1 /*
2 * Copyright (c) 1997, 2016, 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/dependencyContext.hpp"
32 #include "code/pcDesc.hpp"
33 #include "interpreter/interpreter.hpp"
34 #include "memory/oopFactory.hpp"
35 #include "memory/resourceArea.hpp"
36 #include "memory/universe.inline.hpp"
37 #include "oops/fieldStreams.hpp"
38 #include "oops/instanceKlass.hpp"
39 #include "oops/instanceMirrorKlass.hpp"
40 #include "oops/klass.hpp"
41 #include "oops/method.hpp"
42 #include "oops/objArrayOop.inline.hpp"
43 #include "oops/oop.inline.hpp"
44 #include "oops/symbol.hpp"
45 #include "oops/typeArrayOop.hpp"
46 #include "prims/jvmtiRedefineClassesTrace.hpp"
47 #include "runtime/fieldDescriptor.hpp"
48 #include "runtime/handles.inline.hpp"
49 #include "runtime/interfaceSupport.hpp"
50 #include "runtime/java.hpp"
51 #include "runtime/javaCalls.hpp"
52 #include "runtime/safepoint.hpp"
53 #include "runtime/thread.inline.hpp"
54 #include "runtime/vframe.hpp"
55 #include "utilities/preserveException.hpp"
56
57 #if INCLUDE_JVMCI
58 #include "jvmci/jvmciJavaClasses.hpp"
59 #endif
60
61 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
62 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
63
64 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
65 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
66
67 InjectedField JavaClasses::_injected_fields[] = {
68 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
69 };
70
71 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
72 return _injected_fields[id].compute_offset();
73 }
74
75
76 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
77 *field_count = 0;
78
79 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
80 if (sid == vmSymbols::NO_SID) {
81 // Only well known classes can inject fields
82 return NULL;
83 }
84
85 int count = 0;
86 int start = -1;
87
88 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
89 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
90 count++; \
91 if (start == -1) start = klass##_##name##_enum; \
92 }
93 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
94 #undef LOOKUP_INJECTED_FIELD
95
96 if (start != -1) {
97 *field_count = count;
98 return _injected_fields + start;
99 }
100 return NULL;
101 }
102
103
104 static bool find_field(InstanceKlass* ik,
105 Symbol* name_symbol, Symbol* signature_symbol,
106 fieldDescriptor* fd,
107 bool is_static = false, bool allow_super = false) {
108 if (allow_super || is_static) {
109 return ik->find_field(name_symbol, signature_symbol, is_static, fd) != NULL;
110 } else {
111 return ik->find_local_field(name_symbol, signature_symbol, fd);
112 }
113 }
114
115 // Helpful routine for computing field offsets at run time rather than hardcoding them
116 static void
117 compute_offset(int &dest_offset,
118 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
119 bool is_static = false, bool allow_super = false) {
120 fieldDescriptor fd;
121 InstanceKlass* ik = InstanceKlass::cast(klass);
122 if (!find_field(ik, name_symbol, signature_symbol, &fd, is_static, allow_super)) {
123 ResourceMark rm;
124 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
125 #ifndef PRODUCT
126 ik->print();
127 tty->print_cr("all fields:");
128 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
129 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
130 }
131 #endif //PRODUCT
132 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:classload=info to see the origin of the problem class");
133 }
134 dest_offset = fd.offset();
135 }
136
137 // Same as above but for "optional" offsets that might not be present in certain JDK versions
138 static void
139 compute_optional_offset(int& dest_offset,
140 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
141 bool allow_super = false) {
142 fieldDescriptor fd;
143 InstanceKlass* ik = InstanceKlass::cast(klass);
144 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
145 dest_offset = fd.offset();
146 }
147 }
148
149
150 int java_lang_String::value_offset = 0;
151 int java_lang_String::hash_offset = 0;
152 int java_lang_String::coder_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::byte_array_signature());
165 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
166 compute_optional_offset(coder_offset, k, vmSymbols::coder_name(), vmSymbols::byte_signature());
167
168 initialized = true;
169 }
170
171 class CompactStringsFixup : public FieldClosure {
172 private:
173 bool _value;
174
175 public:
176 CompactStringsFixup(bool value) : _value(value) {}
177
178 void do_field(fieldDescriptor* fd) {
179 if (fd->name() == vmSymbols::compact_strings_name()) {
180 oop mirror = fd->field_holder()->java_mirror();
181 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
182 assert(mirror != NULL, "String must have mirror already");
183 mirror->bool_field_put(fd->offset(), _value);
184 }
185 }
186 };
187
188 void java_lang_String::set_compact_strings(bool value) {
189 CompactStringsFixup fix(value);
190 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
191 }
192
193 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
194 assert(initialized, "Must be initialized");
195 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
196
197 // Create the String object first, so there's a chance that the String
198 // and the char array it points to end up in the same cache line.
199 oop obj;
200 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
201
202 // Create the char array. The String object must be handlized here
203 // because GC can happen as a result of the allocation attempt.
204 Handle h_obj(THREAD, obj);
205 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
206 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
207
208 // Point the String at the char array
209 obj = h_obj();
210 set_value(obj, buffer);
211 // No need to zero the offset, allocation zero'ed the entire String object
212 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
213 return h_obj;
214 }
215
216 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
217 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
218 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
219 typeArrayOop buffer = value(h_obj());
220 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
221 if (is_latin1) {
222 for (int index = 0; index < length; index++) {
223 buffer->byte_at_put(index, (jbyte)unicode[index]);
224 }
225 } else {
226 for (int index = 0; index < length; index++) {
227 buffer->char_at_put(index, unicode[index]);
228 }
229 }
230
231 #ifdef ASSERT
232 {
233 ResourceMark rm;
234 char* expected = UNICODE::as_utf8(unicode, length);
235 char* actual = as_utf8_string(h_obj());
236 if (strcmp(expected, actual) != 0) {
237 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
238 ShouldNotReachHere();
239 }
240 }
241 #endif
242
243 return h_obj;
244 }
245
246 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
247 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
248 return h_obj();
249 }
250
251 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
252 if (utf8_str == NULL) {
253 return Handle();
254 }
255 bool has_multibyte, is_latin1;
256 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
257 if (!CompactStrings) {
258 has_multibyte = true;
259 is_latin1 = false;
260 }
261
262 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
263 if (length > 0) {
264 if (!has_multibyte) {
265 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
266 } else if (is_latin1) {
267 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
268 } else {
269 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
270 }
271 }
272
273 #ifdef ASSERT
274 // This check is too strict because the input string is not necessarily valid UTF8.
275 // For example, it may be created with arbitrary content via jni_NewStringUTF.
276 /*
277 {
278 ResourceMark rm;
279 const char* expected = utf8_str;
280 char* actual = as_utf8_string(h_obj());
281 if (strcmp(expected, actual) != 0) {
282 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
283 ShouldNotReachHere();
284 }
285 }
286 */
287 #endif
288
289 return h_obj;
290 }
291
292 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
293 Handle h_obj = create_from_str(utf8_str, CHECK_0);
294 return h_obj();
295 }
296
297 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
298 const char* utf8_str = (char*)symbol->bytes();
299 int utf8_len = symbol->utf8_length();
300
301 bool has_multibyte, is_latin1;
302 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
303 if (!CompactStrings) {
304 has_multibyte = true;
305 is_latin1 = false;
306 }
307
308 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
309 if (length > 0) {
310 if (!has_multibyte) {
311 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
312 } else if (is_latin1) {
313 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
314 } else {
315 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
316 }
317 }
318
319 #ifdef ASSERT
320 {
321 ResourceMark rm;
322 const char* expected = symbol->as_utf8();
323 char* actual = as_utf8_string(h_obj());
324 if (strncmp(expected, actual, utf8_len) != 0) {
325 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
326 ShouldNotReachHere();
327 }
328 }
329 #endif
330
331 return h_obj;
332 }
333
334 // Converts a C string to a Java String based on current encoding
335 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
336 assert(str != NULL, "bad arguments");
337
338 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
339 static to_java_string_fn_t _to_java_string_fn = NULL;
340
341 if (_to_java_string_fn == NULL) {
342 void *lib_handle = os::native_java_library();
343 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
344 if (_to_java_string_fn == NULL) {
345 fatal("NewStringPlatform missing");
346 }
347 }
348
349 jstring js = NULL;
350 { JavaThread* thread = (JavaThread*)THREAD;
351 assert(thread->is_Java_thread(), "must be java thread");
352 HandleMark hm(thread);
353 ThreadToNativeFromVM ttn(thread);
354 js = (_to_java_string_fn)(thread->jni_environment(), str);
355 }
356 return Handle(THREAD, JNIHandles::resolve(js));
357 }
358
359 // Converts a Java String to a native C string that can be used for
360 // native OS calls.
361 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
362 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
363 static to_platform_string_fn_t _to_platform_string_fn = NULL;
364
365 if (_to_platform_string_fn == NULL) {
366 void *lib_handle = os::native_java_library();
367 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
368 if (_to_platform_string_fn == NULL) {
369 fatal("GetStringPlatformChars missing");
370 }
371 }
372
373 char *native_platform_string;
374 { JavaThread* thread = (JavaThread*)THREAD;
375 assert(thread->is_Java_thread(), "must be java thread");
376 JNIEnv *env = thread->jni_environment();
377 jstring js = (jstring) JNIHandles::make_local(env, java_string());
378 bool is_copy;
379 HandleMark hm(thread);
380 ThreadToNativeFromVM ttn(thread);
381 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
382 assert(is_copy == JNI_TRUE, "is_copy value changed");
383 JNIHandles::destroy_local(js);
384 }
385 return native_platform_string;
386 }
387
388 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
389 oop obj = java_string();
390 // Typical usage is to convert all '/' to '.' in string.
391 typeArrayOop value = java_lang_String::value(obj);
392 int length = java_lang_String::length(obj);
393 bool is_latin1 = java_lang_String::is_latin1(obj);
394
395 // First check if any from_char exist
396 int index; // Declared outside, used later
397 for (index = 0; index < length; index++) {
398 jchar c = !is_latin1 ? value->char_at(index) :
399 ((jchar) value->byte_at(index)) & 0xff;
400 if (c == from_char) {
401 break;
402 }
403 }
404 if (index == length) {
405 // No from_char, so do not copy.
406 return java_string;
407 }
408
409 // Check if result string will be latin1
410 bool to_is_latin1 = false;
411
412 // Replacement char must be latin1
413 if (CompactStrings && UNICODE::is_latin1(to_char)) {
414 if (is_latin1) {
415 // Source string is latin1 as well
416 to_is_latin1 = true;
417 } else if (!UNICODE::is_latin1(from_char)) {
418 // We are replacing an UTF16 char. Scan string to
419 // check if result can be latin1 encoded.
420 to_is_latin1 = true;
421 for (index = 0; index < length; index++) {
422 jchar c = value->char_at(index);
423 if (c != from_char && !UNICODE::is_latin1(c)) {
424 to_is_latin1 = false;
425 break;
426 }
427 }
428 }
429 }
430
431 // Create new UNICODE (or byte) buffer. Must handlize value because GC
432 // may happen during String and char array creation.
433 typeArrayHandle h_value(THREAD, value);
434 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
435 typeArrayOop from_buffer = h_value();
436 typeArrayOop to_buffer = java_lang_String::value(string());
437
438 // Copy contents
439 for (index = 0; index < length; index++) {
440 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
441 ((jchar) from_buffer->byte_at(index)) & 0xff;
442 if (c == from_char) {
443 c = to_char;
444 }
445 if (!to_is_latin1) {
446 to_buffer->char_at_put(index, c);
447 } else {
448 to_buffer->byte_at_put(index, (jbyte) c);
449 }
450 }
451 return string;
452 }
453
454 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
455 typeArrayOop value = java_lang_String::value(java_string);
456 length = java_lang_String::length(java_string);
457 bool is_latin1 = java_lang_String::is_latin1(java_string);
458
459 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
460 if (result != NULL) {
461 if (!is_latin1) {
462 for (int index = 0; index < length; index++) {
463 result[index] = value->char_at(index);
464 }
465 } else {
466 for (int index = 0; index < length; index++) {
467 result[index] = ((jchar) value->byte_at(index)) & 0xff;
468 }
469 }
470 } else {
471 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
472 }
473 return result;
474 }
475
476 unsigned int java_lang_String::hash_code(oop java_string) {
477 int length = java_lang_String::length(java_string);
478 // Zero length string will hash to zero with String.hashCode() function.
479 if (length == 0) return 0;
480
481 typeArrayOop value = java_lang_String::value(java_string);
482 bool is_latin1 = java_lang_String::is_latin1(java_string);
483
484 if (is_latin1) {
485 return java_lang_String::hash_code(value->byte_at_addr(0), length);
486 } else {
487 return java_lang_String::hash_code(value->char_at_addr(0), length);
488 }
489 }
490
491 char* java_lang_String::as_quoted_ascii(oop java_string) {
492 typeArrayOop value = java_lang_String::value(java_string);
493 int length = java_lang_String::length(java_string);
494 bool is_latin1 = java_lang_String::is_latin1(java_string);
495
496 if (length == 0) return NULL;
497
498 char* result;
499 int result_length;
500 if (!is_latin1) {
501 jchar* base = value->char_at_addr(0);
502 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
503 result = NEW_RESOURCE_ARRAY(char, result_length);
504 UNICODE::as_quoted_ascii(base, length, result, result_length);
505 } else {
506 jbyte* base = value->byte_at_addr(0);
507 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
508 result = NEW_RESOURCE_ARRAY(char, result_length);
509 UNICODE::as_quoted_ascii(base, length, result, result_length);
510 }
511 assert(result_length >= length + 1, "must not be shorter");
512 assert(result_length == (int)strlen(result) + 1, "must match");
513 return result;
514 }
515
516 unsigned int java_lang_String::hash_string(oop java_string) {
517 int length = java_lang_String::length(java_string);
518 // Zero length string doesn't necessarily hash to zero.
519 if (length == 0) {
520 return StringTable::hash_string((jchar*) NULL, 0);
521 }
522
523 typeArrayOop value = java_lang_String::value(java_string);
524 bool is_latin1 = java_lang_String::is_latin1(java_string);
525 if (is_latin1) {
526 return StringTable::hash_string(value->byte_at_addr(0), length);
527 } else {
528 return StringTable::hash_string(value->char_at_addr(0), length);
529 }
530 }
531
532 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
533 oop obj = java_string();
534 typeArrayOop value = java_lang_String::value(obj);
535 int length = java_lang_String::length(obj);
536 bool is_latin1 = java_lang_String::is_latin1(obj);
537 if (!is_latin1) {
538 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
539 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
540 return sym;
541 } else {
542 ResourceMark rm;
543 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
544 const char* base = UNICODE::as_utf8(position, length);
545 Symbol* sym = SymbolTable::lookup(base, length, THREAD);
546 return sym;
547 }
548 }
549
550 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
551 typeArrayOop value = java_lang_String::value(java_string);
552 int length = java_lang_String::length(java_string);
553 bool is_latin1 = java_lang_String::is_latin1(java_string);
554 if (!is_latin1) {
555 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
556 return SymbolTable::probe_unicode(base, length);
557 } else {
558 ResourceMark rm;
559 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
560 const char* base = UNICODE::as_utf8(position, length);
561 return SymbolTable::probe(base, length);
562 }
563 }
564
565 int java_lang_String::utf8_length(oop java_string) {
566 typeArrayOop value = java_lang_String::value(java_string);
567 int length = java_lang_String::length(java_string);
568 bool is_latin1 = java_lang_String::is_latin1(java_string);
569 if (length == 0) {
570 return 0;
571 }
572 if (!is_latin1) {
573 return UNICODE::utf8_length(value->char_at_addr(0), length);
574 } else {
575 return UNICODE::utf8_length(value->byte_at_addr(0), length);
576 }
577 }
578
579 char* java_lang_String::as_utf8_string(oop java_string) {
580 typeArrayOop value = java_lang_String::value(java_string);
581 int length = java_lang_String::length(java_string);
582 bool is_latin1 = java_lang_String::is_latin1(java_string);
583 if (!is_latin1) {
584 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
585 return UNICODE::as_utf8(position, length);
586 } else {
587 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
588 return UNICODE::as_utf8(position, length);
589 }
590 }
591
592 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
593 typeArrayOop value = java_lang_String::value(java_string);
594 int length = java_lang_String::length(java_string);
595 bool is_latin1 = java_lang_String::is_latin1(java_string);
596 if (!is_latin1) {
597 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
598 return UNICODE::as_utf8(position, length, buf, buflen);
599 } else {
600 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
601 return UNICODE::as_utf8(position, length, buf, buflen);
602 }
603 }
604
605 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
606 typeArrayOop value = java_lang_String::value(java_string);
607 int length = java_lang_String::length(java_string);
608 assert(start + len <= length, "just checking");
609 bool is_latin1 = java_lang_String::is_latin1(java_string);
610 if (!is_latin1) {
611 jchar* position = value->char_at_addr(start);
612 return UNICODE::as_utf8(position, len);
613 } else {
614 jbyte* position = value->byte_at_addr(start);
615 return UNICODE::as_utf8(position, len);
616 }
617 }
618
619 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
620 typeArrayOop value = java_lang_String::value(java_string);
621 int length = java_lang_String::length(java_string);
622 assert(start + len <= length, "just checking");
623 bool is_latin1 = java_lang_String::is_latin1(java_string);
624 if (!is_latin1) {
625 jchar* position = value->char_at_addr(start);
626 return UNICODE::as_utf8(position, len, buf, buflen);
627 } else {
628 jbyte* position = value->byte_at_addr(start);
629 return UNICODE::as_utf8(position, len, buf, buflen);
630 }
631 }
632
633 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
634 assert(java_string->klass() == SystemDictionary::String_klass(),
635 "must be java_string");
636 typeArrayOop value = java_lang_String::value(java_string);
637 int length = java_lang_String::length(java_string);
638 if (length != len) {
639 return false;
640 }
641 bool is_latin1 = java_lang_String::is_latin1(java_string);
642 if (!is_latin1) {
643 for (int i = 0; i < len; i++) {
644 if (value->char_at(i) != chars[i]) {
645 return false;
646 }
647 }
648 } else {
649 for (int i = 0; i < len; i++) {
650 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
651 return false;
652 }
653 }
654 }
655 return true;
656 }
657
658 bool java_lang_String::equals(oop str1, oop str2) {
659 assert(str1->klass() == SystemDictionary::String_klass(),
660 "must be java String");
661 assert(str2->klass() == SystemDictionary::String_klass(),
662 "must be java String");
663 typeArrayOop value1 = java_lang_String::value(str1);
664 int length1 = java_lang_String::length(str1);
665 bool is_latin1 = java_lang_String::is_latin1(str1);
666 typeArrayOop value2 = java_lang_String::value(str2);
667 int length2 = java_lang_String::length(str2);
668 bool is_latin2 = java_lang_String::is_latin1(str2);
669
670 if ((length1 != length2) || (is_latin1 != is_latin2)) {
671 // Strings of different size or with different
672 // coders are never equal.
673 return false;
674 }
675 int blength1 = value1->length();
676 for (int i = 0; i < value1->length(); i++) {
677 if (value1->byte_at(i) != value2->byte_at(i)) {
678 return false;
679 }
680 }
681 return true;
682 }
683
684 void java_lang_String::print(oop java_string, outputStream* st) {
685 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
686 typeArrayOop value = java_lang_String::value(java_string);
687
688 if (value == NULL) {
689 // This can happen if, e.g., printing a String
690 // object before its initializer has been called
691 st->print("NULL");
692 return;
693 }
694
695 int length = java_lang_String::length(java_string);
696 bool is_latin1 = java_lang_String::is_latin1(java_string);
697
698 st->print("\"");
699 for (int index = 0; index < length; index++) {
700 st->print("%c", (!is_latin1) ? value->char_at(index) :
701 ((jchar) value->byte_at(index)) & 0xff );
702 }
703 st->print("\"");
704 }
705
706
707 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
708 assert(mirror.not_null() && fd->is_static(), "just checking");
709 if (fd->has_initial_value()) {
710 BasicType t = fd->field_type();
711 switch (t) {
712 case T_BYTE:
713 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
714 break;
715 case T_BOOLEAN:
716 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
717 break;
718 case T_CHAR:
719 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
720 break;
721 case T_SHORT:
722 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
723 break;
724 case T_INT:
725 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
726 break;
727 case T_FLOAT:
728 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
729 break;
730 case T_DOUBLE:
731 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
732 break;
733 case T_LONG:
734 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
735 break;
736 case T_OBJECT:
737 {
738 #ifdef ASSERT
739 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
740 assert(fd->signature() == sym, "just checking");
741 #endif
742 oop string = fd->string_initial_value(CHECK);
743 mirror()->obj_field_put(fd->offset(), string);
744 }
745 break;
746 default:
747 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
748 "Illegal ConstantValue attribute in class file");
749 }
750 }
751 }
752
753
754 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
755 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
756
757 // If the offset was read from the shared archive, it was fixed up already
758 if (!k->is_shared()) {
759 if (k->is_instance_klass()) {
760 // During bootstrap, java.lang.Class wasn't loaded so static field
761 // offsets were computed without the size added it. Go back and
762 // update all the static field offsets to included the size.
763 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
764 if (fs.access_flags().is_static()) {
765 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
766 fs.set_offset(real_offset);
767 }
768 }
769 }
770 }
771 create_mirror(k, Handle(NULL), Handle(NULL), CHECK);
772 }
773
774 void java_lang_Class::initialize_mirror_fields(KlassHandle k,
775 Handle mirror,
776 Handle protection_domain,
777 TRAPS) {
778 // Allocate a simple java object for a lock.
779 // This needs to be a java object because during class initialization
780 // it can be held across a java call.
781 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
782 set_init_lock(mirror(), r);
783
784 // Set protection domain also
785 set_protection_domain(mirror(), protection_domain());
786
787 // Initialize static fields
788 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, mirror, CHECK);
789 }
790
791 void java_lang_Class::create_mirror(KlassHandle k, Handle class_loader,
792 Handle protection_domain, TRAPS) {
793 assert(k->java_mirror() == NULL, "should only assign mirror once");
794 // Use this moment of initialization to cache modifier_flags also,
795 // to support Class.getModifiers(). Instance classes recalculate
796 // the cached flags after the class file is parsed, but before the
797 // class is put into the system dictionary.
798 int computed_modifiers = k->compute_modifier_flags(CHECK);
799 k->set_modifier_flags(computed_modifiers);
800 // Class_klass has to be loaded because it is used to allocate
801 // the mirror.
802 if (SystemDictionary::Class_klass_loaded()) {
803 // Allocate mirror (java.lang.Class instance)
804 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
805
806 // Setup indirection from mirror->klass
807 if (!k.is_null()) {
808 java_lang_Class::set_klass(mirror(), k());
809 }
810
811 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
812 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
813
814 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
815
816 // It might also have a component mirror. This mirror must already exist.
817 if (k->is_array_klass()) {
818 Handle comp_mirror;
819 if (k->is_typeArray_klass()) {
820 BasicType type = TypeArrayKlass::cast(k())->element_type();
821 comp_mirror = Universe::java_mirror(type);
822 } else {
823 assert(k->is_objArray_klass(), "Must be");
824 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
825 assert(element_klass != NULL, "Must have an element klass");
826 comp_mirror = element_klass->java_mirror();
827 }
828 assert(comp_mirror.not_null(), "must have a mirror");
829
830 // Two-way link between the array klass and its component mirror:
831 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
832 set_component_mirror(mirror(), comp_mirror());
833 set_array_klass(comp_mirror(), k());
834 } else {
835 assert(k->is_instance_klass(), "Must be");
836
837 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
838 if (HAS_PENDING_EXCEPTION) {
839 // If any of the fields throws an exception like OOM remove the klass field
840 // from the mirror so GC doesn't follow it after the klass has been deallocated.
841 // This mirror looks like a primitive type, which logically it is because it
842 // it represents no class.
843 java_lang_Class::set_klass(mirror(), NULL);
844 return;
845 }
846 }
847
848 // set the classLoader field in the java_lang_Class instance
849 assert(class_loader() == k->class_loader(), "should be same");
850 set_class_loader(mirror(), class_loader());
851
852 // Setup indirection from klass->mirror last
853 // after any exceptions can happen during allocations.
854 if (!k.is_null()) {
855 k->set_java_mirror(mirror());
856 }
857 } else {
858 if (fixup_mirror_list() == NULL) {
859 GrowableArray<Klass*>* list =
860 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
861 set_fixup_mirror_list(list);
862 }
863 fixup_mirror_list()->push(k());
864 }
865 }
866
867
868 int java_lang_Class::oop_size(oop java_class) {
869 assert(_oop_size_offset != 0, "must be set");
870 return java_class->int_field(_oop_size_offset);
871 }
872 void java_lang_Class::set_oop_size(oop java_class, int size) {
873 assert(_oop_size_offset != 0, "must be set");
874 java_class->int_field_put(_oop_size_offset, size);
875 }
876 int java_lang_Class::static_oop_field_count(oop java_class) {
877 assert(_static_oop_field_count_offset != 0, "must be set");
878 return java_class->int_field(_static_oop_field_count_offset);
879 }
880 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
881 assert(_static_oop_field_count_offset != 0, "must be set");
882 java_class->int_field_put(_static_oop_field_count_offset, size);
883 }
884
885 oop java_lang_Class::protection_domain(oop java_class) {
886 assert(_protection_domain_offset != 0, "must be set");
887 return java_class->obj_field(_protection_domain_offset);
888 }
889 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
890 assert(_protection_domain_offset != 0, "must be set");
891 java_class->obj_field_put(_protection_domain_offset, pd);
892 }
893
894 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
895 assert(_component_mirror_offset != 0, "must be set");
896 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
897 }
898 oop java_lang_Class::component_mirror(oop java_class) {
899 assert(_component_mirror_offset != 0, "must be set");
900 return java_class->obj_field(_component_mirror_offset);
901 }
902
903 oop java_lang_Class::init_lock(oop java_class) {
904 assert(_init_lock_offset != 0, "must be set");
905 return java_class->obj_field(_init_lock_offset);
906 }
907 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
908 assert(_init_lock_offset != 0, "must be set");
909 java_class->obj_field_put(_init_lock_offset, init_lock);
910 }
911
912 objArrayOop java_lang_Class::signers(oop java_class) {
913 assert(_signers_offset != 0, "must be set");
914 return (objArrayOop)java_class->obj_field(_signers_offset);
915 }
916 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
917 assert(_signers_offset != 0, "must be set");
918 java_class->obj_field_put(_signers_offset, (oop)signers);
919 }
920
921
922 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
923 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
924 if (_class_loader_offset != 0) {
925 java_class->obj_field_put(_class_loader_offset, loader);
926 }
927 }
928
929 oop java_lang_Class::class_loader(oop java_class) {
930 assert(_class_loader_offset != 0, "must be set");
931 return java_class->obj_field(_class_loader_offset);
932 }
933
934 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
935 // This should be improved by adding a field at the Java level or by
936 // introducing a new VM klass (see comment in ClassFileParser)
937 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
938 if (type != T_VOID) {
939 Klass* aklass = Universe::typeArrayKlassObj(type);
940 assert(aklass != NULL, "correct bootstrap");
941 set_array_klass(java_class, aklass);
942 }
943 #ifdef ASSERT
944 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
945 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
946 #endif
947 return java_class;
948 }
949
950
951 Klass* java_lang_Class::as_Klass(oop java_class) {
952 //%note memory_2
953 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
954 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
955 assert(k == NULL || k->is_klass(), "type check");
956 return k;
957 }
958
959
960 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
961 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
962 java_class->metadata_field_put(_klass_offset, klass);
963 }
964
965
966 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
967 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
968 Symbol* name = NULL;
969 bool is_instance = false;
970 if (is_primitive(java_class)) {
971 name = vmSymbols::type_signature(primitive_type(java_class));
972 } else {
973 Klass* k = as_Klass(java_class);
974 is_instance = k->is_instance_klass();
975 name = k->name();
976 }
977 if (name == NULL) {
978 st->print("<null>");
979 return;
980 }
981 if (is_instance) st->print("L");
982 st->write((char*) name->base(), (int) name->utf8_length());
983 if (is_instance) st->print(";");
984 }
985
986 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
987 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
988 Symbol* name;
989 if (is_primitive(java_class)) {
990 name = vmSymbols::type_signature(primitive_type(java_class));
991 // Because this can create a new symbol, the caller has to decrement
992 // the refcount, so make adjustment here and below for symbols returned
993 // that are not created or incremented due to a successful lookup.
994 name->increment_refcount();
995 } else {
996 Klass* k = as_Klass(java_class);
997 if (!k->is_instance_klass()) {
998 name = k->name();
999 name->increment_refcount();
1000 } else {
1001 ResourceMark rm;
1002 const char* sigstr = k->signature_name();
1003 int siglen = (int) strlen(sigstr);
1004 if (!intern_if_not_found) {
1005 name = SymbolTable::probe(sigstr, siglen);
1006 } else {
1007 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
1008 }
1009 }
1010 }
1011 return name;
1012 }
1013
1014 // Returns the Java name for this Java mirror (Resource allocated)
1015 // See Klass::external_name().
1016 // For primitive type Java mirrors, its type name is returned.
1017 const char* java_lang_Class::as_external_name(oop java_class) {
1018 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1019 const char* name = NULL;
1020 if (is_primitive(java_class)) {
1021 name = type2name(primitive_type(java_class));
1022 } else {
1023 name = as_Klass(java_class)->external_name();
1024 }
1025 if (name == NULL) {
1026 name = "<null>";
1027 }
1028 return name;
1029 }
1030
1031 Klass* java_lang_Class::array_klass(oop java_class) {
1032 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1033 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1034 return k;
1035 }
1036
1037
1038 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
1039 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1040 java_class->metadata_field_put(_array_klass_offset, klass);
1041 }
1042
1043
1044 bool java_lang_Class::is_primitive(oop java_class) {
1045 // should assert:
1046 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1047 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
1048
1049 #ifdef ASSERT
1050 if (is_primitive) {
1051 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1052 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
1053 "Should be either the T_VOID primitive or a java primitive");
1054 }
1055 #endif
1056
1057 return is_primitive;
1058 }
1059
1060
1061 BasicType java_lang_Class::primitive_type(oop java_class) {
1062 assert(java_lang_Class::is_primitive(java_class), "just checking");
1063 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1064 BasicType type = T_VOID;
1065 if (ak != NULL) {
1066 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1067 type = ArrayKlass::cast(ak)->element_type();
1068 } else {
1069 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1070 }
1071 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1072 return type;
1073 }
1074
1075 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1076 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1077 if (is_primitive(java_class)) {
1078 if (reference_klass != NULL)
1079 (*reference_klass) = NULL;
1080 return primitive_type(java_class);
1081 } else {
1082 if (reference_klass != NULL)
1083 (*reference_klass) = as_Klass(java_class);
1084 return T_OBJECT;
1085 }
1086 }
1087
1088
1089 oop java_lang_Class::primitive_mirror(BasicType t) {
1090 oop mirror = Universe::java_mirror(t);
1091 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1092 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1093 return mirror;
1094 }
1095
1096 bool java_lang_Class::offsets_computed = false;
1097 int java_lang_Class::classRedefinedCount_offset = -1;
1098
1099 void java_lang_Class::compute_offsets() {
1100 assert(!offsets_computed, "offsets should be initialized only once");
1101 offsets_computed = true;
1102
1103 Klass* k = SystemDictionary::Class_klass();
1104 // The classRedefinedCount field is only present starting in 1.5,
1105 // so don't go fatal.
1106 compute_optional_offset(classRedefinedCount_offset,
1107 k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
1108
1109 // Needs to be optional because the old build runs Queens during bootstrapping
1110 // and jdk8-9 doesn't have coordinated pushes yet.
1111 compute_optional_offset(_class_loader_offset,
1112 k, vmSymbols::classLoader_name(),
1113 vmSymbols::classloader_signature());
1114
1115 compute_offset(_component_mirror_offset,
1116 k, vmSymbols::componentType_name(),
1117 vmSymbols::class_signature());
1118
1119 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1120 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1121 // GC treats them the same.
1122 _init_lock_offset = _component_mirror_offset;
1123
1124 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1125 }
1126
1127 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1128 if (classRedefinedCount_offset == -1) {
1129 // If we don't have an offset for it then just return -1 as a marker.
1130 return -1;
1131 }
1132
1133 return the_class_mirror->int_field(classRedefinedCount_offset);
1134 }
1135
1136 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1137 if (classRedefinedCount_offset == -1) {
1138 // If we don't have an offset for it then nothing to set.
1139 return;
1140 }
1141
1142 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1143 }
1144
1145
1146 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1147 // platform thread structure, and a eetop offset which was used for thread
1148 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1149 // merged, so in the HotSpot VM we just use the eetop field for the thread
1150 // instead of the privateInfo_offset.
1151 //
1152 // Note: The stackSize field is only present starting in 1.4.
1153
1154 int java_lang_Thread::_name_offset = 0;
1155 int java_lang_Thread::_group_offset = 0;
1156 int java_lang_Thread::_contextClassLoader_offset = 0;
1157 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1158 int java_lang_Thread::_priority_offset = 0;
1159 int java_lang_Thread::_eetop_offset = 0;
1160 int java_lang_Thread::_daemon_offset = 0;
1161 int java_lang_Thread::_stillborn_offset = 0;
1162 int java_lang_Thread::_stackSize_offset = 0;
1163 int java_lang_Thread::_tid_offset = 0;
1164 int java_lang_Thread::_thread_status_offset = 0;
1165 int java_lang_Thread::_park_blocker_offset = 0;
1166 int java_lang_Thread::_park_event_offset = 0 ;
1167
1168
1169 void java_lang_Thread::compute_offsets() {
1170 assert(_group_offset == 0, "offsets should be initialized only once");
1171
1172 Klass* k = SystemDictionary::Thread_klass();
1173 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1174 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
1175 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
1176 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
1177 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
1178 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1179 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
1180 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
1181 // The stackSize field is only present starting in 1.4, so don't go fatal.
1182 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
1183 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
1184 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
1185 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
1186 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
1187 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
1188 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
1189 vmSymbols::long_signature());
1190 }
1191
1192
1193 JavaThread* java_lang_Thread::thread(oop java_thread) {
1194 return (JavaThread*)java_thread->address_field(_eetop_offset);
1195 }
1196
1197
1198 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1199 java_thread->address_field_put(_eetop_offset, (address)thread);
1200 }
1201
1202
1203 oop java_lang_Thread::name(oop java_thread) {
1204 return java_thread->obj_field(_name_offset);
1205 }
1206
1207
1208 void java_lang_Thread::set_name(oop java_thread, oop name) {
1209 java_thread->obj_field_put(_name_offset, name);
1210 }
1211
1212
1213 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1214 return (ThreadPriority)java_thread->int_field(_priority_offset);
1215 }
1216
1217
1218 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1219 java_thread->int_field_put(_priority_offset, priority);
1220 }
1221
1222
1223 oop java_lang_Thread::threadGroup(oop java_thread) {
1224 return java_thread->obj_field(_group_offset);
1225 }
1226
1227
1228 bool java_lang_Thread::is_stillborn(oop java_thread) {
1229 return java_thread->bool_field(_stillborn_offset) != 0;
1230 }
1231
1232
1233 // We never have reason to turn the stillborn bit off
1234 void java_lang_Thread::set_stillborn(oop java_thread) {
1235 java_thread->bool_field_put(_stillborn_offset, true);
1236 }
1237
1238
1239 bool java_lang_Thread::is_alive(oop java_thread) {
1240 JavaThread* thr = java_lang_Thread::thread(java_thread);
1241 return (thr != NULL);
1242 }
1243
1244
1245 bool java_lang_Thread::is_daemon(oop java_thread) {
1246 return java_thread->bool_field(_daemon_offset) != 0;
1247 }
1248
1249
1250 void java_lang_Thread::set_daemon(oop java_thread) {
1251 java_thread->bool_field_put(_daemon_offset, true);
1252 }
1253
1254 oop java_lang_Thread::context_class_loader(oop java_thread) {
1255 return java_thread->obj_field(_contextClassLoader_offset);
1256 }
1257
1258 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1259 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1260 }
1261
1262
1263 jlong java_lang_Thread::stackSize(oop java_thread) {
1264 if (_stackSize_offset > 0) {
1265 return java_thread->long_field(_stackSize_offset);
1266 } else {
1267 return 0;
1268 }
1269 }
1270
1271 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1272 void java_lang_Thread::set_thread_status(oop java_thread,
1273 java_lang_Thread::ThreadStatus status) {
1274 // The threadStatus is only present starting in 1.5
1275 if (_thread_status_offset > 0) {
1276 java_thread->int_field_put(_thread_status_offset, status);
1277 }
1278 }
1279
1280 // Read thread status value from threadStatus field in java.lang.Thread java class.
1281 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1282 assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() ||
1283 JavaThread::current()->thread_state() == _thread_in_vm,
1284 "Java Thread is not running in vm");
1285 // The threadStatus is only present starting in 1.5
1286 if (_thread_status_offset > 0) {
1287 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1288 } else {
1289 // All we can easily figure out is if it is alive, but that is
1290 // enough info for a valid unknown status.
1291 // These aren't restricted to valid set ThreadStatus values, so
1292 // use JVMTI values and cast.
1293 JavaThread* thr = java_lang_Thread::thread(java_thread);
1294 if (thr == NULL) {
1295 // the thread hasn't run yet or is in the process of exiting
1296 return NEW;
1297 }
1298 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1299 }
1300 }
1301
1302
1303 jlong java_lang_Thread::thread_id(oop java_thread) {
1304 // The thread ID field is only present starting in 1.5
1305 if (_tid_offset > 0) {
1306 return java_thread->long_field(_tid_offset);
1307 } else {
1308 return 0;
1309 }
1310 }
1311
1312 oop java_lang_Thread::park_blocker(oop java_thread) {
1313 assert(JDK_Version::current().supports_thread_park_blocker() &&
1314 _park_blocker_offset != 0, "Must support parkBlocker field");
1315
1316 if (_park_blocker_offset > 0) {
1317 return java_thread->obj_field(_park_blocker_offset);
1318 }
1319
1320 return NULL;
1321 }
1322
1323 jlong java_lang_Thread::park_event(oop java_thread) {
1324 if (_park_event_offset > 0) {
1325 return java_thread->long_field(_park_event_offset);
1326 }
1327 return 0;
1328 }
1329
1330 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1331 if (_park_event_offset > 0) {
1332 java_thread->long_field_put(_park_event_offset, ptr);
1333 return true;
1334 }
1335 return false;
1336 }
1337
1338
1339 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1340 assert(_thread_status_offset != 0, "Must have thread status");
1341 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1342 switch (status) {
1343 case NEW : return "NEW";
1344 case RUNNABLE : return "RUNNABLE";
1345 case SLEEPING : return "TIMED_WAITING (sleeping)";
1346 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1347 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1348 case PARKED : return "WAITING (parking)";
1349 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1350 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1351 case TERMINATED : return "TERMINATED";
1352 default : return "UNKNOWN";
1353 };
1354 }
1355 int java_lang_ThreadGroup::_parent_offset = 0;
1356 int java_lang_ThreadGroup::_name_offset = 0;
1357 int java_lang_ThreadGroup::_threads_offset = 0;
1358 int java_lang_ThreadGroup::_groups_offset = 0;
1359 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1360 int java_lang_ThreadGroup::_destroyed_offset = 0;
1361 int java_lang_ThreadGroup::_daemon_offset = 0;
1362 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1363 int java_lang_ThreadGroup::_nthreads_offset = 0;
1364 int java_lang_ThreadGroup::_ngroups_offset = 0;
1365
1366 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1367 assert(java_thread_group->is_oop(), "thread group must be oop");
1368 return java_thread_group->obj_field(_parent_offset);
1369 }
1370
1371 // ("name as oop" accessor is not necessary)
1372
1373 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1374 oop name = java_thread_group->obj_field(_name_offset);
1375 // ThreadGroup.name can be null
1376 if (name != NULL) {
1377 return java_lang_String::as_utf8_string(name);
1378 }
1379 return NULL;
1380 }
1381
1382 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1383 assert(java_thread_group->is_oop(), "thread group must be oop");
1384 return java_thread_group->int_field(_nthreads_offset);
1385 }
1386
1387 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1388 oop threads = java_thread_group->obj_field(_threads_offset);
1389 assert(threads != NULL, "threadgroups should have threads");
1390 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1391 return objArrayOop(threads);
1392 }
1393
1394 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1395 assert(java_thread_group->is_oop(), "thread group must be oop");
1396 return java_thread_group->int_field(_ngroups_offset);
1397 }
1398
1399 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1400 oop groups = java_thread_group->obj_field(_groups_offset);
1401 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1402 return objArrayOop(groups);
1403 }
1404
1405 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1406 assert(java_thread_group->is_oop(), "thread group must be oop");
1407 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1408 }
1409
1410 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1411 assert(java_thread_group->is_oop(), "thread group must be oop");
1412 return java_thread_group->bool_field(_destroyed_offset) != 0;
1413 }
1414
1415 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1416 assert(java_thread_group->is_oop(), "thread group must be oop");
1417 return java_thread_group->bool_field(_daemon_offset) != 0;
1418 }
1419
1420 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1421 assert(java_thread_group->is_oop(), "thread group must be oop");
1422 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1423 }
1424
1425 void java_lang_ThreadGroup::compute_offsets() {
1426 assert(_parent_offset == 0, "offsets should be initialized only once");
1427
1428 Klass* k = SystemDictionary::ThreadGroup_klass();
1429
1430 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1431 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1432 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1433 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1434 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1435 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1436 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1437 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1438 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1439 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1440 }
1441
1442
1443 void java_lang_Throwable::compute_offsets() {
1444 Klass* k = SystemDictionary::Throwable_klass();
1445 compute_offset(depth_offset, k, vmSymbols::depth_name(), vmSymbols::int_signature());
1446 }
1447
1448 oop java_lang_Throwable::unassigned_stacktrace() {
1449 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1450 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1451 if (UseCompressedOops) {
1452 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1453 } else {
1454 return oopDesc::load_decode_heap_oop((oop*)addr);
1455 }
1456 }
1457
1458 oop java_lang_Throwable::backtrace(oop throwable) {
1459 return throwable->obj_field_acquire(backtrace_offset);
1460 }
1461
1462
1463 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1464 throwable->release_obj_field_put(backtrace_offset, value);
1465 }
1466
1467 int java_lang_Throwable::depth(oop throwable) {
1468 return throwable->int_field(depth_offset);
1469 }
1470
1471 void java_lang_Throwable::set_depth(oop throwable, int value) {
1472 throwable->int_field_put(depth_offset, value);
1473 }
1474
1475 oop java_lang_Throwable::message(Handle throwable) {
1476 return throwable->obj_field(detailMessage_offset);
1477 }
1478
1479
1480 // Return Symbol for detailed_message or NULL
1481 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1482 PRESERVE_EXCEPTION_MARK; // Keep original exception
1483 oop detailed_message = java_lang_Throwable::message(throwable);
1484 if (detailed_message != NULL) {
1485 return java_lang_String::as_symbol(detailed_message, THREAD);
1486 }
1487 return NULL;
1488 }
1489
1490 void java_lang_Throwable::set_message(oop throwable, oop value) {
1491 throwable->obj_field_put(detailMessage_offset, value);
1492 }
1493
1494
1495 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1496 throwable->obj_field_put(stackTrace_offset, st_element_array);
1497 }
1498
1499 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1500 set_stacktrace(throwable, NULL);
1501 }
1502
1503
1504 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1505 ResourceMark rm;
1506 Klass* k = throwable->klass();
1507 assert(k != NULL, "just checking");
1508 st->print("%s", k->external_name());
1509 oop msg = message(throwable);
1510 if (msg != NULL) {
1511 st->print(": %s", java_lang_String::as_utf8_string(msg));
1512 }
1513 }
1514
1515 // After this many redefines, the stack trace is unreliable.
1516 const int MAX_VERSION = USHRT_MAX;
1517
1518 static inline bool version_matches(Method* method, int version) {
1519 assert(version < MAX_VERSION, "version is too big");
1520 return method != NULL && (method->constants()->version() == version);
1521 }
1522
1523
1524 // This class provides a simple wrapper over the internal structure of
1525 // exception backtrace to insulate users of the backtrace from needing
1526 // to know what it looks like.
1527 class BacktraceBuilder: public StackObj {
1528 friend class BacktraceIterator;
1529 private:
1530 Handle _backtrace;
1531 objArrayOop _head;
1532 typeArrayOop _methods;
1533 typeArrayOop _bcis;
1534 objArrayOop _mirrors;
1535 typeArrayOop _cprefs; // needed to insulate method name against redefinition
1536 int _index;
1537 NoSafepointVerifier _nsv;
1538
1539 enum {
1540 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1541 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1542 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1543 trace_cprefs_offset = java_lang_Throwable::trace_cprefs_offset,
1544 trace_next_offset = java_lang_Throwable::trace_next_offset,
1545 trace_size = java_lang_Throwable::trace_size,
1546 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1547 };
1548
1549 // get info out of chunks
1550 static typeArrayOop get_methods(objArrayHandle chunk) {
1551 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1552 assert(methods != NULL, "method array should be initialized in backtrace");
1553 return methods;
1554 }
1555 static typeArrayOop get_bcis(objArrayHandle chunk) {
1556 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1557 assert(bcis != NULL, "bci array should be initialized in backtrace");
1558 return bcis;
1559 }
1560 static objArrayOop get_mirrors(objArrayHandle chunk) {
1561 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1562 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1563 return mirrors;
1564 }
1565 static typeArrayOop get_cprefs(objArrayHandle chunk) {
1566 typeArrayOop cprefs = typeArrayOop(chunk->obj_at(trace_cprefs_offset));
1567 assert(cprefs != NULL, "cprefs array should be initialized in backtrace");
1568 return cprefs;
1569 }
1570
1571 public:
1572
1573 // constructor for new backtrace
1574 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _cprefs(NULL) {
1575 expand(CHECK);
1576 _backtrace = _head;
1577 _index = 0;
1578 }
1579
1580 BacktraceBuilder(objArrayHandle backtrace) {
1581 _methods = get_methods(backtrace);
1582 _bcis = get_bcis(backtrace);
1583 _mirrors = get_mirrors(backtrace);
1584 _cprefs = get_cprefs(backtrace);
1585 assert(_methods->length() == _bcis->length() &&
1586 _methods->length() == _mirrors->length(),
1587 "method and source information arrays should match");
1588
1589 // head is the preallocated backtrace
1590 _backtrace = _head = backtrace();
1591 _index = 0;
1592 }
1593
1594 void expand(TRAPS) {
1595 objArrayHandle old_head(THREAD, _head);
1596 PauseNoSafepointVerifier pnsv(&_nsv);
1597
1598 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1599 objArrayHandle new_head(THREAD, head);
1600
1601 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1602 typeArrayHandle new_methods(THREAD, methods);
1603
1604 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1605 typeArrayHandle new_bcis(THREAD, bcis);
1606
1607 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1608 objArrayHandle new_mirrors(THREAD, mirrors);
1609
1610 typeArrayOop cprefs = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1611 typeArrayHandle new_cprefs(THREAD, cprefs);
1612
1613 if (!old_head.is_null()) {
1614 old_head->obj_at_put(trace_next_offset, new_head());
1615 }
1616 new_head->obj_at_put(trace_methods_offset, new_methods());
1617 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1618 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1619 new_head->obj_at_put(trace_cprefs_offset, new_cprefs());
1620
1621 _head = new_head();
1622 _methods = new_methods();
1623 _bcis = new_bcis();
1624 _mirrors = new_mirrors();
1625 _cprefs = new_cprefs();
1626 _index = 0;
1627 }
1628
1629 oop backtrace() {
1630 return _backtrace();
1631 }
1632
1633 inline void push(Method* method, int bci, TRAPS) {
1634 // Smear the -1 bci to 0 since the array only holds unsigned
1635 // shorts. The later line number lookup would just smear the -1
1636 // to a 0 even if it could be recorded.
1637 if (bci == SynchronizationEntryBCI) bci = 0;
1638
1639 if (_index >= trace_chunk_size) {
1640 methodHandle mhandle(THREAD, method);
1641 expand(CHECK);
1642 method = mhandle();
1643 }
1644
1645 _methods->short_at_put(_index, method->orig_method_idnum());
1646 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
1647 _cprefs->short_at_put(_index, method->name_index());
1648
1649 // We need to save the mirrors in the backtrace to keep the class
1650 // from being unloaded while we still have this stack trace.
1651 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1652 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1653 _index++;
1654 }
1655
1656 };
1657
1658 struct BacktraceElement : public StackObj {
1659 int _method_id;
1660 int _bci;
1661 int _version;
1662 int _cpref;
1663 Handle _mirror;
1664 BacktraceElement(Handle mirror, int mid, int version, int bci, int cpref) :
1665 _mirror(mirror), _method_id(mid), _version(version), _bci(bci), _cpref(cpref) {}
1666 };
1667
1668 class BacktraceIterator : public StackObj {
1669 int _index;
1670 objArrayHandle _result;
1671 objArrayHandle _mirrors;
1672 typeArrayHandle _methods;
1673 typeArrayHandle _bcis;
1674 typeArrayHandle _cprefs;
1675
1676 void init(objArrayHandle result, Thread* thread) {
1677 // Get method id, bci, version and mirror from chunk
1678 _result = result;
1679 if (_result.not_null()) {
1680 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
1681 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
1682 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
1683 _cprefs = typeArrayHandle(thread, BacktraceBuilder::get_cprefs(_result));
1684 _index = 0;
1685 }
1686 }
1687 public:
1688 BacktraceIterator(objArrayHandle result, Thread* thread) {
1689 init(result, thread);
1690 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
1691 }
1692
1693 BacktraceElement next(Thread* thread) {
1694 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
1695 _methods->short_at(_index),
1696 Backtrace::version_at(_bcis->int_at(_index)),
1697 Backtrace::bci_at(_bcis->int_at(_index)),
1698 _cprefs->short_at(_index));
1699 _index++;
1700
1701 if (_index >= java_lang_Throwable::trace_chunk_size) {
1702 int next_offset = java_lang_Throwable::trace_next_offset;
1703 // Get next chunk
1704 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
1705 init(result, thread);
1706 }
1707 return e;
1708 }
1709
1710 bool repeat() {
1711 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
1712 }
1713 };
1714
1715
1716 // Print stack trace element to resource allocated buffer
1717 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
1718 int version, int bci, int cpref) {
1719 ResourceMark rm;
1720
1721 // Get strings and string lengths
1722 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1723 const char* klass_name = holder->external_name();
1724 int buf_len = (int)strlen(klass_name);
1725
1726 Method* method = holder->method_with_orig_idnum(method_id, version);
1727
1728 // The method can be NULL if the requested class version is gone
1729 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
1730 char* method_name = sym->as_C_string();
1731 buf_len += (int)strlen(method_name);
1732
1733 char* source_file_name = NULL;
1734 Symbol* source = Backtrace::get_source_file_name(holder, version);
1735 if (source != NULL) {
1736 source_file_name = source->as_C_string();
1737 buf_len += (int)strlen(source_file_name);
1738 }
1739
1740 // Allocate temporary buffer with extra space for formatting and line number
1741 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1742
1743 // Print stack trace line in buffer
1744 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1745
1746 if (!version_matches(method, version)) {
1747 strcat(buf, "(Redefined)");
1748 } else {
1749 int line_number = Backtrace::get_line_number(method, bci);
1750 if (line_number == -2) {
1751 strcat(buf, "(Native Method)");
1752 } else {
1753 if (source_file_name != NULL && (line_number != -1)) {
1754 // Sourcename and linenumber
1755 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1756 } else if (source_file_name != NULL) {
1757 // Just sourcename
1758 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1759 } else {
1760 // Neither sourcename nor linenumber
1761 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1762 }
1763 nmethod* nm = method->code();
1764 if (WizardMode && nm != NULL) {
1765 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1766 }
1767 }
1768 }
1769
1770 st->print_cr("%s", buf);
1771 }
1772
1773
1774 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
1775 Handle mirror = method->method_holder()->java_mirror();
1776 int method_id = method->orig_method_idnum();
1777 int version = method->constants()->version();
1778 int cpref = method->name_index();
1779 print_stack_element_to_stream(st, mirror, method_id, version, bci, cpref);
1780 }
1781
1782 /**
1783 * Print the throwable message and its stack trace plus all causes by walking the
1784 * cause chain. The output looks the same as of Throwable.printStackTrace().
1785 */
1786 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
1787 // First, print the message.
1788 print(throwable, st);
1789 st->cr();
1790
1791 // Now print the stack trace.
1792 Thread* THREAD = Thread::current();
1793 while (throwable.not_null()) {
1794 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
1795 if (result.is_null()) {
1796 st->print_raw_cr("\t<<no stack trace available>>");
1797 return;
1798 }
1799 BacktraceIterator iter(result, THREAD);
1800
1801 while (iter.repeat()) {
1802 BacktraceElement bte = iter.next(THREAD);
1803 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._cpref);
1804 }
1805 {
1806 // Call getCause() which doesn't necessarily return the _cause field.
1807 EXCEPTION_MARK;
1808 JavaValue cause(T_OBJECT);
1809 JavaCalls::call_virtual(&cause,
1810 throwable,
1811 KlassHandle(THREAD, throwable->klass()),
1812 vmSymbols::getCause_name(),
1813 vmSymbols::void_throwable_signature(),
1814 THREAD);
1815 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1816 if (HAS_PENDING_EXCEPTION) {
1817 CLEAR_PENDING_EXCEPTION;
1818 throwable = Handle();
1819 } else {
1820 throwable = Handle(THREAD, (oop) cause.get_jobject());
1821 if (throwable.not_null()) {
1822 st->print("Caused by: ");
1823 print(throwable, st);
1824 st->cr();
1825 }
1826 }
1827 }
1828 }
1829 }
1830
1831 /**
1832 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
1833 */
1834 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
1835 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
1836 JavaValue result(T_VOID);
1837 JavaCalls::call_virtual(&result,
1838 throwable,
1839 KlassHandle(THREAD, SystemDictionary::Throwable_klass()),
1840 vmSymbols::printStackTrace_name(),
1841 vmSymbols::void_method_signature(),
1842 THREAD);
1843 }
1844
1845 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
1846 if (!StackTraceInThrowable) return;
1847 ResourceMark rm(THREAD);
1848
1849 // Start out by clearing the backtrace for this object, in case the VM
1850 // runs out of memory while allocating the stack trace
1851 set_backtrace(throwable(), NULL);
1852 // Clear lazily constructed Java level stacktrace if refilling occurs
1853 // This is unnecessary in 1.7+ but harmless
1854 clear_stacktrace(throwable());
1855
1856 int max_depth = MaxJavaStackTraceDepth;
1857 JavaThread* thread = (JavaThread*)THREAD;
1858
1859 BacktraceBuilder bt(CHECK);
1860
1861 // If there is no Java frame just return the method that was being called
1862 // with bci 0
1863 if (!thread->has_last_Java_frame()) {
1864 if (max_depth >= 1 && method() != NULL) {
1865 bt.push(method(), 0, CHECK);
1866 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
1867 set_depth(throwable(), 1);
1868 set_backtrace(throwable(), bt.backtrace());
1869 }
1870 return;
1871 }
1872
1873 // Instead of using vframe directly, this version of fill_in_stack_trace
1874 // basically handles everything by hand. This significantly improved the
1875 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1876 // See bug 6333838 for more details.
1877 // The "ASSERT" here is to verify this method generates the exactly same stack
1878 // trace as utilizing vframe.
1879 #ifdef ASSERT
1880 vframeStream st(thread);
1881 methodHandle st_method(THREAD, st.method());
1882 #endif
1883 int total_count = 0;
1884 RegisterMap map(thread, false);
1885 int decode_offset = 0;
1886 nmethod* nm = NULL;
1887 bool skip_fillInStackTrace_check = false;
1888 bool skip_throwableInit_check = false;
1889 bool skip_hidden = !ShowHiddenFrames;
1890
1891 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1892 Method* method = NULL;
1893 int bci = 0;
1894
1895 // Compiled java method case.
1896 if (decode_offset != 0) {
1897 DebugInfoReadStream stream(nm, decode_offset);
1898 decode_offset = stream.read_int();
1899 method = (Method*)nm->metadata_at(stream.read_int());
1900 bci = stream.read_bci();
1901 } else {
1902 if (fr.is_first_frame()) break;
1903 address pc = fr.pc();
1904 if (fr.is_interpreted_frame()) {
1905 address bcp = fr.interpreter_frame_bcp();
1906 method = fr.interpreter_frame_method();
1907 bci = method->bci_from(bcp);
1908 fr = fr.sender(&map);
1909 } else {
1910 CodeBlob* cb = fr.cb();
1911 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1912 // but non nmethod
1913 fr = fr.sender(&map);
1914 if (cb == NULL || !cb->is_nmethod()) {
1915 continue;
1916 }
1917 nm = (nmethod*)cb;
1918 if (nm->method()->is_native()) {
1919 method = nm->method();
1920 bci = 0;
1921 } else {
1922 PcDesc* pd = nm->pc_desc_at(pc);
1923 decode_offset = pd->scope_decode_offset();
1924 // if decode_offset is not equal to 0, it will execute the
1925 // "compiled java method case" at the beginning of the loop.
1926 continue;
1927 }
1928 }
1929 }
1930 #ifdef ASSERT
1931 assert(st_method() == method && st.bci() == bci,
1932 "Wrong stack trace");
1933 st.next();
1934 // vframeStream::method isn't GC-safe so store off a copy
1935 // of the Method* in case we GC.
1936 if (!st.at_end()) {
1937 st_method = st.method();
1938 }
1939 #endif
1940
1941 // the format of the stacktrace will be:
1942 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1943 // - 0 or more <init> methods for the exception class (skipped)
1944 // - rest of the stack
1945
1946 if (!skip_fillInStackTrace_check) {
1947 if (method->name() == vmSymbols::fillInStackTrace_name() &&
1948 throwable->is_a(method->method_holder())) {
1949 continue;
1950 }
1951 else {
1952 skip_fillInStackTrace_check = true; // gone past them all
1953 }
1954 }
1955 if (!skip_throwableInit_check) {
1956 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1957
1958 // skip <init> methods of the exception class and superclasses
1959 // This is simlar to classic VM.
1960 if (method->name() == vmSymbols::object_initializer_name() &&
1961 throwable->is_a(method->method_holder())) {
1962 continue;
1963 } else {
1964 // there are none or we've seen them all - either way stop checking
1965 skip_throwableInit_check = true;
1966 }
1967 }
1968 if (method->is_hidden()) {
1969 if (skip_hidden) continue;
1970 }
1971 bt.push(method, bci, CHECK);
1972 total_count++;
1973 }
1974
1975 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
1976
1977 // Put completed stack trace into throwable object
1978 set_backtrace(throwable(), bt.backtrace());
1979 set_depth(throwable(), total_count);
1980 }
1981
1982 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
1983 // No-op if stack trace is disabled
1984 if (!StackTraceInThrowable) {
1985 return;
1986 }
1987
1988 // Disable stack traces for some preallocated out of memory errors
1989 if (!Universe::should_fill_in_stack_trace(throwable)) {
1990 return;
1991 }
1992
1993 PRESERVE_EXCEPTION_MARK;
1994
1995 JavaThread* thread = JavaThread::active();
1996 fill_in_stack_trace(throwable, method, thread);
1997 // ignore exceptions thrown during stack trace filling
1998 CLEAR_PENDING_EXCEPTION;
1999 }
2000
2001 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2002 // Allocate stack trace - backtrace is created but not filled in
2003
2004 // No-op if stack trace is disabled
2005 if (!StackTraceInThrowable) return;
2006 BacktraceBuilder bt(CHECK); // creates a backtrace
2007 set_backtrace(throwable(), bt.backtrace());
2008 }
2009
2010
2011 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2012 // Fill in stack trace into preallocated backtrace (no GC)
2013
2014 // No-op if stack trace is disabled
2015 if (!StackTraceInThrowable) return;
2016
2017 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2018
2019 JavaThread* THREAD = JavaThread::current();
2020
2021 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2022 assert(backtrace.not_null(), "backtrace should have been preallocated");
2023
2024 ResourceMark rm(THREAD);
2025 vframeStream st(THREAD);
2026
2027 BacktraceBuilder bt(backtrace);
2028
2029 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2030 // methods as preallocated errors aren't created by "java" code.
2031
2032 // fill in as much stack trace as possible
2033 int chunk_count = 0;
2034 for (;!st.at_end(); st.next()) {
2035 bt.push(st.method(), st.bci(), CHECK);
2036 chunk_count++;
2037
2038 // Bail-out for deep stacks
2039 if (chunk_count >= trace_chunk_size) break;
2040 }
2041 set_depth(throwable(), chunk_count);
2042 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2043
2044 // We support the Throwable immutability protocol defined for Java 7.
2045 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2046 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2047 }
2048
2049 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2050 objArrayHandle stack_trace_array_h, TRAPS) {
2051
2052 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2053 THROW(vmSymbols::java_lang_NullPointerException());
2054 }
2055
2056 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2057
2058 if (stack_trace_array_h->length() != depth(throwable())) {
2059 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2060 }
2061
2062 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2063 BacktraceIterator iter(result, THREAD);
2064
2065 int index = 0;
2066 while (iter.repeat()) {
2067 BacktraceElement bte = iter.next(THREAD);
2068
2069 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2070
2071 if (stack_trace_element.is_null()) {
2072 THROW(vmSymbols::java_lang_NullPointerException());
2073 }
2074
2075 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2076 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2077
2078 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2079 method,
2080 bte._version,
2081 bte._bci,
2082 bte._cpref, CHECK);
2083 }
2084 }
2085
2086 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2087 // Allocate java.lang.StackTraceElement instance
2088 Klass* k = SystemDictionary::StackTraceElement_klass();
2089 assert(k != NULL, "must be loaded in 1.4+");
2090 instanceKlassHandle ik (THREAD, k);
2091 if (ik->should_be_initialized()) {
2092 ik->initialize(CHECK_0);
2093 }
2094
2095 Handle element = ik->allocate_instance_handle(CHECK_0);
2096
2097 int cpref = method->name_index();
2098 int version = method->constants()->version();
2099 fill_in(element, method->method_holder(), method, version, bci, cpref, CHECK_0);
2100 return element();
2101 }
2102
2103 void java_lang_StackTraceElement::fill_in(Handle element,
2104 InstanceKlass* holder, const methodHandle& method,
2105 int version, int bci, int cpref, TRAPS) {
2106 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2107
2108 // Fill in class name
2109 ResourceMark rm(THREAD);
2110 const char* str = holder->external_name();
2111 oop classname = StringTable::intern((char*) str, CHECK);
2112 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2113
2114 // The method can be NULL if the requested class version is gone
2115 Symbol* sym = !method.is_null() ? method->name() : holder->constants()->symbol_at(cpref);
2116
2117 // Fill in method name
2118 oop methodname = StringTable::intern(sym, CHECK);
2119 java_lang_StackTraceElement::set_methodName(element(), methodname);
2120
2121 if (!version_matches(method(), version)) {
2122 // The method was redefined, accurate line number information isn't available
2123 java_lang_StackTraceElement::set_fileName(element(), NULL);
2124 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2125 } else {
2126 // Fill in source file name and line number.
2127 Symbol* source = Backtrace::get_source_file_name(holder, version);
2128 if (ShowHiddenFrames && source == NULL)
2129 source = vmSymbols::unknown_class_name();
2130 oop filename = StringTable::intern(source, CHECK);
2131 java_lang_StackTraceElement::set_fileName(element(), filename);
2132
2133 int line_number = Backtrace::get_line_number(method, bci);
2134 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2135 }
2136 }
2137
2138 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2139 if (MemberNameInStackFrame) {
2140 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2141 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2142 // we should expand MemberName::name when Throwable uses StackTrace
2143 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2144 return method;
2145 } else {
2146 short mid = stackFrame->short_field(_mid_offset);
2147 short version = stackFrame->short_field(_version_offset);
2148 return holder->method_with_orig_idnum(mid, version);
2149 }
2150 }
2151
2152 Symbol* java_lang_StackFrameInfo::get_file_name(Handle stackFrame, InstanceKlass* holder) {
2153 if (MemberNameInStackFrame) {
2154 return holder->source_file_name();
2155 } else {
2156 short version = stackFrame->short_field(_version_offset);
2157 return Backtrace::get_source_file_name(holder, version);
2158 }
2159 }
2160
2161 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci) {
2162 // set Method* or mid/cpref
2163 if (MemberNameInStackFrame) {
2164 oop mname = stackFrame->obj_field(_memberName_offset);
2165 InstanceKlass* ik = method->method_holder();
2166 CallInfo info(method(), ik);
2167 MethodHandles::init_method_MemberName(mname, info);
2168 } else {
2169 int mid = method->orig_method_idnum();
2170 int cpref = method->name_index();
2171 assert((jushort)mid == mid, "mid should be short");
2172 assert((jushort)cpref == cpref, "cpref should be short");
2173 java_lang_StackFrameInfo::set_mid(stackFrame(), (short)mid);
2174 java_lang_StackFrameInfo::set_cpref(stackFrame(), (short)cpref);
2175 }
2176 // set bci
2177 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2178 // method may be redefined; store the version
2179 int version = method->constants()->version();
2180 assert((jushort)version == version, "version should be short");
2181 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2182 }
2183
2184 void java_lang_StackFrameInfo::fill_methodInfo(Handle stackFrame, TRAPS) {
2185 ResourceMark rm(THREAD);
2186 oop k = stackFrame->obj_field(_declaringClass_offset);
2187 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(k));
2188 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2189 int bci = stackFrame->int_field(_bci_offset);
2190
2191 // The method can be NULL if the requested class version is gone
2192 Symbol* sym = (method != NULL) ? method->name() : NULL;
2193 if (MemberNameInStackFrame) {
2194 assert(sym != NULL, "MemberName must have method name");
2195 } else {
2196 // The method can be NULL if the requested class version is gone
2197 if (sym == NULL) {
2198 short cpref = stackFrame->short_field(_cpref_offset);
2199 sym = holder->constants()->symbol_at(cpref);
2200 }
2201 }
2202
2203 // set method name
2204 oop methodname = StringTable::intern(sym, CHECK);
2205 java_lang_StackFrameInfo::set_methodName(stackFrame(), methodname);
2206
2207 // set file name and line number
2208 Symbol* source = get_file_name(stackFrame, holder);
2209 if (source != NULL) {
2210 oop filename = StringTable::intern(source, CHECK);
2211 java_lang_StackFrameInfo::set_fileName(stackFrame(), filename);
2212 }
2213
2214 // if the method has been redefined, the bci is no longer applicable
2215 short version = stackFrame->short_field(_version_offset);
2216 if (version_matches(method, version)) {
2217 int line_number = Backtrace::get_line_number(method, bci);
2218 java_lang_StackFrameInfo::set_lineNumber(stackFrame(), line_number);
2219 }
2220 }
2221
2222 void java_lang_StackFrameInfo::compute_offsets() {
2223 Klass* k = SystemDictionary::StackFrameInfo_klass();
2224 compute_offset(_declaringClass_offset, k, vmSymbols::declaringClass_name(), vmSymbols::class_signature());
2225 compute_offset(_memberName_offset, k, vmSymbols::memberName_name(), vmSymbols::object_signature());
2226 compute_offset(_bci_offset, k, vmSymbols::bci_name(), vmSymbols::int_signature());
2227 compute_offset(_methodName_offset, k, vmSymbols::methodName_name(), vmSymbols::string_signature());
2228 compute_offset(_fileName_offset, k, vmSymbols::fileName_name(), vmSymbols::string_signature());
2229 compute_offset(_lineNumber_offset, k, vmSymbols::lineNumber_name(), vmSymbols::int_signature());
2230 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2231 }
2232
2233 void java_lang_LiveStackFrameInfo::compute_offsets() {
2234 Klass* k = SystemDictionary::LiveStackFrameInfo_klass();
2235 compute_offset(_monitors_offset, k, vmSymbols::monitors_name(), vmSymbols::object_array_signature());
2236 compute_offset(_locals_offset, k, vmSymbols::locals_name(), vmSymbols::object_array_signature());
2237 compute_offset(_operands_offset, k, vmSymbols::operands_name(), vmSymbols::object_array_signature());
2238 }
2239
2240 void java_lang_reflect_AccessibleObject::compute_offsets() {
2241 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
2242 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
2243 }
2244
2245 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2246 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2247 return (jboolean) reflect->bool_field(override_offset);
2248 }
2249
2250 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2251 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2252 reflect->bool_field_put(override_offset, (int) value);
2253 }
2254
2255 void java_lang_reflect_Method::compute_offsets() {
2256 Klass* k = SystemDictionary::reflect_Method_klass();
2257 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2258 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2259 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
2260 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2261 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2262 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2263 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2264 // The generic signature and annotations fields are only present in 1.5
2265 signature_offset = -1;
2266 annotations_offset = -1;
2267 parameter_annotations_offset = -1;
2268 annotation_default_offset = -1;
2269 type_annotations_offset = -1;
2270 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2271 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2272 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2273 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
2274 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2275 }
2276
2277 Handle java_lang_reflect_Method::create(TRAPS) {
2278 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2279 Klass* klass = SystemDictionary::reflect_Method_klass();
2280 // This class is eagerly initialized during VM initialization, since we keep a refence
2281 // to one of the methods
2282 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2283 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2284 }
2285
2286 oop java_lang_reflect_Method::clazz(oop reflect) {
2287 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2288 return reflect->obj_field(clazz_offset);
2289 }
2290
2291 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2292 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2293 reflect->obj_field_put(clazz_offset, value);
2294 }
2295
2296 int java_lang_reflect_Method::slot(oop reflect) {
2297 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2298 return reflect->int_field(slot_offset);
2299 }
2300
2301 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2302 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2303 reflect->int_field_put(slot_offset, value);
2304 }
2305
2306 oop java_lang_reflect_Method::name(oop method) {
2307 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2308 return method->obj_field(name_offset);
2309 }
2310
2311 void java_lang_reflect_Method::set_name(oop method, oop value) {
2312 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2313 method->obj_field_put(name_offset, value);
2314 }
2315
2316 oop java_lang_reflect_Method::return_type(oop method) {
2317 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2318 return method->obj_field(returnType_offset);
2319 }
2320
2321 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2322 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2323 method->obj_field_put(returnType_offset, value);
2324 }
2325
2326 oop java_lang_reflect_Method::parameter_types(oop method) {
2327 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2328 return method->obj_field(parameterTypes_offset);
2329 }
2330
2331 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2332 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2333 method->obj_field_put(parameterTypes_offset, value);
2334 }
2335
2336 oop java_lang_reflect_Method::exception_types(oop method) {
2337 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2338 return method->obj_field(exceptionTypes_offset);
2339 }
2340
2341 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2342 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2343 method->obj_field_put(exceptionTypes_offset, value);
2344 }
2345
2346 int java_lang_reflect_Method::modifiers(oop method) {
2347 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2348 return method->int_field(modifiers_offset);
2349 }
2350
2351 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2352 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2353 method->int_field_put(modifiers_offset, value);
2354 }
2355
2356 bool java_lang_reflect_Method::has_signature_field() {
2357 return (signature_offset >= 0);
2358 }
2359
2360 oop java_lang_reflect_Method::signature(oop method) {
2361 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2362 assert(has_signature_field(), "signature field must be present");
2363 return method->obj_field(signature_offset);
2364 }
2365
2366 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2367 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2368 assert(has_signature_field(), "signature field must be present");
2369 method->obj_field_put(signature_offset, value);
2370 }
2371
2372 bool java_lang_reflect_Method::has_annotations_field() {
2373 return (annotations_offset >= 0);
2374 }
2375
2376 oop java_lang_reflect_Method::annotations(oop method) {
2377 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2378 assert(has_annotations_field(), "annotations field must be present");
2379 return method->obj_field(annotations_offset);
2380 }
2381
2382 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2383 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2384 assert(has_annotations_field(), "annotations field must be present");
2385 method->obj_field_put(annotations_offset, value);
2386 }
2387
2388 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2389 return (parameter_annotations_offset >= 0);
2390 }
2391
2392 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2393 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2394 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2395 return method->obj_field(parameter_annotations_offset);
2396 }
2397
2398 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2399 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2400 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2401 method->obj_field_put(parameter_annotations_offset, value);
2402 }
2403
2404 bool java_lang_reflect_Method::has_annotation_default_field() {
2405 return (annotation_default_offset >= 0);
2406 }
2407
2408 oop java_lang_reflect_Method::annotation_default(oop method) {
2409 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2410 assert(has_annotation_default_field(), "annotation default field must be present");
2411 return method->obj_field(annotation_default_offset);
2412 }
2413
2414 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2415 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2416 assert(has_annotation_default_field(), "annotation default field must be present");
2417 method->obj_field_put(annotation_default_offset, value);
2418 }
2419
2420 bool java_lang_reflect_Method::has_type_annotations_field() {
2421 return (type_annotations_offset >= 0);
2422 }
2423
2424 oop java_lang_reflect_Method::type_annotations(oop method) {
2425 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2426 assert(has_type_annotations_field(), "type_annotations field must be present");
2427 return method->obj_field(type_annotations_offset);
2428 }
2429
2430 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2431 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2432 assert(has_type_annotations_field(), "type_annotations field must be present");
2433 method->obj_field_put(type_annotations_offset, value);
2434 }
2435
2436 void java_lang_reflect_Constructor::compute_offsets() {
2437 Klass* k = SystemDictionary::reflect_Constructor_klass();
2438 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2439 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2440 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2441 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2442 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2443 // The generic signature and annotations fields are only present in 1.5
2444 signature_offset = -1;
2445 annotations_offset = -1;
2446 parameter_annotations_offset = -1;
2447 type_annotations_offset = -1;
2448 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2449 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2450 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2451 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2452 }
2453
2454 Handle java_lang_reflect_Constructor::create(TRAPS) {
2455 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2456 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2457 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2458 instanceKlassHandle klass (THREAD, k);
2459 // Ensure it is initialized
2460 klass->initialize(CHECK_NH);
2461 return klass->allocate_instance_handle(THREAD);
2462 }
2463
2464 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2465 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2466 return reflect->obj_field(clazz_offset);
2467 }
2468
2469 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2470 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2471 reflect->obj_field_put(clazz_offset, value);
2472 }
2473
2474 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2475 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2476 return constructor->obj_field(parameterTypes_offset);
2477 }
2478
2479 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2480 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2481 constructor->obj_field_put(parameterTypes_offset, value);
2482 }
2483
2484 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2485 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2486 return constructor->obj_field(exceptionTypes_offset);
2487 }
2488
2489 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2490 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2491 constructor->obj_field_put(exceptionTypes_offset, value);
2492 }
2493
2494 int java_lang_reflect_Constructor::slot(oop reflect) {
2495 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2496 return reflect->int_field(slot_offset);
2497 }
2498
2499 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2500 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2501 reflect->int_field_put(slot_offset, value);
2502 }
2503
2504 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2505 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2506 return constructor->int_field(modifiers_offset);
2507 }
2508
2509 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2510 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2511 constructor->int_field_put(modifiers_offset, value);
2512 }
2513
2514 bool java_lang_reflect_Constructor::has_signature_field() {
2515 return (signature_offset >= 0);
2516 }
2517
2518 oop java_lang_reflect_Constructor::signature(oop constructor) {
2519 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2520 assert(has_signature_field(), "signature field must be present");
2521 return constructor->obj_field(signature_offset);
2522 }
2523
2524 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2525 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2526 assert(has_signature_field(), "signature field must be present");
2527 constructor->obj_field_put(signature_offset, value);
2528 }
2529
2530 bool java_lang_reflect_Constructor::has_annotations_field() {
2531 return (annotations_offset >= 0);
2532 }
2533
2534 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2535 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2536 assert(has_annotations_field(), "annotations field must be present");
2537 return constructor->obj_field(annotations_offset);
2538 }
2539
2540 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2541 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2542 assert(has_annotations_field(), "annotations field must be present");
2543 constructor->obj_field_put(annotations_offset, value);
2544 }
2545
2546 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2547 return (parameter_annotations_offset >= 0);
2548 }
2549
2550 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2551 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2552 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2553 return method->obj_field(parameter_annotations_offset);
2554 }
2555
2556 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2557 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2558 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2559 method->obj_field_put(parameter_annotations_offset, value);
2560 }
2561
2562 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2563 return (type_annotations_offset >= 0);
2564 }
2565
2566 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2567 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2568 assert(has_type_annotations_field(), "type_annotations field must be present");
2569 return constructor->obj_field(type_annotations_offset);
2570 }
2571
2572 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2573 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2574 assert(has_type_annotations_field(), "type_annotations field must be present");
2575 constructor->obj_field_put(type_annotations_offset, value);
2576 }
2577
2578 void java_lang_reflect_Field::compute_offsets() {
2579 Klass* k = SystemDictionary::reflect_Field_klass();
2580 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2581 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2582 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2583 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2584 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2585 // The generic signature and annotations fields are only present in 1.5
2586 signature_offset = -1;
2587 annotations_offset = -1;
2588 type_annotations_offset = -1;
2589 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2590 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2591 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2592 }
2593
2594 Handle java_lang_reflect_Field::create(TRAPS) {
2595 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2596 Symbol* name = vmSymbols::java_lang_reflect_Field();
2597 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2598 instanceKlassHandle klass (THREAD, k);
2599 // Ensure it is initialized
2600 klass->initialize(CHECK_NH);
2601 return klass->allocate_instance_handle(THREAD);
2602 }
2603
2604 oop java_lang_reflect_Field::clazz(oop reflect) {
2605 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2606 return reflect->obj_field(clazz_offset);
2607 }
2608
2609 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2610 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2611 reflect->obj_field_put(clazz_offset, value);
2612 }
2613
2614 oop java_lang_reflect_Field::name(oop field) {
2615 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2616 return field->obj_field(name_offset);
2617 }
2618
2619 void java_lang_reflect_Field::set_name(oop field, oop value) {
2620 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2621 field->obj_field_put(name_offset, value);
2622 }
2623
2624 oop java_lang_reflect_Field::type(oop field) {
2625 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2626 return field->obj_field(type_offset);
2627 }
2628
2629 void java_lang_reflect_Field::set_type(oop field, oop value) {
2630 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2631 field->obj_field_put(type_offset, value);
2632 }
2633
2634 int java_lang_reflect_Field::slot(oop reflect) {
2635 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2636 return reflect->int_field(slot_offset);
2637 }
2638
2639 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2640 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2641 reflect->int_field_put(slot_offset, value);
2642 }
2643
2644 int java_lang_reflect_Field::modifiers(oop field) {
2645 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2646 return field->int_field(modifiers_offset);
2647 }
2648
2649 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2650 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2651 field->int_field_put(modifiers_offset, value);
2652 }
2653
2654 bool java_lang_reflect_Field::has_signature_field() {
2655 return (signature_offset >= 0);
2656 }
2657
2658 oop java_lang_reflect_Field::signature(oop field) {
2659 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2660 assert(has_signature_field(), "signature field must be present");
2661 return field->obj_field(signature_offset);
2662 }
2663
2664 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2665 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2666 assert(has_signature_field(), "signature field must be present");
2667 field->obj_field_put(signature_offset, value);
2668 }
2669
2670 bool java_lang_reflect_Field::has_annotations_field() {
2671 return (annotations_offset >= 0);
2672 }
2673
2674 oop java_lang_reflect_Field::annotations(oop field) {
2675 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2676 assert(has_annotations_field(), "annotations field must be present");
2677 return field->obj_field(annotations_offset);
2678 }
2679
2680 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2681 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2682 assert(has_annotations_field(), "annotations field must be present");
2683 field->obj_field_put(annotations_offset, value);
2684 }
2685
2686 bool java_lang_reflect_Field::has_type_annotations_field() {
2687 return (type_annotations_offset >= 0);
2688 }
2689
2690 oop java_lang_reflect_Field::type_annotations(oop field) {
2691 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2692 assert(has_type_annotations_field(), "type_annotations field must be present");
2693 return field->obj_field(type_annotations_offset);
2694 }
2695
2696 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2697 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2698 assert(has_type_annotations_field(), "type_annotations field must be present");
2699 field->obj_field_put(type_annotations_offset, value);
2700 }
2701
2702 void sun_reflect_ConstantPool::compute_offsets() {
2703 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2704 // This null test can be removed post beta
2705 if (k != NULL) {
2706 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2707 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2708 }
2709 }
2710
2711 void java_lang_reflect_Parameter::compute_offsets() {
2712 Klass* k = SystemDictionary::reflect_Parameter_klass();
2713 if(NULL != k) {
2714 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2715 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2716 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2717 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2718 }
2719 }
2720
2721 Handle java_lang_reflect_Parameter::create(TRAPS) {
2722 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2723 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2724 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2725 instanceKlassHandle klass (THREAD, k);
2726 // Ensure it is initialized
2727 klass->initialize(CHECK_NH);
2728 return klass->allocate_instance_handle(THREAD);
2729 }
2730
2731 oop java_lang_reflect_Parameter::name(oop param) {
2732 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2733 return param->obj_field(name_offset);
2734 }
2735
2736 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2737 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2738 param->obj_field_put(name_offset, value);
2739 }
2740
2741 int java_lang_reflect_Parameter::modifiers(oop param) {
2742 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2743 return param->int_field(modifiers_offset);
2744 }
2745
2746 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2747 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2748 param->int_field_put(modifiers_offset, value);
2749 }
2750
2751 int java_lang_reflect_Parameter::index(oop param) {
2752 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2753 return param->int_field(index_offset);
2754 }
2755
2756 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2757 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2758 param->int_field_put(index_offset, value);
2759 }
2760
2761 oop java_lang_reflect_Parameter::executable(oop param) {
2762 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2763 return param->obj_field(executable_offset);
2764 }
2765
2766 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2767 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2768 param->obj_field_put(executable_offset, value);
2769 }
2770
2771
2772 Handle sun_reflect_ConstantPool::create(TRAPS) {
2773 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2774 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2775 instanceKlassHandle klass (THREAD, k);
2776 // Ensure it is initialized
2777 klass->initialize(CHECK_NH);
2778 return klass->allocate_instance_handle(THREAD);
2779 }
2780
2781
2782 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2783 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2784 oop mirror = value->pool_holder()->java_mirror();
2785 // Save the mirror to get back the constant pool.
2786 reflect->obj_field_put(_oop_offset, mirror);
2787 }
2788
2789 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2790 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2791
2792 oop mirror = reflect->obj_field(_oop_offset);
2793 Klass* k = java_lang_Class::as_Klass(mirror);
2794 assert(k->is_instance_klass(), "Must be");
2795
2796 // Get the constant pool back from the klass. Since class redefinition
2797 // merges the new constant pool into the old, this is essentially the
2798 // same constant pool as the original. If constant pool merging is
2799 // no longer done in the future, this will have to change to save
2800 // the original.
2801 return InstanceKlass::cast(k)->constants();
2802 }
2803
2804 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2805 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2806 // This null test can be removed post beta
2807 if (k != NULL) {
2808 compute_offset(_base_offset, k,
2809 vmSymbols::base_name(), vmSymbols::object_signature());
2810 }
2811 }
2812
2813 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2814 Klass* k = SystemDictionary::box_klass(type);
2815 if (k == NULL) return NULL;
2816 instanceKlassHandle h (THREAD, k);
2817 if (!h->is_initialized()) h->initialize(CHECK_0);
2818 return h->allocate_instance(THREAD);
2819 }
2820
2821
2822 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2823 oop box = initialize_and_allocate(type, CHECK_0);
2824 if (box == NULL) return NULL;
2825 switch (type) {
2826 case T_BOOLEAN:
2827 box->bool_field_put(value_offset, value->z);
2828 break;
2829 case T_CHAR:
2830 box->char_field_put(value_offset, value->c);
2831 break;
2832 case T_FLOAT:
2833 box->float_field_put(value_offset, value->f);
2834 break;
2835 case T_DOUBLE:
2836 box->double_field_put(long_value_offset, value->d);
2837 break;
2838 case T_BYTE:
2839 box->byte_field_put(value_offset, value->b);
2840 break;
2841 case T_SHORT:
2842 box->short_field_put(value_offset, value->s);
2843 break;
2844 case T_INT:
2845 box->int_field_put(value_offset, value->i);
2846 break;
2847 case T_LONG:
2848 box->long_field_put(long_value_offset, value->j);
2849 break;
2850 default:
2851 return NULL;
2852 }
2853 return box;
2854 }
2855
2856
2857 BasicType java_lang_boxing_object::basic_type(oop box) {
2858 if (box == NULL) return T_ILLEGAL;
2859 BasicType type = SystemDictionary::box_klass_type(box->klass());
2860 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2861 return T_ILLEGAL;
2862 return type;
2863 }
2864
2865
2866 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2867 BasicType type = SystemDictionary::box_klass_type(box->klass());
2868 switch (type) {
2869 case T_BOOLEAN:
2870 value->z = box->bool_field(value_offset);
2871 break;
2872 case T_CHAR:
2873 value->c = box->char_field(value_offset);
2874 break;
2875 case T_FLOAT:
2876 value->f = box->float_field(value_offset);
2877 break;
2878 case T_DOUBLE:
2879 value->d = box->double_field(long_value_offset);
2880 break;
2881 case T_BYTE:
2882 value->b = box->byte_field(value_offset);
2883 break;
2884 case T_SHORT:
2885 value->s = box->short_field(value_offset);
2886 break;
2887 case T_INT:
2888 value->i = box->int_field(value_offset);
2889 break;
2890 case T_LONG:
2891 value->j = box->long_field(long_value_offset);
2892 break;
2893 default:
2894 return T_ILLEGAL;
2895 } // end switch
2896 return type;
2897 }
2898
2899
2900 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2901 BasicType type = SystemDictionary::box_klass_type(box->klass());
2902 switch (type) {
2903 case T_BOOLEAN:
2904 box->bool_field_put(value_offset, value->z);
2905 break;
2906 case T_CHAR:
2907 box->char_field_put(value_offset, value->c);
2908 break;
2909 case T_FLOAT:
2910 box->float_field_put(value_offset, value->f);
2911 break;
2912 case T_DOUBLE:
2913 box->double_field_put(long_value_offset, value->d);
2914 break;
2915 case T_BYTE:
2916 box->byte_field_put(value_offset, value->b);
2917 break;
2918 case T_SHORT:
2919 box->short_field_put(value_offset, value->s);
2920 break;
2921 case T_INT:
2922 box->int_field_put(value_offset, value->i);
2923 break;
2924 case T_LONG:
2925 box->long_field_put(long_value_offset, value->j);
2926 break;
2927 default:
2928 return T_ILLEGAL;
2929 } // end switch
2930 return type;
2931 }
2932
2933
2934 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2935 switch (type) {
2936 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2937 case T_CHAR: st->print("%d", value->c); break;
2938 case T_BYTE: st->print("%d", value->b); break;
2939 case T_SHORT: st->print("%d", value->s); break;
2940 case T_INT: st->print("%d", value->i); break;
2941 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2942 case T_FLOAT: st->print("%f", value->f); break;
2943 case T_DOUBLE: st->print("%lf", value->d); break;
2944 default: st->print("type %d?", type); break;
2945 }
2946 }
2947
2948 // Support for java_lang_ref_SoftReference
2949
2950 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2951 return ref->long_field(timestamp_offset);
2952 }
2953
2954 jlong java_lang_ref_SoftReference::clock() {
2955 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
2956 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2957 return *offset;
2958 }
2959
2960 void java_lang_ref_SoftReference::set_clock(jlong value) {
2961 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
2962 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2963 *offset = value;
2964 }
2965
2966 // Support for java_lang_invoke_DirectMethodHandle
2967
2968 int java_lang_invoke_DirectMethodHandle::_member_offset;
2969
2970 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
2971 oop member_name = NULL;
2972 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
2973 assert(is_dmh, "a DirectMethodHandle oop is expected");
2974 if (is_dmh) {
2975 member_name = dmh->obj_field(member_offset_in_bytes());
2976 }
2977 return member_name;
2978 }
2979
2980 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2981 Klass* klass_oop = SystemDictionary::DirectMethodHandle_klass();
2982 if (klass_oop != NULL) {
2983 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2984 }
2985 }
2986
2987 // Support for java_lang_invoke_MethodHandle
2988
2989 int java_lang_invoke_MethodHandle::_type_offset;
2990 int java_lang_invoke_MethodHandle::_form_offset;
2991
2992 int java_lang_invoke_MemberName::_clazz_offset;
2993 int java_lang_invoke_MemberName::_name_offset;
2994 int java_lang_invoke_MemberName::_type_offset;
2995 int java_lang_invoke_MemberName::_flags_offset;
2996 int java_lang_invoke_MemberName::_vmtarget_offset;
2997 int java_lang_invoke_MemberName::_vmloader_offset;
2998 int java_lang_invoke_MemberName::_vmindex_offset;
2999
3000 int java_lang_invoke_LambdaForm::_vmentry_offset;
3001
3002 void java_lang_invoke_MethodHandle::compute_offsets() {
3003 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
3004 if (klass_oop != NULL) {
3005 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
3006 compute_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
3007 }
3008 }
3009
3010 void java_lang_invoke_MemberName::compute_offsets() {
3011 Klass* klass_oop = SystemDictionary::MemberName_klass();
3012 if (klass_oop != NULL) {
3013 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
3014 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
3015 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
3016 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
3017 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3018 }
3019 }
3020
3021 void java_lang_invoke_LambdaForm::compute_offsets() {
3022 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
3023 if (klass_oop != NULL) {
3024 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
3025 }
3026 }
3027
3028 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3029 return obj != NULL && is_subclass(obj->klass());
3030 }
3031
3032
3033 oop java_lang_invoke_MethodHandle::type(oop mh) {
3034 return mh->obj_field(_type_offset);
3035 }
3036
3037 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3038 mh->obj_field_put(_type_offset, mtype);
3039 }
3040
3041 oop java_lang_invoke_MethodHandle::form(oop mh) {
3042 assert(_form_offset != 0, "");
3043 return mh->obj_field(_form_offset);
3044 }
3045
3046 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3047 assert(_form_offset != 0, "");
3048 mh->obj_field_put(_form_offset, lform);
3049 }
3050
3051 /// MemberName accessors
3052
3053 oop java_lang_invoke_MemberName::clazz(oop mname) {
3054 assert(is_instance(mname), "wrong type");
3055 return mname->obj_field(_clazz_offset);
3056 }
3057
3058 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3059 assert(is_instance(mname), "wrong type");
3060 mname->obj_field_put(_clazz_offset, clazz);
3061 }
3062
3063 oop java_lang_invoke_MemberName::name(oop mname) {
3064 assert(is_instance(mname), "wrong type");
3065 return mname->obj_field(_name_offset);
3066 }
3067
3068 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3069 assert(is_instance(mname), "wrong type");
3070 mname->obj_field_put(_name_offset, name);
3071 }
3072
3073 oop java_lang_invoke_MemberName::type(oop mname) {
3074 assert(is_instance(mname), "wrong type");
3075 return mname->obj_field(_type_offset);
3076 }
3077
3078 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3079 assert(is_instance(mname), "wrong type");
3080 mname->obj_field_put(_type_offset, type);
3081 }
3082
3083 int java_lang_invoke_MemberName::flags(oop mname) {
3084 assert(is_instance(mname), "wrong type");
3085 return mname->int_field(_flags_offset);
3086 }
3087
3088 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3089 assert(is_instance(mname), "wrong type");
3090 mname->int_field_put(_flags_offset, flags);
3091 }
3092
3093 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
3094 assert(is_instance(mname), "wrong type");
3095 return (Metadata*)mname->address_field(_vmtarget_offset);
3096 }
3097
3098 bool java_lang_invoke_MemberName::is_method(oop mname) {
3099 assert(is_instance(mname), "must be MemberName");
3100 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3101 }
3102
3103 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
3104 assert(is_instance(mname), "wrong type");
3105 // check the type of the vmtarget
3106 oop dependency = NULL;
3107 if (ref != NULL) {
3108 switch (flags(mname) & (MN_IS_METHOD |
3109 MN_IS_CONSTRUCTOR |
3110 MN_IS_FIELD)) {
3111 case MN_IS_METHOD:
3112 case MN_IS_CONSTRUCTOR:
3113 assert(ref->is_method(), "should be a method");
3114 dependency = ((Method*)ref)->method_holder()->java_mirror();
3115 break;
3116 case MN_IS_FIELD:
3117 assert(ref->is_klass(), "should be a class");
3118 dependency = ((Klass*)ref)->java_mirror();
3119 break;
3120 default:
3121 ShouldNotReachHere();
3122 }
3123 }
3124 mname->address_field_put(_vmtarget_offset, (address)ref);
3125 // Add a reference to the loader (actually mirror because anonymous classes will not have
3126 // distinct loaders) to ensure the metadata is kept alive
3127 // This mirror may be different than the one in clazz field.
3128 mname->obj_field_put(_vmloader_offset, dependency);
3129 }
3130
3131 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3132 assert(is_instance(mname), "wrong type");
3133 return (intptr_t) mname->address_field(_vmindex_offset);
3134 }
3135
3136 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3137 assert(is_instance(mname), "wrong type");
3138 mname->address_field_put(_vmindex_offset, (address) index);
3139 }
3140
3141 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3142 assert(is_instance(lform), "wrong type");
3143 return lform->obj_field(_vmentry_offset);
3144 }
3145
3146
3147 // Support for java_lang_invoke_MethodType
3148
3149 int java_lang_invoke_MethodType::_rtype_offset;
3150 int java_lang_invoke_MethodType::_ptypes_offset;
3151
3152 void java_lang_invoke_MethodType::compute_offsets() {
3153 Klass* k = SystemDictionary::MethodType_klass();
3154 if (k != NULL) {
3155 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
3156 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
3157 }
3158 }
3159
3160 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3161 st->print("(");
3162 objArrayOop pts = ptypes(mt);
3163 for (int i = 0, limit = pts->length(); i < limit; i++) {
3164 java_lang_Class::print_signature(pts->obj_at(i), st);
3165 }
3166 st->print(")");
3167 java_lang_Class::print_signature(rtype(mt), st);
3168 }
3169
3170 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3171 ResourceMark rm;
3172 stringStream buffer(128);
3173 print_signature(mt, &buffer);
3174 const char* sigstr = buffer.base();
3175 int siglen = (int) buffer.size();
3176 Symbol *name;
3177 if (!intern_if_not_found) {
3178 name = SymbolTable::probe(sigstr, siglen);
3179 } else {
3180 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3181 }
3182 return name;
3183 }
3184
3185 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3186 if (mt1 == mt2)
3187 return true;
3188 if (rtype(mt1) != rtype(mt2))
3189 return false;
3190 if (ptype_count(mt1) != ptype_count(mt2))
3191 return false;
3192 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3193 if (ptype(mt1, i) != ptype(mt2, i))
3194 return false;
3195 }
3196 return true;
3197 }
3198
3199 oop java_lang_invoke_MethodType::rtype(oop mt) {
3200 assert(is_instance(mt), "must be a MethodType");
3201 return mt->obj_field(_rtype_offset);
3202 }
3203
3204 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3205 assert(is_instance(mt), "must be a MethodType");
3206 return (objArrayOop) mt->obj_field(_ptypes_offset);
3207 }
3208
3209 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3210 return ptypes(mt)->obj_at(idx);
3211 }
3212
3213 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3214 return ptypes(mt)->length();
3215 }
3216
3217 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3218 objArrayOop pts = ptypes(mt);
3219 int count = pts->length();
3220 int slots = 0;
3221 for (int i = 0; i < count; i++) {
3222 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3223 slots += type2size[bt];
3224 }
3225 return slots;
3226 }
3227
3228 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3229 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3230 return type2size[bt];
3231 }
3232
3233
3234 // Support for java_lang_invoke_CallSite
3235
3236 int java_lang_invoke_CallSite::_target_offset;
3237 int java_lang_invoke_CallSite::_context_offset;
3238
3239 void java_lang_invoke_CallSite::compute_offsets() {
3240 Klass* k = SystemDictionary::CallSite_klass();
3241 if (k != NULL) {
3242 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
3243 compute_offset(_context_offset, k, vmSymbols::context_name(),
3244 vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
3245 }
3246 }
3247
3248 oop java_lang_invoke_CallSite::context(oop call_site) {
3249 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3250
3251 oop dep_oop = call_site->obj_field(_context_offset);
3252 return dep_oop;
3253 }
3254
3255 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3256
3257 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3258
3259 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3260 Klass* k = SystemDictionary::Context_klass();
3261 if (k != NULL) {
3262 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3263 }
3264 }
3265
3266 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3267 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3268 intptr_t* vmdeps_addr = (intptr_t*)call_site->address_field_addr(_vmdependencies_offset);
3269 DependencyContext dep_ctx(vmdeps_addr);
3270 return dep_ctx;
3271 }
3272
3273 // Support for java_security_AccessControlContext
3274
3275 int java_security_AccessControlContext::_context_offset = 0;
3276 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3277 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3278 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3279
3280 void java_security_AccessControlContext::compute_offsets() {
3281 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3282 fieldDescriptor fd;
3283 InstanceKlass* ik = SystemDictionary::AccessControlContext_klass();
3284
3285 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
3286 fatal("Invalid layout of java.security.AccessControlContext");
3287 }
3288 _context_offset = fd.offset();
3289
3290 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
3291 fatal("Invalid layout of java.security.AccessControlContext");
3292 }
3293 _privilegedContext_offset = fd.offset();
3294
3295 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
3296 fatal("Invalid layout of java.security.AccessControlContext");
3297 }
3298 _isPrivileged_offset = fd.offset();
3299
3300 // The offset may not be present for bootstrapping with older JDK.
3301 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
3302 _isAuthorized_offset = fd.offset();
3303 }
3304 }
3305
3306
3307 bool java_security_AccessControlContext::is_authorized(Handle context) {
3308 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3309 assert(_isAuthorized_offset != -1, "should be set");
3310 return context->bool_field(_isAuthorized_offset) != 0;
3311 }
3312
3313 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3314 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3315 // Ensure klass is initialized
3316 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3317 // Allocate result
3318 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3319 // Fill in values
3320 result->obj_field_put(_context_offset, context());
3321 result->obj_field_put(_privilegedContext_offset, privileged_context());
3322 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3323 // whitelist AccessControlContexts created by the JVM if present
3324 if (_isAuthorized_offset != -1) {
3325 result->bool_field_put(_isAuthorized_offset, true);
3326 }
3327 return result;
3328 }
3329
3330
3331 // Support for java_lang_ClassLoader
3332
3333 bool java_lang_ClassLoader::offsets_computed = false;
3334 int java_lang_ClassLoader::_loader_data_offset = -1;
3335 int java_lang_ClassLoader::parallelCapable_offset = -1;
3336
3337 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
3338 assert(loader != NULL && loader->is_oop(), "loader must be oop");
3339 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
3340 }
3341
3342 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3343 return *java_lang_ClassLoader::loader_data_addr(loader);
3344 }
3345
3346 void java_lang_ClassLoader::compute_offsets() {
3347 assert(!offsets_computed, "offsets should be initialized only once");
3348 offsets_computed = true;
3349
3350 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
3351 Klass* k1 = SystemDictionary::ClassLoader_klass();
3352 compute_optional_offset(parallelCapable_offset,
3353 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
3354
3355 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3356 }
3357
3358 oop java_lang_ClassLoader::parent(oop loader) {
3359 assert(is_instance(loader), "loader must be oop");
3360 return loader->obj_field(parent_offset);
3361 }
3362
3363 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
3364 assert(is_instance(loader), "loader must be oop");
3365 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
3366 oop acl = loader;
3367 debug_only(jint loop_count = 0);
3368 // This loop taken verbatim from ClassLoader.java:
3369 do {
3370 acl = parent(acl);
3371 if (cl == acl) {
3372 return true;
3373 }
3374 assert(++loop_count > 0, "loop_count overflow");
3375 } while (acl != NULL);
3376 return false;
3377 }
3378
3379 bool java_lang_ClassLoader::is_instance(oop obj) {
3380 return obj != NULL && is_subclass(obj->klass());
3381 }
3382
3383
3384 // For class loader classes, parallelCapable defined
3385 // based on non-null field
3386 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
3387 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
3388 if (parallelCapable_offset == -1) {
3389 // Default for backward compatibility is false
3390 return false;
3391 }
3392 return (class_loader->obj_field(parallelCapable_offset) != NULL);
3393 }
3394
3395 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
3396 // Fix for 4474172; see evaluation for more details
3397 loader = non_reflection_class_loader(loader);
3398
3399 oop cl = SystemDictionary::java_system_loader();
3400 while(cl != NULL) {
3401 if (cl == loader) return true;
3402 cl = parent(cl);
3403 }
3404 return false;
3405 }
3406
3407 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
3408 if (loader != NULL) {
3409 // See whether this is one of the class loaders associated with
3410 // the generated bytecodes for reflection, and if so, "magically"
3411 // delegate to its parent to prevent class loading from occurring
3412 // in places where applications using reflection didn't expect it.
3413 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
3414 // This might be null in non-1.4 JDKs
3415 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
3416 return parent(loader);
3417 }
3418 }
3419 return loader;
3420 }
3421
3422
3423 // Support for java_lang_System
3424 int java_lang_System::in_offset_in_bytes() {
3425 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
3426 }
3427
3428
3429 int java_lang_System::out_offset_in_bytes() {
3430 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
3431 }
3432
3433
3434 int java_lang_System::err_offset_in_bytes() {
3435 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
3436 }
3437
3438
3439 bool java_lang_System::has_security_manager() {
3440 InstanceKlass* ik = SystemDictionary::System_klass();
3441 address addr = ik->static_field_addr(static_security_offset);
3442 if (UseCompressedOops) {
3443 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
3444 } else {
3445 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
3446 }
3447 }
3448
3449 int java_lang_Class::_klass_offset;
3450 int java_lang_Class::_array_klass_offset;
3451 int java_lang_Class::_oop_size_offset;
3452 int java_lang_Class::_static_oop_field_count_offset;
3453 int java_lang_Class::_class_loader_offset;
3454 int java_lang_Class::_protection_domain_offset;
3455 int java_lang_Class::_component_mirror_offset;
3456 int java_lang_Class::_init_lock_offset;
3457 int java_lang_Class::_signers_offset;
3458 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
3459 int java_lang_Throwable::backtrace_offset;
3460 int java_lang_Throwable::detailMessage_offset;
3461 int java_lang_Throwable::stackTrace_offset;
3462 int java_lang_Throwable::depth_offset;
3463 int java_lang_Throwable::static_unassigned_stacktrace_offset;
3464 int java_lang_reflect_AccessibleObject::override_offset;
3465 int java_lang_reflect_Method::clazz_offset;
3466 int java_lang_reflect_Method::name_offset;
3467 int java_lang_reflect_Method::returnType_offset;
3468 int java_lang_reflect_Method::parameterTypes_offset;
3469 int java_lang_reflect_Method::exceptionTypes_offset;
3470 int java_lang_reflect_Method::slot_offset;
3471 int java_lang_reflect_Method::modifiers_offset;
3472 int java_lang_reflect_Method::signature_offset;
3473 int java_lang_reflect_Method::annotations_offset;
3474 int java_lang_reflect_Method::parameter_annotations_offset;
3475 int java_lang_reflect_Method::annotation_default_offset;
3476 int java_lang_reflect_Method::type_annotations_offset;
3477 int java_lang_reflect_Constructor::clazz_offset;
3478 int java_lang_reflect_Constructor::parameterTypes_offset;
3479 int java_lang_reflect_Constructor::exceptionTypes_offset;
3480 int java_lang_reflect_Constructor::slot_offset;
3481 int java_lang_reflect_Constructor::modifiers_offset;
3482 int java_lang_reflect_Constructor::signature_offset;
3483 int java_lang_reflect_Constructor::annotations_offset;
3484 int java_lang_reflect_Constructor::parameter_annotations_offset;
3485 int java_lang_reflect_Constructor::type_annotations_offset;
3486 int java_lang_reflect_Field::clazz_offset;
3487 int java_lang_reflect_Field::name_offset;
3488 int java_lang_reflect_Field::type_offset;
3489 int java_lang_reflect_Field::slot_offset;
3490 int java_lang_reflect_Field::modifiers_offset;
3491 int java_lang_reflect_Field::signature_offset;
3492 int java_lang_reflect_Field::annotations_offset;
3493 int java_lang_reflect_Field::type_annotations_offset;
3494 int java_lang_reflect_Parameter::name_offset;
3495 int java_lang_reflect_Parameter::modifiers_offset;
3496 int java_lang_reflect_Parameter::index_offset;
3497 int java_lang_reflect_Parameter::executable_offset;
3498 int java_lang_boxing_object::value_offset;
3499 int java_lang_boxing_object::long_value_offset;
3500 int java_lang_ref_Reference::referent_offset;
3501 int java_lang_ref_Reference::queue_offset;
3502 int java_lang_ref_Reference::next_offset;
3503 int java_lang_ref_Reference::discovered_offset;
3504 int java_lang_ref_Reference::number_of_fake_oop_fields;
3505 int java_lang_ref_SoftReference::timestamp_offset;
3506 int java_lang_ref_SoftReference::static_clock_offset;
3507 int java_lang_ClassLoader::parent_offset;
3508 int java_lang_System::static_in_offset;
3509 int java_lang_System::static_out_offset;
3510 int java_lang_System::static_err_offset;
3511 int java_lang_System::static_security_offset;
3512 int java_lang_StackTraceElement::declaringClass_offset;
3513 int java_lang_StackTraceElement::methodName_offset;
3514 int java_lang_StackTraceElement::fileName_offset;
3515 int java_lang_StackTraceElement::lineNumber_offset;
3516 int java_lang_StackFrameInfo::_declaringClass_offset;
3517 int java_lang_StackFrameInfo::_memberName_offset;
3518 int java_lang_StackFrameInfo::_bci_offset;
3519 int java_lang_StackFrameInfo::_methodName_offset;
3520 int java_lang_StackFrameInfo::_fileName_offset;
3521 int java_lang_StackFrameInfo::_lineNumber_offset;
3522 int java_lang_StackFrameInfo::_mid_offset;
3523 int java_lang_StackFrameInfo::_version_offset;
3524 int java_lang_StackFrameInfo::_cpref_offset;
3525 int java_lang_LiveStackFrameInfo::_monitors_offset;
3526 int java_lang_LiveStackFrameInfo::_locals_offset;
3527 int java_lang_LiveStackFrameInfo::_operands_offset;
3528 int java_lang_AssertionStatusDirectives::classes_offset;
3529 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3530 int java_lang_AssertionStatusDirectives::packages_offset;
3531 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3532 int java_lang_AssertionStatusDirectives::deflt_offset;
3533 int java_nio_Buffer::_limit_offset;
3534 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3535 int sun_reflect_ConstantPool::_oop_offset;
3536 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3537
3538
3539 // Support for java_lang_StackTraceElement
3540
3541 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3542 element->obj_field_put(fileName_offset, value);
3543 }
3544
3545 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3546 element->obj_field_put(declaringClass_offset, value);
3547 }
3548
3549 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3550 element->obj_field_put(methodName_offset, value);
3551 }
3552
3553 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3554 element->int_field_put(lineNumber_offset, value);
3555 }
3556
3557 // Support for java_lang_StackFrameInfo
3558 void java_lang_StackFrameInfo::set_declaringClass(oop element, oop value) {
3559 element->obj_field_put(_declaringClass_offset, value);
3560 }
3561
3562 void java_lang_StackFrameInfo::set_mid(oop element, short value) {
3563 element->short_field_put(_mid_offset, value);
3564 }
3565
3566 void java_lang_StackFrameInfo::set_version(oop element, short value) {
3567 element->short_field_put(_version_offset, value);
3568 }
3569
3570 void java_lang_StackFrameInfo::set_cpref(oop element, short value) {
3571 element->short_field_put(_cpref_offset, value);
3572 }
3573
3574 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
3575 element->int_field_put(_bci_offset, value);
3576 }
3577
3578 void java_lang_StackFrameInfo::set_fileName(oop element, oop value) {
3579 element->obj_field_put(_fileName_offset, value);
3580 }
3581
3582 void java_lang_StackFrameInfo::set_methodName(oop element, oop value) {
3583 element->obj_field_put(_methodName_offset, value);
3584 }
3585
3586 void java_lang_StackFrameInfo::set_lineNumber(oop element, int value) {
3587 element->int_field_put(_lineNumber_offset, value);
3588 }
3589
3590 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
3591 element->obj_field_put(_monitors_offset, value);
3592 }
3593
3594 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
3595 element->obj_field_put(_locals_offset, value);
3596 }
3597
3598 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
3599 element->obj_field_put(_operands_offset, value);
3600 }
3601
3602 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3603
3604 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3605 o->obj_field_put(classes_offset, val);
3606 }
3607
3608 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3609 o->obj_field_put(classEnabled_offset, val);
3610 }
3611
3612 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3613 o->obj_field_put(packages_offset, val);
3614 }
3615
3616 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3617 o->obj_field_put(packageEnabled_offset, val);
3618 }
3619
3620 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3621 o->bool_field_put(deflt_offset, val);
3622 }
3623
3624
3625 // Support for intrinsification of java.nio.Buffer.checkIndex
3626 int java_nio_Buffer::limit_offset() {
3627 return _limit_offset;
3628 }
3629
3630
3631 void java_nio_Buffer::compute_offsets() {
3632 Klass* k = SystemDictionary::nio_Buffer_klass();
3633 assert(k != NULL, "must be loaded in 1.4+");
3634 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3635 }
3636
3637 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3638 if (_owner_offset != 0) return;
3639
3640 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3641 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3642 compute_offset(_owner_offset, k,
3643 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3644 }
3645
3646 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3647 assert(_owner_offset != 0, "Must be initialized");
3648 return obj->obj_field(_owner_offset);
3649 }
3650
3651 // Compute hard-coded offsets
3652 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3653 // are not available to determine the offset_of_static_fields.
3654 void JavaClasses::compute_hard_coded_offsets() {
3655 const int x = heapOopSize;
3656 const int header = instanceOopDesc::base_offset_in_bytes();
3657
3658 // Throwable Class
3659 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3660 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3661 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3662 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3663
3664 // java_lang_boxing_object
3665 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3666 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3667
3668 // java_lang_ref_Reference:
3669 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3670 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3671 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3672 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3673 // Artificial fields for java_lang_ref_Reference
3674 // The first field is for the discovered field added in 1.4
3675 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3676
3677 // java_lang_ref_SoftReference Class
3678 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3679 // Don't multiply static fields because they are always in wordSize units
3680 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3681
3682 // java_lang_ClassLoader
3683 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3684
3685 // java_lang_System
3686 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3687 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3688 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3689 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3690
3691 // java_lang_StackTraceElement
3692 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3693 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3694 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3695 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3696 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3697 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3698 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3699 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3700 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3701
3702 }
3703
3704
3705 // Compute non-hard-coded field offsets of all the classes in this file
3706 void JavaClasses::compute_offsets() {
3707 // java_lang_Class::compute_offsets was called earlier in bootstrap
3708 java_lang_ClassLoader::compute_offsets();
3709 java_lang_Throwable::compute_offsets();
3710 java_lang_Thread::compute_offsets();
3711 java_lang_ThreadGroup::compute_offsets();
3712 java_lang_invoke_MethodHandle::compute_offsets();
3713 java_lang_invoke_DirectMethodHandle::compute_offsets();
3714 java_lang_invoke_MemberName::compute_offsets();
3715 java_lang_invoke_LambdaForm::compute_offsets();
3716 java_lang_invoke_MethodType::compute_offsets();
3717 java_lang_invoke_CallSite::compute_offsets();
3718 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
3719 java_security_AccessControlContext::compute_offsets();
3720 // Initialize reflection classes. The layouts of these classes
3721 // changed with the new reflection implementation in JDK 1.4, and
3722 // since the Universe doesn't know what JDK version it is until this
3723 // point we defer computation of these offsets until now.
3724 java_lang_reflect_AccessibleObject::compute_offsets();
3725 java_lang_reflect_Method::compute_offsets();
3726 java_lang_reflect_Constructor::compute_offsets();
3727 java_lang_reflect_Field::compute_offsets();
3728 java_nio_Buffer::compute_offsets();
3729 sun_reflect_ConstantPool::compute_offsets();
3730 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3731 java_lang_reflect_Parameter::compute_offsets();
3732 java_lang_StackFrameInfo::compute_offsets();
3733 java_lang_LiveStackFrameInfo::compute_offsets();
3734
3735 // generated interpreter code wants to know about the offsets we just computed:
3736 AbstractAssembler::update_delayed_values();
3737 }
3738
3739 #ifndef PRODUCT
3740
3741 // These functions exist to assert the validity of hard-coded field offsets to guard
3742 // against changes in the class files
3743
3744 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3745 EXCEPTION_MARK;
3746 fieldDescriptor fd;
3747 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3748 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3749 instanceKlassHandle h_klass (THREAD, k);
3750 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3751 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3752 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3753 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3754 return false;
3755 }
3756 if (fd.is_static()) {
3757 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3758 return false;
3759 }
3760 if (fd.offset() == hardcoded_offset ) {
3761 return true;
3762 } else {
3763 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3764 klass_name, field_name, hardcoded_offset, fd.offset());
3765 return false;
3766 }
3767 }
3768
3769
3770 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3771 EXCEPTION_MARK;
3772 fieldDescriptor fd;
3773 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3774 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3775 instanceKlassHandle h_klass (THREAD, k);
3776 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3777 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3778 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3779 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3780 return false;
3781 }
3782 if (!fd.is_static()) {
3783 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3784 return false;
3785 }
3786 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3787 return true;
3788 } else {
3789 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());
3790 return false;
3791 }
3792 }
3793
3794
3795 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3796 EXCEPTION_MARK;
3797 fieldDescriptor fd;
3798 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3799 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3800 instanceKlassHandle h_klass (THREAD, k);
3801 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3802 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3803 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3804 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3805 return false;
3806 }
3807 if (!fd.is_static() || !fd.has_initial_value()) {
3808 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3809 return false;
3810 }
3811 if (!fd.initial_value_tag().is_int()) {
3812 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3813 return false;
3814 }
3815 jint field_value = fd.int_initial_value();
3816 if (field_value == hardcoded_constant) {
3817 return true;
3818 } else {
3819 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);
3820 return false;
3821 }
3822 }
3823
3824
3825 // Check the hard-coded field offsets of all the classes in this file
3826
3827 void JavaClasses::check_offsets() {
3828 bool valid = true;
3829 HandleMark hm;
3830
3831 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3832 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3833
3834 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3835 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3836
3837 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3838 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3839
3840 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3841 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3842
3843 // java.lang.String
3844
3845 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[B");
3846 if (java_lang_String::has_hash_field()) {
3847 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3848 }
3849 if (java_lang_String::has_coder_field()) {
3850 CHECK_OFFSET("java/lang/String", java_lang_String, coder, "B");
3851 }
3852
3853 // java.lang.Class
3854
3855 // Fake fields
3856 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3857 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3858
3859 // java.lang.Throwable
3860
3861 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3862 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3863 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3864 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, depth, "I");
3865
3866 // Boxed primitive objects (java_lang_boxing_object)
3867
3868 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3869 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3870 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3871 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3872 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3873 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3874 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3875 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3876
3877 // java.lang.ClassLoader
3878
3879 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3880
3881 // java.lang.System
3882
3883 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3884 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3885 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3886 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
3887
3888 // java.lang.StackTraceElement
3889
3890 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3891 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3892 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3893 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3894
3895 // java.lang.ref.Reference
3896
3897 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3898 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3899 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3900 // Fake field
3901 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3902
3903 // java.lang.ref.SoftReference
3904
3905 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3906 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3907
3908 // java.lang.AssertionStatusDirectives
3909 //
3910 // The CheckAssertionStatusDirectives boolean can be removed from here and
3911 // globals.hpp after the AssertionStatusDirectives class has been integrated
3912 // into merlin "for some time." Without it, the vm will fail with early
3913 // merlin builds.
3914
3915 if (CheckAssertionStatusDirectives) {
3916 const char* nm = "java/lang/AssertionStatusDirectives";
3917 const char* sig = "[Ljava/lang/String;";
3918 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3919 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3920 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3921 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3922 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3923 }
3924
3925 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3926 }
3927
3928 #endif // PRODUCT
3929
3930 int InjectedField::compute_offset() {
3931 InstanceKlass* ik = InstanceKlass::cast(klass());
3932 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
3933 if (!may_be_java && !fs.access_flags().is_internal()) {
3934 // Only look at injected fields
3935 continue;
3936 }
3937 if (fs.name() == name() && fs.signature() == signature()) {
3938 return fs.offset();
3939 }
3940 }
3941 ResourceMark rm;
3942 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)" : "");
3943 #ifndef PRODUCT
3944 ik->print();
3945 tty->print_cr("all fields:");
3946 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
3947 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3948 }
3949 #endif //PRODUCT
3950 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:classload=info to see the origin of the problem class");
3951 return -1;
3952 }
3953
3954 void javaClasses_init() {
3955 JavaClasses::compute_offsets();
3956 JavaClasses::check_offsets();
3957 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3958 }