box_klass_type(box->klass());
2286 switch (type) {
2287 case T_BOOLEAN:
2288 value->z = box->bool_field(value_offset);
2289 break;
2290 case T_CHAR:
2291 value->c = box->char_field(value_offset);
2292 break;
2293 case T_FLOAT:
2294 value->f = box->float_field(value_offset);
2295 break;
2296 case T_DOUBLE:
2297 value->d = box->double_field(long_value_offset);
2298 break;
2299 case T_BYTE:
2300 value->b = box->byte_field(value_offset);
2301 break;
2302 case T_SHORT:
2303 value->s = box->short_field(value_offset);
2304 break;
2305 case T_INT:
2306 value->i = box->int_field(value_offset);
2307 break;
2308 case T_LONG:
2309 value->j = box->long_field(long_value_offset);
2310 break;
2311 default:
2312 return T_ILLEGAL;
2313 } // end switch
2314 return type;
2315 }
2316
2317
2318 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2319 BasicType type = SystemDictionary::box_klass_type(box->klass());
2320 switch (type) {
2321 case T_BOOLEAN:
2322 box->bool_field_put(value_offset, value->z);
2323 break;
2324 case T_CHAR:
2325 box->char_field_put(value_offset, value->c);
2326 break;
2327 case T_FLOAT:
2328 box->float_field_put(value_offset, value->f);
2329 break;
2330 case T_DOUBLE:
2331 box->double_field_put(long_value_offset, value->d);
2332 break;
2333 case T_BYTE:
2334 box->byte_field_put(value_offset, value->b);
2335 break;
2336 case T_SHORT:
2337 box->short_field_put(value_offset, value->s);
2338 break;
2339 case T_INT:
2340 box->int_field_put(value_offset, value->i);
2341 break;
2342 case T_LONG:
2343 box->long_field_put(long_value_offset, value->j);
2344 break;
2345 default:
2346 return T_ILLEGAL;
2347 } // end switch
2348 return type;
2349 }
2350
2351
2352 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2353 switch (type) {
2354 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2355 case T_CHAR: st->print("%d", value->c); break;
2356 case T_BYTE: st->print("%d", value->b); break;
2357 case T_SHORT: st->print("%d", value->s); break;
2358 case T_INT: st->print("%d", value->i); break;
2359 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2360 case T_FLOAT: st->print("%f", value->f); break;
2361 case T_DOUBLE: st->print("%lf", value->d); break;
2362 default: st->print("type %d?", type); break;
2363 }
2364 }
2365
2366
2367 // Support for java_lang_ref_Reference
2368 oop java_lang_ref_Reference::pending_list_lock() {
2369 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2370 address addr = ik->static_field_addr(static_lock_offset);
2371 if (UseCompressedOops) {
2372 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2373 } else {
2374 return oopDesc::load_decode_heap_oop((oop*)addr);
2375 }
2376 }
2377
2378 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2379 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2380 address addr = ik->static_field_addr(static_pending_offset);
2381 // XXX This might not be HeapWord aligned, almost rather be char *.
2382 return (HeapWord*)addr;
2383 }
2384
2385 oop java_lang_ref_Reference::pending_list() {
2386 char *addr = (char *)pending_list_addr();
2387 if (UseCompressedOops) {
2388 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2389 } else {
2390 return oopDesc::load_decode_heap_oop((oop*)addr);
2391 }
2392 }
2393
2394
2395 // Support for java_lang_ref_SoftReference
2396
2397 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2398 return ref->long_field(timestamp_offset);
2399 }
2400
2401 jlong java_lang_ref_SoftReference::clock() {
2402 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2403 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2404 return *offset;
2405 }
2406
2407 void java_lang_ref_SoftReference::set_clock(jlong value) {
2408 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2409 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2410 *offset = value;
2411 }
2412
2413 // Support for java_lang_invoke_DirectMethodHandle
2414
2415 int java_lang_invoke_DirectMethodHandle::_member_offset;
2416
2417 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
2418 oop member_name = NULL;
2419 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
2420 assert(is_dmh, "a DirectMethodHandle oop is expected");
2421 if (is_dmh) {
2422 member_name = dmh->obj_field(member_offset_in_bytes());
2423 }
2424 return member_name;
2425 }
2426
2427 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2428 klassOop klass_oop = SystemDictionary::DirectMethodHandle_klass();
2429 if (klass_oop != NULL && EnableInvokeDynamic) {
2430 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2431 }
2432 }
2433
2434 // Support for java_lang_invoke_MethodHandle
2435
2436 int java_lang_invoke_MethodHandle::_type_offset;
2437 int java_lang_invoke_MethodHandle::_form_offset;
2438
2439 int java_lang_invoke_MemberName::_clazz_offset;
2440 int java_lang_invoke_MemberName::_name_offset;
2441 int java_lang_invoke_MemberName::_type_offset;
2442 int java_lang_invoke_MemberName::_flags_offset;
2443 int java_lang_invoke_MemberName::_vmtarget_offset;
2444 int java_lang_invoke_MemberName::_vmindex_offset;
2445
2446 int java_lang_invoke_LambdaForm::_vmentry_offset;
2447
2448 void java_lang_invoke_MethodHandle::compute_offsets() {
2449 klassOop klass_oop = SystemDictionary::MethodHandle_klass();
2450 if (klass_oop != NULL && EnableInvokeDynamic) {
2451 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2452 compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2453 if (_form_offset == 0) {
2454 EnableInvokeDynamic = false;
2455 }
2456 }
2457 }
2458
2459 void java_lang_invoke_MemberName::compute_offsets() {
2460 klassOop klass_oop = SystemDictionary::MemberName_klass();
2461 if (klass_oop != NULL && EnableInvokeDynamic) {
2462 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2463 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2464 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2465 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2466 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2467 }
2468 }
2469
2470 void java_lang_invoke_LambdaForm::compute_offsets() {
2471 klassOop klass_oop = SystemDictionary::LambdaForm_klass();
2472 if (klass_oop != NULL && EnableInvokeDynamic) {
2473 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2474 }
2475 }
2476
2477 oop java_lang_invoke_MethodHandle::type(oop mh) {
2478 return mh->obj_field(_type_offset);
2479 }
2480
2481 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2482 mh->obj_field_put(_type_offset, mtype);
2483 }
2484
2485 oop java_lang_invoke_MethodHandle::form(oop mh) {
2486 assert(_form_offset != 0, "");
2487 return mh->obj_field(_form_offset);
2488 }
2489
2490 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2491 assert(_form_offset != 0, "");
2492 mh->obj_field_put(_form_offset, lform);
2493 }
2494
2495 /// MemberName accessors
2496
2497 oop java_lang_invoke_MemberName::clazz(oop mname) {
2498 assert(is_instance(mname), "wrong type");
2499 return mname->obj_field(_clazz_offset);
2500 }
2501
2502 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2503 assert(is_instance(mname), "wrong type");
2504 mname->obj_field_put(_clazz_offset, clazz);
2505 }
2506
2507 oop java_lang_invoke_MemberName::name(oop mname) {
2508 assert(is_instance(mname), "wrong type");
2509 return mname->obj_field(_name_offset);
2510 }
2511
2512 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2513 assert(is_instance(mname), "wrong type");
2514 mname->obj_field_put(_name_offset, name);
2515 }
2516
2517 oop java_lang_invoke_MemberName::type(oop mname) {
2518 assert(is_instance(mname), "wrong type");
2519 return mname->obj_field(_type_offset);
2520 }
2521
2522 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2523 assert(is_instance(mname), "wrong type");
2524 mname->obj_field_put(_type_offset, type);
2525 }
2526
2527 int java_lang_invoke_MemberName::flags(oop mname) {
2528 assert(is_instance(mname), "wrong type");
2529 return mname->int_field(_flags_offset);
2530 }
2531
2532 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2533 assert(is_instance(mname), "wrong type");
2534 mname->int_field_put(_flags_offset, flags);
2535 }
2536
2537 oop java_lang_invoke_MemberName::vmtarget(oop mname) {
2538 assert(is_instance(mname), "wrong type");
2539 return mname->obj_field(_vmtarget_offset);
2540 }
2541
2542 bool java_lang_invoke_MemberName::is_method(oop mname) {
2543 assert(is_instance(mname), "must be MemberName");
2544 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
2545 }
2546
2547 // Can be executed on VM thread only
2548 void java_lang_invoke_MemberName::adjust_vmtarget(oop mname, methodOop old_method,
2549 methodOop new_method, bool* trace_name_printed) {
2550 assert(is_method(mname), "wrong type");
2551 assert(Thread::current()->is_VM_thread(), "not VM thread");
2552
2553 methodOop target = (methodOop) mname->obj_field(_vmtarget_offset);
2554
2555 if (target == old_method) {
2556 mname->obj_field_put(_vmtarget_offset, new_method);
2557
2558 if (RC_TRACE_IN_RANGE(0x00100000, 0x00400000)) {
2559 if (!(*trace_name_printed)) {
2560 // RC_TRACE_MESG macro has an embedded ResourceMark
2561 RC_TRACE_MESG(("adjust: name=%s",
2562 instanceKlass::cast(old_method->method_holder())->external_name()));
2563 *trace_name_printed = true;
2564 }
2565 // RC_TRACE macro has an embedded ResourceMark
2566 RC_TRACE(0x00400000, ("MemberName method update: %s(%s)",
2567 new_method->name()->as_C_string(),
2568 new_method->signature()->as_C_string()));
2569 }
2570 }
2571 }
2572
2573 void java_lang_invoke_MemberName::set_vmtarget(oop mname, oop ref) {
2574 assert(is_instance(mname), "wrong type");
2575 #ifdef ASSERT
2576 // check the type of the vmtarget
2577 if (ref != NULL) {
2578 switch (flags(mname) & (MN_IS_METHOD |
2579 MN_IS_CONSTRUCTOR |
2580 MN_IS_FIELD)) {
2581 case MN_IS_METHOD:
2582 case MN_IS_CONSTRUCTOR:
2583 assert(ref->is_method(), "should be a method");
2584 break;
2585 case MN_IS_FIELD:
2586 assert(ref->is_klass(), "should be a class");
2587 break;
2588 default:
2589 ShouldNotReachHere();
2590 }
2591 }
2592 #endif //ASSERT
2593 mname->obj_field_put(_vmtarget_offset, ref);
2594 }
2595
2596 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2597 assert(is_instance(mname), "wrong type");
2598 return (intptr_t) mname->address_field(_vmindex_offset);
2599 }
2600
2601 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2602 assert(is_instance(mname), "wrong type");
2603 mname->address_field_put(_vmindex_offset, (address) index);
2604 }
2605
2606 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2607 assert(is_instance(lform), "wrong type");
2608 return lform->obj_field(_vmentry_offset);
2609 }
2610
2611
2612 // Support for java_lang_invoke_MethodType
2613
2614 int java_lang_invoke_MethodType::_rtype_offset;
2615 int java_lang_invoke_MethodType::_ptypes_offset;
2616
2617 void java_lang_invoke_MethodType::compute_offsets() {
2618 klassOop k = SystemDictionary::MethodType_klass();
2619 if (k != NULL) {
2620 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2621 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2622 }
2623 }
2624
2625 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2626 st->print("(");
2627 objArrayOop pts = ptypes(mt);
2628 for (int i = 0, limit = pts->length(); i < limit; i++) {
2629 java_lang_Class::print_signature(pts->obj_at(i), st);
2630 }
2631 st->print(")");
2632 java_lang_Class::print_signature(rtype(mt), st);
2633 }
2634
2635 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2636 ResourceMark rm;
2637 stringStream buffer(128);
2638 print_signature(mt, &buffer);
2639 const char* sigstr = buffer.base();
2640 int siglen = (int) buffer.size();
2641 Symbol *name;
2642 if (!intern_if_not_found) {
2643 name = SymbolTable::probe(sigstr, siglen);
2644 } else {
2645 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2646 }
2647 return name;
2648 }
2649
2650 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2651 if (mt1 == mt2)
2652 return true;
2653 if (rtype(mt1) != rtype(mt2))
2654 return false;
2655 if (ptype_count(mt1) != ptype_count(mt2))
2656 return false;
2657 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2658 if (ptype(mt1, i) != ptype(mt2, i))
2659 return false;
2660 }
2661 return true;
2662 }
2663
2664 oop java_lang_invoke_MethodType::rtype(oop mt) {
2665 assert(is_instance(mt), "must be a MethodType");
2666 return mt->obj_field(_rtype_offset);
2667 }
2668
2669 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2670 assert(is_instance(mt), "must be a MethodType");
2671 return (objArrayOop) mt->obj_field(_ptypes_offset);
2672 }
2673
2674 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2675 return ptypes(mt)->obj_at(idx);
2676 }
2677
2678 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2679 return ptypes(mt)->length();
2680 }
2681
2682 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2683 objArrayOop pts = ptypes(mt);
2684 int count = pts->length();
2685 int slots = 0;
2686 for (int i = 0; i < count; i++) {
2687 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2688 slots += type2size[bt];
2689 }
2690 return slots;
2691 }
2692
2693 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2694 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2695 return type2size[bt];
2696 }
2697
2698
2699 // Support for java_lang_invoke_CallSite
2700
2701 int java_lang_invoke_CallSite::_target_offset;
2702
2703 void java_lang_invoke_CallSite::compute_offsets() {
2704 if (!EnableInvokeDynamic) return;
2705 klassOop k = SystemDictionary::CallSite_klass();
2706 if (k != NULL) {
2707 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2708 }
2709 }
2710
2711
2712 // Support for java_security_AccessControlContext
2713
2714 int java_security_AccessControlContext::_context_offset = 0;
2715 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2716 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2717 int java_security_AccessControlContext::_isAuthorized_offset = -1;
2718
2719 void java_security_AccessControlContext::compute_offsets() {
2720 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2721 fieldDescriptor fd;
2722 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2723
2724 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2725 fatal("Invalid layout of java.security.AccessControlContext");
2726 }
2727 _context_offset = fd.offset();
2728
2729 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2730 fatal("Invalid layout of java.security.AccessControlContext");
2731 }
2732 _privilegedContext_offset = fd.offset();
2733
2734 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2735 fatal("Invalid layout of java.security.AccessControlContext");
2736 }
2737 _isPrivileged_offset = fd.offset();
2738
2739
2740 // The offset may not be present for bootstrapping with older JDK.
2741 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
2742 _isAuthorized_offset = fd.offset();
2743 }
2744 }
2745
2746
2747 bool java_security_AccessControlContext::is_authorized(Handle context) {
2748 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
2749 assert(_isAuthorized_offset != -1, "should be set");
2750 return context->bool_field(_isAuthorized_offset) != 0;
2751 }
2752
2753
2754 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2755 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2756 // Ensure klass is initialized
2757 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2758 // Allocate result
2759 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2760 // Fill in values
2761 result->obj_field_put(_context_offset, context());
2762 result->obj_field_put(_privilegedContext_offset, privileged_context());
2763 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2764 // whitelist AccessControlContexts created by the JVM if present
2765 if (_isAuthorized_offset != -1) {
2766 result->bool_field_put(_isAuthorized_offset, true);
2767 }
2768 return result;
2769 }
2770
2771
2772 // Support for java_lang_ClassLoader
2773 bool java_lang_ClassLoader::offsets_computed = false;
2774 int java_lang_ClassLoader::parallelCapable_offset = -1;
2775
2776 void java_lang_ClassLoader::compute_offsets() {
2777 assert(!offsets_computed, "offsets should be initialized only once");
2778 offsets_computed = true;
2779
2780 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
2781 klassOop k1 = SystemDictionary::ClassLoader_klass();
2782 compute_optional_offset(parallelCapable_offset,
2783 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
2784 }
2785
2786 oop java_lang_ClassLoader::parent(oop loader) {
2787 assert(is_instance(loader), "loader must be oop");
2788 return loader->obj_field(parent_offset);
2789 }
2790
2791 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
2792 assert(is_instance(loader), "loader must be oop");
2793 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
2794 oop acl = loader;
2795 debug_only(jint loop_count = 0);
2796 // This loop taken verbatim from ClassLoader.java:
2797 do {
2798 acl = parent(acl);
2799 if (cl == acl) {
2800 return true;
2801 }
2802 assert(++loop_count > 0, "loop_count overflow");
2803 } while (acl != NULL);
2804 return false;
2805 }
2806
2807
2808 // For class loader classes, parallelCapable defined
2809 // based on non-null field
2810 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
2811 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
2812 if (!JDK_Version::is_gte_jdk17x_version()
2813 || parallelCapable_offset == -1) {
2814 // Default for backward compatibility is false
2815 return false;
2816 }
2817 return (class_loader->obj_field(parallelCapable_offset) != NULL);
2818 }
2819
2820 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2821 // Fix for 4474172; see evaluation for more details
2822 loader = non_reflection_class_loader(loader);
2823
2824 oop cl = SystemDictionary::java_system_loader();
2825 while(cl != NULL) {
2826 if (cl == loader) return true;
2827 cl = parent(cl);
2828 }
2829 return false;
2830 }
2831
2832 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2833 if (loader != NULL) {
2834 // See whether this is one of the class loaders associated with
2835 // the generated bytecodes for reflection, and if so, "magically"
2836 // delegate to its parent to prevent class loading from occurring
2837 // in places where applications using reflection didn't expect it.
2838 klassOop delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2839 // This might be null in non-1.4 JDKs
2840 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2841 return parent(loader);
2842 }
2843 }
2844 return loader;
2845 }
2846
2847
2848 // Support for java_lang_System
2849 int java_lang_System::in_offset_in_bytes() {
2850 return (instanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2851 }
2852
2853
2854 int java_lang_System::out_offset_in_bytes() {
2855 return (instanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2856 }
2857
2858
2859 int java_lang_System::err_offset_in_bytes() {
2860 return (instanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2861 }
2862
2863 bool java_lang_System::has_security_manager() {
2864 instanceKlass* ik = instanceKlass::cast(SystemDictionary::System_klass());
2865 address addr = ik->static_field_addr(static_security_offset);
2866 if (UseCompressedOops) {
2867 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
2868 } else {
2869 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
2870 }
2871 }
2872
2873
2874 int java_lang_Class::_klass_offset;
2875 int java_lang_Class::_array_klass_offset;
2876 int java_lang_Class::_resolved_constructor_offset;
2877 int java_lang_Class::_oop_size_offset;
2878 int java_lang_Class::_static_oop_field_count_offset;
2879 int java_lang_Class::_class_loader_offset;
2880 int java_lang_Throwable::backtrace_offset;
2881 int java_lang_Throwable::detailMessage_offset;
2882 int java_lang_Throwable::cause_offset;
2883 int java_lang_Throwable::stackTrace_offset;
2884 int java_lang_Throwable::static_unassigned_stacktrace_offset;
2885 int java_lang_reflect_AccessibleObject::override_offset;
2886 int java_lang_reflect_Method::clazz_offset;
2887 int java_lang_reflect_Method::name_offset;
2888 int java_lang_reflect_Method::returnType_offset;
2889 int java_lang_reflect_Method::parameterTypes_offset;
2890 int java_lang_reflect_Method::exceptionTypes_offset;
2891 int java_lang_reflect_Method::slot_offset;
2892 int java_lang_reflect_Method::modifiers_offset;
2893 int java_lang_reflect_Method::signature_offset;
2894 int java_lang_reflect_Method::annotations_offset;
2895 int java_lang_reflect_Method::parameter_annotations_offset;
2896 int java_lang_reflect_Method::annotation_default_offset;
2897 int java_lang_reflect_Constructor::clazz_offset;
2898 int java_lang_reflect_Constructor::parameterTypes_offset;
2899 int java_lang_reflect_Constructor::exceptionTypes_offset;
2900 int java_lang_reflect_Constructor::slot_offset;
2901 int java_lang_reflect_Constructor::modifiers_offset;
2902 int java_lang_reflect_Constructor::signature_offset;
2903 int java_lang_reflect_Constructor::annotations_offset;
2904 int java_lang_reflect_Constructor::parameter_annotations_offset;
2905 int java_lang_reflect_Field::clazz_offset;
2906 int java_lang_reflect_Field::name_offset;
2907 int java_lang_reflect_Field::type_offset;
2908 int java_lang_reflect_Field::slot_offset;
2909 int java_lang_reflect_Field::modifiers_offset;
2910 int java_lang_reflect_Field::signature_offset;
2911 int java_lang_reflect_Field::annotations_offset;
2912 int java_lang_boxing_object::value_offset;
2913 int java_lang_boxing_object::long_value_offset;
2914 int java_lang_ref_Reference::referent_offset;
2915 int java_lang_ref_Reference::queue_offset;
2916 int java_lang_ref_Reference::next_offset;
2917 int java_lang_ref_Reference::discovered_offset;
2918 int java_lang_ref_Reference::static_lock_offset;
2919 int java_lang_ref_Reference::static_pending_offset;
2920 int java_lang_ref_Reference::number_of_fake_oop_fields;
2921 int java_lang_ref_SoftReference::timestamp_offset;
2922 int java_lang_ref_SoftReference::static_clock_offset;
2923 int java_lang_ClassLoader::parent_offset;
2924 int java_lang_System::static_in_offset;
2925 int java_lang_System::static_out_offset;
2926 int java_lang_System::static_err_offset;
2927 int java_lang_System::static_security_offset;
2928 int java_lang_StackTraceElement::declaringClass_offset;
2929 int java_lang_StackTraceElement::methodName_offset;
2930 int java_lang_StackTraceElement::fileName_offset;
2931 int java_lang_StackTraceElement::lineNumber_offset;
2932 int java_lang_AssertionStatusDirectives::classes_offset;
2933 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2934 int java_lang_AssertionStatusDirectives::packages_offset;
2935 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2936 int java_lang_AssertionStatusDirectives::deflt_offset;
2937 int java_nio_Buffer::_limit_offset;
2938 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2939 int sun_reflect_ConstantPool::_cp_oop_offset;
2940 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2941
2942
2943 // Support for java_lang_StackTraceElement
2944
2945 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2946 element->obj_field_put(fileName_offset, value);
2947 }
2948
2949 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2950 element->obj_field_put(declaringClass_offset, value);
2951 }
2952
2953 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2954 element->obj_field_put(methodName_offset, value);
2955 }
2956
2957 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2958 element->int_field_put(lineNumber_offset, value);
2959 }
2960
2961
2962 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2963
2964 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2965 o->obj_field_put(classes_offset, val);
2966 }
2967
2968 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2969 o->obj_field_put(classEnabled_offset, val);
2970 }
2971
2972 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2973 o->obj_field_put(packages_offset, val);
2974 }
2975
2976 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2977 o->obj_field_put(packageEnabled_offset, val);
2978 }
2979
2980 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2981 o->bool_field_put(deflt_offset, val);
2982 }
2983
2984
2985 // Support for intrinsification of java.nio.Buffer.checkIndex
2986 int java_nio_Buffer::limit_offset() {
2987 return _limit_offset;
2988 }
2989
2990
2991 void java_nio_Buffer::compute_offsets() {
2992 klassOop k = SystemDictionary::nio_Buffer_klass();
2993 assert(k != NULL, "must be loaded in 1.4+");
2994 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2995 }
2996
2997 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2998 if (_owner_offset != 0) return;
2999
3000 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
3001 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3002 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass();
3003 compute_offset(_owner_offset, k,
3004 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3005 }
3006
3007 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3008 assert(_owner_offset != 0, "Must be initialized");
3009 return obj->obj_field(_owner_offset);
3010 }
3011
3012 // Compute hard-coded offsets
3013 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3014 // are not available to determine the offset_of_static_fields.
3015 void JavaClasses::compute_hard_coded_offsets() {
3016 const int x = heapOopSize;
3017 const int header = instanceOopDesc::base_offset_in_bytes();
3018
3019 // Throwable Class
3020 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3021 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3022 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3023 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3024 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3025
3026 // java_lang_boxing_object
3027 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3028 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3029
3030 // java_lang_ref_Reference:
3031 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3032 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3033 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3034 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3035 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3036 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3037 // Artificial fields for java_lang_ref_Reference
3038 // The first field is for the discovered field added in 1.4
3039 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3040
3041 // java_lang_ref_SoftReference Class
3042 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3043 // Don't multiply static fields because they are always in wordSize units
3044 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3045
3046 // java_lang_ClassLoader
3047 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3048
3049 // java_lang_System
3050 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3051 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3052 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3053 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3054
3055 // java_lang_StackTraceElement
3056 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3057 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3058 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3059 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3060 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3061 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3062 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3063 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3064 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3065
3066 }
3067
3068
3069 // Compute non-hard-coded field offsets of all the classes in this file
3070 void JavaClasses::compute_offsets() {
3071 // java_lang_Class::compute_offsets was called earlier in bootstrap
3072 java_lang_ClassLoader::compute_offsets();
3073 java_lang_Thread::compute_offsets();
3074 java_lang_ThreadGroup::compute_offsets();
3075 if (EnableInvokeDynamic) {
3076 java_lang_invoke_MethodHandle::compute_offsets();
3077 java_lang_invoke_DirectMethodHandle::compute_offsets();
3078 java_lang_invoke_MemberName::compute_offsets();
3079 java_lang_invoke_LambdaForm::compute_offsets();
3080 java_lang_invoke_MethodType::compute_offsets();
3081 java_lang_invoke_CallSite::compute_offsets();
3082 }
3083 java_security_AccessControlContext::compute_offsets();
3084 // Initialize reflection classes. The layouts of these classes
3085 // changed with the new reflection implementation in JDK 1.4, and
3086 // since the Universe doesn't know what JDK version it is until this
3087 // point we defer computation of these offsets until now.
3088 java_lang_reflect_AccessibleObject::compute_offsets();
3089 java_lang_reflect_Method::compute_offsets();
3090 java_lang_reflect_Constructor::compute_offsets();
3091 java_lang_reflect_Field::compute_offsets();
3092 if (JDK_Version::is_gte_jdk14x_version()) {
3093 java_nio_Buffer::compute_offsets();
3094 }
3095 if (JDK_Version::is_gte_jdk15x_version()) {
3096 sun_reflect_ConstantPool::compute_offsets();
3097 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3098 }
3099
3100 // generated interpreter code wants to know about the offsets we just computed:
3101 AbstractAssembler::update_delayed_values();
3102 }
3103
3104 #ifndef PRODUCT
3105
3106 // These functions exist to assert the validity of hard-coded field offsets to guard
3107 // against changes in the class files
3108
3109 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3110 EXCEPTION_MARK;
3111 fieldDescriptor fd;
3112 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3113 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3114 instanceKlassHandle h_klass (THREAD, k);
3115 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3116 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3117 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3118 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3119 return false;
3120 }
3121 if (fd.is_static()) {
3122 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3123 return false;
3124 }
3125 if (fd.offset() == hardcoded_offset ) {
3126 return true;
3127 } else {
3128 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3129 klass_name, field_name, hardcoded_offset, fd.offset());
3130 return false;
3131 }
3132 }
3133
3134
3135 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3136 EXCEPTION_MARK;
3137 fieldDescriptor fd;
3138 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3139 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3140 instanceKlassHandle h_klass (THREAD, k);
3141 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3142 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3143 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3144 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3145 return false;
3146 }
3147 if (!fd.is_static()) {
3148 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3149 return false;
3150 }
3151 if (fd.offset() == hardcoded_offset + instanceMirrorKlass::offset_of_static_fields()) {
3152 return true;
3153 } else {
3154 tty->print_cr("Offset of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_offset, fd.offset() - instanceMirrorKlass::offset_of_static_fields());
3155 return false;
3156 }
3157 }
3158
3159
3160 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3161 EXCEPTION_MARK;
3162 fieldDescriptor fd;
3163 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3164 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3165 instanceKlassHandle h_klass (THREAD, k);
3166 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3167 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3168 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3169 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3170 return false;
3171 }
3172 if (!fd.is_static() || !fd.has_initial_value()) {
3173 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3174 return false;
3175 }
3176 if (!fd.initial_value_tag().is_int()) {
3177 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3178 return false;
3179 }
3180 jint field_value = fd.int_initial_value();
3181 if (field_value == hardcoded_constant) {
3182 return true;
3183 } else {
3184 tty->print_cr("Constant value of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_constant, field_value);
3185 return false;
3186 }
3187 }
3188
3189
3190 // Check the hard-coded field offsets of all the classes in this file
3191
3192 void JavaClasses::check_offsets() {
3193 bool valid = true;
3194
3195 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3196 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3197
3198 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3199 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3200
3201 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3202 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3203
3204 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3205 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3206
3207 // java.lang.String
3208
3209 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3210 if (java_lang_String::has_offset_field()) {
3211 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3212 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3213 }
3214 if (java_lang_String::has_hash_field()) {
3215 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3216 }
3217
3218 // java.lang.Class
3219
3220 // Fake fields
3221 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3222 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3223 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3224
3225 // java.lang.Throwable
3226
3227 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3228 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3229 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3230 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3231
3232 // Boxed primitive objects (java_lang_boxing_object)
3233
3234 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3235 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3236 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3237 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3238 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3239 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3240 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3241 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3242
3243 // java.lang.ClassLoader
3244
3245 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3246
3247 // java.lang.System
3248
3249 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3250 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3251 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3252 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
3253
3254 // java.lang.StackTraceElement
3255
3256 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3257 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3258 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3259 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3260
3261 // java.lang.ref.Reference
3262
3263 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3264 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3265 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3266 // Fake field
3267 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3268 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3269 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3270
3271 // java.lang.ref.SoftReference
3272
3273 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3274 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3275
3276 // java.lang.AssertionStatusDirectives
3277 //
3278 // The CheckAssertionStatusDirectives boolean can be removed from here and
3279 // globals.hpp after the AssertionStatusDirectives class has been integrated
3280 // into merlin "for some time." Without it, the vm will fail with early
3281 // merlin builds.
3282
3283 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3284 const char* nm = "java/lang/AssertionStatusDirectives";
3285 const char* sig = "[Ljava/lang/String;";
3286 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3287 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3288 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3289 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3290 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3291 }
3292
3293 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3294 }
3295
3296 #endif // PRODUCT
3297
3298 int InjectedField::compute_offset() {
3299 klassOop klass_oop = klass();
3300 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3301 if (!may_be_java && !fs.access_flags().is_internal()) {
3302 // Only look at injected fields
3303 continue;
3304 }
3305 if (fs.name() == name() && fs.signature() == signature()) {
3306 return fs.offset();
3307 }
3308 }
3309 ResourceMark rm;
3310 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)" : "");
3311 #ifndef PRODUCT
3312 klass_oop->print();
3313 tty->print_cr("all fields:");
3314 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3315 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3316 }
3317 #endif //PRODUCT
3318 fatal("Invalid layout of preloaded class");
3319 return -1;
3320 }
3321
3322 void javaClasses_init() {
3323 JavaClasses::compute_offsets();
3324 JavaClasses::check_offsets();
3325 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3326 }
3327