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