Thu, 07 Apr 2011 17:02:30 -0700
6981791: remove experimental code for JSR 292
Reviewed-by: twisti
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 */
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
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 }
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 }
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 }
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 }
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 }
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);
126 return h_obj;
127 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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");
181 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
182 static to_java_string_fn_t _to_java_string_fn = NULL;
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 }
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 }
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) {
206 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
207 static to_platform_string_fn_t _to_platform_string_fn = NULL;
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 }
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 }
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);
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 }
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);
256 typeArrayOop from_buffer = h_value();
257 typeArrayOop to_buffer = java_lang_String::value(string());
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 }
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);
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 }
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);
287 if (length == 0) return 0;
288 return hash_string(value->char_at_addr(offset), length);
289 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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);
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 }
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 }
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 }
442 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
443 assert(instanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
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 }
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());
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()));
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
668 bool java_lang_Class::offsets_computed = false;
669 int java_lang_Class::classRedefinedCount_offset = -1;
670 int java_lang_Class::parallelCapable_offset = -1;
672 void java_lang_Class::compute_offsets() {
673 assert(!offsets_computed, "offsets should be initialized only once");
674 offsets_computed = true;
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());
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 }
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 }
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 }
708 return the_class_mirror->int_field(classRedefinedCount_offset);
709 }
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 }
719 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
720 }
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.
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 ;
746 void java_lang_Thread::compute_offsets() {
747 assert(_group_offset == 0, "offsets should be initialized only once");
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 }
770 JavaThread* java_lang_Thread::thread(oop java_thread) {
771 return (JavaThread*)java_thread->address_field(_eetop_offset);
772 }
775 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
776 java_thread->address_field_put(_eetop_offset, (address)thread);
777 }
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 }
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 }
793 ThreadPriority java_lang_Thread::priority(oop java_thread) {
794 return (ThreadPriority)java_thread->int_field(_priority_offset);
795 }
798 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
799 java_thread->int_field_put(_priority_offset, priority);
800 }
803 oop java_lang_Thread::threadGroup(oop java_thread) {
804 return java_thread->obj_field(_group_offset);
805 }
808 bool java_lang_Thread::is_stillborn(oop java_thread) {
809 return java_thread->bool_field(_stillborn_offset) != 0;
810 }
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 }
819 bool java_lang_Thread::is_alive(oop java_thread) {
820 JavaThread* thr = java_lang_Thread::thread(java_thread);
821 return (thr != NULL);
822 }
825 bool java_lang_Thread::is_daemon(oop java_thread) {
826 return java_thread->bool_field(_daemon_offset) != 0;
827 }
830 void java_lang_Thread::set_daemon(oop java_thread) {
831 java_thread->bool_field_put(_daemon_offset, true);
832 }
834 oop java_lang_Thread::context_class_loader(oop java_thread) {
835 return java_thread->obj_field(_contextClassLoader_offset);
836 }
838 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
839 return java_thread->obj_field(_inheritedAccessControlContext_offset);
840 }
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 }
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 }
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 }
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 }
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");
899 if (_park_blocker_offset > 0) {
900 return java_thread->obj_field(_park_blocker_offset);
901 }
903 return NULL;
904 }
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 }
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 }
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;
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 }
954 // ("name as oop" accessor is not necessary)
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
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 }
1005 void java_lang_ThreadGroup::compute_offsets() {
1006 assert(_parent_offset == 0, "offsets should be initialized only once");
1008 klassOop k = SystemDictionary::ThreadGroup_klass();
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 }
1022 oop java_lang_Throwable::backtrace(oop throwable) {
1023 return throwable->obj_field_acquire(backtrace_offset);
1024 }
1027 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1028 throwable->release_obj_field_put(backtrace_offset, value);
1029 }
1032 oop java_lang_Throwable::message(oop throwable) {
1033 return throwable->obj_field(detailMessage_offset);
1034 }
1037 oop java_lang_Throwable::message(Handle throwable) {
1038 return throwable->obj_field(detailMessage_offset);
1039 }
1042 void java_lang_Throwable::set_message(oop throwable, oop value) {
1043 throwable->obj_field_put(detailMessage_offset, value);
1044 }
1047 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1048 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1049 throwable->obj_field_put(stackTrace_offset, NULL);
1050 }
1053 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1054 ResourceMark rm;
1055 klassOop k = throwable->klass();
1056 assert(k != NULL, "just checking");
1057 st->print("%s", instanceKlass::cast(k)->external_name());
1058 oop msg = message(throwable);
1059 if (msg != NULL) {
1060 st->print(": %s", java_lang_String::as_utf8_string(msg));
1061 }
1062 }
1065 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1066 ResourceMark rm;
1067 klassOop k = throwable->klass();
1068 assert(k != NULL, "just checking");
1069 st->print("%s", instanceKlass::cast(k)->external_name());
1070 oop msg = message(throwable);
1071 if (msg != NULL) {
1072 st->print(": %s", java_lang_String::as_utf8_string(msg));
1073 }
1074 }
1076 // Print stack trace element to resource allocated buffer
1077 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) {
1078 // Get strings and string lengths
1079 instanceKlass* klass = instanceKlass::cast(method->method_holder());
1080 const char* klass_name = klass->external_name();
1081 int buf_len = (int)strlen(klass_name);
1082 char* source_file_name;
1083 if (klass->source_file_name() == NULL) {
1084 source_file_name = NULL;
1085 } else {
1086 source_file_name = klass->source_file_name()->as_C_string();
1087 buf_len += (int)strlen(source_file_name);
1088 }
1089 char* method_name = method->name()->as_C_string();
1090 buf_len += (int)strlen(method_name);
1092 // Allocate temporary buffer with extra space for formatting and line number
1093 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1095 // Print stack trace line in buffer
1096 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1097 if (method->is_native()) {
1098 strcat(buf, "(Native Method)");
1099 } else {
1100 int line_number = method->line_number_from_bci(bci);
1101 if (source_file_name != NULL && (line_number != -1)) {
1102 // Sourcename and linenumber
1103 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1104 } else if (source_file_name != NULL) {
1105 // Just sourcename
1106 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1107 } else {
1108 // Neither soucename and linenumber
1109 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1110 }
1111 nmethod* nm = method->code();
1112 if (WizardMode && nm != NULL) {
1113 sprintf(buf + (int)strlen(buf), "(nmethod " PTR_FORMAT ")", (intptr_t)nm);
1114 }
1115 }
1117 return buf;
1118 }
1121 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) {
1122 ResourceMark rm;
1123 char* buf = print_stack_element_to_buffer(method, bci);
1124 print_to_stream(stream, buf);
1125 }
1127 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) {
1128 ResourceMark rm;
1129 char* buf = print_stack_element_to_buffer(method, bci);
1130 st->print_cr("%s", buf);
1131 }
1133 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) {
1134 if (stream.is_null()) {
1135 tty->print_cr("%s", str);
1136 } else {
1137 EXCEPTION_MARK;
1138 JavaValue result(T_VOID);
1139 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD));
1140 if (!HAS_PENDING_EXCEPTION) {
1141 JavaCalls::call_virtual(&result,
1142 stream,
1143 KlassHandle(THREAD, stream->klass()),
1144 vmSymbols::println_name(),
1145 vmSymbols::char_array_void_signature(),
1146 arg,
1147 THREAD);
1148 }
1149 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1150 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION;
1151 }
1153 }
1156 const char* java_lang_Throwable::no_stack_trace_message() {
1157 return "\t<<no stack trace available>>";
1158 }
1161 // Currently used only for exceptions occurring during startup
1162 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1163 Thread *THREAD = Thread::current();
1164 Handle h_throwable(THREAD, throwable);
1165 while (h_throwable.not_null()) {
1166 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1167 if (result.is_null()) {
1168 st->print_cr(no_stack_trace_message());
1169 return;
1170 }
1172 while (result.not_null()) {
1173 objArrayHandle methods (THREAD,
1174 objArrayOop(result->obj_at(trace_methods_offset)));
1175 typeArrayHandle bcis (THREAD,
1176 typeArrayOop(result->obj_at(trace_bcis_offset)));
1178 if (methods.is_null() || bcis.is_null()) {
1179 st->print_cr(no_stack_trace_message());
1180 return;
1181 }
1183 int length = methods()->length();
1184 for (int index = 0; index < length; index++) {
1185 methodOop method = methodOop(methods()->obj_at(index));
1186 if (method == NULL) goto handle_cause;
1187 int bci = bcis->ushort_at(index);
1188 print_stack_element(st, method, bci);
1189 }
1190 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1191 }
1192 handle_cause:
1193 {
1194 EXCEPTION_MARK;
1195 JavaValue result(T_OBJECT);
1196 JavaCalls::call_virtual(&result,
1197 h_throwable,
1198 KlassHandle(THREAD, h_throwable->klass()),
1199 vmSymbols::getCause_name(),
1200 vmSymbols::void_throwable_signature(),
1201 THREAD);
1202 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1203 if (HAS_PENDING_EXCEPTION) {
1204 CLEAR_PENDING_EXCEPTION;
1205 h_throwable = Handle();
1206 } else {
1207 h_throwable = Handle(THREAD, (oop) result.get_jobject());
1208 if (h_throwable.not_null()) {
1209 st->print("Caused by: ");
1210 print(h_throwable, st);
1211 st->cr();
1212 }
1213 }
1214 }
1215 }
1216 }
1219 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) {
1220 // Note: this is no longer used in Merlin, but we support it for compatibility.
1221 Thread *thread = Thread::current();
1222 Handle stream(thread, print_stream);
1223 objArrayHandle result (thread, objArrayOop(backtrace(throwable)));
1224 if (result.is_null()) {
1225 print_to_stream(stream, no_stack_trace_message());
1226 return;
1227 }
1229 while (result.not_null()) {
1230 objArrayHandle methods (thread,
1231 objArrayOop(result->obj_at(trace_methods_offset)));
1232 typeArrayHandle bcis (thread,
1233 typeArrayOop(result->obj_at(trace_bcis_offset)));
1235 if (methods.is_null() || bcis.is_null()) {
1236 print_to_stream(stream, no_stack_trace_message());
1237 return;
1238 }
1240 int length = methods()->length();
1241 for (int index = 0; index < length; index++) {
1242 methodOop method = methodOop(methods()->obj_at(index));
1243 if (method == NULL) return;
1244 int bci = bcis->ushort_at(index);
1245 print_stack_element(stream, method, bci);
1246 }
1247 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset)));
1248 }
1249 }
1251 // This class provides a simple wrapper over the internal structure of
1252 // exception backtrace to insulate users of the backtrace from needing
1253 // to know what it looks like.
1254 class BacktraceBuilder: public StackObj {
1255 private:
1256 Handle _backtrace;
1257 objArrayOop _head;
1258 objArrayOop _methods;
1259 typeArrayOop _bcis;
1260 int _index;
1261 bool _dirty;
1262 No_Safepoint_Verifier _nsv;
1264 public:
1266 enum {
1267 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1268 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1269 trace_next_offset = java_lang_Throwable::trace_next_offset,
1270 trace_size = java_lang_Throwable::trace_size,
1271 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1272 };
1274 // constructor for new backtrace
1275 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _dirty(false) {
1276 expand(CHECK);
1277 _backtrace = _head;
1278 _index = 0;
1279 }
1281 void flush() {
1282 // The following appears to have been an optimization to save from
1283 // doing a barrier for each individual store into the _methods array,
1284 // but rather to do it for the entire array after the series of writes.
1285 // That optimization seems to have been lost when compressed oops was
1286 // implemented. However, the extra card-marks below was left in place,
1287 // but is now redundant because the individual stores into the
1288 // _methods array already execute the barrier code. CR 6918185 has
1289 // been filed so the original code may be restored by deferring the
1290 // barriers until after the entire sequence of stores, thus re-enabling
1291 // the intent of the original optimization. In the meantime the redundant
1292 // card mark below is now disabled.
1293 if (_dirty && _methods != NULL) {
1294 #if 0
1295 BarrierSet* bs = Universe::heap()->barrier_set();
1296 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt");
1297 bs->write_ref_array((HeapWord*)_methods->base(), _methods->length());
1298 #endif
1299 _dirty = false;
1300 }
1301 }
1303 void expand(TRAPS) {
1304 flush();
1306 objArrayHandle old_head(THREAD, _head);
1307 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1309 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1310 objArrayHandle new_head(THREAD, head);
1312 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1313 objArrayHandle new_methods(THREAD, methods);
1315 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1316 typeArrayHandle new_bcis(THREAD, bcis);
1318 if (!old_head.is_null()) {
1319 old_head->obj_at_put(trace_next_offset, new_head());
1320 }
1321 new_head->obj_at_put(trace_methods_offset, new_methods());
1322 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1324 _head = new_head();
1325 _methods = new_methods();
1326 _bcis = new_bcis();
1327 _index = 0;
1328 }
1330 oop backtrace() {
1331 flush();
1332 return _backtrace();
1333 }
1335 inline void push(methodOop method, short bci, TRAPS) {
1336 if (_index >= trace_chunk_size) {
1337 methodHandle mhandle(THREAD, method);
1338 expand(CHECK);
1339 method = mhandle();
1340 }
1342 _methods->obj_at_put(_index, method);
1343 _bcis->ushort_at_put(_index, bci);
1344 _index++;
1345 _dirty = true;
1346 }
1348 methodOop current_method() {
1349 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1350 return methodOop(_methods->obj_at(_index));
1351 }
1353 jushort current_bci() {
1354 assert(_index >= 0 && _index < trace_chunk_size, "out of range");
1355 return _bcis->ushort_at(_index);
1356 }
1357 };
1360 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, TRAPS) {
1361 if (!StackTraceInThrowable) return;
1362 ResourceMark rm(THREAD);
1364 // Start out by clearing the backtrace for this object, in case the VM
1365 // runs out of memory while allocating the stack trace
1366 set_backtrace(throwable(), NULL);
1367 if (JDK_Version::is_gte_jdk14x_version()) {
1368 // New since 1.4, clear lazily constructed Java level stacktrace if
1369 // refilling occurs
1370 clear_stacktrace(throwable());
1371 }
1373 int max_depth = MaxJavaStackTraceDepth;
1374 JavaThread* thread = (JavaThread*)THREAD;
1375 BacktraceBuilder bt(CHECK);
1377 // Instead of using vframe directly, this version of fill_in_stack_trace
1378 // basically handles everything by hand. This significantly improved the
1379 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1380 // See bug 6333838 for more details.
1381 // The "ASSERT" here is to verify this method generates the exactly same stack
1382 // trace as utilizing vframe.
1383 #ifdef ASSERT
1384 vframeStream st(thread);
1385 methodHandle st_method(THREAD, st.method());
1386 #endif
1387 int total_count = 0;
1388 RegisterMap map(thread, false);
1389 int decode_offset = 0;
1390 nmethod* nm = NULL;
1391 bool skip_fillInStackTrace_check = false;
1392 bool skip_throwableInit_check = false;
1394 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1395 methodOop method = NULL;
1396 int bci = 0;
1398 // Compiled java method case.
1399 if (decode_offset != 0) {
1400 DebugInfoReadStream stream(nm, decode_offset);
1401 decode_offset = stream.read_int();
1402 method = (methodOop)nm->oop_at(stream.read_int());
1403 bci = stream.read_bci();
1404 } else {
1405 if (fr.is_first_frame()) break;
1406 address pc = fr.pc();
1407 if (fr.is_interpreted_frame()) {
1408 intptr_t bcx = fr.interpreter_frame_bcx();
1409 method = fr.interpreter_frame_method();
1410 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1411 fr = fr.sender(&map);
1412 } else {
1413 CodeBlob* cb = fr.cb();
1414 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1415 // but non nmethod
1416 fr = fr.sender(&map);
1417 if (cb == NULL || !cb->is_nmethod()) {
1418 continue;
1419 }
1420 nm = (nmethod*)cb;
1421 if (nm->method()->is_native()) {
1422 method = nm->method();
1423 bci = 0;
1424 } else {
1425 PcDesc* pd = nm->pc_desc_at(pc);
1426 decode_offset = pd->scope_decode_offset();
1427 // if decode_offset is not equal to 0, it will execute the
1428 // "compiled java method case" at the beginning of the loop.
1429 continue;
1430 }
1431 }
1432 }
1433 #ifdef ASSERT
1434 assert(st_method() == method && st.bci() == bci,
1435 "Wrong stack trace");
1436 st.next();
1437 // vframeStream::method isn't GC-safe so store off a copy
1438 // of the methodOop in case we GC.
1439 if (!st.at_end()) {
1440 st_method = st.method();
1441 }
1442 #endif
1443 if (!skip_fillInStackTrace_check) {
1444 // check "fillInStackTrace" only once, so we negate the flag
1445 // after the first time check.
1446 skip_fillInStackTrace_check = true;
1447 if (method->name() == vmSymbols::fillInStackTrace_name()) {
1448 continue;
1449 }
1450 }
1451 // skip <init> methods of the exceptions klass. If there is <init> methods
1452 // that belongs to a superclass of the exception we are going to skipping
1453 // them in stack trace. This is simlar to classic VM.
1454 if (!skip_throwableInit_check) {
1455 if (method->name() == vmSymbols::object_initializer_name() &&
1456 throwable->is_a(method->method_holder())) {
1457 continue;
1458 } else {
1459 // if no "Throwable.init()" method found, we stop checking it next time.
1460 skip_throwableInit_check = true;
1461 }
1462 }
1463 bt.push(method, bci, CHECK);
1464 total_count++;
1465 }
1467 // Put completed stack trace into throwable object
1468 set_backtrace(throwable(), bt.backtrace());
1469 }
1471 void java_lang_Throwable::fill_in_stack_trace(Handle throwable) {
1472 // No-op if stack trace is disabled
1473 if (!StackTraceInThrowable) {
1474 return;
1475 }
1477 // Disable stack traces for some preallocated out of memory errors
1478 if (!Universe::should_fill_in_stack_trace(throwable)) {
1479 return;
1480 }
1482 PRESERVE_EXCEPTION_MARK;
1484 JavaThread* thread = JavaThread::active();
1485 fill_in_stack_trace(throwable, thread);
1486 // ignore exceptions thrown during stack trace filling
1487 CLEAR_PENDING_EXCEPTION;
1488 }
1490 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1491 // Allocate stack trace - backtrace is created but not filled in
1493 // No-op if stack trace is disabled
1494 if (!StackTraceInThrowable) return;
1496 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK);
1497 objArrayHandle backtrace (THREAD, h_oop);
1498 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1499 objArrayHandle methods (THREAD, m_oop);
1500 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1501 typeArrayHandle bcis(THREAD, b);
1503 // backtrace has space for one chunk (next is NULL)
1504 backtrace->obj_at_put(trace_methods_offset, methods());
1505 backtrace->obj_at_put(trace_bcis_offset, bcis());
1506 set_backtrace(throwable(), backtrace());
1507 }
1510 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1511 // Fill in stack trace into preallocated backtrace (no GC)
1513 // No-op if stack trace is disabled
1514 if (!StackTraceInThrowable) return;
1516 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1518 oop backtrace = java_lang_Throwable::backtrace(throwable());
1519 assert(backtrace != NULL, "backtrace not preallocated");
1521 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset);
1522 objArrayOop methods = objArrayOop(m);
1523 assert(methods != NULL && methods->length() > 0, "method array not preallocated");
1525 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset);
1526 typeArrayOop bcis = typeArrayOop(b);
1527 assert(bcis != NULL, "bci array not preallocated");
1529 assert(methods->length() == bcis->length(), "method and bci arrays should match");
1531 JavaThread* thread = JavaThread::current();
1532 ResourceMark rm(thread);
1533 vframeStream st(thread);
1535 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1536 // methods as preallocated errors aren't created by "java" code.
1538 // fill in as much stack trace as possible
1539 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1540 int chunk_count = 0;
1542 for (;!st.at_end(); st.next()) {
1543 // add element
1544 bcis->ushort_at_put(chunk_count, st.bci());
1545 methods->obj_at_put(chunk_count, st.method());
1547 chunk_count++;
1549 // Bail-out for deep stacks
1550 if (chunk_count >= max_chunks) break;
1551 }
1552 }
1555 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1556 if (throwable == NULL) {
1557 THROW_0(vmSymbols::java_lang_NullPointerException());
1558 }
1559 objArrayOop chunk = objArrayOop(backtrace(throwable));
1560 int depth = 0;
1561 if (chunk != NULL) {
1562 // Iterate over chunks and count full ones
1563 while (true) {
1564 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1565 if (next == NULL) break;
1566 depth += trace_chunk_size;
1567 chunk = next;
1568 }
1569 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1570 // Count element in remaining partial chunk
1571 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1572 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1573 assert(methods != NULL && bcis != NULL, "sanity check");
1574 for (int i = 0; i < methods->length(); i++) {
1575 if (methods->obj_at(i) == NULL) break;
1576 depth++;
1577 }
1578 }
1579 return depth;
1580 }
1583 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1584 if (throwable == NULL) {
1585 THROW_0(vmSymbols::java_lang_NullPointerException());
1586 }
1587 if (index < 0) {
1588 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1589 }
1590 // Compute how many chunks to skip and index into actual chunk
1591 objArrayOop chunk = objArrayOop(backtrace(throwable));
1592 int skip_chunks = index / trace_chunk_size;
1593 int chunk_index = index % trace_chunk_size;
1594 while (chunk != NULL && skip_chunks > 0) {
1595 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1596 skip_chunks--;
1597 }
1598 if (chunk == NULL) {
1599 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1600 }
1601 // Get method,bci from chunk
1602 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset));
1603 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1604 assert(methods != NULL && bcis != NULL, "sanity check");
1605 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index)));
1606 int bci = bcis->ushort_at(chunk_index);
1607 // Chunk can be partial full
1608 if (method.is_null()) {
1609 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1610 }
1612 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0);
1613 return element;
1614 }
1616 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1617 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs
1618 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4");
1620 // Allocate java.lang.StackTraceElement instance
1621 klassOop k = SystemDictionary::StackTraceElement_klass();
1622 assert(k != NULL, "must be loaded in 1.4+");
1623 instanceKlassHandle ik (THREAD, k);
1624 if (ik->should_be_initialized()) {
1625 ik->initialize(CHECK_0);
1626 }
1628 Handle element = ik->allocate_instance_handle(CHECK_0);
1629 // Fill in class name
1630 ResourceMark rm(THREAD);
1631 const char* str = instanceKlass::cast(method->method_holder())->external_name();
1632 oop classname = StringTable::intern((char*) str, CHECK_0);
1633 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1634 // Fill in method name
1635 oop methodname = StringTable::intern(method->name(), CHECK_0);
1636 java_lang_StackTraceElement::set_methodName(element(), methodname);
1637 // Fill in source file name
1638 Symbol* source = instanceKlass::cast(method->method_holder())->source_file_name();
1639 oop filename = StringTable::intern(source, CHECK_0);
1640 java_lang_StackTraceElement::set_fileName(element(), filename);
1641 // File in source line number
1642 int line_number;
1643 if (method->is_native()) {
1644 // Negative value different from -1 below, enabling Java code in
1645 // class java.lang.StackTraceElement to distinguish "native" from
1646 // "no LineNumberTable".
1647 line_number = -2;
1648 } else {
1649 // Returns -1 if no LineNumberTable, and otherwise actual line number
1650 line_number = method->line_number_from_bci(bci);
1651 }
1652 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1654 return element();
1655 }
1658 void java_lang_reflect_AccessibleObject::compute_offsets() {
1659 klassOop k = SystemDictionary::reflect_AccessibleObject_klass();
1660 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1661 }
1663 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1664 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1665 return (jboolean) reflect->bool_field(override_offset);
1666 }
1668 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1669 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1670 reflect->bool_field_put(override_offset, (int) value);
1671 }
1673 void java_lang_reflect_Method::compute_offsets() {
1674 klassOop k = SystemDictionary::reflect_Method_klass();
1675 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1676 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1677 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1678 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1679 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1680 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1681 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1682 // The generic signature and annotations fields are only present in 1.5
1683 signature_offset = -1;
1684 annotations_offset = -1;
1685 parameter_annotations_offset = -1;
1686 annotation_default_offset = -1;
1687 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1688 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1689 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1690 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1691 }
1693 Handle java_lang_reflect_Method::create(TRAPS) {
1694 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1695 klassOop klass = SystemDictionary::reflect_Method_klass();
1696 // This class is eagerly initialized during VM initialization, since we keep a refence
1697 // to one of the methods
1698 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized");
1699 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1700 }
1702 oop java_lang_reflect_Method::clazz(oop reflect) {
1703 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1704 return reflect->obj_field(clazz_offset);
1705 }
1707 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1708 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1709 reflect->obj_field_put(clazz_offset, value);
1710 }
1712 int java_lang_reflect_Method::slot(oop reflect) {
1713 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1714 return reflect->int_field(slot_offset);
1715 }
1717 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1718 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1719 reflect->int_field_put(slot_offset, value);
1720 }
1722 oop java_lang_reflect_Method::name(oop method) {
1723 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1724 return method->obj_field(name_offset);
1725 }
1727 void java_lang_reflect_Method::set_name(oop method, oop value) {
1728 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1729 method->obj_field_put(name_offset, value);
1730 }
1732 oop java_lang_reflect_Method::return_type(oop method) {
1733 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1734 return method->obj_field(returnType_offset);
1735 }
1737 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1738 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1739 method->obj_field_put(returnType_offset, value);
1740 }
1742 oop java_lang_reflect_Method::parameter_types(oop method) {
1743 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1744 return method->obj_field(parameterTypes_offset);
1745 }
1747 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
1748 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1749 method->obj_field_put(parameterTypes_offset, value);
1750 }
1752 oop java_lang_reflect_Method::exception_types(oop method) {
1753 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1754 return method->obj_field(exceptionTypes_offset);
1755 }
1757 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
1758 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1759 method->obj_field_put(exceptionTypes_offset, value);
1760 }
1762 int java_lang_reflect_Method::modifiers(oop method) {
1763 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1764 return method->int_field(modifiers_offset);
1765 }
1767 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
1768 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1769 method->int_field_put(modifiers_offset, value);
1770 }
1772 bool java_lang_reflect_Method::has_signature_field() {
1773 return (signature_offset >= 0);
1774 }
1776 oop java_lang_reflect_Method::signature(oop method) {
1777 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1778 assert(has_signature_field(), "signature field must be present");
1779 return method->obj_field(signature_offset);
1780 }
1782 void java_lang_reflect_Method::set_signature(oop method, oop value) {
1783 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1784 assert(has_signature_field(), "signature field must be present");
1785 method->obj_field_put(signature_offset, value);
1786 }
1788 bool java_lang_reflect_Method::has_annotations_field() {
1789 return (annotations_offset >= 0);
1790 }
1792 oop java_lang_reflect_Method::annotations(oop method) {
1793 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1794 assert(has_annotations_field(), "annotations field must be present");
1795 return method->obj_field(annotations_offset);
1796 }
1798 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
1799 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1800 assert(has_annotations_field(), "annotations field must be present");
1801 method->obj_field_put(annotations_offset, value);
1802 }
1804 bool java_lang_reflect_Method::has_parameter_annotations_field() {
1805 return (parameter_annotations_offset >= 0);
1806 }
1808 oop java_lang_reflect_Method::parameter_annotations(oop method) {
1809 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1810 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1811 return method->obj_field(parameter_annotations_offset);
1812 }
1814 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
1815 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1816 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1817 method->obj_field_put(parameter_annotations_offset, value);
1818 }
1820 bool java_lang_reflect_Method::has_annotation_default_field() {
1821 return (annotation_default_offset >= 0);
1822 }
1824 oop java_lang_reflect_Method::annotation_default(oop method) {
1825 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1826 assert(has_annotation_default_field(), "annotation default field must be present");
1827 return method->obj_field(annotation_default_offset);
1828 }
1830 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
1831 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1832 assert(has_annotation_default_field(), "annotation default field must be present");
1833 method->obj_field_put(annotation_default_offset, value);
1834 }
1836 void java_lang_reflect_Constructor::compute_offsets() {
1837 klassOop k = SystemDictionary::reflect_Constructor_klass();
1838 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1839 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1840 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1841 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1842 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1843 // The generic signature and annotations fields are only present in 1.5
1844 signature_offset = -1;
1845 annotations_offset = -1;
1846 parameter_annotations_offset = -1;
1847 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1848 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1849 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1850 }
1852 Handle java_lang_reflect_Constructor::create(TRAPS) {
1853 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1854 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
1855 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1856 instanceKlassHandle klass (THREAD, k);
1857 // Ensure it is initialized
1858 klass->initialize(CHECK_NH);
1859 return klass->allocate_instance_handle(CHECK_NH);
1860 }
1862 oop java_lang_reflect_Constructor::clazz(oop reflect) {
1863 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1864 return reflect->obj_field(clazz_offset);
1865 }
1867 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
1868 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1869 reflect->obj_field_put(clazz_offset, value);
1870 }
1872 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
1873 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1874 return constructor->obj_field(parameterTypes_offset);
1875 }
1877 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
1878 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1879 constructor->obj_field_put(parameterTypes_offset, value);
1880 }
1882 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
1883 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1884 return constructor->obj_field(exceptionTypes_offset);
1885 }
1887 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
1888 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1889 constructor->obj_field_put(exceptionTypes_offset, value);
1890 }
1892 int java_lang_reflect_Constructor::slot(oop reflect) {
1893 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1894 return reflect->int_field(slot_offset);
1895 }
1897 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
1898 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1899 reflect->int_field_put(slot_offset, value);
1900 }
1902 int java_lang_reflect_Constructor::modifiers(oop constructor) {
1903 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1904 return constructor->int_field(modifiers_offset);
1905 }
1907 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
1908 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1909 constructor->int_field_put(modifiers_offset, value);
1910 }
1912 bool java_lang_reflect_Constructor::has_signature_field() {
1913 return (signature_offset >= 0);
1914 }
1916 oop java_lang_reflect_Constructor::signature(oop constructor) {
1917 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1918 assert(has_signature_field(), "signature field must be present");
1919 return constructor->obj_field(signature_offset);
1920 }
1922 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
1923 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1924 assert(has_signature_field(), "signature field must be present");
1925 constructor->obj_field_put(signature_offset, value);
1926 }
1928 bool java_lang_reflect_Constructor::has_annotations_field() {
1929 return (annotations_offset >= 0);
1930 }
1932 oop java_lang_reflect_Constructor::annotations(oop constructor) {
1933 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1934 assert(has_annotations_field(), "annotations field must be present");
1935 return constructor->obj_field(annotations_offset);
1936 }
1938 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
1939 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1940 assert(has_annotations_field(), "annotations field must be present");
1941 constructor->obj_field_put(annotations_offset, value);
1942 }
1944 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
1945 return (parameter_annotations_offset >= 0);
1946 }
1948 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
1949 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1950 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1951 return method->obj_field(parameter_annotations_offset);
1952 }
1954 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
1955 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1956 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
1957 method->obj_field_put(parameter_annotations_offset, value);
1958 }
1960 void java_lang_reflect_Field::compute_offsets() {
1961 klassOop k = SystemDictionary::reflect_Field_klass();
1962 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1963 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1964 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
1965 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1966 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1967 // The generic signature and annotations fields are only present in 1.5
1968 signature_offset = -1;
1969 annotations_offset = -1;
1970 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1971 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1972 }
1974 Handle java_lang_reflect_Field::create(TRAPS) {
1975 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1976 Symbol* name = vmSymbols::java_lang_reflect_Field();
1977 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
1978 instanceKlassHandle klass (THREAD, k);
1979 // Ensure it is initialized
1980 klass->initialize(CHECK_NH);
1981 return klass->allocate_instance_handle(CHECK_NH);
1982 }
1984 oop java_lang_reflect_Field::clazz(oop reflect) {
1985 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1986 return reflect->obj_field(clazz_offset);
1987 }
1989 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
1990 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1991 reflect->obj_field_put(clazz_offset, value);
1992 }
1994 oop java_lang_reflect_Field::name(oop field) {
1995 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1996 return field->obj_field(name_offset);
1997 }
1999 void java_lang_reflect_Field::set_name(oop field, oop value) {
2000 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2001 field->obj_field_put(name_offset, value);
2002 }
2004 oop java_lang_reflect_Field::type(oop field) {
2005 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2006 return field->obj_field(type_offset);
2007 }
2009 void java_lang_reflect_Field::set_type(oop field, oop value) {
2010 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2011 field->obj_field_put(type_offset, value);
2012 }
2014 int java_lang_reflect_Field::slot(oop reflect) {
2015 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2016 return reflect->int_field(slot_offset);
2017 }
2019 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2020 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2021 reflect->int_field_put(slot_offset, value);
2022 }
2024 int java_lang_reflect_Field::modifiers(oop field) {
2025 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2026 return field->int_field(modifiers_offset);
2027 }
2029 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2030 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2031 field->int_field_put(modifiers_offset, value);
2032 }
2034 bool java_lang_reflect_Field::has_signature_field() {
2035 return (signature_offset >= 0);
2036 }
2038 oop java_lang_reflect_Field::signature(oop field) {
2039 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2040 assert(has_signature_field(), "signature field must be present");
2041 return field->obj_field(signature_offset);
2042 }
2044 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2045 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2046 assert(has_signature_field(), "signature field must be present");
2047 field->obj_field_put(signature_offset, value);
2048 }
2050 bool java_lang_reflect_Field::has_annotations_field() {
2051 return (annotations_offset >= 0);
2052 }
2054 oop java_lang_reflect_Field::annotations(oop field) {
2055 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2056 assert(has_annotations_field(), "annotations field must be present");
2057 return field->obj_field(annotations_offset);
2058 }
2060 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2061 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2062 assert(has_annotations_field(), "annotations field must be present");
2063 field->obj_field_put(annotations_offset, value);
2064 }
2067 void sun_reflect_ConstantPool::compute_offsets() {
2068 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2069 // This null test can be removed post beta
2070 if (k != NULL) {
2071 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature());
2072 }
2073 }
2076 Handle sun_reflect_ConstantPool::create(TRAPS) {
2077 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2078 klassOop k = SystemDictionary::reflect_ConstantPool_klass();
2079 instanceKlassHandle klass (THREAD, k);
2080 // Ensure it is initialized
2081 klass->initialize(CHECK_NH);
2082 return klass->allocate_instance_handle(CHECK_NH);
2083 }
2086 oop sun_reflect_ConstantPool::cp_oop(oop reflect) {
2087 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2088 return reflect->obj_field(_cp_oop_offset);
2089 }
2092 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) {
2093 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2094 reflect->obj_field_put(_cp_oop_offset, value);
2095 }
2097 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2098 klassOop k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2099 // This null test can be removed post beta
2100 if (k != NULL) {
2101 compute_offset(_base_offset, k,
2102 vmSymbols::base_name(), vmSymbols::object_signature());
2103 }
2104 }
2106 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2107 klassOop k = SystemDictionary::box_klass(type);
2108 if (k == NULL) return NULL;
2109 instanceKlassHandle h (THREAD, k);
2110 if (!h->is_initialized()) h->initialize(CHECK_0);
2111 return h->allocate_instance(THREAD);
2112 }
2115 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2116 oop box = initialize_and_allocate(type, CHECK_0);
2117 if (box == NULL) return NULL;
2118 switch (type) {
2119 case T_BOOLEAN:
2120 box->bool_field_put(value_offset, value->z);
2121 break;
2122 case T_CHAR:
2123 box->char_field_put(value_offset, value->c);
2124 break;
2125 case T_FLOAT:
2126 box->float_field_put(value_offset, value->f);
2127 break;
2128 case T_DOUBLE:
2129 box->double_field_put(long_value_offset, value->d);
2130 break;
2131 case T_BYTE:
2132 box->byte_field_put(value_offset, value->b);
2133 break;
2134 case T_SHORT:
2135 box->short_field_put(value_offset, value->s);
2136 break;
2137 case T_INT:
2138 box->int_field_put(value_offset, value->i);
2139 break;
2140 case T_LONG:
2141 box->long_field_put(long_value_offset, value->j);
2142 break;
2143 default:
2144 return NULL;
2145 }
2146 return box;
2147 }
2150 BasicType java_lang_boxing_object::basic_type(oop box) {
2151 if (box == NULL) return T_ILLEGAL;
2152 BasicType type = SystemDictionary::box_klass_type(box->klass());
2153 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2154 return T_ILLEGAL;
2155 return type;
2156 }
2159 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2160 BasicType type = SystemDictionary::box_klass_type(box->klass());
2161 switch (type) {
2162 case T_BOOLEAN:
2163 value->z = box->bool_field(value_offset);
2164 break;
2165 case T_CHAR:
2166 value->c = box->char_field(value_offset);
2167 break;
2168 case T_FLOAT:
2169 value->f = box->float_field(value_offset);
2170 break;
2171 case T_DOUBLE:
2172 value->d = box->double_field(long_value_offset);
2173 break;
2174 case T_BYTE:
2175 value->b = box->byte_field(value_offset);
2176 break;
2177 case T_SHORT:
2178 value->s = box->short_field(value_offset);
2179 break;
2180 case T_INT:
2181 value->i = box->int_field(value_offset);
2182 break;
2183 case T_LONG:
2184 value->j = box->long_field(long_value_offset);
2185 break;
2186 default:
2187 return T_ILLEGAL;
2188 } // end switch
2189 return type;
2190 }
2193 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2194 BasicType type = SystemDictionary::box_klass_type(box->klass());
2195 switch (type) {
2196 case T_BOOLEAN:
2197 box->bool_field_put(value_offset, value->z);
2198 break;
2199 case T_CHAR:
2200 box->char_field_put(value_offset, value->c);
2201 break;
2202 case T_FLOAT:
2203 box->float_field_put(value_offset, value->f);
2204 break;
2205 case T_DOUBLE:
2206 box->double_field_put(long_value_offset, value->d);
2207 break;
2208 case T_BYTE:
2209 box->byte_field_put(value_offset, value->b);
2210 break;
2211 case T_SHORT:
2212 box->short_field_put(value_offset, value->s);
2213 break;
2214 case T_INT:
2215 box->int_field_put(value_offset, value->i);
2216 break;
2217 case T_LONG:
2218 box->long_field_put(long_value_offset, value->j);
2219 break;
2220 default:
2221 return T_ILLEGAL;
2222 } // end switch
2223 return type;
2224 }
2227 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2228 switch (type) {
2229 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2230 case T_CHAR: st->print("%d", value->c); break;
2231 case T_BYTE: st->print("%d", value->b); break;
2232 case T_SHORT: st->print("%d", value->s); break;
2233 case T_INT: st->print("%d", value->i); break;
2234 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2235 case T_FLOAT: st->print("%f", value->f); break;
2236 case T_DOUBLE: st->print("%lf", value->d); break;
2237 default: st->print("type %d?", type); break;
2238 }
2239 }
2242 // Support for java_lang_ref_Reference
2243 oop java_lang_ref_Reference::pending_list_lock() {
2244 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2245 address addr = ik->static_field_addr(static_lock_offset);
2246 if (UseCompressedOops) {
2247 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2248 } else {
2249 return oopDesc::load_decode_heap_oop((oop*)addr);
2250 }
2251 }
2253 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2254 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass());
2255 address addr = ik->static_field_addr(static_pending_offset);
2256 // XXX This might not be HeapWord aligned, almost rather be char *.
2257 return (HeapWord*)addr;
2258 }
2260 oop java_lang_ref_Reference::pending_list() {
2261 char *addr = (char *)pending_list_addr();
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 }
2270 // Support for java_lang_ref_SoftReference
2272 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2273 return ref->long_field(timestamp_offset);
2274 }
2276 jlong java_lang_ref_SoftReference::clock() {
2277 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2278 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2279 return *offset;
2280 }
2282 void java_lang_ref_SoftReference::set_clock(jlong value) {
2283 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass());
2284 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2285 *offset = value;
2286 }
2289 // Support for java_lang_invoke_MethodHandle
2291 int java_lang_invoke_MethodHandle::_type_offset;
2292 int java_lang_invoke_MethodHandle::_vmtarget_offset;
2293 int java_lang_invoke_MethodHandle::_vmentry_offset;
2294 int java_lang_invoke_MethodHandle::_vmslots_offset;
2296 int java_lang_invoke_MemberName::_clazz_offset;
2297 int java_lang_invoke_MemberName::_name_offset;
2298 int java_lang_invoke_MemberName::_type_offset;
2299 int java_lang_invoke_MemberName::_flags_offset;
2300 int java_lang_invoke_MemberName::_vmtarget_offset;
2301 int java_lang_invoke_MemberName::_vmindex_offset;
2303 int java_lang_invoke_DirectMethodHandle::_vmindex_offset;
2305 int java_lang_invoke_BoundMethodHandle::_argument_offset;
2306 int java_lang_invoke_BoundMethodHandle::_vmargslot_offset;
2308 int java_lang_invoke_AdapterMethodHandle::_conversion_offset;
2310 void java_lang_invoke_MethodHandle::compute_offsets() {
2311 klassOop k = SystemDictionary::MethodHandle_klass();
2312 if (k != NULL && EnableInvokeDynamic) {
2313 bool allow_super = false;
2314 compute_offset(_type_offset, k, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature(), allow_super);
2315 compute_offset(_vmtarget_offset, k, vmSymbols::vmtarget_name(), vmSymbols::object_signature(), allow_super);
2316 compute_offset(_vmentry_offset, k, vmSymbols::vmentry_name(), vmSymbols::machine_word_signature(), allow_super);
2318 // Note: MH.vmslots (if it is present) is a hoisted copy of MH.type.form.vmslots.
2319 // It is optional pending experiments to keep or toss.
2320 compute_optional_offset(_vmslots_offset, k, vmSymbols::vmslots_name(), vmSymbols::int_signature(), allow_super);
2321 }
2322 }
2324 void java_lang_invoke_MemberName::compute_offsets() {
2325 klassOop k = SystemDictionary::MemberName_klass();
2326 if (k != NULL && EnableInvokeDynamic) {
2327 compute_offset(_clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2328 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2329 compute_offset(_type_offset, k, vmSymbols::type_name(), vmSymbols::object_signature());
2330 compute_offset(_flags_offset, k, vmSymbols::flags_name(), vmSymbols::int_signature());
2331 compute_offset(_vmtarget_offset, k, vmSymbols::vmtarget_name(), vmSymbols::object_signature());
2332 compute_offset(_vmindex_offset, k, vmSymbols::vmindex_name(), vmSymbols::int_signature());
2333 }
2334 }
2336 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2337 klassOop k = SystemDictionary::DirectMethodHandle_klass();
2338 if (k != NULL && EnableInvokeDynamic) {
2339 compute_offset(_vmindex_offset, k, vmSymbols::vmindex_name(), vmSymbols::int_signature(), true);
2340 }
2341 }
2343 void java_lang_invoke_BoundMethodHandle::compute_offsets() {
2344 klassOop k = SystemDictionary::BoundMethodHandle_klass();
2345 if (k != NULL && EnableInvokeDynamic) {
2346 compute_offset(_vmargslot_offset, k, vmSymbols::vmargslot_name(), vmSymbols::int_signature(), true);
2347 compute_offset(_argument_offset, k, vmSymbols::argument_name(), vmSymbols::object_signature(), true);
2348 }
2349 }
2351 void java_lang_invoke_AdapterMethodHandle::compute_offsets() {
2352 klassOop k = SystemDictionary::AdapterMethodHandle_klass();
2353 if (k != NULL && EnableInvokeDynamic) {
2354 compute_offset(_conversion_offset, k, vmSymbols::conversion_name(), vmSymbols::int_signature(), true);
2355 }
2356 }
2358 oop java_lang_invoke_MethodHandle::type(oop mh) {
2359 return mh->obj_field(_type_offset);
2360 }
2362 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2363 mh->obj_field_put(_type_offset, mtype);
2364 }
2366 int java_lang_invoke_MethodHandle::vmslots(oop mh) {
2367 int vmslots_offset = _vmslots_offset;
2368 if (vmslots_offset != 0) {
2369 #ifdef ASSERT
2370 int x = mh->int_field(vmslots_offset);
2371 int y = compute_vmslots(mh);
2372 assert(x == y, "correct hoisted value");
2373 #endif
2374 return mh->int_field(vmslots_offset);
2375 } else {
2376 return compute_vmslots(mh);
2377 }
2378 }
2380 // if MH.vmslots exists, hoist into it the value of type.form.vmslots
2381 void java_lang_invoke_MethodHandle::init_vmslots(oop mh) {
2382 int vmslots_offset = _vmslots_offset;
2383 if (vmslots_offset != 0) {
2384 mh->int_field_put(vmslots_offset, compute_vmslots(mh));
2385 }
2386 }
2388 // fetch type.form.vmslots, which is the number of JVM stack slots
2389 // required to carry the arguments of this MH
2390 int java_lang_invoke_MethodHandle::compute_vmslots(oop mh) {
2391 oop mtype = type(mh);
2392 if (mtype == NULL) return 0; // Java code would get NPE
2393 oop form = java_lang_invoke_MethodType::form(mtype);
2394 if (form == NULL) return 0; // Java code would get NPE
2395 return java_lang_invoke_MethodTypeForm::vmslots(form);
2396 }
2398 // fetch the low-level entry point for this mh
2399 MethodHandleEntry* java_lang_invoke_MethodHandle::vmentry(oop mh) {
2400 return (MethodHandleEntry*) mh->address_field(_vmentry_offset);
2401 }
2403 void java_lang_invoke_MethodHandle::set_vmentry(oop mh, MethodHandleEntry* me) {
2404 assert(_vmentry_offset != 0, "must be present");
2406 // This is always the final step that initializes a valid method handle:
2407 mh->release_address_field_put(_vmentry_offset, (address) me);
2409 // There should be enough memory barriers on exit from native methods
2410 // to ensure that the MH is fully initialized to all threads before
2411 // Java code can publish it in global data structures.
2412 // But just in case, we use release_address_field_put.
2413 }
2415 /// MemberName accessors
2417 oop java_lang_invoke_MemberName::clazz(oop mname) {
2418 assert(is_instance(mname), "wrong type");
2419 return mname->obj_field(_clazz_offset);
2420 }
2422 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2423 assert(is_instance(mname), "wrong type");
2424 mname->obj_field_put(_clazz_offset, clazz);
2425 }
2427 oop java_lang_invoke_MemberName::name(oop mname) {
2428 assert(is_instance(mname), "wrong type");
2429 return mname->obj_field(_name_offset);
2430 }
2432 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2433 assert(is_instance(mname), "wrong type");
2434 mname->obj_field_put(_name_offset, name);
2435 }
2437 oop java_lang_invoke_MemberName::type(oop mname) {
2438 assert(is_instance(mname), "wrong type");
2439 return mname->obj_field(_type_offset);
2440 }
2442 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2443 assert(is_instance(mname), "wrong type");
2444 mname->obj_field_put(_type_offset, type);
2445 }
2447 int java_lang_invoke_MemberName::flags(oop mname) {
2448 assert(is_instance(mname), "wrong type");
2449 return mname->int_field(_flags_offset);
2450 }
2452 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2453 assert(is_instance(mname), "wrong type");
2454 mname->int_field_put(_flags_offset, flags);
2455 }
2457 oop java_lang_invoke_MemberName::vmtarget(oop mname) {
2458 assert(is_instance(mname), "wrong type");
2459 return mname->obj_field(_vmtarget_offset);
2460 }
2462 void java_lang_invoke_MemberName::set_vmtarget(oop mname, oop ref) {
2463 assert(is_instance(mname), "wrong type");
2464 mname->obj_field_put(_vmtarget_offset, ref);
2465 }
2467 int java_lang_invoke_MemberName::vmindex(oop mname) {
2468 assert(is_instance(mname), "wrong type");
2469 return mname->int_field(_vmindex_offset);
2470 }
2472 void java_lang_invoke_MemberName::set_vmindex(oop mname, int index) {
2473 assert(is_instance(mname), "wrong type");
2474 mname->int_field_put(_vmindex_offset, index);
2475 }
2477 oop java_lang_invoke_MethodHandle::vmtarget(oop mh) {
2478 assert(is_instance(mh), "MH only");
2479 return mh->obj_field(_vmtarget_offset);
2480 }
2482 void java_lang_invoke_MethodHandle::set_vmtarget(oop mh, oop ref) {
2483 assert(is_instance(mh), "MH only");
2484 mh->obj_field_put(_vmtarget_offset, ref);
2485 }
2487 int java_lang_invoke_DirectMethodHandle::vmindex(oop mh) {
2488 assert(is_instance(mh), "DMH only");
2489 return mh->int_field(_vmindex_offset);
2490 }
2492 void java_lang_invoke_DirectMethodHandle::set_vmindex(oop mh, int index) {
2493 assert(is_instance(mh), "DMH only");
2494 mh->int_field_put(_vmindex_offset, index);
2495 }
2497 int java_lang_invoke_BoundMethodHandle::vmargslot(oop mh) {
2498 assert(is_instance(mh), "BMH only");
2499 return mh->int_field(_vmargslot_offset);
2500 }
2502 oop java_lang_invoke_BoundMethodHandle::argument(oop mh) {
2503 assert(is_instance(mh), "BMH only");
2504 return mh->obj_field(_argument_offset);
2505 }
2507 int java_lang_invoke_AdapterMethodHandle::conversion(oop mh) {
2508 assert(is_instance(mh), "AMH only");
2509 return mh->int_field(_conversion_offset);
2510 }
2512 void java_lang_invoke_AdapterMethodHandle::set_conversion(oop mh, int conv) {
2513 assert(is_instance(mh), "AMH only");
2514 mh->int_field_put(_conversion_offset, conv);
2515 }
2518 // Support for java_lang_invoke_MethodType
2520 int java_lang_invoke_MethodType::_rtype_offset;
2521 int java_lang_invoke_MethodType::_ptypes_offset;
2522 int java_lang_invoke_MethodType::_form_offset;
2524 void java_lang_invoke_MethodType::compute_offsets() {
2525 klassOop k = SystemDictionary::MethodType_klass();
2526 if (k != NULL) {
2527 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2528 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2529 compute_offset(_form_offset, k, vmSymbols::form_name(), vmSymbols::java_lang_invoke_MethodTypeForm_signature());
2530 }
2531 }
2533 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2534 st->print("(");
2535 objArrayOop pts = ptypes(mt);
2536 for (int i = 0, limit = pts->length(); i < limit; i++) {
2537 java_lang_Class::print_signature(pts->obj_at(i), st);
2538 }
2539 st->print(")");
2540 java_lang_Class::print_signature(rtype(mt), st);
2541 }
2543 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2544 ResourceMark rm;
2545 stringStream buffer(128);
2546 print_signature(mt, &buffer);
2547 const char* sigstr = buffer.base();
2548 int siglen = (int) buffer.size();
2549 Symbol *name;
2550 if (!intern_if_not_found) {
2551 name = SymbolTable::probe(sigstr, siglen);
2552 } else {
2553 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2554 }
2555 return name;
2556 }
2558 oop java_lang_invoke_MethodType::rtype(oop mt) {
2559 assert(is_instance(mt), "must be a MethodType");
2560 return mt->obj_field(_rtype_offset);
2561 }
2563 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2564 assert(is_instance(mt), "must be a MethodType");
2565 return (objArrayOop) mt->obj_field(_ptypes_offset);
2566 }
2568 oop java_lang_invoke_MethodType::form(oop mt) {
2569 assert(is_instance(mt), "must be a MethodType");
2570 return mt->obj_field(_form_offset);
2571 }
2573 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2574 return ptypes(mt)->obj_at(idx);
2575 }
2577 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2578 return ptypes(mt)->length();
2579 }
2583 // Support for java_lang_invoke_MethodTypeForm
2585 int java_lang_invoke_MethodTypeForm::_vmslots_offset;
2586 int java_lang_invoke_MethodTypeForm::_erasedType_offset;
2587 int java_lang_invoke_MethodTypeForm::_genericInvoker_offset;
2589 void java_lang_invoke_MethodTypeForm::compute_offsets() {
2590 klassOop k = SystemDictionary::MethodTypeForm_klass();
2591 if (k != NULL) {
2592 compute_optional_offset(_vmslots_offset, k, vmSymbols::vmslots_name(), vmSymbols::int_signature(), true);
2593 compute_optional_offset(_erasedType_offset, k, vmSymbols::erasedType_name(), vmSymbols::java_lang_invoke_MethodType_signature(), true);
2594 compute_optional_offset(_genericInvoker_offset, k, vmSymbols::genericInvoker_name(), vmSymbols::java_lang_invoke_MethodHandle_signature(), true);
2595 if (_genericInvoker_offset == 0) _genericInvoker_offset = -1; // set to explicit "empty" value
2596 }
2597 }
2599 int java_lang_invoke_MethodTypeForm::vmslots(oop mtform) {
2600 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2601 return mtform->int_field(_vmslots_offset);
2602 }
2604 oop java_lang_invoke_MethodTypeForm::erasedType(oop mtform) {
2605 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2606 return mtform->obj_field(_erasedType_offset);
2607 }
2609 oop java_lang_invoke_MethodTypeForm::genericInvoker(oop mtform) {
2610 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only");
2611 return mtform->obj_field(_genericInvoker_offset);
2612 }
2615 // Support for java_lang_invoke_CallSite
2617 int java_lang_invoke_CallSite::_target_offset;
2619 void java_lang_invoke_CallSite::compute_offsets() {
2620 if (!EnableInvokeDynamic) return;
2621 klassOop k = SystemDictionary::CallSite_klass();
2622 if (k != NULL) {
2623 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2624 }
2625 }
2627 oop java_lang_invoke_CallSite::target(oop site) {
2628 return site->obj_field(_target_offset);
2629 }
2631 void java_lang_invoke_CallSite::set_target(oop site, oop target) {
2632 site->obj_field_put(_target_offset, target);
2633 }
2636 // Support for java_security_AccessControlContext
2638 int java_security_AccessControlContext::_context_offset = 0;
2639 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2640 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2642 void java_security_AccessControlContext::compute_offsets() {
2643 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2644 fieldDescriptor fd;
2645 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2647 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2648 fatal("Invalid layout of java.security.AccessControlContext");
2649 }
2650 _context_offset = fd.offset();
2652 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2653 fatal("Invalid layout of java.security.AccessControlContext");
2654 }
2655 _privilegedContext_offset = fd.offset();
2657 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2658 fatal("Invalid layout of java.security.AccessControlContext");
2659 }
2660 _isPrivileged_offset = fd.offset();
2661 }
2664 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2665 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2666 // Ensure klass is initialized
2667 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2668 // Allocate result
2669 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2670 // Fill in values
2671 result->obj_field_put(_context_offset, context());
2672 result->obj_field_put(_privilegedContext_offset, privileged_context());
2673 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2674 return result;
2675 }
2678 // Support for java_lang_ClassLoader
2680 oop java_lang_ClassLoader::parent(oop loader) {
2681 assert(loader->is_oop(), "loader must be oop");
2682 return loader->obj_field(parent_offset);
2683 }
2686 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
2687 // Fix for 4474172; see evaluation for more details
2688 loader = non_reflection_class_loader(loader);
2690 oop cl = SystemDictionary::java_system_loader();
2691 while(cl != NULL) {
2692 if (cl == loader) return true;
2693 cl = parent(cl);
2694 }
2695 return false;
2696 }
2698 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
2699 if (loader != NULL) {
2700 // See whether this is one of the class loaders associated with
2701 // the generated bytecodes for reflection, and if so, "magically"
2702 // delegate to its parent to prevent class loading from occurring
2703 // in places where applications using reflection didn't expect it.
2704 klassOop delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
2705 // This might be null in non-1.4 JDKs
2706 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
2707 return parent(loader);
2708 }
2709 }
2710 return loader;
2711 }
2714 // Support for java_lang_System
2715 int java_lang_System::in_offset_in_bytes() {
2716 return (instanceMirrorKlass::offset_of_static_fields() + static_in_offset);
2717 }
2720 int java_lang_System::out_offset_in_bytes() {
2721 return (instanceMirrorKlass::offset_of_static_fields() + static_out_offset);
2722 }
2725 int java_lang_System::err_offset_in_bytes() {
2726 return (instanceMirrorKlass::offset_of_static_fields() + static_err_offset);
2727 }
2731 int java_lang_String::value_offset;
2732 int java_lang_String::offset_offset;
2733 int java_lang_String::count_offset;
2734 int java_lang_String::hash_offset;
2735 int java_lang_Class::klass_offset;
2736 int java_lang_Class::array_klass_offset;
2737 int java_lang_Class::resolved_constructor_offset;
2738 int java_lang_Class::number_of_fake_oop_fields;
2739 int java_lang_Class::oop_size_offset;
2740 int java_lang_Class::static_oop_field_count_offset;
2741 int java_lang_Throwable::backtrace_offset;
2742 int java_lang_Throwable::detailMessage_offset;
2743 int java_lang_Throwable::cause_offset;
2744 int java_lang_Throwable::stackTrace_offset;
2745 int java_lang_reflect_AccessibleObject::override_offset;
2746 int java_lang_reflect_Method::clazz_offset;
2747 int java_lang_reflect_Method::name_offset;
2748 int java_lang_reflect_Method::returnType_offset;
2749 int java_lang_reflect_Method::parameterTypes_offset;
2750 int java_lang_reflect_Method::exceptionTypes_offset;
2751 int java_lang_reflect_Method::slot_offset;
2752 int java_lang_reflect_Method::modifiers_offset;
2753 int java_lang_reflect_Method::signature_offset;
2754 int java_lang_reflect_Method::annotations_offset;
2755 int java_lang_reflect_Method::parameter_annotations_offset;
2756 int java_lang_reflect_Method::annotation_default_offset;
2757 int java_lang_reflect_Constructor::clazz_offset;
2758 int java_lang_reflect_Constructor::parameterTypes_offset;
2759 int java_lang_reflect_Constructor::exceptionTypes_offset;
2760 int java_lang_reflect_Constructor::slot_offset;
2761 int java_lang_reflect_Constructor::modifiers_offset;
2762 int java_lang_reflect_Constructor::signature_offset;
2763 int java_lang_reflect_Constructor::annotations_offset;
2764 int java_lang_reflect_Constructor::parameter_annotations_offset;
2765 int java_lang_reflect_Field::clazz_offset;
2766 int java_lang_reflect_Field::name_offset;
2767 int java_lang_reflect_Field::type_offset;
2768 int java_lang_reflect_Field::slot_offset;
2769 int java_lang_reflect_Field::modifiers_offset;
2770 int java_lang_reflect_Field::signature_offset;
2771 int java_lang_reflect_Field::annotations_offset;
2772 int java_lang_boxing_object::value_offset;
2773 int java_lang_boxing_object::long_value_offset;
2774 int java_lang_ref_Reference::referent_offset;
2775 int java_lang_ref_Reference::queue_offset;
2776 int java_lang_ref_Reference::next_offset;
2777 int java_lang_ref_Reference::discovered_offset;
2778 int java_lang_ref_Reference::static_lock_offset;
2779 int java_lang_ref_Reference::static_pending_offset;
2780 int java_lang_ref_Reference::number_of_fake_oop_fields;
2781 int java_lang_ref_SoftReference::timestamp_offset;
2782 int java_lang_ref_SoftReference::static_clock_offset;
2783 int java_lang_ClassLoader::parent_offset;
2784 int java_lang_System::static_in_offset;
2785 int java_lang_System::static_out_offset;
2786 int java_lang_System::static_err_offset;
2787 int java_lang_StackTraceElement::declaringClass_offset;
2788 int java_lang_StackTraceElement::methodName_offset;
2789 int java_lang_StackTraceElement::fileName_offset;
2790 int java_lang_StackTraceElement::lineNumber_offset;
2791 int java_lang_AssertionStatusDirectives::classes_offset;
2792 int java_lang_AssertionStatusDirectives::classEnabled_offset;
2793 int java_lang_AssertionStatusDirectives::packages_offset;
2794 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
2795 int java_lang_AssertionStatusDirectives::deflt_offset;
2796 int java_nio_Buffer::_limit_offset;
2797 int sun_misc_AtomicLongCSImpl::_value_offset;
2798 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
2799 int sun_reflect_ConstantPool::_cp_oop_offset;
2800 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
2803 // Support for java_lang_StackTraceElement
2805 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
2806 element->obj_field_put(fileName_offset, value);
2807 }
2809 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
2810 element->obj_field_put(declaringClass_offset, value);
2811 }
2813 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
2814 element->obj_field_put(methodName_offset, value);
2815 }
2817 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
2818 element->int_field_put(lineNumber_offset, value);
2819 }
2822 // Support for java Assertions - java_lang_AssertionStatusDirectives.
2824 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
2825 o->obj_field_put(classes_offset, val);
2826 }
2828 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
2829 o->obj_field_put(classEnabled_offset, val);
2830 }
2832 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
2833 o->obj_field_put(packages_offset, val);
2834 }
2836 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
2837 o->obj_field_put(packageEnabled_offset, val);
2838 }
2840 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
2841 o->bool_field_put(deflt_offset, val);
2842 }
2845 // Support for intrinsification of java.nio.Buffer.checkIndex
2846 int java_nio_Buffer::limit_offset() {
2847 return _limit_offset;
2848 }
2851 void java_nio_Buffer::compute_offsets() {
2852 klassOop k = SystemDictionary::java_nio_Buffer_klass();
2853 assert(k != NULL, "must be loaded in 1.4+");
2854 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
2855 }
2857 // Support for intrinsification of sun.misc.AtomicLongCSImpl.attemptUpdate
2858 int sun_misc_AtomicLongCSImpl::value_offset() {
2859 assert(SystemDictionary::sun_misc_AtomicLongCSImpl_klass() != NULL, "can't call this");
2860 return _value_offset;
2861 }
2864 void sun_misc_AtomicLongCSImpl::compute_offsets() {
2865 klassOop k = SystemDictionary::sun_misc_AtomicLongCSImpl_klass();
2866 // If this class is not present, its value field offset won't be referenced.
2867 if (k != NULL) {
2868 compute_offset(_value_offset, k, vmSymbols::value_name(), vmSymbols::long_signature());
2869 }
2870 }
2872 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
2873 if (_owner_offset != 0) return;
2875 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later");
2876 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
2877 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass();
2878 compute_offset(_owner_offset, k,
2879 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
2880 }
2882 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
2883 assert(_owner_offset != 0, "Must be initialized");
2884 return obj->obj_field(_owner_offset);
2885 }
2887 // Compute hard-coded offsets
2888 // Invoked before SystemDictionary::initialize, so pre-loaded classes
2889 // are not available to determine the offset_of_static_fields.
2890 void JavaClasses::compute_hard_coded_offsets() {
2891 const int x = heapOopSize;
2892 const int header = instanceOopDesc::base_offset_in_bytes();
2894 // Do the String Class
2895 java_lang_String::value_offset = java_lang_String::hc_value_offset * x + header;
2896 java_lang_String::offset_offset = java_lang_String::hc_offset_offset * x + header;
2897 java_lang_String::count_offset = java_lang_String::offset_offset + sizeof (jint);
2898 java_lang_String::hash_offset = java_lang_String::count_offset + sizeof (jint);
2900 {
2901 // Do the Class Class
2902 int offset = header;
2903 java_lang_Class::oop_size_offset = header;
2904 offset += BytesPerInt;
2905 java_lang_Class::static_oop_field_count_offset = offset;
2906 offset = align_size_up(offset + BytesPerInt, x);
2907 java_lang_Class::klass_offset = offset;
2908 offset += x;
2909 java_lang_Class::array_klass_offset = offset;
2910 offset += x;
2911 java_lang_Class::resolved_constructor_offset = offset;
2912 }
2914 // This is NOT an offset
2915 java_lang_Class::number_of_fake_oop_fields = java_lang_Class::hc_number_of_fake_oop_fields;
2917 // Throwable Class
2918 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
2919 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
2920 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
2921 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
2923 // java_lang_boxing_object
2924 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
2925 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
2927 // java_lang_ref_Reference:
2928 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
2929 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
2930 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
2931 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
2932 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
2933 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
2934 // Artificial fields for java_lang_ref_Reference
2935 // The first field is for the discovered field added in 1.4
2936 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
2938 // java_lang_ref_SoftReference Class
2939 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
2940 // Don't multiply static fields because they are always in wordSize units
2941 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
2943 // java_lang_ClassLoader
2944 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
2946 // java_lang_System
2947 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
2948 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
2949 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
2951 // java_lang_StackTraceElement
2952 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
2953 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
2954 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
2955 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
2956 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
2957 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
2958 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
2959 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
2960 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
2962 }
2965 // Compute non-hard-coded field offsets of all the classes in this file
2966 void JavaClasses::compute_offsets() {
2968 java_lang_Class::compute_offsets();
2969 java_lang_Thread::compute_offsets();
2970 java_lang_ThreadGroup::compute_offsets();
2971 if (EnableInvokeDynamic) {
2972 java_lang_invoke_MethodHandle::compute_offsets();
2973 java_lang_invoke_MemberName::compute_offsets();
2974 java_lang_invoke_DirectMethodHandle::compute_offsets();
2975 java_lang_invoke_BoundMethodHandle::compute_offsets();
2976 java_lang_invoke_AdapterMethodHandle::compute_offsets();
2977 java_lang_invoke_MethodType::compute_offsets();
2978 java_lang_invoke_MethodTypeForm::compute_offsets();
2979 java_lang_invoke_CallSite::compute_offsets();
2980 }
2981 java_security_AccessControlContext::compute_offsets();
2982 // Initialize reflection classes. The layouts of these classes
2983 // changed with the new reflection implementation in JDK 1.4, and
2984 // since the Universe doesn't know what JDK version it is until this
2985 // point we defer computation of these offsets until now.
2986 java_lang_reflect_AccessibleObject::compute_offsets();
2987 java_lang_reflect_Method::compute_offsets();
2988 java_lang_reflect_Constructor::compute_offsets();
2989 java_lang_reflect_Field::compute_offsets();
2990 if (JDK_Version::is_gte_jdk14x_version()) {
2991 java_nio_Buffer::compute_offsets();
2992 }
2993 if (JDK_Version::is_gte_jdk15x_version()) {
2994 sun_reflect_ConstantPool::compute_offsets();
2995 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
2996 }
2997 sun_misc_AtomicLongCSImpl::compute_offsets();
2999 // generated interpreter code wants to know about the offsets we just computed:
3000 AbstractAssembler::update_delayed_values();
3001 }
3003 #ifndef PRODUCT
3005 // These functions exist to assert the validity of hard-coded field offsets to guard
3006 // against changes in the class files
3008 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3009 EXCEPTION_MARK;
3010 fieldDescriptor fd;
3011 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3012 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3013 instanceKlassHandle h_klass (THREAD, k);
3014 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3015 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3016 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3017 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3018 return false;
3019 }
3020 if (fd.is_static()) {
3021 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3022 return false;
3023 }
3024 if (fd.offset() == hardcoded_offset ) {
3025 return true;
3026 } else {
3027 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3028 klass_name, field_name, hardcoded_offset, fd.offset());
3029 return false;
3030 }
3031 }
3034 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3035 EXCEPTION_MARK;
3036 fieldDescriptor fd;
3037 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3038 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3039 instanceKlassHandle h_klass (THREAD, k);
3040 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3041 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3042 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3043 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3044 return false;
3045 }
3046 if (!fd.is_static()) {
3047 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3048 return false;
3049 }
3050 if (fd.offset() == hardcoded_offset + instanceMirrorKlass::offset_of_static_fields()) {
3051 return true;
3052 } else {
3053 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());
3054 return false;
3055 }
3056 }
3059 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3060 EXCEPTION_MARK;
3061 fieldDescriptor fd;
3062 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3063 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3064 instanceKlassHandle h_klass (THREAD, k);
3065 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3066 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3067 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3068 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3069 return false;
3070 }
3071 if (!fd.is_static() || !fd.has_initial_value()) {
3072 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3073 return false;
3074 }
3075 if (!fd.initial_value_tag().is_int()) {
3076 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3077 return false;
3078 }
3079 jint field_value = fd.int_initial_value();
3080 if (field_value == hardcoded_constant) {
3081 return true;
3082 } else {
3083 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);
3084 return false;
3085 }
3086 }
3089 // Check the hard-coded field offsets of all the classes in this file
3091 void JavaClasses::check_offsets() {
3092 bool valid = true;
3094 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3095 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3097 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3098 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3100 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3101 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3103 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3104 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3106 // java.lang.String
3108 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3109 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3110 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3111 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3113 // java.lang.Class
3115 // Fake fields
3116 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3117 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3118 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked
3120 // java.lang.Throwable
3122 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3123 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3124 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3125 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3127 // Boxed primitive objects (java_lang_boxing_object)
3129 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3130 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3131 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3132 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3133 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3134 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3135 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3136 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3138 // java.lang.ClassLoader
3140 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3142 // java.lang.System
3144 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3145 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3146 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3148 // java.lang.StackTraceElement
3150 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3151 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3152 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3153 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3155 // java.lang.ref.Reference
3157 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3158 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3159 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3160 // Fake field
3161 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3162 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3163 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3165 // java.lang.ref.SoftReference
3167 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3168 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3170 // java.lang.AssertionStatusDirectives
3171 //
3172 // The CheckAssertionStatusDirectives boolean can be removed from here and
3173 // globals.hpp after the AssertionStatusDirectives class has been integrated
3174 // into merlin "for some time." Without it, the vm will fail with early
3175 // merlin builds.
3177 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) {
3178 const char* nm = "java/lang/AssertionStatusDirectives";
3179 const char* sig = "[Ljava/lang/String;";
3180 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3181 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3182 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3183 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3184 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3185 }
3187 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3188 }
3190 #endif // PRODUCT
3192 void javaClasses_init() {
3193 JavaClasses::compute_offsets();
3194 JavaClasses::check_offsets();
3195 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3196 }