1 /*
2 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/altHashing.hpp"
27 #include "classfile/javaClasses.inline.hpp"
28 #include "classfile/stringTable.hpp"
29 #include "classfile/vmSymbols.hpp"
30 #include "code/debugInfo.hpp"
31 #include "code/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 -XX:+TraceClassLoading 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 oop java_lang_Throwable::unassigned_stacktrace() {
1443 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1444 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1445 if (UseCompressedOops) {
1446 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1447 } else {
1448 return oopDesc::load_decode_heap_oop((oop*)addr);
1449 }
1450 }
1451
1452 oop java_lang_Throwable::backtrace(oop throwable) {
1453 return throwable->obj_field_acquire(backtrace_offset);
1454 }
1455
1456
1457 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1458 throwable->release_obj_field_put(backtrace_offset, value);
1459 }
1460
1461
1462 oop java_lang_Throwable::message(oop throwable) {
1463 return throwable->obj_field(detailMessage_offset);
1464 }
1465
1466
1467 oop java_lang_Throwable::message(Handle throwable) {
1468 return throwable->obj_field(detailMessage_offset);
1469 }
1470
1471
1472 // Return Symbol for detailed_message or NULL
1473 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1474 PRESERVE_EXCEPTION_MARK; // Keep original exception
1475 oop detailed_message = java_lang_Throwable::message(throwable);
1476 if (detailed_message != NULL) {
1477 return java_lang_String::as_symbol(detailed_message, THREAD);
1478 }
1479 return NULL;
1480 }
1481
1482 void java_lang_Throwable::set_message(oop throwable, oop value) {
1483 throwable->obj_field_put(detailMessage_offset, value);
1484 }
1485
1486
1487 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1488 throwable->obj_field_put(stackTrace_offset, st_element_array);
1489 }
1490
1491 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1492 set_stacktrace(throwable, NULL);
1493 }
1494
1495
1496 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1497 ResourceMark rm;
1498 Klass* k = throwable->klass();
1499 assert(k != NULL, "just checking");
1500 st->print("%s", k->external_name());
1501 oop msg = message(throwable);
1502 if (msg != NULL) {
1503 st->print(": %s", java_lang_String::as_utf8_string(msg));
1504 }
1505 }
1506
1507
1508 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1509 ResourceMark rm;
1510 Klass* k = throwable->klass();
1511 assert(k != NULL, "just checking");
1512 st->print("%s", k->external_name());
1513 oop msg = message(throwable);
1514 if (msg != NULL) {
1515 st->print(": %s", java_lang_String::as_utf8_string(msg));
1516 }
1517 }
1518
1519 // After this many redefines, the stack trace is unreliable.
1520 const int MAX_VERSION = USHRT_MAX;
1521
1522 // Helper backtrace functions to store bci|version together.
1523 static inline int merge_bci_and_version(int bci, int version) {
1524 // only store u2 for version, checking for overflow.
1525 if (version > USHRT_MAX || version < 0) version = MAX_VERSION;
1526 assert((jushort)bci == bci, "bci should be short");
1527 return build_int_from_shorts(version, bci);
1528 }
1529
1530 static inline int bci_at(unsigned int merged) {
1531 return extract_high_short_from_int(merged);
1532 }
1533 static inline int version_at(unsigned int merged) {
1534 return extract_low_short_from_int(merged);
1535 }
1536
1537 static inline bool version_matches(Method* method, int version) {
1538 assert(version < MAX_VERSION, "version is too big");
1539 return method != NULL && (method->constants()->version() == version);
1540 }
1541
1542 static inline int get_line_number(Method* method, int bci) {
1543 int line_number = 0;
1544 if (method->is_native()) {
1545 // Negative value different from -1 below, enabling Java code in
1546 // class java.lang.StackTraceElement to distinguish "native" from
1547 // "no LineNumberTable". JDK tests for -2.
1548 line_number = -2;
1549 } else {
1550 // Returns -1 if no LineNumberTable, and otherwise actual line number
1551 line_number = method->line_number_from_bci(bci);
1552 if (line_number == -1 && ShowHiddenFrames) {
1553 line_number = bci + 1000000;
1554 }
1555 }
1556 return line_number;
1557 }
1558
1559 // This class provides a simple wrapper over the internal structure of
1560 // exception backtrace to insulate users of the backtrace from needing
1561 // to know what it looks like.
1562 class BacktraceBuilder: public StackObj {
1563 private:
1564 Handle _backtrace;
1565 objArrayOop _head;
1566 typeArrayOop _methods;
1567 typeArrayOop _bcis;
1568 objArrayOop _mirrors;
1569 typeArrayOop _cprefs; // needed to insulate method name against redefinition
1570 int _index;
1571 No_Safepoint_Verifier _nsv;
1572
1573 public:
1574
1575 enum {
1576 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1577 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1578 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1579 trace_cprefs_offset = java_lang_Throwable::trace_cprefs_offset,
1580 trace_next_offset = java_lang_Throwable::trace_next_offset,
1581 trace_size = java_lang_Throwable::trace_size,
1582 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1583 };
1584
1585 // get info out of chunks
1586 static typeArrayOop get_methods(objArrayHandle chunk) {
1587 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1588 assert(methods != NULL, "method array should be initialized in backtrace");
1589 return methods;
1590 }
1591 static typeArrayOop get_bcis(objArrayHandle chunk) {
1592 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1593 assert(bcis != NULL, "bci array should be initialized in backtrace");
1594 return bcis;
1595 }
1596 static objArrayOop get_mirrors(objArrayHandle chunk) {
1597 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1598 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1599 return mirrors;
1600 }
1601 static typeArrayOop get_cprefs(objArrayHandle chunk) {
1602 typeArrayOop cprefs = typeArrayOop(chunk->obj_at(trace_cprefs_offset));
1603 assert(cprefs != NULL, "cprefs array should be initialized in backtrace");
1604 return cprefs;
1605 }
1606
1607 // constructor for new backtrace
1608 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _cprefs(NULL) {
1609 expand(CHECK);
1610 _backtrace = _head;
1611 _index = 0;
1612 }
1613
1614 BacktraceBuilder(objArrayHandle backtrace) {
1615 _methods = get_methods(backtrace);
1616 _bcis = get_bcis(backtrace);
1617 _mirrors = get_mirrors(backtrace);
1618 _cprefs = get_cprefs(backtrace);
1619 assert(_methods->length() == _bcis->length() &&
1620 _methods->length() == _mirrors->length(),
1621 "method and source information arrays should match");
1622
1623 // head is the preallocated backtrace
1624 _backtrace = _head = backtrace();
1625 _index = 0;
1626 }
1627
1628 void expand(TRAPS) {
1629 objArrayHandle old_head(THREAD, _head);
1630 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1631
1632 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1633 objArrayHandle new_head(THREAD, head);
1634
1635 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1636 typeArrayHandle new_methods(THREAD, methods);
1637
1638 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1639 typeArrayHandle new_bcis(THREAD, bcis);
1640
1641 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1642 objArrayHandle new_mirrors(THREAD, mirrors);
1643
1644 typeArrayOop cprefs = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1645 typeArrayHandle new_cprefs(THREAD, cprefs);
1646
1647 if (!old_head.is_null()) {
1648 old_head->obj_at_put(trace_next_offset, new_head());
1649 }
1650 new_head->obj_at_put(trace_methods_offset, new_methods());
1651 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1652 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1653 new_head->obj_at_put(trace_cprefs_offset, new_cprefs());
1654
1655 _head = new_head();
1656 _methods = new_methods();
1657 _bcis = new_bcis();
1658 _mirrors = new_mirrors();
1659 _cprefs = new_cprefs();
1660 _index = 0;
1661 }
1662
1663 oop backtrace() {
1664 return _backtrace();
1665 }
1666
1667 inline void push(Method* method, int bci, TRAPS) {
1668 // Smear the -1 bci to 0 since the array only holds unsigned
1669 // shorts. The later line number lookup would just smear the -1
1670 // to a 0 even if it could be recorded.
1671 if (bci == SynchronizationEntryBCI) bci = 0;
1672
1673 if (_index >= trace_chunk_size) {
1674 methodHandle mhandle(THREAD, method);
1675 expand(CHECK);
1676 method = mhandle();
1677 }
1678
1679 _methods->short_at_put(_index, method->orig_method_idnum());
1680 _bcis->int_at_put(_index, merge_bci_and_version(bci, method->constants()->version()));
1681 _cprefs->short_at_put(_index, method->name_index());
1682
1683 // We need to save the mirrors in the backtrace to keep the class
1684 // from being unloaded while we still have this stack trace.
1685 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1686 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1687 _index++;
1688 }
1689
1690 };
1691
1692 Symbol* get_source_file_name(InstanceKlass* holder, int version) {
1693 // Find the specific ik version that contains this source_file_name_index
1694 // via the previous versions list, but use the current version's
1695 // constant pool to look it up. The previous version's index has been
1696 // merged for the current constant pool.
1697 InstanceKlass* ik = holder->get_klass_version(version);
1698 // This version has been cleaned up.
1699 if (ik == NULL) return NULL;
1700 int source_file_name_index = ik->source_file_name_index();
1701 return (source_file_name_index == 0) ?
1702 (Symbol*)NULL : holder->constants()->symbol_at(source_file_name_index);
1703 }
1704
1705 // Print stack trace element to resource allocated buffer
1706 char* java_lang_Throwable::print_stack_element_to_buffer(Handle mirror,
1707 int method_id, int version, int bci, int cpref) {
1708
1709 // Get strings and string lengths
1710 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1711 const char* klass_name = holder->external_name();
1712 int buf_len = (int)strlen(klass_name);
1713
1714 Method* method = holder->method_with_orig_idnum(method_id, version);
1715
1716 // The method can be NULL if the requested class version is gone
1717 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
1718 char* method_name = sym->as_C_string();
1719 buf_len += (int)strlen(method_name);
1720
1721 char* source_file_name = NULL;
1722 Symbol* source = get_source_file_name(holder, version);
1723 if (source != NULL) {
1724 source_file_name = source->as_C_string();
1725 buf_len += (int)strlen(source_file_name);
1726 }
1727
1728 // Allocate temporary buffer with extra space for formatting and line number
1729 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1730
1731 // Print stack trace line in buffer
1732 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1733
1734 if (!version_matches(method, version)) {
1735 strcat(buf, "(Redefined)");
1736 } else {
1737 int line_number = get_line_number(method, bci);
1738 if (line_number == -2) {
1739 strcat(buf, "(Native Method)");
1740 } else {
1741 if (source_file_name != NULL && (line_number != -1)) {
1742 // Sourcename and linenumber
1743 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1744 } else if (source_file_name != NULL) {
1745 // Just sourcename
1746 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1747 } else {
1748 // Neither sourcename nor linenumber
1749 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1750 }
1751 nmethod* nm = method->code();
1752 if (WizardMode && nm != NULL) {
1753 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1754 }
1755 }
1756 }
1757
1758 return buf;
1759 }
1760
1761 void java_lang_Throwable::print_stack_element(outputStream *st, Handle mirror,
1762 int method_id, int version, int bci, int cpref) {
1763 ResourceMark rm;
1764 char* buf = print_stack_element_to_buffer(mirror, method_id, version, bci, cpref);
1765 st->print_cr("%s", buf);
1766 }
1767
1768 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
1769 Handle mirror = method->method_holder()->java_mirror();
1770 int method_id = method->orig_method_idnum();
1771 int version = method->constants()->version();
1772 int cpref = method->name_index();
1773 print_stack_element(st, mirror, method_id, version, bci, cpref);
1774 }
1775
1776 const char* java_lang_Throwable::no_stack_trace_message() {
1777 return "\t<<no stack trace available>>";
1778 }
1779
1780
1781 // Currently used only for exceptions occurring during startup
1782 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1783 Thread *THREAD = Thread::current();
1784 Handle h_throwable(THREAD, throwable);
1785 while (h_throwable.not_null()) {
1786 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1787 if (result.is_null()) {
1788 st->print_raw_cr(no_stack_trace_message());
1789 return;
1790 }
1791
1792 while (result.not_null()) {
1793
1794 // Get method id, bci, version and mirror from chunk
1795 typeArrayHandle methods (THREAD, BacktraceBuilder::get_methods(result));
1796 typeArrayHandle bcis (THREAD, BacktraceBuilder::get_bcis(result));
1797 objArrayHandle mirrors (THREAD, BacktraceBuilder::get_mirrors(result));
1798 typeArrayHandle cprefs (THREAD, BacktraceBuilder::get_cprefs(result));
1799
1800 int length = methods()->length();
1801 for (int index = 0; index < length; index++) {
1802 Handle mirror(THREAD, mirrors->obj_at(index));
1803 // NULL mirror means end of stack trace
1804 if (mirror.is_null()) goto handle_cause;
1805 int method = methods->short_at(index);
1806 int version = version_at(bcis->int_at(index));
1807 int bci = bci_at(bcis->int_at(index));
1808 int cpref = cprefs->short_at(index);
1809 print_stack_element(st, mirror, method, version, bci, cpref);
1810 }
1811 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1812 }
1813 handle_cause:
1814 {
1815 EXCEPTION_MARK;
1816 JavaValue cause(T_OBJECT);
1817 JavaCalls::call_virtual(&cause,
1818 h_throwable,
1819 KlassHandle(THREAD, h_throwable->klass()),
1820 vmSymbols::getCause_name(),
1821 vmSymbols::void_throwable_signature(),
1822 THREAD);
1823 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1824 if (HAS_PENDING_EXCEPTION) {
1825 CLEAR_PENDING_EXCEPTION;
1826 h_throwable = Handle();
1827 } else {
1828 h_throwable = Handle(THREAD, (oop) cause.get_jobject());
1829 if (h_throwable.not_null()) {
1830 st->print("Caused by: ");
1831 print(h_throwable, st);
1832 st->cr();
1833 }
1834 }
1835 }
1836 }
1837 }
1838
1839 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
1840 if (!StackTraceInThrowable) return;
1841 ResourceMark rm(THREAD);
1842
1843 // Start out by clearing the backtrace for this object, in case the VM
1844 // runs out of memory while allocating the stack trace
1845 set_backtrace(throwable(), NULL);
1846 // Clear lazily constructed Java level stacktrace if refilling occurs
1847 // This is unnecessary in 1.7+ but harmless
1848 clear_stacktrace(throwable());
1849
1850 int max_depth = MaxJavaStackTraceDepth;
1851 JavaThread* thread = (JavaThread*)THREAD;
1852 BacktraceBuilder bt(CHECK);
1853
1854 // If there is no Java frame just return the method that was being called
1855 // with bci 0
1856 if (!thread->has_last_Java_frame()) {
1857 if (max_depth >= 1 && method() != NULL) {
1858 bt.push(method(), 0, CHECK);
1859 set_backtrace(throwable(), bt.backtrace());
1860 }
1861 return;
1862 }
1863
1864 // Instead of using vframe directly, this version of fill_in_stack_trace
1865 // basically handles everything by hand. This significantly improved the
1866 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1867 // See bug 6333838 for more details.
1868 // The "ASSERT" here is to verify this method generates the exactly same stack
1869 // trace as utilizing vframe.
1870 #ifdef ASSERT
1871 vframeStream st(thread);
1872 methodHandle st_method(THREAD, st.method());
1873 #endif
1874 int total_count = 0;
1875 RegisterMap map(thread, false);
1876 int decode_offset = 0;
1877 nmethod* nm = NULL;
1878 bool skip_fillInStackTrace_check = false;
1879 bool skip_throwableInit_check = false;
1880 bool skip_hidden = !ShowHiddenFrames;
1881
1882 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1883 Method* method = NULL;
1884 int bci = 0;
1885
1886 // Compiled java method case.
1887 if (decode_offset != 0) {
1888 DebugInfoReadStream stream(nm, decode_offset);
1889 decode_offset = stream.read_int();
1890 method = (Method*)nm->metadata_at(stream.read_int());
1891 bci = stream.read_bci();
1892 } else {
1893 if (fr.is_first_frame()) break;
1894 address pc = fr.pc();
1895 if (fr.is_interpreted_frame()) {
1896 address bcp = fr.interpreter_frame_bcp();
1897 method = fr.interpreter_frame_method();
1898 bci = method->bci_from(bcp);
1899 fr = fr.sender(&map);
1900 } else {
1901 CodeBlob* cb = fr.cb();
1902 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1903 // but non nmethod
1904 fr = fr.sender(&map);
1905 if (cb == NULL || !cb->is_nmethod()) {
1906 continue;
1907 }
1908 nm = (nmethod*)cb;
1909 if (nm->method()->is_native()) {
1910 method = nm->method();
1911 bci = 0;
1912 } else {
1913 PcDesc* pd = nm->pc_desc_at(pc);
1914 decode_offset = pd->scope_decode_offset();
1915 // if decode_offset is not equal to 0, it will execute the
1916 // "compiled java method case" at the beginning of the loop.
1917 continue;
1918 }
1919 }
1920 }
1921 #ifdef ASSERT
1922 assert(st_method() == method && st.bci() == bci,
1923 "Wrong stack trace");
1924 st.next();
1925 // vframeStream::method isn't GC-safe so store off a copy
1926 // of the Method* in case we GC.
1927 if (!st.at_end()) {
1928 st_method = st.method();
1929 }
1930 #endif
1931
1932 // the format of the stacktrace will be:
1933 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1934 // - 0 or more <init> methods for the exception class (skipped)
1935 // - rest of the stack
1936
1937 if (!skip_fillInStackTrace_check) {
1938 if (method->name() == vmSymbols::fillInStackTrace_name() &&
1939 throwable->is_a(method->method_holder())) {
1940 continue;
1941 }
1942 else {
1943 skip_fillInStackTrace_check = true; // gone past them all
1944 }
1945 }
1946 if (!skip_throwableInit_check) {
1947 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1948
1949 // skip <init> methods of the exception class and superclasses
1950 // This is simlar to classic VM.
1951 if (method->name() == vmSymbols::object_initializer_name() &&
1952 throwable->is_a(method->method_holder())) {
1953 continue;
1954 } else {
1955 // there are none or we've seen them all - either way stop checking
1956 skip_throwableInit_check = true;
1957 }
1958 }
1959 if (method->is_hidden()) {
1960 if (skip_hidden) continue;
1961 }
1962 bt.push(method, bci, CHECK);
1963 total_count++;
1964 }
1965
1966 // Put completed stack trace into throwable object
1967 set_backtrace(throwable(), bt.backtrace());
1968 }
1969
1970 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
1971 // No-op if stack trace is disabled
1972 if (!StackTraceInThrowable) {
1973 return;
1974 }
1975
1976 // Disable stack traces for some preallocated out of memory errors
1977 if (!Universe::should_fill_in_stack_trace(throwable)) {
1978 return;
1979 }
1980
1981 PRESERVE_EXCEPTION_MARK;
1982
1983 JavaThread* thread = JavaThread::active();
1984 fill_in_stack_trace(throwable, method, thread);
1985 // ignore exceptions thrown during stack trace filling
1986 CLEAR_PENDING_EXCEPTION;
1987 }
1988
1989 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
1990 // Allocate stack trace - backtrace is created but not filled in
1991
1992 // No-op if stack trace is disabled
1993 if (!StackTraceInThrowable) return;
1994 BacktraceBuilder bt(CHECK); // creates a backtrace
1995 set_backtrace(throwable(), bt.backtrace());
1996 }
1997
1998
1999 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2000 // Fill in stack trace into preallocated backtrace (no GC)
2001
2002 // No-op if stack trace is disabled
2003 if (!StackTraceInThrowable) return;
2004
2005 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2006
2007 JavaThread* THREAD = JavaThread::current();
2008
2009 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2010 assert(backtrace.not_null(), "backtrace should have been preallocated");
2011
2012 ResourceMark rm(THREAD);
2013 vframeStream st(THREAD);
2014
2015 BacktraceBuilder bt(backtrace);
2016
2017 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2018 // methods as preallocated errors aren't created by "java" code.
2019
2020 // fill in as much stack trace as possible
2021 typeArrayOop methods = BacktraceBuilder::get_methods(backtrace);
2022 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth);
2023 int chunk_count = 0;
2024
2025 for (;!st.at_end(); st.next()) {
2026 bt.push(st.method(), st.bci(), CHECK);
2027 chunk_count++;
2028
2029 // Bail-out for deep stacks
2030 if (chunk_count >= max_chunks) break;
2031 }
2032
2033 // We support the Throwable immutability protocol defined for Java 7.
2034 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2035 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2036 }
2037
2038
2039 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) {
2040 if (throwable == NULL) {
2041 THROW_0(vmSymbols::java_lang_NullPointerException());
2042 }
2043 objArrayOop chunk = objArrayOop(backtrace(throwable));
2044 int depth = 0;
2045 if (chunk != NULL) {
2046 // Iterate over chunks and count full ones
2047 while (true) {
2048 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset));
2049 if (next == NULL) break;
2050 depth += trace_chunk_size;
2051 chunk = next;
2052 }
2053 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check");
2054 // Count element in remaining partial chunk. NULL value for mirror
2055 // marks the end of the stack trace elements that are saved.
2056 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
2057 assert(mirrors != NULL, "sanity check");
2058 for (int i = 0; i < mirrors->length(); i++) {
2059 if (mirrors->obj_at(i) == NULL) break;
2060 depth++;
2061 }
2062 }
2063 return depth;
2064 }
2065
2066
2067 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
2068 if (throwable == NULL) {
2069 THROW_0(vmSymbols::java_lang_NullPointerException());
2070 }
2071 if (index < 0) {
2072 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
2073 }
2074 // Compute how many chunks to skip and index into actual chunk
2075 objArrayOop chunk = objArrayOop(backtrace(throwable));
2076 int skip_chunks = index / trace_chunk_size;
2077 int chunk_index = index % trace_chunk_size;
2078 while (chunk != NULL && skip_chunks > 0) {
2079 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
2080 skip_chunks--;
2081 }
2082 if (chunk == NULL) {
2083 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
2084 }
2085 // Get method id, bci, version, mirror and cpref from chunk
2086 typeArrayOop methods = BacktraceBuilder::get_methods(chunk);
2087 typeArrayOop bcis = BacktraceBuilder::get_bcis(chunk);
2088 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
2089 typeArrayOop cprefs = BacktraceBuilder::get_cprefs(chunk);
2090
2091 assert(methods != NULL && bcis != NULL && mirrors != NULL, "sanity check");
2092
2093 int method = methods->short_at(chunk_index);
2094 int version = version_at(bcis->int_at(chunk_index));
2095 int bci = bci_at(bcis->int_at(chunk_index));
2096 int cpref = cprefs->short_at(chunk_index);
2097 Handle mirror(THREAD, mirrors->obj_at(chunk_index));
2098
2099 // Chunk can be partial full
2100 if (mirror.is_null()) {
2101 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
2102 }
2103 oop element = java_lang_StackTraceElement::create(mirror, method, version, bci, cpref, CHECK_0);
2104 return element;
2105 }
2106
2107 oop java_lang_StackTraceElement::create(Handle mirror, int method_id,
2108 int version, int bci, int cpref, TRAPS) {
2109 // Allocate java.lang.StackTraceElement instance
2110 Klass* k = SystemDictionary::StackTraceElement_klass();
2111 assert(k != NULL, "must be loaded in 1.4+");
2112 instanceKlassHandle ik (THREAD, k);
2113 if (ik->should_be_initialized()) {
2114 ik->initialize(CHECK_0);
2115 }
2116
2117 Handle element = ik->allocate_instance_handle(CHECK_0);
2118 // Fill in class name
2119 ResourceMark rm(THREAD);
2120 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2121 const char* str = holder->external_name();
2122 oop classname = StringTable::intern((char*) str, CHECK_0);
2123 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2124
2125 Method* method = holder->method_with_orig_idnum(method_id, version);
2126
2127 // The method can be NULL if the requested class version is gone
2128 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
2129
2130 // Fill in method name
2131 oop methodname = StringTable::intern(sym, CHECK_0);
2132 java_lang_StackTraceElement::set_methodName(element(), methodname);
2133
2134 if (!version_matches(method, version)) {
2135 // The method was redefined, accurate line number information isn't available
2136 java_lang_StackTraceElement::set_fileName(element(), NULL);
2137 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2138 } else {
2139 // Fill in source file name and line number.
2140 Symbol* source = get_source_file_name(holder, version);
2141 if (ShowHiddenFrames && source == NULL)
2142 source = vmSymbols::unknown_class_name();
2143 oop filename = StringTable::intern(source, CHECK_0);
2144 java_lang_StackTraceElement::set_fileName(element(), filename);
2145
2146 int line_number = get_line_number(method, bci);
2147 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2148 }
2149 return element();
2150 }
2151
2152 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2153 Handle mirror (THREAD, method->method_holder()->java_mirror());
2154 int method_id = method->orig_method_idnum();
2155 int cpref = method->name_index();
2156 return create(mirror, method_id, method->constants()->version(), bci, cpref, THREAD);
2157 }
2158
2159 void java_lang_reflect_AccessibleObject::compute_offsets() {
2160 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
2161 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
2162 }
2163
2164 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2165 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2166 return (jboolean) reflect->bool_field(override_offset);
2167 }
2168
2169 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2170 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2171 reflect->bool_field_put(override_offset, (int) value);
2172 }
2173
2174 void java_lang_reflect_Method::compute_offsets() {
2175 Klass* k = SystemDictionary::reflect_Method_klass();
2176 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2177 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2178 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
2179 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2180 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2181 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2182 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2183 // The generic signature and annotations fields are only present in 1.5
2184 signature_offset = -1;
2185 annotations_offset = -1;
2186 parameter_annotations_offset = -1;
2187 annotation_default_offset = -1;
2188 type_annotations_offset = -1;
2189 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2190 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2191 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2192 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
2193 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2194 }
2195
2196 Handle java_lang_reflect_Method::create(TRAPS) {
2197 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2198 Klass* klass = SystemDictionary::reflect_Method_klass();
2199 // This class is eagerly initialized during VM initialization, since we keep a refence
2200 // to one of the methods
2201 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2202 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2203 }
2204
2205 oop java_lang_reflect_Method::clazz(oop reflect) {
2206 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2207 return reflect->obj_field(clazz_offset);
2208 }
2209
2210 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2211 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2212 reflect->obj_field_put(clazz_offset, value);
2213 }
2214
2215 int java_lang_reflect_Method::slot(oop reflect) {
2216 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2217 return reflect->int_field(slot_offset);
2218 }
2219
2220 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2221 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2222 reflect->int_field_put(slot_offset, value);
2223 }
2224
2225 oop java_lang_reflect_Method::name(oop method) {
2226 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2227 return method->obj_field(name_offset);
2228 }
2229
2230 void java_lang_reflect_Method::set_name(oop method, oop value) {
2231 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2232 method->obj_field_put(name_offset, value);
2233 }
2234
2235 oop java_lang_reflect_Method::return_type(oop method) {
2236 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2237 return method->obj_field(returnType_offset);
2238 }
2239
2240 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2241 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2242 method->obj_field_put(returnType_offset, value);
2243 }
2244
2245 oop java_lang_reflect_Method::parameter_types(oop method) {
2246 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2247 return method->obj_field(parameterTypes_offset);
2248 }
2249
2250 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2251 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2252 method->obj_field_put(parameterTypes_offset, value);
2253 }
2254
2255 oop java_lang_reflect_Method::exception_types(oop method) {
2256 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2257 return method->obj_field(exceptionTypes_offset);
2258 }
2259
2260 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2261 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2262 method->obj_field_put(exceptionTypes_offset, value);
2263 }
2264
2265 int java_lang_reflect_Method::modifiers(oop method) {
2266 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2267 return method->int_field(modifiers_offset);
2268 }
2269
2270 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2271 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2272 method->int_field_put(modifiers_offset, value);
2273 }
2274
2275 bool java_lang_reflect_Method::has_signature_field() {
2276 return (signature_offset >= 0);
2277 }
2278
2279 oop java_lang_reflect_Method::signature(oop method) {
2280 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2281 assert(has_signature_field(), "signature field must be present");
2282 return method->obj_field(signature_offset);
2283 }
2284
2285 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2286 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2287 assert(has_signature_field(), "signature field must be present");
2288 method->obj_field_put(signature_offset, value);
2289 }
2290
2291 bool java_lang_reflect_Method::has_annotations_field() {
2292 return (annotations_offset >= 0);
2293 }
2294
2295 oop java_lang_reflect_Method::annotations(oop method) {
2296 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2297 assert(has_annotations_field(), "annotations field must be present");
2298 return method->obj_field(annotations_offset);
2299 }
2300
2301 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2302 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2303 assert(has_annotations_field(), "annotations field must be present");
2304 method->obj_field_put(annotations_offset, value);
2305 }
2306
2307 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2308 return (parameter_annotations_offset >= 0);
2309 }
2310
2311 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2312 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2313 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2314 return method->obj_field(parameter_annotations_offset);
2315 }
2316
2317 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2318 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2319 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2320 method->obj_field_put(parameter_annotations_offset, value);
2321 }
2322
2323 bool java_lang_reflect_Method::has_annotation_default_field() {
2324 return (annotation_default_offset >= 0);
2325 }
2326
2327 oop java_lang_reflect_Method::annotation_default(oop method) {
2328 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2329 assert(has_annotation_default_field(), "annotation default field must be present");
2330 return method->obj_field(annotation_default_offset);
2331 }
2332
2333 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2334 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2335 assert(has_annotation_default_field(), "annotation default field must be present");
2336 method->obj_field_put(annotation_default_offset, value);
2337 }
2338
2339 bool java_lang_reflect_Method::has_type_annotations_field() {
2340 return (type_annotations_offset >= 0);
2341 }
2342
2343 oop java_lang_reflect_Method::type_annotations(oop method) {
2344 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2345 assert(has_type_annotations_field(), "type_annotations field must be present");
2346 return method->obj_field(type_annotations_offset);
2347 }
2348
2349 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2350 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2351 assert(has_type_annotations_field(), "type_annotations field must be present");
2352 method->obj_field_put(type_annotations_offset, value);
2353 }
2354
2355 void java_lang_reflect_Constructor::compute_offsets() {
2356 Klass* k = SystemDictionary::reflect_Constructor_klass();
2357 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2358 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2359 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2360 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2361 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2362 // The generic signature and annotations fields are only present in 1.5
2363 signature_offset = -1;
2364 annotations_offset = -1;
2365 parameter_annotations_offset = -1;
2366 type_annotations_offset = -1;
2367 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2368 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2369 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2370 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2371 }
2372
2373 Handle java_lang_reflect_Constructor::create(TRAPS) {
2374 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2375 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2376 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2377 instanceKlassHandle klass (THREAD, k);
2378 // Ensure it is initialized
2379 klass->initialize(CHECK_NH);
2380 return klass->allocate_instance_handle(THREAD);
2381 }
2382
2383 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2384 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2385 return reflect->obj_field(clazz_offset);
2386 }
2387
2388 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2389 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2390 reflect->obj_field_put(clazz_offset, value);
2391 }
2392
2393 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2394 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2395 return constructor->obj_field(parameterTypes_offset);
2396 }
2397
2398 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2399 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2400 constructor->obj_field_put(parameterTypes_offset, value);
2401 }
2402
2403 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2404 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2405 return constructor->obj_field(exceptionTypes_offset);
2406 }
2407
2408 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2409 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2410 constructor->obj_field_put(exceptionTypes_offset, value);
2411 }
2412
2413 int java_lang_reflect_Constructor::slot(oop reflect) {
2414 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2415 return reflect->int_field(slot_offset);
2416 }
2417
2418 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2419 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2420 reflect->int_field_put(slot_offset, value);
2421 }
2422
2423 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2424 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2425 return constructor->int_field(modifiers_offset);
2426 }
2427
2428 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2429 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2430 constructor->int_field_put(modifiers_offset, value);
2431 }
2432
2433 bool java_lang_reflect_Constructor::has_signature_field() {
2434 return (signature_offset >= 0);
2435 }
2436
2437 oop java_lang_reflect_Constructor::signature(oop constructor) {
2438 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2439 assert(has_signature_field(), "signature field must be present");
2440 return constructor->obj_field(signature_offset);
2441 }
2442
2443 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2444 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2445 assert(has_signature_field(), "signature field must be present");
2446 constructor->obj_field_put(signature_offset, value);
2447 }
2448
2449 bool java_lang_reflect_Constructor::has_annotations_field() {
2450 return (annotations_offset >= 0);
2451 }
2452
2453 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2454 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2455 assert(has_annotations_field(), "annotations field must be present");
2456 return constructor->obj_field(annotations_offset);
2457 }
2458
2459 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2460 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2461 assert(has_annotations_field(), "annotations field must be present");
2462 constructor->obj_field_put(annotations_offset, value);
2463 }
2464
2465 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2466 return (parameter_annotations_offset >= 0);
2467 }
2468
2469 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2470 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2471 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2472 return method->obj_field(parameter_annotations_offset);
2473 }
2474
2475 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2476 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2477 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2478 method->obj_field_put(parameter_annotations_offset, value);
2479 }
2480
2481 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2482 return (type_annotations_offset >= 0);
2483 }
2484
2485 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2486 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2487 assert(has_type_annotations_field(), "type_annotations field must be present");
2488 return constructor->obj_field(type_annotations_offset);
2489 }
2490
2491 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2492 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2493 assert(has_type_annotations_field(), "type_annotations field must be present");
2494 constructor->obj_field_put(type_annotations_offset, value);
2495 }
2496
2497 void java_lang_reflect_Field::compute_offsets() {
2498 Klass* k = SystemDictionary::reflect_Field_klass();
2499 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2500 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2501 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2502 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2503 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2504 // The generic signature and annotations fields are only present in 1.5
2505 signature_offset = -1;
2506 annotations_offset = -1;
2507 type_annotations_offset = -1;
2508 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2509 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2510 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2511 }
2512
2513 Handle java_lang_reflect_Field::create(TRAPS) {
2514 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2515 Symbol* name = vmSymbols::java_lang_reflect_Field();
2516 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2517 instanceKlassHandle klass (THREAD, k);
2518 // Ensure it is initialized
2519 klass->initialize(CHECK_NH);
2520 return klass->allocate_instance_handle(THREAD);
2521 }
2522
2523 oop java_lang_reflect_Field::clazz(oop reflect) {
2524 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2525 return reflect->obj_field(clazz_offset);
2526 }
2527
2528 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2529 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2530 reflect->obj_field_put(clazz_offset, value);
2531 }
2532
2533 oop java_lang_reflect_Field::name(oop field) {
2534 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2535 return field->obj_field(name_offset);
2536 }
2537
2538 void java_lang_reflect_Field::set_name(oop field, oop value) {
2539 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2540 field->obj_field_put(name_offset, value);
2541 }
2542
2543 oop java_lang_reflect_Field::type(oop field) {
2544 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2545 return field->obj_field(type_offset);
2546 }
2547
2548 void java_lang_reflect_Field::set_type(oop field, oop value) {
2549 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2550 field->obj_field_put(type_offset, value);
2551 }
2552
2553 int java_lang_reflect_Field::slot(oop reflect) {
2554 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2555 return reflect->int_field(slot_offset);
2556 }
2557
2558 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2559 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2560 reflect->int_field_put(slot_offset, value);
2561 }
2562
2563 int java_lang_reflect_Field::modifiers(oop field) {
2564 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2565 return field->int_field(modifiers_offset);
2566 }
2567
2568 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2569 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2570 field->int_field_put(modifiers_offset, value);
2571 }
2572
2573 bool java_lang_reflect_Field::has_signature_field() {
2574 return (signature_offset >= 0);
2575 }
2576
2577 oop java_lang_reflect_Field::signature(oop field) {
2578 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2579 assert(has_signature_field(), "signature field must be present");
2580 return field->obj_field(signature_offset);
2581 }
2582
2583 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2584 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2585 assert(has_signature_field(), "signature field must be present");
2586 field->obj_field_put(signature_offset, value);
2587 }
2588
2589 bool java_lang_reflect_Field::has_annotations_field() {
2590 return (annotations_offset >= 0);
2591 }
2592
2593 oop java_lang_reflect_Field::annotations(oop field) {
2594 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2595 assert(has_annotations_field(), "annotations field must be present");
2596 return field->obj_field(annotations_offset);
2597 }
2598
2599 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2600 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2601 assert(has_annotations_field(), "annotations field must be present");
2602 field->obj_field_put(annotations_offset, value);
2603 }
2604
2605 bool java_lang_reflect_Field::has_type_annotations_field() {
2606 return (type_annotations_offset >= 0);
2607 }
2608
2609 oop java_lang_reflect_Field::type_annotations(oop field) {
2610 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2611 assert(has_type_annotations_field(), "type_annotations field must be present");
2612 return field->obj_field(type_annotations_offset);
2613 }
2614
2615 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2616 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2617 assert(has_type_annotations_field(), "type_annotations field must be present");
2618 field->obj_field_put(type_annotations_offset, value);
2619 }
2620
2621 void sun_reflect_ConstantPool::compute_offsets() {
2622 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2623 // This null test can be removed post beta
2624 if (k != NULL) {
2625 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2626 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2627 }
2628 }
2629
2630 void java_lang_reflect_Parameter::compute_offsets() {
2631 Klass* k = SystemDictionary::reflect_Parameter_klass();
2632 if(NULL != k) {
2633 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2634 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2635 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2636 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2637 }
2638 }
2639
2640 Handle java_lang_reflect_Parameter::create(TRAPS) {
2641 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2642 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2643 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2644 instanceKlassHandle klass (THREAD, k);
2645 // Ensure it is initialized
2646 klass->initialize(CHECK_NH);
2647 return klass->allocate_instance_handle(THREAD);
2648 }
2649
2650 oop java_lang_reflect_Parameter::name(oop param) {
2651 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2652 return param->obj_field(name_offset);
2653 }
2654
2655 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2656 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2657 param->obj_field_put(name_offset, value);
2658 }
2659
2660 int java_lang_reflect_Parameter::modifiers(oop param) {
2661 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2662 return param->int_field(modifiers_offset);
2663 }
2664
2665 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2666 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2667 param->int_field_put(modifiers_offset, value);
2668 }
2669
2670 int java_lang_reflect_Parameter::index(oop param) {
2671 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2672 return param->int_field(index_offset);
2673 }
2674
2675 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2676 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2677 param->int_field_put(index_offset, value);
2678 }
2679
2680 oop java_lang_reflect_Parameter::executable(oop param) {
2681 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2682 return param->obj_field(executable_offset);
2683 }
2684
2685 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2686 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2687 param->obj_field_put(executable_offset, value);
2688 }
2689
2690
2691 Handle sun_reflect_ConstantPool::create(TRAPS) {
2692 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2693 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2694 instanceKlassHandle klass (THREAD, k);
2695 // Ensure it is initialized
2696 klass->initialize(CHECK_NH);
2697 return klass->allocate_instance_handle(THREAD);
2698 }
2699
2700
2701 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2702 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2703 oop mirror = value->pool_holder()->java_mirror();
2704 // Save the mirror to get back the constant pool.
2705 reflect->obj_field_put(_oop_offset, mirror);
2706 }
2707
2708 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2709 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2710
2711 oop mirror = reflect->obj_field(_oop_offset);
2712 Klass* k = java_lang_Class::as_Klass(mirror);
2713 assert(k->is_instance_klass(), "Must be");
2714
2715 // Get the constant pool back from the klass. Since class redefinition
2716 // merges the new constant pool into the old, this is essentially the
2717 // same constant pool as the original. If constant pool merging is
2718 // no longer done in the future, this will have to change to save
2719 // the original.
2720 return InstanceKlass::cast(k)->constants();
2721 }
2722
2723 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2724 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2725 // This null test can be removed post beta
2726 if (k != NULL) {
2727 compute_offset(_base_offset, k,
2728 vmSymbols::base_name(), vmSymbols::object_signature());
2729 }
2730 }
2731
2732 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2733 Klass* k = SystemDictionary::box_klass(type);
2734 if (k == NULL) return NULL;
2735 instanceKlassHandle h (THREAD, k);
2736 if (!h->is_initialized()) h->initialize(CHECK_0);
2737 return h->allocate_instance(THREAD);
2738 }
2739
2740
2741 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2742 oop box = initialize_and_allocate(type, CHECK_0);
2743 if (box == NULL) return NULL;
2744 switch (type) {
2745 case T_BOOLEAN:
2746 box->bool_field_put(value_offset, value->z);
2747 break;
2748 case T_CHAR:
2749 box->char_field_put(value_offset, value->c);
2750 break;
2751 case T_FLOAT:
2752 box->float_field_put(value_offset, value->f);
2753 break;
2754 case T_DOUBLE:
2755 box->double_field_put(long_value_offset, value->d);
2756 break;
2757 case T_BYTE:
2758 box->byte_field_put(value_offset, value->b);
2759 break;
2760 case T_SHORT:
2761 box->short_field_put(value_offset, value->s);
2762 break;
2763 case T_INT:
2764 box->int_field_put(value_offset, value->i);
2765 break;
2766 case T_LONG:
2767 box->long_field_put(long_value_offset, value->j);
2768 break;
2769 default:
2770 return NULL;
2771 }
2772 return box;
2773 }
2774
2775
2776 BasicType java_lang_boxing_object::basic_type(oop box) {
2777 if (box == NULL) return T_ILLEGAL;
2778 BasicType type = SystemDictionary::box_klass_type(box->klass());
2779 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2780 return T_ILLEGAL;
2781 return type;
2782 }
2783
2784
2785 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2786 BasicType type = SystemDictionary::box_klass_type(box->klass());
2787 switch (type) {
2788 case T_BOOLEAN:
2789 value->z = box->bool_field(value_offset);
2790 break;
2791 case T_CHAR:
2792 value->c = box->char_field(value_offset);
2793 break;
2794 case T_FLOAT:
2795 value->f = box->float_field(value_offset);
2796 break;
2797 case T_DOUBLE:
2798 value->d = box->double_field(long_value_offset);
2799 break;
2800 case T_BYTE:
2801 value->b = box->byte_field(value_offset);
2802 break;
2803 case T_SHORT:
2804 value->s = box->short_field(value_offset);
2805 break;
2806 case T_INT:
2807 value->i = box->int_field(value_offset);
2808 break;
2809 case T_LONG:
2810 value->j = box->long_field(long_value_offset);
2811 break;
2812 default:
2813 return T_ILLEGAL;
2814 } // end switch
2815 return type;
2816 }
2817
2818
2819 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2820 BasicType type = SystemDictionary::box_klass_type(box->klass());
2821 switch (type) {
2822 case T_BOOLEAN:
2823 box->bool_field_put(value_offset, value->z);
2824 break;
2825 case T_CHAR:
2826 box->char_field_put(value_offset, value->c);
2827 break;
2828 case T_FLOAT:
2829 box->float_field_put(value_offset, value->f);
2830 break;
2831 case T_DOUBLE:
2832 box->double_field_put(long_value_offset, value->d);
2833 break;
2834 case T_BYTE:
2835 box->byte_field_put(value_offset, value->b);
2836 break;
2837 case T_SHORT:
2838 box->short_field_put(value_offset, value->s);
2839 break;
2840 case T_INT:
2841 box->int_field_put(value_offset, value->i);
2842 break;
2843 case T_LONG:
2844 box->long_field_put(long_value_offset, value->j);
2845 break;
2846 default:
2847 return T_ILLEGAL;
2848 } // end switch
2849 return type;
2850 }
2851
2852
2853 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
2854 switch (type) {
2855 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
2856 case T_CHAR: st->print("%d", value->c); break;
2857 case T_BYTE: st->print("%d", value->b); break;
2858 case T_SHORT: st->print("%d", value->s); break;
2859 case T_INT: st->print("%d", value->i); break;
2860 case T_LONG: st->print(INT64_FORMAT, value->j); break;
2861 case T_FLOAT: st->print("%f", value->f); break;
2862 case T_DOUBLE: st->print("%lf", value->d); break;
2863 default: st->print("type %d?", type); break;
2864 }
2865 }
2866
2867
2868 // Support for java_lang_ref_Reference
2869 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
2870 InstanceKlass* ik = SystemDictionary::Reference_klass();
2871 address addr = ik->static_field_addr(static_lock_offset);
2872 return (HeapWord*) addr;
2873 }
2874
2875 oop java_lang_ref_Reference::pending_list_lock() {
2876 InstanceKlass* ik = SystemDictionary::Reference_klass();
2877 address addr = ik->static_field_addr(static_lock_offset);
2878 if (UseCompressedOops) {
2879 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2880 } else {
2881 return oopDesc::load_decode_heap_oop((oop*)addr);
2882 }
2883 }
2884
2885 HeapWord *java_lang_ref_Reference::pending_list_addr() {
2886 InstanceKlass* ik = SystemDictionary::Reference_klass();
2887 address addr = ik->static_field_addr(static_pending_offset);
2888 // XXX This might not be HeapWord aligned, almost rather be char *.
2889 return (HeapWord*)addr;
2890 }
2891
2892 oop java_lang_ref_Reference::pending_list() {
2893 char *addr = (char *)pending_list_addr();
2894 if (UseCompressedOops) {
2895 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
2896 } else {
2897 return oopDesc::load_decode_heap_oop((oop*)addr);
2898 }
2899 }
2900
2901
2902 // Support for java_lang_ref_SoftReference
2903
2904 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
2905 return ref->long_field(timestamp_offset);
2906 }
2907
2908 jlong java_lang_ref_SoftReference::clock() {
2909 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
2910 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2911 return *offset;
2912 }
2913
2914 void java_lang_ref_SoftReference::set_clock(jlong value) {
2915 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
2916 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
2917 *offset = value;
2918 }
2919
2920 // Support for java_lang_invoke_DirectMethodHandle
2921
2922 int java_lang_invoke_DirectMethodHandle::_member_offset;
2923
2924 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
2925 oop member_name = NULL;
2926 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
2927 assert(is_dmh, "a DirectMethodHandle oop is expected");
2928 if (is_dmh) {
2929 member_name = dmh->obj_field(member_offset_in_bytes());
2930 }
2931 return member_name;
2932 }
2933
2934 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
2935 Klass* klass_oop = SystemDictionary::DirectMethodHandle_klass();
2936 if (klass_oop != NULL) {
2937 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2938 }
2939 }
2940
2941 // Support for java_lang_invoke_MethodHandle
2942
2943 int java_lang_invoke_MethodHandle::_type_offset;
2944 int java_lang_invoke_MethodHandle::_form_offset;
2945
2946 int java_lang_invoke_MemberName::_clazz_offset;
2947 int java_lang_invoke_MemberName::_name_offset;
2948 int java_lang_invoke_MemberName::_type_offset;
2949 int java_lang_invoke_MemberName::_flags_offset;
2950 int java_lang_invoke_MemberName::_vmtarget_offset;
2951 int java_lang_invoke_MemberName::_vmloader_offset;
2952 int java_lang_invoke_MemberName::_vmindex_offset;
2953
2954 int java_lang_invoke_LambdaForm::_vmentry_offset;
2955
2956 void java_lang_invoke_MethodHandle::compute_offsets() {
2957 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
2958 if (klass_oop != NULL) {
2959 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
2960 compute_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
2961 }
2962 }
2963
2964 void java_lang_invoke_MemberName::compute_offsets() {
2965 Klass* klass_oop = SystemDictionary::MemberName_klass();
2966 if (klass_oop != NULL) {
2967 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
2968 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
2969 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
2970 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
2971 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2972 }
2973 }
2974
2975 void java_lang_invoke_LambdaForm::compute_offsets() {
2976 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
2977 if (klass_oop != NULL) {
2978 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
2979 }
2980 }
2981
2982 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
2983 return obj != NULL && is_subclass(obj->klass());
2984 }
2985
2986
2987 oop java_lang_invoke_MethodHandle::type(oop mh) {
2988 return mh->obj_field(_type_offset);
2989 }
2990
2991 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
2992 mh->obj_field_put(_type_offset, mtype);
2993 }
2994
2995 oop java_lang_invoke_MethodHandle::form(oop mh) {
2996 assert(_form_offset != 0, "");
2997 return mh->obj_field(_form_offset);
2998 }
2999
3000 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3001 assert(_form_offset != 0, "");
3002 mh->obj_field_put(_form_offset, lform);
3003 }
3004
3005 /// MemberName accessors
3006
3007 oop java_lang_invoke_MemberName::clazz(oop mname) {
3008 assert(is_instance(mname), "wrong type");
3009 return mname->obj_field(_clazz_offset);
3010 }
3011
3012 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3013 assert(is_instance(mname), "wrong type");
3014 mname->obj_field_put(_clazz_offset, clazz);
3015 }
3016
3017 oop java_lang_invoke_MemberName::name(oop mname) {
3018 assert(is_instance(mname), "wrong type");
3019 return mname->obj_field(_name_offset);
3020 }
3021
3022 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3023 assert(is_instance(mname), "wrong type");
3024 mname->obj_field_put(_name_offset, name);
3025 }
3026
3027 oop java_lang_invoke_MemberName::type(oop mname) {
3028 assert(is_instance(mname), "wrong type");
3029 return mname->obj_field(_type_offset);
3030 }
3031
3032 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3033 assert(is_instance(mname), "wrong type");
3034 mname->obj_field_put(_type_offset, type);
3035 }
3036
3037 int java_lang_invoke_MemberName::flags(oop mname) {
3038 assert(is_instance(mname), "wrong type");
3039 return mname->int_field(_flags_offset);
3040 }
3041
3042 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3043 assert(is_instance(mname), "wrong type");
3044 mname->int_field_put(_flags_offset, flags);
3045 }
3046
3047 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
3048 assert(is_instance(mname), "wrong type");
3049 return (Metadata*)mname->address_field(_vmtarget_offset);
3050 }
3051
3052 bool java_lang_invoke_MemberName::is_method(oop mname) {
3053 assert(is_instance(mname), "must be MemberName");
3054 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3055 }
3056
3057 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
3058 assert(is_instance(mname), "wrong type");
3059 // check the type of the vmtarget
3060 oop dependency = NULL;
3061 if (ref != NULL) {
3062 switch (flags(mname) & (MN_IS_METHOD |
3063 MN_IS_CONSTRUCTOR |
3064 MN_IS_FIELD)) {
3065 case MN_IS_METHOD:
3066 case MN_IS_CONSTRUCTOR:
3067 assert(ref->is_method(), "should be a method");
3068 dependency = ((Method*)ref)->method_holder()->java_mirror();
3069 break;
3070 case MN_IS_FIELD:
3071 assert(ref->is_klass(), "should be a class");
3072 dependency = ((Klass*)ref)->java_mirror();
3073 break;
3074 default:
3075 ShouldNotReachHere();
3076 }
3077 }
3078 mname->address_field_put(_vmtarget_offset, (address)ref);
3079 // Add a reference to the loader (actually mirror because anonymous classes will not have
3080 // distinct loaders) to ensure the metadata is kept alive
3081 // This mirror may be different than the one in clazz field.
3082 mname->obj_field_put(_vmloader_offset, dependency);
3083 }
3084
3085 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3086 assert(is_instance(mname), "wrong type");
3087 return (intptr_t) mname->address_field(_vmindex_offset);
3088 }
3089
3090 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3091 assert(is_instance(mname), "wrong type");
3092 mname->address_field_put(_vmindex_offset, (address) index);
3093 }
3094
3095 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3096 assert(is_instance(lform), "wrong type");
3097 return lform->obj_field(_vmentry_offset);
3098 }
3099
3100
3101 // Support for java_lang_invoke_MethodType
3102
3103 int java_lang_invoke_MethodType::_rtype_offset;
3104 int java_lang_invoke_MethodType::_ptypes_offset;
3105
3106 void java_lang_invoke_MethodType::compute_offsets() {
3107 Klass* k = SystemDictionary::MethodType_klass();
3108 if (k != NULL) {
3109 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
3110 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
3111 }
3112 }
3113
3114 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3115 st->print("(");
3116 objArrayOop pts = ptypes(mt);
3117 for (int i = 0, limit = pts->length(); i < limit; i++) {
3118 java_lang_Class::print_signature(pts->obj_at(i), st);
3119 }
3120 st->print(")");
3121 java_lang_Class::print_signature(rtype(mt), st);
3122 }
3123
3124 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3125 ResourceMark rm;
3126 stringStream buffer(128);
3127 print_signature(mt, &buffer);
3128 const char* sigstr = buffer.base();
3129 int siglen = (int) buffer.size();
3130 Symbol *name;
3131 if (!intern_if_not_found) {
3132 name = SymbolTable::probe(sigstr, siglen);
3133 } else {
3134 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3135 }
3136 return name;
3137 }
3138
3139 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3140 if (mt1 == mt2)
3141 return true;
3142 if (rtype(mt1) != rtype(mt2))
3143 return false;
3144 if (ptype_count(mt1) != ptype_count(mt2))
3145 return false;
3146 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3147 if (ptype(mt1, i) != ptype(mt2, i))
3148 return false;
3149 }
3150 return true;
3151 }
3152
3153 oop java_lang_invoke_MethodType::rtype(oop mt) {
3154 assert(is_instance(mt), "must be a MethodType");
3155 return mt->obj_field(_rtype_offset);
3156 }
3157
3158 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3159 assert(is_instance(mt), "must be a MethodType");
3160 return (objArrayOop) mt->obj_field(_ptypes_offset);
3161 }
3162
3163 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3164 return ptypes(mt)->obj_at(idx);
3165 }
3166
3167 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3168 return ptypes(mt)->length();
3169 }
3170
3171 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3172 objArrayOop pts = ptypes(mt);
3173 int count = pts->length();
3174 int slots = 0;
3175 for (int i = 0; i < count; i++) {
3176 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3177 slots += type2size[bt];
3178 }
3179 return slots;
3180 }
3181
3182 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3183 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3184 return type2size[bt];
3185 }
3186
3187
3188 // Support for java_lang_invoke_CallSite
3189
3190 int java_lang_invoke_CallSite::_target_offset;
3191 int java_lang_invoke_CallSite::_context_offset;
3192
3193 void java_lang_invoke_CallSite::compute_offsets() {
3194 Klass* k = SystemDictionary::CallSite_klass();
3195 if (k != NULL) {
3196 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
3197 compute_offset(_context_offset, k, vmSymbols::context_name(),
3198 vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
3199 }
3200 }
3201
3202 oop java_lang_invoke_CallSite::context(oop call_site) {
3203 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3204
3205 oop dep_oop = call_site->obj_field(_context_offset);
3206 return dep_oop;
3207 }
3208
3209 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3210
3211 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3212
3213 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3214 Klass* k = SystemDictionary::Context_klass();
3215 if (k != NULL) {
3216 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3217 }
3218 }
3219
3220 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3221 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3222 intptr_t* vmdeps_addr = (intptr_t*)call_site->address_field_addr(_vmdependencies_offset);
3223 DependencyContext dep_ctx(vmdeps_addr);
3224 return dep_ctx;
3225 }
3226
3227 // Support for java_security_AccessControlContext
3228
3229 int java_security_AccessControlContext::_context_offset = 0;
3230 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3231 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3232 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3233
3234 void java_security_AccessControlContext::compute_offsets() {
3235 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3236 fieldDescriptor fd;
3237 InstanceKlass* ik = SystemDictionary::AccessControlContext_klass();
3238
3239 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
3240 fatal("Invalid layout of java.security.AccessControlContext");
3241 }
3242 _context_offset = fd.offset();
3243
3244 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
3245 fatal("Invalid layout of java.security.AccessControlContext");
3246 }
3247 _privilegedContext_offset = fd.offset();
3248
3249 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
3250 fatal("Invalid layout of java.security.AccessControlContext");
3251 }
3252 _isPrivileged_offset = fd.offset();
3253
3254 // The offset may not be present for bootstrapping with older JDK.
3255 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
3256 _isAuthorized_offset = fd.offset();
3257 }
3258 }
3259
3260
3261 bool java_security_AccessControlContext::is_authorized(Handle context) {
3262 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3263 assert(_isAuthorized_offset != -1, "should be set");
3264 return context->bool_field(_isAuthorized_offset) != 0;
3265 }
3266
3267 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3268 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3269 // Ensure klass is initialized
3270 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3271 // Allocate result
3272 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3273 // Fill in values
3274 result->obj_field_put(_context_offset, context());
3275 result->obj_field_put(_privilegedContext_offset, privileged_context());
3276 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3277 // whitelist AccessControlContexts created by the JVM if present
3278 if (_isAuthorized_offset != -1) {
3279 result->bool_field_put(_isAuthorized_offset, true);
3280 }
3281 return result;
3282 }
3283
3284
3285 // Support for java_lang_ClassLoader
3286
3287 bool java_lang_ClassLoader::offsets_computed = false;
3288 int java_lang_ClassLoader::_loader_data_offset = -1;
3289 int java_lang_ClassLoader::parallelCapable_offset = -1;
3290
3291 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
3292 assert(loader != NULL && loader->is_oop(), "loader must be oop");
3293 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
3294 }
3295
3296 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3297 return *java_lang_ClassLoader::loader_data_addr(loader);
3298 }
3299
3300 void java_lang_ClassLoader::compute_offsets() {
3301 assert(!offsets_computed, "offsets should be initialized only once");
3302 offsets_computed = true;
3303
3304 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
3305 Klass* k1 = SystemDictionary::ClassLoader_klass();
3306 compute_optional_offset(parallelCapable_offset,
3307 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
3308
3309 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3310 }
3311
3312 oop java_lang_ClassLoader::parent(oop loader) {
3313 assert(is_instance(loader), "loader must be oop");
3314 return loader->obj_field(parent_offset);
3315 }
3316
3317 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
3318 assert(is_instance(loader), "loader must be oop");
3319 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
3320 oop acl = loader;
3321 debug_only(jint loop_count = 0);
3322 // This loop taken verbatim from ClassLoader.java:
3323 do {
3324 acl = parent(acl);
3325 if (cl == acl) {
3326 return true;
3327 }
3328 assert(++loop_count > 0, "loop_count overflow");
3329 } while (acl != NULL);
3330 return false;
3331 }
3332
3333 bool java_lang_ClassLoader::is_instance(oop obj) {
3334 return obj != NULL && is_subclass(obj->klass());
3335 }
3336
3337
3338 // For class loader classes, parallelCapable defined
3339 // based on non-null field
3340 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
3341 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
3342 if (parallelCapable_offset == -1) {
3343 // Default for backward compatibility is false
3344 return false;
3345 }
3346 return (class_loader->obj_field(parallelCapable_offset) != NULL);
3347 }
3348
3349 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
3350 // Fix for 4474172; see evaluation for more details
3351 loader = non_reflection_class_loader(loader);
3352
3353 oop cl = SystemDictionary::java_system_loader();
3354 while(cl != NULL) {
3355 if (cl == loader) return true;
3356 cl = parent(cl);
3357 }
3358 return false;
3359 }
3360
3361 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
3362 if (loader != NULL) {
3363 // See whether this is one of the class loaders associated with
3364 // the generated bytecodes for reflection, and if so, "magically"
3365 // delegate to its parent to prevent class loading from occurring
3366 // in places where applications using reflection didn't expect it.
3367 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
3368 // This might be null in non-1.4 JDKs
3369 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
3370 return parent(loader);
3371 }
3372 }
3373 return loader;
3374 }
3375
3376
3377 // Support for java_lang_System
3378 int java_lang_System::in_offset_in_bytes() {
3379 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
3380 }
3381
3382
3383 int java_lang_System::out_offset_in_bytes() {
3384 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
3385 }
3386
3387
3388 int java_lang_System::err_offset_in_bytes() {
3389 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
3390 }
3391
3392
3393 bool java_lang_System::has_security_manager() {
3394 InstanceKlass* ik = SystemDictionary::System_klass();
3395 address addr = ik->static_field_addr(static_security_offset);
3396 if (UseCompressedOops) {
3397 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
3398 } else {
3399 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
3400 }
3401 }
3402
3403 int java_lang_Class::_klass_offset;
3404 int java_lang_Class::_array_klass_offset;
3405 int java_lang_Class::_oop_size_offset;
3406 int java_lang_Class::_static_oop_field_count_offset;
3407 int java_lang_Class::_class_loader_offset;
3408 int java_lang_Class::_protection_domain_offset;
3409 int java_lang_Class::_component_mirror_offset;
3410 int java_lang_Class::_init_lock_offset;
3411 int java_lang_Class::_signers_offset;
3412 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
3413 int java_lang_Throwable::backtrace_offset;
3414 int java_lang_Throwable::detailMessage_offset;
3415 int java_lang_Throwable::cause_offset;
3416 int java_lang_Throwable::stackTrace_offset;
3417 int java_lang_Throwable::static_unassigned_stacktrace_offset;
3418 int java_lang_reflect_AccessibleObject::override_offset;
3419 int java_lang_reflect_Method::clazz_offset;
3420 int java_lang_reflect_Method::name_offset;
3421 int java_lang_reflect_Method::returnType_offset;
3422 int java_lang_reflect_Method::parameterTypes_offset;
3423 int java_lang_reflect_Method::exceptionTypes_offset;
3424 int java_lang_reflect_Method::slot_offset;
3425 int java_lang_reflect_Method::modifiers_offset;
3426 int java_lang_reflect_Method::signature_offset;
3427 int java_lang_reflect_Method::annotations_offset;
3428 int java_lang_reflect_Method::parameter_annotations_offset;
3429 int java_lang_reflect_Method::annotation_default_offset;
3430 int java_lang_reflect_Method::type_annotations_offset;
3431 int java_lang_reflect_Constructor::clazz_offset;
3432 int java_lang_reflect_Constructor::parameterTypes_offset;
3433 int java_lang_reflect_Constructor::exceptionTypes_offset;
3434 int java_lang_reflect_Constructor::slot_offset;
3435 int java_lang_reflect_Constructor::modifiers_offset;
3436 int java_lang_reflect_Constructor::signature_offset;
3437 int java_lang_reflect_Constructor::annotations_offset;
3438 int java_lang_reflect_Constructor::parameter_annotations_offset;
3439 int java_lang_reflect_Constructor::type_annotations_offset;
3440 int java_lang_reflect_Field::clazz_offset;
3441 int java_lang_reflect_Field::name_offset;
3442 int java_lang_reflect_Field::type_offset;
3443 int java_lang_reflect_Field::slot_offset;
3444 int java_lang_reflect_Field::modifiers_offset;
3445 int java_lang_reflect_Field::signature_offset;
3446 int java_lang_reflect_Field::annotations_offset;
3447 int java_lang_reflect_Field::type_annotations_offset;
3448 int java_lang_reflect_Parameter::name_offset;
3449 int java_lang_reflect_Parameter::modifiers_offset;
3450 int java_lang_reflect_Parameter::index_offset;
3451 int java_lang_reflect_Parameter::executable_offset;
3452 int java_lang_boxing_object::value_offset;
3453 int java_lang_boxing_object::long_value_offset;
3454 int java_lang_ref_Reference::referent_offset;
3455 int java_lang_ref_Reference::queue_offset;
3456 int java_lang_ref_Reference::next_offset;
3457 int java_lang_ref_Reference::discovered_offset;
3458 int java_lang_ref_Reference::static_lock_offset;
3459 int java_lang_ref_Reference::static_pending_offset;
3460 int java_lang_ref_Reference::number_of_fake_oop_fields;
3461 int java_lang_ref_SoftReference::timestamp_offset;
3462 int java_lang_ref_SoftReference::static_clock_offset;
3463 int java_lang_ClassLoader::parent_offset;
3464 int java_lang_System::static_in_offset;
3465 int java_lang_System::static_out_offset;
3466 int java_lang_System::static_err_offset;
3467 int java_lang_System::static_security_offset;
3468 int java_lang_StackTraceElement::declaringClass_offset;
3469 int java_lang_StackTraceElement::methodName_offset;
3470 int java_lang_StackTraceElement::fileName_offset;
3471 int java_lang_StackTraceElement::lineNumber_offset;
3472 int java_lang_AssertionStatusDirectives::classes_offset;
3473 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3474 int java_lang_AssertionStatusDirectives::packages_offset;
3475 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3476 int java_lang_AssertionStatusDirectives::deflt_offset;
3477 int java_nio_Buffer::_limit_offset;
3478 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3479 int sun_reflect_ConstantPool::_oop_offset;
3480 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3481
3482
3483 // Support for java_lang_StackTraceElement
3484
3485 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3486 element->obj_field_put(fileName_offset, value);
3487 }
3488
3489 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3490 element->obj_field_put(declaringClass_offset, value);
3491 }
3492
3493 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3494 element->obj_field_put(methodName_offset, value);
3495 }
3496
3497 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3498 element->int_field_put(lineNumber_offset, value);
3499 }
3500
3501
3502 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3503
3504 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3505 o->obj_field_put(classes_offset, val);
3506 }
3507
3508 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3509 o->obj_field_put(classEnabled_offset, val);
3510 }
3511
3512 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3513 o->obj_field_put(packages_offset, val);
3514 }
3515
3516 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3517 o->obj_field_put(packageEnabled_offset, val);
3518 }
3519
3520 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3521 o->bool_field_put(deflt_offset, val);
3522 }
3523
3524
3525 // Support for intrinsification of java.nio.Buffer.checkIndex
3526 int java_nio_Buffer::limit_offset() {
3527 return _limit_offset;
3528 }
3529
3530
3531 void java_nio_Buffer::compute_offsets() {
3532 Klass* k = SystemDictionary::nio_Buffer_klass();
3533 assert(k != NULL, "must be loaded in 1.4+");
3534 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3535 }
3536
3537 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3538 if (_owner_offset != 0) return;
3539
3540 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3541 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3542 compute_offset(_owner_offset, k,
3543 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3544 }
3545
3546 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3547 assert(_owner_offset != 0, "Must be initialized");
3548 return obj->obj_field(_owner_offset);
3549 }
3550
3551 // Compute hard-coded offsets
3552 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3553 // are not available to determine the offset_of_static_fields.
3554 void JavaClasses::compute_hard_coded_offsets() {
3555 const int x = heapOopSize;
3556 const int header = instanceOopDesc::base_offset_in_bytes();
3557
3558 // Throwable Class
3559 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3560 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3561 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header;
3562 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3563 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3564
3565 // java_lang_boxing_object
3566 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3567 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3568
3569 // java_lang_ref_Reference:
3570 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3571 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3572 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3573 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3574 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3575 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3576 // Artificial fields for java_lang_ref_Reference
3577 // The first field is for the discovered field added in 1.4
3578 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3579
3580 // java_lang_ref_SoftReference Class
3581 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3582 // Don't multiply static fields because they are always in wordSize units
3583 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3584
3585 // java_lang_ClassLoader
3586 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3587
3588 // java_lang_System
3589 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3590 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3591 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3592 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3593
3594 // java_lang_StackTraceElement
3595 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3596 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3597 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3598 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3599 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3600 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3601 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3602 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3603 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3604
3605 }
3606
3607
3608 // Compute non-hard-coded field offsets of all the classes in this file
3609 void JavaClasses::compute_offsets() {
3610 // java_lang_Class::compute_offsets was called earlier in bootstrap
3611 java_lang_ClassLoader::compute_offsets();
3612 java_lang_Thread::compute_offsets();
3613 java_lang_ThreadGroup::compute_offsets();
3614 java_lang_invoke_MethodHandle::compute_offsets();
3615 java_lang_invoke_DirectMethodHandle::compute_offsets();
3616 java_lang_invoke_MemberName::compute_offsets();
3617 java_lang_invoke_LambdaForm::compute_offsets();
3618 java_lang_invoke_MethodType::compute_offsets();
3619 java_lang_invoke_CallSite::compute_offsets();
3620 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
3621 java_security_AccessControlContext::compute_offsets();
3622 // Initialize reflection classes. The layouts of these classes
3623 // changed with the new reflection implementation in JDK 1.4, and
3624 // since the Universe doesn't know what JDK version it is until this
3625 // point we defer computation of these offsets until now.
3626 java_lang_reflect_AccessibleObject::compute_offsets();
3627 java_lang_reflect_Method::compute_offsets();
3628 java_lang_reflect_Constructor::compute_offsets();
3629 java_lang_reflect_Field::compute_offsets();
3630 java_nio_Buffer::compute_offsets();
3631 sun_reflect_ConstantPool::compute_offsets();
3632 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3633 java_lang_reflect_Parameter::compute_offsets();
3634
3635 // generated interpreter code wants to know about the offsets we just computed:
3636 AbstractAssembler::update_delayed_values();
3637 }
3638
3639 #ifndef PRODUCT
3640
3641 // These functions exist to assert the validity of hard-coded field offsets to guard
3642 // against changes in the class files
3643
3644 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3645 EXCEPTION_MARK;
3646 fieldDescriptor fd;
3647 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3648 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3649 instanceKlassHandle h_klass (THREAD, k);
3650 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3651 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3652 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3653 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3654 return false;
3655 }
3656 if (fd.is_static()) {
3657 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3658 return false;
3659 }
3660 if (fd.offset() == hardcoded_offset ) {
3661 return true;
3662 } else {
3663 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3664 klass_name, field_name, hardcoded_offset, fd.offset());
3665 return false;
3666 }
3667 }
3668
3669
3670 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3671 EXCEPTION_MARK;
3672 fieldDescriptor fd;
3673 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3674 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3675 instanceKlassHandle h_klass (THREAD, k);
3676 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3677 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3678 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3679 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3680 return false;
3681 }
3682 if (!fd.is_static()) {
3683 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3684 return false;
3685 }
3686 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3687 return true;
3688 } else {
3689 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());
3690 return false;
3691 }
3692 }
3693
3694
3695 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3696 EXCEPTION_MARK;
3697 fieldDescriptor fd;
3698 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3699 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3700 instanceKlassHandle h_klass (THREAD, k);
3701 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3702 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3703 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3704 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3705 return false;
3706 }
3707 if (!fd.is_static() || !fd.has_initial_value()) {
3708 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3709 return false;
3710 }
3711 if (!fd.initial_value_tag().is_int()) {
3712 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3713 return false;
3714 }
3715 jint field_value = fd.int_initial_value();
3716 if (field_value == hardcoded_constant) {
3717 return true;
3718 } else {
3719 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);
3720 return false;
3721 }
3722 }
3723
3724
3725 // Check the hard-coded field offsets of all the classes in this file
3726
3727 void JavaClasses::check_offsets() {
3728 bool valid = true;
3729 HandleMark hm;
3730
3731 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3732 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3733
3734 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3735 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3736
3737 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3738 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3739
3740 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3741 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3742
3743 // java.lang.String
3744
3745 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[B");
3746 if (java_lang_String::has_hash_field()) {
3747 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3748 }
3749 if (java_lang_String::has_coder_field()) {
3750 CHECK_OFFSET("java/lang/String", java_lang_String, coder, "B");
3751 }
3752
3753 // java.lang.Class
3754
3755 // Fake fields
3756 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3757 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3758
3759 // java.lang.Throwable
3760
3761 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3762 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3763 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;");
3764 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3765
3766 // Boxed primitive objects (java_lang_boxing_object)
3767
3768 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3769 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3770 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3771 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3772 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3773 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3774 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3775 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3776
3777 // java.lang.ClassLoader
3778
3779 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3780
3781 // java.lang.System
3782
3783 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3784 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3785 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3786 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
3787
3788 // java.lang.StackTraceElement
3789
3790 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
3791 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
3792 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
3793 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
3794
3795 // java.lang.ref.Reference
3796
3797 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
3798 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
3799 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
3800 // Fake field
3801 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
3802 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
3803 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
3804
3805 // java.lang.ref.SoftReference
3806
3807 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
3808 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
3809
3810 // java.lang.AssertionStatusDirectives
3811 //
3812 // The CheckAssertionStatusDirectives boolean can be removed from here and
3813 // globals.hpp after the AssertionStatusDirectives class has been integrated
3814 // into merlin "for some time." Without it, the vm will fail with early
3815 // merlin builds.
3816
3817 if (CheckAssertionStatusDirectives) {
3818 const char* nm = "java/lang/AssertionStatusDirectives";
3819 const char* sig = "[Ljava/lang/String;";
3820 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
3821 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
3822 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
3823 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
3824 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
3825 }
3826
3827 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
3828 }
3829
3830 #endif // PRODUCT
3831
3832 int InjectedField::compute_offset() {
3833 InstanceKlass* ik = InstanceKlass::cast(klass());
3834 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
3835 if (!may_be_java && !fs.access_flags().is_internal()) {
3836 // Only look at injected fields
3837 continue;
3838 }
3839 if (fs.name() == name() && fs.signature() == signature()) {
3840 return fs.offset();
3841 }
3842 }
3843 ResourceMark rm;
3844 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)" : "");
3845 #ifndef PRODUCT
3846 ik->print();
3847 tty->print_cr("all fields:");
3848 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
3849 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
3850 }
3851 #endif //PRODUCT
3852 vm_exit_during_initialization("Invalid layout of preloaded class: use -XX:+TraceClassLoading to see the origin of the problem class");
3853 return -1;
3854 }
3855
3856 void javaClasses_init() {
3857 JavaClasses::compute_offsets();
3858 JavaClasses::check_offsets();
3859 FilteredFieldsMap::initialize(); // must be done after computing offsets.
3860 }