1 /*
2 * Copyright (c) 1997, 2015, 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.inline.hpp"
28 #include "classfile/stringTable.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "code/debugInfo.hpp"
31 #include "code/pcDesc.hpp"
32 #include "interpreter/interpreter.hpp"
33 #include "memory/oopFactory.hpp"
34 #include "memory/resourceArea.hpp"
35 #include "memory/universe.inline.hpp"
36 #include "oops/fieldStreams.hpp"
37 #include "oops/instanceKlass.hpp"
38 #include "oops/instanceMirrorKlass.hpp"
39 #include "oops/klass.hpp"
40 #include "oops/method.hpp"
41 #include "oops/objArrayOop.inline.hpp"
42 #include "oops/oop.inline.hpp"
43 #include "oops/symbol.hpp"
44 #include "oops/typeArrayOop.hpp"
45 #include "prims/jvmtiRedefineClassesTrace.hpp"
46 #include "runtime/fieldDescriptor.hpp"
47 #include "runtime/handles.inline.hpp"
48 #include "runtime/interfaceSupport.hpp"
49 #include "runtime/java.hpp"
50 #include "runtime/javaCalls.hpp"
51 #include "runtime/safepoint.hpp"
52 #include "runtime/thread.inline.hpp"
53 #include "runtime/vframe.hpp"
54 #include "utilities/preserveException.hpp"
55
56 #if INCLUDE_JVMCI
57 #include "jvmci/jvmciJavaClasses.hpp"
58 #endif
59
60 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
61 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
62
63 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
64 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
65
66 InjectedField JavaClasses::_injected_fields[] = {
67 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
68 };
69
70 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
71 return _injected_fields[id].compute_offset();
72 }
73
74
75 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
76 *field_count = 0;
77
78 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
79 if (sid == vmSymbols::NO_SID) {
80 // Only well known classes can inject fields
81 return NULL;
82 }
83
84 int count = 0;
85 int start = -1;
86
87 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
88 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
89 count++; \
90 if (start == -1) start = klass##_##name##_enum; \
91 }
92 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
93 #undef LOOKUP_INJECTED_FIELD
94
95 if (start != -1) {
96 *field_count = count;
97 return _injected_fields + start;
98 }
99 return NULL;
100 }
101
102
103 static bool find_field(InstanceKlass* ik,
104 Symbol* name_symbol, Symbol* signature_symbol,
105 fieldDescriptor* fd,
106 bool is_static = false, bool allow_super = false) {
107 if (allow_super || is_static) {
108 return ik->find_field(name_symbol, signature_symbol, is_static, fd) != NULL;
109 } else {
110 return ik->find_local_field(name_symbol, signature_symbol, fd);
111 }
112 }
113
114 // Helpful routine for computing field offsets at run time rather than hardcoding them
115 static void
116 compute_offset(int &dest_offset,
117 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
118 bool is_static = false, bool allow_super = false) {
119 fieldDescriptor fd;
120 InstanceKlass* ik = InstanceKlass::cast(klass);
121 if (!find_field(ik, name_symbol, signature_symbol, &fd, is_static, allow_super)) {
122 ResourceMark rm;
123 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
124 #ifndef PRODUCT
125 ik->print();
126 tty->print_cr("all fields:");
127 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
128 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
129 }
130 #endif //PRODUCT
131 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class");
132 }
133 dest_offset = fd.offset();
134 }
135
136 // Same as above but for "optional" offsets that might not be present in certain JDK versions
137 static void
138 compute_optional_offset(int& dest_offset,
139 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
140 bool allow_super = false) {
141 fieldDescriptor fd;
142 InstanceKlass* ik = InstanceKlass::cast(klass);
143 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
144 dest_offset = fd.offset();
145 }
146 }
147
148
149 int java_lang_String::value_offset = 0;
150 int java_lang_String::offset_offset = 0;
151 int java_lang_String::count_offset = 0;
152 int java_lang_String::hash_offset = 0;
153
154 bool java_lang_String::initialized = false;
155
156 bool java_lang_String::is_instance(oop obj) {
157 return is_instance_inlined(obj);
158 }
159
160 void java_lang_String::compute_offsets() {
161 assert(!initialized, "offsets should be initialized only once");
162
163 Klass* k = SystemDictionary::String_klass();
164 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature());
165 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature());
166 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature());
167 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
168
169 initialized = true;
170 }
171
172 Handle java_lang_String::basic_create(int length, TRAPS) {
173 assert(initialized, "Must be initialized");
174 // Create the String object first, so there's a chance that the String
175 // and the char array it points to end up in the same cache line.
176 oop obj;
177 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
178
179 // Create the char array. The String object must be handlized here
180 // because GC can happen as a result of the allocation attempt.
181 Handle h_obj(THREAD, obj);
182 typeArrayOop buffer;
183 buffer = oopFactory::new_charArray(length, CHECK_NH);
184
185 // Point the String at the char array
186 obj = h_obj();
187 set_value(obj, buffer);
188 // No need to zero the offset, allocation zero'ed the entire String object
189 assert(offset(obj) == 0, "initial String offset should be zero");
190 //set_offset(obj, 0);
191 set_count(obj, length);
192
193 return h_obj;
194 }
195
196 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
197 Handle h_obj = basic_create(length, CHECK_NH);
198 typeArrayOop buffer = value(h_obj());
199 for (int index = 0; index < length; index++) {
200 buffer->char_at_put(index, unicode[index]);
201 }
202 return h_obj;
203 }
204
205 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
206 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
207 return h_obj();
208 }
209
210 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
211 if (utf8_str == NULL) {
212 return Handle();
213 }
214 int length = UTF8::unicode_length(utf8_str);
215 Handle h_obj = basic_create(length, CHECK_NH);
216 if (length > 0) {
217 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
218 }
219 return h_obj;
220 }
221
222 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
223 Handle h_obj = create_from_str(utf8_str, CHECK_0);
224 return h_obj();
225 }
226
227 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
228 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length());
229 Handle h_obj = basic_create(length, CHECK_NH);
230 if (length > 0) {
231 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length);
232 }
233 return h_obj;
234 }
235
236 // Converts a C string to a Java String based on current encoding
237 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
238 assert(str != NULL, "bad arguments");
239
240 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
241 static to_java_string_fn_t _to_java_string_fn = NULL;
242
243 if (_to_java_string_fn == NULL) {
244 void *lib_handle = os::native_java_library();
245 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
246 if (_to_java_string_fn == NULL) {
247 fatal("NewStringPlatform missing");
248 }
249 }
250
251 jstring js = NULL;
252 { JavaThread* thread = (JavaThread*)THREAD;
253 assert(thread->is_Java_thread(), "must be java thread");
254 HandleMark hm(thread);
255 ThreadToNativeFromVM ttn(thread);
256 js = (_to_java_string_fn)(thread->jni_environment(), str);
257 }
258 return Handle(THREAD, JNIHandles::resolve(js));
259 }
260
261 // Converts a Java String to a native C string that can be used for
262 // native OS calls.
263 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
264
265 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
266 static to_platform_string_fn_t _to_platform_string_fn = NULL;
267
268 if (_to_platform_string_fn == NULL) {
269 void *lib_handle = os::native_java_library();
270 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
271 if (_to_platform_string_fn == NULL) {
272 fatal("GetStringPlatformChars missing");
273 }
274 }
275
276 char *native_platform_string;
277 { JavaThread* thread = (JavaThread*)THREAD;
278 assert(thread->is_Java_thread(), "must be java thread");
279 JNIEnv *env = thread->jni_environment();
280 jstring js = (jstring) JNIHandles::make_local(env, java_string());
281 bool is_copy;
282 HandleMark hm(thread);
283 ThreadToNativeFromVM ttn(thread);
284 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
285 assert(is_copy == JNI_TRUE, "is_copy value changed");
286 JNIHandles::destroy_local(js);
287 }
288 return native_platform_string;
289 }
290
291 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
292 oop obj = java_string();
293 // Typical usage is to convert all '/' to '.' in string.
294 typeArrayOop value = java_lang_String::value(obj);
295 int offset = java_lang_String::offset(obj);
296 int length = java_lang_String::length(obj);
297
298 // First check if any from_char exist
299 int index; // Declared outside, used later
300 for (index = 0; index < length; index++) {
301 if (value->char_at(index + offset) == from_char) {
302 break;
303 }
304 }
305 if (index == length) {
306 // No from_char, so do not copy.
307 return java_string;
308 }
309
310 // Create new UNICODE buffer. Must handlize value because GC
311 // may happen during String and char array creation.
312 typeArrayHandle h_value(THREAD, value);
313 Handle string = basic_create(length, CHECK_NH);
314
315 typeArrayOop from_buffer = h_value();
316 typeArrayOop to_buffer = java_lang_String::value(string());
317
318 // Copy contents
319 for (index = 0; index < length; index++) {
320 jchar c = from_buffer->char_at(index + offset);
321 if (c == from_char) {
322 c = to_char;
323 }
324 to_buffer->char_at_put(index, c);
325 }
326 return string;
327 }
328
329 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
330 typeArrayOop value = java_lang_String::value(java_string);
331 int offset = java_lang_String::offset(java_string);
332 length = java_lang_String::length(java_string);
333
334 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
335 if (result != NULL) {
336 for (int index = 0; index < length; index++) {
337 result[index] = value->char_at(index + offset);
338 }
339 } else {
340 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
341 }
342 return result;
343 }
344
345 unsigned int java_lang_String::hash_code(oop java_string) {
346 int length = java_lang_String::length(java_string);
347 // Zero length string will hash to zero with String.hashCode() function.
348 if (length == 0) return 0;
349
350 typeArrayOop value = java_lang_String::value(java_string);
351 int offset = java_lang_String::offset(java_string);
352 return java_lang_String::hash_code(value->char_at_addr(offset), length);
353 }
354
355 char* java_lang_String::as_quoted_ascii(oop java_string) {
356 typeArrayOop value = java_lang_String::value(java_string);
357 int offset = java_lang_String::offset(java_string);
358 int length = java_lang_String::length(java_string);
359
360 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
361 if (base == NULL) return NULL;
362
363 int result_length = UNICODE::quoted_ascii_length(base, length) + 1;
364 char* result = NEW_RESOURCE_ARRAY(char, result_length);
365 UNICODE::as_quoted_ascii(base, length, result, result_length);
366 assert(result_length >= length + 1, "must not be shorter");
367 assert(result_length == (int)strlen(result) + 1, "must match");
368 return result;
369 }
370
371 unsigned int java_lang_String::hash_string(oop java_string) {
372 int length = java_lang_String::length(java_string);
373 // Zero length string doesn't hash necessarily hash to zero.
374 if (length == 0) {
375 return StringTable::hash_string(NULL, 0);
376 }
377
378 typeArrayOop value = java_lang_String::value(java_string);
379 int offset = java_lang_String::offset(java_string);
380 return StringTable::hash_string(value->char_at_addr(offset), length);
381 }
382
383 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
384 oop obj = java_string();
385 typeArrayOop value = java_lang_String::value(obj);
386 int offset = java_lang_String::offset(obj);
387 int length = java_lang_String::length(obj);
388 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset);
389 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
390 return sym;
391 }
392
393 Symbol* java_lang_String::as_symbol_or_null(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* base = (length == 0) ? NULL : value->char_at_addr(offset);
398 return SymbolTable::probe_unicode(base, length);
399 }
400
401
402 int java_lang_String::utf8_length(oop java_string) {
403 typeArrayOop value = java_lang_String::value(java_string);
404 int offset = java_lang_String::offset(java_string);
405 int length = java_lang_String::length(java_string);
406 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
407 return UNICODE::utf8_length(position, length);
408 }
409
410 char* java_lang_String::as_utf8_string(oop java_string) {
411 typeArrayOop value = java_lang_String::value(java_string);
412 int offset = java_lang_String::offset(java_string);
413 int length = java_lang_String::length(java_string);
414 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
415 return UNICODE::as_utf8(position, length);
416 }
417
418 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
419 typeArrayOop value = java_lang_String::value(java_string);
420 int offset = java_lang_String::offset(java_string);
421 int length = java_lang_String::length(java_string);
422 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset);
423 return UNICODE::as_utf8(position, length, buf, buflen);
424 }
425
426 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
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);
433 }
434
435 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
436 typeArrayOop value = java_lang_String::value(java_string);
437 int offset = java_lang_String::offset(java_string);
438 int length = java_lang_String::length(java_string);
439 assert(start + len <= length, "just checking");
440 jchar* position = value->char_at_addr(offset + start);
441 return UNICODE::as_utf8(position, len, buf, buflen);
442 }
443
444 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
445 assert(java_string->klass() == SystemDictionary::String_klass(),
446 "must be java_string");
447 typeArrayOop value = java_lang_String::value(java_string);
448 int offset = java_lang_String::offset(java_string);
449 int length = java_lang_String::length(java_string);
450 if (length != len) {
451 return false;
452 }
453 for (int i = 0; i < len; i++) {
454 if (value->char_at(i + offset) != chars[i]) {
455 return false;
456 }
457 }
458 return true;
459 }
460
461 bool java_lang_String::equals(oop str1, oop str2) {
462 assert(str1->klass() == SystemDictionary::String_klass(),
463 "must be java String");
464 assert(str2->klass() == SystemDictionary::String_klass(),
465 "must be java String");
466 typeArrayOop value1 = java_lang_String::value(str1);
467 int offset1 = java_lang_String::offset(str1);
468 int length1 = java_lang_String::length(str1);
469 typeArrayOop value2 = java_lang_String::value(str2);
470 int offset2 = java_lang_String::offset(str2);
471 int length2 = java_lang_String::length(str2);
472
473 if (length1 != length2) {
474 return false;
475 }
476 for (int i = 0; i < length1; i++) {
477 if (value1->char_at(i + offset1) != value2->char_at(i + offset2)) {
478 return false;
479 }
480 }
481 return true;
482 }
483
484 void java_lang_String::print(oop java_string, outputStream* st) {
485 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
486 typeArrayOop value = java_lang_String::value(java_string);
487
488 if (value == NULL) {
489 // This can happen if, e.g., printing a String
490 // object before its initializer has been called
491 st->print("NULL");
492 return;
493 }
494
495 int offset = java_lang_String::offset(java_string);
496 int length = java_lang_String::length(java_string);
497
498 st->print("\"");
499 for (int index = 0; index < length; index++) {
500 st->print("%c", value->char_at(index + offset));
501 }
502 st->print("\"");
503 }
504
505
506 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
507 assert(mirror.not_null() && fd->is_static(), "just checking");
508 if (fd->has_initial_value()) {
509 BasicType t = fd->field_type();
510 switch (t) {
511 case T_BYTE:
512 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
513 break;
514 case T_BOOLEAN:
515 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
516 break;
517 case T_CHAR:
518 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
519 break;
520 case T_SHORT:
521 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
522 break;
523 case T_INT:
524 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
525 break;
526 case T_FLOAT:
527 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
528 break;
529 case T_DOUBLE:
530 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
531 break;
532 case T_LONG:
533 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
534 break;
535 case T_OBJECT:
536 {
537 #ifdef ASSERT
538 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
539 assert(fd->signature() == sym, "just checking");
540 #endif
541 oop string = fd->string_initial_value(CHECK);
542 mirror()->obj_field_put(fd->offset(), string);
543 }
544 break;
545 default:
546 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
547 "Illegal ConstantValue attribute in class file");
548 }
549 }
550 }
551
552
553 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
554 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
555
556 // If the offset was read from the shared archive, it was fixed up already
557 if (!k->is_shared()) {
558 if (k->is_instance_klass()) {
559 // During bootstrap, java.lang.Class wasn't loaded so static field
560 // offsets were computed without the size added it. Go back and
561 // update all the static field offsets to included the size.
562 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
563 if (fs.access_flags().is_static()) {
564 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
565 fs.set_offset(real_offset);
566 }
567 }
568 }
569 }
570 create_mirror(k, Handle(NULL), Handle(NULL), CHECK);
571 }
572
573 void java_lang_Class::initialize_mirror_fields(KlassHandle k,
574 Handle mirror,
575 Handle protection_domain,
576 TRAPS) {
577 // Allocate a simple java object for a lock.
578 // This needs to be a java object because during class initialization
579 // it can be held across a java call.
580 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
581 set_init_lock(mirror(), r);
582
583 // Set protection domain also
584 set_protection_domain(mirror(), protection_domain());
585
586 // Initialize static fields
587 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, mirror, CHECK);
588 }
589
590 void java_lang_Class::create_mirror(KlassHandle k, Handle class_loader,
591 Handle protection_domain, TRAPS) {
592 assert(k->java_mirror() == NULL, "should only assign mirror once");
593 // Use this moment of initialization to cache modifier_flags also,
594 // to support Class.getModifiers(). Instance classes recalculate
595 // the cached flags after the class file is parsed, but before the
596 // class is put into the system dictionary.
597 int computed_modifiers = k->compute_modifier_flags(CHECK);
598 k->set_modifier_flags(computed_modifiers);
599 // Class_klass has to be loaded because it is used to allocate
600 // the mirror.
601 if (SystemDictionary::Class_klass_loaded()) {
602 // Allocate mirror (java.lang.Class instance)
603 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
604
605 // Setup indirection from mirror->klass
606 if (!k.is_null()) {
607 java_lang_Class::set_klass(mirror(), k());
608 }
609
610 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
611 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
612
613 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
614
615 // It might also have a component mirror. This mirror must already exist.
616 if (k->is_array_klass()) {
617 Handle comp_mirror;
618 if (k->is_typeArray_klass()) {
619 BasicType type = TypeArrayKlass::cast(k())->element_type();
620 comp_mirror = Universe::java_mirror(type);
621 } else {
622 assert(k->is_objArray_klass(), "Must be");
623 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
624 assert(element_klass != NULL, "Must have an element klass");
625 comp_mirror = element_klass->java_mirror();
626 }
627 assert(comp_mirror.not_null(), "must have a mirror");
628
629 // Two-way link between the array klass and its component mirror:
630 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
631 set_component_mirror(mirror(), comp_mirror());
632 set_array_klass(comp_mirror(), k());
633 } else {
634 assert(k->is_instance_klass(), "Must be");
635
636 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
637 if (HAS_PENDING_EXCEPTION) {
638 // If any of the fields throws an exception like OOM remove the klass field
639 // from the mirror so GC doesn't follow it after the klass has been deallocated.
640 // This mirror looks like a primitive type, which logically it is because it
641 // it represents no class.
642 java_lang_Class::set_klass(mirror(), NULL);
643 return;
644 }
645 }
646
647 // set the classLoader field in the java_lang_Class instance
648 assert(class_loader() == k->class_loader(), "should be same");
649 set_class_loader(mirror(), class_loader());
650
651 // Setup indirection from klass->mirror last
652 // after any exceptions can happen during allocations.
653 if (!k.is_null()) {
654 k->set_java_mirror(mirror());
655 }
656 } else {
657 if (fixup_mirror_list() == NULL) {
658 GrowableArray<Klass*>* list =
659 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
660 set_fixup_mirror_list(list);
661 }
662 fixup_mirror_list()->push(k());
663 }
664 }
665
666
667 int java_lang_Class::oop_size(oop java_class) {
668 assert(_oop_size_offset != 0, "must be set");
669 return java_class->int_field(_oop_size_offset);
670 }
671 void java_lang_Class::set_oop_size(oop java_class, int size) {
672 assert(_oop_size_offset != 0, "must be set");
673 java_class->int_field_put(_oop_size_offset, size);
674 }
675 int java_lang_Class::static_oop_field_count(oop java_class) {
676 assert(_static_oop_field_count_offset != 0, "must be set");
677 return java_class->int_field(_static_oop_field_count_offset);
678 }
679 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
680 assert(_static_oop_field_count_offset != 0, "must be set");
681 java_class->int_field_put(_static_oop_field_count_offset, size);
682 }
683
684 oop java_lang_Class::protection_domain(oop java_class) {
685 assert(_protection_domain_offset != 0, "must be set");
686 return java_class->obj_field(_protection_domain_offset);
687 }
688 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
689 assert(_protection_domain_offset != 0, "must be set");
690 java_class->obj_field_put(_protection_domain_offset, pd);
691 }
692
693 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
694 assert(_component_mirror_offset != 0, "must be set");
695 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
696 }
697 oop java_lang_Class::component_mirror(oop java_class) {
698 assert(_component_mirror_offset != 0, "must be set");
699 return java_class->obj_field(_component_mirror_offset);
700 }
701
702 oop java_lang_Class::init_lock(oop java_class) {
703 assert(_init_lock_offset != 0, "must be set");
704 return java_class->obj_field(_init_lock_offset);
705 }
706 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
707 assert(_init_lock_offset != 0, "must be set");
708 java_class->obj_field_put(_init_lock_offset, init_lock);
709 }
710
711 objArrayOop java_lang_Class::signers(oop java_class) {
712 assert(_signers_offset != 0, "must be set");
713 return (objArrayOop)java_class->obj_field(_signers_offset);
714 }
715 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
716 assert(_signers_offset != 0, "must be set");
717 java_class->obj_field_put(_signers_offset, (oop)signers);
718 }
719
720
721 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
722 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
723 if (_class_loader_offset != 0) {
724 java_class->obj_field_put(_class_loader_offset, loader);
725 }
726 }
727
728 oop java_lang_Class::class_loader(oop java_class) {
729 assert(_class_loader_offset != 0, "must be set");
730 return java_class->obj_field(_class_loader_offset);
731 }
732
733 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
734 // This should be improved by adding a field at the Java level or by
735 // introducing a new VM klass (see comment in ClassFileParser)
736 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
737 if (type != T_VOID) {
738 Klass* aklass = Universe::typeArrayKlassObj(type);
739 assert(aklass != NULL, "correct bootstrap");
740 set_array_klass(java_class, aklass);
741 }
742 #ifdef ASSERT
743 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
744 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
745 #endif
746 return java_class;
747 }
748
749
750 Klass* java_lang_Class::as_Klass(oop java_class) {
751 //%note memory_2
752 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
753 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
754 assert(k == NULL || k->is_klass(), "type check");
755 return k;
756 }
757
758
759 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
760 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
761 java_class->metadata_field_put(_klass_offset, klass);
762 }
763
764
765 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
766 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
767 Symbol* name = NULL;
768 bool is_instance = false;
769 if (is_primitive(java_class)) {
770 name = vmSymbols::type_signature(primitive_type(java_class));
771 } else {
772 Klass* k = as_Klass(java_class);
773 is_instance = k->is_instance_klass();
774 name = k->name();
775 }
776 if (name == NULL) {
777 st->print("<null>");
778 return;
779 }
780 if (is_instance) st->print("L");
781 st->write((char*) name->base(), (int) name->utf8_length());
782 if (is_instance) st->print(";");
783 }
784
785 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
786 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
787 Symbol* name;
788 if (is_primitive(java_class)) {
789 name = vmSymbols::type_signature(primitive_type(java_class));
790 // Because this can create a new symbol, the caller has to decrement
791 // the refcount, so make adjustment here and below for symbols returned
792 // that are not created or incremented due to a successful lookup.
793 name->increment_refcount();
794 } else {
795 Klass* k = as_Klass(java_class);
796 if (!k->is_instance_klass()) {
797 name = k->name();
798 name->increment_refcount();
799 } else {
800 ResourceMark rm;
801 const char* sigstr = k->signature_name();
802 int siglen = (int) strlen(sigstr);
803 if (!intern_if_not_found) {
804 name = SymbolTable::probe(sigstr, siglen);
805 } else {
806 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
807 }
808 }
809 }
810 return name;
811 }
812
813 // Returns the Java name for this Java mirror (Resource allocated)
814 // See Klass::external_name().
815 // For primitive type Java mirrors, its type name is returned.
816 const char* java_lang_Class::as_external_name(oop java_class) {
817 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
818 const char* name = NULL;
819 if (is_primitive(java_class)) {
820 name = type2name(primitive_type(java_class));
821 } else {
822 name = as_Klass(java_class)->external_name();
823 }
824 if (name == NULL) {
825 name = "<null>";
826 }
827 return name;
828 }
829
830 Klass* java_lang_Class::array_klass(oop java_class) {
831 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
832 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
833 return k;
834 }
835
836
837 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
838 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
839 java_class->metadata_field_put(_array_klass_offset, klass);
840 }
841
842
843 bool java_lang_Class::is_primitive(oop java_class) {
844 // should assert:
845 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
846 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
847
848 #ifdef ASSERT
849 if (is_primitive) {
850 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
851 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
852 "Should be either the T_VOID primitive or a java primitive");
853 }
854 #endif
855
856 return is_primitive;
857 }
858
859
860 BasicType java_lang_Class::primitive_type(oop java_class) {
861 assert(java_lang_Class::is_primitive(java_class), "just checking");
862 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
863 BasicType type = T_VOID;
864 if (ak != NULL) {
865 // Note: create_basic_type_mirror above initializes ak to a non-null value.
866 type = ArrayKlass::cast(ak)->element_type();
867 } else {
868 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
869 }
870 assert(Universe::java_mirror(type) == java_class, "must be consistent");
871 return type;
872 }
873
874 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
875 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
876 if (is_primitive(java_class)) {
877 if (reference_klass != NULL)
878 (*reference_klass) = NULL;
879 return primitive_type(java_class);
880 } else {
881 if (reference_klass != NULL)
882 (*reference_klass) = as_Klass(java_class);
883 return T_OBJECT;
884 }
885 }
886
887
888 oop java_lang_Class::primitive_mirror(BasicType t) {
889 oop mirror = Universe::java_mirror(t);
890 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
891 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
892 return mirror;
893 }
894
895 bool java_lang_Class::offsets_computed = false;
896 int java_lang_Class::classRedefinedCount_offset = -1;
897
898 void java_lang_Class::compute_offsets() {
899 assert(!offsets_computed, "offsets should be initialized only once");
900 offsets_computed = true;
901
902 Klass* k = SystemDictionary::Class_klass();
903 // The classRedefinedCount field is only present starting in 1.5,
904 // so don't go fatal.
905 compute_optional_offset(classRedefinedCount_offset,
906 k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
907
908 // Needs to be optional because the old build runs Queens during bootstrapping
909 // and jdk8-9 doesn't have coordinated pushes yet.
910 compute_optional_offset(_class_loader_offset,
911 k, vmSymbols::classLoader_name(),
912 vmSymbols::classloader_signature());
913
914 compute_offset(_component_mirror_offset,
915 k, vmSymbols::componentType_name(),
916 vmSymbols::class_signature());
917
918 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
919 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
920 // GC treats them the same.
921 _init_lock_offset = _component_mirror_offset;
922
923 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
924 }
925
926 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
927 if (classRedefinedCount_offset == -1) {
928 // If we don't have an offset for it then just return -1 as a marker.
929 return -1;
930 }
931
932 return the_class_mirror->int_field(classRedefinedCount_offset);
933 }
934
935 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
936 if (classRedefinedCount_offset == -1) {
937 // If we don't have an offset for it then nothing to set.
938 return;
939 }
940
941 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
942 }
943
944
945 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
946 // platform thread structure, and a eetop offset which was used for thread
947 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
948 // merged, so in the HotSpot VM we just use the eetop field for the thread
949 // instead of the privateInfo_offset.
950 //
951 // Note: The stackSize field is only present starting in 1.4.
952
953 int java_lang_Thread::_name_offset = 0;
954 int java_lang_Thread::_group_offset = 0;
955 int java_lang_Thread::_contextClassLoader_offset = 0;
956 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
957 int java_lang_Thread::_priority_offset = 0;
958 int java_lang_Thread::_eetop_offset = 0;
959 int java_lang_Thread::_daemon_offset = 0;
960 int java_lang_Thread::_stillborn_offset = 0;
961 int java_lang_Thread::_stackSize_offset = 0;
962 int java_lang_Thread::_tid_offset = 0;
963 int java_lang_Thread::_thread_status_offset = 0;
964 int java_lang_Thread::_park_blocker_offset = 0;
965 int java_lang_Thread::_park_event_offset = 0 ;
966
967
968 void java_lang_Thread::compute_offsets() {
969 assert(_group_offset == 0, "offsets should be initialized only once");
970
971 Klass* k = SystemDictionary::Thread_klass();
972 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
973 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
974 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
975 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
976 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
977 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
978 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
979 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
980 // The stackSize field is only present starting in 1.4, so don't go fatal.
981 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
982 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
983 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
984 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
985 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
986 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
987 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
988 vmSymbols::long_signature());
989 }
990
991
992 JavaThread* java_lang_Thread::thread(oop java_thread) {
993 return (JavaThread*)java_thread->address_field(_eetop_offset);
994 }
995
996
997 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
998 java_thread->address_field_put(_eetop_offset, (address)thread);
999 }
1000
1001
1002 oop java_lang_Thread::name(oop java_thread) {
1003 return java_thread->obj_field(_name_offset);
1004 }
1005
1006
1007 void java_lang_Thread::set_name(oop java_thread, oop name) {
1008 java_thread->obj_field_put(_name_offset, name);
1009 }
1010
1011
1012 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1013 return (ThreadPriority)java_thread->int_field(_priority_offset);
1014 }
1015
1016
1017 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1018 java_thread->int_field_put(_priority_offset, priority);
1019 }
1020
1021
1022 oop java_lang_Thread::threadGroup(oop java_thread) {
1023 return java_thread->obj_field(_group_offset);
1024 }
1025
1026
1027 bool java_lang_Thread::is_stillborn(oop java_thread) {
1028 return java_thread->bool_field(_stillborn_offset) != 0;
1029 }
1030
1031
1032 // We never have reason to turn the stillborn bit off
1033 void java_lang_Thread::set_stillborn(oop java_thread) {
1034 java_thread->bool_field_put(_stillborn_offset, true);
1035 }
1036
1037
1038 bool java_lang_Thread::is_alive(oop java_thread) {
1039 JavaThread* thr = java_lang_Thread::thread(java_thread);
1040 return (thr != NULL);
1041 }
1042
1043
1044 bool java_lang_Thread::is_daemon(oop java_thread) {
1045 return java_thread->bool_field(_daemon_offset) != 0;
1046 }
1047
1048
1049 void java_lang_Thread::set_daemon(oop java_thread) {
1050 java_thread->bool_field_put(_daemon_offset, true);
1051 }
1052
1053 oop java_lang_Thread::context_class_loader(oop java_thread) {
1054 return java_thread->obj_field(_contextClassLoader_offset);
1055 }
1056
1057 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1058 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1059 }
1060
1061
1062 jlong java_lang_Thread::stackSize(oop java_thread) {
1063 if (_stackSize_offset > 0) {
1064 return java_thread->long_field(_stackSize_offset);
1065 } else {
1066 return 0;
1067 }
1068 }
1069
1070 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1071 void java_lang_Thread::set_thread_status(oop java_thread,
1072 java_lang_Thread::ThreadStatus status) {
1073 // The threadStatus is only present starting in 1.5
1074 if (_thread_status_offset > 0) {
1075 java_thread->int_field_put(_thread_status_offset, status);
1076 }
1077 }
1078
1079 // Read thread status value from threadStatus field in java.lang.Thread java class.
1080 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1081 assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() ||
1082 JavaThread::current()->thread_state() == _thread_in_vm,
1083 "Java Thread is not running in vm");
1084 // The threadStatus is only present starting in 1.5
1085 if (_thread_status_offset > 0) {
1086 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1087 } else {
1088 // All we can easily figure out is if it is alive, but that is
1089 // enough info for a valid unknown status.
1090 // These aren't restricted to valid set ThreadStatus values, so
1091 // use JVMTI values and cast.
1092 JavaThread* thr = java_lang_Thread::thread(java_thread);
1093 if (thr == NULL) {
1094 // the thread hasn't run yet or is in the process of exiting
1095 return NEW;
1096 }
1097 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1098 }
1099 }
1100
1101
1102 jlong java_lang_Thread::thread_id(oop java_thread) {
1103 // The thread ID field is only present starting in 1.5
1104 if (_tid_offset > 0) {
1105 return java_thread->long_field(_tid_offset);
1106 } else {
1107 return 0;
1108 }
1109 }
1110
1111 oop java_lang_Thread::park_blocker(oop java_thread) {
1112 assert(JDK_Version::current().supports_thread_park_blocker() &&
1113 _park_blocker_offset != 0, "Must support parkBlocker field");
1114
1115 if (_park_blocker_offset > 0) {
1116 return java_thread->obj_field(_park_blocker_offset);
1117 }
1118
1119 return NULL;
1120 }
1121
1122 jlong java_lang_Thread::park_event(oop java_thread) {
1123 if (_park_event_offset > 0) {
1124 return java_thread->long_field(_park_event_offset);
1125 }
1126 return 0;
1127 }
1128
1129 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1130 if (_park_event_offset > 0) {
1131 java_thread->long_field_put(_park_event_offset, ptr);
1132 return true;
1133 }
1134 return false;
1135 }
1136
1137
1138 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1139 assert(_thread_status_offset != 0, "Must have thread status");
1140 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1141 switch (status) {
1142 case NEW : return "NEW";
1143 case RUNNABLE : return "RUNNABLE";
1144 case SLEEPING : return "TIMED_WAITING (sleeping)";
1145 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1146 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1147 case PARKED : return "WAITING (parking)";
1148 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1149 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1150 case TERMINATED : return "TERMINATED";
1151 default : return "UNKNOWN";
1152 };
1153 }
1154 int java_lang_ThreadGroup::_parent_offset = 0;
1155 int java_lang_ThreadGroup::_name_offset = 0;
1156 int java_lang_ThreadGroup::_threads_offset = 0;
1157 int java_lang_ThreadGroup::_groups_offset = 0;
1158 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1159 int java_lang_ThreadGroup::_destroyed_offset = 0;
1160 int java_lang_ThreadGroup::_daemon_offset = 0;
1161 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1162 int java_lang_ThreadGroup::_nthreads_offset = 0;
1163 int java_lang_ThreadGroup::_ngroups_offset = 0;
1164
1165 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1166 assert(java_thread_group->is_oop(), "thread group must be oop");
1167 return java_thread_group->obj_field(_parent_offset);
1168 }
1169
1170 // ("name as oop" accessor is not necessary)
1171
1172 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) {
1173 oop name = java_thread_group->obj_field(_name_offset);
1174 // ThreadGroup.name can be null
1175 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name);
1176 }
1177
1178 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1179 assert(java_thread_group->is_oop(), "thread group must be oop");
1180 return java_thread_group->int_field(_nthreads_offset);
1181 }
1182
1183 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1184 oop threads = java_thread_group->obj_field(_threads_offset);
1185 assert(threads != NULL, "threadgroups should have threads");
1186 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1187 return objArrayOop(threads);
1188 }
1189
1190 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1191 assert(java_thread_group->is_oop(), "thread group must be oop");
1192 return java_thread_group->int_field(_ngroups_offset);
1193 }
1194
1195 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1196 oop groups = java_thread_group->obj_field(_groups_offset);
1197 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1198 return objArrayOop(groups);
1199 }
1200
1201 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1202 assert(java_thread_group->is_oop(), "thread group must be oop");
1203 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1204 }
1205
1206 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1207 assert(java_thread_group->is_oop(), "thread group must be oop");
1208 return java_thread_group->bool_field(_destroyed_offset) != 0;
1209 }
1210
1211 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1212 assert(java_thread_group->is_oop(), "thread group must be oop");
1213 return java_thread_group->bool_field(_daemon_offset) != 0;
1214 }
1215
1216 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1217 assert(java_thread_group->is_oop(), "thread group must be oop");
1218 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1219 }
1220
1221 void java_lang_ThreadGroup::compute_offsets() {
1222 assert(_parent_offset == 0, "offsets should be initialized only once");
1223
1224 Klass* k = SystemDictionary::ThreadGroup_klass();
1225
1226 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1227 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1228 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1229 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1230 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1231 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1232 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1233 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1234 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1235 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1236 }
1237
1238 oop java_lang_Throwable::unassigned_stacktrace() {
1239 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1240 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1241 if (UseCompressedOops) {
1242 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1243 } else {
1244 return oopDesc::load_decode_heap_oop((oop*)addr);
1245 }
1246 }
1247
1248 oop java_lang_Throwable::backtrace(oop throwable) {
1249 return throwable->obj_field_acquire(backtrace_offset);
1250 }
1251
1252
1253 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1254 throwable->release_obj_field_put(backtrace_offset, value);
1255 }
1256
1257
1258 oop java_lang_Throwable::message(oop throwable) {
1259 return throwable->obj_field(detailMessage_offset);
1260 }
1261
1262
1263 oop java_lang_Throwable::message(Handle throwable) {
1264 return throwable->obj_field(detailMessage_offset);
1265 }
1266
1267
1268 // Return Symbol for detailed_message or NULL
1269 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1270 PRESERVE_EXCEPTION_MARK; // Keep original exception
1271 oop detailed_message = java_lang_Throwable::message(throwable);
1272 if (detailed_message != NULL) {
1273 return java_lang_String::as_symbol(detailed_message, THREAD);
1274 }
1275 return NULL;
1276 }
1277
1278 void java_lang_Throwable::set_message(oop throwable, oop value) {
1279 throwable->obj_field_put(detailMessage_offset, value);
1280 }
1281
1282
1283 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1284 throwable->obj_field_put(stackTrace_offset, st_element_array);
1285 }
1286
1287 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1288 set_stacktrace(throwable, NULL);
1289 }
1290
1291
1292 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1293 ResourceMark rm;
1294 Klass* k = throwable->klass();
1295 assert(k != NULL, "just checking");
1296 st->print("%s", k->external_name());
1297 oop msg = message(throwable);
1298 if (msg != NULL) {
1299 st->print(": %s", java_lang_String::as_utf8_string(msg));
1300 }
1301 }
1302
1303
1304 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1305 ResourceMark rm;
1306 Klass* k = throwable->klass();
1307 assert(k != NULL, "just checking");
1308 st->print("%s", k->external_name());
1309 oop msg = message(throwable);
1310 if (msg != NULL) {
1311 st->print(": %s", java_lang_String::as_utf8_string(msg));
1312 }
1313 }
1314
1315 // After this many redefines, the stack trace is unreliable.
1316 const int MAX_VERSION = USHRT_MAX;
1317
1318 // Helper backtrace functions to store bci|version together.
1319 static inline int merge_bci_and_version(int bci, int version) {
1320 // only store u2 for version, checking for overflow.
1321 if (version > USHRT_MAX || version < 0) version = MAX_VERSION;
1322 assert((jushort)bci == bci, "bci should be short");
1323 return build_int_from_shorts(version, bci);
1324 }
1325
1326 static inline int bci_at(unsigned int merged) {
1327 return extract_high_short_from_int(merged);
1328 }
1329 static inline int version_at(unsigned int merged) {
1330 return extract_low_short_from_int(merged);
1331 }
1332
1333 static inline bool version_matches(Method* method, int version) {
1334 assert(version < MAX_VERSION, "version is too big");
1335 return method != NULL && (method->constants()->version() == version);
1336 }
1337
1338 static inline int get_line_number(Method* method, int bci) {
1339 int line_number = 0;
1340 if (method->is_native()) {
1341 // Negative value different from -1 below, enabling Java code in
1342 // class java.lang.StackTraceElement to distinguish "native" from
1343 // "no LineNumberTable". JDK tests for -2.
1344 line_number = -2;
1345 } else {
1346 // Returns -1 if no LineNumberTable, and otherwise actual line number
1347 line_number = method->line_number_from_bci(bci);
1348 if (line_number == -1 && ShowHiddenFrames) {
1349 line_number = bci + 1000000;
1350 }
1351 }
1352 return line_number;
1353 }
1354
1355 // This class provides a simple wrapper over the internal structure of
1356 // exception backtrace to insulate users of the backtrace from needing
1357 // to know what it looks like.
1358 class BacktraceBuilder: public StackObj {
1359 private:
1360 Handle _backtrace;
1361 objArrayOop _head;
1362 typeArrayOop _methods;
1363 typeArrayOop _bcis;
1364 objArrayOop _mirrors;
1365 typeArrayOop _names; // needed to insulate method name against redefinition
1366 int _index;
1367 No_Safepoint_Verifier _nsv;
1368
1369 public:
1370
1371 enum {
1372 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1373 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1374 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1375 trace_names_offset = java_lang_Throwable::trace_names_offset,
1376 trace_next_offset = java_lang_Throwable::trace_next_offset,
1377 trace_size = java_lang_Throwable::trace_size,
1378 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1379 };
1380
1381 // get info out of chunks
1382 static typeArrayOop get_methods(objArrayHandle chunk) {
1383 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1384 assert(methods != NULL, "method array should be initialized in backtrace");
1385 return methods;
1386 }
1387 static typeArrayOop get_bcis(objArrayHandle chunk) {
1388 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1389 assert(bcis != NULL, "bci array should be initialized in backtrace");
1390 return bcis;
1391 }
1392 static objArrayOop get_mirrors(objArrayHandle chunk) {
1393 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1394 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1395 return mirrors;
1396 }
1397 static typeArrayOop get_names(objArrayHandle chunk) {
1398 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
1399 assert(names != NULL, "names array should be initialized in backtrace");
1400 return names;
1401 }
1402
1403 // constructor for new backtrace
1404 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _names(NULL) {
1405 expand(CHECK);
1406 _backtrace = _head;
1407 _index = 0;
1408 }
1409
1410 BacktraceBuilder(objArrayHandle backtrace) {
1411 _methods = get_methods(backtrace);
1412 _bcis = get_bcis(backtrace);
1413 _mirrors = get_mirrors(backtrace);
1414 _names = get_names(backtrace);
1415 assert(_methods->length() == _bcis->length() &&
1416 _methods->length() == _mirrors->length(),
1417 "method and source information arrays should match");
1418
1419 // head is the preallocated backtrace
1420 _backtrace = _head = backtrace();
1421 _index = 0;
1422 }
1423
1424 void expand(TRAPS) {
1425 objArrayHandle old_head(THREAD, _head);
1426 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1427
1428 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1429 objArrayHandle new_head(THREAD, head);
1430
1431 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1432 typeArrayHandle new_methods(THREAD, methods);
1433
1434 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1435 typeArrayHandle new_bcis(THREAD, bcis);
1436
1437 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1438 objArrayHandle new_mirrors(THREAD, mirrors);
1439
1440 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
1441 typeArrayHandle new_names(THREAD, names);
1442
1443 if (!old_head.is_null()) {
1444 old_head->obj_at_put(trace_next_offset, new_head());
1445 }
1446 new_head->obj_at_put(trace_methods_offset, new_methods());
1447 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1448 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1449 new_head->obj_at_put(trace_names_offset, new_names());
1450
1451 _head = new_head();
1452 _methods = new_methods();
1453 _bcis = new_bcis();
1454 _mirrors = new_mirrors();
1455 _names = new_names();
1456 _index = 0;
1457 }
1458
1459 oop backtrace() {
1460 return _backtrace();
1461 }
1462
1463 inline void push(Method* method, int bci, TRAPS) {
1464 // Smear the -1 bci to 0 since the array only holds unsigned
1465 // shorts. The later line number lookup would just smear the -1
1466 // to a 0 even if it could be recorded.
1467 if (bci == SynchronizationEntryBCI) bci = 0;
1468
1469 if (_index >= trace_chunk_size) {
1470 methodHandle mhandle(THREAD, method);
1471 expand(CHECK);
1472 method = mhandle();
1473 }
1474
1475 _methods->short_at_put(_index, method->orig_method_idnum());
1476 _bcis->int_at_put(_index, merge_bci_and_version(bci, method->constants()->version()));
1477 // We can store Symbol* in the backtrace without additional refcounting because the
1478 // Symbol* for the name is kept alive because the class containing the method is kept
1479 // alive via. the mirror. Since redefinition does not allow deleting methods, the new
1480 // class will also have this name, somewhere, maybe not at the same constant pool index.
1481 _names->symbol_at_put(_index, method->name());
1482
1483 // We need to save the mirrors in the backtrace to keep the class
1484 // from being unloaded while we still have this stack trace.
1485 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1486 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1487 _index++;
1488 }
1489
1490 };
1491
1492 Symbol* get_source_file_name(InstanceKlass* holder, int version) {
1493 // Find the specific ik version that contains this source_file_name_index
1494 // via the previous versions list, but use the current version's
1495 // constant pool to look it up. The previous version's index has been
1496 // merged for the current constant pool.
1497 InstanceKlass* ik = holder->get_klass_version(version);
1498 // This version has been cleaned up.
1499 if (ik == NULL) return NULL;
1500 int source_file_name_index = ik->source_file_name_index();
1501 return (source_file_name_index == 0) ?
1502 (Symbol*)NULL : holder->constants()->symbol_at(source_file_name_index);
1503 }
1504
1505 // Print stack trace element to resource allocated buffer
1506 char* print_stack_element_to_buffer(Handle mirror, int method_id, int version, int bci, Symbol* name) {
1507
1508 // Get strings and string lengths
1509 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1510 const char* klass_name = holder->external_name();
1511 int buf_len = (int)strlen(klass_name);
1512
1513 Method* method = holder->method_with_orig_idnum(method_id, version);
1514
1515 char* method_name = name->as_C_string();
1516 buf_len += (int)strlen(method_name);
1517
1518 char* source_file_name = NULL;
1519 Symbol* source = get_source_file_name(holder, version);
1520 if (source != NULL) {
1521 source_file_name = source->as_C_string();
1522 buf_len += (int)strlen(source_file_name);
1523 }
1524
1525 // Allocate temporary buffer with extra space for formatting and line number
1526 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1527
1528 // Print stack trace line in buffer
1529 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1530
1531 if (!version_matches(method, version)) {
1532 strcat(buf, "(Redefined)");
1533 } else {
1534 int line_number = get_line_number(method, bci);
1535 if (line_number == -2) {
1536 strcat(buf, "(Native Method)");
1537 } else {
1538 if (source_file_name != NULL && (line_number != -1)) {
1539 // Sourcename and linenumber
1540 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1541 } else if (source_file_name != NULL) {
1542 // Just sourcename
1543 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1544 } else {
1545 // Neither sourcename nor linenumber
1546 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1547 }
1548 nmethod* nm = method->code();
1549 if (WizardMode && nm != NULL) {
1550 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1551 }
1552 }
1553 }
1554
1555 return buf;
1556 }
1557
1558 void print_stack_element_internal(outputStream *st, Handle mirror,
1559 int method_id, int version, int bci, Symbol* name) {
1560 ResourceMark rm;
1561 char* buf = print_stack_element_to_buffer(mirror, method_id, version, bci, name);
1562 st->print_cr("%s", buf);
1563 }
1564
1565 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
1566 Handle mirror = method->method_holder()->java_mirror();
1567 int method_id = method->orig_method_idnum();
1568 int version = method->constants()->version();
1569 Symbol *name = method->name();
1570 print_stack_element_internal(st, mirror, method_id, version, bci, name);
1571 }
1572
1573
1574 // Currently used only for exceptions occurring during startup
1575 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1576 Thread *THREAD = Thread::current();
1577 Handle h_throwable(THREAD, throwable);
1578 while (h_throwable.not_null()) {
1579 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1580 if (result.is_null()) {
1581 st->print_raw_cr("\t<<no stack trace available>>");
1582 return;
1583 }
1584
1585 while (result.not_null()) {
1586
1587 // Get method id, bci, version and mirror from chunk
1588 typeArrayHandle methods (THREAD, BacktraceBuilder::get_methods(result));
1589 typeArrayHandle bcis (THREAD, BacktraceBuilder::get_bcis(result));
1590 objArrayHandle mirrors (THREAD, BacktraceBuilder::get_mirrors(result));
1591 typeArrayHandle names (THREAD, BacktraceBuilder::get_names(result));
1592
1593 int length = methods()->length();
1594 for (int index = 0; index < length; index++) {
1595 Handle mirror(THREAD, mirrors->obj_at(index));
1596 // NULL mirror means end of stack trace
1597 if (mirror.is_null()) goto handle_cause;
1598 int method = methods->short_at(index);
1599 int version = version_at(bcis->int_at(index));
1600 int bci = bci_at(bcis->int_at(index));
1601 Symbol* name = names->symbol_at(index);
1602 print_stack_element_internal(st, mirror, method, version, bci, name);
1603 }
1604 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1605 }
1606 handle_cause:
1607 {
1608 EXCEPTION_MARK;
1609 JavaValue cause(T_OBJECT);
1610 JavaCalls::call_virtual(&cause,
1611 h_throwable,
1612 KlassHandle(THREAD, h_throwable->klass()),
1613 vmSymbols::getCause_name(),
1614 vmSymbols::void_throwable_signature(),
1615 THREAD);
1616 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1617 if (HAS_PENDING_EXCEPTION) {
1618 CLEAR_PENDING_EXCEPTION;
1619 h_throwable = Handle();
1620 } else {
1621 h_throwable = Handle(THREAD, (oop) cause.get_jobject());
1622 if (h_throwable.not_null()) {
1623 st->print("Caused by: ");
1624 print(h_throwable, st);
1625 st->cr();
1626 }
1627 }
1628 }
1629 }
1630 }
1631
1632 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
1633 if (!StackTraceInThrowable) return;
1634 ResourceMark rm(THREAD);
1635
1636 // Start out by clearing the backtrace for this object, in case the VM
1637 // runs out of memory while allocating the stack trace
1638 set_backtrace(throwable(), NULL);
1639 // Clear lazily constructed Java level stacktrace if refilling occurs
1640 // This is unnecessary in 1.7+ but harmless
1641 clear_stacktrace(throwable());
1642
1643 int max_depth = MaxJavaStackTraceDepth;
1644 JavaThread* thread = (JavaThread*)THREAD;
1645 BacktraceBuilder bt(CHECK);
1646
1647 // If there is no Java frame just return the method that was being called
1648 // with bci 0
1649 if (!thread->has_last_Java_frame()) {
1650 if (max_depth >= 1 && method() != NULL) {
1651 bt.push(method(), 0, CHECK);
1652 set_backtrace(throwable(), bt.backtrace());
1653 }
1654 return;
1655 }
1656
1657 // Instead of using vframe directly, this version of fill_in_stack_trace
1658 // basically handles everything by hand. This significantly improved the
1659 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1660 // See bug 6333838 for more details.
1661 // The "ASSERT" here is to verify this method generates the exactly same stack
1662 // trace as utilizing vframe.
1663 #ifdef ASSERT
1664 vframeStream st(thread);
1665 methodHandle st_method(THREAD, st.method());
1666 #endif
1667 int total_count = 0;
1668 RegisterMap map(thread, false);
1669 int decode_offset = 0;
1670 nmethod* nm = NULL;
1671 bool skip_fillInStackTrace_check = false;
1672 bool skip_throwableInit_check = false;
1673 bool skip_hidden = !ShowHiddenFrames;
1674
1675 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1676 Method* method = NULL;
1677 int bci = 0;
1678
1679 // Compiled java method case.
1680 if (decode_offset != 0) {
1681 DebugInfoReadStream stream(nm, decode_offset);
1682 decode_offset = stream.read_int();
1683 method = (Method*)nm->metadata_at(stream.read_int());
1684 bci = stream.read_bci();
1685 } else {
1686 if (fr.is_first_frame()) break;
1687 address pc = fr.pc();
1688 if (fr.is_interpreted_frame()) {
1689 address bcp = fr.interpreter_frame_bcp();
1690 method = fr.interpreter_frame_method();
1691 bci = method->bci_from(bcp);
1692 fr = fr.sender(&map);
1693 } else {
1694 CodeBlob* cb = fr.cb();
1695 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1696 // but non nmethod
1697 fr = fr.sender(&map);
1698 if (cb == NULL || !cb->is_nmethod()) {
1699 continue;
1700 }
1701 nm = (nmethod*)cb;
1702 if (nm->method()->is_native()) {
1703 method = nm->method();
1704 bci = 0;
1705 } else {
1706 PcDesc* pd = nm->pc_desc_at(pc);
1707 decode_offset = pd->scope_decode_offset();
1708 // if decode_offset is not equal to 0, it will execute the
1709 // "compiled java method case" at the beginning of the loop.
1710 continue;
1711 }
1712 }
1713 }
1714 #ifdef ASSERT
1715 assert(st_method() == method && st.bci() == bci,
1716 "Wrong stack trace");
1717 st.next();
1718 // vframeStream::method isn't GC-safe so store off a copy
1719 // of the Method* in case we GC.
1720 if (!st.at_end()) {
1721 st_method = st.method();
1722 }
1723 #endif
1724
1725 // the format of the stacktrace will be:
1726 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1727 // - 0 or more <init> methods for the exception class (skipped)
1728 // - rest of the stack
1729
1730 if (!skip_fillInStackTrace_check) {
1731 if (method->name() == vmSymbols::fillInStackTrace_name() &&
1732 throwable->is_a(method->method_holder())) {
1733 continue;
1734 }
1735 else {
1736 skip_fillInStackTrace_check = true; // gone past them all
1737 }
1738 }
1739 if (!skip_throwableInit_check) {
1740 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1741
1742 // skip <init> methods of the exception class and superclasses
1743 // This is simlar to classic VM.
1744 if (method->name() == vmSymbols::object_initializer_name() &&
1745 throwable->is_a(method->method_holder())) {
1746 continue;
1747 } else {
1748 // there are none or we've seen them all - either way stop checking
1749 skip_throwableInit_check = true;
1750 }
1751 }
1752 if (method->is_hidden()) {
1753 if (skip_hidden) continue;
1754 }
1755 bt.push(method, bci, CHECK);
1756 total_count++;
1757 }
1758
1759 // Put completed stack trace into throwable object
1760 set_backtrace(throwable(), bt.backtrace());
1761 }
1762
1763 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
1764 // No-op if stack trace is disabled
1765 if (!StackTraceInThrowable) {
1766 return;
1767 }
1768
1769 // Disable stack traces for some preallocated out of memory errors
1770 if (!Universe::should_fill_in_stack_trace(throwable)) {
1771 return;
1772 }
1773
1774 PRESERVE_EXCEPTION_MARK;
1775
1776 JavaThread* thread = JavaThread::active();
1777 fill_in_stack_trace(throwable, method, thread);
1778 // ignore exceptions thrown during stack trace filling
1779 CLEAR_PENDING_EXCEPTION;
1780 }
1781
1782 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1783 // Allocate stack trace - backtrace is created but not filled in
1784
1785 // No-op if stack trace is disabled
1786 if (!StackTraceInThrowable) return;
1787 BacktraceBuilder bt(CHECK); // creates a backtrace
1788 set_backtrace(throwable(), bt.backtrace());
1789 }
1790
1791
1792 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
1793 // Fill in stack trace into preallocated backtrace (no GC)
1794
1795 // No-op if stack trace is disabled
1796 if (!StackTraceInThrowable) return;
1797
1798 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
1799
1800 JavaThread* THREAD = JavaThread::current();
1801
1802 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
1803 assert(backtrace.not_null(), "backtrace should have been preallocated");
1804
1805 ResourceMark rm(THREAD);
1806 vframeStream st(THREAD);
1807
1808 BacktraceBuilder bt(backtrace);
1809
1810 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
1811 // methods as preallocated errors aren't created by "java" code.
1812
1813 // fill in as much stack trace as possible
1814 typeArrayOop methods = BacktraceBuilder::get_methods(backtrace);
1815 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
1816 int chunk_count = 0;
1817
1818 for (;!st.at_end(); st.next()) {
1819 bt.push(st.method(), st.bci(), CHECK);
1820 chunk_count++;
1821
1822 // Bail-out for deep stacks
1823 if (chunk_count >= max_chunks) break;
1824 }
1825
1826 // We support the Throwable immutability protocol defined for Java 7.
1827 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
1828 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
1829 }
1830
1831
1832 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
1833 if (throwable == NULL) {
1834 THROW_0(vmSymbols::java_lang_NullPointerException());
1835 }
1836 objArrayOop chunk = objArrayOop(backtrace(throwable));
1837 int depth = 0;
1838 if (chunk != NULL) {
1839 // Iterate over chunks and count full ones
1840 while (true) {
1841 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
1842 if (next == NULL) break;
1843 depth += trace_chunk_size;
1844 chunk = next;
1845 }
1846 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
1847 // Count element in remaining partial chunk. NULL value for mirror
1848 // marks the end of the stack trace elements that are saved.
1849 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1850 assert(mirrors != NULL, "sanity check");
1851 for (int i = 0; i < mirrors->length(); i++) {
1852 if (mirrors->obj_at(i) == NULL) break;
1853 depth++;
1854 }
1855 }
1856 return depth;
1857 }
1858
1859
1860 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1861 if (throwable == NULL) {
1862 THROW_0(vmSymbols::java_lang_NullPointerException());
1863 }
1864 if (index < 0) {
1865 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1866 }
1867 // Compute how many chunks to skip and index into actual chunk
1868 objArrayOop chunk = objArrayOop(backtrace(throwable));
1869 int skip_chunks = index / trace_chunk_size;
1870 int chunk_index = index % trace_chunk_size;
1871 while (chunk != NULL && skip_chunks > 0) {
1872 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1873 skip_chunks--;
1874 }
1875 if (chunk == NULL) {
1876 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1877 }
1878 // Get method id, bci, version, mirror and name from chunk
1879 typeArrayOop methods = BacktraceBuilder::get_methods(chunk);
1880 typeArrayOop bcis = BacktraceBuilder::get_bcis(chunk);
1881 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1882 typeArrayOop names = BacktraceBuilder::get_names(chunk);
1883
1884 assert(methods != NULL && bcis != NULL && mirrors != NULL, "sanity check");
1885
1886 int method = methods->short_at(chunk_index);
1887 int version = version_at(bcis->int_at(chunk_index));
1888 int bci = bci_at(bcis->int_at(chunk_index));
1889 Symbol* name = names->symbol_at(chunk_index);
1890 Handle mirror(THREAD, mirrors->obj_at(chunk_index));
1891
1892 // Chunk can be partial full
1893 if (mirror.is_null()) {
1894 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1895 }
1896 oop element = java_lang_StackTraceElement::create(mirror, method, version, bci, name, CHECK_0);
1897 return element;
1898 }
1899
1900 oop java_lang_StackTraceElement::create(Handle mirror, int method_id,
1901 int version, int bci, Symbol* name, TRAPS) {
1902 // Allocate java.lang.StackTraceElement instance
1903 Klass* k = SystemDictionary::StackTraceElement_klass();
1904 assert(k != NULL, "must be loaded in 1.4+");
1905 instanceKlassHandle ik (THREAD, k);
1906 if (ik->should_be_initialized()) {
1907 ik->initialize(CHECK_0);
1908 }
1909
1910 Handle element = ik->allocate_instance_handle(CHECK_0);
1911 // Fill in class name
1912 ResourceMark rm(THREAD);
1913 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1914 const char* str = holder->external_name();
1915 oop classname = StringTable::intern((char*) str, CHECK_0);
1916 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1917
1918
1919 // Fill in method name
1920 oop methodname = StringTable::intern(name, CHECK_0);
1921 java_lang_StackTraceElement::set_methodName(element(), methodname);
1922
1923 // The method can be NULL if the requested class version is gone
1924 Method* method = holder->method_with_orig_idnum(method_id, version);
1925 if (!version_matches(method, version)) {
1926 // The method was redefined, accurate line number information isn't available
1927 java_lang_StackTraceElement::set_fileName(element(), NULL);
1928 java_lang_StackTraceElement::set_lineNumber(element(), -1);
1929 } else {
1930 // Fill in source file name and line number.
1931 Symbol* source = get_source_file_name(holder, version);
1932 if (ShowHiddenFrames && source == NULL)
1933 source = vmSymbols::unknown_class_name();
1934 oop filename = StringTable::intern(source, CHECK_0);
1935 java_lang_StackTraceElement::set_fileName(element(), filename);
1936
1937 int line_number = get_line_number(method, bci);
1938 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1939 }
1940 return element();
1941 }
1942
1943 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
1944 Handle mirror (THREAD, method->method_holder()->java_mirror());
1945 int method_id = method->orig_method_idnum();
1946 Symbol* name = method->name();
1947 return create(mirror, method_id, method->constants()->version(), bci, name, THREAD);
1948 }
1949
1950 void java_lang_reflect_AccessibleObject::compute_offsets() {
1951 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1952 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1953 }
1954
1955 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1956 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1957 return (jboolean) reflect->bool_field(override_offset);
1958 }
1959
1960 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1961 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1962 reflect->bool_field_put(override_offset, (int) value);
1963 }
1964
1965 void java_lang_reflect_Method::compute_offsets() {
1966 Klass* k = SystemDictionary::reflect_Method_klass();
1967 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
1968 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1969 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
1970 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
1971 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
1972 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
1973 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
1974 // The generic signature and annotations fields are only present in 1.5
1975 signature_offset = -1;
1976 annotations_offset = -1;
1977 parameter_annotations_offset = -1;
1978 annotation_default_offset = -1;
1979 type_annotations_offset = -1;
1980 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
1981 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
1982 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
1983 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
1984 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
1985 }
1986
1987 Handle java_lang_reflect_Method::create(TRAPS) {
1988 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1989 Klass* klass = SystemDictionary::reflect_Method_klass();
1990 // This class is eagerly initialized during VM initialization, since we keep a refence
1991 // to one of the methods
1992 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
1993 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
1994 }
1995
1996 oop java_lang_reflect_Method::clazz(oop reflect) {
1997 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1998 return reflect->obj_field(clazz_offset);
1999 }
2000
2001 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2002 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2003 reflect->obj_field_put(clazz_offset, value);
2004 }
2005
2006 int java_lang_reflect_Method::slot(oop reflect) {
2007 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2008 return reflect->int_field(slot_offset);
2009 }
2010
2011 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2012 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2013 reflect->int_field_put(slot_offset, value);
2014 }
2015
2016 oop java_lang_reflect_Method::name(oop method) {
2017 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2018 return method->obj_field(name_offset);
2019 }
2020
2021 void java_lang_reflect_Method::set_name(oop method, oop value) {
2022 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2023 method->obj_field_put(name_offset, value);
2024 }
2025
2026 oop java_lang_reflect_Method::return_type(oop method) {
2027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2028 return method->obj_field(returnType_offset);
2029 }
2030
2031 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2032 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2033 method->obj_field_put(returnType_offset, value);
2034 }
2035
2036 oop java_lang_reflect_Method::parameter_types(oop method) {
2037 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2038 return method->obj_field(parameterTypes_offset);
2039 }
2040
2041 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2042 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2043 method->obj_field_put(parameterTypes_offset, value);
2044 }
2045
2046 oop java_lang_reflect_Method::exception_types(oop method) {
2047 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2048 return method->obj_field(exceptionTypes_offset);
2049 }
2050
2051 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2052 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2053 method->obj_field_put(exceptionTypes_offset, value);
2054 }
2055
2056 int java_lang_reflect_Method::modifiers(oop method) {
2057 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2058 return method->int_field(modifiers_offset);
2059 }
2060
2061 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2062 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2063 method->int_field_put(modifiers_offset, value);
2064 }
2065
2066 bool java_lang_reflect_Method::has_signature_field() {
2067 return (signature_offset >= 0);
2068 }
2069
2070 oop java_lang_reflect_Method::signature(oop method) {
2071 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2072 assert(has_signature_field(), "signature field must be present");
2073 return method->obj_field(signature_offset);
2074 }
2075
2076 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2077 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2078 assert(has_signature_field(), "signature field must be present");
2079 method->obj_field_put(signature_offset, value);
2080 }
2081
2082 bool java_lang_reflect_Method::has_annotations_field() {
2083 return (annotations_offset >= 0);
2084 }
2085
2086 oop java_lang_reflect_Method::annotations(oop method) {
2087 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2088 assert(has_annotations_field(), "annotations field must be present");
2089 return method->obj_field(annotations_offset);
2090 }
2091
2092 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2093 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2094 assert(has_annotations_field(), "annotations field must be present");
2095 method->obj_field_put(annotations_offset, value);
2096 }
2097
2098 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2099 return (parameter_annotations_offset >= 0);
2100 }
2101
2102 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2103 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2104 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2105 return method->obj_field(parameter_annotations_offset);
2106 }
2107
2108 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2109 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2110 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2111 method->obj_field_put(parameter_annotations_offset, value);
2112 }
2113
2114 bool java_lang_reflect_Method::has_annotation_default_field() {
2115 return (annotation_default_offset >= 0);
2116 }
2117
2118 oop java_lang_reflect_Method::annotation_default(oop method) {
2119 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2120 assert(has_annotation_default_field(), "annotation default field must be present");
2121 return method->obj_field(annotation_default_offset);
2122 }
2123
2124 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2125 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2126 assert(has_annotation_default_field(), "annotation default field must be present");
2127 method->obj_field_put(annotation_default_offset, value);
2128 }
2129
2130 bool java_lang_reflect_Method::has_type_annotations_field() {
2131 return (type_annotations_offset >= 0);
2132 }
2133
2134 oop java_lang_reflect_Method::type_annotations(oop method) {
2135 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2136 assert(has_type_annotations_field(), "type_annotations field must be present");
2137 return method->obj_field(type_annotations_offset);
2138 }
2139
2140 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2141 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2142 assert(has_type_annotations_field(), "type_annotations field must be present");
2143 method->obj_field_put(type_annotations_offset, value);
2144 }
2145
2146 void java_lang_reflect_Constructor::compute_offsets() {
2147 Klass* k = SystemDictionary::reflect_Constructor_klass();
2148 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2149 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2150 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2151 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2152 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2153 // The generic signature and annotations fields are only present in 1.5
2154 signature_offset = -1;
2155 annotations_offset = -1;
2156 parameter_annotations_offset = -1;
2157 type_annotations_offset = -1;
2158 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2159 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2160 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2161 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2162 }
2163
2164 Handle java_lang_reflect_Constructor::create(TRAPS) {
2165 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2166 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2167 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2168 instanceKlassHandle klass (THREAD, k);
2169 // Ensure it is initialized
2170 klass->initialize(CHECK_NH);
2171 return klass->allocate_instance_handle(THREAD);
2172 }
2173
2174 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2175 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2176 return reflect->obj_field(clazz_offset);
2177 }
2178
2179 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2180 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2181 reflect->obj_field_put(clazz_offset, value);
2182 }
2183
2184 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2185 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2186 return constructor->obj_field(parameterTypes_offset);
2187 }
2188
2189 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2190 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2191 constructor->obj_field_put(parameterTypes_offset, value);
2192 }
2193
2194 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2195 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2196 return constructor->obj_field(exceptionTypes_offset);
2197 }
2198
2199 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2200 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2201 constructor->obj_field_put(exceptionTypes_offset, value);
2202 }
2203
2204 int java_lang_reflect_Constructor::slot(oop reflect) {
2205 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2206 return reflect->int_field(slot_offset);
2207 }
2208
2209 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2210 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2211 reflect->int_field_put(slot_offset, value);
2212 }
2213
2214 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2215 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2216 return constructor->int_field(modifiers_offset);
2217 }
2218
2219 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2220 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2221 constructor->int_field_put(modifiers_offset, value);
2222 }
2223
2224 bool java_lang_reflect_Constructor::has_signature_field() {
2225 return (signature_offset >= 0);
2226 }
2227
2228 oop java_lang_reflect_Constructor::signature(oop constructor) {
2229 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2230 assert(has_signature_field(), "signature field must be present");
2231 return constructor->obj_field(signature_offset);
2232 }
2233
2234 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2235 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2236 assert(has_signature_field(), "signature field must be present");
2237 constructor->obj_field_put(signature_offset, value);
2238 }
2239
2240 bool java_lang_reflect_Constructor::has_annotations_field() {
2241 return (annotations_offset >= 0);
2242 }
2243
2244 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2245 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2246 assert(has_annotations_field(), "annotations field must be present");
2247 return constructor->obj_field(annotations_offset);
2248 }
2249
2250 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2251 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2252 assert(has_annotations_field(), "annotations field must be present");
2253 constructor->obj_field_put(annotations_offset, value);
2254 }
2255
2256 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2257 return (parameter_annotations_offset >= 0);
2258 }
2259
2260 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2261 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2262 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2263 return method->obj_field(parameter_annotations_offset);
2264 }
2265
2266 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2267 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2268 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2269 method->obj_field_put(parameter_annotations_offset, value);
2270 }
2271
2272 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2273 return (type_annotations_offset >= 0);
2274 }
2275
2276 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2277 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2278 assert(has_type_annotations_field(), "type_annotations field must be present");
2279 return constructor->obj_field(type_annotations_offset);
2280 }
2281
2282 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2283 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2284 assert(has_type_annotations_field(), "type_annotations field must be present");
2285 constructor->obj_field_put(type_annotations_offset, value);
2286 }
2287
2288 void java_lang_reflect_Field::compute_offsets() {
2289 Klass* k = SystemDictionary::reflect_Field_klass();
2290 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2291 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2292 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2293 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2294 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2295 // The generic signature and annotations fields are only present in 1.5
2296 signature_offset = -1;
2297 annotations_offset = -1;
2298 type_annotations_offset = -1;
2299 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2300 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2301 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2302 }
2303
2304 Handle java_lang_reflect_Field::create(TRAPS) {
2305 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2306 Symbol* name = vmSymbols::java_lang_reflect_Field();
2307 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2308 instanceKlassHandle klass (THREAD, k);
2309 // Ensure it is initialized
2310 klass->initialize(CHECK_NH);
2311 return klass->allocate_instance_handle(THREAD);
2312 }
2313
2314 oop java_lang_reflect_Field::clazz(oop reflect) {
2315 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2316 return reflect->obj_field(clazz_offset);
2317 }
2318
2319 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2320 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2321 reflect->obj_field_put(clazz_offset, value);
2322 }
2323
2324 oop java_lang_reflect_Field::name(oop field) {
2325 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2326 return field->obj_field(name_offset);
2327 }
2328
2329 void java_lang_reflect_Field::set_name(oop field, oop value) {
2330 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2331 field->obj_field_put(name_offset, value);
2332 }
2333
2334 oop java_lang_reflect_Field::type(oop field) {
2335 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2336 return field->obj_field(type_offset);
2337 }
2338
2339 void java_lang_reflect_Field::set_type(oop field, oop value) {
2340 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2341 field->obj_field_put(type_offset, value);
2342 }
2343
2344 int java_lang_reflect_Field::slot(oop reflect) {
2345 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2346 return reflect->int_field(slot_offset);
2347 }
2348
2349 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2350 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2351 reflect->int_field_put(slot_offset, value);
2352 }
2353
2354 int java_lang_reflect_Field::modifiers(oop field) {
2355 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2356 return field->int_field(modifiers_offset);
2357 }
2358
2359 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2360 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2361 field->int_field_put(modifiers_offset, value);
2362 }
2363
2364 bool java_lang_reflect_Field::has_signature_field() {
2365 return (signature_offset >= 0);
2366 }
2367
2368 oop java_lang_reflect_Field::signature(oop field) {
2369 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2370 assert(has_signature_field(), "signature field must be present");
2371 return field->obj_field(signature_offset);
2372 }
2373
2374 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2375 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2376 assert(has_signature_field(), "signature field must be present");
2377 field->obj_field_put(signature_offset, value);
2378 }
2379
2380 bool java_lang_reflect_Field::has_annotations_field() {
2381 return (annotations_offset >= 0);
2382 }
2383
2384 oop java_lang_reflect_Field::annotations(oop field) {
2385 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2386 assert(has_annotations_field(), "annotations field must be present");
2387 return field->obj_field(annotations_offset);
2388 }
2389
2390 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2391 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2392 assert(has_annotations_field(), "annotations field must be present");
2393 field->obj_field_put(annotations_offset, value);
2394 }
2395
2396 bool java_lang_reflect_Field::has_type_annotations_field() {
2397 return (type_annotations_offset >= 0);
2398 }
2399
2400 oop java_lang_reflect_Field::type_annotations(oop field) {
2401 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2402 assert(has_type_annotations_field(), "type_annotations field must be present");
2403 return field->obj_field(type_annotations_offset);
2404 }
2405
2406 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2407 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2408 assert(has_type_annotations_field(), "type_annotations field must be present");
2409 field->obj_field_put(type_annotations_offset, value);
2410 }
2411
2412 void sun_reflect_ConstantPool::compute_offsets() {
2413 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2414 // This null test can be removed post beta
2415 if (k != NULL) {
2416 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2417 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2418 }
2419 }
2420
2421 void java_lang_reflect_Parameter::compute_offsets() {
2422 Klass* k = SystemDictionary::reflect_Parameter_klass();
2423 if(NULL != k) {
2424 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2425 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2426 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2427 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2428 }
2429 }
2430
2431 Handle java_lang_reflect_Parameter::create(TRAPS) {
2432 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2433 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2434 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2435 instanceKlassHandle klass (THREAD, k);
2436 // Ensure it is initialized
2437 klass->initialize(CHECK_NH);
2438 return klass->allocate_instance_handle(THREAD);
2439 }
2440
2441 oop java_lang_reflect_Parameter::name(oop param) {
2442 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2443 return param->obj_field(name_offset);
2444 }
2445
2446 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2447 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2448 param->obj_field_put(name_offset, value);
2449 }
2450
2451 int java_lang_reflect_Parameter::modifiers(oop param) {
2452 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2453 return param->int_field(modifiers_offset);
2454 }
2455
2456 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2457 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2458 param->int_field_put(modifiers_offset, value);
2459 }
2460
2461 int java_lang_reflect_Parameter::index(oop param) {
2462 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2463 return param->int_field(index_offset);
2464 }
2465
2466 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2467 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2468 param->int_field_put(index_offset, value);
2469 }
2470
2471 oop java_lang_reflect_Parameter::executable(oop param) {
2472 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2473 return param->obj_field(executable_offset);
2474 }
2475
2476 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2477 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2478 param->obj_field_put(executable_offset, value);
2479 }
2480
2481
2482 Handle sun_reflect_ConstantPool::create(TRAPS) {
2483 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2484 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2485 instanceKlassHandle klass (THREAD, k);
2486 // Ensure it is initialized
2487 klass->initialize(CHECK_NH);
2488 return klass->allocate_instance_handle(THREAD);
2489 }
2490
2491
2492 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2493 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2494 oop mirror = value->pool_holder()->java_mirror();
2495 // Save the mirror to get back the constant pool.
2496 reflect->obj_field_put(_oop_offset, mirror);
2497 }
2498
2499 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2500 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2501
2502 oop mirror = reflect->obj_field(_oop_offset);
2503 Klass* k = java_lang_Class::as_Klass(mirror);
2504 assert(k->is_instance_klass(), "Must be");
2505
2506 // Get the constant pool back from the klass. Since class redefinition
2507 // merges the new constant pool into the old, this is essentially the
2508 // same constant pool as the original. If constant pool merging is
2509 // no longer done in the future, this will have to change to save
2510 // the original.
2511 return InstanceKlass::cast(k)->constants();
2512 }
2513
2514 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2515 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2516 // This null test can be removed post beta
2517 if (k != NULL) {
2518 compute_offset(_base_offset, k,
2519 vmSymbols::base_name(), vmSymbols::object_signature());
2520 }
2521 }
2522
2523 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2524 Klass* k = SystemDictionary::box_klass(type);
2525 if (k == NULL) return NULL;
2526 instanceKlassHandle h (THREAD, k);
2527 if (!h->is_initialized()) h->initialize(CHECK_0);
2528 return h->allocate_instance(THREAD);
2529 }
2530
2531
2532 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2533 oop box = initialize_and_allocate(type, CHECK_0);
2534 if (box == NULL) return NULL;
2535 switch (type) {
2536 case T_BOOLEAN:
2537 box->bool_field_put(value_offset, value->z);
2538 break;
2539 case T_CHAR:
2540 box->char_field_put(value_offset, value->c);
2541 break;
2542 case T_FLOAT:
2543 box->float_field_put(value_offset, value->f);
2544 break;
2545 case T_DOUBLE:
2546 box->double_field_put(long_value_offset, value->d);
2547 break;
2548 case T_BYTE:
2549 box->byte_field_put(value_offset, value->b);
2550 break;
2551 case T_SHORT:
2552 box->short_field_put(value_offset, value->s);
2553 break;
2554 case T_INT:
2555 box->int_field_put(value_offset, value->i);
2556 break;
2557 case T_LONG:
2558 box->long_field_put(long_value_offset, value->j);
2559 break;
2560 default:
2561 return NULL;
2562 }
2563 return box;
2564 }
2565
2566
2567 BasicType java_lang_boxing_object::basic_type(oop box) {
2568 if (box == NULL) return T_ILLEGAL;
2569 BasicType type = SystemDictionary::box_klass_type(box->klass());
2570 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2571 return T_ILLEGAL;
2572 return type;
2573 }
2574
2575
2576 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2577 BasicType type = SystemDictionary::box_klass_type(box->klass());
2578 switch (type) {
2579 case T_BOOLEAN:
2580 value->z = box->bool_field(value_offset);
2581 break;
2582 case T_CHAR:
2583 value->c = box->char_field(value_offset);
2584 break;
2585 case T_FLOAT:
2586 value->f = box->float_field(value_offset);
2587 break;
2588 case T_DOUBLE:
2589 value->d = box->double_field(long_value_offset);
2590 break;
2591 case T_BYTE:
2592 value->b = box->byte_field(value_offset);
2593 break;
2594 case T_SHORT:
2595 value->s = box->short_field(value_offset);
2596 break;
2597 case T_INT:
2598 value->i = box->int_field(value_offset);
2599 break;
2600 case T_LONG:
2601 value->j = box->long_field(long_value_offset);
2602 break;
2603 default:
2604 return T_ILLEGAL;
2605 } // end switch
2606 return type;
2607 }
2608
2609
2610 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2611 BasicType type = SystemDictionary::box_klass_type(box->klass());
2612 switch (type) {
2613 case T_BOOLEAN:
2614 box->bool_field_put(value_offset, value->z);
2615 break;
2616 case T_CHAR:
2617 box->char_field_put(value_offset, value->c);
2618 break;
2619 case T_FLOAT:
2620 box->float_field_put(value_offset, value->f);
2621 break;
2622 case T_DOUBLE:
2623 box->double_field_put(long_value_offset, value->d);
2624 break;
2625 case T_BYTE:
2626 box->byte_field_put(value_offset, value->b);
2627 break;
2628 case T_SHORT:
2629 box->short_field_put(value_offset, value->s);
2630 break;
2631 case T_INT:
2632 box->int_field_put(value_offset, value->i);
2633 break;
2634 case T_LONG:
2635 box->long_field_put(long_value_offset, value->j);
2636 break;
2637 default:
2638 return T_ILLEGAL;
2639 } // end switch
2640 return type;
2641 }
2642
2643
2644 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2645 switch (type) {
2646 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2647 case T_CHAR: st->print("%d", value->c); break;
2648 case T_BYTE: st->print("%d", value->b); break;
2649 case T_SHORT: st->print("%d", value->s); break;
2650 case T_INT: st->print("%d", value->i); break;
2651 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2652 case T_FLOAT: st->print("%f", value->f); break;
2653 case T_DOUBLE: st->print("%lf", value->d); break;
2654 default: st->print("type %d?", type); break;
2655 }
2656 }
2657
2658
2659 // Support for java_lang_ref_Reference
2660 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
2661 InstanceKlass* ik = SystemDictionary::Reference_klass();
2662 address addr = ik->static_field_addr(static_lock_offset);
2663 return (HeapWord*) addr;
2664 }
2665
2666 oop java_lang_ref_Reference::pending_list_lock() {
2667 InstanceKlass* ik = SystemDictionary::Reference_klass();
2668 address addr = ik->static_field_addr(static_lock_offset);
2669 if (UseCompressedOops) {
2670 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2671 } else {
2672 return oopDesc::load_decode_heap_oop((oop*)addr);
2673 }
2674 }
2675
2676 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2677 InstanceKlass* ik = SystemDictionary::Reference_klass();
2678 address addr = ik->static_field_addr(static_pending_offset);
2679 // XXX This might not be HeapWord aligned, almost rather be char *.
2680 return (HeapWord*)addr;
2681 }
2682
2683 oop java_lang_ref_Reference::pending_list() {
2684 char *addr = (char *)pending_list_addr();
2685 if (UseCompressedOops) {
2686 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2687 } else {
2688 return oopDesc::load_decode_heap_oop((oop*)addr);
2689 }
2690 }
2691
2692
2693 // Support for java_lang_ref_SoftReference
2694
2695 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2696 return ref->long_field(timestamp_offset);
2697 }
2698
2699 jlong java_lang_ref_SoftReference::clock() {
2700 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
2701 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2702 return *offset;
2703 }
2704
2705 void java_lang_ref_SoftReference::set_clock(jlong value) {
2706 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
2707 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2708 *offset = value;
2709 }
2710
2711 // Support for java_lang_invoke_DirectMethodHandle
2712
2713 int java_lang_invoke_DirectMethodHandle::_member_offset;
2714
2715 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
2716 oop member_name = NULL;
2717 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
2718 assert(is_dmh, "a DirectMethodHandle oop is expected");
2719 if (is_dmh) {
2720 member_name = dmh->obj_field(member_offset_in_bytes());
2721 }
2722 return member_name;
2723 }
2724
2725 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2726 Klass* klass_oop = SystemDictionary::DirectMethodHandle_klass();
2727 if (klass_oop != NULL) {
2728 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2729 }
2730 }
2731
2732 // Support for java_lang_invoke_MethodHandle
2733
2734 int java_lang_invoke_MethodHandle::_type_offset;
2735 int java_lang_invoke_MethodHandle::_form_offset;
2736
2737 int java_lang_invoke_MemberName::_clazz_offset;
2738 int java_lang_invoke_MemberName::_name_offset;
2739 int java_lang_invoke_MemberName::_type_offset;
2740 int java_lang_invoke_MemberName::_flags_offset;
2741 int java_lang_invoke_MemberName::_vmtarget_offset;
2742 int java_lang_invoke_MemberName::_vmloader_offset;
2743 int java_lang_invoke_MemberName::_vmindex_offset;
2744
2745 int java_lang_invoke_LambdaForm::_vmentry_offset;
2746
2747 void java_lang_invoke_MethodHandle::compute_offsets() {
2748 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
2749 if (klass_oop != NULL) {
2750 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2751 compute_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2752 }
2753 }
2754
2755 void java_lang_invoke_MemberName::compute_offsets() {
2756 Klass* klass_oop = SystemDictionary::MemberName_klass();
2757 if (klass_oop != NULL) {
2758 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2759 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2760 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2761 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2762 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2763 }
2764 }
2765
2766 void java_lang_invoke_LambdaForm::compute_offsets() {
2767 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
2768 if (klass_oop != NULL) {
2769 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2770 }
2771 }
2772
2773 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
2774 return obj != NULL && is_subclass(obj->klass());
2775 }
2776
2777
2778 oop java_lang_invoke_MethodHandle::type(oop mh) {
2779 return mh->obj_field(_type_offset);
2780 }
2781
2782 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2783 mh->obj_field_put(_type_offset, mtype);
2784 }
2785
2786 oop java_lang_invoke_MethodHandle::form(oop mh) {
2787 assert(_form_offset != 0, "");
2788 return mh->obj_field(_form_offset);
2789 }
2790
2791 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
2792 assert(_form_offset != 0, "");
2793 mh->obj_field_put(_form_offset, lform);
2794 }
2795
2796 /// MemberName accessors
2797
2798 oop java_lang_invoke_MemberName::clazz(oop mname) {
2799 assert(is_instance(mname), "wrong type");
2800 return mname->obj_field(_clazz_offset);
2801 }
2802
2803 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
2804 assert(is_instance(mname), "wrong type");
2805 mname->obj_field_put(_clazz_offset, clazz);
2806 }
2807
2808 oop java_lang_invoke_MemberName::name(oop mname) {
2809 assert(is_instance(mname), "wrong type");
2810 return mname->obj_field(_name_offset);
2811 }
2812
2813 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
2814 assert(is_instance(mname), "wrong type");
2815 mname->obj_field_put(_name_offset, name);
2816 }
2817
2818 oop java_lang_invoke_MemberName::type(oop mname) {
2819 assert(is_instance(mname), "wrong type");
2820 return mname->obj_field(_type_offset);
2821 }
2822
2823 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
2824 assert(is_instance(mname), "wrong type");
2825 mname->obj_field_put(_type_offset, type);
2826 }
2827
2828 int java_lang_invoke_MemberName::flags(oop mname) {
2829 assert(is_instance(mname), "wrong type");
2830 return mname->int_field(_flags_offset);
2831 }
2832
2833 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
2834 assert(is_instance(mname), "wrong type");
2835 mname->int_field_put(_flags_offset, flags);
2836 }
2837
2838 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
2839 assert(is_instance(mname), "wrong type");
2840 return (Metadata*)mname->address_field(_vmtarget_offset);
2841 }
2842
2843 bool java_lang_invoke_MemberName::is_method(oop mname) {
2844 assert(is_instance(mname), "must be MemberName");
2845 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
2846 }
2847
2848 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
2849 assert(is_instance(mname), "wrong type");
2850 // check the type of the vmtarget
2851 oop dependency = NULL;
2852 if (ref != NULL) {
2853 switch (flags(mname) & (MN_IS_METHOD |
2854 MN_IS_CONSTRUCTOR |
2855 MN_IS_FIELD)) {
2856 case MN_IS_METHOD:
2857 case MN_IS_CONSTRUCTOR:
2858 assert(ref->is_method(), "should be a method");
2859 dependency = ((Method*)ref)->method_holder()->java_mirror();
2860 break;
2861 case MN_IS_FIELD:
2862 assert(ref->is_klass(), "should be a class");
2863 dependency = ((Klass*)ref)->java_mirror();
2864 break;
2865 default:
2866 ShouldNotReachHere();
2867 }
2868 }
2869 mname->address_field_put(_vmtarget_offset, (address)ref);
2870 // Add a reference to the loader (actually mirror because anonymous classes will not have
2871 // distinct loaders) to ensure the metadata is kept alive
2872 // This mirror may be different than the one in clazz field.
2873 mname->obj_field_put(_vmloader_offset, dependency);
2874 }
2875
2876 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
2877 assert(is_instance(mname), "wrong type");
2878 return (intptr_t) mname->address_field(_vmindex_offset);
2879 }
2880
2881 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
2882 assert(is_instance(mname), "wrong type");
2883 mname->address_field_put(_vmindex_offset, (address) index);
2884 }
2885
2886 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
2887 assert(is_instance(lform), "wrong type");
2888 return lform->obj_field(_vmentry_offset);
2889 }
2890
2891
2892 // Support for java_lang_invoke_MethodType
2893
2894 int java_lang_invoke_MethodType::_rtype_offset;
2895 int java_lang_invoke_MethodType::_ptypes_offset;
2896
2897 void java_lang_invoke_MethodType::compute_offsets() {
2898 Klass* k = SystemDictionary::MethodType_klass();
2899 if (k != NULL) {
2900 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
2901 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
2902 }
2903 }
2904
2905 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
2906 st->print("(");
2907 objArrayOop pts = ptypes(mt);
2908 for (int i = 0, limit = pts->length(); i < limit; i++) {
2909 java_lang_Class::print_signature(pts->obj_at(i), st);
2910 }
2911 st->print(")");
2912 java_lang_Class::print_signature(rtype(mt), st);
2913 }
2914
2915 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
2916 ResourceMark rm;
2917 stringStream buffer(128);
2918 print_signature(mt, &buffer);
2919 const char* sigstr = buffer.base();
2920 int siglen = (int) buffer.size();
2921 Symbol *name;
2922 if (!intern_if_not_found) {
2923 name = SymbolTable::probe(sigstr, siglen);
2924 } else {
2925 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
2926 }
2927 return name;
2928 }
2929
2930 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
2931 if (mt1 == mt2)
2932 return true;
2933 if (rtype(mt1) != rtype(mt2))
2934 return false;
2935 if (ptype_count(mt1) != ptype_count(mt2))
2936 return false;
2937 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
2938 if (ptype(mt1, i) != ptype(mt2, i))
2939 return false;
2940 }
2941 return true;
2942 }
2943
2944 oop java_lang_invoke_MethodType::rtype(oop mt) {
2945 assert(is_instance(mt), "must be a MethodType");
2946 return mt->obj_field(_rtype_offset);
2947 }
2948
2949 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
2950 assert(is_instance(mt), "must be a MethodType");
2951 return (objArrayOop) mt->obj_field(_ptypes_offset);
2952 }
2953
2954 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
2955 return ptypes(mt)->obj_at(idx);
2956 }
2957
2958 int java_lang_invoke_MethodType::ptype_count(oop mt) {
2959 return ptypes(mt)->length();
2960 }
2961
2962 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
2963 objArrayOop pts = ptypes(mt);
2964 int count = pts->length();
2965 int slots = 0;
2966 for (int i = 0; i < count; i++) {
2967 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
2968 slots += type2size[bt];
2969 }
2970 return slots;
2971 }
2972
2973 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
2974 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
2975 return type2size[bt];
2976 }
2977
2978
2979 // Support for java_lang_invoke_CallSite
2980
2981 int java_lang_invoke_CallSite::_target_offset;
2982 int java_lang_invoke_CallSite::_context_offset;
2983
2984 void java_lang_invoke_CallSite::compute_offsets() {
2985 Klass* k = SystemDictionary::CallSite_klass();
2986 if (k != NULL) {
2987 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
2988 compute_offset(_context_offset, k, vmSymbols::context_name(),
2989 vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
2990 }
2991 }
2992
2993 oop java_lang_invoke_CallSite::context(oop call_site) {
2994 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
2995
2996 oop dep_oop = call_site->obj_field(_context_offset);
2997 return dep_oop;
2998 }
2999
3000 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3001
3002 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3003
3004 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3005 Klass* k = SystemDictionary::Context_klass();
3006 if (k != NULL) {
3007 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3008 }
3009 }
3010
3011 nmethodBucket* java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3012 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3013 return (nmethodBucket*) (address) call_site->long_field(_vmdependencies_offset);
3014 }
3015
3016 void java_lang_invoke_MethodHandleNatives_CallSiteContext::set_vmdependencies(oop call_site, nmethodBucket* context) {
3017 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3018 call_site->long_field_put(_vmdependencies_offset, (jlong) (address) context);
3019 }
3020
3021 // Support for java_security_AccessControlContext
3022
3023 int java_security_AccessControlContext::_context_offset = 0;
3024 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3025 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3026 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3027
3028 void java_security_AccessControlContext::compute_offsets() {
3029 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3030 fieldDescriptor fd;
3031 InstanceKlass* ik = SystemDictionary::AccessControlContext_klass();
3032
3033 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
3034 fatal("Invalid layout of java.security.AccessControlContext");
3035 }
3036 _context_offset = fd.offset();
3037
3038 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
3039 fatal("Invalid layout of java.security.AccessControlContext");
3040 }
3041 _privilegedContext_offset = fd.offset();
3042
3043 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
3044 fatal("Invalid layout of java.security.AccessControlContext");
3045 }
3046 _isPrivileged_offset = fd.offset();
3047
3048 // The offset may not be present for bootstrapping with older JDK.
3049 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
3050 _isAuthorized_offset = fd.offset();
3051 }
3052 }
3053
3054
3055 bool java_security_AccessControlContext::is_authorized(Handle context) {
3056 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3057 assert(_isAuthorized_offset != -1, "should be set");
3058 return context->bool_field(_isAuthorized_offset) != 0;
3059 }
3060
3061 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3062 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3063 // Ensure klass is initialized
3064 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3065 // Allocate result
3066 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3067 // Fill in values
3068 result->obj_field_put(_context_offset, context());
3069 result->obj_field_put(_privilegedContext_offset, privileged_context());
3070 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3071 // whitelist AccessControlContexts created by the JVM if present
3072 if (_isAuthorized_offset != -1) {
3073 result->bool_field_put(_isAuthorized_offset, true);
3074 }
3075 return result;
3076 }
3077
3078
3079 // Support for java_lang_ClassLoader
3080
3081 bool java_lang_ClassLoader::offsets_computed = false;
3082 int java_lang_ClassLoader::_loader_data_offset = -1;
3083 int java_lang_ClassLoader::parallelCapable_offset = -1;
3084
3085 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
3086 assert(loader != NULL && loader->is_oop(), "loader must be oop");
3087 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
3088 }
3089
3090 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3091 return *java_lang_ClassLoader::loader_data_addr(loader);
3092 }
3093
3094 void java_lang_ClassLoader::compute_offsets() {
3095 assert(!offsets_computed, "offsets should be initialized only once");
3096 offsets_computed = true;
3097
3098 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
3099 Klass* k1 = SystemDictionary::ClassLoader_klass();
3100 compute_optional_offset(parallelCapable_offset,
3101 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
3102
3103 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3104 }
3105
3106 oop java_lang_ClassLoader::parent(oop loader) {
3107 assert(is_instance(loader), "loader must be oop");
3108 return loader->obj_field(parent_offset);
3109 }
3110
3111 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
3112 assert(is_instance(loader), "loader must be oop");
3113 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
3114 oop acl = loader;
3115 debug_only(jint loop_count = 0);
3116 // This loop taken verbatim from ClassLoader.java:
3117 do {
3118 acl = parent(acl);
3119 if (cl == acl) {
3120 return true;
3121 }
3122 assert(++loop_count > 0, "loop_count overflow");
3123 } while (acl != NULL);
3124 return false;
3125 }
3126
3127 bool java_lang_ClassLoader::is_instance(oop obj) {
3128 return obj != NULL && is_subclass(obj->klass());
3129 }
3130
3131
3132 // For class loader classes, parallelCapable defined
3133 // based on non-null field
3134 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
3135 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
3136 if (parallelCapable_offset == -1) {
3137 // Default for backward compatibility is false
3138 return false;
3139 }
3140 return (class_loader->obj_field(parallelCapable_offset) != NULL);
3141 }
3142
3143 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
3144 // Fix for 4474172; see evaluation for more details
3145 loader = non_reflection_class_loader(loader);
3146
3147 oop cl = SystemDictionary::java_system_loader();
3148 while(cl != NULL) {
3149 if (cl == loader) return true;
3150 cl = parent(cl);
3151 }
3152 return false;
3153 }
3154
3155 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
3156 if (loader != NULL) {
3157 // See whether this is one of the class loaders associated with
3158 // the generated bytecodes for reflection, and if so, "magically"
3159 // delegate to its parent to prevent class loading from occurring
3160 // in places where applications using reflection didn't expect it.
3161 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
3162 // This might be null in non-1.4 JDKs
3163 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
3164 return parent(loader);
3165 }
3166 }
3167 return loader;
3168 }
3169
3170
3171 // Support for java_lang_System
3172 int java_lang_System::in_offset_in_bytes() {
3173 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
3174 }
3175
3176
3177 int java_lang_System::out_offset_in_bytes() {
3178 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
3179 }
3180
3181
3182 int java_lang_System::err_offset_in_bytes() {
3183 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
3184 }
3185
3186
3187 bool java_lang_System::has_security_manager() {
3188 InstanceKlass* ik = SystemDictionary::System_klass();
3189 address addr = ik->static_field_addr(static_security_offset);
3190 if (UseCompressedOops) {
3191 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
3192 } else {
3193 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
3194 }
3195 }
3196
3197 int java_lang_Class::_klass_offset;
3198 int java_lang_Class::_array_klass_offset;
3199 int java_lang_Class::_oop_size_offset;
3200 int java_lang_Class::_static_oop_field_count_offset;
3201 int java_lang_Class::_class_loader_offset;
3202 int java_lang_Class::_protection_domain_offset;
3203 int java_lang_Class::_component_mirror_offset;
3204 int java_lang_Class::_init_lock_offset;
3205 int java_lang_Class::_signers_offset;
3206 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
3207 int java_lang_Throwable::backtrace_offset;
3208 int java_lang_Throwable::detailMessage_offset;
3209 int java_lang_Throwable::cause_offset;
3210 int java_lang_Throwable::stackTrace_offset;
3211 int java_lang_Throwable::static_unassigned_stacktrace_offset;
3212 int java_lang_reflect_AccessibleObject::override_offset;
3213 int java_lang_reflect_Method::clazz_offset;
3214 int java_lang_reflect_Method::name_offset;
3215 int java_lang_reflect_Method::returnType_offset;
3216 int java_lang_reflect_Method::parameterTypes_offset;
3217 int java_lang_reflect_Method::exceptionTypes_offset;
3218 int java_lang_reflect_Method::slot_offset;
3219 int java_lang_reflect_Method::modifiers_offset;
3220 int java_lang_reflect_Method::signature_offset;
3221 int java_lang_reflect_Method::annotations_offset;
3222 int java_lang_reflect_Method::parameter_annotations_offset;
3223 int java_lang_reflect_Method::annotation_default_offset;
3224 int java_lang_reflect_Method::type_annotations_offset;
3225 int java_lang_reflect_Constructor::clazz_offset;
3226 int java_lang_reflect_Constructor::parameterTypes_offset;
3227 int java_lang_reflect_Constructor::exceptionTypes_offset;
3228 int java_lang_reflect_Constructor::slot_offset;
3229 int java_lang_reflect_Constructor::modifiers_offset;
3230 int java_lang_reflect_Constructor::signature_offset;
3231 int java_lang_reflect_Constructor::annotations_offset;
3232 int java_lang_reflect_Constructor::parameter_annotations_offset;
3233 int java_lang_reflect_Constructor::type_annotations_offset;
3234 int java_lang_reflect_Field::clazz_offset;
3235 int java_lang_reflect_Field::name_offset;
3236 int java_lang_reflect_Field::type_offset;
3237 int java_lang_reflect_Field::slot_offset;
3238 int java_lang_reflect_Field::modifiers_offset;
3239 int java_lang_reflect_Field::signature_offset;
3240 int java_lang_reflect_Field::annotations_offset;
3241 int java_lang_reflect_Field::type_annotations_offset;
3242 int java_lang_reflect_Parameter::name_offset;
3243 int java_lang_reflect_Parameter::modifiers_offset;
3244 int java_lang_reflect_Parameter::index_offset;
3245 int java_lang_reflect_Parameter::executable_offset;
3246 int java_lang_boxing_object::value_offset;
3247 int java_lang_boxing_object::long_value_offset;
3248 int java_lang_ref_Reference::referent_offset;
3249 int java_lang_ref_Reference::queue_offset;
3250 int java_lang_ref_Reference::next_offset;
3251 int java_lang_ref_Reference::discovered_offset;
3252 int java_lang_ref_Reference::static_lock_offset;
3253 int java_lang_ref_Reference::static_pending_offset;
3254 int java_lang_ref_Reference::number_of_fake_oop_fields;
3255 int java_lang_ref_SoftReference::timestamp_offset;
3256 int java_lang_ref_SoftReference::static_clock_offset;
3257 int java_lang_ClassLoader::parent_offset;
3258 int java_lang_System::static_in_offset;
3259 int java_lang_System::static_out_offset;
3260 int java_lang_System::static_err_offset;
3261 int java_lang_System::static_security_offset;
3262 int java_lang_StackTraceElement::declaringClass_offset;
3263 int java_lang_StackTraceElement::methodName_offset;
3264 int java_lang_StackTraceElement::fileName_offset;
3265 int java_lang_StackTraceElement::lineNumber_offset;
3266 int java_lang_AssertionStatusDirectives::classes_offset;
3267 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3268 int java_lang_AssertionStatusDirectives::packages_offset;
3269 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3270 int java_lang_AssertionStatusDirectives::deflt_offset;
3271 int java_nio_Buffer::_limit_offset;
3272 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3273 int sun_reflect_ConstantPool::_oop_offset;
3274 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3275
3276
3277 // Support for java_lang_StackTraceElement
3278
3279 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3280 element->obj_field_put(fileName_offset, value);
3281 }
3282
3283 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3284 element->obj_field_put(declaringClass_offset, value);
3285 }
3286
3287 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3288 element->obj_field_put(methodName_offset, value);
3289 }
3290
3291 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3292 element->int_field_put(lineNumber_offset, value);
3293 }
3294
3295
3296 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3297
3298 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3299 o->obj_field_put(classes_offset, val);
3300 }
3301
3302 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3303 o->obj_field_put(classEnabled_offset, val);
3304 }
3305
3306 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3307 o->obj_field_put(packages_offset, val);
3308 }
3309
3310 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3311 o->obj_field_put(packageEnabled_offset, val);
3312 }
3313
3314 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3315 o->bool_field_put(deflt_offset, val);
3316 }
3317
3318
3319 // Support for intrinsification of java.nio.Buffer.checkIndex
3320 int java_nio_Buffer::limit_offset() {
3321 return _limit_offset;
3322 }
3323
3324
3325 void java_nio_Buffer::compute_offsets() {
3326 Klass* k = SystemDictionary::nio_Buffer_klass();
3327 assert(k != NULL, "must be loaded in 1.4+");
3328 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3329 }
3330
3331 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3332 if (_owner_offset != 0) return;
3333
3334 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3335 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3336 compute_offset(_owner_offset, k,
3337 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3338 }
3339
3340 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3341 assert(_owner_offset != 0, "Must be initialized");
3342 return obj->obj_field(_owner_offset);
3343 }
3344
3345 // Compute hard-coded offsets
3346 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3347 // are not available to determine the offset_of_static_fields.
3348 void JavaClasses::compute_hard_coded_offsets() {
3349 const int x = heapOopSize;
3350 const int header = instanceOopDesc::base_offset_in_bytes();
3351
3352 // Throwable Class
3353 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3354 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3355 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3356 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3357 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3358
3359 // java_lang_boxing_object
3360 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3361 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3362
3363 // java_lang_ref_Reference:
3364 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3365 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3366 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3367 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3368 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3369 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3370 // Artificial fields for java_lang_ref_Reference
3371 // The first field is for the discovered field added in 1.4
3372 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3373
3374 // java_lang_ref_SoftReference Class
3375 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3376 // Don't multiply static fields because they are always in wordSize units
3377 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3378
3379 // java_lang_ClassLoader
3380 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3381
3382 // java_lang_System
3383 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3384 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3385 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3386 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3387
3388 // java_lang_StackTraceElement
3389 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3390 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3391 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3392 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3393 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3394 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3395 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3396 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3397 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3398
3399 }
3400
3401
3402 // Compute non-hard-coded field offsets of all the classes in this file
3403 void JavaClasses::compute_offsets() {
3404 // java_lang_Class::compute_offsets was called earlier in bootstrap
3405 java_lang_ClassLoader::compute_offsets();
3406 java_lang_Thread::compute_offsets();
3407 java_lang_ThreadGroup::compute_offsets();
3408 java_lang_invoke_MethodHandle::compute_offsets();
3409 java_lang_invoke_DirectMethodHandle::compute_offsets();
3410 java_lang_invoke_MemberName::compute_offsets();
3411 java_lang_invoke_LambdaForm::compute_offsets();
3412 java_lang_invoke_MethodType::compute_offsets();
3413 java_lang_invoke_CallSite::compute_offsets();
3414 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
3415 java_security_AccessControlContext::compute_offsets();
3416 // Initialize reflection classes. The layouts of these classes
3417 // changed with the new reflection implementation in JDK 1.4, and
3418 // since the Universe doesn't know what JDK version it is until this
3419 // point we defer computation of these offsets until now.
3420 java_lang_reflect_AccessibleObject::compute_offsets();
3421 java_lang_reflect_Method::compute_offsets();
3422 java_lang_reflect_Constructor::compute_offsets();
3423 java_lang_reflect_Field::compute_offsets();
3424 java_nio_Buffer::compute_offsets();
3425 sun_reflect_ConstantPool::compute_offsets();
3426 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3427 java_lang_reflect_Parameter::compute_offsets();
3428
3429 // generated interpreter code wants to know about the offsets we just computed:
3430 AbstractAssembler::update_delayed_values();
3431 }
3432
3433 #ifndef PRODUCT
3434
3435 // These functions exist to assert the validity of hard-coded field offsets to guard
3436 // against changes in the class files
3437
3438 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3439 EXCEPTION_MARK;
3440 fieldDescriptor fd;
3441 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3442 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3443 instanceKlassHandle h_klass (THREAD, k);
3444 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3445 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3446 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3447 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3448 return false;
3449 }
3450 if (fd.is_static()) {
3451 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3452 return false;
3453 }
3454 if (fd.offset() == hardcoded_offset ) {
3455 return true;
3456 } else {
3457 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3458 klass_name, field_name, hardcoded_offset, fd.offset());
3459 return false;
3460 }
3461 }
3462
3463
3464 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3465 EXCEPTION_MARK;
3466 fieldDescriptor fd;
3467 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3468 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3469 instanceKlassHandle h_klass (THREAD, k);
3470 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3471 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3472 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3473 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3474 return false;
3475 }
3476 if (!fd.is_static()) {
3477 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3478 return false;
3479 }
3480 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3481 return true;
3482 } else {
3483 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());
3484 return false;
3485 }
3486 }
3487
3488
3489 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3490 EXCEPTION_MARK;
3491 fieldDescriptor fd;
3492 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3493 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3494 instanceKlassHandle h_klass (THREAD, k);
3495 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3496 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3497 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3498 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3499 return false;
3500 }
3501 if (!fd.is_static() || !fd.has_initial_value()) {
3502 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3503 return false;
3504 }
3505 if (!fd.initial_value_tag().is_int()) {
3506 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3507 return false;
3508 }
3509 jint field_value = fd.int_initial_value();
3510 if (field_value == hardcoded_constant) {
3511 return true;
3512 } else {
3513 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);
3514 return false;
3515 }
3516 }
3517
3518
3519 // Check the hard-coded field offsets of all the classes in this file
3520
3521 void JavaClasses::check_offsets() {
3522 bool valid = true;
3523 HandleMark hm;
3524
3525 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3526 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3527
3528 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3529 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3530
3531 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3532 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3533
3534 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3535 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3536
3537 // java.lang.String
3538
3539 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C");
3540 if (java_lang_String::has_offset_field()) {
3541 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I");
3542 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I");
3543 }
3544 if (java_lang_String::has_hash_field()) {
3545 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3546 }
3547
3548 // java.lang.Class
3549
3550 // Fake fields
3551 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3552 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3553
3554 // java.lang.Throwable
3555
3556 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3557 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3558 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3559 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3560
3561 // Boxed primitive objects (java_lang_boxing_object)
3562
3563 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3564 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3565 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3566 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3567 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3568 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3569 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3570 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3571
3572 // java.lang.ClassLoader
3573
3574 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3575
3576 // java.lang.System
3577
3578 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3579 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3580 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3581 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
3582
3583 // java.lang.StackTraceElement
3584
3585 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3586 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3587 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3588 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3589
3590 // java.lang.ref.Reference
3591
3592 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3593 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3594 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3595 // Fake field
3596 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3597 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3598 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3599
3600 // java.lang.ref.SoftReference
3601
3602 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3603 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3604
3605 // java.lang.AssertionStatusDirectives
3606 //
3607 // The CheckAssertionStatusDirectives boolean can be removed from here and
3608 // globals.hpp after the AssertionStatusDirectives class has been integrated
3609 // into merlin "for some time." Without it, the vm will fail with early
3610 // merlin builds.
3611
3612 if (CheckAssertionStatusDirectives) {
3613 const char* nm = "java/lang/AssertionStatusDirectives";
3614 const char* sig = "[Ljava/lang/String;";
3615 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3616 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3617 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3618 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3619 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3620 }
3621
3622 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3623 }
3624
3625 #endif // PRODUCT
3626
3627 int InjectedField::compute_offset() {
3628 InstanceKlass* ik = InstanceKlass::cast(klass());
3629 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
3630 if (!may_be_java && !fs.access_flags().is_internal()) {
3631 // Only look at injected fields
3632 continue;
3633 }
3634 if (fs.name() == name() && fs.signature() == signature()) {
3635 return fs.offset();
3636 }
3637 }
3638 ResourceMark rm;
3639 tty->print_cr("Invalid layout of %s at %s/%s%s", ik->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : "");
3640 #ifndef PRODUCT
3641 ik->print();
3642 tty->print_cr("all fields:");
3643 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
3644 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3645 }
3646 #endif //PRODUCT
3647 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class");
3648 return -1;
3649 }
3650
3651 void javaClasses_init() {
3652 JavaClasses::compute_offsets();
3653 JavaClasses::check_offsets();
3654 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3655 }