1 /*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/altHashing.hpp"
27 #include "classfile/javaClasses.hpp"
28 #include "classfile/stringTable.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "code/debugInfo.hpp"
31 #include "code/pcDesc.hpp"
32 #include "compiler/compilerOracle.hpp"
33 #include "interpreter/interpreter.hpp"
34 #include "memory/oopFactory.hpp"
35 #include "memory/resourceArea.hpp"
36 #include "memory/universe.inline.hpp"
37 #include "oops/fieldStreams.hpp"
38 #include "oops/instanceKlass.hpp"
39 #include "oops/instanceMirrorKlass.hpp"
40 #include "oops/klass.hpp"
41 #include "oops/method.hpp"
42 #include "oops/symbol.hpp"
43 #include "oops/typeArrayOop.hpp"
44 #include "runtime/fieldDescriptor.hpp"
45 #include "runtime/handles.inline.hpp"
46 #include "runtime/interfaceSupport.hpp"
47 #include "runtime/java.hpp"
48 #include "runtime/javaCalls.hpp"
49 #include "runtime/safepoint.hpp"
50 #include "runtime/thread.inline.hpp"
51 #include "runtime/vframe.hpp"
52 #include "utilities/preserveException.hpp"
53
54 PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC
55
56 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
57 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
58
59 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
60 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
61
62 InjectedField JavaClasses::_injected_fields[] = {
63 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
64 };
65
66 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
67 return _injected_fields[id].compute_offset();
68 }
69
70
71 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
72 *field_count = 0;
73
74 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
75 if (sid == vmSymbols::NO_SID) {
76 // Only well known classes can inject fields
77 return NULL;
78 }
79
80 int count = 0;
81 int start = -1;
82
83 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
84 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
85 count++; \
86 if (start == -1) start = klass##_##name##_enum; \
87 }
88 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
89 #undef LOOKUP_INJECTED_FIELD
90
91 if (start != -1) {
92 *field_count = count;
93 return _injected_fields + start;
94 }
95 return NULL;
96 }
97
98
99 static bool find_field(InstanceKlass* ik,
100 Symbol* name_symbol, Symbol* signature_symbol,
101 fieldDescriptor* fd,
102 bool allow_super = false) {
103 if (allow_super)
104 return ik->find_field(name_symbol, signature_symbol, fd) != NULL;
105 else
106 return ik->find_local_field(name_symbol, signature_symbol, fd);
107 }
108
109 // Helpful routine for computing field offsets at run time rather than hardcoding them
110 static void
111 compute_offset(int &dest_offset,
112 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
113 bool allow_super = false) {
114 fieldDescriptor fd;
115 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
116 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
117 ResourceMark rm;
118 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
119 #ifndef PRODUCT
120 klass_oop->print();
121 tty->print_cr("all fields:");
122 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
123 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
124 }
125 #endif //PRODUCT
126 fatal("Invalid layout of preloaded class");
127 }
128 dest_offset = fd.offset();
129 }
130
131 // Same as above but for "optional" offsets that might not be present in certain JDK versions
132 static void
133 compute_optional_offset(int& dest_offset,
134 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol,
135 bool allow_super = false) {
136 fieldDescriptor fd;
137 InstanceKlass* ik = InstanceKlass::cast(klass_oop);
138 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
139 dest_offset = fd.offset();
140 }
141 }
142
143
144 int java_lang_String::value_offset = 0;
145 int java_lang_String::offset_offset = 0;
146 int java_lang_String::count_offset = 0;
147 int java_lang_String::hash_offset = 0;
148
149 bool java_lang_String::initialized = false;
150
151 void java_lang_String::compute_offsets() {
152 assert(!initialized, "offsets should be initialized only once");
153
154 Klass* k = SystemDictionary::String_klass();
155 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
156 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
157 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
158 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
159
160 initialized = true;
161 }
162
163 Handle java_lang_String::basic_create(int length, TRAPS) {
164 assert(initialized, "Must be initialized");
165 // Create the String object first, so there's a chance that the String
166 // and the char array it points to end up in the same cache line.
167 oop obj;
168 obj = InstanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH);
169
170 // Create the char array. The String object must be handlized here
171 // because GC can happen as a result of the allocation attempt.
172 Handle h_obj(THREAD, obj);
173 typeArrayOop buffer;
174 buffer = oopFactory::new_charArray(length, CHECK_NH);
175
176 // Point the String at the char array
177 obj = h_obj();
178 set_value(obj, buffer);
179 // No need to zero the offset, allocation zero'ed the entire String object
180 assert(offset(obj) == 0, "initial String offset should be zero");
181 //set_offset(obj, 0);
182 set_count(obj, length);
183
184 return h_obj;
185 }
186
187 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
188 Handle h_obj = basic_create(length, CHECK_NH);
189 typeArrayOop buffer = value(h_obj());
190 for (int index = 0; index < length; index++) {
191 buffer->char_at_put(index, unicode[index]);
192 }
193 return h_obj;
194 }
195
196 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
197 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
198 return h_obj();
199 }
200
201 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
202 if (utf8_str == NULL) {
203 return Handle();
204 }
205 int length = UTF8::unicode_length(utf8_str);
206 Handle h_obj = basic_create(length, CHECK_NH);
207 if (length > 0) {
208 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
209 }
210 return h_obj;
211 }
212
213 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
214 Handle h_obj = create_from_str(utf8_str, CHECK_0);
215 return h_obj();
216 }
217
218 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
219 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
220 Handle h_obj = basic_create(length, CHECK_NH);
221 if (length > 0) {
222 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
223 }
224 return h_obj;
225 }
226
227 // Converts a C string to a Java String based on current encoding
228 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
229 assert(str != NULL, "bad arguments");
230
231 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
232 static to_java_string_fn_t _to_java_string_fn = NULL;
233
234 if (_to_java_string_fn == NULL) {
235 void *lib_handle = os::native_java_library();
236 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
237 if (_to_java_string_fn == NULL) {
238 fatal("NewStringPlatform missing");
239 }
240 }
241
242 jstring js = NULL;
243 { JavaThread* thread = (JavaThread*)THREAD;
244 assert(thread->is_Java_thread(), "must be java thread");
245 HandleMark hm(thread);
246 ThreadToNativeFromVM ttn(thread);
247 js = (_to_java_string_fn)(thread->jni_environment(), str);
248 }
249 return Handle(THREAD, JNIHandles::resolve(js));
250 }
251
252 // Converts a Java String to a native C string that can be used for
253 // native OS calls.
254 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
255
256 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
257 static to_platform_string_fn_t _to_platform_string_fn = NULL;
258
259 if (_to_platform_string_fn == NULL) {
260 void *lib_handle = os::native_java_library();
261 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
262 if (_to_platform_string_fn == NULL) {
263 fatal("GetStringPlatformChars missing");
264 }
265 }
266
267 char *native_platform_string;
268 { JavaThread* thread = (JavaThread*)THREAD;
269 assert(thread->is_Java_thread(), "must be java thread");
270 JNIEnv *env = thread->jni_environment();
271 jstring js = (jstring) JNIHandles::make_local(env, java_string());
272 bool is_copy;
273 HandleMark hm(thread);
274 ThreadToNativeFromVM ttn(thread);
275 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
276 assert(is_copy == JNI_TRUE, "is_copy value changed");
277 JNIHandles::destroy_local(js);
278 }
279 return native_platform_string;
280 }
281
282 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
283 oop obj = java_string();
284 // Typical usage is to convert all '/' to '.' in string.
285 typeArrayOop value = java_lang_String::value(obj);
286 int offset = java_lang_String::offset(obj);
287 int length = java_lang_String::length(obj);
288
289 // First check if any from_char exist
290 int index; // Declared outside, used later
291 for (index = 0; index < length; index++) {
292 if (value->char_at(index + offset) == from_char) {
293 break;
294 }
295 }
296 if (index == length) {
297 // No from_char, so do not copy.
298 return java_string;
299 }
300
301 // Create new UNICODE buffer. Must handlize value because GC
302 // may happen during String and char array creation.
303 typeArrayHandle h_value(THREAD, value);
304 Handle string = basic_create(length, CHECK_NH);
305
306 typeArrayOop from_buffer = h_value();
307 typeArrayOop to_buffer = java_lang_String::value(string());
308
309 // Copy contents
310 for (index = 0; index < length; index++) {
311 jchar c = from_buffer->char_at(index + offset);
312 if (c == from_char) {
313 c = to_char;
314 }
315 to_buffer->char_at_put(index, c);
316 }
317 return string;
318 }
319
320 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
321 typeArrayOop value = java_lang_String::value(java_string);
322 int offset = java_lang_String::offset(java_string);
323 length = java_lang_String::length(java_string);
324
325 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
326 if (result != NULL) {
327 for (int index = 0; index < length; index++) {
328 result[index] = value->char_at(index + offset);
329 }
330 } else {
331 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
332 }
333 return result;
334 }
335
336 unsigned int java_lang_String::hash_code(oop java_string) {
337 int length = java_lang_String::length(java_string);
338 // Zero length string will hash to zero with String.hashCode() function.
339 if (length == 0) return 0;
340
341 typeArrayOop value = java_lang_String::value(java_string);
342 int offset = java_lang_String::offset(java_string);
343 return java_lang_String::hash_code(value->char_at_addr(offset), length);
344 }
345
346 char* java_lang_String::as_quoted_ascii(oop 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
351 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
352 if (base == NULL) return NULL;
353
354 int result_length = UNICODE::quoted_ascii_length(base, length) + 1;
355 char* result = NEW_RESOURCE_ARRAY(char, result_length);
356 UNICODE::as_quoted_ascii(base, length, result, result_length);
357 assert(result_length >= length + 1, "must not be shorter");
358 assert(result_length == (int)strlen(result) + 1, "must match");
359 return result;
360 }
361
362 unsigned int java_lang_String::hash_string(oop java_string) {
363 int length = java_lang_String::length(java_string);
364 // Zero length string doesn't hash necessarily hash to zero.
365 if (length == 0) {
366 return StringTable::hash_string(NULL, 0);
367 }
368
369 typeArrayOop value = java_lang_String::value(java_string);
370 int offset = java_lang_String::offset(java_string);
371 return StringTable::hash_string(value->char_at_addr(offset), length);
372 }
373
374 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
375 oop obj = java_string();
376 typeArrayOop value = java_lang_String::value(obj);
377 int offset = java_lang_String::offset(obj);
378 int length = java_lang_String::length(obj);
379 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
380 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
381 return sym;
382 }
383
384 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
385 typeArrayOop value = java_lang_String::value(java_string);
386 int offset = java_lang_String::offset(java_string);
387 int length = java_lang_String::length(java_string);
388 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
389 return SymbolTable::probe_unicode(base, length);
390 }
391
392
393 int java_lang_String::utf8_length(oop java_string) {
394 typeArrayOop value = java_lang_String::value(java_string);
395 int offset = java_lang_String::offset(java_string);
396 int length = java_lang_String::length(java_string);
397 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
398 return UNICODE::utf8_length(position, length);
399 }
400
401 char* java_lang_String::as_utf8_string(oop java_string) {
402 typeArrayOop value = java_lang_String::value(java_string);
403 int offset = java_lang_String::offset(java_string);
404 int length = java_lang_String::length(java_string);
405 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
406 return UNICODE::as_utf8(position, length);
407 }
408
409 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
410 typeArrayOop value = java_lang_String::value(java_string);
411 int offset = java_lang_String::offset(java_string);
412 int length = java_lang_String::length(java_string);
413 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
414 return UNICODE::as_utf8(position, length, buf, buflen);
415 }
416
417 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
418 typeArrayOop value = java_lang_String::value(java_string);
419 int offset = java_lang_String::offset(java_string);
420 int length = java_lang_String::length(java_string);
421 assert(start + len <= length, "just checking");
422 jchar* position = value->char_at_addr(offset + start);
423 return UNICODE::as_utf8(position, len);
424 }
425
426 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
427 typeArrayOop value = java_lang_String::value(java_string);
428 int offset = java_lang_String::offset(java_string);
429 int length = java_lang_String::length(java_string);
430 assert(start + len <= length, "just checking");
431 jchar* position = value->char_at_addr(offset + start);
432 return UNICODE::as_utf8(position, len, buf, buflen);
433 }
434
435 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
436 assert(java_string->klass() == SystemDictionary::String_klass(),
437 "must be java_string");
438 typeArrayOop value = java_lang_String::value(java_string);
439 int offset = java_lang_String::offset(java_string);
440 int length = java_lang_String::length(java_string);
441 if (length != len) {
442 return false;
443 }
444 for (int i = 0; i < len; i++) {
445 if (value->char_at(i + offset) != chars[i]) {
446 return false;
447 }
448 }
449 return true;
450 }
451
452 bool java_lang_String::equals(oop str1, oop str2) {
453 assert(str1->klass() == SystemDictionary::String_klass(),
454 "must be java String");
455 assert(str2->klass() == SystemDictionary::String_klass(),
456 "must be java String");
457 typeArrayOop value1 = java_lang_String::value(str1);
458 int offset1 = java_lang_String::offset(str1);
459 int length1 = java_lang_String::length(str1);
460 typeArrayOop value2 = java_lang_String::value(str2);
461 int offset2 = java_lang_String::offset(str2);
462 int length2 = java_lang_String::length(str2);
463
464 if (length1 != length2) {
465 return false;
466 }
467 for (int i = 0; i < length1; i++) {
468 if (value1->char_at(i + offset1) != value2->char_at(i + offset2)) {
469 return false;
470 }
471 }
472 return true;
473 }
474
475 void java_lang_String::print(oop java_string, outputStream* st) {
476 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
477 typeArrayOop value = java_lang_String::value(java_string);
478
479 if (value == NULL) {
480 // This can happen if, e.g., printing a String
481 // object before its initializer has been called
482 st->print("NULL");
483 return;
484 }
485
486 int offset = java_lang_String::offset(java_string);
487 int length = java_lang_String::length(java_string);
488
489 st->print("\"");
490 for (int index = 0; index < length; index++) {
491 st->print("%c", value->char_at(index + offset));
492 }
493 st->print("\"");
494 }
495
496
497 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
498 assert(mirror.not_null() && fd->is_static(), "just checking");
499 if (fd->has_initial_value()) {
500 BasicType t = fd->field_type();
501 switch (t) {
502 case T_BYTE:
503 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
504 break;
505 case T_BOOLEAN:
506 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
507 break;
508 case T_CHAR:
509 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
510 break;
511 case T_SHORT:
512 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
513 break;
514 case T_INT:
515 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
516 break;
517 case T_FLOAT:
518 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
519 break;
520 case T_DOUBLE:
521 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
522 break;
523 case T_LONG:
524 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
525 break;
526 case T_OBJECT:
527 {
528 #ifdef ASSERT
529 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
530 assert(fd->signature() == sym, "just checking");
531 #endif
532 oop string = fd->string_initial_value(CHECK);
533 mirror()->obj_field_put(fd->offset(), string);
534 }
535 break;
536 default:
537 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
538 "Illegal ConstantValue attribute in class file");
539 }
540 }
541 }
542
543
544 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
545 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
546
547 // If the offset was read from the shared archive, it was fixed up already
548 if (!k->is_shared()) {
549 if (k->oop_is_instance()) {
550 // During bootstrap, java.lang.Class wasn't loaded so static field
551 // offsets were computed without the size added it. Go back and
552 // update all the static field offsets to included the size.
553 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
554 if (fs.access_flags().is_static()) {
555 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
556 fs.set_offset(real_offset);
557 }
558 }
559 }
560 }
561 create_mirror(k, Handle(NULL), Handle(NULL), CHECK);
562 }
563
564 void java_lang_Class::initialize_mirror_fields(KlassHandle k,
565 Handle mirror,
566 Handle protection_domain,
567 TRAPS) {
568 // Allocate a simple java object for a lock.
569 // This needs to be a java object because during class initialization
570 // it can be held across a java call.
571 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
572 set_init_lock(mirror(), r);
573
574 // Set protection domain also
575 set_protection_domain(mirror(), protection_domain());
576
577 // Initialize static fields
578 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, mirror, CHECK);
579 }
580
581 void java_lang_Class::create_mirror(KlassHandle k, Handle class_loader,
582 Handle protection_domain, TRAPS) {
583 assert(k->java_mirror() == NULL, "should only assign mirror once");
584 // Use this moment of initialization to cache modifier_flags also,
585 // to support Class.getModifiers(). Instance classes recalculate
586 // the cached flags after the class file is parsed, but before the
587 // class is put into the system dictionary.
588 int computed_modifiers = k->compute_modifier_flags(CHECK);
589 k->set_modifier_flags(computed_modifiers);
590 // Class_klass has to be loaded because it is used to allocate
591 // the mirror.
592 if (SystemDictionary::Class_klass_loaded()) {
593 // Allocate mirror (java.lang.Class instance)
594 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
595
596 // Setup indirection from mirror->klass
597 if (!k.is_null()) {
598 java_lang_Class::set_klass(mirror(), k());
599 }
600
601 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
602 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
603
604 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
605
606 // It might also have a component mirror. This mirror must already exist.
607 if (k->oop_is_array()) {
608 Handle comp_mirror;
609 if (k->oop_is_typeArray()) {
610 BasicType type = TypeArrayKlass::cast(k())->element_type();
611 comp_mirror = Universe::java_mirror(type);
612 } else {
613 assert(k->oop_is_objArray(), "Must be");
614 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
615 assert(element_klass != NULL, "Must have an element klass");
616 comp_mirror = element_klass->java_mirror();
617 }
618 assert(comp_mirror.not_null(), "must have a mirror");
619
620 // Two-way link between the array klass and its component mirror:
621 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
622 set_component_mirror(mirror(), comp_mirror());
623 ArrayKlass::cast(k())->set_component_mirror(comp_mirror());
624 set_array_klass(comp_mirror(), k());
625 } else {
626 assert(k->oop_is_instance(), "Must be");
627
628 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
629 if (HAS_PENDING_EXCEPTION) {
630 // If any of the fields throws an exception like OOM remove the klass field
631 // from the mirror so GC doesn't follow it after the klass has been deallocated.
632 // This mirror looks like a primitive type, which logically it is because it
633 // it represents no class.
634 java_lang_Class::set_klass(mirror(), NULL);
635 return;
636 }
637 }
638
639 // set the classLoader field in the java_lang_Class instance
640 set_class_loader(mirror(), class_loader());
641
642 // Setup indirection from klass->mirror last
643 // after any exceptions can happen during allocations.
644 if (!k.is_null()) {
645 k->set_java_mirror(mirror());
646 }
647 } else {
648 if (fixup_mirror_list() == NULL) {
649 GrowableArray<Klass*>* list =
650 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
651 set_fixup_mirror_list(list);
652 }
653 fixup_mirror_list()->push(k());
654 }
655 }
656
657
658 int java_lang_Class::oop_size(oop java_class) {
659 assert(_oop_size_offset != 0, "must be set");
660 return java_class->int_field(_oop_size_offset);
661 }
662 void java_lang_Class::set_oop_size(oop java_class, int size) {
663 assert(_oop_size_offset != 0, "must be set");
664 java_class->int_field_put(_oop_size_offset, size);
665 }
666 int java_lang_Class::static_oop_field_count(oop java_class) {
667 assert(_static_oop_field_count_offset != 0, "must be set");
668 return java_class->int_field(_static_oop_field_count_offset);
669 }
670 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
671 assert(_static_oop_field_count_offset != 0, "must be set");
672 java_class->int_field_put(_static_oop_field_count_offset, size);
673 }
674
675 oop java_lang_Class::protection_domain(oop java_class) {
676 assert(_protection_domain_offset != 0, "must be set");
677 return java_class->obj_field(_protection_domain_offset);
678 }
679 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
680 assert(_protection_domain_offset != 0, "must be set");
681 java_class->obj_field_put(_protection_domain_offset, pd);
682 }
683
684 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
685 if (_component_mirror_offset != 0) {
686 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
687 }
688 }
689 oop java_lang_Class::component_mirror(oop java_class) {
690 assert(_component_mirror_offset != 0, "must be set");
691 return java_class->obj_field(_component_mirror_offset);
692 }
693
694 oop java_lang_Class::init_lock(oop java_class) {
695 assert(_init_lock_offset != 0, "must be set");
696 return java_class->obj_field(_init_lock_offset);
697 }
698 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
699 assert(_init_lock_offset != 0, "must be set");
700 java_class->obj_field_put(_init_lock_offset, init_lock);
701 }
702
703 objArrayOop java_lang_Class::signers(oop java_class) {
704 assert(_signers_offset != 0, "must be set");
705 return (objArrayOop)java_class->obj_field(_signers_offset);
706 }
707 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
708 assert(_signers_offset != 0, "must be set");
709 java_class->obj_field_put(_signers_offset, (oop)signers);
710 }
711
712
713 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
714 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
715 if (_class_loader_offset != 0) {
716 java_class->obj_field_put(_class_loader_offset, loader);
717 }
718 }
719
720 oop java_lang_Class::class_loader(oop java_class) {
721 assert(_class_loader_offset != 0, "must be set");
722 return java_class->obj_field(_class_loader_offset);
723 }
724
725 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
726 // This should be improved by adding a field at the Java level or by
727 // introducing a new VM klass (see comment in ClassFileParser)
728 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
729 if (type != T_VOID) {
730 Klass* aklass = Universe::typeArrayKlassObj(type);
731 assert(aklass != NULL, "correct bootstrap");
732 set_array_klass(java_class, aklass);
733 }
734 #ifdef ASSERT
735 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
736 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
737 #endif
738 return java_class;
739 }
740
741
742 Klass* java_lang_Class::as_Klass(oop java_class) {
743 //%note memory_2
744 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
745 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
746 assert(k == NULL || k->is_klass(), "type check");
747 return k;
748 }
749
750
751 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
752 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
753 java_class->metadata_field_put(_klass_offset, klass);
754 }
755
756
757 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
758 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
759 Symbol* name = NULL;
760 bool is_instance = false;
761 if (is_primitive(java_class)) {
762 name = vmSymbols::type_signature(primitive_type(java_class));
763 } else {
764 Klass* k = as_Klass(java_class);
765 is_instance = k->oop_is_instance();
766 name = k->name();
767 }
768 if (name == NULL) {
769 st->print("<null>");
770 return;
771 }
772 if (is_instance) st->print("L");
773 st->write((char*) name->base(), (int) name->utf8_length());
774 if (is_instance) st->print(";");
775 }
776
777 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
778 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
779 Symbol* name;
780 if (is_primitive(java_class)) {
781 name = vmSymbols::type_signature(primitive_type(java_class));
782 // Because this can create a new symbol, the caller has to decrement
783 // the refcount, so make adjustment here and below for symbols returned
784 // that are not created or incremented due to a successful lookup.
785 name->increment_refcount();
786 } else {
787 Klass* k = as_Klass(java_class);
788 if (!k->oop_is_instance()) {
789 name = k->name();
790 name->increment_refcount();
791 } else {
792 ResourceMark rm;
793 const char* sigstr = k->signature_name();
794 int siglen = (int) strlen(sigstr);
795 if (!intern_if_not_found) {
796 name = SymbolTable::probe(sigstr, siglen);
797 } else {
798 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
799 }
800 }
801 }
802 return name;
803 }
804
805
806 Klass* java_lang_Class::array_klass(oop java_class) {
807 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
808 assert(k == NULL || k->is_klass() && k->oop_is_array(), "should be array klass");
809 return k;
810 }
811
812
813 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
814 assert(klass->is_klass() && klass->oop_is_array(), "should be array klass");
815 java_class->metadata_field_put(_array_klass_offset, klass);
816 }
817
818
819 bool java_lang_Class::is_primitive(oop java_class) {
820 // should assert:
821 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
822 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
823
824 #ifdef ASSERT
825 if (is_primitive) {
826 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
827 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
828 "Should be either the T_VOID primitive or a java primitive");
829 }
830 #endif
831
832 return is_primitive;
833 }
834
835
836 BasicType java_lang_Class::primitive_type(oop java_class) {
837 assert(java_lang_Class::is_primitive(java_class), "just checking");
838 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
839 BasicType type = T_VOID;
840 if (ak != NULL) {
841 // Note: create_basic_type_mirror above initializes ak to a non-null value.
842 type = ArrayKlass::cast(ak)->element_type();
843 } else {
844 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
845 }
846 assert(Universe::java_mirror(type) == java_class, "must be consistent");
847 return type;
848 }
849
850 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
851 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
852 if (is_primitive(java_class)) {
853 if (reference_klass != NULL)
854 (*reference_klass) = NULL;
855 return primitive_type(java_class);
856 } else {
857 if (reference_klass != NULL)
858 (*reference_klass) = as_Klass(java_class);
859 return T_OBJECT;
860 }
861 }
862
863
864 oop java_lang_Class::primitive_mirror(BasicType t) {
865 oop mirror = Universe::java_mirror(t);
866 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
867 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
868 return mirror;
869 }
870
871 bool java_lang_Class::offsets_computed = false;
872 int java_lang_Class::classRedefinedCount_offset = -1;
873
874 void java_lang_Class::compute_offsets() {
875 assert(!offsets_computed, "offsets should be initialized only once");
876 offsets_computed = true;
877
878 Klass* klass_oop = SystemDictionary::Class_klass();
879 // The classRedefinedCount field is only present starting in 1.5,
880 // so don't go fatal.
881 compute_optional_offset(classRedefinedCount_offset,
882 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
883
884 // Needs to be optional because the old build runs Queens during bootstrapping
885 // and jdk8-9 doesn't have coordinated pushes yet.
886 compute_optional_offset(_class_loader_offset,
887 klass_oop, vmSymbols::classLoader_name(),
888 vmSymbols::classloader_signature());
889
890 compute_optional_offset(_component_mirror_offset,
891 klass_oop, vmSymbols::componentType_name(),
892 vmSymbols::class_signature());
893
894 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
895 }
896
897 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
898 if (classRedefinedCount_offset == -1) {
899 // If we don't have an offset for it then just return -1 as a marker.
900 return -1;
901 }
902
903 return the_class_mirror->int_field(classRedefinedCount_offset);
904 }
905
906 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
907 if (classRedefinedCount_offset == -1) {
908 // If we don't have an offset for it then nothing to set.
909 return;
910 }
911
912 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
913 }
914
915
916 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
917 // platform thread structure, and a eetop offset which was used for thread
918 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
919 // merged, so in the HotSpot VM we just use the eetop field for the thread
920 // instead of the privateInfo_offset.
921 //
922 // Note: The stackSize field is only present starting in 1.4.
923
924 int java_lang_Thread::_name_offset = 0;
925 int java_lang_Thread::_group_offset = 0;
926 int java_lang_Thread::_contextClassLoader_offset = 0;
927 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
928 int java_lang_Thread::_priority_offset = 0;
929 int java_lang_Thread::_eetop_offset = 0;
930 int java_lang_Thread::_daemon_offset = 0;
931 int java_lang_Thread::_stillborn_offset = 0;
932 int java_lang_Thread::_stackSize_offset = 0;
933 int java_lang_Thread::_tid_offset = 0;
934 int java_lang_Thread::_thread_status_offset = 0;
935 int java_lang_Thread::_park_blocker_offset = 0;
936 int java_lang_Thread::_park_event_offset = 0 ;
937
938
939 void java_lang_Thread::compute_offsets() {
940 assert(_group_offset == 0, "offsets should be initialized only once");
941
942 Klass* k = SystemDictionary::Thread_klass();
943 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature());
944 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
945 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
946 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
947 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
948 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
949 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
950 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
951 // The stackSize field is only present starting in 1.4, so don't go fatal.
952 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
953 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
954 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
955 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
956 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
957 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
958 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
959 vmSymbols::long_signature());
960 }
961
962
963 JavaThread* java_lang_Thread::thread(oop java_thread) {
964 return (JavaThread*)java_thread->address_field(_eetop_offset);
965 }
966
967
968 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
969 java_thread->address_field_put(_eetop_offset, (address)thread);
970 }
971
972
973 typeArrayOop java_lang_Thread::name(oop java_thread) {
974 oop name = java_thread->obj_field(_name_offset);
975 assert(name == NULL || (name->is_typeArray() && TypeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking");
976 return typeArrayOop(name);
977 }
978
979
980 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) {
981 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL");
982 java_thread->obj_field_put(_name_offset, name);
983 }
984
985
986 ThreadPriority java_lang_Thread::priority(oop java_thread) {
987 return (ThreadPriority)java_thread->int_field(_priority_offset);
988 }
989
990
991 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
992 java_thread->int_field_put(_priority_offset, priority);
993 }
994
995
996 oop java_lang_Thread::threadGroup(oop java_thread) {
997 return java_thread->obj_field(_group_offset);
998 }
999
1000
1001 bool java_lang_Thread::is_stillborn(oop java_thread) {
1002 return java_thread->bool_field(_stillborn_offset) != 0;
1003 }
1004
1005
1006 // We never have reason to turn the stillborn bit off
1007 void java_lang_Thread::set_stillborn(oop java_thread) {
1008 java_thread->bool_field_put(_stillborn_offset, true);
1009 }
1010
1011
1012 bool java_lang_Thread::is_alive(oop java_thread) {
1013 JavaThread* thr = java_lang_Thread::thread(java_thread);
1014 return (thr != NULL);
1015 }
1016
1017
1018 bool java_lang_Thread::is_daemon(oop java_thread) {
1019 return java_thread->bool_field(_daemon_offset) != 0;
1020 }
1021
1022
1023 void java_lang_Thread::set_daemon(oop java_thread) {
1024 java_thread->bool_field_put(_daemon_offset, true);
1025 }
1026
1027 oop java_lang_Thread::context_class_loader(oop java_thread) {
1028 return java_thread->obj_field(_contextClassLoader_offset);
1029 }
1030
1031 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1032 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1033 }
1034
1035
1036 jlong java_lang_Thread::stackSize(oop java_thread) {
1037 if (_stackSize_offset > 0) {
1038 return java_thread->long_field(_stackSize_offset);
1039 } else {
1040 return 0;
1041 }
1042 }
1043
1044 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1045 void java_lang_Thread::set_thread_status(oop java_thread,
1046 java_lang_Thread::ThreadStatus status) {
1047 // The threadStatus is only present starting in 1.5
1048 if (_thread_status_offset > 0) {
1049 java_thread->int_field_put(_thread_status_offset, status);
1050 }
1051 }
1052
1053 // Read thread status value from threadStatus field in java.lang.Thread java class.
1054 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1055 assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() ||
1056 JavaThread::current()->thread_state() == _thread_in_vm,
1057 "Java Thread is not running in vm");
1058 // The threadStatus is only present starting in 1.5
1059 if (_thread_status_offset > 0) {
1060 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1061 } else {
1062 // All we can easily figure out is if it is alive, but that is
1063 // enough info for a valid unknown status.
1064 // These aren't restricted to valid set ThreadStatus values, so
1065 // use JVMTI values and cast.
1066 JavaThread* thr = java_lang_Thread::thread(java_thread);
1067 if (thr == NULL) {
1068 // the thread hasn't run yet or is in the process of exiting
1069 return NEW;
1070 }
1071 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1072 }
1073 }
1074
1075
1076 jlong java_lang_Thread::thread_id(oop java_thread) {
1077 // The thread ID field is only present starting in 1.5
1078 if (_tid_offset > 0) {
1079 return java_thread->long_field(_tid_offset);
1080 } else {
1081 return 0;
1082 }
1083 }
1084
1085 oop java_lang_Thread::park_blocker(oop java_thread) {
1086 assert(JDK_Version::current().supports_thread_park_blocker() &&
1087 _park_blocker_offset != 0, "Must support parkBlocker field");
1088
1089 if (_park_blocker_offset > 0) {
1090 return java_thread->obj_field(_park_blocker_offset);
1091 }
1092
1093 return NULL;
1094 }
1095
1096 jlong java_lang_Thread::park_event(oop java_thread) {
1097 if (_park_event_offset > 0) {
1098 return java_thread->long_field(_park_event_offset);
1099 }
1100 return 0;
1101 }
1102
1103 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1104 if (_park_event_offset > 0) {
1105 java_thread->long_field_put(_park_event_offset, ptr);
1106 return true;
1107 }
1108 return false;
1109 }
1110
1111
1112 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1113 assert(_thread_status_offset != 0, "Must have thread status");
1114 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1115 switch (status) {
1116 case NEW : return "NEW";
1117 case RUNNABLE : return "RUNNABLE";
1118 case SLEEPING : return "TIMED_WAITING (sleeping)";
1119 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1120 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1121 case PARKED : return "WAITING (parking)";
1122 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1123 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1124 case TERMINATED : return "TERMINATED";
1125 default : return "UNKNOWN";
1126 };
1127 }
1128 int java_lang_ThreadGroup::_parent_offset = 0;
1129 int java_lang_ThreadGroup::_name_offset = 0;
1130 int java_lang_ThreadGroup::_threads_offset = 0;
1131 int java_lang_ThreadGroup::_groups_offset = 0;
1132 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1133 int java_lang_ThreadGroup::_destroyed_offset = 0;
1134 int java_lang_ThreadGroup::_daemon_offset = 0;
1135 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1136 int java_lang_ThreadGroup::_nthreads_offset = 0;
1137 int java_lang_ThreadGroup::_ngroups_offset = 0;
1138
1139 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1140 assert(java_thread_group->is_oop(), "thread group must be oop");
1141 return java_thread_group->obj_field(_parent_offset);
1142 }
1143
1144 // ("name as oop" accessor is not necessary)
1145
1146 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1147 oop name = java_thread_group->obj_field(_name_offset);
1148 // ThreadGroup.name can be null
1149 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1150 }
1151
1152 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1153 assert(java_thread_group->is_oop(), "thread group must be oop");
1154 return java_thread_group->int_field(_nthreads_offset);
1155 }
1156
1157 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1158 oop threads = java_thread_group->obj_field(_threads_offset);
1159 assert(threads != NULL, "threadgroups should have threads");
1160 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1161 return objArrayOop(threads);
1162 }
1163
1164 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1165 assert(java_thread_group->is_oop(), "thread group must be oop");
1166 return java_thread_group->int_field(_ngroups_offset);
1167 }
1168
1169 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1170 oop groups = java_thread_group->obj_field(_groups_offset);
1171 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1172 return objArrayOop(groups);
1173 }
1174
1175 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1176 assert(java_thread_group->is_oop(), "thread group must be oop");
1177 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1178 }
1179
1180 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1181 assert(java_thread_group->is_oop(), "thread group must be oop");
1182 return java_thread_group->bool_field(_destroyed_offset) != 0;
1183 }
1184
1185 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1186 assert(java_thread_group->is_oop(), "thread group must be oop");
1187 return java_thread_group->bool_field(_daemon_offset) != 0;
1188 }
1189
1190 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1191 assert(java_thread_group->is_oop(), "thread group must be oop");
1192 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1193 }
1194
1195 void java_lang_ThreadGroup::compute_offsets() {
1196 assert(_parent_offset == 0, "offsets should be initialized only once");
1197
1198 Klass* k = SystemDictionary::ThreadGroup_klass();
1199
1200 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1201 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1202 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1203 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1204 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1205 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1206 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1207 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1208 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1209 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1210 }
1211
1212 oop java_lang_Throwable::unassigned_stacktrace() {
1213 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Throwable_klass());
1214 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1215 if (UseCompressedOops) {
1216 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1217 } else {
1218 return oopDesc::load_decode_heap_oop((oop*)addr);
1219 }
1220 }
1221
1222 oop java_lang_Throwable::backtrace(oop throwable) {
1223 return throwable->obj_field_acquire(backtrace_offset);
1224 }
1225
1226
1227 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1228 throwable->release_obj_field_put(backtrace_offset, value);
1229 }
1230
1231
1232 oop java_lang_Throwable::message(oop throwable) {
1233 return throwable->obj_field(detailMessage_offset);
1234 }
1235
1236
1237 oop java_lang_Throwable::message(Handle throwable) {
1238 return throwable->obj_field(detailMessage_offset);
1239 }
1240
1241
1242 // Return Symbol for detailed_message or NULL
1243 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1244 PRESERVE_EXCEPTION_MARK; // Keep original exception
1245 oop detailed_message = java_lang_Throwable::message(throwable);
1246 if (detailed_message != NULL) {
1247 return java_lang_String::as_symbol(detailed_message, THREAD);
1248 }
1249 return NULL;
1250 }
1251
1252 void java_lang_Throwable::set_message(oop throwable, oop value) {
1253 throwable->obj_field_put(detailMessage_offset, value);
1254 }
1255
1256
1257 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1258 throwable->obj_field_put(stackTrace_offset, st_element_array);
1259 }
1260
1261 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1262 set_stacktrace(throwable, NULL);
1263 }
1264
1265
1266 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1267 ResourceMark rm;
1268 Klass* k = throwable->klass();
1269 assert(k != NULL, "just checking");
1270 st->print("%s", InstanceKlass::cast(k)->external_name());
1271 oop msg = message(throwable);
1272 if (msg != NULL) {
1273 st->print(": %s", java_lang_String::as_utf8_string(msg));
1274 }
1275 }
1276
1277
1278 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1279 ResourceMark rm;
1280 Klass* k = throwable->klass();
1281 assert(k != NULL, "just checking");
1282 st->print("%s", InstanceKlass::cast(k)->external_name());
1283 oop msg = message(throwable);
1284 if (msg != NULL) {
1285 st->print(": %s", java_lang_String::as_utf8_string(msg));
1286 }
1287 }
1288
1289 // After this many redefines, the stack trace is unreliable.
1290 const int MAX_VERSION = USHRT_MAX;
1291
1292 // Helper backtrace functions to store bci|version together.
1293 static inline int merge_bci_and_version(int bci, int version) {
1294 // only store u2 for version, checking for overflow.
1295 if (version > USHRT_MAX || version < 0) version = MAX_VERSION;
1296 assert((jushort)bci == bci, "bci should be short");
1297 return build_int_from_shorts(version, bci);
1298 }
1299
1300 static inline int bci_at(unsigned int merged) {
1301 return extract_high_short_from_int(merged);
1302 }
1303 static inline int version_at(unsigned int merged) {
1304 return extract_low_short_from_int(merged);
1305 }
1306
1307 static inline bool version_matches(Method* method, int version) {
1308 return (method->constants()->version() == version && version < MAX_VERSION);
1309 }
1310
1311 static inline int get_line_number(Method* method, int bci) {
1312 int line_number = 0;
1313 if (method->is_native()) {
1314 // Negative value different from -1 below, enabling Java code in
1315 // class java.lang.StackTraceElement to distinguish "native" from
1316 // "no LineNumberTable". JDK tests for -2.
1317 line_number = -2;
1318 } else {
1319 // Returns -1 if no LineNumberTable, and otherwise actual line number
1320 line_number = method->line_number_from_bci(bci);
1321 if (line_number == -1 && ShowHiddenFrames) {
1322 line_number = bci + 1000000;
1323 }
1324 }
1325 return line_number;
1326 }
1327
1328 // This class provides a simple wrapper over the internal structure of
1329 // exception backtrace to insulate users of the backtrace from needing
1330 // to know what it looks like.
1331 class BacktraceBuilder: public StackObj {
1332 private:
1333 Handle _backtrace;
1334 objArrayOop _head;
1335 typeArrayOop _methods;
1336 typeArrayOop _bcis;
1337 objArrayOop _mirrors;
1338 int _index;
1339 No_Safepoint_Verifier _nsv;
1340
1341 public:
1342
1343 enum {
1344 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1345 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1346 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1347 trace_next_offset = java_lang_Throwable::trace_next_offset,
1348 trace_size = java_lang_Throwable::trace_size,
1349 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1350 };
1351
1352 // get info out of chunks
1353 static typeArrayOop get_methods(objArrayHandle chunk) {
1354 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1355 assert(methods != NULL, "method array should be initialized in backtrace");
1356 return methods;
1357 }
1358 static typeArrayOop get_bcis(objArrayHandle chunk) {
1359 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1360 assert(bcis != NULL, "bci array should be initialized in backtrace");
1361 return bcis;
1362 }
1363 static objArrayOop get_mirrors(objArrayHandle chunk) {
1364 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1365 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1366 return mirrors;
1367 }
1368
1369 // constructor for new backtrace
1370 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL) {
1371 expand(CHECK);
1372 _backtrace = _head;
1373 _index = 0;
1374 }
1375
1376 BacktraceBuilder(objArrayHandle backtrace) {
1377 _methods = get_methods(backtrace);
1378 _bcis = get_bcis(backtrace);
1379 _mirrors = get_mirrors(backtrace);
1380 assert(_methods->length() == _bcis->length() &&
1381 _methods->length() == _mirrors->length(),
1382 "method and source information arrays should match");
1383
1384 // head is the preallocated backtrace
1385 _backtrace = _head = backtrace();
1386 _index = 0;
1387 }
1388
1389 void expand(TRAPS) {
1390 objArrayHandle old_head(THREAD, _head);
1391 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1392
1393 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1394 objArrayHandle new_head(THREAD, head);
1395
1396 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1397 typeArrayHandle new_methods(THREAD, methods);
1398
1399 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1400 typeArrayHandle new_bcis(THREAD, bcis);
1401
1402 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1403 objArrayHandle new_mirrors(THREAD, mirrors);
1404
1405 if (!old_head.is_null()) {
1406 old_head->obj_at_put(trace_next_offset, new_head());
1407 }
1408 new_head->obj_at_put(trace_methods_offset, new_methods());
1409 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1410 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1411
1412 _head = new_head();
1413 _methods = new_methods();
1414 _bcis = new_bcis();
1415 _mirrors = new_mirrors();
1416 _index = 0;
1417 }
1418
1419 oop backtrace() {
1420 return _backtrace();
1421 }
1422
1423 inline void push(Method* method, int bci, TRAPS) {
1424 // Smear the -1 bci to 0 since the array only holds unsigned
1425 // shorts. The later line number lookup would just smear the -1
1426 // to a 0 even if it could be recorded.
1427 if (bci == SynchronizationEntryBCI) bci = 0;
1428
1429 if (_index >= trace_chunk_size) {
1430 methodHandle mhandle(THREAD, method);
1431 expand(CHECK);
1432 method = mhandle();
1433 }
1434
1435 _methods->short_at_put(_index, method->method_idnum());
1436 _bcis->int_at_put(_index, merge_bci_and_version(bci, method->constants()->version()));
1437
1438 // We need to save the mirrors in the backtrace to keep the class
1439 // from being unloaded while we still have this stack trace.
1440 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1441 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1442 _index++;
1443 }
1444
1445 };
1446
1447 // Print stack trace element to resource allocated buffer
1448 char* java_lang_Throwable::print_stack_element_to_buffer(Handle mirror,
1449 int method_id, int version, int bci) {
1450
1451 // Get strings and string lengths
1452 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1453 const char* klass_name = holder->external_name();
1454 int buf_len = (int)strlen(klass_name);
1455
1456 // The method id may point to an obsolete method, can't get more stack information
1457 Method* method = holder->method_with_idnum(method_id);
1458 if (method == NULL) {
1459 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1460 // This is what the java code prints in this case - added Redefined
1461 sprintf(buf, "\tat %s.null (Redefined)", klass_name);
1462 return buf;
1463 }
1464
1465 char* method_name = method->name()->as_C_string();
1466 buf_len += (int)strlen(method_name);
1467
1468 char* source_file_name = NULL;
1469 if (version_matches(method, version)) {
1470 Symbol* source = holder->source_file_name();
1471 if (source != NULL) {
1472 source_file_name = source->as_C_string();
1473 buf_len += (int)strlen(source_file_name);
1474 }
1475 }
1476
1477 // Allocate temporary buffer with extra space for formatting and line number
1478 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1479
1480 // Print stack trace line in buffer
1481 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1482
1483 if (!version_matches(method, version)) {
1484 strcat(buf, "(Redefined)");
1485 } else {
1486 int line_number = get_line_number(method, bci);
1487 if (line_number == -2) {
1488 strcat(buf, "(Native Method)");
1489 } else {
1490 if (source_file_name != NULL && (line_number != -1)) {
1491 // Sourcename and linenumber
1492 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1493 } else if (source_file_name != NULL) {
1494 // Just sourcename
1495 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1496 } else {
1497 // Neither sourcename nor linenumber
1498 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1499 }
1500 nmethod* nm = method->code();
1501 if (WizardMode && nm != NULL) {
1502 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1503 }
1504 }
1505 }
1506
1507 return buf;
1508 }
1509
1510 void java_lang_Throwable::print_stack_element(outputStream *st, Handle mirror,
1511 int method_id, int version, int bci) {
1512 ResourceMark rm;
1513 char* buf = print_stack_element_to_buffer(mirror, method_id, version, bci);
1514 st->print_cr("%s", buf);
1515 }
1516
1517 void java_lang_Throwable::print_stack_element(outputStream *st, methodHandle method, int bci) {
1518 Handle mirror = method->method_holder()->java_mirror();
1519 int method_id = method->method_idnum();
1520 int version = method->constants()->version();
1521 print_stack_element(st, mirror, method_id, version, bci);
1522 }
1523
1524 const char* java_lang_Throwable::no_stack_trace_message() {
1525 return "\t<<no stack trace available>>";
1526 }
1527
1528
1529 // Currently used only for exceptions occurring during startup
1530 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1531 Thread *THREAD = Thread::current();
1532 Handle h_throwable(THREAD, throwable);
1533 while (h_throwable.not_null()) {
1534 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1535 if (result.is_null()) {
1536 st->print_cr("%s", no_stack_trace_message());
1537 return;
1538 }
1539
1540 while (result.not_null()) {
1541
1542 // Get method id, bci, version and mirror from chunk
1543 typeArrayHandle methods (THREAD, BacktraceBuilder::get_methods(result));
1544 typeArrayHandle bcis (THREAD, BacktraceBuilder::get_bcis(result));
1545 objArrayHandle mirrors (THREAD, BacktraceBuilder::get_mirrors(result));
1546
1547 int length = methods()->length();
1548 for (int index = 0; index < length; index++) {
1549 Handle mirror(THREAD, mirrors->obj_at(index));
1550 // NULL mirror means end of stack trace
1551 if (mirror.is_null()) goto handle_cause;
1552 int method = methods->short_at(index);
1553 int version = version_at(bcis->int_at(index));
1554 int bci = bci_at(bcis->int_at(index));
1555 print_stack_element(st, mirror, method, version, bci);
1556 }
1557 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1558 }
1559 handle_cause:
1560 {
1561 EXCEPTION_MARK;
1562 JavaValue cause(T_OBJECT);
1563 JavaCalls::call_virtual(&cause,
1564 h_throwable,
1565 KlassHandle(THREAD, h_throwable->klass()),
1566 vmSymbols::getCause_name(),
1567 vmSymbols::void_throwable_signature(),
1568 THREAD);
1569 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1570 if (HAS_PENDING_EXCEPTION) {
1571 CLEAR_PENDING_EXCEPTION;
1572 h_throwable = Handle();
1573 } else {
1574 h_throwable = Handle(THREAD, (oop) cause.get_jobject());
1575 if (h_throwable.not_null()) {
1576 st->print("Caused by: ");
1577 print(h_throwable, st);
1578 st->cr();
1579 }
1580 }
1581 }
1582 }
1583 }
1584
1585 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) {
1586 if (!StackTraceInThrowable) return;
1587 ResourceMark rm(THREAD);
1588
1589 // Start out by clearing the backtrace for this object, in case the VM
1590 // runs out of memory while allocating the stack trace
1591 set_backtrace(throwable(), NULL);
1592 // Clear lazily constructed Java level stacktrace if refilling occurs
1593 // This is unnecessary in 1.7+ but harmless
1594 clear_stacktrace(throwable());
1595
1596 int max_depth = MaxJavaStackTraceDepth;
1597 JavaThread* thread = (JavaThread*)THREAD;
1598 BacktraceBuilder bt(CHECK);
1599
1600 // If there is no Java frame just return the method that was being called
1601 // with bci 0
1602 if (!thread->has_last_Java_frame()) {
1603 if (max_depth >= 1 && method() != NULL) {
1604 bt.push(method(), 0, CHECK);
1605 set_backtrace(throwable(), bt.backtrace());
1606 }
1607 return;
1608 }
1609
1610 // Instead of using vframe directly, this version of fill_in_stack_trace
1611 // basically handles everything by hand. This significantly improved the
1612 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1613 // See bug 6333838 for more details.
1614 // The "ASSERT" here is to verify this method generates the exactly same stack
1615 // trace as utilizing vframe.
1616 #ifdef ASSERT
1617 vframeStream st(thread);
1618 methodHandle st_method(THREAD, st.method());
1619 #endif
1620 int total_count = 0;
1621 RegisterMap map(thread, false);
1622 int decode_offset = 0;
1623 nmethod* nm = NULL;
1624 bool skip_fillInStackTrace_check = false;
1625 bool skip_throwableInit_check = false;
1626 bool skip_hidden = !ShowHiddenFrames;
1627
1628 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1629 Method* method = NULL;
1630 int bci = 0;
1631
1632 // Compiled java method case.
1633 if (decode_offset != 0) {
1634 DebugInfoReadStream stream(nm, decode_offset);
1635 decode_offset = stream.read_int();
1636 method = (Method*)nm->metadata_at(stream.read_int());
1637 bci = stream.read_bci();
1638 } else {
1639 if (fr.is_first_frame()) break;
1640 address pc = fr.pc();
1641 if (fr.is_interpreted_frame()) {
1642 intptr_t bcx = fr.interpreter_frame_bcx();
1643 method = fr.interpreter_frame_method();
1644 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx);
1645 fr = fr.sender(&map);
1646 } else {
1647 CodeBlob* cb = fr.cb();
1648 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1649 // but non nmethod
1650 fr = fr.sender(&map);
1651 if (cb == NULL || !cb->is_nmethod()) {
1652 continue;
1653 }
1654 nm = (nmethod*)cb;
1655 if (nm->method()->is_native()) {
1656 method = nm->method();
1657 bci = 0;
1658 } else {
1659 PcDesc* pd = nm->pc_desc_at(pc);
1660 decode_offset = pd->scope_decode_offset();
1661 // if decode_offset is not equal to 0, it will execute the
1662 // "compiled java method case" at the beginning of the loop.
1663 continue;
1664 }
1665 }
1666 }
1667 #ifdef ASSERT
1668 assert(st_method() == method && st.bci() == bci,
1669 "Wrong stack trace");
1670 st.next();
1671 // vframeStream::method isn't GC-safe so store off a copy
1672 // of the Method* in case we GC.
1673 if (!st.at_end()) {
1674 st_method = st.method();
1675 }
1676 #endif
1677
1678 // the format of the stacktrace will be:
1679 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1680 // - 0 or more <init> methods for the exception class (skipped)
1681 // - rest of the stack
1682
1683 if (!skip_fillInStackTrace_check) {
1684 if ((method->name() == vmSymbols::fillInStackTrace_name() ||
1685 method->name() == vmSymbols::fillInStackTrace0_name()) &&
1686 throwable->is_a(method->method_holder())) {
1687 continue;
1688 }
1689 else {
1690 skip_fillInStackTrace_check = true; // gone past them all
1691 }
1692 }
1693 if (!skip_throwableInit_check) {
1694 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1695
1696 // skip <init> methods of the exception class and superclasses
1697 // This is simlar to classic VM.
1698 if (method->name() == vmSymbols::object_initializer_name() &&
1699 throwable->is_a(method->method_holder())) {
1700 continue;
1701 } else {
1702 // there are none or we've seen them all - either way stop checking
1703 skip_throwableInit_check = true;
1704 }
1705 }
1706 if (method->is_hidden()) {
1707 if (skip_hidden) continue;
1708 }
1709 bt.push(method, bci, CHECK);
1710 total_count++;
1711 }
1712
1713 // Put completed stack trace into throwable object
1714 set_backtrace(throwable(), bt.backtrace());
1715 }
1716
1717 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) {
1718 // No-op if stack trace is disabled
1719 if (!StackTraceInThrowable) {
1720 return;
1721 }
1722
1723 // Disable stack traces for some preallocated out of memory errors
1724 if (!Universe::should_fill_in_stack_trace(throwable)) {
1725 return;
1726 }
1727
1728 PRESERVE_EXCEPTION_MARK;
1729
1730 JavaThread* thread = JavaThread::active();
1731 fill_in_stack_trace(throwable, method, thread);
1732 // ignore exceptions thrown during stack trace filling
1733 CLEAR_PENDING_EXCEPTION;
1734 }
1735
1736 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1737 // Allocate stack trace - backtrace is created but not filled in
1738
1739 // No-op if stack trace is disabled
1740 if (!StackTraceInThrowable) return;
1741 BacktraceBuilder bt(CHECK); // creates a backtrace
1742 set_backtrace(throwable(), bt.backtrace());
1743 }
1744
1745
1746 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1747 // Fill in stack trace into preallocated backtrace (no GC)
1748
1749 // No-op if stack trace is disabled
1750 if (!StackTraceInThrowable) return;
1751
1752 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1753
1754 JavaThread* THREAD = JavaThread::current();
1755
1756 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
1757 assert(backtrace.not_null(), "backtrace should have been preallocated");
1758
1759 ResourceMark rm(THREAD);
1760 vframeStream st(THREAD);
1761
1762 BacktraceBuilder bt(backtrace);
1763
1764 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1765 // methods as preallocated errors aren't created by "java" code.
1766
1767 // fill in as much stack trace as possible
1768 typeArrayOop methods = BacktraceBuilder::get_methods(backtrace);
1769 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1770 int chunk_count = 0;
1771
1772 for (;!st.at_end(); st.next()) {
1773 bt.push(st.method(), st.bci(), CHECK);
1774 chunk_count++;
1775
1776 // Bail-out for deep stacks
1777 if (chunk_count >= max_chunks) break;
1778 }
1779
1780 // We support the Throwable immutability protocol defined for Java 7.
1781 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1782 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1783 }
1784
1785
1786 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1787 if (throwable == NULL) {
1788 THROW_0(vmSymbols::java_lang_NullPointerException());
1789 }
1790 objArrayOop chunk = objArrayOop(backtrace(throwable));
1791 int depth = 0;
1792 if (chunk != NULL) {
1793 // Iterate over chunks and count full ones
1794 while (true) {
1795 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1796 if (next == NULL) break;
1797 depth += trace_chunk_size;
1798 chunk = next;
1799 }
1800 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1801 // Count element in remaining partial chunk. NULL value for mirror
1802 // marks the end of the stack trace elements that are saved.
1803 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1804 assert(mirrors != NULL, "sanity check");
1805 for (int i = 0; i < mirrors->length(); i++) {
1806 if (mirrors->obj_at(i) == NULL) break;
1807 depth++;
1808 }
1809 }
1810 return depth;
1811 }
1812
1813
1814 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1815 if (throwable == NULL) {
1816 THROW_0(vmSymbols::java_lang_NullPointerException());
1817 }
1818 if (index < 0) {
1819 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1820 }
1821 // Compute how many chunks to skip and index into actual chunk
1822 objArrayOop chunk = objArrayOop(backtrace(throwable));
1823 int skip_chunks = index / trace_chunk_size;
1824 int chunk_index = index % trace_chunk_size;
1825 while (chunk != NULL && skip_chunks > 0) {
1826 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1827 skip_chunks--;
1828 }
1829 if (chunk == NULL) {
1830 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1831 }
1832 // Get method id, bci, version and mirror from chunk
1833 typeArrayOop methods = BacktraceBuilder::get_methods(chunk);
1834 typeArrayOop bcis = BacktraceBuilder::get_bcis(chunk);
1835 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1836
1837 assert(methods != NULL && bcis != NULL && mirrors != NULL, "sanity check");
1838
1839 int method = methods->short_at(chunk_index);
1840 int version = version_at(bcis->int_at(chunk_index));
1841 int bci = bci_at(bcis->int_at(chunk_index));
1842 Handle mirror(THREAD, mirrors->obj_at(chunk_index));
1843
1844 // Chunk can be partial full
1845 if (mirror.is_null()) {
1846 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1847 }
1848
1849 oop element = java_lang_StackTraceElement::create(mirror, method, version, bci, CHECK_0);
1850 return element;
1851 }
1852
1853 oop java_lang_StackTraceElement::create(Handle mirror, int method_id,
1854 int version, int bci, TRAPS) {
1855 // Allocate java.lang.StackTraceElement instance
1856 Klass* k = SystemDictionary::StackTraceElement_klass();
1857 assert(k != NULL, "must be loaded in 1.4+");
1858 instanceKlassHandle ik (THREAD, k);
1859 if (ik->should_be_initialized()) {
1860 ik->initialize(CHECK_0);
1861 }
1862
1863 Handle element = ik->allocate_instance_handle(CHECK_0);
1864 // Fill in class name
1865 ResourceMark rm(THREAD);
1866 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1867 const char* str = holder->external_name();
1868 oop classname = StringTable::intern((char*) str, CHECK_0);
1869 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1870
1871 Method* method = holder->method_with_idnum(method_id);
1872 // Method on stack may be obsolete because it was redefined so cannot be
1873 // found by idnum.
1874 if (method == NULL) {
1875 // leave name and fileName null
1876 java_lang_StackTraceElement::set_lineNumber(element(), -1);
1877 return element();
1878 }
1879
1880 // Fill in method name
1881 oop methodname = StringTable::intern(method->name(), CHECK_0);
1882 java_lang_StackTraceElement::set_methodName(element(), methodname);
1883
1884 if (!version_matches(method, version)) {
1885 // The method was redefined, accurate line number information isn't available
1886 java_lang_StackTraceElement::set_fileName(element(), NULL);
1887 java_lang_StackTraceElement::set_lineNumber(element(), -1);
1888 } else {
1889 // Fill in source file name and line number.
1890 Symbol* source = holder->source_file_name();
1891 if (ShowHiddenFrames && source == NULL)
1892 source = vmSymbols::unknown_class_name();
1893 oop filename = StringTable::intern(source, CHECK_0);
1894 java_lang_StackTraceElement::set_fileName(element(), filename);
1895
1896 int line_number = get_line_number(method, bci);
1897 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1898 }
1899 return element();
1900 }
1901
1902 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) {
1903 Handle mirror (THREAD, method->method_holder()->java_mirror());
1904 int method_id = method->method_idnum();
1905 return create(mirror, method_id, method->constants()->version(), bci, THREAD);
1906 }
1907
1908 void java_lang_reflect_AccessibleObject::compute_offsets() {
1909 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1910 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1911 }
1912
1913 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1914 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1915 return (jboolean) reflect->bool_field(override_offset);
1916 }
1917
1918 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1919 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1920 reflect->bool_field_put(override_offset, (int) value);
1921 }
1922
1923 void java_lang_reflect_Method::compute_offsets() {
1924 Klass* k = SystemDictionary::reflect_Method_klass();
1925 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1926 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1927 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1928 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1929 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1930 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1931 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1932 // The generic signature and annotations fields are only present in 1.5
1933 signature_offset = -1;
1934 annotations_offset = -1;
1935 parameter_annotations_offset = -1;
1936 annotation_default_offset = -1;
1937 type_annotations_offset = -1;
1938 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1939 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1940 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1941 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1942 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
1943 }
1944
1945 Handle java_lang_reflect_Method::create(TRAPS) {
1946 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1947 Klass* klass = SystemDictionary::reflect_Method_klass();
1948 // This class is eagerly initialized during VM initialization, since we keep a refence
1949 // to one of the methods
1950 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
1951 return InstanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH);
1952 }
1953
1954 oop java_lang_reflect_Method::clazz(oop reflect) {
1955 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1956 return reflect->obj_field(clazz_offset);
1957 }
1958
1959 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
1960 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1961 reflect->obj_field_put(clazz_offset, value);
1962 }
1963
1964 int java_lang_reflect_Method::slot(oop reflect) {
1965 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1966 return reflect->int_field(slot_offset);
1967 }
1968
1969 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
1970 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1971 reflect->int_field_put(slot_offset, value);
1972 }
1973
1974 oop java_lang_reflect_Method::name(oop method) {
1975 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1976 return method->obj_field(name_offset);
1977 }
1978
1979 void java_lang_reflect_Method::set_name(oop method, oop value) {
1980 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1981 method->obj_field_put(name_offset, value);
1982 }
1983
1984 oop java_lang_reflect_Method::return_type(oop method) {
1985 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1986 return method->obj_field(returnType_offset);
1987 }
1988
1989 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
1990 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1991 method->obj_field_put(returnType_offset, value);
1992 }
1993
1994 oop java_lang_reflect_Method::parameter_types(oop method) {
1995 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1996 return method->obj_field(parameterTypes_offset);
1997 }
1998
1999 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2000 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2001 method->obj_field_put(parameterTypes_offset, value);
2002 }
2003
2004 oop java_lang_reflect_Method::exception_types(oop method) {
2005 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2006 return method->obj_field(exceptionTypes_offset);
2007 }
2008
2009 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2010 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2011 method->obj_field_put(exceptionTypes_offset, value);
2012 }
2013
2014 int java_lang_reflect_Method::modifiers(oop method) {
2015 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2016 return method->int_field(modifiers_offset);
2017 }
2018
2019 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2020 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2021 method->int_field_put(modifiers_offset, value);
2022 }
2023
2024 bool java_lang_reflect_Method::has_signature_field() {
2025 return (signature_offset >= 0);
2026 }
2027
2028 oop java_lang_reflect_Method::signature(oop method) {
2029 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2030 assert(has_signature_field(), "signature field must be present");
2031 return method->obj_field(signature_offset);
2032 }
2033
2034 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2035 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2036 assert(has_signature_field(), "signature field must be present");
2037 method->obj_field_put(signature_offset, value);
2038 }
2039
2040 bool java_lang_reflect_Method::has_annotations_field() {
2041 return (annotations_offset >= 0);
2042 }
2043
2044 oop java_lang_reflect_Method::annotations(oop method) {
2045 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2046 assert(has_annotations_field(), "annotations field must be present");
2047 return method->obj_field(annotations_offset);
2048 }
2049
2050 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2051 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2052 assert(has_annotations_field(), "annotations field must be present");
2053 method->obj_field_put(annotations_offset, value);
2054 }
2055
2056 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2057 return (parameter_annotations_offset >= 0);
2058 }
2059
2060 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2061 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2062 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2063 return method->obj_field(parameter_annotations_offset);
2064 }
2065
2066 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2067 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2068 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2069 method->obj_field_put(parameter_annotations_offset, value);
2070 }
2071
2072 bool java_lang_reflect_Method::has_annotation_default_field() {
2073 return (annotation_default_offset >= 0);
2074 }
2075
2076 oop java_lang_reflect_Method::annotation_default(oop method) {
2077 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2078 assert(has_annotation_default_field(), "annotation default field must be present");
2079 return method->obj_field(annotation_default_offset);
2080 }
2081
2082 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2083 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2084 assert(has_annotation_default_field(), "annotation default field must be present");
2085 method->obj_field_put(annotation_default_offset, value);
2086 }
2087
2088 bool java_lang_reflect_Method::has_type_annotations_field() {
2089 return (type_annotations_offset >= 0);
2090 }
2091
2092 oop java_lang_reflect_Method::type_annotations(oop method) {
2093 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2094 assert(has_type_annotations_field(), "type_annotations field must be present");
2095 return method->obj_field(type_annotations_offset);
2096 }
2097
2098 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2099 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2100 assert(has_type_annotations_field(), "type_annotations field must be present");
2101 method->obj_field_put(type_annotations_offset, value);
2102 }
2103
2104 void java_lang_reflect_Constructor::compute_offsets() {
2105 Klass* k = SystemDictionary::reflect_Constructor_klass();
2106 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2107 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2108 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2109 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2110 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2111 // The generic signature and annotations fields are only present in 1.5
2112 signature_offset = -1;
2113 annotations_offset = -1;
2114 parameter_annotations_offset = -1;
2115 type_annotations_offset = -1;
2116 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2117 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2118 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2119 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2120 }
2121
2122 Handle java_lang_reflect_Constructor::create(TRAPS) {
2123 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2124 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2125 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2126 instanceKlassHandle klass (THREAD, k);
2127 // Ensure it is initialized
2128 klass->initialize(CHECK_NH);
2129 return klass->allocate_instance_handle(CHECK_NH);
2130 }
2131
2132 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2133 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2134 return reflect->obj_field(clazz_offset);
2135 }
2136
2137 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2138 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2139 reflect->obj_field_put(clazz_offset, value);
2140 }
2141
2142 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2143 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2144 return constructor->obj_field(parameterTypes_offset);
2145 }
2146
2147 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2148 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2149 constructor->obj_field_put(parameterTypes_offset, value);
2150 }
2151
2152 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2153 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2154 return constructor->obj_field(exceptionTypes_offset);
2155 }
2156
2157 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2158 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2159 constructor->obj_field_put(exceptionTypes_offset, value);
2160 }
2161
2162 int java_lang_reflect_Constructor::slot(oop reflect) {
2163 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2164 return reflect->int_field(slot_offset);
2165 }
2166
2167 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2168 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2169 reflect->int_field_put(slot_offset, value);
2170 }
2171
2172 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2173 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2174 return constructor->int_field(modifiers_offset);
2175 }
2176
2177 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2178 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2179 constructor->int_field_put(modifiers_offset, value);
2180 }
2181
2182 bool java_lang_reflect_Constructor::has_signature_field() {
2183 return (signature_offset >= 0);
2184 }
2185
2186 oop java_lang_reflect_Constructor::signature(oop constructor) {
2187 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2188 assert(has_signature_field(), "signature field must be present");
2189 return constructor->obj_field(signature_offset);
2190 }
2191
2192 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2193 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2194 assert(has_signature_field(), "signature field must be present");
2195 constructor->obj_field_put(signature_offset, value);
2196 }
2197
2198 bool java_lang_reflect_Constructor::has_annotations_field() {
2199 return (annotations_offset >= 0);
2200 }
2201
2202 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2203 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2204 assert(has_annotations_field(), "annotations field must be present");
2205 return constructor->obj_field(annotations_offset);
2206 }
2207
2208 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2209 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2210 assert(has_annotations_field(), "annotations field must be present");
2211 constructor->obj_field_put(annotations_offset, value);
2212 }
2213
2214 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2215 return (parameter_annotations_offset >= 0);
2216 }
2217
2218 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2219 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2220 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2221 return method->obj_field(parameter_annotations_offset);
2222 }
2223
2224 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2225 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2226 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2227 method->obj_field_put(parameter_annotations_offset, value);
2228 }
2229
2230 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2231 return (type_annotations_offset >= 0);
2232 }
2233
2234 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2235 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2236 assert(has_type_annotations_field(), "type_annotations field must be present");
2237 return constructor->obj_field(type_annotations_offset);
2238 }
2239
2240 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2241 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2242 assert(has_type_annotations_field(), "type_annotations field must be present");
2243 constructor->obj_field_put(type_annotations_offset, value);
2244 }
2245
2246 void java_lang_reflect_Field::compute_offsets() {
2247 Klass* k = SystemDictionary::reflect_Field_klass();
2248 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2249 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2250 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2251 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2252 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2253 // The generic signature and annotations fields are only present in 1.5
2254 signature_offset = -1;
2255 annotations_offset = -1;
2256 type_annotations_offset = -1;
2257 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2258 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2259 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2260 }
2261
2262 Handle java_lang_reflect_Field::create(TRAPS) {
2263 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2264 Symbol* name = vmSymbols::java_lang_reflect_Field();
2265 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2266 instanceKlassHandle klass (THREAD, k);
2267 // Ensure it is initialized
2268 klass->initialize(CHECK_NH);
2269 return klass->allocate_instance_handle(CHECK_NH);
2270 }
2271
2272 oop java_lang_reflect_Field::clazz(oop reflect) {
2273 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2274 return reflect->obj_field(clazz_offset);
2275 }
2276
2277 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2278 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2279 reflect->obj_field_put(clazz_offset, value);
2280 }
2281
2282 oop java_lang_reflect_Field::name(oop field) {
2283 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2284 return field->obj_field(name_offset);
2285 }
2286
2287 void java_lang_reflect_Field::set_name(oop field, oop value) {
2288 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2289 field->obj_field_put(name_offset, value);
2290 }
2291
2292 oop java_lang_reflect_Field::type(oop field) {
2293 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2294 return field->obj_field(type_offset);
2295 }
2296
2297 void java_lang_reflect_Field::set_type(oop field, oop value) {
2298 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2299 field->obj_field_put(type_offset, value);
2300 }
2301
2302 int java_lang_reflect_Field::slot(oop reflect) {
2303 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2304 return reflect->int_field(slot_offset);
2305 }
2306
2307 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2308 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2309 reflect->int_field_put(slot_offset, value);
2310 }
2311
2312 int java_lang_reflect_Field::modifiers(oop field) {
2313 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2314 return field->int_field(modifiers_offset);
2315 }
2316
2317 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2318 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2319 field->int_field_put(modifiers_offset, value);
2320 }
2321
2322 bool java_lang_reflect_Field::has_signature_field() {
2323 return (signature_offset >= 0);
2324 }
2325
2326 oop java_lang_reflect_Field::signature(oop field) {
2327 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2328 assert(has_signature_field(), "signature field must be present");
2329 return field->obj_field(signature_offset);
2330 }
2331
2332 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2333 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2334 assert(has_signature_field(), "signature field must be present");
2335 field->obj_field_put(signature_offset, value);
2336 }
2337
2338 bool java_lang_reflect_Field::has_annotations_field() {
2339 return (annotations_offset >= 0);
2340 }
2341
2342 oop java_lang_reflect_Field::annotations(oop field) {
2343 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2344 assert(has_annotations_field(), "annotations field must be present");
2345 return field->obj_field(annotations_offset);
2346 }
2347
2348 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2349 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2350 assert(has_annotations_field(), "annotations field must be present");
2351 field->obj_field_put(annotations_offset, value);
2352 }
2353
2354 bool java_lang_reflect_Field::has_type_annotations_field() {
2355 return (type_annotations_offset >= 0);
2356 }
2357
2358 oop java_lang_reflect_Field::type_annotations(oop field) {
2359 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2360 assert(has_type_annotations_field(), "type_annotations field must be present");
2361 return field->obj_field(type_annotations_offset);
2362 }
2363
2364 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2365 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2366 assert(has_type_annotations_field(), "type_annotations field must be present");
2367 field->obj_field_put(type_annotations_offset, value);
2368 }
2369
2370 void sun_reflect_ConstantPool::compute_offsets() {
2371 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2372 // This null test can be removed post beta
2373 if (k != NULL) {
2374 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2375 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2376 }
2377 }
2378
2379 void java_lang_reflect_Parameter::compute_offsets() {
2380 Klass* k = SystemDictionary::reflect_Parameter_klass();
2381 if(NULL != k) {
2382 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2383 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2384 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2385 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2386 }
2387 }
2388
2389 Handle java_lang_reflect_Parameter::create(TRAPS) {
2390 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2391 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2392 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2393 instanceKlassHandle klass (THREAD, k);
2394 // Ensure it is initialized
2395 klass->initialize(CHECK_NH);
2396 return klass->allocate_instance_handle(CHECK_NH);
2397 }
2398
2399 oop java_lang_reflect_Parameter::name(oop param) {
2400 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2401 return param->obj_field(name_offset);
2402 }
2403
2404 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2405 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2406 param->obj_field_put(name_offset, value);
2407 }
2408
2409 int java_lang_reflect_Parameter::modifiers(oop param) {
2410 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2411 return param->int_field(modifiers_offset);
2412 }
2413
2414 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2415 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2416 param->int_field_put(modifiers_offset, value);
2417 }
2418
2419 int java_lang_reflect_Parameter::index(oop param) {
2420 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2421 return param->int_field(index_offset);
2422 }
2423
2424 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2425 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2426 param->int_field_put(index_offset, value);
2427 }
2428
2429 oop java_lang_reflect_Parameter::executable(oop param) {
2430 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2431 return param->obj_field(executable_offset);
2432 }
2433
2434 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2435 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2436 param->obj_field_put(executable_offset, value);
2437 }
2438
2439
2440 Handle sun_reflect_ConstantPool::create(TRAPS) {
2441 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2442 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2443 instanceKlassHandle klass (THREAD, k);
2444 // Ensure it is initialized
2445 klass->initialize(CHECK_NH);
2446 return klass->allocate_instance_handle(CHECK_NH);
2447 }
2448
2449
2450 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2451 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2452 oop mirror = value->pool_holder()->java_mirror();
2453 // Save the mirror to get back the constant pool.
2454 reflect->obj_field_put(_oop_offset, mirror);
2455 }
2456
2457 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2458 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2459
2460 oop mirror = reflect->obj_field(_oop_offset);
2461 Klass* k = java_lang_Class::as_Klass(mirror);
2462 assert(k->oop_is_instance(), "Must be");
2463
2464 // Get the constant pool back from the klass. Since class redefinition
2465 // merges the new constant pool into the old, this is essentially the
2466 // same constant pool as the original. If constant pool merging is
2467 // no longer done in the future, this will have to change to save
2468 // the original.
2469 return InstanceKlass::cast(k)->constants();
2470 }
2471
2472 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2473 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2474 // This null test can be removed post beta
2475 if (k != NULL) {
2476 compute_offset(_base_offset, k,
2477 vmSymbols::base_name(), vmSymbols::object_signature());
2478 }
2479 }
2480
2481 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2482 Klass* k = SystemDictionary::box_klass(type);
2483 if (k == NULL) return NULL;
2484 instanceKlassHandle h (THREAD, k);
2485 if (!h->is_initialized()) h->initialize(CHECK_0);
2486 return h->allocate_instance(THREAD);
2487 }
2488
2489
2490 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2491 oop box = initialize_and_allocate(type, CHECK_0);
2492 if (box == NULL) return NULL;
2493 switch (type) {
2494 case T_BOOLEAN:
2495 box->bool_field_put(value_offset, value->z);
2496 break;
2497 case T_CHAR:
2498 box->char_field_put(value_offset, value->c);
2499 break;
2500 case T_FLOAT:
2501 box->float_field_put(value_offset, value->f);
2502 break;
2503 case T_DOUBLE:
2504 box->double_field_put(long_value_offset, value->d);
2505 break;
2506 case T_BYTE:
2507 box->byte_field_put(value_offset, value->b);
2508 break;
2509 case T_SHORT:
2510 box->short_field_put(value_offset, value->s);
2511 break;
2512 case T_INT:
2513 box->int_field_put(value_offset, value->i);
2514 break;
2515 case T_LONG:
2516 box->long_field_put(long_value_offset, value->j);
2517 break;
2518 default:
2519 return NULL;
2520 }
2521 return box;
2522 }
2523
2524
2525 BasicType java_lang_boxing_object::basic_type(oop box) {
2526 if (box == NULL) return T_ILLEGAL;
2527 BasicType type = SystemDictionary::box_klass_type(box->klass());
2528 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2529 return T_ILLEGAL;
2530 return type;
2531 }
2532
2533
2534 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2535 BasicType type = SystemDictionary::box_klass_type(box->klass());
2536 switch (type) {
2537 case T_BOOLEAN:
2538 value->z = box->bool_field(value_offset);
2539 break;
2540 case T_CHAR:
2541 value->c = box->char_field(value_offset);
2542 break;
2543 case T_FLOAT:
2544 value->f = box->float_field(value_offset);
2545 break;
2546 case T_DOUBLE:
2547 value->d = box->double_field(long_value_offset);
2548 break;
2549 case T_BYTE:
2550 value->b = box->byte_field(value_offset);
2551 break;
2552 case T_SHORT:
2553 value->s = box->short_field(value_offset);
2554 break;
2555 case T_INT:
2556 value->i = box->int_field(value_offset);
2557 break;
2558 case T_LONG:
2559 value->j = box->long_field(long_value_offset);
2560 break;
2561 default:
2562 return T_ILLEGAL;
2563 } // end switch
2564 return type;
2565 }
2566
2567
2568 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2569 BasicType type = SystemDictionary::box_klass_type(box->klass());
2570 switch (type) {
2571 case T_BOOLEAN:
2572 box->bool_field_put(value_offset, value->z);
2573 break;
2574 case T_CHAR:
2575 box->char_field_put(value_offset, value->c);
2576 break;
2577 case T_FLOAT:
2578 box->float_field_put(value_offset, value->f);
2579 break;
2580 case T_DOUBLE:
2581 box->double_field_put(long_value_offset, value->d);
2582 break;
2583 case T_BYTE:
2584 box->byte_field_put(value_offset, value->b);
2585 break;
2586 case T_SHORT:
2587 box->short_field_put(value_offset, value->s);
2588 break;
2589 case T_INT:
2590 box->int_field_put(value_offset, value->i);
2591 break;
2592 case T_LONG:
2593 box->long_field_put(long_value_offset, value->j);
2594 break;
2595 default:
2596 return T_ILLEGAL;
2597 } // end switch
2598 return type;
2599 }
2600
2601
2602 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2603 switch (type) {
2604 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2605 case T_CHAR: st->print("%d", value->c); break;
2606 case T_BYTE: st->print("%d", value->b); break;
2607 case T_SHORT: st->print("%d", value->s); break;
2608 case T_INT: st->print("%d", value->i); break;
2609 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2610 case T_FLOAT: st->print("%f", value->f); break;
2611 case T_DOUBLE: st->print("%lf", value->d); break;
2612 default: st->print("type %d?", type); break;
2613 }
2614 }
2615
2616
2617 // Support for java_lang_ref_Reference
2618 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
2619 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2620 address addr = ik->static_field_addr(static_lock_offset);
2621 return (HeapWord*) addr;
2622 }
2623
2624 oop java_lang_ref_Reference::pending_list_lock() {
2625 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2626 address addr = ik->static_field_addr(static_lock_offset);
2627 if (UseCompressedOops) {
2628 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2629 } else {
2630 return oopDesc::load_decode_heap_oop((oop*)addr);
2631 }
2632 }
2633
2634 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2635 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass());
2636 address addr = ik->static_field_addr(static_pending_offset);
2637 // XXX This might not be HeapWord aligned, almost rather be char *.
2638 return (HeapWord*)addr;
2639 }
2640
2641 oop java_lang_ref_Reference::pending_list() {
2642 char *addr = (char *)pending_list_addr();
2643 if (UseCompressedOops) {
2644 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2645 } else {
2646 return oopDesc::load_decode_heap_oop((oop*)addr);
2647 }
2648 }
2649
2650
2651 // Support for java_lang_ref_SoftReference
2652
2653 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2654 return ref->long_field(timestamp_offset);
2655 }
2656
2657 jlong java_lang_ref_SoftReference::clock() {
2658 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2659 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2660 return *offset;
2661 }
2662
2663 void java_lang_ref_SoftReference::set_clock(jlong value) {
2664 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass());
2665 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2666 *offset = value;
2667 }
2668
2669 // Support for java_lang_invoke_DirectMethodHandle
2670
2671 int java_lang_invoke_DirectMethodHandle::_member_offset;
2672
2673 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
2674 oop member_name = NULL;
2675 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
2676 assert(is_dmh, "a DirectMethodHandle oop is expected");
2677 if (is_dmh) {
2678 member_name = dmh->obj_field(member_offset_in_bytes());
2679 }
2680 return member_name;
2681 }
2682
2683 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2684 Klass* klass_oop = SystemDictionary::DirectMethodHandle_klass();
2685 if (klass_oop != NULL) {
2686 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2687 }
2688 }
2689
2690 // Support for java_lang_invoke_MethodHandle
2691
2692 int java_lang_invoke_MethodHandle::_type_offset;
2693 int java_lang_invoke_MethodHandle::_form_offset;
2694
2695 int java_lang_invoke_MemberName::_clazz_offset;
2696 int java_lang_invoke_MemberName::_name_offset;
2697 int java_lang_invoke_MemberName::_type_offset;
2698 int java_lang_invoke_MemberName::_flags_offset;
2699 int java_lang_invoke_MemberName::_vmtarget_offset;
2700 int java_lang_invoke_MemberName::_vmloader_offset;
2701 int java_lang_invoke_MemberName::_vmindex_offset;
2702
2703 int java_lang_invoke_LambdaForm::_vmentry_offset;
2704
2705 void java_lang_invoke_MethodHandle::compute_offsets() {
2706 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
2707 if (klass_oop != NULL) {
2708 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2709 compute_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2710 }
2711 }
2712
2713 void java_lang_invoke_MemberName::compute_offsets() {
2714 Klass* klass_oop = SystemDictionary::MemberName_klass();
2715 if (klass_oop != NULL) {
2716 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2717 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2718 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2719 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2720 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2721 }
2722 }
2723
2724 void java_lang_invoke_LambdaForm::compute_offsets() {
2725 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
2726 if (klass_oop != NULL) {
2727 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2728 }
2729 }
2730
2731 oop java_lang_invoke_MethodHandle::type(oop mh) {
2732 return mh->obj_field(_type_offset);
2733 }
2734
2735 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2736 mh->obj_field_put(_type_offset, mtype);
2737 }
2738
2739 oop java_lang_invoke_MethodHandle::form(oop mh) {
2740 assert(_form_offset != 0, "");
2741 return mh->obj_field(_form_offset);
2742 }
2743
2744 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2745 assert(_form_offset != 0, "");
2746 mh->obj_field_put(_form_offset, lform);
2747 }
2748
2749 /// MemberName accessors
2750
2751 oop java_lang_invoke_MemberName::clazz(oop mname) {
2752 assert(is_instance(mname), "wrong type");
2753 return mname->obj_field(_clazz_offset);
2754 }
2755
2756 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2757 assert(is_instance(mname), "wrong type");
2758 mname->obj_field_put(_clazz_offset, clazz);
2759 }
2760
2761 oop java_lang_invoke_MemberName::name(oop mname) {
2762 assert(is_instance(mname), "wrong type");
2763 return mname->obj_field(_name_offset);
2764 }
2765
2766 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2767 assert(is_instance(mname), "wrong type");
2768 mname->obj_field_put(_name_offset, name);
2769 }
2770
2771 oop java_lang_invoke_MemberName::type(oop mname) {
2772 assert(is_instance(mname), "wrong type");
2773 return mname->obj_field(_type_offset);
2774 }
2775
2776 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2777 assert(is_instance(mname), "wrong type");
2778 mname->obj_field_put(_type_offset, type);
2779 }
2780
2781 int java_lang_invoke_MemberName::flags(oop mname) {
2782 assert(is_instance(mname), "wrong type");
2783 return mname->int_field(_flags_offset);
2784 }
2785
2786 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2787 assert(is_instance(mname), "wrong type");
2788 mname->int_field_put(_flags_offset, flags);
2789 }
2790
2791 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
2792 assert(is_instance(mname), "wrong type");
2793 return (Metadata*)mname->address_field(_vmtarget_offset);
2794 }
2795
2796 #if INCLUDE_JVMTI
2797 // Can be executed on VM thread only
2798 void java_lang_invoke_MemberName::adjust_vmtarget(oop mname, Metadata* ref) {
2799 assert((is_instance(mname) && (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0), "wrong type");
2800 assert(Thread::current()->is_VM_thread(), "not VM thread");
2801 mname->address_field_put(_vmtarget_offset, (address)ref);
2802 }
2803 #endif // INCLUDE_JVMTI
2804
2805 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
2806 assert(is_instance(mname), "wrong type");
2807 // check the type of the vmtarget
2808 oop dependency = NULL;
2809 if (ref != NULL) {
2810 switch (flags(mname) & (MN_IS_METHOD |
2811 MN_IS_CONSTRUCTOR |
2812 MN_IS_FIELD)) {
2813 case MN_IS_METHOD:
2814 case MN_IS_CONSTRUCTOR:
2815 assert(ref->is_method(), "should be a method");
2816 dependency = ((Method*)ref)->method_holder()->java_mirror();
2817 break;
2818 case MN_IS_FIELD:
2819 assert(ref->is_klass(), "should be a class");
2820 dependency = ((Klass*)ref)->java_mirror();
2821 break;
2822 default:
2823 ShouldNotReachHere();
2824 }
2825 }
2826 mname->address_field_put(_vmtarget_offset, (address)ref);
2827 // Add a reference to the loader (actually mirror because anonymous classes will not have
2828 // distinct loaders) to ensure the metadata is kept alive
2829 // This mirror may be different than the one in clazz field.
2830 mname->obj_field_put(_vmloader_offset, dependency);
2831 }
2832
2833 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2834 assert(is_instance(mname), "wrong type");
2835 return (intptr_t) mname->address_field(_vmindex_offset);
2836 }
2837
2838 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2839 assert(is_instance(mname), "wrong type");
2840 mname->address_field_put(_vmindex_offset, (address) index);
2841 }
2842
2843 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2844 assert(is_instance(lform), "wrong type");
2845 return lform->obj_field(_vmentry_offset);
2846 }
2847
2848
2849 // Support for java_lang_invoke_MethodType
2850
2851 int java_lang_invoke_MethodType::_rtype_offset;
2852 int java_lang_invoke_MethodType::_ptypes_offset;
2853
2854 void java_lang_invoke_MethodType::compute_offsets() {
2855 Klass* k = SystemDictionary::MethodType_klass();
2856 if (k != NULL) {
2857 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2858 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2859 }
2860 }
2861
2862 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2863 st->print("(");
2864 objArrayOop pts = ptypes(mt);
2865 for (int i = 0, limit = pts->length(); i < limit; i++) {
2866 java_lang_Class::print_signature(pts->obj_at(i), st);
2867 }
2868 st->print(")");
2869 java_lang_Class::print_signature(rtype(mt), st);
2870 }
2871
2872 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2873 ResourceMark rm;
2874 stringStream buffer(128);
2875 print_signature(mt, &buffer);
2876 const char* sigstr = buffer.base();
2877 int siglen = (int) buffer.size();
2878 Symbol *name;
2879 if (!intern_if_not_found) {
2880 name = SymbolTable::probe(sigstr, siglen);
2881 } else {
2882 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2883 }
2884 return name;
2885 }
2886
2887 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2888 if (mt1 == mt2)
2889 return true;
2890 if (rtype(mt1) != rtype(mt2))
2891 return false;
2892 if (ptype_count(mt1) != ptype_count(mt2))
2893 return false;
2894 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2895 if (ptype(mt1, i) != ptype(mt2, i))
2896 return false;
2897 }
2898 return true;
2899 }
2900
2901 oop java_lang_invoke_MethodType::rtype(oop mt) {
2902 assert(is_instance(mt), "must be a MethodType");
2903 return mt->obj_field(_rtype_offset);
2904 }
2905
2906 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2907 assert(is_instance(mt), "must be a MethodType");
2908 return (objArrayOop) mt->obj_field(_ptypes_offset);
2909 }
2910
2911 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2912 return ptypes(mt)->obj_at(idx);
2913 }
2914
2915 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2916 return ptypes(mt)->length();
2917 }
2918
2919 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2920 objArrayOop pts = ptypes(mt);
2921 int count = pts->length();
2922 int slots = 0;
2923 for (int i = 0; i < count; i++) {
2924 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2925 slots += type2size[bt];
2926 }
2927 return slots;
2928 }
2929
2930 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2931 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2932 return type2size[bt];
2933 }
2934
2935
2936 // Support for java_lang_invoke_CallSite
2937
2938 int java_lang_invoke_CallSite::_target_offset;
2939
2940 void java_lang_invoke_CallSite::compute_offsets() {
2941 Klass* k = SystemDictionary::CallSite_klass();
2942 if (k != NULL) {
2943 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2944 }
2945 }
2946
2947
2948 // Support for java_security_AccessControlContext
2949
2950 int java_security_AccessControlContext::_context_offset = 0;
2951 int java_security_AccessControlContext::_privilegedContext_offset = 0;
2952 int java_security_AccessControlContext::_isPrivileged_offset = 0;
2953 int java_security_AccessControlContext::_isAuthorized_offset = -1;
2954
2955 void java_security_AccessControlContext::compute_offsets() {
2956 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
2957 fieldDescriptor fd;
2958 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass());
2959
2960 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
2961 fatal("Invalid layout of java.security.AccessControlContext");
2962 }
2963 _context_offset = fd.offset();
2964
2965 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
2966 fatal("Invalid layout of java.security.AccessControlContext");
2967 }
2968 _privilegedContext_offset = fd.offset();
2969
2970 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
2971 fatal("Invalid layout of java.security.AccessControlContext");
2972 }
2973 _isPrivileged_offset = fd.offset();
2974
2975 // The offset may not be present for bootstrapping with older JDK.
2976 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
2977 _isAuthorized_offset = fd.offset();
2978 }
2979 }
2980
2981
2982 bool java_security_AccessControlContext::is_authorized(Handle context) {
2983 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
2984 assert(_isAuthorized_offset != -1, "should be set");
2985 return context->bool_field(_isAuthorized_offset) != 0;
2986 }
2987
2988 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
2989 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
2990 // Ensure klass is initialized
2991 InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0);
2992 // Allocate result
2993 oop result = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0);
2994 // Fill in values
2995 result->obj_field_put(_context_offset, context());
2996 result->obj_field_put(_privilegedContext_offset, privileged_context());
2997 result->bool_field_put(_isPrivileged_offset, isPrivileged);
2998 // whitelist AccessControlContexts created by the JVM if present
2999 if (_isAuthorized_offset != -1) {
3000 result->bool_field_put(_isAuthorized_offset, true);
3001 }
3002 return result;
3003 }
3004
3005
3006 // Support for java_lang_ClassLoader
3007
3008 bool java_lang_ClassLoader::offsets_computed = false;
3009 int java_lang_ClassLoader::_loader_data_offset = -1;
3010 int java_lang_ClassLoader::parallelCapable_offset = -1;
3011
3012 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
3013 assert(loader != NULL && loader->is_oop(), "loader must be oop");
3014 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
3015 }
3016
3017 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3018 return *java_lang_ClassLoader::loader_data_addr(loader);
3019 }
3020
3021 void java_lang_ClassLoader::compute_offsets() {
3022 assert(!offsets_computed, "offsets should be initialized only once");
3023 offsets_computed = true;
3024
3025 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
3026 Klass* k1 = SystemDictionary::ClassLoader_klass();
3027 compute_optional_offset(parallelCapable_offset,
3028 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
3029
3030 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3031 }
3032
3033 oop java_lang_ClassLoader::parent(oop loader) {
3034 assert(is_instance(loader), "loader must be oop");
3035 return loader->obj_field(parent_offset);
3036 }
3037
3038 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
3039 assert(is_instance(loader), "loader must be oop");
3040 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
3041 oop acl = loader;
3042 debug_only(jint loop_count = 0);
3043 // This loop taken verbatim from ClassLoader.java:
3044 do {
3045 acl = parent(acl);
3046 if (cl == acl) {
3047 return true;
3048 }
3049 assert(++loop_count > 0, "loop_count overflow");
3050 } while (acl != NULL);
3051 return false;
3052 }
3053
3054
3055 // For class loader classes, parallelCapable defined
3056 // based on non-null field
3057 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
3058 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
3059 if (parallelCapable_offset == -1) {
3060 // Default for backward compatibility is false
3061 return false;
3062 }
3063 return (class_loader->obj_field(parallelCapable_offset) != NULL);
3064 }
3065
3066 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
3067 // Fix for 4474172; see evaluation for more details
3068 loader = non_reflection_class_loader(loader);
3069
3070 oop cl = SystemDictionary::java_system_loader();
3071 while(cl != NULL) {
3072 if (cl == loader) return true;
3073 cl = parent(cl);
3074 }
3075 return false;
3076 }
3077
3078 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
3079 if (loader != NULL) {
3080 // See whether this is one of the class loaders associated with
3081 // the generated bytecodes for reflection, and if so, "magically"
3082 // delegate to its parent to prevent class loading from occurring
3083 // in places where applications using reflection didn't expect it.
3084 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
3085 // This might be null in non-1.4 JDKs
3086 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
3087 return parent(loader);
3088 }
3089 }
3090 return loader;
3091 }
3092
3093
3094 // Support for java_lang_System
3095 int java_lang_System::in_offset_in_bytes() {
3096 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
3097 }
3098
3099
3100 int java_lang_System::out_offset_in_bytes() {
3101 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
3102 }
3103
3104
3105 int java_lang_System::err_offset_in_bytes() {
3106 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
3107 }
3108
3109
3110 bool java_lang_System::has_security_manager() {
3111 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::System_klass());
3112 address addr = ik->static_field_addr(static_security_offset);
3113 if (UseCompressedOops) {
3114 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
3115 } else {
3116 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
3117 }
3118 }
3119
3120 int java_lang_Class::_klass_offset;
3121 int java_lang_Class::_array_klass_offset;
3122 int java_lang_Class::_oop_size_offset;
3123 int java_lang_Class::_static_oop_field_count_offset;
3124 int java_lang_Class::_class_loader_offset;
3125 int java_lang_Class::_protection_domain_offset;
3126 int java_lang_Class::_component_mirror_offset;
3127 int java_lang_Class::_init_lock_offset;
3128 int java_lang_Class::_signers_offset;
3129 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
3130 int java_lang_Throwable::backtrace_offset;
3131 int java_lang_Throwable::detailMessage_offset;
3132 int java_lang_Throwable::cause_offset;
3133 int java_lang_Throwable::stackTrace_offset;
3134 int java_lang_Throwable::static_unassigned_stacktrace_offset;
3135 int java_lang_reflect_AccessibleObject::override_offset;
3136 int java_lang_reflect_Method::clazz_offset;
3137 int java_lang_reflect_Method::name_offset;
3138 int java_lang_reflect_Method::returnType_offset;
3139 int java_lang_reflect_Method::parameterTypes_offset;
3140 int java_lang_reflect_Method::exceptionTypes_offset;
3141 int java_lang_reflect_Method::slot_offset;
3142 int java_lang_reflect_Method::modifiers_offset;
3143 int java_lang_reflect_Method::signature_offset;
3144 int java_lang_reflect_Method::annotations_offset;
3145 int java_lang_reflect_Method::parameter_annotations_offset;
3146 int java_lang_reflect_Method::annotation_default_offset;
3147 int java_lang_reflect_Method::type_annotations_offset;
3148 int java_lang_reflect_Constructor::clazz_offset;
3149 int java_lang_reflect_Constructor::parameterTypes_offset;
3150 int java_lang_reflect_Constructor::exceptionTypes_offset;
3151 int java_lang_reflect_Constructor::slot_offset;
3152 int java_lang_reflect_Constructor::modifiers_offset;
3153 int java_lang_reflect_Constructor::signature_offset;
3154 int java_lang_reflect_Constructor::annotations_offset;
3155 int java_lang_reflect_Constructor::parameter_annotations_offset;
3156 int java_lang_reflect_Constructor::type_annotations_offset;
3157 int java_lang_reflect_Field::clazz_offset;
3158 int java_lang_reflect_Field::name_offset;
3159 int java_lang_reflect_Field::type_offset;
3160 int java_lang_reflect_Field::slot_offset;
3161 int java_lang_reflect_Field::modifiers_offset;
3162 int java_lang_reflect_Field::signature_offset;
3163 int java_lang_reflect_Field::annotations_offset;
3164 int java_lang_reflect_Field::type_annotations_offset;
3165 int java_lang_reflect_Parameter::name_offset;
3166 int java_lang_reflect_Parameter::modifiers_offset;
3167 int java_lang_reflect_Parameter::index_offset;
3168 int java_lang_reflect_Parameter::executable_offset;
3169 int java_lang_boxing_object::value_offset;
3170 int java_lang_boxing_object::long_value_offset;
3171 int java_lang_ref_Reference::referent_offset;
3172 int java_lang_ref_Reference::queue_offset;
3173 int java_lang_ref_Reference::next_offset;
3174 int java_lang_ref_Reference::discovered_offset;
3175 int java_lang_ref_Reference::static_lock_offset;
3176 int java_lang_ref_Reference::static_pending_offset;
3177 int java_lang_ref_Reference::number_of_fake_oop_fields;
3178 int java_lang_ref_SoftReference::timestamp_offset;
3179 int java_lang_ref_SoftReference::static_clock_offset;
3180 int java_lang_ClassLoader::parent_offset;
3181 int java_lang_System::static_in_offset;
3182 int java_lang_System::static_out_offset;
3183 int java_lang_System::static_err_offset;
3184 int java_lang_System::static_security_offset;
3185 int java_lang_StackTraceElement::declaringClass_offset;
3186 int java_lang_StackTraceElement::methodName_offset;
3187 int java_lang_StackTraceElement::fileName_offset;
3188 int java_lang_StackTraceElement::lineNumber_offset;
3189 int java_lang_AssertionStatusDirectives::classes_offset;
3190 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3191 int java_lang_AssertionStatusDirectives::packages_offset;
3192 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3193 int java_lang_AssertionStatusDirectives::deflt_offset;
3194 int java_nio_Buffer::_limit_offset;
3195 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3196 int sun_reflect_ConstantPool::_oop_offset;
3197 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3198
3199
3200 // Support for java_lang_StackTraceElement
3201
3202 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3203 element->obj_field_put(fileName_offset, value);
3204 }
3205
3206 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3207 element->obj_field_put(declaringClass_offset, value);
3208 }
3209
3210 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3211 element->obj_field_put(methodName_offset, value);
3212 }
3213
3214 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3215 element->int_field_put(lineNumber_offset, value);
3216 }
3217
3218
3219 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3220
3221 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3222 o->obj_field_put(classes_offset, val);
3223 }
3224
3225 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3226 o->obj_field_put(classEnabled_offset, val);
3227 }
3228
3229 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3230 o->obj_field_put(packages_offset, val);
3231 }
3232
3233 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3234 o->obj_field_put(packageEnabled_offset, val);
3235 }
3236
3237 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3238 o->bool_field_put(deflt_offset, val);
3239 }
3240
3241
3242 // Support for intrinsification of java.nio.Buffer.checkIndex
3243 int java_nio_Buffer::limit_offset() {
3244 return _limit_offset;
3245 }
3246
3247
3248 void java_nio_Buffer::compute_offsets() {
3249 Klass* k = SystemDictionary::nio_Buffer_klass();
3250 assert(k != NULL, "must be loaded in 1.4+");
3251 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3252 }
3253
3254 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3255 if (_owner_offset != 0) return;
3256
3257 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3258 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3259 compute_offset(_owner_offset, k,
3260 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3261 }
3262
3263 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3264 assert(_owner_offset != 0, "Must be initialized");
3265 return obj->obj_field(_owner_offset);
3266 }
3267
3268 // Compute hard-coded offsets
3269 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3270 // are not available to determine the offset_of_static_fields.
3271 void JavaClasses::compute_hard_coded_offsets() {
3272 const int x = heapOopSize;
3273 const int header = instanceOopDesc::base_offset_in_bytes();
3274
3275 // Throwable Class
3276 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3277 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3278 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3279 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3280 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3281
3282 // java_lang_boxing_object
3283 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3284 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3285
3286 // java_lang_ref_Reference:
3287 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3288 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3289 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3290 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3291 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3292 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3293 // Artificial fields for java_lang_ref_Reference
3294 // The first field is for the discovered field added in 1.4
3295 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3296
3297 // java_lang_ref_SoftReference Class
3298 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3299 // Don't multiply static fields because they are always in wordSize units
3300 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3301
3302 // java_lang_ClassLoader
3303 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3304
3305 // java_lang_System
3306 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3307 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3308 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3309 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3310
3311 // java_lang_StackTraceElement
3312 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3313 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3314 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3315 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3316 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3317 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3318 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3319 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3320 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3321
3322 }
3323
3324
3325 // Compute non-hard-coded field offsets of all the classes in this file
3326 void JavaClasses::compute_offsets() {
3327 // java_lang_Class::compute_offsets was called earlier in bootstrap
3328 java_lang_ClassLoader::compute_offsets();
3329 java_lang_Thread::compute_offsets();
3330 java_lang_ThreadGroup::compute_offsets();
3331 java_lang_invoke_MethodHandle::compute_offsets();
3332 java_lang_invoke_DirectMethodHandle::compute_offsets();
3333 java_lang_invoke_MemberName::compute_offsets();
3334 java_lang_invoke_LambdaForm::compute_offsets();
3335 java_lang_invoke_MethodType::compute_offsets();
3336 java_lang_invoke_CallSite::compute_offsets();
3337 java_security_AccessControlContext::compute_offsets();
3338 // Initialize reflection classes. The layouts of these classes
3339 // changed with the new reflection implementation in JDK 1.4, and
3340 // since the Universe doesn't know what JDK version it is until this
3341 // point we defer computation of these offsets until now.
3342 java_lang_reflect_AccessibleObject::compute_offsets();
3343 java_lang_reflect_Method::compute_offsets();
3344 java_lang_reflect_Constructor::compute_offsets();
3345 java_lang_reflect_Field::compute_offsets();
3346 java_nio_Buffer::compute_offsets();
3347 sun_reflect_ConstantPool::compute_offsets();
3348 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3349 java_lang_reflect_Parameter::compute_offsets();
3350
3351 // generated interpreter code wants to know about the offsets we just computed:
3352 AbstractAssembler::update_delayed_values();
3353 }
3354
3355 #ifndef PRODUCT
3356
3357 // These functions exist to assert the validity of hard-coded field offsets to guard
3358 // against changes in the class files
3359
3360 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3361 EXCEPTION_MARK;
3362 fieldDescriptor fd;
3363 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3364 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3365 instanceKlassHandle h_klass (THREAD, k);
3366 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3367 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3368 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3369 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3370 return false;
3371 }
3372 if (fd.is_static()) {
3373 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3374 return false;
3375 }
3376 if (fd.offset() == hardcoded_offset ) {
3377 return true;
3378 } else {
3379 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3380 klass_name, field_name, hardcoded_offset, fd.offset());
3381 return false;
3382 }
3383 }
3384
3385
3386 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3387 EXCEPTION_MARK;
3388 fieldDescriptor fd;
3389 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3390 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3391 instanceKlassHandle h_klass (THREAD, k);
3392 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3393 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3394 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3395 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3396 return false;
3397 }
3398 if (!fd.is_static()) {
3399 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3400 return false;
3401 }
3402 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3403 return true;
3404 } else {
3405 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());
3406 return false;
3407 }
3408 }
3409
3410
3411 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3412 EXCEPTION_MARK;
3413 fieldDescriptor fd;
3414 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3415 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3416 instanceKlassHandle h_klass (THREAD, k);
3417 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3418 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3419 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3420 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3421 return false;
3422 }
3423 if (!fd.is_static() || !fd.has_initial_value()) {
3424 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3425 return false;
3426 }
3427 if (!fd.initial_value_tag().is_int()) {
3428 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3429 return false;
3430 }
3431 jint field_value = fd.int_initial_value();
3432 if (field_value == hardcoded_constant) {
3433 return true;
3434 } else {
3435 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);
3436 return false;
3437 }
3438 }
3439
3440
3441 // Check the hard-coded field offsets of all the classes in this file
3442
3443 void JavaClasses::check_offsets() {
3444 bool valid = true;
3445 HandleMark hm;
3446
3447 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3448 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3449
3450 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3451 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3452
3453 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3454 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3455
3456 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3457 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3458
3459 // java.lang.String
3460
3461 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3462 if (java_lang_String::has_offset_field()) {
3463 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3464 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3465 }
3466 if (java_lang_String::has_hash_field()) {
3467 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3468 }
3469
3470 // java.lang.Class
3471
3472 // Fake fields
3473 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3474 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3475
3476 // java.lang.Throwable
3477
3478 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3479 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3480 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3481 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3482
3483 // Boxed primitive objects (java_lang_boxing_object)
3484
3485 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3486 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3487 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3488 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3489 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3490 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3491 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3492 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3493
3494 // java.lang.ClassLoader
3495
3496 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3497
3498 // java.lang.System
3499
3500 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3501 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3502 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3503 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
3504
3505 // java.lang.StackTraceElement
3506
3507 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3508 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3509 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3510 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3511
3512 // java.lang.ref.Reference
3513
3514 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3515 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3516 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3517 // Fake field
3518 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3519 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3520 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3521
3522 // java.lang.ref.SoftReference
3523
3524 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3525 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3526
3527 // java.lang.AssertionStatusDirectives
3528 //
3529 // The CheckAssertionStatusDirectives boolean can be removed from here and
3530 // globals.hpp after the AssertionStatusDirectives class has been integrated
3531 // into merlin "for some time." Without it, the vm will fail with early
3532 // merlin builds.
3533
3534 if (CheckAssertionStatusDirectives) {
3535 const char* nm = "java/lang/AssertionStatusDirectives";
3536 const char* sig = "[Ljava/lang/String;";
3537 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3538 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3539 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3540 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3541 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3542 }
3543
3544 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3545 }
3546
3547 #endif // PRODUCT
3548
3549 int InjectedField::compute_offset() {
3550 Klass* klass_oop = klass();
3551 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3552 if (!may_be_java && !fs.access_flags().is_internal()) {
3553 // Only look at injected fields
3554 continue;
3555 }
3556 if (fs.name() == name() && fs.signature() == signature()) {
3557 return fs.offset();
3558 }
3559 }
3560 ResourceMark rm;
3561 tty->print_cr("Invalid layout of %s at %s/%s%s", InstanceKlass::cast(klass_oop)->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : "");
3562 #ifndef PRODUCT
3563 klass_oop->print();
3564 tty->print_cr("all fields:");
3565 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) {
3566 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3567 }
3568 #endif //PRODUCT
3569 fatal("Invalid layout of preloaded class");
3570 return -1;
3571 }
3572
3573 void javaClasses_init() {
3574 JavaClasses::compute_offsets();
3575 JavaClasses::check_offsets();
3576 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3577 }