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