1 /*
2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/altHashing.hpp"
27 #include "classfile/classLoaderData.inline.hpp"
28 #include "classfile/javaClasses.inline.hpp"
29 #include "classfile/moduleEntry.hpp"
30 #include "classfile/stringTable.hpp"
31 #include "classfile/vmSymbols.hpp"
32 #include "code/debugInfo.hpp"
33 #include "code/dependencyContext.hpp"
34 #include "code/pcDesc.hpp"
35 #include "interpreter/interpreter.hpp"
36 #include "memory/oopFactory.hpp"
37 #include "memory/resourceArea.hpp"
38 #include "memory/universe.inline.hpp"
39 #include "oops/fieldStreams.hpp"
40 #include "oops/instanceKlass.hpp"
41 #include "oops/instanceMirrorKlass.hpp"
42 #include "oops/klass.hpp"
43 #include "oops/method.hpp"
44 #include "oops/objArrayOop.inline.hpp"
45 #include "oops/oop.inline.hpp"
46 #include "oops/symbol.hpp"
47 #include "oops/typeArrayOop.hpp"
48 #include "runtime/fieldDescriptor.hpp"
49 #include "runtime/handles.inline.hpp"
50 #include "runtime/interfaceSupport.hpp"
51 #include "runtime/java.hpp"
52 #include "runtime/javaCalls.hpp"
53 #include "runtime/safepoint.hpp"
54 #include "runtime/thread.inline.hpp"
55 #include "runtime/vframe.hpp"
56 #include "utilities/preserveException.hpp"
57
58 #if INCLUDE_JVMCI
59 #include "jvmci/jvmciJavaClasses.hpp"
60 #endif
61
62 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
63 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
64
65 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
66 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
67
68 InjectedField JavaClasses::_injected_fields[] = {
69 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
70 };
71
72 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
73 return _injected_fields[id].compute_offset();
74 }
75
76
77 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
78 *field_count = 0;
79
80 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
81 if (sid == vmSymbols::NO_SID) {
82 // Only well known classes can inject fields
83 return NULL;
84 }
85
86 int count = 0;
87 int start = -1;
88
89 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
90 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
91 count++; \
92 if (start == -1) start = klass##_##name##_enum; \
93 }
94 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
95 #undef LOOKUP_INJECTED_FIELD
96
97 if (start != -1) {
98 *field_count = count;
99 return _injected_fields + start;
100 }
101 return NULL;
102 }
103
104
105 static bool find_field(InstanceKlass* ik,
106 Symbol* name_symbol, Symbol* signature_symbol,
107 fieldDescriptor* fd,
108 bool is_static = false, bool allow_super = false) {
109 if (allow_super || is_static) {
110 return ik->find_field(name_symbol, signature_symbol, is_static, fd) != NULL;
111 } else {
112 return ik->find_local_field(name_symbol, signature_symbol, fd);
113 }
114 }
115
116 // Helpful routine for computing field offsets at run time rather than hardcoding them
117 static void
118 compute_offset(int &dest_offset,
119 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
120 bool is_static = false, bool allow_super = false) {
121 fieldDescriptor fd;
122 InstanceKlass* ik = InstanceKlass::cast(klass);
123 if (!find_field(ik, name_symbol, signature_symbol, &fd, is_static, allow_super)) {
124 ResourceMark rm;
125 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
126 #ifndef PRODUCT
127 ik->print();
128 tty->print_cr("all fields:");
129 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
130 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
131 }
132 #endif //PRODUCT
133 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
134 }
135 dest_offset = fd.offset();
136 }
137
138 // Same as above but for "optional" offsets that might not be present in certain JDK versions
139 static void
140 compute_optional_offset(int& dest_offset,
141 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
142 bool allow_super = false) {
143 fieldDescriptor fd;
144 InstanceKlass* ik = InstanceKlass::cast(klass);
145 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
146 dest_offset = fd.offset();
147 }
148 }
149
150
151 int java_lang_String::value_offset = 0;
152 int java_lang_String::hash_offset = 0;
153 int java_lang_String::coder_offset = 0;
154
155 bool java_lang_String::initialized = false;
156
157 bool java_lang_String::is_instance(oop obj) {
158 return is_instance_inlined(obj);
159 }
160
161 void java_lang_String::compute_offsets() {
162 assert(!initialized, "offsets should be initialized only once");
163
164 Klass* k = SystemDictionary::String_klass();
165 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::byte_array_signature());
166 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
167 compute_optional_offset(coder_offset, k, vmSymbols::coder_name(), vmSymbols::byte_signature());
168
169 initialized = true;
170 }
171
172 class CompactStringsFixup : public FieldClosure {
173 private:
174 bool _value;
175
176 public:
177 CompactStringsFixup(bool value) : _value(value) {}
178
179 void do_field(fieldDescriptor* fd) {
180 if (fd->name() == vmSymbols::compact_strings_name()) {
181 oop mirror = fd->field_holder()->java_mirror();
182 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
183 assert(mirror != NULL, "String must have mirror already");
184 mirror->bool_field_put(fd->offset(), _value);
185 }
186 }
187 };
188
189 void java_lang_String::set_compact_strings(bool value) {
190 CompactStringsFixup fix(value);
191 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
192 }
193
194 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
195 assert(initialized, "Must be initialized");
196 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
197
198 // Create the String object first, so there's a chance that the String
199 // and the char array it points to end up in the same cache line.
200 oop obj;
201 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
202
203 // Create the char array. The String object must be handlized here
204 // because GC can happen as a result of the allocation attempt.
205 Handle h_obj(THREAD, obj);
206 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
207 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
208
209 // Point the String at the char array
210 obj = h_obj();
211 set_value(obj, buffer);
212 // No need to zero the offset, allocation zero'ed the entire String object
213 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
214 return h_obj;
215 }
216
217 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
218 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
219 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
220 typeArrayOop buffer = value(h_obj());
221 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
222 if (is_latin1) {
223 for (int index = 0; index < length; index++) {
224 buffer->byte_at_put(index, (jbyte)unicode[index]);
225 }
226 } else {
227 for (int index = 0; index < length; index++) {
228 buffer->char_at_put(index, unicode[index]);
229 }
230 }
231
232 #ifdef ASSERT
233 {
234 ResourceMark rm;
235 char* expected = UNICODE::as_utf8(unicode, length);
236 char* actual = as_utf8_string(h_obj());
237 if (strcmp(expected, actual) != 0) {
238 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
239 ShouldNotReachHere();
240 }
241 }
242 #endif
243
244 return h_obj;
245 }
246
247 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
248 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
249 return h_obj();
250 }
251
252 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
253 if (utf8_str == NULL) {
254 return Handle();
255 }
256 bool has_multibyte, is_latin1;
257 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
258 if (!CompactStrings) {
259 has_multibyte = true;
260 is_latin1 = false;
261 }
262
263 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
264 if (length > 0) {
265 if (!has_multibyte) {
266 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
267 } else if (is_latin1) {
268 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
269 } else {
270 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
271 }
272 }
273
274 #ifdef ASSERT
275 // This check is too strict because the input string is not necessarily valid UTF8.
276 // For example, it may be created with arbitrary content via jni_NewStringUTF.
277 /*
278 {
279 ResourceMark rm;
280 const char* expected = utf8_str;
281 char* actual = as_utf8_string(h_obj());
282 if (strcmp(expected, actual) != 0) {
283 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
284 ShouldNotReachHere();
285 }
286 }
287 */
288 #endif
289
290 return h_obj;
291 }
292
293 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
294 Handle h_obj = create_from_str(utf8_str, CHECK_0);
295 return h_obj();
296 }
297
298 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
299 const char* utf8_str = (char*)symbol->bytes();
300 int utf8_len = symbol->utf8_length();
301
302 bool has_multibyte, is_latin1;
303 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
304 if (!CompactStrings) {
305 has_multibyte = true;
306 is_latin1 = false;
307 }
308
309 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
310 if (length > 0) {
311 if (!has_multibyte) {
312 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
313 } else if (is_latin1) {
314 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
315 } else {
316 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
317 }
318 }
319
320 #ifdef ASSERT
321 {
322 ResourceMark rm;
323 const char* expected = symbol->as_utf8();
324 char* actual = as_utf8_string(h_obj());
325 if (strncmp(expected, actual, utf8_len) != 0) {
326 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
327 ShouldNotReachHere();
328 }
329 }
330 #endif
331
332 return h_obj;
333 }
334
335 // Converts a C string to a Java String based on current encoding
336 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
337 assert(str != NULL, "bad arguments");
338
339 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
340 static to_java_string_fn_t _to_java_string_fn = NULL;
341
342 if (_to_java_string_fn == NULL) {
343 void *lib_handle = os::native_java_library();
344 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
345 if (_to_java_string_fn == NULL) {
346 fatal("NewStringPlatform missing");
347 }
348 }
349
350 jstring js = NULL;
351 { JavaThread* thread = (JavaThread*)THREAD;
352 assert(thread->is_Java_thread(), "must be java thread");
353 HandleMark hm(thread);
354 ThreadToNativeFromVM ttn(thread);
355 js = (_to_java_string_fn)(thread->jni_environment(), str);
356 }
357 return Handle(THREAD, JNIHandles::resolve(js));
358 }
359
360 // Converts a Java String to a native C string that can be used for
361 // native OS calls.
362 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
363 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
364 static to_platform_string_fn_t _to_platform_string_fn = NULL;
365
366 if (_to_platform_string_fn == NULL) {
367 void *lib_handle = os::native_java_library();
368 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
369 if (_to_platform_string_fn == NULL) {
370 fatal("GetStringPlatformChars missing");
371 }
372 }
373
374 char *native_platform_string;
375 { JavaThread* thread = (JavaThread*)THREAD;
376 assert(thread->is_Java_thread(), "must be java thread");
377 JNIEnv *env = thread->jni_environment();
378 jstring js = (jstring) JNIHandles::make_local(env, java_string());
379 bool is_copy;
380 HandleMark hm(thread);
381 ThreadToNativeFromVM ttn(thread);
382 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
383 assert(is_copy == JNI_TRUE, "is_copy value changed");
384 JNIHandles::destroy_local(js);
385 }
386 return native_platform_string;
387 }
388
389 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
390 oop obj = java_string();
391 // Typical usage is to convert all '/' to '.' in string.
392 typeArrayOop value = java_lang_String::value(obj);
393 int length = java_lang_String::length(obj);
394 bool is_latin1 = java_lang_String::is_latin1(obj);
395
396 // First check if any from_char exist
397 int index; // Declared outside, used later
398 for (index = 0; index < length; index++) {
399 jchar c = !is_latin1 ? value->char_at(index) :
400 ((jchar) value->byte_at(index)) & 0xff;
401 if (c == from_char) {
402 break;
403 }
404 }
405 if (index == length) {
406 // No from_char, so do not copy.
407 return java_string;
408 }
409
410 // Check if result string will be latin1
411 bool to_is_latin1 = false;
412
413 // Replacement char must be latin1
414 if (CompactStrings && UNICODE::is_latin1(to_char)) {
415 if (is_latin1) {
416 // Source string is latin1 as well
417 to_is_latin1 = true;
418 } else if (!UNICODE::is_latin1(from_char)) {
419 // We are replacing an UTF16 char. Scan string to
420 // check if result can be latin1 encoded.
421 to_is_latin1 = true;
422 for (index = 0; index < length; index++) {
423 jchar c = value->char_at(index);
424 if (c != from_char && !UNICODE::is_latin1(c)) {
425 to_is_latin1 = false;
426 break;
427 }
428 }
429 }
430 }
431
432 // Create new UNICODE (or byte) buffer. Must handlize value because GC
433 // may happen during String and char array creation.
434 typeArrayHandle h_value(THREAD, value);
435 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
436 typeArrayOop from_buffer = h_value();
437 typeArrayOop to_buffer = java_lang_String::value(string());
438
439 // Copy contents
440 for (index = 0; index < length; index++) {
441 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
442 ((jchar) from_buffer->byte_at(index)) & 0xff;
443 if (c == from_char) {
444 c = to_char;
445 }
446 if (!to_is_latin1) {
447 to_buffer->char_at_put(index, c);
448 } else {
449 to_buffer->byte_at_put(index, (jbyte) c);
450 }
451 }
452 return string;
453 }
454
455 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
456 typeArrayOop value = java_lang_String::value(java_string);
457 length = java_lang_String::length(java_string);
458 bool is_latin1 = java_lang_String::is_latin1(java_string);
459
460 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
461 if (result != NULL) {
462 if (!is_latin1) {
463 for (int index = 0; index < length; index++) {
464 result[index] = value->char_at(index);
465 }
466 } else {
467 for (int index = 0; index < length; index++) {
468 result[index] = ((jchar) value->byte_at(index)) & 0xff;
469 }
470 }
471 } else {
472 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
473 }
474 return result;
475 }
476
477 unsigned int java_lang_String::hash_code(oop java_string) {
478 int length = java_lang_String::length(java_string);
479 // Zero length string will hash to zero with String.hashCode() function.
480 if (length == 0) return 0;
481
482 typeArrayOop value = java_lang_String::value(java_string);
483 bool is_latin1 = java_lang_String::is_latin1(java_string);
484
485 if (is_latin1) {
486 return java_lang_String::hash_code(value->byte_at_addr(0), length);
487 } else {
488 return java_lang_String::hash_code(value->char_at_addr(0), length);
489 }
490 }
491
492 char* java_lang_String::as_quoted_ascii(oop java_string) {
493 typeArrayOop value = java_lang_String::value(java_string);
494 int length = java_lang_String::length(java_string);
495 bool is_latin1 = java_lang_String::is_latin1(java_string);
496
497 if (length == 0) return NULL;
498
499 char* result;
500 int result_length;
501 if (!is_latin1) {
502 jchar* base = value->char_at_addr(0);
503 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
504 result = NEW_RESOURCE_ARRAY(char, result_length);
505 UNICODE::as_quoted_ascii(base, length, result, result_length);
506 } else {
507 jbyte* base = value->byte_at_addr(0);
508 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
509 result = NEW_RESOURCE_ARRAY(char, result_length);
510 UNICODE::as_quoted_ascii(base, length, result, result_length);
511 }
512 assert(result_length >= length + 1, "must not be shorter");
513 assert(result_length == (int)strlen(result) + 1, "must match");
514 return result;
515 }
516
517 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
518 oop obj = java_string();
519 typeArrayOop value = java_lang_String::value(obj);
520 int length = java_lang_String::length(obj);
521 bool is_latin1 = java_lang_String::is_latin1(obj);
522 if (!is_latin1) {
523 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
524 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
525 return sym;
526 } else {
527 ResourceMark rm;
528 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
529 const char* base = UNICODE::as_utf8(position, length);
530 Symbol* sym = SymbolTable::lookup(base, length, THREAD);
531 return sym;
532 }
533 }
534
535 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
536 typeArrayOop value = java_lang_String::value(java_string);
537 int length = java_lang_String::length(java_string);
538 bool is_latin1 = java_lang_String::is_latin1(java_string);
539 if (!is_latin1) {
540 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
541 return SymbolTable::probe_unicode(base, length);
542 } else {
543 ResourceMark rm;
544 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
545 const char* base = UNICODE::as_utf8(position, length);
546 return SymbolTable::probe(base, length);
547 }
548 }
549
550 int java_lang_String::utf8_length(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 (length == 0) {
555 return 0;
556 }
557 if (!is_latin1) {
558 return UNICODE::utf8_length(value->char_at_addr(0), length);
559 } else {
560 return UNICODE::utf8_length(value->byte_at_addr(0), length);
561 }
562 }
563
564 char* java_lang_String::as_utf8_string(oop java_string) {
565 typeArrayOop value = java_lang_String::value(java_string);
566 int length = java_lang_String::length(java_string);
567 bool is_latin1 = java_lang_String::is_latin1(java_string);
568 if (!is_latin1) {
569 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
570 return UNICODE::as_utf8(position, length);
571 } else {
572 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
573 return UNICODE::as_utf8(position, length);
574 }
575 }
576
577 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
578 typeArrayOop value = java_lang_String::value(java_string);
579 int length = java_lang_String::length(java_string);
580 bool is_latin1 = java_lang_String::is_latin1(java_string);
581 if (!is_latin1) {
582 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
583 return UNICODE::as_utf8(position, length, buf, buflen);
584 } else {
585 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
586 return UNICODE::as_utf8(position, length, buf, buflen);
587 }
588 }
589
590 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
591 typeArrayOop value = java_lang_String::value(java_string);
592 int length = java_lang_String::length(java_string);
593 assert(start + len <= length, "just checking");
594 bool is_latin1 = java_lang_String::is_latin1(java_string);
595 if (!is_latin1) {
596 jchar* position = value->char_at_addr(start);
597 return UNICODE::as_utf8(position, len);
598 } else {
599 jbyte* position = value->byte_at_addr(start);
600 return UNICODE::as_utf8(position, len);
601 }
602 }
603
604 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
605 typeArrayOop value = java_lang_String::value(java_string);
606 int length = java_lang_String::length(java_string);
607 assert(start + len <= length, "just checking");
608 bool is_latin1 = java_lang_String::is_latin1(java_string);
609 if (!is_latin1) {
610 jchar* position = value->char_at_addr(start);
611 return UNICODE::as_utf8(position, len, buf, buflen);
612 } else {
613 jbyte* position = value->byte_at_addr(start);
614 return UNICODE::as_utf8(position, len, buf, buflen);
615 }
616 }
617
618 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
619 assert(java_string->klass() == SystemDictionary::String_klass(),
620 "must be java_string");
621 typeArrayOop value = java_lang_String::value(java_string);
622 int length = java_lang_String::length(java_string);
623 if (length != len) {
624 return false;
625 }
626 bool is_latin1 = java_lang_String::is_latin1(java_string);
627 if (!is_latin1) {
628 for (int i = 0; i < len; i++) {
629 if (value->char_at(i) != chars[i]) {
630 return false;
631 }
632 }
633 } else {
634 for (int i = 0; i < len; i++) {
635 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
636 return false;
637 }
638 }
639 }
640 return true;
641 }
642
643 bool java_lang_String::equals(oop str1, oop str2) {
644 assert(str1->klass() == SystemDictionary::String_klass(),
645 "must be java String");
646 assert(str2->klass() == SystemDictionary::String_klass(),
647 "must be java String");
648 typeArrayOop value1 = java_lang_String::value(str1);
649 int length1 = java_lang_String::length(str1);
650 bool is_latin1 = java_lang_String::is_latin1(str1);
651 typeArrayOop value2 = java_lang_String::value(str2);
652 int length2 = java_lang_String::length(str2);
653 bool is_latin2 = java_lang_String::is_latin1(str2);
654
655 if ((length1 != length2) || (is_latin1 != is_latin2)) {
656 // Strings of different size or with different
657 // coders are never equal.
658 return false;
659 }
660 int blength1 = value1->length();
661 for (int i = 0; i < value1->length(); i++) {
662 if (value1->byte_at(i) != value2->byte_at(i)) {
663 return false;
664 }
665 }
666 return true;
667 }
668
669 void java_lang_String::print(oop java_string, outputStream* st) {
670 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
671 typeArrayOop value = java_lang_String::value(java_string);
672
673 if (value == NULL) {
674 // This can happen if, e.g., printing a String
675 // object before its initializer has been called
676 st->print("NULL");
677 return;
678 }
679
680 int length = java_lang_String::length(java_string);
681 bool is_latin1 = java_lang_String::is_latin1(java_string);
682
683 st->print("\"");
684 for (int index = 0; index < length; index++) {
685 st->print("%c", (!is_latin1) ? value->char_at(index) :
686 ((jchar) value->byte_at(index)) & 0xff );
687 }
688 st->print("\"");
689 }
690
691
692 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
693 assert(mirror.not_null() && fd->is_static(), "just checking");
694 if (fd->has_initial_value()) {
695 BasicType t = fd->field_type();
696 switch (t) {
697 case T_BYTE:
698 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
699 break;
700 case T_BOOLEAN:
701 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
702 break;
703 case T_CHAR:
704 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
705 break;
706 case T_SHORT:
707 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
708 break;
709 case T_INT:
710 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
711 break;
712 case T_FLOAT:
713 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
714 break;
715 case T_DOUBLE:
716 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
717 break;
718 case T_LONG:
719 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
720 break;
721 case T_OBJECT:
722 {
723 #ifdef ASSERT
724 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
725 assert(fd->signature() == sym, "just checking");
726 #endif
727 oop string = fd->string_initial_value(CHECK);
728 mirror()->obj_field_put(fd->offset(), string);
729 }
730 break;
731 default:
732 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
733 "Illegal ConstantValue attribute in class file");
734 }
735 }
736 }
737
738
739 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
740 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
741
742 // If the offset was read from the shared archive, it was fixed up already
743 if (!k->is_shared()) {
744 if (k->is_instance_klass()) {
745 // During bootstrap, java.lang.Class wasn't loaded so static field
746 // offsets were computed without the size added it. Go back and
747 // update all the static field offsets to included the size.
748 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
749 if (fs.access_flags().is_static()) {
750 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
751 fs.set_offset(real_offset);
752 }
753 }
754 }
755 }
756 create_mirror(k, Handle(NULL), Handle(NULL), Handle(NULL), CHECK);
757 }
758
759 void java_lang_Class::initialize_mirror_fields(KlassHandle k,
760 Handle mirror,
761 Handle protection_domain,
762 TRAPS) {
763 // Allocate a simple java object for a lock.
764 // This needs to be a java object because during class initialization
765 // it can be held across a java call.
766 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
767 set_init_lock(mirror(), r);
768
769 // Set protection domain also
770 set_protection_domain(mirror(), protection_domain());
771
772 // Initialize static fields
773 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, mirror, CHECK);
774 }
775
776 void java_lang_Class::create_mirror(KlassHandle k, Handle class_loader,
777 Handle module, Handle protection_domain, TRAPS) {
778 assert(k->java_mirror() == NULL, "should only assign mirror once");
779 // Use this moment of initialization to cache modifier_flags also,
780 // to support Class.getModifiers(). Instance classes recalculate
781 // the cached flags after the class file is parsed, but before the
782 // class is put into the system dictionary.
783 int computed_modifiers = k->compute_modifier_flags(CHECK);
784 k->set_modifier_flags(computed_modifiers);
785 // Class_klass has to be loaded because it is used to allocate
786 // the mirror.
787 if (SystemDictionary::Class_klass_loaded()) {
788 // Allocate mirror (java.lang.Class instance)
789 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
790
791 // Setup indirection from mirror->klass
792 if (!k.is_null()) {
793 java_lang_Class::set_klass(mirror(), k());
794 }
795
796 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
797 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
798
799 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
800
801 // It might also have a component mirror. This mirror must already exist.
802 if (k->is_array_klass()) {
803 Handle comp_mirror;
804 if (k->is_typeArray_klass()) {
805 BasicType type = TypeArrayKlass::cast(k())->element_type();
806 comp_mirror = Universe::java_mirror(type);
807 } else {
808 assert(k->is_objArray_klass(), "Must be");
809 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
810 assert(element_klass != NULL, "Must have an element klass");
811 comp_mirror = element_klass->java_mirror();
812 }
813 assert(comp_mirror.not_null(), "must have a mirror");
814
815 // Two-way link between the array klass and its component mirror:
816 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
817 set_component_mirror(mirror(), comp_mirror());
818 set_array_klass(comp_mirror(), k());
819 } else {
820 assert(k->is_instance_klass(), "Must be");
821
822 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
823 if (HAS_PENDING_EXCEPTION) {
824 // If any of the fields throws an exception like OOM remove the klass field
825 // from the mirror so GC doesn't follow it after the klass has been deallocated.
826 // This mirror looks like a primitive type, which logically it is because it
827 // it represents no class.
828 java_lang_Class::set_klass(mirror(), NULL);
829 return;
830 }
831 }
832
833 // set the classLoader field in the java_lang_Class instance
834 assert(class_loader() == k->class_loader(), "should be same");
835 set_class_loader(mirror(), class_loader());
836
837 // set the module field in the java_lang_Class instance
838 // This may be null during bootstrap but will get fixed up later on.
839 set_module(mirror(), module());
840
841 // Setup indirection from klass->mirror last
842 // after any exceptions can happen during allocations.
843 if (!k.is_null()) {
844 k->set_java_mirror(mirror());
845 }
846
847 // Keep list of classes needing java.base module fixup.
848 if (!ModuleEntryTable::javabase_defined()) {
849 if (fixup_module_field_list() == NULL) {
850 GrowableArray<Klass*>* list =
851 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
852 set_fixup_module_field_list(list);
853 }
854 k->class_loader_data()->inc_keep_alive();
855 fixup_module_field_list()->push(k());
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 void java_lang_Class::fixup_module_field(KlassHandle k, Handle module) {
868 assert(_module_offset != 0, "must have been computed already");
869 java_lang_Class::set_module(k->java_mirror(), module());
870 }
871
872 int java_lang_Class::oop_size(oop java_class) {
873 assert(_oop_size_offset != 0, "must be set");
874 return java_class->int_field(_oop_size_offset);
875 }
876 void java_lang_Class::set_oop_size(oop java_class, int size) {
877 assert(_oop_size_offset != 0, "must be set");
878 java_class->int_field_put(_oop_size_offset, size);
879 }
880 int java_lang_Class::static_oop_field_count(oop java_class) {
881 assert(_static_oop_field_count_offset != 0, "must be set");
882 return java_class->int_field(_static_oop_field_count_offset);
883 }
884 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
885 assert(_static_oop_field_count_offset != 0, "must be set");
886 java_class->int_field_put(_static_oop_field_count_offset, size);
887 }
888
889 oop java_lang_Class::protection_domain(oop java_class) {
890 assert(_protection_domain_offset != 0, "must be set");
891 return java_class->obj_field(_protection_domain_offset);
892 }
893 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
894 assert(_protection_domain_offset != 0, "must be set");
895 java_class->obj_field_put(_protection_domain_offset, pd);
896 }
897
898 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
899 assert(_component_mirror_offset != 0, "must be set");
900 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
901 }
902 oop java_lang_Class::component_mirror(oop java_class) {
903 assert(_component_mirror_offset != 0, "must be set");
904 return java_class->obj_field(_component_mirror_offset);
905 }
906
907 oop java_lang_Class::init_lock(oop java_class) {
908 assert(_init_lock_offset != 0, "must be set");
909 return java_class->obj_field(_init_lock_offset);
910 }
911 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
912 assert(_init_lock_offset != 0, "must be set");
913 java_class->obj_field_put(_init_lock_offset, init_lock);
914 }
915
916 objArrayOop java_lang_Class::signers(oop java_class) {
917 assert(_signers_offset != 0, "must be set");
918 return (objArrayOop)java_class->obj_field(_signers_offset);
919 }
920 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
921 assert(_signers_offset != 0, "must be set");
922 java_class->obj_field_put(_signers_offset, (oop)signers);
923 }
924
925
926 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
927 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
928 if (_class_loader_offset != 0) {
929 java_class->obj_field_put(_class_loader_offset, loader);
930 }
931 }
932
933 oop java_lang_Class::class_loader(oop java_class) {
934 assert(_class_loader_offset != 0, "must be set");
935 return java_class->obj_field(_class_loader_offset);
936 }
937
938 oop java_lang_Class::module(oop java_class) {
939 assert(_module_offset != 0, "must be set");
940 return java_class->obj_field(_module_offset);
941 }
942
943 void java_lang_Class::set_module(oop java_class, oop module) {
944 assert(_module_offset != 0, "must be set");
945 java_class->obj_field_put(_module_offset, module);
946 }
947
948 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
949 // This should be improved by adding a field at the Java level or by
950 // introducing a new VM klass (see comment in ClassFileParser)
951 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
952 if (type != T_VOID) {
953 Klass* aklass = Universe::typeArrayKlassObj(type);
954 assert(aklass != NULL, "correct bootstrap");
955 set_array_klass(java_class, aklass);
956 }
957 #ifdef ASSERT
958 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
959 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
960 #endif
961 return java_class;
962 }
963
964
965 Klass* java_lang_Class::as_Klass(oop java_class) {
966 //%note memory_2
967 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
968 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
969 assert(k == NULL || k->is_klass(), "type check");
970 return k;
971 }
972
973
974 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
975 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
976 java_class->metadata_field_put(_klass_offset, klass);
977 }
978
979
980 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
981 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
982 Symbol* name = NULL;
983 bool is_instance = false;
984 if (is_primitive(java_class)) {
985 name = vmSymbols::type_signature(primitive_type(java_class));
986 } else {
987 Klass* k = as_Klass(java_class);
988 is_instance = k->is_instance_klass();
989 name = k->name();
990 }
991 if (name == NULL) {
992 st->print("<null>");
993 return;
994 }
995 if (is_instance) st->print("L");
996 st->write((char*) name->base(), (int) name->utf8_length());
997 if (is_instance) st->print(";");
998 }
999
1000 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
1001 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1002 Symbol* name;
1003 if (is_primitive(java_class)) {
1004 name = vmSymbols::type_signature(primitive_type(java_class));
1005 // Because this can create a new symbol, the caller has to decrement
1006 // the refcount, so make adjustment here and below for symbols returned
1007 // that are not created or incremented due to a successful lookup.
1008 name->increment_refcount();
1009 } else {
1010 Klass* k = as_Klass(java_class);
1011 if (!k->is_instance_klass()) {
1012 name = k->name();
1013 name->increment_refcount();
1014 } else {
1015 ResourceMark rm;
1016 const char* sigstr = k->signature_name();
1017 int siglen = (int) strlen(sigstr);
1018 if (!intern_if_not_found) {
1019 name = SymbolTable::probe(sigstr, siglen);
1020 } else {
1021 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
1022 }
1023 }
1024 }
1025 return name;
1026 }
1027
1028 // Returns the Java name for this Java mirror (Resource allocated)
1029 // See Klass::external_name().
1030 // For primitive type Java mirrors, its type name is returned.
1031 const char* java_lang_Class::as_external_name(oop java_class) {
1032 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1033 const char* name = NULL;
1034 if (is_primitive(java_class)) {
1035 name = type2name(primitive_type(java_class));
1036 } else {
1037 name = as_Klass(java_class)->external_name();
1038 }
1039 if (name == NULL) {
1040 name = "<null>";
1041 }
1042 return name;
1043 }
1044
1045 Klass* java_lang_Class::array_klass(oop java_class) {
1046 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1047 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1048 return k;
1049 }
1050
1051
1052 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
1053 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1054 java_class->metadata_field_put(_array_klass_offset, klass);
1055 }
1056
1057
1058 bool java_lang_Class::is_primitive(oop java_class) {
1059 // should assert:
1060 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1061 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
1062
1063 #ifdef ASSERT
1064 if (is_primitive) {
1065 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1066 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
1067 "Should be either the T_VOID primitive or a java primitive");
1068 }
1069 #endif
1070
1071 return is_primitive;
1072 }
1073
1074
1075 BasicType java_lang_Class::primitive_type(oop java_class) {
1076 assert(java_lang_Class::is_primitive(java_class), "just checking");
1077 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1078 BasicType type = T_VOID;
1079 if (ak != NULL) {
1080 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1081 type = ArrayKlass::cast(ak)->element_type();
1082 } else {
1083 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1084 }
1085 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1086 return type;
1087 }
1088
1089 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1090 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1091 if (is_primitive(java_class)) {
1092 if (reference_klass != NULL)
1093 (*reference_klass) = NULL;
1094 return primitive_type(java_class);
1095 } else {
1096 if (reference_klass != NULL)
1097 (*reference_klass) = as_Klass(java_class);
1098 return T_OBJECT;
1099 }
1100 }
1101
1102
1103 oop java_lang_Class::primitive_mirror(BasicType t) {
1104 oop mirror = Universe::java_mirror(t);
1105 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1106 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1107 return mirror;
1108 }
1109
1110 bool java_lang_Class::offsets_computed = false;
1111 int java_lang_Class::classRedefinedCount_offset = -1;
1112
1113 void java_lang_Class::compute_offsets() {
1114 assert(!offsets_computed, "offsets should be initialized only once");
1115 offsets_computed = true;
1116
1117 Klass* k = SystemDictionary::Class_klass();
1118 // The classRedefinedCount field is only present starting in 1.5,
1119 // so don't go fatal.
1120 compute_optional_offset(classRedefinedCount_offset,
1121 k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
1122
1123 // Needs to be optional because the old build runs Queens during bootstrapping
1124 // and jdk8-9 doesn't have coordinated pushes yet.
1125 compute_optional_offset(_class_loader_offset,
1126 k, vmSymbols::classLoader_name(),
1127 vmSymbols::classloader_signature());
1128
1129 compute_offset(_component_mirror_offset,
1130 k, vmSymbols::componentType_name(),
1131 vmSymbols::class_signature());
1132
1133 compute_offset(_module_offset,
1134 k, vmSymbols::module_name(),
1135 vmSymbols::module_signature());
1136
1137 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1138 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1139 // GC treats them the same.
1140 _init_lock_offset = _component_mirror_offset;
1141
1142 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1143 }
1144
1145 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1146 if (classRedefinedCount_offset == -1) {
1147 // If we don't have an offset for it then just return -1 as a marker.
1148 return -1;
1149 }
1150
1151 return the_class_mirror->int_field(classRedefinedCount_offset);
1152 }
1153
1154 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1155 if (classRedefinedCount_offset == -1) {
1156 // If we don't have an offset for it then nothing to set.
1157 return;
1158 }
1159
1160 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1161 }
1162
1163
1164 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1165 // platform thread structure, and a eetop offset which was used for thread
1166 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1167 // merged, so in the HotSpot VM we just use the eetop field for the thread
1168 // instead of the privateInfo_offset.
1169 //
1170 // Note: The stackSize field is only present starting in 1.4.
1171
1172 int java_lang_Thread::_name_offset = 0;
1173 int java_lang_Thread::_group_offset = 0;
1174 int java_lang_Thread::_contextClassLoader_offset = 0;
1175 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1176 int java_lang_Thread::_priority_offset = 0;
1177 int java_lang_Thread::_eetop_offset = 0;
1178 int java_lang_Thread::_daemon_offset = 0;
1179 int java_lang_Thread::_stillborn_offset = 0;
1180 int java_lang_Thread::_stackSize_offset = 0;
1181 int java_lang_Thread::_tid_offset = 0;
1182 int java_lang_Thread::_thread_status_offset = 0;
1183 int java_lang_Thread::_park_blocker_offset = 0;
1184 int java_lang_Thread::_park_event_offset = 0 ;
1185
1186
1187 void java_lang_Thread::compute_offsets() {
1188 assert(_group_offset == 0, "offsets should be initialized only once");
1189
1190 Klass* k = SystemDictionary::Thread_klass();
1191 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1192 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
1193 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
1194 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
1195 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
1196 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1197 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
1198 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
1199 // The stackSize field is only present starting in 1.4, so don't go fatal.
1200 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
1201 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
1202 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
1203 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
1204 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
1205 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
1206 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
1207 vmSymbols::long_signature());
1208 }
1209
1210
1211 JavaThread* java_lang_Thread::thread(oop java_thread) {
1212 return (JavaThread*)java_thread->address_field(_eetop_offset);
1213 }
1214
1215
1216 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1217 java_thread->address_field_put(_eetop_offset, (address)thread);
1218 }
1219
1220
1221 oop java_lang_Thread::name(oop java_thread) {
1222 return java_thread->obj_field(_name_offset);
1223 }
1224
1225
1226 void java_lang_Thread::set_name(oop java_thread, oop name) {
1227 java_thread->obj_field_put(_name_offset, name);
1228 }
1229
1230
1231 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1232 return (ThreadPriority)java_thread->int_field(_priority_offset);
1233 }
1234
1235
1236 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1237 java_thread->int_field_put(_priority_offset, priority);
1238 }
1239
1240
1241 oop java_lang_Thread::threadGroup(oop java_thread) {
1242 return java_thread->obj_field(_group_offset);
1243 }
1244
1245
1246 bool java_lang_Thread::is_stillborn(oop java_thread) {
1247 return java_thread->bool_field(_stillborn_offset) != 0;
1248 }
1249
1250
1251 // We never have reason to turn the stillborn bit off
1252 void java_lang_Thread::set_stillborn(oop java_thread) {
1253 java_thread->bool_field_put(_stillborn_offset, true);
1254 }
1255
1256
1257 bool java_lang_Thread::is_alive(oop java_thread) {
1258 JavaThread* thr = java_lang_Thread::thread(java_thread);
1259 return (thr != NULL);
1260 }
1261
1262
1263 bool java_lang_Thread::is_daemon(oop java_thread) {
1264 return java_thread->bool_field(_daemon_offset) != 0;
1265 }
1266
1267
1268 void java_lang_Thread::set_daemon(oop java_thread) {
1269 java_thread->bool_field_put(_daemon_offset, true);
1270 }
1271
1272 oop java_lang_Thread::context_class_loader(oop java_thread) {
1273 return java_thread->obj_field(_contextClassLoader_offset);
1274 }
1275
1276 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1277 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1278 }
1279
1280
1281 jlong java_lang_Thread::stackSize(oop java_thread) {
1282 if (_stackSize_offset > 0) {
1283 return java_thread->long_field(_stackSize_offset);
1284 } else {
1285 return 0;
1286 }
1287 }
1288
1289 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1290 void java_lang_Thread::set_thread_status(oop java_thread,
1291 java_lang_Thread::ThreadStatus status) {
1292 // The threadStatus is only present starting in 1.5
1293 if (_thread_status_offset > 0) {
1294 java_thread->int_field_put(_thread_status_offset, status);
1295 }
1296 }
1297
1298 // Read thread status value from threadStatus field in java.lang.Thread java class.
1299 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1300 assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() ||
1301 JavaThread::current()->thread_state() == _thread_in_vm,
1302 "Java Thread is not running in vm");
1303 // The threadStatus is only present starting in 1.5
1304 if (_thread_status_offset > 0) {
1305 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1306 } else {
1307 // All we can easily figure out is if it is alive, but that is
1308 // enough info for a valid unknown status.
1309 // These aren't restricted to valid set ThreadStatus values, so
1310 // use JVMTI values and cast.
1311 JavaThread* thr = java_lang_Thread::thread(java_thread);
1312 if (thr == NULL) {
1313 // the thread hasn't run yet or is in the process of exiting
1314 return NEW;
1315 }
1316 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1317 }
1318 }
1319
1320
1321 jlong java_lang_Thread::thread_id(oop java_thread) {
1322 // The thread ID field is only present starting in 1.5
1323 if (_tid_offset > 0) {
1324 return java_thread->long_field(_tid_offset);
1325 } else {
1326 return 0;
1327 }
1328 }
1329
1330 oop java_lang_Thread::park_blocker(oop java_thread) {
1331 assert(JDK_Version::current().supports_thread_park_blocker() &&
1332 _park_blocker_offset != 0, "Must support parkBlocker field");
1333
1334 if (_park_blocker_offset > 0) {
1335 return java_thread->obj_field(_park_blocker_offset);
1336 }
1337
1338 return NULL;
1339 }
1340
1341 jlong java_lang_Thread::park_event(oop java_thread) {
1342 if (_park_event_offset > 0) {
1343 return java_thread->long_field(_park_event_offset);
1344 }
1345 return 0;
1346 }
1347
1348 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1349 if (_park_event_offset > 0) {
1350 java_thread->long_field_put(_park_event_offset, ptr);
1351 return true;
1352 }
1353 return false;
1354 }
1355
1356
1357 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1358 assert(_thread_status_offset != 0, "Must have thread status");
1359 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1360 switch (status) {
1361 case NEW : return "NEW";
1362 case RUNNABLE : return "RUNNABLE";
1363 case SLEEPING : return "TIMED_WAITING (sleeping)";
1364 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1365 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1366 case PARKED : return "WAITING (parking)";
1367 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1368 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1369 case TERMINATED : return "TERMINATED";
1370 default : return "UNKNOWN";
1371 };
1372 }
1373 int java_lang_ThreadGroup::_parent_offset = 0;
1374 int java_lang_ThreadGroup::_name_offset = 0;
1375 int java_lang_ThreadGroup::_threads_offset = 0;
1376 int java_lang_ThreadGroup::_groups_offset = 0;
1377 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1378 int java_lang_ThreadGroup::_destroyed_offset = 0;
1379 int java_lang_ThreadGroup::_daemon_offset = 0;
1380 int java_lang_ThreadGroup::_nthreads_offset = 0;
1381 int java_lang_ThreadGroup::_ngroups_offset = 0;
1382
1383 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1384 assert(java_thread_group->is_oop(), "thread group must be oop");
1385 return java_thread_group->obj_field(_parent_offset);
1386 }
1387
1388 // ("name as oop" accessor is not necessary)
1389
1390 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1391 oop name = java_thread_group->obj_field(_name_offset);
1392 // ThreadGroup.name can be null
1393 if (name != NULL) {
1394 return java_lang_String::as_utf8_string(name);
1395 }
1396 return NULL;
1397 }
1398
1399 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1400 assert(java_thread_group->is_oop(), "thread group must be oop");
1401 return java_thread_group->int_field(_nthreads_offset);
1402 }
1403
1404 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1405 oop threads = java_thread_group->obj_field(_threads_offset);
1406 assert(threads != NULL, "threadgroups should have threads");
1407 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1408 return objArrayOop(threads);
1409 }
1410
1411 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1412 assert(java_thread_group->is_oop(), "thread group must be oop");
1413 return java_thread_group->int_field(_ngroups_offset);
1414 }
1415
1416 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1417 oop groups = java_thread_group->obj_field(_groups_offset);
1418 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1419 return objArrayOop(groups);
1420 }
1421
1422 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1423 assert(java_thread_group->is_oop(), "thread group must be oop");
1424 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1425 }
1426
1427 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1428 assert(java_thread_group->is_oop(), "thread group must be oop");
1429 return java_thread_group->bool_field(_destroyed_offset) != 0;
1430 }
1431
1432 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1433 assert(java_thread_group->is_oop(), "thread group must be oop");
1434 return java_thread_group->bool_field(_daemon_offset) != 0;
1435 }
1436
1437 void java_lang_ThreadGroup::compute_offsets() {
1438 assert(_parent_offset == 0, "offsets should be initialized only once");
1439
1440 Klass* k = SystemDictionary::ThreadGroup_klass();
1441
1442 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1443 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1444 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1445 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1446 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1447 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1448 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1449 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1450 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1451 }
1452
1453
1454 void java_lang_Throwable::compute_offsets() {
1455 Klass* k = SystemDictionary::Throwable_klass();
1456 compute_offset(depth_offset, k, vmSymbols::depth_name(), vmSymbols::int_signature());
1457 }
1458
1459 oop java_lang_Throwable::unassigned_stacktrace() {
1460 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1461 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1462 if (UseCompressedOops) {
1463 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1464 } else {
1465 return oopDesc::load_decode_heap_oop((oop*)addr);
1466 }
1467 }
1468
1469 oop java_lang_Throwable::backtrace(oop throwable) {
1470 return throwable->obj_field_acquire(backtrace_offset);
1471 }
1472
1473
1474 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1475 throwable->release_obj_field_put(backtrace_offset, value);
1476 }
1477
1478 int java_lang_Throwable::depth(oop throwable) {
1479 return throwable->int_field(depth_offset);
1480 }
1481
1482 void java_lang_Throwable::set_depth(oop throwable, int value) {
1483 throwable->int_field_put(depth_offset, value);
1484 }
1485
1486 oop java_lang_Throwable::message(Handle throwable) {
1487 return throwable->obj_field(detailMessage_offset);
1488 }
1489
1490
1491 // Return Symbol for detailed_message or NULL
1492 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1493 PRESERVE_EXCEPTION_MARK; // Keep original exception
1494 oop detailed_message = java_lang_Throwable::message(throwable);
1495 if (detailed_message != NULL) {
1496 return java_lang_String::as_symbol(detailed_message, THREAD);
1497 }
1498 return NULL;
1499 }
1500
1501 void java_lang_Throwable::set_message(oop throwable, oop value) {
1502 throwable->obj_field_put(detailMessage_offset, value);
1503 }
1504
1505
1506 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1507 throwable->obj_field_put(stackTrace_offset, st_element_array);
1508 }
1509
1510 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1511 set_stacktrace(throwable, NULL);
1512 }
1513
1514
1515 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1516 ResourceMark rm;
1517 Klass* k = throwable->klass();
1518 assert(k != NULL, "just checking");
1519 st->print("%s", k->external_name());
1520 oop msg = message(throwable);
1521 if (msg != NULL) {
1522 st->print(": %s", java_lang_String::as_utf8_string(msg));
1523 }
1524 }
1525
1526 // After this many redefines, the stack trace is unreliable.
1527 const int MAX_VERSION = USHRT_MAX;
1528
1529 static inline bool version_matches(Method* method, int version) {
1530 assert(version < MAX_VERSION, "version is too big");
1531 return method != NULL && (method->constants()->version() == version);
1532 }
1533
1534
1535 // This class provides a simple wrapper over the internal structure of
1536 // exception backtrace to insulate users of the backtrace from needing
1537 // to know what it looks like.
1538 class BacktraceBuilder: public StackObj {
1539 friend class BacktraceIterator;
1540 private:
1541 Handle _backtrace;
1542 objArrayOop _head;
1543 typeArrayOop _methods;
1544 typeArrayOop _bcis;
1545 objArrayOop _mirrors;
1546 typeArrayOop _cprefs; // needed to insulate method name against redefinition
1547 int _index;
1548 NoSafepointVerifier _nsv;
1549
1550 enum {
1551 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1552 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1553 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1554 trace_cprefs_offset = java_lang_Throwable::trace_cprefs_offset,
1555 trace_next_offset = java_lang_Throwable::trace_next_offset,
1556 trace_size = java_lang_Throwable::trace_size,
1557 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1558 };
1559
1560 // get info out of chunks
1561 static typeArrayOop get_methods(objArrayHandle chunk) {
1562 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1563 assert(methods != NULL, "method array should be initialized in backtrace");
1564 return methods;
1565 }
1566 static typeArrayOop get_bcis(objArrayHandle chunk) {
1567 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1568 assert(bcis != NULL, "bci array should be initialized in backtrace");
1569 return bcis;
1570 }
1571 static objArrayOop get_mirrors(objArrayHandle chunk) {
1572 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1573 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1574 return mirrors;
1575 }
1576 static typeArrayOop get_cprefs(objArrayHandle chunk) {
1577 typeArrayOop cprefs = typeArrayOop(chunk->obj_at(trace_cprefs_offset));
1578 assert(cprefs != NULL, "cprefs array should be initialized in backtrace");
1579 return cprefs;
1580 }
1581
1582 public:
1583
1584 // constructor for new backtrace
1585 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _cprefs(NULL) {
1586 expand(CHECK);
1587 _backtrace = _head;
1588 _index = 0;
1589 }
1590
1591 BacktraceBuilder(objArrayHandle backtrace) {
1592 _methods = get_methods(backtrace);
1593 _bcis = get_bcis(backtrace);
1594 _mirrors = get_mirrors(backtrace);
1595 _cprefs = get_cprefs(backtrace);
1596 assert(_methods->length() == _bcis->length() &&
1597 _methods->length() == _mirrors->length(),
1598 "method and source information arrays should match");
1599
1600 // head is the preallocated backtrace
1601 _backtrace = _head = backtrace();
1602 _index = 0;
1603 }
1604
1605 void expand(TRAPS) {
1606 objArrayHandle old_head(THREAD, _head);
1607 PauseNoSafepointVerifier pnsv(&_nsv);
1608
1609 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1610 objArrayHandle new_head(THREAD, head);
1611
1612 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1613 typeArrayHandle new_methods(THREAD, methods);
1614
1615 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1616 typeArrayHandle new_bcis(THREAD, bcis);
1617
1618 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1619 objArrayHandle new_mirrors(THREAD, mirrors);
1620
1621 typeArrayOop cprefs = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1622 typeArrayHandle new_cprefs(THREAD, cprefs);
1623
1624 if (!old_head.is_null()) {
1625 old_head->obj_at_put(trace_next_offset, new_head());
1626 }
1627 new_head->obj_at_put(trace_methods_offset, new_methods());
1628 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1629 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1630 new_head->obj_at_put(trace_cprefs_offset, new_cprefs());
1631
1632 _head = new_head();
1633 _methods = new_methods();
1634 _bcis = new_bcis();
1635 _mirrors = new_mirrors();
1636 _cprefs = new_cprefs();
1637 _index = 0;
1638 }
1639
1640 oop backtrace() {
1641 return _backtrace();
1642 }
1643
1644 inline void push(Method* method, int bci, TRAPS) {
1645 // Smear the -1 bci to 0 since the array only holds unsigned
1646 // shorts. The later line number lookup would just smear the -1
1647 // to a 0 even if it could be recorded.
1648 if (bci == SynchronizationEntryBCI) bci = 0;
1649
1650 if (_index >= trace_chunk_size) {
1651 methodHandle mhandle(THREAD, method);
1652 expand(CHECK);
1653 method = mhandle();
1654 }
1655
1656 _methods->short_at_put(_index, method->orig_method_idnum());
1657 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
1658 _cprefs->short_at_put(_index, method->name_index());
1659
1660 // We need to save the mirrors in the backtrace to keep the class
1661 // from being unloaded while we still have this stack trace.
1662 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1663 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1664 _index++;
1665 }
1666
1667 };
1668
1669 struct BacktraceElement : public StackObj {
1670 int _method_id;
1671 int _bci;
1672 int _version;
1673 int _cpref;
1674 Handle _mirror;
1675 BacktraceElement(Handle mirror, int mid, int version, int bci, int cpref) :
1676 _mirror(mirror), _method_id(mid), _version(version), _bci(bci), _cpref(cpref) {}
1677 };
1678
1679 class BacktraceIterator : public StackObj {
1680 int _index;
1681 objArrayHandle _result;
1682 objArrayHandle _mirrors;
1683 typeArrayHandle _methods;
1684 typeArrayHandle _bcis;
1685 typeArrayHandle _cprefs;
1686
1687 void init(objArrayHandle result, Thread* thread) {
1688 // Get method id, bci, version and mirror from chunk
1689 _result = result;
1690 if (_result.not_null()) {
1691 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
1692 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
1693 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
1694 _cprefs = typeArrayHandle(thread, BacktraceBuilder::get_cprefs(_result));
1695 _index = 0;
1696 }
1697 }
1698 public:
1699 BacktraceIterator(objArrayHandle result, Thread* thread) {
1700 init(result, thread);
1701 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
1702 }
1703
1704 BacktraceElement next(Thread* thread) {
1705 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
1706 _methods->short_at(_index),
1707 Backtrace::version_at(_bcis->int_at(_index)),
1708 Backtrace::bci_at(_bcis->int_at(_index)),
1709 _cprefs->short_at(_index));
1710 _index++;
1711
1712 if (_index >= java_lang_Throwable::trace_chunk_size) {
1713 int next_offset = java_lang_Throwable::trace_next_offset;
1714 // Get next chunk
1715 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
1716 init(result, thread);
1717 }
1718 return e;
1719 }
1720
1721 bool repeat() {
1722 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
1723 }
1724 };
1725
1726
1727 // Print stack trace element to resource allocated buffer
1728 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
1729 int version, int bci, int cpref) {
1730 ResourceMark rm;
1731
1732 // Get strings and string lengths
1733 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1734 const char* klass_name = holder->external_name();
1735 int buf_len = (int)strlen(klass_name);
1736
1737 Method* method = holder->method_with_orig_idnum(method_id, version);
1738
1739 // The method can be NULL if the requested class version is gone
1740 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
1741 char* method_name = sym->as_C_string();
1742 buf_len += (int)strlen(method_name);
1743
1744 char* source_file_name = NULL;
1745 Symbol* source = Backtrace::get_source_file_name(holder, version);
1746 if (source != NULL) {
1747 source_file_name = source->as_C_string();
1748 buf_len += (int)strlen(source_file_name);
1749 }
1750
1751 char *module_name = NULL, *module_version = NULL;
1752 ModuleEntry* module = holder->module();
1753 if (module->is_named()) {
1754 module_name = module->name()->as_C_string();
1755 buf_len += (int)strlen(module_name);
1756 if (module->version() != NULL) {
1757 module_version = module->version()->as_C_string();
1758 buf_len += (int)strlen(module_version);
1759 }
1760 }
1761
1762 // Allocate temporary buffer with extra space for formatting and line number
1763 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1764
1765 // Print stack trace line in buffer
1766 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
1767
1768 // Print module information
1769 if (module_name != NULL) {
1770 if (module_version != NULL) {
1771 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
1772 } else {
1773 sprintf(buf + (int)strlen(buf), "%s/", module_name);
1774 }
1775 }
1776
1777 if (!version_matches(method, version)) {
1778 strcat(buf, "Redefined)");
1779 } else {
1780 int line_number = Backtrace::get_line_number(method, bci);
1781 if (line_number == -2) {
1782 strcat(buf, "Native Method)");
1783 } else {
1784 if (source_file_name != NULL && (line_number != -1)) {
1785 // Sourcename and linenumber
1786 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
1787 } else if (source_file_name != NULL) {
1788 // Just sourcename
1789 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
1790 } else {
1791 // Neither sourcename nor linenumber
1792 sprintf(buf + (int)strlen(buf), "Unknown Source)");
1793 }
1794 CompiledMethod* nm = method->code();
1795 if (WizardMode && nm != NULL) {
1796 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1797 }
1798 }
1799 }
1800
1801 st->print_cr("%s", buf);
1802 }
1803
1804 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
1805 Handle mirror = method->method_holder()->java_mirror();
1806 int method_id = method->orig_method_idnum();
1807 int version = method->constants()->version();
1808 int cpref = method->name_index();
1809 print_stack_element_to_stream(st, mirror, method_id, version, bci, cpref);
1810 }
1811
1812 /**
1813 * Print the throwable message and its stack trace plus all causes by walking the
1814 * cause chain. The output looks the same as of Throwable.printStackTrace().
1815 */
1816 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
1817 // First, print the message.
1818 print(throwable, st);
1819 st->cr();
1820
1821 // Now print the stack trace.
1822 Thread* THREAD = Thread::current();
1823 while (throwable.not_null()) {
1824 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
1825 if (result.is_null()) {
1826 st->print_raw_cr("\t<<no stack trace available>>");
1827 return;
1828 }
1829 BacktraceIterator iter(result, THREAD);
1830
1831 while (iter.repeat()) {
1832 BacktraceElement bte = iter.next(THREAD);
1833 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._cpref);
1834 }
1835 {
1836 // Call getCause() which doesn't necessarily return the _cause field.
1837 EXCEPTION_MARK;
1838 JavaValue cause(T_OBJECT);
1839 JavaCalls::call_virtual(&cause,
1840 throwable,
1841 KlassHandle(THREAD, throwable->klass()),
1842 vmSymbols::getCause_name(),
1843 vmSymbols::void_throwable_signature(),
1844 THREAD);
1845 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1846 if (HAS_PENDING_EXCEPTION) {
1847 CLEAR_PENDING_EXCEPTION;
1848 throwable = Handle();
1849 } else {
1850 throwable = Handle(THREAD, (oop) cause.get_jobject());
1851 if (throwable.not_null()) {
1852 st->print("Caused by: ");
1853 print(throwable, st);
1854 st->cr();
1855 }
1856 }
1857 }
1858 }
1859 }
1860
1861 /**
1862 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
1863 */
1864 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
1865 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
1866 JavaValue result(T_VOID);
1867 JavaCalls::call_virtual(&result,
1868 throwable,
1869 KlassHandle(THREAD, SystemDictionary::Throwable_klass()),
1870 vmSymbols::printStackTrace_name(),
1871 vmSymbols::void_method_signature(),
1872 THREAD);
1873 }
1874
1875 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
1876 if (!StackTraceInThrowable) return;
1877 ResourceMark rm(THREAD);
1878
1879 // Start out by clearing the backtrace for this object, in case the VM
1880 // runs out of memory while allocating the stack trace
1881 set_backtrace(throwable(), NULL);
1882 // Clear lazily constructed Java level stacktrace if refilling occurs
1883 // This is unnecessary in 1.7+ but harmless
1884 clear_stacktrace(throwable());
1885
1886 int max_depth = MaxJavaStackTraceDepth;
1887 JavaThread* thread = (JavaThread*)THREAD;
1888
1889 BacktraceBuilder bt(CHECK);
1890
1891 // If there is no Java frame just return the method that was being called
1892 // with bci 0
1893 if (!thread->has_last_Java_frame()) {
1894 if (max_depth >= 1 && method() != NULL) {
1895 bt.push(method(), 0, CHECK);
1896 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
1897 set_depth(throwable(), 1);
1898 set_backtrace(throwable(), bt.backtrace());
1899 }
1900 return;
1901 }
1902
1903 // Instead of using vframe directly, this version of fill_in_stack_trace
1904 // basically handles everything by hand. This significantly improved the
1905 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1906 // See bug 6333838 for more details.
1907 // The "ASSERT" here is to verify this method generates the exactly same stack
1908 // trace as utilizing vframe.
1909 #ifdef ASSERT
1910 vframeStream st(thread);
1911 methodHandle st_method(THREAD, st.method());
1912 #endif
1913 int total_count = 0;
1914 RegisterMap map(thread, false);
1915 int decode_offset = 0;
1916 CompiledMethod* nm = NULL;
1917 bool skip_fillInStackTrace_check = false;
1918 bool skip_throwableInit_check = false;
1919 bool skip_hidden = !ShowHiddenFrames;
1920
1921 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1922 Method* method = NULL;
1923 int bci = 0;
1924
1925 // Compiled java method case.
1926 if (decode_offset != 0) {
1927 DebugInfoReadStream stream(nm, decode_offset);
1928 decode_offset = stream.read_int();
1929 method = (Method*)nm->metadata_at(stream.read_int());
1930 bci = stream.read_bci();
1931 } else {
1932 if (fr.is_first_frame()) break;
1933 address pc = fr.pc();
1934 if (fr.is_interpreted_frame()) {
1935 address bcp = fr.interpreter_frame_bcp();
1936 method = fr.interpreter_frame_method();
1937 bci = method->bci_from(bcp);
1938 fr = fr.sender(&map);
1939 } else {
1940 CodeBlob* cb = fr.cb();
1941 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1942 // but non nmethod
1943 fr = fr.sender(&map);
1944 if (cb == NULL || !cb->is_compiled()) {
1945 continue;
1946 }
1947 nm = cb->as_compiled_method();
1948 if (nm->method()->is_native()) {
1949 method = nm->method();
1950 bci = 0;
1951 } else {
1952 PcDesc* pd = nm->pc_desc_at(pc);
1953 decode_offset = pd->scope_decode_offset();
1954 // if decode_offset is not equal to 0, it will execute the
1955 // "compiled java method case" at the beginning of the loop.
1956 continue;
1957 }
1958 }
1959 }
1960 #ifdef ASSERT
1961 assert(st_method() == method && st.bci() == bci,
1962 "Wrong stack trace");
1963 st.next();
1964 // vframeStream::method isn't GC-safe so store off a copy
1965 // of the Method* in case we GC.
1966 if (!st.at_end()) {
1967 st_method = st.method();
1968 }
1969 #endif
1970
1971 // the format of the stacktrace will be:
1972 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1973 // - 0 or more <init> methods for the exception class (skipped)
1974 // - rest of the stack
1975
1976 if (!skip_fillInStackTrace_check) {
1977 if (method->name() == vmSymbols::fillInStackTrace_name() &&
1978 throwable->is_a(method->method_holder())) {
1979 continue;
1980 }
1981 else {
1982 skip_fillInStackTrace_check = true; // gone past them all
1983 }
1984 }
1985 if (!skip_throwableInit_check) {
1986 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1987
1988 // skip <init> methods of the exception class and superclasses
1989 // This is simlar to classic VM.
1990 if (method->name() == vmSymbols::object_initializer_name() &&
1991 throwable->is_a(method->method_holder())) {
1992 continue;
1993 } else {
1994 // there are none or we've seen them all - either way stop checking
1995 skip_throwableInit_check = true;
1996 }
1997 }
1998 if (method->is_hidden()) {
1999 if (skip_hidden) continue;
2000 }
2001 bt.push(method, bci, CHECK);
2002 total_count++;
2003 }
2004
2005 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2006
2007 // Put completed stack trace into throwable object
2008 set_backtrace(throwable(), bt.backtrace());
2009 set_depth(throwable(), total_count);
2010 }
2011
2012 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2013 // No-op if stack trace is disabled
2014 if (!StackTraceInThrowable) {
2015 return;
2016 }
2017
2018 // Disable stack traces for some preallocated out of memory errors
2019 if (!Universe::should_fill_in_stack_trace(throwable)) {
2020 return;
2021 }
2022
2023 PRESERVE_EXCEPTION_MARK;
2024
2025 JavaThread* thread = JavaThread::active();
2026 fill_in_stack_trace(throwable, method, thread);
2027 // ignore exceptions thrown during stack trace filling
2028 CLEAR_PENDING_EXCEPTION;
2029 }
2030
2031 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2032 // Allocate stack trace - backtrace is created but not filled in
2033
2034 // No-op if stack trace is disabled
2035 if (!StackTraceInThrowable) return;
2036 BacktraceBuilder bt(CHECK); // creates a backtrace
2037 set_backtrace(throwable(), bt.backtrace());
2038 }
2039
2040
2041 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2042 // Fill in stack trace into preallocated backtrace (no GC)
2043
2044 // No-op if stack trace is disabled
2045 if (!StackTraceInThrowable) return;
2046
2047 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2048
2049 JavaThread* THREAD = JavaThread::current();
2050
2051 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2052 assert(backtrace.not_null(), "backtrace should have been preallocated");
2053
2054 ResourceMark rm(THREAD);
2055 vframeStream st(THREAD);
2056
2057 BacktraceBuilder bt(backtrace);
2058
2059 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2060 // methods as preallocated errors aren't created by "java" code.
2061
2062 // fill in as much stack trace as possible
2063 int chunk_count = 0;
2064 for (;!st.at_end(); st.next()) {
2065 bt.push(st.method(), st.bci(), CHECK);
2066 chunk_count++;
2067
2068 // Bail-out for deep stacks
2069 if (chunk_count >= trace_chunk_size) break;
2070 }
2071 set_depth(throwable(), chunk_count);
2072 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2073
2074 // We support the Throwable immutability protocol defined for Java 7.
2075 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2076 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2077 }
2078
2079 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2080 objArrayHandle stack_trace_array_h, TRAPS) {
2081
2082 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2083 THROW(vmSymbols::java_lang_NullPointerException());
2084 }
2085
2086 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2087
2088 if (stack_trace_array_h->length() != depth(throwable())) {
2089 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2090 }
2091
2092 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2093 BacktraceIterator iter(result, THREAD);
2094
2095 int index = 0;
2096 while (iter.repeat()) {
2097 BacktraceElement bte = iter.next(THREAD);
2098
2099 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2100
2101 if (stack_trace_element.is_null()) {
2102 THROW(vmSymbols::java_lang_NullPointerException());
2103 }
2104
2105 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2106 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2107
2108 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2109 method,
2110 bte._version,
2111 bte._bci,
2112 bte._cpref, CHECK);
2113 }
2114 }
2115
2116 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2117 // Allocate java.lang.StackTraceElement instance
2118 Klass* k = SystemDictionary::StackTraceElement_klass();
2119 assert(k != NULL, "must be loaded in 1.4+");
2120 instanceKlassHandle ik (THREAD, k);
2121 if (ik->should_be_initialized()) {
2122 ik->initialize(CHECK_0);
2123 }
2124
2125 Handle element = ik->allocate_instance_handle(CHECK_0);
2126
2127 int cpref = method->name_index();
2128 int version = method->constants()->version();
2129 fill_in(element, method->method_holder(), method, version, bci, cpref, CHECK_0);
2130 return element();
2131 }
2132
2133 void java_lang_StackTraceElement::fill_in(Handle element,
2134 InstanceKlass* holder, const methodHandle& method,
2135 int version, int bci, int cpref, TRAPS) {
2136 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2137
2138 // Fill in class name
2139 ResourceMark rm(THREAD);
2140 const char* str = holder->external_name();
2141 oop classname = StringTable::intern((char*) str, CHECK);
2142 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2143
2144 // The method can be NULL if the requested class version is gone
2145 Symbol* sym = !method.is_null() ? method->name() : holder->constants()->symbol_at(cpref);
2146
2147 // Fill in method name
2148 oop methodname = StringTable::intern(sym, CHECK);
2149 java_lang_StackTraceElement::set_methodName(element(), methodname);
2150
2151 // Fill in module name and version
2152 ModuleEntry* module = holder->module();
2153 if (module->is_named()) {
2154 oop module_name = StringTable::intern(module->name(), CHECK);
2155 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2156 oop module_version;
2157 if (module->version() != NULL) {
2158 module_version = StringTable::intern(module->version(), CHECK);
2159 } else {
2160 module_version = NULL;
2161 }
2162 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2163 }
2164
2165 if (!version_matches(method(), version)) {
2166 // The method was redefined, accurate line number information isn't available
2167 java_lang_StackTraceElement::set_fileName(element(), NULL);
2168 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2169 } else {
2170 // Fill in source file name and line number.
2171 Symbol* source = Backtrace::get_source_file_name(holder, version);
2172 if (ShowHiddenFrames && source == NULL)
2173 source = vmSymbols::unknown_class_name();
2174 oop filename = StringTable::intern(source, CHECK);
2175 java_lang_StackTraceElement::set_fileName(element(), filename);
2176
2177 int line_number = Backtrace::get_line_number(method, bci);
2178 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2179 }
2180 }
2181
2182 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2183 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2184 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2185 // we should expand MemberName::name when Throwable uses StackTrace
2186 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2187 return method;
2188 }
2189
2190 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci) {
2191 // set Method* or mid/cpref
2192 oop mname = stackFrame->obj_field(_memberName_offset);
2193 InstanceKlass* ik = method->method_holder();
2194 CallInfo info(method(), ik);
2195 MethodHandles::init_method_MemberName(mname, info);
2196 // set bci
2197 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2198 // method may be redefined; store the version
2199 int version = method->constants()->version();
2200 assert((jushort)version == version, "version should be short");
2201 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2202 }
2203
2204 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2205 ResourceMark rm(THREAD);
2206 Handle k (THREAD, stackFrame->obj_field(_declaringClass_offset));
2207 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(k()));
2208 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2209
2210 short version = stackFrame->short_field(_version_offset);
2211 short bci = stackFrame->short_field(_bci_offset);
2212 int cpref = method->name_index();
2213 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, cpref, CHECK);
2214 }
2215
2216 void java_lang_StackFrameInfo::compute_offsets() {
2217 Klass* k = SystemDictionary::StackFrameInfo_klass();
2218 compute_offset(_declaringClass_offset, k, vmSymbols::declaringClass_name(), vmSymbols::class_signature());
2219 compute_offset(_memberName_offset, k, vmSymbols::memberName_name(), vmSymbols::object_signature());
2220 compute_offset(_bci_offset, k, vmSymbols::bci_name(), vmSymbols::short_signature());
2221 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2222 }
2223
2224 void java_lang_LiveStackFrameInfo::compute_offsets() {
2225 Klass* k = SystemDictionary::LiveStackFrameInfo_klass();
2226 compute_offset(_monitors_offset, k, vmSymbols::monitors_name(), vmSymbols::object_array_signature());
2227 compute_offset(_locals_offset, k, vmSymbols::locals_name(), vmSymbols::object_array_signature());
2228 compute_offset(_operands_offset, k, vmSymbols::operands_name(), vmSymbols::object_array_signature());
2229 }
2230
2231 void java_lang_reflect_AccessibleObject::compute_offsets() {
2232 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
2233 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
2234 }
2235
2236 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2237 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2238 return (jboolean) reflect->bool_field(override_offset);
2239 }
2240
2241 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2242 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2243 reflect->bool_field_put(override_offset, (int) value);
2244 }
2245
2246 void java_lang_reflect_Method::compute_offsets() {
2247 Klass* k = SystemDictionary::reflect_Method_klass();
2248 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2249 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2250 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
2251 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2252 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2253 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2254 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2255 // The generic signature and annotations fields are only present in 1.5
2256 signature_offset = -1;
2257 annotations_offset = -1;
2258 parameter_annotations_offset = -1;
2259 annotation_default_offset = -1;
2260 type_annotations_offset = -1;
2261 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2262 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2263 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2264 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
2265 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2266 }
2267
2268 Handle java_lang_reflect_Method::create(TRAPS) {
2269 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2270 Klass* klass = SystemDictionary::reflect_Method_klass();
2271 // This class is eagerly initialized during VM initialization, since we keep a refence
2272 // to one of the methods
2273 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2274 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2275 }
2276
2277 oop java_lang_reflect_Method::clazz(oop reflect) {
2278 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2279 return reflect->obj_field(clazz_offset);
2280 }
2281
2282 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2283 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2284 reflect->obj_field_put(clazz_offset, value);
2285 }
2286
2287 int java_lang_reflect_Method::slot(oop reflect) {
2288 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2289 return reflect->int_field(slot_offset);
2290 }
2291
2292 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2293 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2294 reflect->int_field_put(slot_offset, value);
2295 }
2296
2297 oop java_lang_reflect_Method::name(oop method) {
2298 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2299 return method->obj_field(name_offset);
2300 }
2301
2302 void java_lang_reflect_Method::set_name(oop method, oop value) {
2303 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2304 method->obj_field_put(name_offset, value);
2305 }
2306
2307 oop java_lang_reflect_Method::return_type(oop method) {
2308 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2309 return method->obj_field(returnType_offset);
2310 }
2311
2312 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2313 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2314 method->obj_field_put(returnType_offset, value);
2315 }
2316
2317 oop java_lang_reflect_Method::parameter_types(oop method) {
2318 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2319 return method->obj_field(parameterTypes_offset);
2320 }
2321
2322 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2323 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2324 method->obj_field_put(parameterTypes_offset, value);
2325 }
2326
2327 oop java_lang_reflect_Method::exception_types(oop method) {
2328 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2329 return method->obj_field(exceptionTypes_offset);
2330 }
2331
2332 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2333 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2334 method->obj_field_put(exceptionTypes_offset, value);
2335 }
2336
2337 int java_lang_reflect_Method::modifiers(oop method) {
2338 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2339 return method->int_field(modifiers_offset);
2340 }
2341
2342 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2343 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2344 method->int_field_put(modifiers_offset, value);
2345 }
2346
2347 bool java_lang_reflect_Method::has_signature_field() {
2348 return (signature_offset >= 0);
2349 }
2350
2351 oop java_lang_reflect_Method::signature(oop method) {
2352 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2353 assert(has_signature_field(), "signature field must be present");
2354 return method->obj_field(signature_offset);
2355 }
2356
2357 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2358 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2359 assert(has_signature_field(), "signature field must be present");
2360 method->obj_field_put(signature_offset, value);
2361 }
2362
2363 bool java_lang_reflect_Method::has_annotations_field() {
2364 return (annotations_offset >= 0);
2365 }
2366
2367 oop java_lang_reflect_Method::annotations(oop method) {
2368 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2369 assert(has_annotations_field(), "annotations field must be present");
2370 return method->obj_field(annotations_offset);
2371 }
2372
2373 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2374 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2375 assert(has_annotations_field(), "annotations field must be present");
2376 method->obj_field_put(annotations_offset, value);
2377 }
2378
2379 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2380 return (parameter_annotations_offset >= 0);
2381 }
2382
2383 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2384 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2385 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2386 return method->obj_field(parameter_annotations_offset);
2387 }
2388
2389 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2390 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2391 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2392 method->obj_field_put(parameter_annotations_offset, value);
2393 }
2394
2395 bool java_lang_reflect_Method::has_annotation_default_field() {
2396 return (annotation_default_offset >= 0);
2397 }
2398
2399 oop java_lang_reflect_Method::annotation_default(oop method) {
2400 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2401 assert(has_annotation_default_field(), "annotation default field must be present");
2402 return method->obj_field(annotation_default_offset);
2403 }
2404
2405 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2406 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2407 assert(has_annotation_default_field(), "annotation default field must be present");
2408 method->obj_field_put(annotation_default_offset, value);
2409 }
2410
2411 bool java_lang_reflect_Method::has_type_annotations_field() {
2412 return (type_annotations_offset >= 0);
2413 }
2414
2415 oop java_lang_reflect_Method::type_annotations(oop method) {
2416 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2417 assert(has_type_annotations_field(), "type_annotations field must be present");
2418 return method->obj_field(type_annotations_offset);
2419 }
2420
2421 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2422 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2423 assert(has_type_annotations_field(), "type_annotations field must be present");
2424 method->obj_field_put(type_annotations_offset, value);
2425 }
2426
2427 void java_lang_reflect_Constructor::compute_offsets() {
2428 Klass* k = SystemDictionary::reflect_Constructor_klass();
2429 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2430 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2431 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2432 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2433 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2434 // The generic signature and annotations fields are only present in 1.5
2435 signature_offset = -1;
2436 annotations_offset = -1;
2437 parameter_annotations_offset = -1;
2438 type_annotations_offset = -1;
2439 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2440 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2441 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2442 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2443 }
2444
2445 Handle java_lang_reflect_Constructor::create(TRAPS) {
2446 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2447 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2448 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2449 instanceKlassHandle klass (THREAD, k);
2450 // Ensure it is initialized
2451 klass->initialize(CHECK_NH);
2452 return klass->allocate_instance_handle(THREAD);
2453 }
2454
2455 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2456 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2457 return reflect->obj_field(clazz_offset);
2458 }
2459
2460 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2461 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2462 reflect->obj_field_put(clazz_offset, value);
2463 }
2464
2465 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2466 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2467 return constructor->obj_field(parameterTypes_offset);
2468 }
2469
2470 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2471 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2472 constructor->obj_field_put(parameterTypes_offset, value);
2473 }
2474
2475 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2476 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2477 return constructor->obj_field(exceptionTypes_offset);
2478 }
2479
2480 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2481 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2482 constructor->obj_field_put(exceptionTypes_offset, value);
2483 }
2484
2485 int java_lang_reflect_Constructor::slot(oop reflect) {
2486 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2487 return reflect->int_field(slot_offset);
2488 }
2489
2490 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2491 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2492 reflect->int_field_put(slot_offset, value);
2493 }
2494
2495 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2496 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2497 return constructor->int_field(modifiers_offset);
2498 }
2499
2500 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2501 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2502 constructor->int_field_put(modifiers_offset, value);
2503 }
2504
2505 bool java_lang_reflect_Constructor::has_signature_field() {
2506 return (signature_offset >= 0);
2507 }
2508
2509 oop java_lang_reflect_Constructor::signature(oop constructor) {
2510 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2511 assert(has_signature_field(), "signature field must be present");
2512 return constructor->obj_field(signature_offset);
2513 }
2514
2515 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2516 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2517 assert(has_signature_field(), "signature field must be present");
2518 constructor->obj_field_put(signature_offset, value);
2519 }
2520
2521 bool java_lang_reflect_Constructor::has_annotations_field() {
2522 return (annotations_offset >= 0);
2523 }
2524
2525 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2526 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2527 assert(has_annotations_field(), "annotations field must be present");
2528 return constructor->obj_field(annotations_offset);
2529 }
2530
2531 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2532 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2533 assert(has_annotations_field(), "annotations field must be present");
2534 constructor->obj_field_put(annotations_offset, value);
2535 }
2536
2537 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2538 return (parameter_annotations_offset >= 0);
2539 }
2540
2541 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2542 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2543 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2544 return method->obj_field(parameter_annotations_offset);
2545 }
2546
2547 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2548 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2549 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2550 method->obj_field_put(parameter_annotations_offset, value);
2551 }
2552
2553 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2554 return (type_annotations_offset >= 0);
2555 }
2556
2557 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2558 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2559 assert(has_type_annotations_field(), "type_annotations field must be present");
2560 return constructor->obj_field(type_annotations_offset);
2561 }
2562
2563 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2564 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2565 assert(has_type_annotations_field(), "type_annotations field must be present");
2566 constructor->obj_field_put(type_annotations_offset, value);
2567 }
2568
2569 void java_lang_reflect_Field::compute_offsets() {
2570 Klass* k = SystemDictionary::reflect_Field_klass();
2571 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2572 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2573 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2574 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2575 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2576 // The generic signature and annotations fields are only present in 1.5
2577 signature_offset = -1;
2578 annotations_offset = -1;
2579 type_annotations_offset = -1;
2580 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2581 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2582 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2583 }
2584
2585 Handle java_lang_reflect_Field::create(TRAPS) {
2586 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2587 Symbol* name = vmSymbols::java_lang_reflect_Field();
2588 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2589 instanceKlassHandle klass (THREAD, k);
2590 // Ensure it is initialized
2591 klass->initialize(CHECK_NH);
2592 return klass->allocate_instance_handle(THREAD);
2593 }
2594
2595 oop java_lang_reflect_Field::clazz(oop reflect) {
2596 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2597 return reflect->obj_field(clazz_offset);
2598 }
2599
2600 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2601 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2602 reflect->obj_field_put(clazz_offset, value);
2603 }
2604
2605 oop java_lang_reflect_Field::name(oop field) {
2606 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2607 return field->obj_field(name_offset);
2608 }
2609
2610 void java_lang_reflect_Field::set_name(oop field, oop value) {
2611 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2612 field->obj_field_put(name_offset, value);
2613 }
2614
2615 oop java_lang_reflect_Field::type(oop field) {
2616 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2617 return field->obj_field(type_offset);
2618 }
2619
2620 void java_lang_reflect_Field::set_type(oop field, oop value) {
2621 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2622 field->obj_field_put(type_offset, value);
2623 }
2624
2625 int java_lang_reflect_Field::slot(oop reflect) {
2626 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2627 return reflect->int_field(slot_offset);
2628 }
2629
2630 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2631 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2632 reflect->int_field_put(slot_offset, value);
2633 }
2634
2635 int java_lang_reflect_Field::modifiers(oop field) {
2636 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2637 return field->int_field(modifiers_offset);
2638 }
2639
2640 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2641 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2642 field->int_field_put(modifiers_offset, value);
2643 }
2644
2645 bool java_lang_reflect_Field::has_signature_field() {
2646 return (signature_offset >= 0);
2647 }
2648
2649 oop java_lang_reflect_Field::signature(oop field) {
2650 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2651 assert(has_signature_field(), "signature field must be present");
2652 return field->obj_field(signature_offset);
2653 }
2654
2655 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2656 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2657 assert(has_signature_field(), "signature field must be present");
2658 field->obj_field_put(signature_offset, value);
2659 }
2660
2661 bool java_lang_reflect_Field::has_annotations_field() {
2662 return (annotations_offset >= 0);
2663 }
2664
2665 oop java_lang_reflect_Field::annotations(oop field) {
2666 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2667 assert(has_annotations_field(), "annotations field must be present");
2668 return field->obj_field(annotations_offset);
2669 }
2670
2671 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2672 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2673 assert(has_annotations_field(), "annotations field must be present");
2674 field->obj_field_put(annotations_offset, value);
2675 }
2676
2677 bool java_lang_reflect_Field::has_type_annotations_field() {
2678 return (type_annotations_offset >= 0);
2679 }
2680
2681 oop java_lang_reflect_Field::type_annotations(oop field) {
2682 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2683 assert(has_type_annotations_field(), "type_annotations field must be present");
2684 return field->obj_field(type_annotations_offset);
2685 }
2686
2687 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2688 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2689 assert(has_type_annotations_field(), "type_annotations field must be present");
2690 field->obj_field_put(type_annotations_offset, value);
2691 }
2692
2693 void reflect_ConstantPool::compute_offsets() {
2694 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2695 // This null test can be removed post beta
2696 if (k != NULL) {
2697 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2698 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2699 }
2700 }
2701
2702 void java_lang_reflect_Parameter::compute_offsets() {
2703 Klass* k = SystemDictionary::reflect_Parameter_klass();
2704 if(NULL != k) {
2705 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2706 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2707 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2708 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2709 }
2710 }
2711
2712 Handle java_lang_reflect_Parameter::create(TRAPS) {
2713 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2714 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2715 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2716 instanceKlassHandle klass (THREAD, k);
2717 // Ensure it is initialized
2718 klass->initialize(CHECK_NH);
2719 return klass->allocate_instance_handle(THREAD);
2720 }
2721
2722 oop java_lang_reflect_Parameter::name(oop param) {
2723 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2724 return param->obj_field(name_offset);
2725 }
2726
2727 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2728 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2729 param->obj_field_put(name_offset, value);
2730 }
2731
2732 int java_lang_reflect_Parameter::modifiers(oop param) {
2733 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2734 return param->int_field(modifiers_offset);
2735 }
2736
2737 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2738 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2739 param->int_field_put(modifiers_offset, value);
2740 }
2741
2742 int java_lang_reflect_Parameter::index(oop param) {
2743 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2744 return param->int_field(index_offset);
2745 }
2746
2747 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2748 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2749 param->int_field_put(index_offset, value);
2750 }
2751
2752 oop java_lang_reflect_Parameter::executable(oop param) {
2753 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2754 return param->obj_field(executable_offset);
2755 }
2756
2757 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2758 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2759 param->obj_field_put(executable_offset, value);
2760 }
2761
2762
2763 int java_lang_reflect_Module::loader_offset;
2764 int java_lang_reflect_Module::name_offset;
2765 int java_lang_reflect_Module::_module_entry_offset = -1;
2766
2767 Handle java_lang_reflect_Module::create(Handle loader, Handle module_name, TRAPS) {
2768 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2769
2770 Symbol* name = vmSymbols::java_lang_reflect_Module();
2771 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2772 instanceKlassHandle klass (THREAD, k);
2773
2774 Handle jlrmh = klass->allocate_instance_handle(CHECK_NH);
2775 JavaValue result(T_VOID);
2776 JavaCalls::call_special(&result, jlrmh, KlassHandle(THREAD, klass()),
2777 vmSymbols::object_initializer_name(),
2778 vmSymbols::java_lang_reflect_module_init_signature(),
2779 loader, module_name, CHECK_NH);
2780 return jlrmh;
2781 }
2782
2783 void java_lang_reflect_Module::compute_offsets() {
2784 Klass* k = SystemDictionary::reflect_Module_klass();
2785 if(NULL != k) {
2786 compute_offset(loader_offset, k, vmSymbols::loader_name(), vmSymbols::classloader_signature());
2787 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2788 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2789 }
2790 }
2791
2792
2793 oop java_lang_reflect_Module::loader(oop module) {
2794 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2795 return module->obj_field(loader_offset);
2796 }
2797
2798 void java_lang_reflect_Module::set_loader(oop module, oop value) {
2799 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2800 module->obj_field_put(loader_offset, value);
2801 }
2802
2803 oop java_lang_reflect_Module::name(oop module) {
2804 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2805 return module->obj_field(name_offset);
2806 }
2807
2808 void java_lang_reflect_Module::set_name(oop module, oop value) {
2809 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2810 module->obj_field_put(name_offset, value);
2811 }
2812
2813 ModuleEntry* java_lang_reflect_Module::module_entry(oop module, TRAPS) {
2814 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
2815 assert(module != NULL, "module can't be null");
2816 assert(module->is_oop(), "module must be oop");
2817
2818 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
2819 if (module_entry == NULL) {
2820 // If the inject field containing the ModuleEntry* is null then return the
2821 // class loader's unnamed module.
2822 oop loader = java_lang_reflect_Module::loader(module);
2823 Handle h_loader = Handle(THREAD, loader);
2824 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL);
2825 return loader_cld->modules()->unnamed_module();
2826 }
2827 return module_entry;
2828 }
2829
2830 void java_lang_reflect_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
2831 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
2832 assert(module != NULL, "module can't be null");
2833 assert(module->is_oop(), "module must be oop");
2834 module->address_field_put(_module_entry_offset, (address)module_entry);
2835 }
2836
2837 Handle reflect_ConstantPool::create(TRAPS) {
2838 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2839 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2840 instanceKlassHandle klass (THREAD, k);
2841 // Ensure it is initialized
2842 klass->initialize(CHECK_NH);
2843 return klass->allocate_instance_handle(THREAD);
2844 }
2845
2846
2847 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2848 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2849 oop mirror = value->pool_holder()->java_mirror();
2850 // Save the mirror to get back the constant pool.
2851 reflect->obj_field_put(_oop_offset, mirror);
2852 }
2853
2854 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
2855 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2856
2857 oop mirror = reflect->obj_field(_oop_offset);
2858 Klass* k = java_lang_Class::as_Klass(mirror);
2859 assert(k->is_instance_klass(), "Must be");
2860
2861 // Get the constant pool back from the klass. Since class redefinition
2862 // merges the new constant pool into the old, this is essentially the
2863 // same constant pool as the original. If constant pool merging is
2864 // no longer done in the future, this will have to change to save
2865 // the original.
2866 return InstanceKlass::cast(k)->constants();
2867 }
2868
2869 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2870 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2871 // This null test can be removed post beta
2872 if (k != NULL) {
2873 compute_offset(_base_offset, k,
2874 vmSymbols::base_name(), vmSymbols::object_signature());
2875 }
2876 }
2877
2878 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2879 Klass* k = SystemDictionary::box_klass(type);
2880 if (k == NULL) return NULL;
2881 instanceKlassHandle h (THREAD, k);
2882 if (!h->is_initialized()) h->initialize(CHECK_0);
2883 return h->allocate_instance(THREAD);
2884 }
2885
2886
2887 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2888 oop box = initialize_and_allocate(type, CHECK_0);
2889 if (box == NULL) return NULL;
2890 switch (type) {
2891 case T_BOOLEAN:
2892 box->bool_field_put(value_offset, value->z);
2893 break;
2894 case T_CHAR:
2895 box->char_field_put(value_offset, value->c);
2896 break;
2897 case T_FLOAT:
2898 box->float_field_put(value_offset, value->f);
2899 break;
2900 case T_DOUBLE:
2901 box->double_field_put(long_value_offset, value->d);
2902 break;
2903 case T_BYTE:
2904 box->byte_field_put(value_offset, value->b);
2905 break;
2906 case T_SHORT:
2907 box->short_field_put(value_offset, value->s);
2908 break;
2909 case T_INT:
2910 box->int_field_put(value_offset, value->i);
2911 break;
2912 case T_LONG:
2913 box->long_field_put(long_value_offset, value->j);
2914 break;
2915 default:
2916 return NULL;
2917 }
2918 return box;
2919 }
2920
2921
2922 BasicType java_lang_boxing_object::basic_type(oop box) {
2923 if (box == NULL) return T_ILLEGAL;
2924 BasicType type = SystemDictionary::box_klass_type(box->klass());
2925 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2926 return T_ILLEGAL;
2927 return type;
2928 }
2929
2930
2931 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2932 BasicType type = SystemDictionary::box_klass_type(box->klass());
2933 switch (type) {
2934 case T_BOOLEAN:
2935 value->z = box->bool_field(value_offset);
2936 break;
2937 case T_CHAR:
2938 value->c = box->char_field(value_offset);
2939 break;
2940 case T_FLOAT:
2941 value->f = box->float_field(value_offset);
2942 break;
2943 case T_DOUBLE:
2944 value->d = box->double_field(long_value_offset);
2945 break;
2946 case T_BYTE:
2947 value->b = box->byte_field(value_offset);
2948 break;
2949 case T_SHORT:
2950 value->s = box->short_field(value_offset);
2951 break;
2952 case T_INT:
2953 value->i = box->int_field(value_offset);
2954 break;
2955 case T_LONG:
2956 value->j = box->long_field(long_value_offset);
2957 break;
2958 default:
2959 return T_ILLEGAL;
2960 } // end switch
2961 return type;
2962 }
2963
2964
2965 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2966 BasicType type = SystemDictionary::box_klass_type(box->klass());
2967 switch (type) {
2968 case T_BOOLEAN:
2969 box->bool_field_put(value_offset, value->z);
2970 break;
2971 case T_CHAR:
2972 box->char_field_put(value_offset, value->c);
2973 break;
2974 case T_FLOAT:
2975 box->float_field_put(value_offset, value->f);
2976 break;
2977 case T_DOUBLE:
2978 box->double_field_put(long_value_offset, value->d);
2979 break;
2980 case T_BYTE:
2981 box->byte_field_put(value_offset, value->b);
2982 break;
2983 case T_SHORT:
2984 box->short_field_put(value_offset, value->s);
2985 break;
2986 case T_INT:
2987 box->int_field_put(value_offset, value->i);
2988 break;
2989 case T_LONG:
2990 box->long_field_put(long_value_offset, value->j);
2991 break;
2992 default:
2993 return T_ILLEGAL;
2994 } // end switch
2995 return type;
2996 }
2997
2998
2999 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3000 switch (type) {
3001 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3002 case T_CHAR: st->print("%d", value->c); break;
3003 case T_BYTE: st->print("%d", value->b); break;
3004 case T_SHORT: st->print("%d", value->s); break;
3005 case T_INT: st->print("%d", value->i); break;
3006 case T_LONG: st->print(INT64_FORMAT, value->j); break;
3007 case T_FLOAT: st->print("%f", value->f); break;
3008 case T_DOUBLE: st->print("%lf", value->d); break;
3009 default: st->print("type %d?", type); break;
3010 }
3011 }
3012
3013
3014 // Support for java_lang_ref_Reference
3015 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
3016 InstanceKlass* ik = SystemDictionary::Reference_klass();
3017 address addr = ik->static_field_addr(static_lock_offset);
3018 return (HeapWord*) addr;
3019 }
3020
3021 oop java_lang_ref_Reference::pending_list_lock() {
3022 InstanceKlass* ik = SystemDictionary::Reference_klass();
3023 address addr = ik->static_field_addr(static_lock_offset);
3024 if (UseCompressedOops) {
3025 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
3026 } else {
3027 return oopDesc::load_decode_heap_oop((oop*)addr);
3028 }
3029 }
3030
3031 HeapWord *java_lang_ref_Reference::pending_list_addr() {
3032 InstanceKlass* ik = SystemDictionary::Reference_klass();
3033 address addr = ik->static_field_addr(static_pending_offset);
3034 // XXX This might not be HeapWord aligned, almost rather be char *.
3035 return (HeapWord*)addr;
3036 }
3037
3038 oop java_lang_ref_Reference::pending_list() {
3039 char *addr = (char *)pending_list_addr();
3040 if (UseCompressedOops) {
3041 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
3042 } else {
3043 return oopDesc::load_decode_heap_oop((oop*)addr);
3044 }
3045 }
3046
3047
3048 // Support for java_lang_ref_SoftReference
3049
3050 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3051 return ref->long_field(timestamp_offset);
3052 }
3053
3054 jlong java_lang_ref_SoftReference::clock() {
3055 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3056 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3057 return *offset;
3058 }
3059
3060 void java_lang_ref_SoftReference::set_clock(jlong value) {
3061 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3062 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3063 *offset = value;
3064 }
3065
3066 // Support for java_lang_invoke_DirectMethodHandle
3067
3068 int java_lang_invoke_DirectMethodHandle::_member_offset;
3069
3070 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3071 oop member_name = NULL;
3072 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
3073 assert(is_dmh, "a DirectMethodHandle oop is expected");
3074 if (is_dmh) {
3075 member_name = dmh->obj_field(member_offset_in_bytes());
3076 }
3077 return member_name;
3078 }
3079
3080 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3081 Klass* klass_oop = SystemDictionary::DirectMethodHandle_klass();
3082 if (klass_oop != NULL) {
3083 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
3084 }
3085 }
3086
3087 // Support for java_lang_invoke_MethodHandle
3088
3089 int java_lang_invoke_MethodHandle::_type_offset;
3090 int java_lang_invoke_MethodHandle::_form_offset;
3091
3092 int java_lang_invoke_MemberName::_clazz_offset;
3093 int java_lang_invoke_MemberName::_name_offset;
3094 int java_lang_invoke_MemberName::_type_offset;
3095 int java_lang_invoke_MemberName::_flags_offset;
3096 int java_lang_invoke_MemberName::_vmtarget_offset;
3097 int java_lang_invoke_MemberName::_vmloader_offset;
3098 int java_lang_invoke_MemberName::_vmindex_offset;
3099
3100 int java_lang_invoke_LambdaForm::_vmentry_offset;
3101
3102 void java_lang_invoke_MethodHandle::compute_offsets() {
3103 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
3104 if (klass_oop != NULL) {
3105 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
3106 compute_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
3107 }
3108 }
3109
3110 void java_lang_invoke_MemberName::compute_offsets() {
3111 Klass* klass_oop = SystemDictionary::MemberName_klass();
3112 if (klass_oop != NULL) {
3113 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
3114 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
3115 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
3116 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
3117 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3118 }
3119 }
3120
3121 void java_lang_invoke_LambdaForm::compute_offsets() {
3122 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
3123 if (klass_oop != NULL) {
3124 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
3125 }
3126 }
3127
3128 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3129 return obj != NULL && is_subclass(obj->klass());
3130 }
3131
3132
3133 oop java_lang_invoke_MethodHandle::type(oop mh) {
3134 return mh->obj_field(_type_offset);
3135 }
3136
3137 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3138 mh->obj_field_put(_type_offset, mtype);
3139 }
3140
3141 oop java_lang_invoke_MethodHandle::form(oop mh) {
3142 assert(_form_offset != 0, "");
3143 return mh->obj_field(_form_offset);
3144 }
3145
3146 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3147 assert(_form_offset != 0, "");
3148 mh->obj_field_put(_form_offset, lform);
3149 }
3150
3151 /// MemberName accessors
3152
3153 oop java_lang_invoke_MemberName::clazz(oop mname) {
3154 assert(is_instance(mname), "wrong type");
3155 return mname->obj_field(_clazz_offset);
3156 }
3157
3158 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3159 assert(is_instance(mname), "wrong type");
3160 mname->obj_field_put(_clazz_offset, clazz);
3161 }
3162
3163 oop java_lang_invoke_MemberName::name(oop mname) {
3164 assert(is_instance(mname), "wrong type");
3165 return mname->obj_field(_name_offset);
3166 }
3167
3168 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3169 assert(is_instance(mname), "wrong type");
3170 mname->obj_field_put(_name_offset, name);
3171 }
3172
3173 oop java_lang_invoke_MemberName::type(oop mname) {
3174 assert(is_instance(mname), "wrong type");
3175 return mname->obj_field(_type_offset);
3176 }
3177
3178 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3179 assert(is_instance(mname), "wrong type");
3180 mname->obj_field_put(_type_offset, type);
3181 }
3182
3183 int java_lang_invoke_MemberName::flags(oop mname) {
3184 assert(is_instance(mname), "wrong type");
3185 return mname->int_field(_flags_offset);
3186 }
3187
3188 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3189 assert(is_instance(mname), "wrong type");
3190 mname->int_field_put(_flags_offset, flags);
3191 }
3192
3193 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
3194 assert(is_instance(mname), "wrong type");
3195 return (Metadata*)mname->address_field(_vmtarget_offset);
3196 }
3197
3198 bool java_lang_invoke_MemberName::is_method(oop mname) {
3199 assert(is_instance(mname), "must be MemberName");
3200 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3201 }
3202
3203 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
3204 assert(is_instance(mname), "wrong type");
3205 // check the type of the vmtarget
3206 oop dependency = NULL;
3207 if (ref != NULL) {
3208 switch (flags(mname) & (MN_IS_METHOD |
3209 MN_IS_CONSTRUCTOR |
3210 MN_IS_FIELD)) {
3211 case MN_IS_METHOD:
3212 case MN_IS_CONSTRUCTOR:
3213 assert(ref->is_method(), "should be a method");
3214 dependency = ((Method*)ref)->method_holder()->java_mirror();
3215 break;
3216 case MN_IS_FIELD:
3217 assert(ref->is_klass(), "should be a class");
3218 dependency = ((Klass*)ref)->java_mirror();
3219 break;
3220 default:
3221 ShouldNotReachHere();
3222 }
3223 }
3224 mname->address_field_put(_vmtarget_offset, (address)ref);
3225 // Add a reference to the loader (actually mirror because anonymous classes will not have
3226 // distinct loaders) to ensure the metadata is kept alive
3227 // This mirror may be different than the one in clazz field.
3228 mname->obj_field_put(_vmloader_offset, dependency);
3229 }
3230
3231 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3232 assert(is_instance(mname), "wrong type");
3233 return (intptr_t) mname->address_field(_vmindex_offset);
3234 }
3235
3236 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3237 assert(is_instance(mname), "wrong type");
3238 mname->address_field_put(_vmindex_offset, (address) index);
3239 }
3240
3241 bool java_lang_invoke_MemberName::equals(oop mn1, oop mn2) {
3242 if (mn1 == mn2) {
3243 return true;
3244 }
3245 return (vmtarget(mn1) == vmtarget(mn2) && flags(mn1) == flags(mn2) &&
3246 vmindex(mn1) == vmindex(mn2) &&
3247 clazz(mn1) == clazz(mn2));
3248 }
3249
3250 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3251 assert(is_instance(lform), "wrong type");
3252 return lform->obj_field(_vmentry_offset);
3253 }
3254
3255
3256 // Support for java_lang_invoke_MethodType
3257
3258 int java_lang_invoke_MethodType::_rtype_offset;
3259 int java_lang_invoke_MethodType::_ptypes_offset;
3260
3261 void java_lang_invoke_MethodType::compute_offsets() {
3262 Klass* k = SystemDictionary::MethodType_klass();
3263 if (k != NULL) {
3264 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
3265 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
3266 }
3267 }
3268
3269 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3270 st->print("(");
3271 objArrayOop pts = ptypes(mt);
3272 for (int i = 0, limit = pts->length(); i < limit; i++) {
3273 java_lang_Class::print_signature(pts->obj_at(i), st);
3274 }
3275 st->print(")");
3276 java_lang_Class::print_signature(rtype(mt), st);
3277 }
3278
3279 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3280 ResourceMark rm;
3281 stringStream buffer(128);
3282 print_signature(mt, &buffer);
3283 const char* sigstr = buffer.base();
3284 int siglen = (int) buffer.size();
3285 Symbol *name;
3286 if (!intern_if_not_found) {
3287 name = SymbolTable::probe(sigstr, siglen);
3288 } else {
3289 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3290 }
3291 return name;
3292 }
3293
3294 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3295 if (mt1 == mt2)
3296 return true;
3297 if (rtype(mt1) != rtype(mt2))
3298 return false;
3299 if (ptype_count(mt1) != ptype_count(mt2))
3300 return false;
3301 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3302 if (ptype(mt1, i) != ptype(mt2, i))
3303 return false;
3304 }
3305 return true;
3306 }
3307
3308 oop java_lang_invoke_MethodType::rtype(oop mt) {
3309 assert(is_instance(mt), "must be a MethodType");
3310 return mt->obj_field(_rtype_offset);
3311 }
3312
3313 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3314 assert(is_instance(mt), "must be a MethodType");
3315 return (objArrayOop) mt->obj_field(_ptypes_offset);
3316 }
3317
3318 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3319 return ptypes(mt)->obj_at(idx);
3320 }
3321
3322 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3323 return ptypes(mt)->length();
3324 }
3325
3326 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3327 objArrayOop pts = ptypes(mt);
3328 int count = pts->length();
3329 int slots = 0;
3330 for (int i = 0; i < count; i++) {
3331 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3332 slots += type2size[bt];
3333 }
3334 return slots;
3335 }
3336
3337 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3338 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3339 return type2size[bt];
3340 }
3341
3342
3343 // Support for java_lang_invoke_CallSite
3344
3345 int java_lang_invoke_CallSite::_target_offset;
3346 int java_lang_invoke_CallSite::_context_offset;
3347
3348 void java_lang_invoke_CallSite::compute_offsets() {
3349 Klass* k = SystemDictionary::CallSite_klass();
3350 if (k != NULL) {
3351 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
3352 compute_offset(_context_offset, k, vmSymbols::context_name(),
3353 vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
3354 }
3355 }
3356
3357 oop java_lang_invoke_CallSite::context(oop call_site) {
3358 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3359
3360 oop dep_oop = call_site->obj_field(_context_offset);
3361 return dep_oop;
3362 }
3363
3364 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3365
3366 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3367
3368 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3369 Klass* k = SystemDictionary::Context_klass();
3370 if (k != NULL) {
3371 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3372 }
3373 }
3374
3375 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3376 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3377 intptr_t* vmdeps_addr = (intptr_t*)call_site->address_field_addr(_vmdependencies_offset);
3378 DependencyContext dep_ctx(vmdeps_addr);
3379 return dep_ctx;
3380 }
3381
3382 // Support for java_security_AccessControlContext
3383
3384 int java_security_AccessControlContext::_context_offset = 0;
3385 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3386 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3387 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3388
3389 void java_security_AccessControlContext::compute_offsets() {
3390 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3391 fieldDescriptor fd;
3392 InstanceKlass* ik = SystemDictionary::AccessControlContext_klass();
3393
3394 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
3395 fatal("Invalid layout of java.security.AccessControlContext");
3396 }
3397 _context_offset = fd.offset();
3398
3399 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
3400 fatal("Invalid layout of java.security.AccessControlContext");
3401 }
3402 _privilegedContext_offset = fd.offset();
3403
3404 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
3405 fatal("Invalid layout of java.security.AccessControlContext");
3406 }
3407 _isPrivileged_offset = fd.offset();
3408
3409 // The offset may not be present for bootstrapping with older JDK.
3410 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
3411 _isAuthorized_offset = fd.offset();
3412 }
3413 }
3414
3415
3416 bool java_security_AccessControlContext::is_authorized(Handle context) {
3417 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3418 assert(_isAuthorized_offset != -1, "should be set");
3419 return context->bool_field(_isAuthorized_offset) != 0;
3420 }
3421
3422 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3423 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3424 // Ensure klass is initialized
3425 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3426 // Allocate result
3427 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3428 // Fill in values
3429 result->obj_field_put(_context_offset, context());
3430 result->obj_field_put(_privilegedContext_offset, privileged_context());
3431 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3432 // whitelist AccessControlContexts created by the JVM if present
3433 if (_isAuthorized_offset != -1) {
3434 result->bool_field_put(_isAuthorized_offset, true);
3435 }
3436 return result;
3437 }
3438
3439
3440 // Support for java_lang_ClassLoader
3441
3442 bool java_lang_ClassLoader::offsets_computed = false;
3443 int java_lang_ClassLoader::_loader_data_offset = -1;
3444 int java_lang_ClassLoader::parallelCapable_offset = -1;
3445 int java_lang_ClassLoader::unnamedModule_offset = -1;
3446
3447 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
3448 assert(loader != NULL && loader->is_oop(), "loader must be oop");
3449 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
3450 }
3451
3452 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3453 return *java_lang_ClassLoader::loader_data_addr(loader);
3454 }
3455
3456 void java_lang_ClassLoader::compute_offsets() {
3457 assert(!offsets_computed, "offsets should be initialized only once");
3458 offsets_computed = true;
3459
3460 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
3461 Klass* k1 = SystemDictionary::ClassLoader_klass();
3462 compute_optional_offset(parallelCapable_offset,
3463 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
3464
3465 compute_offset(unnamedModule_offset,
3466 k1, vmSymbols::unnamedModule_name(), vmSymbols::module_signature());
3467
3468 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3469 }
3470
3471 oop java_lang_ClassLoader::parent(oop loader) {
3472 assert(is_instance(loader), "loader must be oop");
3473 return loader->obj_field(parent_offset);
3474 }
3475
3476 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
3477 assert(is_instance(loader), "loader must be oop");
3478 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
3479 oop acl = loader;
3480 debug_only(jint loop_count = 0);
3481 // This loop taken verbatim from ClassLoader.java:
3482 do {
3483 acl = parent(acl);
3484 if (cl == acl) {
3485 return true;
3486 }
3487 assert(++loop_count > 0, "loop_count overflow");
3488 } while (acl != NULL);
3489 return false;
3490 }
3491
3492 bool java_lang_ClassLoader::is_instance(oop obj) {
3493 return obj != NULL && is_subclass(obj->klass());
3494 }
3495
3496
3497 // For class loader classes, parallelCapable defined
3498 // based on non-null field
3499 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
3500 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
3501 if (parallelCapable_offset == -1) {
3502 // Default for backward compatibility is false
3503 return false;
3504 }
3505 return (class_loader->obj_field(parallelCapable_offset) != NULL);
3506 }
3507
3508 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
3509 // Fix for 4474172; see evaluation for more details
3510 loader = non_reflection_class_loader(loader);
3511
3512 oop cl = SystemDictionary::java_system_loader();
3513 while(cl != NULL) {
3514 if (cl == loader) return true;
3515 cl = parent(cl);
3516 }
3517 return false;
3518 }
3519
3520 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
3521 if (loader != NULL) {
3522 // See whether this is one of the class loaders associated with
3523 // the generated bytecodes for reflection, and if so, "magically"
3524 // delegate to its parent to prevent class loading from occurring
3525 // in places where applications using reflection didn't expect it.
3526 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
3527 // This might be null in non-1.4 JDKs
3528 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
3529 return parent(loader);
3530 }
3531 }
3532 return loader;
3533 }
3534
3535 oop java_lang_ClassLoader::unnamedModule(oop loader) {
3536 assert(is_instance(loader), "loader must be oop");
3537 return loader->obj_field(unnamedModule_offset);
3538 }
3539
3540 // Support for java_lang_System
3541 int java_lang_System::in_offset_in_bytes() {
3542 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
3543 }
3544
3545
3546 int java_lang_System::out_offset_in_bytes() {
3547 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
3548 }
3549
3550
3551 int java_lang_System::err_offset_in_bytes() {
3552 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
3553 }
3554
3555
3556 bool java_lang_System::has_security_manager() {
3557 InstanceKlass* ik = SystemDictionary::System_klass();
3558 address addr = ik->static_field_addr(static_security_offset);
3559 if (UseCompressedOops) {
3560 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
3561 } else {
3562 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
3563 }
3564 }
3565
3566 int java_lang_Class::_klass_offset;
3567 int java_lang_Class::_array_klass_offset;
3568 int java_lang_Class::_oop_size_offset;
3569 int java_lang_Class::_static_oop_field_count_offset;
3570 int java_lang_Class::_class_loader_offset;
3571 int java_lang_Class::_module_offset;
3572 int java_lang_Class::_protection_domain_offset;
3573 int java_lang_Class::_component_mirror_offset;
3574 int java_lang_Class::_init_lock_offset;
3575 int java_lang_Class::_signers_offset;
3576 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
3577 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
3578 int java_lang_Throwable::backtrace_offset;
3579 int java_lang_Throwable::detailMessage_offset;
3580 int java_lang_Throwable::stackTrace_offset;
3581 int java_lang_Throwable::depth_offset;
3582 int java_lang_Throwable::static_unassigned_stacktrace_offset;
3583 int java_lang_reflect_AccessibleObject::override_offset;
3584 int java_lang_reflect_Method::clazz_offset;
3585 int java_lang_reflect_Method::name_offset;
3586 int java_lang_reflect_Method::returnType_offset;
3587 int java_lang_reflect_Method::parameterTypes_offset;
3588 int java_lang_reflect_Method::exceptionTypes_offset;
3589 int java_lang_reflect_Method::slot_offset;
3590 int java_lang_reflect_Method::modifiers_offset;
3591 int java_lang_reflect_Method::signature_offset;
3592 int java_lang_reflect_Method::annotations_offset;
3593 int java_lang_reflect_Method::parameter_annotations_offset;
3594 int java_lang_reflect_Method::annotation_default_offset;
3595 int java_lang_reflect_Method::type_annotations_offset;
3596 int java_lang_reflect_Constructor::clazz_offset;
3597 int java_lang_reflect_Constructor::parameterTypes_offset;
3598 int java_lang_reflect_Constructor::exceptionTypes_offset;
3599 int java_lang_reflect_Constructor::slot_offset;
3600 int java_lang_reflect_Constructor::modifiers_offset;
3601 int java_lang_reflect_Constructor::signature_offset;
3602 int java_lang_reflect_Constructor::annotations_offset;
3603 int java_lang_reflect_Constructor::parameter_annotations_offset;
3604 int java_lang_reflect_Constructor::type_annotations_offset;
3605 int java_lang_reflect_Field::clazz_offset;
3606 int java_lang_reflect_Field::name_offset;
3607 int java_lang_reflect_Field::type_offset;
3608 int java_lang_reflect_Field::slot_offset;
3609 int java_lang_reflect_Field::modifiers_offset;
3610 int java_lang_reflect_Field::signature_offset;
3611 int java_lang_reflect_Field::annotations_offset;
3612 int java_lang_reflect_Field::type_annotations_offset;
3613 int java_lang_reflect_Parameter::name_offset;
3614 int java_lang_reflect_Parameter::modifiers_offset;
3615 int java_lang_reflect_Parameter::index_offset;
3616 int java_lang_reflect_Parameter::executable_offset;
3617 int java_lang_boxing_object::value_offset;
3618 int java_lang_boxing_object::long_value_offset;
3619 int java_lang_ref_Reference::referent_offset;
3620 int java_lang_ref_Reference::queue_offset;
3621 int java_lang_ref_Reference::next_offset;
3622 int java_lang_ref_Reference::discovered_offset;
3623 int java_lang_ref_Reference::static_lock_offset;
3624 int java_lang_ref_Reference::static_pending_offset;
3625 int java_lang_ref_Reference::number_of_fake_oop_fields;
3626 int java_lang_ref_SoftReference::timestamp_offset;
3627 int java_lang_ref_SoftReference::static_clock_offset;
3628 int java_lang_ClassLoader::parent_offset;
3629 int java_lang_System::static_in_offset;
3630 int java_lang_System::static_out_offset;
3631 int java_lang_System::static_err_offset;
3632 int java_lang_System::static_security_offset;
3633 int java_lang_StackTraceElement::declaringClass_offset;
3634 int java_lang_StackTraceElement::methodName_offset;
3635 int java_lang_StackTraceElement::fileName_offset;
3636 int java_lang_StackTraceElement::lineNumber_offset;
3637 int java_lang_StackTraceElement::moduleName_offset;
3638 int java_lang_StackTraceElement::moduleVersion_offset;
3639 int java_lang_StackFrameInfo::_declaringClass_offset;
3640 int java_lang_StackFrameInfo::_memberName_offset;
3641 int java_lang_StackFrameInfo::_bci_offset;
3642 int java_lang_StackFrameInfo::_version_offset;
3643 int java_lang_LiveStackFrameInfo::_monitors_offset;
3644 int java_lang_LiveStackFrameInfo::_locals_offset;
3645 int java_lang_LiveStackFrameInfo::_operands_offset;
3646 int java_lang_AssertionStatusDirectives::classes_offset;
3647 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3648 int java_lang_AssertionStatusDirectives::packages_offset;
3649 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3650 int java_lang_AssertionStatusDirectives::deflt_offset;
3651 int java_nio_Buffer::_limit_offset;
3652 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3653 int reflect_ConstantPool::_oop_offset;
3654 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3655
3656
3657 // Support for java_lang_StackTraceElement
3658
3659 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3660 element->obj_field_put(fileName_offset, value);
3661 }
3662
3663 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3664 element->obj_field_put(declaringClass_offset, value);
3665 }
3666
3667 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3668 element->obj_field_put(methodName_offset, value);
3669 }
3670
3671 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3672 element->int_field_put(lineNumber_offset, value);
3673 }
3674
3675 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
3676 element->obj_field_put(moduleName_offset, value);
3677 }
3678
3679 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
3680 element->obj_field_put(moduleVersion_offset, value);
3681 }
3682
3683 // Support for java_lang_StackFrameInfo
3684 void java_lang_StackFrameInfo::set_declaringClass(oop element, oop value) {
3685 element->obj_field_put(_declaringClass_offset, value);
3686 }
3687
3688 void java_lang_StackFrameInfo::set_version(oop element, short value) {
3689 element->short_field_put(_version_offset, value);
3690 }
3691
3692 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
3693 element->int_field_put(_bci_offset, value);
3694 }
3695
3696 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
3697 element->obj_field_put(_monitors_offset, value);
3698 }
3699
3700 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
3701 element->obj_field_put(_locals_offset, value);
3702 }
3703
3704 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
3705 element->obj_field_put(_operands_offset, value);
3706 }
3707
3708 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3709
3710 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3711 o->obj_field_put(classes_offset, val);
3712 }
3713
3714 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3715 o->obj_field_put(classEnabled_offset, val);
3716 }
3717
3718 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3719 o->obj_field_put(packages_offset, val);
3720 }
3721
3722 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3723 o->obj_field_put(packageEnabled_offset, val);
3724 }
3725
3726 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3727 o->bool_field_put(deflt_offset, val);
3728 }
3729
3730
3731 // Support for intrinsification of java.nio.Buffer.checkIndex
3732 int java_nio_Buffer::limit_offset() {
3733 return _limit_offset;
3734 }
3735
3736
3737 void java_nio_Buffer::compute_offsets() {
3738 Klass* k = SystemDictionary::nio_Buffer_klass();
3739 assert(k != NULL, "must be loaded in 1.4+");
3740 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3741 }
3742
3743 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3744 if (_owner_offset != 0) return;
3745
3746 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3747 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3748 compute_offset(_owner_offset, k,
3749 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3750 }
3751
3752 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3753 assert(_owner_offset != 0, "Must be initialized");
3754 return obj->obj_field(_owner_offset);
3755 }
3756
3757 // Compute hard-coded offsets
3758 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3759 // are not available to determine the offset_of_static_fields.
3760 void JavaClasses::compute_hard_coded_offsets() {
3761 const int x = heapOopSize;
3762 const int header = instanceOopDesc::base_offset_in_bytes();
3763
3764 // Throwable Class
3765 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3766 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3767 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3768 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3769
3770 // java_lang_boxing_object
3771 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3772 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3773
3774 // java_lang_ref_Reference:
3775 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3776 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3777 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3778 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3779 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3780 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3781 // Artificial fields for java_lang_ref_Reference
3782 // The first field is for the discovered field added in 1.4
3783 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3784
3785 // java_lang_ref_SoftReference Class
3786 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3787 // Don't multiply static fields because they are always in wordSize units
3788 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3789
3790 // java_lang_ClassLoader
3791 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3792
3793 // java_lang_System
3794 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3795 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3796 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3797 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3798
3799 // java_lang_StackTraceElement
3800 java_lang_StackTraceElement::moduleName_offset = java_lang_StackTraceElement::hc_moduleName_offset * x + header;
3801 java_lang_StackTraceElement::moduleVersion_offset = java_lang_StackTraceElement::hc_moduleVersion_offset * x + header;
3802 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3803 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3804 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3805 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3806 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3807 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3808 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3809 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3810 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3811
3812 }
3813
3814
3815 // Compute non-hard-coded field offsets of all the classes in this file
3816 void JavaClasses::compute_offsets() {
3817 // java_lang_Class::compute_offsets was called earlier in bootstrap
3818 java_lang_ClassLoader::compute_offsets();
3819 java_lang_Throwable::compute_offsets();
3820 java_lang_Thread::compute_offsets();
3821 java_lang_ThreadGroup::compute_offsets();
3822 java_lang_invoke_MethodHandle::compute_offsets();
3823 java_lang_invoke_DirectMethodHandle::compute_offsets();
3824 java_lang_invoke_MemberName::compute_offsets();
3825 java_lang_invoke_LambdaForm::compute_offsets();
3826 java_lang_invoke_MethodType::compute_offsets();
3827 java_lang_invoke_CallSite::compute_offsets();
3828 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
3829 java_security_AccessControlContext::compute_offsets();
3830 // Initialize reflection classes. The layouts of these classes
3831 // changed with the new reflection implementation in JDK 1.4, and
3832 // since the Universe doesn't know what JDK version it is until this
3833 // point we defer computation of these offsets until now.
3834 java_lang_reflect_AccessibleObject::compute_offsets();
3835 java_lang_reflect_Method::compute_offsets();
3836 java_lang_reflect_Constructor::compute_offsets();
3837 java_lang_reflect_Field::compute_offsets();
3838 java_nio_Buffer::compute_offsets();
3839 reflect_ConstantPool::compute_offsets();
3840 reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3841 java_lang_reflect_Parameter::compute_offsets();
3842 java_lang_reflect_Module::compute_offsets();
3843 java_lang_StackFrameInfo::compute_offsets();
3844 java_lang_LiveStackFrameInfo::compute_offsets();
3845
3846 // generated interpreter code wants to know about the offsets we just computed:
3847 AbstractAssembler::update_delayed_values();
3848 }
3849
3850 #ifndef PRODUCT
3851
3852 // These functions exist to assert the validity of hard-coded field offsets to guard
3853 // against changes in the class files
3854
3855 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3856 EXCEPTION_MARK;
3857 fieldDescriptor fd;
3858 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3859 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3860 instanceKlassHandle h_klass (THREAD, k);
3861 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3862 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3863 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3864 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3865 return false;
3866 }
3867 if (fd.is_static()) {
3868 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3869 return false;
3870 }
3871 if (fd.offset() == hardcoded_offset ) {
3872 return true;
3873 } else {
3874 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3875 klass_name, field_name, hardcoded_offset, fd.offset());
3876 return false;
3877 }
3878 }
3879
3880
3881 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3882 EXCEPTION_MARK;
3883 fieldDescriptor fd;
3884 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3885 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3886 instanceKlassHandle h_klass (THREAD, k);
3887 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3888 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3889 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3890 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3891 return false;
3892 }
3893 if (!fd.is_static()) {
3894 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3895 return false;
3896 }
3897 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3898 return true;
3899 } else {
3900 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());
3901 return false;
3902 }
3903 }
3904
3905
3906 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3907 EXCEPTION_MARK;
3908 fieldDescriptor fd;
3909 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3910 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3911 instanceKlassHandle h_klass (THREAD, k);
3912 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3913 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3914 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3915 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3916 return false;
3917 }
3918 if (!fd.is_static() || !fd.has_initial_value()) {
3919 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3920 return false;
3921 }
3922 if (!fd.initial_value_tag().is_int()) {
3923 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3924 return false;
3925 }
3926 jint field_value = fd.int_initial_value();
3927 if (field_value == hardcoded_constant) {
3928 return true;
3929 } else {
3930 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);
3931 return false;
3932 }
3933 }
3934
3935
3936 // Check the hard-coded field offsets of all the classes in this file
3937
3938 void JavaClasses::check_offsets() {
3939 bool valid = true;
3940 HandleMark hm;
3941
3942 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3943 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3944
3945 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3946 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3947
3948 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3949 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3950
3951 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3952 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3953
3954 // java.lang.String
3955
3956 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[B");
3957 if (java_lang_String::has_hash_field()) {
3958 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3959 }
3960 if (java_lang_String::has_coder_field()) {
3961 CHECK_OFFSET("java/lang/String", java_lang_String, coder, "B");
3962 }
3963
3964 // java.lang.Class
3965
3966 // Fake fields
3967 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3968 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3969
3970 // java.lang.Throwable
3971
3972 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3973 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3974 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3975 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, depth, "I");
3976
3977 // Boxed primitive objects (java_lang_boxing_object)
3978
3979 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3980 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3981 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3982 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3983 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3984 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3985 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3986 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3987
3988 // java.lang.ClassLoader
3989
3990 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
3991
3992 // java.lang.System
3993
3994 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
3995 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
3996 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
3997 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
3998
3999 // java.lang.StackTraceElement
4000
4001 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
4002 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
4003 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
4004 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
4005
4006 // java.lang.ref.Reference
4007
4008 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4009 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4010 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4011 // Fake field
4012 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4013 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
4014 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
4015
4016 // java.lang.ref.SoftReference
4017
4018 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
4019 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
4020
4021 // java.lang.AssertionStatusDirectives
4022 //
4023 // The CheckAssertionStatusDirectives boolean can be removed from here and
4024 // globals.hpp after the AssertionStatusDirectives class has been integrated
4025 // into merlin "for some time." Without it, the vm will fail with early
4026 // merlin builds.
4027
4028 if (CheckAssertionStatusDirectives) {
4029 const char* nm = "java/lang/AssertionStatusDirectives";
4030 const char* sig = "[Ljava/lang/String;";
4031 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
4032 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
4033 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
4034 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
4035 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
4036 }
4037
4038 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4039 }
4040
4041 #endif // PRODUCT
4042
4043 int InjectedField::compute_offset() {
4044 InstanceKlass* ik = InstanceKlass::cast(klass());
4045 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4046 if (!may_be_java && !fs.access_flags().is_internal()) {
4047 // Only look at injected fields
4048 continue;
4049 }
4050 if (fs.name() == name() && fs.signature() == signature()) {
4051 return fs.offset();
4052 }
4053 }
4054 ResourceMark rm;
4055 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)" : "");
4056 #ifndef PRODUCT
4057 ik->print();
4058 tty->print_cr("all fields:");
4059 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4060 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4061 }
4062 #endif //PRODUCT
4063 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
4064 return -1;
4065 }
4066
4067 void javaClasses_init() {
4068 JavaClasses::compute_offsets();
4069 JavaClasses::check_offsets();
4070 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4071 }