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 "prims/jvmtiRedefineClassesTrace.hpp"
49 #include "runtime/fieldDescriptor.hpp"
50 #include "runtime/handles.inline.hpp"
51 #include "runtime/interfaceSupport.hpp"
52 #include "runtime/java.hpp"
53 #include "runtime/javaCalls.hpp"
54 #include "runtime/safepoint.hpp"
55 #include "runtime/thread.inline.hpp"
56 #include "runtime/vframe.hpp"
57 #include "utilities/preserveException.hpp"
58
59 #if INCLUDE_JVMCI
60 #include "jvmci/jvmciJavaClasses.hpp"
61 #endif
62
63 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
64 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
65
66 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
67 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
68
69 InjectedField JavaClasses::_injected_fields[] = {
70 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
71 };
72
73 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
74 return _injected_fields[id].compute_offset();
75 }
76
77
78 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
79 *field_count = 0;
80
81 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
82 if (sid == vmSymbols::NO_SID) {
83 // Only well known classes can inject fields
84 return NULL;
85 }
86
87 int count = 0;
88 int start = -1;
89
90 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
91 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
92 count++; \
93 if (start == -1) start = klass##_##name##_enum; \
94 }
95 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
96 #undef LOOKUP_INJECTED_FIELD
97
98 if (start != -1) {
99 *field_count = count;
100 return _injected_fields + start;
101 }
102 return NULL;
103 }
104
105
106 static bool find_field(InstanceKlass* ik,
107 Symbol* name_symbol, Symbol* signature_symbol,
108 fieldDescriptor* fd,
109 bool is_static = false, bool allow_super = false) {
110 if (allow_super || is_static) {
111 return ik->find_field(name_symbol, signature_symbol, is_static, fd) != NULL;
112 } else {
113 return ik->find_local_field(name_symbol, signature_symbol, fd);
114 }
115 }
116
117 // Helpful routine for computing field offsets at run time rather than hardcoding them
118 static void
119 compute_offset(int &dest_offset,
120 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
121 bool is_static = false, bool allow_super = false) {
122 fieldDescriptor fd;
123 InstanceKlass* ik = InstanceKlass::cast(klass);
124 if (!find_field(ik, name_symbol, signature_symbol, &fd, is_static, allow_super)) {
125 ResourceMark rm;
126 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
127 #ifndef PRODUCT
128 ik->print();
129 tty->print_cr("all fields:");
130 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
131 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
132 }
133 #endif //PRODUCT
134 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:classload=info to see the origin of the problem class");
135 }
136 dest_offset = fd.offset();
137 }
138
139 // Same as above but for "optional" offsets that might not be present in certain JDK versions
140 static void
141 compute_optional_offset(int& dest_offset,
142 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
143 bool allow_super = false) {
144 fieldDescriptor fd;
145 InstanceKlass* ik = InstanceKlass::cast(klass);
146 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
147 dest_offset = fd.offset();
148 }
149 }
150
151
152 int java_lang_String::value_offset = 0;
153 int java_lang_String::hash_offset = 0;
154 int java_lang_String::coder_offset = 0;
155
156 bool java_lang_String::initialized = false;
157
158 bool java_lang_String::is_instance(oop obj) {
159 return is_instance_inlined(obj);
160 }
161
162 void java_lang_String::compute_offsets() {
163 assert(!initialized, "offsets should be initialized only once");
164
165 Klass* k = SystemDictionary::String_klass();
166 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::byte_array_signature());
167 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
168 compute_optional_offset(coder_offset, k, vmSymbols::coder_name(), vmSymbols::byte_signature());
169
170 initialized = true;
171 }
172
173 class CompactStringsFixup : public FieldClosure {
174 private:
175 bool _value;
176
177 public:
178 CompactStringsFixup(bool value) : _value(value) {}
179
180 void do_field(fieldDescriptor* fd) {
181 if (fd->name() == vmSymbols::compact_strings_name()) {
182 oop mirror = fd->field_holder()->java_mirror();
183 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
184 assert(mirror != NULL, "String must have mirror already");
185 mirror->bool_field_put(fd->offset(), _value);
186 }
187 }
188 };
189
190 void java_lang_String::set_compact_strings(bool value) {
191 CompactStringsFixup fix(value);
192 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
193 }
194
195 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
196 assert(initialized, "Must be initialized");
197 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
198
199 // Create the String object first, so there's a chance that the String
200 // and the char array it points to end up in the same cache line.
201 oop obj;
202 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
203
204 // Create the char array. The String object must be handlized here
205 // because GC can happen as a result of the allocation attempt.
206 Handle h_obj(THREAD, obj);
207 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
208 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
209
210 // Point the String at the char array
211 obj = h_obj();
212 set_value(obj, buffer);
213 // No need to zero the offset, allocation zero'ed the entire String object
214 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
215 return h_obj;
216 }
217
218 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
219 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
220 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
221 typeArrayOop buffer = value(h_obj());
222 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
223 if (is_latin1) {
224 for (int index = 0; index < length; index++) {
225 buffer->byte_at_put(index, (jbyte)unicode[index]);
226 }
227 } else {
228 for (int index = 0; index < length; index++) {
229 buffer->char_at_put(index, unicode[index]);
230 }
231 }
232
233 #ifdef ASSERT
234 {
235 ResourceMark rm;
236 char* expected = UNICODE::as_utf8(unicode, length);
237 char* actual = as_utf8_string(h_obj());
238 if (strcmp(expected, actual) != 0) {
239 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
240 ShouldNotReachHere();
241 }
242 }
243 #endif
244
245 return h_obj;
246 }
247
248 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
249 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
250 return h_obj();
251 }
252
253 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
254 if (utf8_str == NULL) {
255 return Handle();
256 }
257 bool has_multibyte, is_latin1;
258 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
259 if (!CompactStrings) {
260 has_multibyte = true;
261 is_latin1 = false;
262 }
263
264 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
265 if (length > 0) {
266 if (!has_multibyte) {
267 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
268 } else if (is_latin1) {
269 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
270 } else {
271 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
272 }
273 }
274
275 #ifdef ASSERT
276 // This check is too strict because the input string is not necessarily valid UTF8.
277 // For example, it may be created with arbitrary content via jni_NewStringUTF.
278 /*
279 {
280 ResourceMark rm;
281 const char* expected = utf8_str;
282 char* actual = as_utf8_string(h_obj());
283 if (strcmp(expected, actual) != 0) {
284 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
285 ShouldNotReachHere();
286 }
287 }
288 */
289 #endif
290
291 return h_obj;
292 }
293
294 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
295 Handle h_obj = create_from_str(utf8_str, CHECK_0);
296 return h_obj();
297 }
298
299 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
300 const char* utf8_str = (char*)symbol->bytes();
301 int utf8_len = symbol->utf8_length();
302
303 bool has_multibyte, is_latin1;
304 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
305 if (!CompactStrings) {
306 has_multibyte = true;
307 is_latin1 = false;
308 }
309
310 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
311 if (length > 0) {
312 if (!has_multibyte) {
313 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
314 } else if (is_latin1) {
315 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
316 } else {
317 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
318 }
319 }
320
321 #ifdef ASSERT
322 {
323 ResourceMark rm;
324 const char* expected = symbol->as_utf8();
325 char* actual = as_utf8_string(h_obj());
326 if (strncmp(expected, actual, utf8_len) != 0) {
327 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
328 ShouldNotReachHere();
329 }
330 }
331 #endif
332
333 return h_obj;
334 }
335
336 // Converts a C string to a Java String based on current encoding
337 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
338 assert(str != NULL, "bad arguments");
339
340 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
341 static to_java_string_fn_t _to_java_string_fn = NULL;
342
343 if (_to_java_string_fn == NULL) {
344 void *lib_handle = os::native_java_library();
345 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
346 if (_to_java_string_fn == NULL) {
347 fatal("NewStringPlatform missing");
348 }
349 }
350
351 jstring js = NULL;
352 { JavaThread* thread = (JavaThread*)THREAD;
353 assert(thread->is_Java_thread(), "must be java thread");
354 HandleMark hm(thread);
355 ThreadToNativeFromVM ttn(thread);
356 js = (_to_java_string_fn)(thread->jni_environment(), str);
357 }
358 return Handle(THREAD, JNIHandles::resolve(js));
359 }
360
361 // Converts a Java String to a native C string that can be used for
362 // native OS calls.
363 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
364 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
365 static to_platform_string_fn_t _to_platform_string_fn = NULL;
366
367 if (_to_platform_string_fn == NULL) {
368 void *lib_handle = os::native_java_library();
369 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
370 if (_to_platform_string_fn == NULL) {
371 fatal("GetStringPlatformChars missing");
372 }
373 }
374
375 char *native_platform_string;
376 { JavaThread* thread = (JavaThread*)THREAD;
377 assert(thread->is_Java_thread(), "must be java thread");
378 JNIEnv *env = thread->jni_environment();
379 jstring js = (jstring) JNIHandles::make_local(env, java_string());
380 bool is_copy;
381 HandleMark hm(thread);
382 ThreadToNativeFromVM ttn(thread);
383 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
384 assert(is_copy == JNI_TRUE, "is_copy value changed");
385 JNIHandles::destroy_local(js);
386 }
387 return native_platform_string;
388 }
389
390 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
391 oop obj = java_string();
392 // Typical usage is to convert all '/' to '.' in string.
393 typeArrayOop value = java_lang_String::value(obj);
394 int length = java_lang_String::length(obj);
395 bool is_latin1 = java_lang_String::is_latin1(obj);
396
397 // First check if any from_char exist
398 int index; // Declared outside, used later
399 for (index = 0; index < length; index++) {
400 jchar c = !is_latin1 ? value->char_at(index) :
401 ((jchar) value->byte_at(index)) & 0xff;
402 if (c == from_char) {
403 break;
404 }
405 }
406 if (index == length) {
407 // No from_char, so do not copy.
408 return java_string;
409 }
410
411 // Check if result string will be latin1
412 bool to_is_latin1 = false;
413
414 // Replacement char must be latin1
415 if (CompactStrings && UNICODE::is_latin1(to_char)) {
416 if (is_latin1) {
417 // Source string is latin1 as well
418 to_is_latin1 = true;
419 } else if (!UNICODE::is_latin1(from_char)) {
420 // We are replacing an UTF16 char. Scan string to
421 // check if result can be latin1 encoded.
422 to_is_latin1 = true;
423 for (index = 0; index < length; index++) {
424 jchar c = value->char_at(index);
425 if (c != from_char && !UNICODE::is_latin1(c)) {
426 to_is_latin1 = false;
427 break;
428 }
429 }
430 }
431 }
432
433 // Create new UNICODE (or byte) buffer. Must handlize value because GC
434 // may happen during String and char array creation.
435 typeArrayHandle h_value(THREAD, value);
436 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
437 typeArrayOop from_buffer = h_value();
438 typeArrayOop to_buffer = java_lang_String::value(string());
439
440 // Copy contents
441 for (index = 0; index < length; index++) {
442 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
443 ((jchar) from_buffer->byte_at(index)) & 0xff;
444 if (c == from_char) {
445 c = to_char;
446 }
447 if (!to_is_latin1) {
448 to_buffer->char_at_put(index, c);
449 } else {
450 to_buffer->byte_at_put(index, (jbyte) c);
451 }
452 }
453 return string;
454 }
455
456 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
457 typeArrayOop value = java_lang_String::value(java_string);
458 length = java_lang_String::length(java_string);
459 bool is_latin1 = java_lang_String::is_latin1(java_string);
460
461 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
462 if (result != NULL) {
463 if (!is_latin1) {
464 for (int index = 0; index < length; index++) {
465 result[index] = value->char_at(index);
466 }
467 } else {
468 for (int index = 0; index < length; index++) {
469 result[index] = ((jchar) value->byte_at(index)) & 0xff;
470 }
471 }
472 } else {
473 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
474 }
475 return result;
476 }
477
478 unsigned int java_lang_String::hash_code(oop java_string) {
479 int length = java_lang_String::length(java_string);
480 // Zero length string will hash to zero with String.hashCode() function.
481 if (length == 0) return 0;
482
483 typeArrayOop value = java_lang_String::value(java_string);
484 bool is_latin1 = java_lang_String::is_latin1(java_string);
485
486 if (is_latin1) {
487 return java_lang_String::hash_code(value->byte_at_addr(0), length);
488 } else {
489 return java_lang_String::hash_code(value->char_at_addr(0), length);
490 }
491 }
492
493 char* java_lang_String::as_quoted_ascii(oop java_string) {
494 typeArrayOop value = java_lang_String::value(java_string);
495 int length = java_lang_String::length(java_string);
496 bool is_latin1 = java_lang_String::is_latin1(java_string);
497
498 if (length == 0) return NULL;
499
500 char* result;
501 int result_length;
502 if (!is_latin1) {
503 jchar* base = value->char_at_addr(0);
504 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
505 result = NEW_RESOURCE_ARRAY(char, result_length);
506 UNICODE::as_quoted_ascii(base, length, result, result_length);
507 } else {
508 jbyte* base = value->byte_at_addr(0);
509 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
510 result = NEW_RESOURCE_ARRAY(char, result_length);
511 UNICODE::as_quoted_ascii(base, length, result, result_length);
512 }
513 assert(result_length >= length + 1, "must not be shorter");
514 assert(result_length == (int)strlen(result) + 1, "must match");
515 return result;
516 }
517
518 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
519 oop obj = java_string();
520 typeArrayOop value = java_lang_String::value(obj);
521 int length = java_lang_String::length(obj);
522 bool is_latin1 = java_lang_String::is_latin1(obj);
523 if (!is_latin1) {
524 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
525 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
526 return sym;
527 } else {
528 ResourceMark rm;
529 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
530 const char* base = UNICODE::as_utf8(position, length);
531 Symbol* sym = SymbolTable::lookup(base, length, THREAD);
532 return sym;
533 }
534 }
535
536 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
537 typeArrayOop value = java_lang_String::value(java_string);
538 int length = java_lang_String::length(java_string);
539 bool is_latin1 = java_lang_String::is_latin1(java_string);
540 if (!is_latin1) {
541 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
542 return SymbolTable::probe_unicode(base, length);
543 } else {
544 ResourceMark rm;
545 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
546 const char* base = UNICODE::as_utf8(position, length);
547 return SymbolTable::probe(base, length);
548 }
549 }
550
551 int java_lang_String::utf8_length(oop java_string) {
552 typeArrayOop value = java_lang_String::value(java_string);
553 int length = java_lang_String::length(java_string);
554 bool is_latin1 = java_lang_String::is_latin1(java_string);
555 if (length == 0) {
556 return 0;
557 }
558 if (!is_latin1) {
559 return UNICODE::utf8_length(value->char_at_addr(0), length);
560 } else {
561 return UNICODE::utf8_length(value->byte_at_addr(0), length);
562 }
563 }
564
565 char* java_lang_String::as_utf8_string(oop java_string) {
566 typeArrayOop value = java_lang_String::value(java_string);
567 int length = java_lang_String::length(java_string);
568 bool is_latin1 = java_lang_String::is_latin1(java_string);
569 if (!is_latin1) {
570 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
571 return UNICODE::as_utf8(position, length);
572 } else {
573 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
574 return UNICODE::as_utf8(position, length);
575 }
576 }
577
578 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
579 typeArrayOop value = java_lang_String::value(java_string);
580 int length = java_lang_String::length(java_string);
581 bool is_latin1 = java_lang_String::is_latin1(java_string);
582 if (!is_latin1) {
583 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
584 return UNICODE::as_utf8(position, length, buf, buflen);
585 } else {
586 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
587 return UNICODE::as_utf8(position, length, buf, buflen);
588 }
589 }
590
591 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
592 typeArrayOop value = java_lang_String::value(java_string);
593 int length = java_lang_String::length(java_string);
594 assert(start + len <= length, "just checking");
595 bool is_latin1 = java_lang_String::is_latin1(java_string);
596 if (!is_latin1) {
597 jchar* position = value->char_at_addr(start);
598 return UNICODE::as_utf8(position, len);
599 } else {
600 jbyte* position = value->byte_at_addr(start);
601 return UNICODE::as_utf8(position, len);
602 }
603 }
604
605 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
606 typeArrayOop value = java_lang_String::value(java_string);
607 int length = java_lang_String::length(java_string);
608 assert(start + len <= length, "just checking");
609 bool is_latin1 = java_lang_String::is_latin1(java_string);
610 if (!is_latin1) {
611 jchar* position = value->char_at_addr(start);
612 return UNICODE::as_utf8(position, len, buf, buflen);
613 } else {
614 jbyte* position = value->byte_at_addr(start);
615 return UNICODE::as_utf8(position, len, buf, buflen);
616 }
617 }
618
619 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
620 assert(java_string->klass() == SystemDictionary::String_klass(),
621 "must be java_string");
622 typeArrayOop value = java_lang_String::value(java_string);
623 int length = java_lang_String::length(java_string);
624 if (length != len) {
625 return false;
626 }
627 bool is_latin1 = java_lang_String::is_latin1(java_string);
628 if (!is_latin1) {
629 for (int i = 0; i < len; i++) {
630 if (value->char_at(i) != chars[i]) {
631 return false;
632 }
633 }
634 } else {
635 for (int i = 0; i < len; i++) {
636 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
637 return false;
638 }
639 }
640 }
641 return true;
642 }
643
644 bool java_lang_String::equals(oop str1, oop str2) {
645 assert(str1->klass() == SystemDictionary::String_klass(),
646 "must be java String");
647 assert(str2->klass() == SystemDictionary::String_klass(),
648 "must be java String");
649 typeArrayOop value1 = java_lang_String::value(str1);
650 int length1 = java_lang_String::length(str1);
651 bool is_latin1 = java_lang_String::is_latin1(str1);
652 typeArrayOop value2 = java_lang_String::value(str2);
653 int length2 = java_lang_String::length(str2);
654 bool is_latin2 = java_lang_String::is_latin1(str2);
655
656 if ((length1 != length2) || (is_latin1 != is_latin2)) {
657 // Strings of different size or with different
658 // coders are never equal.
659 return false;
660 }
661 int blength1 = value1->length();
662 for (int i = 0; i < value1->length(); i++) {
663 if (value1->byte_at(i) != value2->byte_at(i)) {
664 return false;
665 }
666 }
667 return true;
668 }
669
670 void java_lang_String::print(oop java_string, outputStream* st) {
671 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
672 typeArrayOop value = java_lang_String::value(java_string);
673
674 if (value == NULL) {
675 // This can happen if, e.g., printing a String
676 // object before its initializer has been called
677 st->print("NULL");
678 return;
679 }
680
681 int length = java_lang_String::length(java_string);
682 bool is_latin1 = java_lang_String::is_latin1(java_string);
683
684 st->print("\"");
685 for (int index = 0; index < length; index++) {
686 st->print("%c", (!is_latin1) ? value->char_at(index) :
687 ((jchar) value->byte_at(index)) & 0xff );
688 }
689 st->print("\"");
690 }
691
692
693 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
694 assert(mirror.not_null() && fd->is_static(), "just checking");
695 if (fd->has_initial_value()) {
696 BasicType t = fd->field_type();
697 switch (t) {
698 case T_BYTE:
699 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
700 break;
701 case T_BOOLEAN:
702 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
703 break;
704 case T_CHAR:
705 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
706 break;
707 case T_SHORT:
708 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
709 break;
710 case T_INT:
711 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
712 break;
713 case T_FLOAT:
714 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
715 break;
716 case T_DOUBLE:
717 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
718 break;
719 case T_LONG:
720 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
721 break;
722 case T_OBJECT:
723 {
724 #ifdef ASSERT
725 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
726 assert(fd->signature() == sym, "just checking");
727 #endif
728 oop string = fd->string_initial_value(CHECK);
729 mirror()->obj_field_put(fd->offset(), string);
730 }
731 break;
732 default:
733 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
734 "Illegal ConstantValue attribute in class file");
735 }
736 }
737 }
738
739
740 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
741 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
742
743 // If the offset was read from the shared archive, it was fixed up already
744 if (!k->is_shared()) {
745 if (k->is_instance_klass()) {
746 // During bootstrap, java.lang.Class wasn't loaded so static field
747 // offsets were computed without the size added it. Go back and
748 // update all the static field offsets to included the size.
749 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
750 if (fs.access_flags().is_static()) {
751 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
752 fs.set_offset(real_offset);
753 }
754 }
755 }
756 }
757 create_mirror(k, Handle(NULL), Handle(NULL), Handle(NULL), CHECK);
758 }
759
760 void java_lang_Class::initialize_mirror_fields(KlassHandle k,
761 Handle mirror,
762 Handle protection_domain,
763 TRAPS) {
764 // Allocate a simple java object for a lock.
765 // This needs to be a java object because during class initialization
766 // it can be held across a java call.
767 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
768 set_init_lock(mirror(), r);
769
770 // Set protection domain also
771 set_protection_domain(mirror(), protection_domain());
772
773 // Initialize static fields
774 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, mirror, CHECK);
775 }
776
777 void java_lang_Class::create_mirror(KlassHandle k, Handle class_loader,
778 Handle module, Handle protection_domain, TRAPS) {
779 assert(k->java_mirror() == NULL, "should only assign mirror once");
780 // Use this moment of initialization to cache modifier_flags also,
781 // to support Class.getModifiers(). Instance classes recalculate
782 // the cached flags after the class file is parsed, but before the
783 // class is put into the system dictionary.
784 int computed_modifiers = k->compute_modifier_flags(CHECK);
785 k->set_modifier_flags(computed_modifiers);
786 // Class_klass has to be loaded because it is used to allocate
787 // the mirror.
788 if (SystemDictionary::Class_klass_loaded()) {
789 // Allocate mirror (java.lang.Class instance)
790 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
791
792 // Setup indirection from mirror->klass
793 if (!k.is_null()) {
794 java_lang_Class::set_klass(mirror(), k());
795 }
796
797 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
798 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
799
800 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
801
802 // It might also have a component mirror. This mirror must already exist.
803 if (k->is_array_klass()) {
804 Handle comp_mirror;
805 if (k->is_typeArray_klass()) {
806 BasicType type = TypeArrayKlass::cast(k())->element_type();
807 comp_mirror = Universe::java_mirror(type);
808 } else {
809 assert(k->is_objArray_klass(), "Must be");
810 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
811 assert(element_klass != NULL, "Must have an element klass");
812 comp_mirror = element_klass->java_mirror();
813 }
814 assert(comp_mirror.not_null(), "must have a mirror");
815
816 // Two-way link between the array klass and its component mirror:
817 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
818 set_component_mirror(mirror(), comp_mirror());
819 set_array_klass(comp_mirror(), k());
820 } else {
821 assert(k->is_instance_klass(), "Must be");
822
823 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
824 if (HAS_PENDING_EXCEPTION) {
825 // If any of the fields throws an exception like OOM remove the klass field
826 // from the mirror so GC doesn't follow it after the klass has been deallocated.
827 // This mirror looks like a primitive type, which logically it is because it
828 // it represents no class.
829 java_lang_Class::set_klass(mirror(), NULL);
830 return;
831 }
832 }
833
834 // set the classLoader field in the java_lang_Class instance
835 assert(class_loader() == k->class_loader(), "should be same");
836 set_class_loader(mirror(), class_loader());
837
838 // set the module field in the java_lang_Class instance
839 // This may be null during bootstrap but will get fixed up later on.
840 set_module(mirror(), module());
841
842 // Setup indirection from klass->mirror last
843 // after any exceptions can happen during allocations.
844 if (!k.is_null()) {
845 k->set_java_mirror(mirror());
846 }
847
848 // Keep list of classes needing java.base module fixup.
849 if (!ModuleEntryTable::javabase_defined()) {
850 if (fixup_module_field_list() == NULL) {
851 GrowableArray<Klass*>* list =
852 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(500, true);
853 set_fixup_module_field_list(list);
854 }
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::_vmAllowSuspension_offset = 0;
1381 int java_lang_ThreadGroup::_nthreads_offset = 0;
1382 int java_lang_ThreadGroup::_ngroups_offset = 0;
1383
1384 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1385 assert(java_thread_group->is_oop(), "thread group must be oop");
1386 return java_thread_group->obj_field(_parent_offset);
1387 }
1388
1389 // ("name as oop" accessor is not necessary)
1390
1391 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1392 oop name = java_thread_group->obj_field(_name_offset);
1393 // ThreadGroup.name can be null
1394 if (name != NULL) {
1395 return java_lang_String::as_utf8_string(name);
1396 }
1397 return NULL;
1398 }
1399
1400 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1401 assert(java_thread_group->is_oop(), "thread group must be oop");
1402 return java_thread_group->int_field(_nthreads_offset);
1403 }
1404
1405 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1406 oop threads = java_thread_group->obj_field(_threads_offset);
1407 assert(threads != NULL, "threadgroups should have threads");
1408 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1409 return objArrayOop(threads);
1410 }
1411
1412 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1413 assert(java_thread_group->is_oop(), "thread group must be oop");
1414 return java_thread_group->int_field(_ngroups_offset);
1415 }
1416
1417 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1418 oop groups = java_thread_group->obj_field(_groups_offset);
1419 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1420 return objArrayOop(groups);
1421 }
1422
1423 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1424 assert(java_thread_group->is_oop(), "thread group must be oop");
1425 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1426 }
1427
1428 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1429 assert(java_thread_group->is_oop(), "thread group must be oop");
1430 return java_thread_group->bool_field(_destroyed_offset) != 0;
1431 }
1432
1433 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1434 assert(java_thread_group->is_oop(), "thread group must be oop");
1435 return java_thread_group->bool_field(_daemon_offset) != 0;
1436 }
1437
1438 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1439 assert(java_thread_group->is_oop(), "thread group must be oop");
1440 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1441 }
1442
1443 void java_lang_ThreadGroup::compute_offsets() {
1444 assert(_parent_offset == 0, "offsets should be initialized only once");
1445
1446 Klass* k = SystemDictionary::ThreadGroup_klass();
1447
1448 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1449 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1450 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1451 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1452 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1453 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1454 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1455 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1456 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1457 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1458 }
1459
1460
1461 void java_lang_Throwable::compute_offsets() {
1462 Klass* k = SystemDictionary::Throwable_klass();
1463 compute_offset(depth_offset, k, vmSymbols::depth_name(), vmSymbols::int_signature());
1464 }
1465
1466 oop java_lang_Throwable::unassigned_stacktrace() {
1467 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1468 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1469 if (UseCompressedOops) {
1470 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1471 } else {
1472 return oopDesc::load_decode_heap_oop((oop*)addr);
1473 }
1474 }
1475
1476 oop java_lang_Throwable::backtrace(oop throwable) {
1477 return throwable->obj_field_acquire(backtrace_offset);
1478 }
1479
1480
1481 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1482 throwable->release_obj_field_put(backtrace_offset, value);
1483 }
1484
1485 int java_lang_Throwable::depth(oop throwable) {
1486 return throwable->int_field(depth_offset);
1487 }
1488
1489 void java_lang_Throwable::set_depth(oop throwable, int value) {
1490 throwable->int_field_put(depth_offset, value);
1491 }
1492
1493 oop java_lang_Throwable::message(Handle throwable) {
1494 return throwable->obj_field(detailMessage_offset);
1495 }
1496
1497
1498 // Return Symbol for detailed_message or NULL
1499 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1500 PRESERVE_EXCEPTION_MARK; // Keep original exception
1501 oop detailed_message = java_lang_Throwable::message(throwable);
1502 if (detailed_message != NULL) {
1503 return java_lang_String::as_symbol(detailed_message, THREAD);
1504 }
1505 return NULL;
1506 }
1507
1508 void java_lang_Throwable::set_message(oop throwable, oop value) {
1509 throwable->obj_field_put(detailMessage_offset, value);
1510 }
1511
1512
1513 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1514 throwable->obj_field_put(stackTrace_offset, st_element_array);
1515 }
1516
1517 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1518 set_stacktrace(throwable, NULL);
1519 }
1520
1521
1522 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1523 ResourceMark rm;
1524 Klass* k = throwable->klass();
1525 assert(k != NULL, "just checking");
1526 st->print("%s", k->external_name());
1527 oop msg = message(throwable);
1528 if (msg != NULL) {
1529 st->print(": %s", java_lang_String::as_utf8_string(msg));
1530 }
1531 }
1532
1533 // After this many redefines, the stack trace is unreliable.
1534 const int MAX_VERSION = USHRT_MAX;
1535
1536 static inline bool version_matches(Method* method, int version) {
1537 assert(version < MAX_VERSION, "version is too big");
1538 return method != NULL && (method->constants()->version() == version);
1539 }
1540
1541
1542 // This class provides a simple wrapper over the internal structure of
1543 // exception backtrace to insulate users of the backtrace from needing
1544 // to know what it looks like.
1545 class BacktraceBuilder: public StackObj {
1546 friend class BacktraceIterator;
1547 private:
1548 Handle _backtrace;
1549 objArrayOop _head;
1550 typeArrayOop _methods;
1551 typeArrayOop _bcis;
1552 objArrayOop _mirrors;
1553 typeArrayOop _cprefs; // needed to insulate method name against redefinition
1554 int _index;
1555 NoSafepointVerifier _nsv;
1556
1557 enum {
1558 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1559 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1560 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1561 trace_cprefs_offset = java_lang_Throwable::trace_cprefs_offset,
1562 trace_next_offset = java_lang_Throwable::trace_next_offset,
1563 trace_size = java_lang_Throwable::trace_size,
1564 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1565 };
1566
1567 // get info out of chunks
1568 static typeArrayOop get_methods(objArrayHandle chunk) {
1569 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1570 assert(methods != NULL, "method array should be initialized in backtrace");
1571 return methods;
1572 }
1573 static typeArrayOop get_bcis(objArrayHandle chunk) {
1574 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1575 assert(bcis != NULL, "bci array should be initialized in backtrace");
1576 return bcis;
1577 }
1578 static objArrayOop get_mirrors(objArrayHandle chunk) {
1579 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1580 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1581 return mirrors;
1582 }
1583 static typeArrayOop get_cprefs(objArrayHandle chunk) {
1584 typeArrayOop cprefs = typeArrayOop(chunk->obj_at(trace_cprefs_offset));
1585 assert(cprefs != NULL, "cprefs array should be initialized in backtrace");
1586 return cprefs;
1587 }
1588
1589 public:
1590
1591 // constructor for new backtrace
1592 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _cprefs(NULL) {
1593 expand(CHECK);
1594 _backtrace = _head;
1595 _index = 0;
1596 }
1597
1598 BacktraceBuilder(objArrayHandle backtrace) {
1599 _methods = get_methods(backtrace);
1600 _bcis = get_bcis(backtrace);
1601 _mirrors = get_mirrors(backtrace);
1602 _cprefs = get_cprefs(backtrace);
1603 assert(_methods->length() == _bcis->length() &&
1604 _methods->length() == _mirrors->length(),
1605 "method and source information arrays should match");
1606
1607 // head is the preallocated backtrace
1608 _backtrace = _head = backtrace();
1609 _index = 0;
1610 }
1611
1612 void expand(TRAPS) {
1613 objArrayHandle old_head(THREAD, _head);
1614 PauseNoSafepointVerifier pnsv(&_nsv);
1615
1616 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1617 objArrayHandle new_head(THREAD, head);
1618
1619 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1620 typeArrayHandle new_methods(THREAD, methods);
1621
1622 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1623 typeArrayHandle new_bcis(THREAD, bcis);
1624
1625 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1626 objArrayHandle new_mirrors(THREAD, mirrors);
1627
1628 typeArrayOop cprefs = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1629 typeArrayHandle new_cprefs(THREAD, cprefs);
1630
1631 if (!old_head.is_null()) {
1632 old_head->obj_at_put(trace_next_offset, new_head());
1633 }
1634 new_head->obj_at_put(trace_methods_offset, new_methods());
1635 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1636 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1637 new_head->obj_at_put(trace_cprefs_offset, new_cprefs());
1638
1639 _head = new_head();
1640 _methods = new_methods();
1641 _bcis = new_bcis();
1642 _mirrors = new_mirrors();
1643 _cprefs = new_cprefs();
1644 _index = 0;
1645 }
1646
1647 oop backtrace() {
1648 return _backtrace();
1649 }
1650
1651 inline void push(Method* method, int bci, TRAPS) {
1652 // Smear the -1 bci to 0 since the array only holds unsigned
1653 // shorts. The later line number lookup would just smear the -1
1654 // to a 0 even if it could be recorded.
1655 if (bci == SynchronizationEntryBCI) bci = 0;
1656
1657 if (_index >= trace_chunk_size) {
1658 methodHandle mhandle(THREAD, method);
1659 expand(CHECK);
1660 method = mhandle();
1661 }
1662
1663 _methods->short_at_put(_index, method->orig_method_idnum());
1664 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
1665 _cprefs->short_at_put(_index, method->name_index());
1666
1667 // We need to save the mirrors in the backtrace to keep the class
1668 // from being unloaded while we still have this stack trace.
1669 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1670 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1671 _index++;
1672 }
1673
1674 };
1675
1676 struct BacktraceElement : public StackObj {
1677 int _method_id;
1678 int _bci;
1679 int _version;
1680 int _cpref;
1681 Handle _mirror;
1682 BacktraceElement(Handle mirror, int mid, int version, int bci, int cpref) :
1683 _mirror(mirror), _method_id(mid), _version(version), _bci(bci), _cpref(cpref) {}
1684 };
1685
1686 class BacktraceIterator : public StackObj {
1687 int _index;
1688 objArrayHandle _result;
1689 objArrayHandle _mirrors;
1690 typeArrayHandle _methods;
1691 typeArrayHandle _bcis;
1692 typeArrayHandle _cprefs;
1693
1694 void init(objArrayHandle result, Thread* thread) {
1695 // Get method id, bci, version and mirror from chunk
1696 _result = result;
1697 if (_result.not_null()) {
1698 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
1699 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
1700 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
1701 _cprefs = typeArrayHandle(thread, BacktraceBuilder::get_cprefs(_result));
1702 _index = 0;
1703 }
1704 }
1705 public:
1706 BacktraceIterator(objArrayHandle result, Thread* thread) {
1707 init(result, thread);
1708 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
1709 }
1710
1711 BacktraceElement next(Thread* thread) {
1712 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
1713 _methods->short_at(_index),
1714 Backtrace::version_at(_bcis->int_at(_index)),
1715 Backtrace::bci_at(_bcis->int_at(_index)),
1716 _cprefs->short_at(_index));
1717 _index++;
1718
1719 if (_index >= java_lang_Throwable::trace_chunk_size) {
1720 int next_offset = java_lang_Throwable::trace_next_offset;
1721 // Get next chunk
1722 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
1723 init(result, thread);
1724 }
1725 return e;
1726 }
1727
1728 bool repeat() {
1729 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
1730 }
1731 };
1732
1733
1734 // Print stack trace element to resource allocated buffer
1735 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
1736 int version, int bci, int cpref) {
1737 ResourceMark rm;
1738
1739 // Get strings and string lengths
1740 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1741 const char* klass_name = holder->external_name();
1742 int buf_len = (int)strlen(klass_name);
1743
1744 Method* method = holder->method_with_orig_idnum(method_id, version);
1745
1746 // The method can be NULL if the requested class version is gone
1747 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
1748 char* method_name = sym->as_C_string();
1749 buf_len += (int)strlen(method_name);
1750
1751 char* source_file_name = NULL;
1752 Symbol* source = Backtrace::get_source_file_name(holder, version);
1753 if (source != NULL) {
1754 source_file_name = source->as_C_string();
1755 buf_len += (int)strlen(source_file_name);
1756 }
1757
1758 char *module_name = NULL, *module_version = NULL;
1759 ModuleEntry* module = holder->module();
1760 if (module->is_named()) {
1761 module_name = module->name()->as_C_string();
1762 buf_len += (int)strlen(module_name);
1763 if (module->version() != NULL) {
1764 module_version = module->version()->as_C_string();
1765 buf_len += (int)strlen(module_version);
1766 }
1767 }
1768
1769 // Allocate temporary buffer with extra space for formatting and line number
1770 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1771
1772 // Print stack trace line in buffer
1773 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
1774
1775 // Print module information
1776 if (module_name != NULL) {
1777 if (module_version != NULL) {
1778 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
1779 } else {
1780 sprintf(buf + (int)strlen(buf), "%s/", module_name);
1781 }
1782 }
1783
1784 if (!version_matches(method, version)) {
1785 strcat(buf, "Redefined)");
1786 } else {
1787 int line_number = Backtrace::get_line_number(method, bci);
1788 if (line_number == -2) {
1789 strcat(buf, "Native Method)");
1790 } else {
1791 if (source_file_name != NULL && (line_number != -1)) {
1792 // Sourcename and linenumber
1793 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
1794 } else if (source_file_name != NULL) {
1795 // Just sourcename
1796 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
1797 } else {
1798 // Neither sourcename nor linenumber
1799 sprintf(buf + (int)strlen(buf), "Unknown Source)");
1800 }
1801 nmethod* nm = method->code();
1802 if (WizardMode && nm != NULL) {
1803 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1804 }
1805 }
1806 }
1807
1808 st->print_cr("%s", buf);
1809 }
1810
1811 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
1812 Handle mirror = method->method_holder()->java_mirror();
1813 int method_id = method->orig_method_idnum();
1814 int version = method->constants()->version();
1815 int cpref = method->name_index();
1816 print_stack_element_to_stream(st, mirror, method_id, version, bci, cpref);
1817 }
1818
1819 /**
1820 * Print the throwable message and its stack trace plus all causes by walking the
1821 * cause chain. The output looks the same as of Throwable.printStackTrace().
1822 */
1823 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
1824 // First, print the message.
1825 print(throwable, st);
1826 st->cr();
1827
1828 // Now print the stack trace.
1829 Thread* THREAD = Thread::current();
1830 while (throwable.not_null()) {
1831 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
1832 if (result.is_null()) {
1833 st->print_raw_cr("\t<<no stack trace available>>");
1834 return;
1835 }
1836 BacktraceIterator iter(result, THREAD);
1837
1838 while (iter.repeat()) {
1839 BacktraceElement bte = iter.next(THREAD);
1840 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._cpref);
1841 }
1842 {
1843 // Call getCause() which doesn't necessarily return the _cause field.
1844 EXCEPTION_MARK;
1845 JavaValue cause(T_OBJECT);
1846 JavaCalls::call_virtual(&cause,
1847 throwable,
1848 KlassHandle(THREAD, throwable->klass()),
1849 vmSymbols::getCause_name(),
1850 vmSymbols::void_throwable_signature(),
1851 THREAD);
1852 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1853 if (HAS_PENDING_EXCEPTION) {
1854 CLEAR_PENDING_EXCEPTION;
1855 throwable = Handle();
1856 } else {
1857 throwable = Handle(THREAD, (oop) cause.get_jobject());
1858 if (throwable.not_null()) {
1859 st->print("Caused by: ");
1860 print(throwable, st);
1861 st->cr();
1862 }
1863 }
1864 }
1865 }
1866 }
1867
1868 /**
1869 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
1870 */
1871 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
1872 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
1873 JavaValue result(T_VOID);
1874 JavaCalls::call_virtual(&result,
1875 throwable,
1876 KlassHandle(THREAD, SystemDictionary::Throwable_klass()),
1877 vmSymbols::printStackTrace_name(),
1878 vmSymbols::void_method_signature(),
1879 THREAD);
1880 }
1881
1882 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
1883 if (!StackTraceInThrowable) return;
1884 ResourceMark rm(THREAD);
1885
1886 // Start out by clearing the backtrace for this object, in case the VM
1887 // runs out of memory while allocating the stack trace
1888 set_backtrace(throwable(), NULL);
1889 // Clear lazily constructed Java level stacktrace if refilling occurs
1890 // This is unnecessary in 1.7+ but harmless
1891 clear_stacktrace(throwable());
1892
1893 int max_depth = MaxJavaStackTraceDepth;
1894 JavaThread* thread = (JavaThread*)THREAD;
1895
1896 BacktraceBuilder bt(CHECK);
1897
1898 // If there is no Java frame just return the method that was being called
1899 // with bci 0
1900 if (!thread->has_last_Java_frame()) {
1901 if (max_depth >= 1 && method() != NULL) {
1902 bt.push(method(), 0, CHECK);
1903 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
1904 set_depth(throwable(), 1);
1905 set_backtrace(throwable(), bt.backtrace());
1906 }
1907 return;
1908 }
1909
1910 // Instead of using vframe directly, this version of fill_in_stack_trace
1911 // basically handles everything by hand. This significantly improved the
1912 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1913 // See bug 6333838 for more details.
1914 // The "ASSERT" here is to verify this method generates the exactly same stack
1915 // trace as utilizing vframe.
1916 #ifdef ASSERT
1917 vframeStream st(thread);
1918 methodHandle st_method(THREAD, st.method());
1919 #endif
1920 int total_count = 0;
1921 RegisterMap map(thread, false);
1922 int decode_offset = 0;
1923 nmethod* nm = NULL;
1924 bool skip_fillInStackTrace_check = false;
1925 bool skip_throwableInit_check = false;
1926 bool skip_hidden = !ShowHiddenFrames;
1927
1928 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1929 Method* method = NULL;
1930 int bci = 0;
1931
1932 // Compiled java method case.
1933 if (decode_offset != 0) {
1934 DebugInfoReadStream stream(nm, decode_offset);
1935 decode_offset = stream.read_int();
1936 method = (Method*)nm->metadata_at(stream.read_int());
1937 bci = stream.read_bci();
1938 } else {
1939 if (fr.is_first_frame()) break;
1940 address pc = fr.pc();
1941 if (fr.is_interpreted_frame()) {
1942 address bcp = fr.interpreter_frame_bcp();
1943 method = fr.interpreter_frame_method();
1944 bci = method->bci_from(bcp);
1945 fr = fr.sender(&map);
1946 } else {
1947 CodeBlob* cb = fr.cb();
1948 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1949 // but non nmethod
1950 fr = fr.sender(&map);
1951 if (cb == NULL || !cb->is_nmethod()) {
1952 continue;
1953 }
1954 nm = (nmethod*)cb;
1955 if (nm->method()->is_native()) {
1956 method = nm->method();
1957 bci = 0;
1958 } else {
1959 PcDesc* pd = nm->pc_desc_at(pc);
1960 decode_offset = pd->scope_decode_offset();
1961 // if decode_offset is not equal to 0, it will execute the
1962 // "compiled java method case" at the beginning of the loop.
1963 continue;
1964 }
1965 }
1966 }
1967 #ifdef ASSERT
1968 assert(st_method() == method && st.bci() == bci,
1969 "Wrong stack trace");
1970 st.next();
1971 // vframeStream::method isn't GC-safe so store off a copy
1972 // of the Method* in case we GC.
1973 if (!st.at_end()) {
1974 st_method = st.method();
1975 }
1976 #endif
1977
1978 // the format of the stacktrace will be:
1979 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1980 // - 0 or more <init> methods for the exception class (skipped)
1981 // - rest of the stack
1982
1983 if (!skip_fillInStackTrace_check) {
1984 if (method->name() == vmSymbols::fillInStackTrace_name() &&
1985 throwable->is_a(method->method_holder())) {
1986 continue;
1987 }
1988 else {
1989 skip_fillInStackTrace_check = true; // gone past them all
1990 }
1991 }
1992 if (!skip_throwableInit_check) {
1993 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1994
1995 // skip <init> methods of the exception class and superclasses
1996 // This is simlar to classic VM.
1997 if (method->name() == vmSymbols::object_initializer_name() &&
1998 throwable->is_a(method->method_holder())) {
1999 continue;
2000 } else {
2001 // there are none or we've seen them all - either way stop checking
2002 skip_throwableInit_check = true;
2003 }
2004 }
2005 if (method->is_hidden()) {
2006 if (skip_hidden) continue;
2007 }
2008 bt.push(method, bci, CHECK);
2009 total_count++;
2010 }
2011
2012 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2013
2014 // Put completed stack trace into throwable object
2015 set_backtrace(throwable(), bt.backtrace());
2016 set_depth(throwable(), total_count);
2017 }
2018
2019 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2020 // No-op if stack trace is disabled
2021 if (!StackTraceInThrowable) {
2022 return;
2023 }
2024
2025 // Disable stack traces for some preallocated out of memory errors
2026 if (!Universe::should_fill_in_stack_trace(throwable)) {
2027 return;
2028 }
2029
2030 PRESERVE_EXCEPTION_MARK;
2031
2032 JavaThread* thread = JavaThread::active();
2033 fill_in_stack_trace(throwable, method, thread);
2034 // ignore exceptions thrown during stack trace filling
2035 CLEAR_PENDING_EXCEPTION;
2036 }
2037
2038 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2039 // Allocate stack trace - backtrace is created but not filled in
2040
2041 // No-op if stack trace is disabled
2042 if (!StackTraceInThrowable) return;
2043 BacktraceBuilder bt(CHECK); // creates a backtrace
2044 set_backtrace(throwable(), bt.backtrace());
2045 }
2046
2047
2048 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2049 // Fill in stack trace into preallocated backtrace (no GC)
2050
2051 // No-op if stack trace is disabled
2052 if (!StackTraceInThrowable) return;
2053
2054 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2055
2056 JavaThread* THREAD = JavaThread::current();
2057
2058 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2059 assert(backtrace.not_null(), "backtrace should have been preallocated");
2060
2061 ResourceMark rm(THREAD);
2062 vframeStream st(THREAD);
2063
2064 BacktraceBuilder bt(backtrace);
2065
2066 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2067 // methods as preallocated errors aren't created by "java" code.
2068
2069 // fill in as much stack trace as possible
2070 int chunk_count = 0;
2071 for (;!st.at_end(); st.next()) {
2072 bt.push(st.method(), st.bci(), CHECK);
2073 chunk_count++;
2074
2075 // Bail-out for deep stacks
2076 if (chunk_count >= trace_chunk_size) break;
2077 }
2078 set_depth(throwable(), chunk_count);
2079 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2080
2081 // We support the Throwable immutability protocol defined for Java 7.
2082 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2083 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2084 }
2085
2086 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2087 objArrayHandle stack_trace_array_h, TRAPS) {
2088
2089 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2090 THROW(vmSymbols::java_lang_NullPointerException());
2091 }
2092
2093 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2094
2095 if (stack_trace_array_h->length() != depth(throwable())) {
2096 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2097 }
2098
2099 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2100 BacktraceIterator iter(result, THREAD);
2101
2102 int index = 0;
2103 while (iter.repeat()) {
2104 BacktraceElement bte = iter.next(THREAD);
2105
2106 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2107
2108 if (stack_trace_element.is_null()) {
2109 THROW(vmSymbols::java_lang_NullPointerException());
2110 }
2111
2112 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2113 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2114
2115 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2116 method,
2117 bte._version,
2118 bte._bci,
2119 bte._cpref, CHECK);
2120 }
2121 }
2122
2123 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2124 // Allocate java.lang.StackTraceElement instance
2125 Klass* k = SystemDictionary::StackTraceElement_klass();
2126 assert(k != NULL, "must be loaded in 1.4+");
2127 instanceKlassHandle ik (THREAD, k);
2128 if (ik->should_be_initialized()) {
2129 ik->initialize(CHECK_0);
2130 }
2131
2132 Handle element = ik->allocate_instance_handle(CHECK_0);
2133
2134 int cpref = method->name_index();
2135 int version = method->constants()->version();
2136 fill_in(element, method->method_holder(), method, version, bci, cpref, CHECK_0);
2137 return element();
2138 }
2139
2140 void java_lang_StackTraceElement::fill_in(Handle element,
2141 InstanceKlass* holder, const methodHandle& method,
2142 int version, int bci, int cpref, TRAPS) {
2143 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2144
2145 // Fill in class name
2146 ResourceMark rm(THREAD);
2147 const char* str = holder->external_name();
2148 oop classname = StringTable::intern((char*) str, CHECK);
2149 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2150
2151 // The method can be NULL if the requested class version is gone
2152 Symbol* sym = !method.is_null() ? method->name() : holder->constants()->symbol_at(cpref);
2153
2154 // Fill in method name
2155 oop methodname = StringTable::intern(sym, CHECK);
2156 java_lang_StackTraceElement::set_methodName(element(), methodname);
2157
2158 // Fill in module name and version
2159 ModuleEntry* module = holder->module();
2160 if (module->is_named()) {
2161 oop module_name = StringTable::intern(module->name(), CHECK);
2162 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2163 oop module_version;
2164 if (module->version() != NULL) {
2165 module_version = StringTable::intern(module->version(), CHECK);
2166 } else {
2167 module_version = NULL;
2168 }
2169 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2170 }
2171
2172 if (!version_matches(method(), version)) {
2173 // The method was redefined, accurate line number information isn't available
2174 java_lang_StackTraceElement::set_fileName(element(), NULL);
2175 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2176 } else {
2177 // Fill in source file name and line number.
2178 Symbol* source = Backtrace::get_source_file_name(holder, version);
2179 if (ShowHiddenFrames && source == NULL)
2180 source = vmSymbols::unknown_class_name();
2181 oop filename = StringTable::intern(source, CHECK);
2182 java_lang_StackTraceElement::set_fileName(element(), filename);
2183
2184 int line_number = Backtrace::get_line_number(method, bci);
2185 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2186 }
2187 }
2188
2189 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2190 if (MemberNameInStackFrame) {
2191 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2192 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2193 // we should expand MemberName::name when Throwable uses StackTrace
2194 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2195 return method;
2196 } else {
2197 short mid = stackFrame->short_field(_mid_offset);
2198 short version = stackFrame->short_field(_version_offset);
2199 return holder->method_with_orig_idnum(mid, version);
2200 }
2201 }
2202
2203 Symbol* java_lang_StackFrameInfo::get_file_name(Handle stackFrame, InstanceKlass* holder) {
2204 if (MemberNameInStackFrame) {
2205 return holder->source_file_name();
2206 } else {
2207 short version = stackFrame->short_field(_version_offset);
2208 return Backtrace::get_source_file_name(holder, version);
2209 }
2210 }
2211
2212 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci) {
2213 // set Method* or mid/cpref
2214 if (MemberNameInStackFrame) {
2215 oop mname = stackFrame->obj_field(_memberName_offset);
2216 InstanceKlass* ik = method->method_holder();
2217 CallInfo info(method(), ik);
2218 MethodHandles::init_method_MemberName(mname, info);
2219 } else {
2220 int mid = method->orig_method_idnum();
2221 int cpref = method->name_index();
2222 assert((jushort)mid == mid, "mid should be short");
2223 assert((jushort)cpref == cpref, "cpref should be short");
2224 java_lang_StackFrameInfo::set_mid(stackFrame(), (short)mid);
2225 java_lang_StackFrameInfo::set_cpref(stackFrame(), (short)cpref);
2226 }
2227 // set bci
2228 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2229 // method may be redefined; store the version
2230 int version = method->constants()->version();
2231 assert((jushort)version == version, "version should be short");
2232 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2233 }
2234
2235 void java_lang_StackFrameInfo::fill_methodInfo(Handle stackFrame, TRAPS) {
2236 ResourceMark rm(THREAD);
2237 oop k = stackFrame->obj_field(_declaringClass_offset);
2238 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(k));
2239 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2240 int bci = stackFrame->int_field(_bci_offset);
2241
2242 // The method can be NULL if the requested class version is gone
2243 Symbol* sym = (method != NULL) ? method->name() : NULL;
2244 if (MemberNameInStackFrame) {
2245 assert(sym != NULL, "MemberName must have method name");
2246 } else {
2247 // The method can be NULL if the requested class version is gone
2248 if (sym == NULL) {
2249 short cpref = stackFrame->short_field(_cpref_offset);
2250 sym = holder->constants()->symbol_at(cpref);
2251 }
2252 }
2253
2254 // set method name
2255 oop methodname = StringTable::intern(sym, CHECK);
2256 java_lang_StackFrameInfo::set_methodName(stackFrame(), methodname);
2257
2258 // set file name and line number
2259 Symbol* source = get_file_name(stackFrame, holder);
2260 if (source != NULL) {
2261 oop filename = StringTable::intern(source, CHECK);
2262 java_lang_StackFrameInfo::set_fileName(stackFrame(), filename);
2263 }
2264
2265 // if the method has been redefined, the bci is no longer applicable
2266 short version = stackFrame->short_field(_version_offset);
2267 if (version_matches(method, version)) {
2268 int line_number = Backtrace::get_line_number(method, bci);
2269 java_lang_StackFrameInfo::set_lineNumber(stackFrame(), line_number);
2270 }
2271 }
2272
2273 void java_lang_StackFrameInfo::compute_offsets() {
2274 Klass* k = SystemDictionary::StackFrameInfo_klass();
2275 compute_offset(_declaringClass_offset, k, vmSymbols::declaringClass_name(), vmSymbols::class_signature());
2276 compute_offset(_memberName_offset, k, vmSymbols::memberName_name(), vmSymbols::object_signature());
2277 compute_offset(_bci_offset, k, vmSymbols::bci_name(), vmSymbols::int_signature());
2278 compute_offset(_methodName_offset, k, vmSymbols::methodName_name(), vmSymbols::string_signature());
2279 compute_offset(_fileName_offset, k, vmSymbols::fileName_name(), vmSymbols::string_signature());
2280 compute_offset(_lineNumber_offset, k, vmSymbols::lineNumber_name(), vmSymbols::int_signature());
2281 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2282 }
2283
2284 void java_lang_LiveStackFrameInfo::compute_offsets() {
2285 Klass* k = SystemDictionary::LiveStackFrameInfo_klass();
2286 compute_offset(_monitors_offset, k, vmSymbols::monitors_name(), vmSymbols::object_array_signature());
2287 compute_offset(_locals_offset, k, vmSymbols::locals_name(), vmSymbols::object_array_signature());
2288 compute_offset(_operands_offset, k, vmSymbols::operands_name(), vmSymbols::object_array_signature());
2289 }
2290
2291 void java_lang_reflect_AccessibleObject::compute_offsets() {
2292 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
2293 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
2294 }
2295
2296 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2297 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2298 return (jboolean) reflect->bool_field(override_offset);
2299 }
2300
2301 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2302 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2303 reflect->bool_field_put(override_offset, (int) value);
2304 }
2305
2306 void java_lang_reflect_Method::compute_offsets() {
2307 Klass* k = SystemDictionary::reflect_Method_klass();
2308 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2309 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2310 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
2311 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2312 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2313 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2314 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2315 // The generic signature and annotations fields are only present in 1.5
2316 signature_offset = -1;
2317 annotations_offset = -1;
2318 parameter_annotations_offset = -1;
2319 annotation_default_offset = -1;
2320 type_annotations_offset = -1;
2321 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2322 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2323 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2324 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
2325 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2326 }
2327
2328 Handle java_lang_reflect_Method::create(TRAPS) {
2329 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2330 Klass* klass = SystemDictionary::reflect_Method_klass();
2331 // This class is eagerly initialized during VM initialization, since we keep a refence
2332 // to one of the methods
2333 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2334 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2335 }
2336
2337 oop java_lang_reflect_Method::clazz(oop reflect) {
2338 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2339 return reflect->obj_field(clazz_offset);
2340 }
2341
2342 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2343 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2344 reflect->obj_field_put(clazz_offset, value);
2345 }
2346
2347 int java_lang_reflect_Method::slot(oop reflect) {
2348 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2349 return reflect->int_field(slot_offset);
2350 }
2351
2352 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2353 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2354 reflect->int_field_put(slot_offset, value);
2355 }
2356
2357 oop java_lang_reflect_Method::name(oop method) {
2358 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2359 return method->obj_field(name_offset);
2360 }
2361
2362 void java_lang_reflect_Method::set_name(oop method, oop value) {
2363 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2364 method->obj_field_put(name_offset, value);
2365 }
2366
2367 oop java_lang_reflect_Method::return_type(oop method) {
2368 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2369 return method->obj_field(returnType_offset);
2370 }
2371
2372 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2373 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2374 method->obj_field_put(returnType_offset, value);
2375 }
2376
2377 oop java_lang_reflect_Method::parameter_types(oop method) {
2378 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2379 return method->obj_field(parameterTypes_offset);
2380 }
2381
2382 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2383 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2384 method->obj_field_put(parameterTypes_offset, value);
2385 }
2386
2387 oop java_lang_reflect_Method::exception_types(oop method) {
2388 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2389 return method->obj_field(exceptionTypes_offset);
2390 }
2391
2392 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2393 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2394 method->obj_field_put(exceptionTypes_offset, value);
2395 }
2396
2397 int java_lang_reflect_Method::modifiers(oop method) {
2398 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2399 return method->int_field(modifiers_offset);
2400 }
2401
2402 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2403 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2404 method->int_field_put(modifiers_offset, value);
2405 }
2406
2407 bool java_lang_reflect_Method::has_signature_field() {
2408 return (signature_offset >= 0);
2409 }
2410
2411 oop java_lang_reflect_Method::signature(oop method) {
2412 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2413 assert(has_signature_field(), "signature field must be present");
2414 return method->obj_field(signature_offset);
2415 }
2416
2417 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2418 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2419 assert(has_signature_field(), "signature field must be present");
2420 method->obj_field_put(signature_offset, value);
2421 }
2422
2423 bool java_lang_reflect_Method::has_annotations_field() {
2424 return (annotations_offset >= 0);
2425 }
2426
2427 oop java_lang_reflect_Method::annotations(oop method) {
2428 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2429 assert(has_annotations_field(), "annotations field must be present");
2430 return method->obj_field(annotations_offset);
2431 }
2432
2433 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2434 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2435 assert(has_annotations_field(), "annotations field must be present");
2436 method->obj_field_put(annotations_offset, value);
2437 }
2438
2439 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2440 return (parameter_annotations_offset >= 0);
2441 }
2442
2443 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2444 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2445 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2446 return method->obj_field(parameter_annotations_offset);
2447 }
2448
2449 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2450 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2451 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2452 method->obj_field_put(parameter_annotations_offset, value);
2453 }
2454
2455 bool java_lang_reflect_Method::has_annotation_default_field() {
2456 return (annotation_default_offset >= 0);
2457 }
2458
2459 oop java_lang_reflect_Method::annotation_default(oop method) {
2460 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2461 assert(has_annotation_default_field(), "annotation default field must be present");
2462 return method->obj_field(annotation_default_offset);
2463 }
2464
2465 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2466 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2467 assert(has_annotation_default_field(), "annotation default field must be present");
2468 method->obj_field_put(annotation_default_offset, value);
2469 }
2470
2471 bool java_lang_reflect_Method::has_type_annotations_field() {
2472 return (type_annotations_offset >= 0);
2473 }
2474
2475 oop java_lang_reflect_Method::type_annotations(oop method) {
2476 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2477 assert(has_type_annotations_field(), "type_annotations field must be present");
2478 return method->obj_field(type_annotations_offset);
2479 }
2480
2481 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2482 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2483 assert(has_type_annotations_field(), "type_annotations field must be present");
2484 method->obj_field_put(type_annotations_offset, value);
2485 }
2486
2487 void java_lang_reflect_Constructor::compute_offsets() {
2488 Klass* k = SystemDictionary::reflect_Constructor_klass();
2489 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2490 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2491 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2492 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2493 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2494 // The generic signature and annotations fields are only present in 1.5
2495 signature_offset = -1;
2496 annotations_offset = -1;
2497 parameter_annotations_offset = -1;
2498 type_annotations_offset = -1;
2499 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2500 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2501 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2502 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2503 }
2504
2505 Handle java_lang_reflect_Constructor::create(TRAPS) {
2506 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2507 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2508 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2509 instanceKlassHandle klass (THREAD, k);
2510 // Ensure it is initialized
2511 klass->initialize(CHECK_NH);
2512 return klass->allocate_instance_handle(THREAD);
2513 }
2514
2515 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2516 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2517 return reflect->obj_field(clazz_offset);
2518 }
2519
2520 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2521 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2522 reflect->obj_field_put(clazz_offset, value);
2523 }
2524
2525 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2526 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2527 return constructor->obj_field(parameterTypes_offset);
2528 }
2529
2530 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2531 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2532 constructor->obj_field_put(parameterTypes_offset, value);
2533 }
2534
2535 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2536 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2537 return constructor->obj_field(exceptionTypes_offset);
2538 }
2539
2540 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2541 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2542 constructor->obj_field_put(exceptionTypes_offset, value);
2543 }
2544
2545 int java_lang_reflect_Constructor::slot(oop reflect) {
2546 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2547 return reflect->int_field(slot_offset);
2548 }
2549
2550 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2551 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2552 reflect->int_field_put(slot_offset, value);
2553 }
2554
2555 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2556 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2557 return constructor->int_field(modifiers_offset);
2558 }
2559
2560 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2561 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2562 constructor->int_field_put(modifiers_offset, value);
2563 }
2564
2565 bool java_lang_reflect_Constructor::has_signature_field() {
2566 return (signature_offset >= 0);
2567 }
2568
2569 oop java_lang_reflect_Constructor::signature(oop constructor) {
2570 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2571 assert(has_signature_field(), "signature field must be present");
2572 return constructor->obj_field(signature_offset);
2573 }
2574
2575 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2576 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2577 assert(has_signature_field(), "signature field must be present");
2578 constructor->obj_field_put(signature_offset, value);
2579 }
2580
2581 bool java_lang_reflect_Constructor::has_annotations_field() {
2582 return (annotations_offset >= 0);
2583 }
2584
2585 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2586 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2587 assert(has_annotations_field(), "annotations field must be present");
2588 return constructor->obj_field(annotations_offset);
2589 }
2590
2591 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2592 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2593 assert(has_annotations_field(), "annotations field must be present");
2594 constructor->obj_field_put(annotations_offset, value);
2595 }
2596
2597 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2598 return (parameter_annotations_offset >= 0);
2599 }
2600
2601 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2602 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2603 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2604 return method->obj_field(parameter_annotations_offset);
2605 }
2606
2607 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2608 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2609 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2610 method->obj_field_put(parameter_annotations_offset, value);
2611 }
2612
2613 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2614 return (type_annotations_offset >= 0);
2615 }
2616
2617 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2618 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2619 assert(has_type_annotations_field(), "type_annotations field must be present");
2620 return constructor->obj_field(type_annotations_offset);
2621 }
2622
2623 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2624 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2625 assert(has_type_annotations_field(), "type_annotations field must be present");
2626 constructor->obj_field_put(type_annotations_offset, value);
2627 }
2628
2629 void java_lang_reflect_Field::compute_offsets() {
2630 Klass* k = SystemDictionary::reflect_Field_klass();
2631 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2632 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2633 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2634 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2635 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2636 // The generic signature and annotations fields are only present in 1.5
2637 signature_offset = -1;
2638 annotations_offset = -1;
2639 type_annotations_offset = -1;
2640 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2641 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2642 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2643 }
2644
2645 Handle java_lang_reflect_Field::create(TRAPS) {
2646 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2647 Symbol* name = vmSymbols::java_lang_reflect_Field();
2648 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2649 instanceKlassHandle klass (THREAD, k);
2650 // Ensure it is initialized
2651 klass->initialize(CHECK_NH);
2652 return klass->allocate_instance_handle(THREAD);
2653 }
2654
2655 oop java_lang_reflect_Field::clazz(oop reflect) {
2656 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2657 return reflect->obj_field(clazz_offset);
2658 }
2659
2660 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2661 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2662 reflect->obj_field_put(clazz_offset, value);
2663 }
2664
2665 oop java_lang_reflect_Field::name(oop field) {
2666 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2667 return field->obj_field(name_offset);
2668 }
2669
2670 void java_lang_reflect_Field::set_name(oop field, oop value) {
2671 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2672 field->obj_field_put(name_offset, value);
2673 }
2674
2675 oop java_lang_reflect_Field::type(oop field) {
2676 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2677 return field->obj_field(type_offset);
2678 }
2679
2680 void java_lang_reflect_Field::set_type(oop field, oop value) {
2681 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2682 field->obj_field_put(type_offset, value);
2683 }
2684
2685 int java_lang_reflect_Field::slot(oop reflect) {
2686 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2687 return reflect->int_field(slot_offset);
2688 }
2689
2690 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2691 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2692 reflect->int_field_put(slot_offset, value);
2693 }
2694
2695 int java_lang_reflect_Field::modifiers(oop field) {
2696 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2697 return field->int_field(modifiers_offset);
2698 }
2699
2700 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2701 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2702 field->int_field_put(modifiers_offset, value);
2703 }
2704
2705 bool java_lang_reflect_Field::has_signature_field() {
2706 return (signature_offset >= 0);
2707 }
2708
2709 oop java_lang_reflect_Field::signature(oop field) {
2710 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2711 assert(has_signature_field(), "signature field must be present");
2712 return field->obj_field(signature_offset);
2713 }
2714
2715 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2716 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2717 assert(has_signature_field(), "signature field must be present");
2718 field->obj_field_put(signature_offset, value);
2719 }
2720
2721 bool java_lang_reflect_Field::has_annotations_field() {
2722 return (annotations_offset >= 0);
2723 }
2724
2725 oop java_lang_reflect_Field::annotations(oop field) {
2726 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2727 assert(has_annotations_field(), "annotations field must be present");
2728 return field->obj_field(annotations_offset);
2729 }
2730
2731 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2732 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2733 assert(has_annotations_field(), "annotations field must be present");
2734 field->obj_field_put(annotations_offset, value);
2735 }
2736
2737 bool java_lang_reflect_Field::has_type_annotations_field() {
2738 return (type_annotations_offset >= 0);
2739 }
2740
2741 oop java_lang_reflect_Field::type_annotations(oop field) {
2742 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2743 assert(has_type_annotations_field(), "type_annotations field must be present");
2744 return field->obj_field(type_annotations_offset);
2745 }
2746
2747 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2748 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2749 assert(has_type_annotations_field(), "type_annotations field must be present");
2750 field->obj_field_put(type_annotations_offset, value);
2751 }
2752
2753 void sun_reflect_ConstantPool::compute_offsets() {
2754 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2755 // This null test can be removed post beta
2756 if (k != NULL) {
2757 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2758 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2759 }
2760 }
2761
2762 void java_lang_reflect_Parameter::compute_offsets() {
2763 Klass* k = SystemDictionary::reflect_Parameter_klass();
2764 if(NULL != k) {
2765 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2766 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2767 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2768 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2769 }
2770 }
2771
2772 Handle java_lang_reflect_Parameter::create(TRAPS) {
2773 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2774 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2775 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2776 instanceKlassHandle klass (THREAD, k);
2777 // Ensure it is initialized
2778 klass->initialize(CHECK_NH);
2779 return klass->allocate_instance_handle(THREAD);
2780 }
2781
2782 oop java_lang_reflect_Parameter::name(oop param) {
2783 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2784 return param->obj_field(name_offset);
2785 }
2786
2787 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2788 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2789 param->obj_field_put(name_offset, value);
2790 }
2791
2792 int java_lang_reflect_Parameter::modifiers(oop param) {
2793 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2794 return param->int_field(modifiers_offset);
2795 }
2796
2797 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2798 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2799 param->int_field_put(modifiers_offset, value);
2800 }
2801
2802 int java_lang_reflect_Parameter::index(oop param) {
2803 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2804 return param->int_field(index_offset);
2805 }
2806
2807 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2808 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2809 param->int_field_put(index_offset, value);
2810 }
2811
2812 oop java_lang_reflect_Parameter::executable(oop param) {
2813 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2814 return param->obj_field(executable_offset);
2815 }
2816
2817 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2818 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2819 param->obj_field_put(executable_offset, value);
2820 }
2821
2822
2823 int java_lang_reflect_Module::loader_offset;
2824 int java_lang_reflect_Module::name_offset;
2825 int java_lang_reflect_Module::_module_entry_offset = -1;
2826
2827 Handle java_lang_reflect_Module::create(Handle loader, Handle module_name, TRAPS) {
2828 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2829
2830 Symbol* name = vmSymbols::java_lang_reflect_Module();
2831 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2832 instanceKlassHandle klass (THREAD, k);
2833
2834 Handle jlrmh = klass->allocate_instance_handle(CHECK_NH);
2835 JavaValue result(T_VOID);
2836 JavaCalls::call_special(&result, jlrmh, KlassHandle(THREAD, klass()),
2837 vmSymbols::object_initializer_name(),
2838 vmSymbols::java_lang_reflect_module_init_signature(),
2839 loader, module_name, CHECK_NH);
2840 return jlrmh;
2841 }
2842
2843 void java_lang_reflect_Module::compute_offsets() {
2844 Klass* k = SystemDictionary::reflect_Module_klass();
2845 if(NULL != k) {
2846 compute_offset(loader_offset, k, vmSymbols::loader_name(), vmSymbols::classloader_signature());
2847 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2848 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2849 }
2850 }
2851
2852
2853 oop java_lang_reflect_Module::loader(oop module) {
2854 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2855 return module->obj_field(loader_offset);
2856 }
2857
2858 void java_lang_reflect_Module::set_loader(oop module, oop value) {
2859 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2860 module->obj_field_put(loader_offset, value);
2861 }
2862
2863 oop java_lang_reflect_Module::name(oop module) {
2864 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2865 return module->obj_field(name_offset);
2866 }
2867
2868 void java_lang_reflect_Module::set_name(oop module, oop value) {
2869 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2870 module->obj_field_put(name_offset, value);
2871 }
2872
2873 ModuleEntry* java_lang_reflect_Module::module_entry(oop module, TRAPS) {
2874 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
2875 assert(module != NULL, "module can't be null");
2876 assert(module->is_oop(), "module must be oop");
2877
2878 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
2879 if (module_entry == NULL) {
2880 // If the inject field containing the ModuleEntry* is null then return the
2881 // class loader's unnamed module.
2882 oop loader = java_lang_reflect_Module::loader(module);
2883 Handle h_loader = Handle(THREAD, loader);
2884 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL);
2885 return loader_cld->modules()->unnamed_module();
2886 }
2887 return module_entry;
2888 }
2889
2890 void java_lang_reflect_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
2891 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
2892 assert(module != NULL, "module can't be null");
2893 assert(module->is_oop(), "module must be oop");
2894 module->address_field_put(_module_entry_offset, (address)module_entry);
2895 }
2896
2897 Handle sun_reflect_ConstantPool::create(TRAPS) {
2898 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2899 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2900 instanceKlassHandle klass (THREAD, k);
2901 // Ensure it is initialized
2902 klass->initialize(CHECK_NH);
2903 return klass->allocate_instance_handle(THREAD);
2904 }
2905
2906
2907 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2908 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2909 oop mirror = value->pool_holder()->java_mirror();
2910 // Save the mirror to get back the constant pool.
2911 reflect->obj_field_put(_oop_offset, mirror);
2912 }
2913
2914 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) {
2915 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2916
2917 oop mirror = reflect->obj_field(_oop_offset);
2918 Klass* k = java_lang_Class::as_Klass(mirror);
2919 assert(k->is_instance_klass(), "Must be");
2920
2921 // Get the constant pool back from the klass. Since class redefinition
2922 // merges the new constant pool into the old, this is essentially the
2923 // same constant pool as the original. If constant pool merging is
2924 // no longer done in the future, this will have to change to save
2925 // the original.
2926 return InstanceKlass::cast(k)->constants();
2927 }
2928
2929 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2930 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2931 // This null test can be removed post beta
2932 if (k != NULL) {
2933 compute_offset(_base_offset, k,
2934 vmSymbols::base_name(), vmSymbols::object_signature());
2935 }
2936 }
2937
2938 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2939 Klass* k = SystemDictionary::box_klass(type);
2940 if (k == NULL) return NULL;
2941 instanceKlassHandle h (THREAD, k);
2942 if (!h->is_initialized()) h->initialize(CHECK_0);
2943 return h->allocate_instance(THREAD);
2944 }
2945
2946
2947 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2948 oop box = initialize_and_allocate(type, CHECK_0);
2949 if (box == NULL) return NULL;
2950 switch (type) {
2951 case T_BOOLEAN:
2952 box->bool_field_put(value_offset, value->z);
2953 break;
2954 case T_CHAR:
2955 box->char_field_put(value_offset, value->c);
2956 break;
2957 case T_FLOAT:
2958 box->float_field_put(value_offset, value->f);
2959 break;
2960 case T_DOUBLE:
2961 box->double_field_put(long_value_offset, value->d);
2962 break;
2963 case T_BYTE:
2964 box->byte_field_put(value_offset, value->b);
2965 break;
2966 case T_SHORT:
2967 box->short_field_put(value_offset, value->s);
2968 break;
2969 case T_INT:
2970 box->int_field_put(value_offset, value->i);
2971 break;
2972 case T_LONG:
2973 box->long_field_put(long_value_offset, value->j);
2974 break;
2975 default:
2976 return NULL;
2977 }
2978 return box;
2979 }
2980
2981
2982 BasicType java_lang_boxing_object::basic_type(oop box) {
2983 if (box == NULL) return T_ILLEGAL;
2984 BasicType type = SystemDictionary::box_klass_type(box->klass());
2985 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2986 return T_ILLEGAL;
2987 return type;
2988 }
2989
2990
2991 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2992 BasicType type = SystemDictionary::box_klass_type(box->klass());
2993 switch (type) {
2994 case T_BOOLEAN:
2995 value->z = box->bool_field(value_offset);
2996 break;
2997 case T_CHAR:
2998 value->c = box->char_field(value_offset);
2999 break;
3000 case T_FLOAT:
3001 value->f = box->float_field(value_offset);
3002 break;
3003 case T_DOUBLE:
3004 value->d = box->double_field(long_value_offset);
3005 break;
3006 case T_BYTE:
3007 value->b = box->byte_field(value_offset);
3008 break;
3009 case T_SHORT:
3010 value->s = box->short_field(value_offset);
3011 break;
3012 case T_INT:
3013 value->i = box->int_field(value_offset);
3014 break;
3015 case T_LONG:
3016 value->j = box->long_field(long_value_offset);
3017 break;
3018 default:
3019 return T_ILLEGAL;
3020 } // end switch
3021 return type;
3022 }
3023
3024
3025 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3026 BasicType type = SystemDictionary::box_klass_type(box->klass());
3027 switch (type) {
3028 case T_BOOLEAN:
3029 box->bool_field_put(value_offset, value->z);
3030 break;
3031 case T_CHAR:
3032 box->char_field_put(value_offset, value->c);
3033 break;
3034 case T_FLOAT:
3035 box->float_field_put(value_offset, value->f);
3036 break;
3037 case T_DOUBLE:
3038 box->double_field_put(long_value_offset, value->d);
3039 break;
3040 case T_BYTE:
3041 box->byte_field_put(value_offset, value->b);
3042 break;
3043 case T_SHORT:
3044 box->short_field_put(value_offset, value->s);
3045 break;
3046 case T_INT:
3047 box->int_field_put(value_offset, value->i);
3048 break;
3049 case T_LONG:
3050 box->long_field_put(long_value_offset, value->j);
3051 break;
3052 default:
3053 return T_ILLEGAL;
3054 } // end switch
3055 return type;
3056 }
3057
3058
3059 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3060 switch (type) {
3061 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3062 case T_CHAR: st->print("%d", value->c); break;
3063 case T_BYTE: st->print("%d", value->b); break;
3064 case T_SHORT: st->print("%d", value->s); break;
3065 case T_INT: st->print("%d", value->i); break;
3066 case T_LONG: st->print(INT64_FORMAT, value->j); break;
3067 case T_FLOAT: st->print("%f", value->f); break;
3068 case T_DOUBLE: st->print("%lf", value->d); break;
3069 default: st->print("type %d?", type); break;
3070 }
3071 }
3072
3073
3074 // Support for java_lang_ref_Reference
3075 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
3076 InstanceKlass* ik = SystemDictionary::Reference_klass();
3077 address addr = ik->static_field_addr(static_lock_offset);
3078 return (HeapWord*) addr;
3079 }
3080
3081 oop java_lang_ref_Reference::pending_list_lock() {
3082 InstanceKlass* ik = SystemDictionary::Reference_klass();
3083 address addr = ik->static_field_addr(static_lock_offset);
3084 if (UseCompressedOops) {
3085 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
3086 } else {
3087 return oopDesc::load_decode_heap_oop((oop*)addr);
3088 }
3089 }
3090
3091 HeapWord *java_lang_ref_Reference::pending_list_addr() {
3092 InstanceKlass* ik = SystemDictionary::Reference_klass();
3093 address addr = ik->static_field_addr(static_pending_offset);
3094 // XXX This might not be HeapWord aligned, almost rather be char *.
3095 return (HeapWord*)addr;
3096 }
3097
3098 oop java_lang_ref_Reference::pending_list() {
3099 char *addr = (char *)pending_list_addr();
3100 if (UseCompressedOops) {
3101 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
3102 } else {
3103 return oopDesc::load_decode_heap_oop((oop*)addr);
3104 }
3105 }
3106
3107
3108 // Support for java_lang_ref_SoftReference
3109
3110 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3111 return ref->long_field(timestamp_offset);
3112 }
3113
3114 jlong java_lang_ref_SoftReference::clock() {
3115 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3116 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3117 return *offset;
3118 }
3119
3120 void java_lang_ref_SoftReference::set_clock(jlong value) {
3121 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3122 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3123 *offset = value;
3124 }
3125
3126 // Support for java_lang_invoke_DirectMethodHandle
3127
3128 int java_lang_invoke_DirectMethodHandle::_member_offset;
3129
3130 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3131 oop member_name = NULL;
3132 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
3133 assert(is_dmh, "a DirectMethodHandle oop is expected");
3134 if (is_dmh) {
3135 member_name = dmh->obj_field(member_offset_in_bytes());
3136 }
3137 return member_name;
3138 }
3139
3140 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3141 Klass* klass_oop = SystemDictionary::DirectMethodHandle_klass();
3142 if (klass_oop != NULL) {
3143 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
3144 }
3145 }
3146
3147 // Support for java_lang_invoke_MethodHandle
3148
3149 int java_lang_invoke_MethodHandle::_type_offset;
3150 int java_lang_invoke_MethodHandle::_form_offset;
3151
3152 int java_lang_invoke_MemberName::_clazz_offset;
3153 int java_lang_invoke_MemberName::_name_offset;
3154 int java_lang_invoke_MemberName::_type_offset;
3155 int java_lang_invoke_MemberName::_flags_offset;
3156 int java_lang_invoke_MemberName::_vmtarget_offset;
3157 int java_lang_invoke_MemberName::_vmloader_offset;
3158 int java_lang_invoke_MemberName::_vmindex_offset;
3159
3160 int java_lang_invoke_LambdaForm::_vmentry_offset;
3161
3162 void java_lang_invoke_MethodHandle::compute_offsets() {
3163 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
3164 if (klass_oop != NULL) {
3165 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
3166 compute_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
3167 }
3168 }
3169
3170 void java_lang_invoke_MemberName::compute_offsets() {
3171 Klass* klass_oop = SystemDictionary::MemberName_klass();
3172 if (klass_oop != NULL) {
3173 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
3174 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
3175 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
3176 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
3177 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3178 }
3179 }
3180
3181 void java_lang_invoke_LambdaForm::compute_offsets() {
3182 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
3183 if (klass_oop != NULL) {
3184 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
3185 }
3186 }
3187
3188 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3189 return obj != NULL && is_subclass(obj->klass());
3190 }
3191
3192
3193 oop java_lang_invoke_MethodHandle::type(oop mh) {
3194 return mh->obj_field(_type_offset);
3195 }
3196
3197 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3198 mh->obj_field_put(_type_offset, mtype);
3199 }
3200
3201 oop java_lang_invoke_MethodHandle::form(oop mh) {
3202 assert(_form_offset != 0, "");
3203 return mh->obj_field(_form_offset);
3204 }
3205
3206 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3207 assert(_form_offset != 0, "");
3208 mh->obj_field_put(_form_offset, lform);
3209 }
3210
3211 /// MemberName accessors
3212
3213 oop java_lang_invoke_MemberName::clazz(oop mname) {
3214 assert(is_instance(mname), "wrong type");
3215 return mname->obj_field(_clazz_offset);
3216 }
3217
3218 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3219 assert(is_instance(mname), "wrong type");
3220 mname->obj_field_put(_clazz_offset, clazz);
3221 }
3222
3223 oop java_lang_invoke_MemberName::name(oop mname) {
3224 assert(is_instance(mname), "wrong type");
3225 return mname->obj_field(_name_offset);
3226 }
3227
3228 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3229 assert(is_instance(mname), "wrong type");
3230 mname->obj_field_put(_name_offset, name);
3231 }
3232
3233 oop java_lang_invoke_MemberName::type(oop mname) {
3234 assert(is_instance(mname), "wrong type");
3235 return mname->obj_field(_type_offset);
3236 }
3237
3238 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3239 assert(is_instance(mname), "wrong type");
3240 mname->obj_field_put(_type_offset, type);
3241 }
3242
3243 int java_lang_invoke_MemberName::flags(oop mname) {
3244 assert(is_instance(mname), "wrong type");
3245 return mname->int_field(_flags_offset);
3246 }
3247
3248 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3249 assert(is_instance(mname), "wrong type");
3250 mname->int_field_put(_flags_offset, flags);
3251 }
3252
3253 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
3254 assert(is_instance(mname), "wrong type");
3255 return (Metadata*)mname->address_field(_vmtarget_offset);
3256 }
3257
3258 bool java_lang_invoke_MemberName::is_method(oop mname) {
3259 assert(is_instance(mname), "must be MemberName");
3260 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3261 }
3262
3263 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
3264 assert(is_instance(mname), "wrong type");
3265 // check the type of the vmtarget
3266 oop dependency = NULL;
3267 if (ref != NULL) {
3268 switch (flags(mname) & (MN_IS_METHOD |
3269 MN_IS_CONSTRUCTOR |
3270 MN_IS_FIELD)) {
3271 case MN_IS_METHOD:
3272 case MN_IS_CONSTRUCTOR:
3273 assert(ref->is_method(), "should be a method");
3274 dependency = ((Method*)ref)->method_holder()->java_mirror();
3275 break;
3276 case MN_IS_FIELD:
3277 assert(ref->is_klass(), "should be a class");
3278 dependency = ((Klass*)ref)->java_mirror();
3279 break;
3280 default:
3281 ShouldNotReachHere();
3282 }
3283 }
3284 mname->address_field_put(_vmtarget_offset, (address)ref);
3285 // Add a reference to the loader (actually mirror because anonymous classes will not have
3286 // distinct loaders) to ensure the metadata is kept alive
3287 // This mirror may be different than the one in clazz field.
3288 mname->obj_field_put(_vmloader_offset, dependency);
3289 }
3290
3291 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3292 assert(is_instance(mname), "wrong type");
3293 return (intptr_t) mname->address_field(_vmindex_offset);
3294 }
3295
3296 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3297 assert(is_instance(mname), "wrong type");
3298 mname->address_field_put(_vmindex_offset, (address) index);
3299 }
3300
3301 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3302 assert(is_instance(lform), "wrong type");
3303 return lform->obj_field(_vmentry_offset);
3304 }
3305
3306
3307 // Support for java_lang_invoke_MethodType
3308
3309 int java_lang_invoke_MethodType::_rtype_offset;
3310 int java_lang_invoke_MethodType::_ptypes_offset;
3311
3312 void java_lang_invoke_MethodType::compute_offsets() {
3313 Klass* k = SystemDictionary::MethodType_klass();
3314 if (k != NULL) {
3315 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
3316 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
3317 }
3318 }
3319
3320 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3321 st->print("(");
3322 objArrayOop pts = ptypes(mt);
3323 for (int i = 0, limit = pts->length(); i < limit; i++) {
3324 java_lang_Class::print_signature(pts->obj_at(i), st);
3325 }
3326 st->print(")");
3327 java_lang_Class::print_signature(rtype(mt), st);
3328 }
3329
3330 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3331 ResourceMark rm;
3332 stringStream buffer(128);
3333 print_signature(mt, &buffer);
3334 const char* sigstr = buffer.base();
3335 int siglen = (int) buffer.size();
3336 Symbol *name;
3337 if (!intern_if_not_found) {
3338 name = SymbolTable::probe(sigstr, siglen);
3339 } else {
3340 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3341 }
3342 return name;
3343 }
3344
3345 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3346 if (mt1 == mt2)
3347 return true;
3348 if (rtype(mt1) != rtype(mt2))
3349 return false;
3350 if (ptype_count(mt1) != ptype_count(mt2))
3351 return false;
3352 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3353 if (ptype(mt1, i) != ptype(mt2, i))
3354 return false;
3355 }
3356 return true;
3357 }
3358
3359 oop java_lang_invoke_MethodType::rtype(oop mt) {
3360 assert(is_instance(mt), "must be a MethodType");
3361 return mt->obj_field(_rtype_offset);
3362 }
3363
3364 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3365 assert(is_instance(mt), "must be a MethodType");
3366 return (objArrayOop) mt->obj_field(_ptypes_offset);
3367 }
3368
3369 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3370 return ptypes(mt)->obj_at(idx);
3371 }
3372
3373 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3374 return ptypes(mt)->length();
3375 }
3376
3377 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3378 objArrayOop pts = ptypes(mt);
3379 int count = pts->length();
3380 int slots = 0;
3381 for (int i = 0; i < count; i++) {
3382 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3383 slots += type2size[bt];
3384 }
3385 return slots;
3386 }
3387
3388 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3389 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3390 return type2size[bt];
3391 }
3392
3393
3394 // Support for java_lang_invoke_CallSite
3395
3396 int java_lang_invoke_CallSite::_target_offset;
3397 int java_lang_invoke_CallSite::_context_offset;
3398
3399 void java_lang_invoke_CallSite::compute_offsets() {
3400 Klass* k = SystemDictionary::CallSite_klass();
3401 if (k != NULL) {
3402 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
3403 compute_offset(_context_offset, k, vmSymbols::context_name(),
3404 vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
3405 }
3406 }
3407
3408 oop java_lang_invoke_CallSite::context(oop call_site) {
3409 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3410
3411 oop dep_oop = call_site->obj_field(_context_offset);
3412 return dep_oop;
3413 }
3414
3415 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3416
3417 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3418
3419 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3420 Klass* k = SystemDictionary::Context_klass();
3421 if (k != NULL) {
3422 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3423 }
3424 }
3425
3426 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3427 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3428 intptr_t* vmdeps_addr = (intptr_t*)call_site->address_field_addr(_vmdependencies_offset);
3429 DependencyContext dep_ctx(vmdeps_addr);
3430 return dep_ctx;
3431 }
3432
3433 // Support for java_security_AccessControlContext
3434
3435 int java_security_AccessControlContext::_context_offset = 0;
3436 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3437 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3438 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3439
3440 void java_security_AccessControlContext::compute_offsets() {
3441 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3442 fieldDescriptor fd;
3443 InstanceKlass* ik = SystemDictionary::AccessControlContext_klass();
3444
3445 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
3446 fatal("Invalid layout of java.security.AccessControlContext");
3447 }
3448 _context_offset = fd.offset();
3449
3450 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
3451 fatal("Invalid layout of java.security.AccessControlContext");
3452 }
3453 _privilegedContext_offset = fd.offset();
3454
3455 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
3456 fatal("Invalid layout of java.security.AccessControlContext");
3457 }
3458 _isPrivileged_offset = fd.offset();
3459
3460 // The offset may not be present for bootstrapping with older JDK.
3461 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
3462 _isAuthorized_offset = fd.offset();
3463 }
3464 }
3465
3466
3467 bool java_security_AccessControlContext::is_authorized(Handle context) {
3468 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3469 assert(_isAuthorized_offset != -1, "should be set");
3470 return context->bool_field(_isAuthorized_offset) != 0;
3471 }
3472
3473 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3474 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3475 // Ensure klass is initialized
3476 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3477 // Allocate result
3478 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3479 // Fill in values
3480 result->obj_field_put(_context_offset, context());
3481 result->obj_field_put(_privilegedContext_offset, privileged_context());
3482 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3483 // whitelist AccessControlContexts created by the JVM if present
3484 if (_isAuthorized_offset != -1) {
3485 result->bool_field_put(_isAuthorized_offset, true);
3486 }
3487 return result;
3488 }
3489
3490
3491 // Support for java_lang_ClassLoader
3492
3493 bool java_lang_ClassLoader::offsets_computed = false;
3494 int java_lang_ClassLoader::_loader_data_offset = -1;
3495 int java_lang_ClassLoader::parallelCapable_offset = -1;
3496 int java_lang_ClassLoader::unnamedModule_offset = -1;
3497
3498 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
3499 assert(loader != NULL && loader->is_oop(), "loader must be oop");
3500 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
3501 }
3502
3503 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3504 return *java_lang_ClassLoader::loader_data_addr(loader);
3505 }
3506
3507 void java_lang_ClassLoader::compute_offsets() {
3508 assert(!offsets_computed, "offsets should be initialized only once");
3509 offsets_computed = true;
3510
3511 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
3512 Klass* k1 = SystemDictionary::ClassLoader_klass();
3513 compute_optional_offset(parallelCapable_offset,
3514 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
3515
3516 compute_offset(unnamedModule_offset,
3517 k1, vmSymbols::unnamedModule_name(), vmSymbols::module_signature());
3518
3519 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3520 }
3521
3522 oop java_lang_ClassLoader::parent(oop loader) {
3523 assert(is_instance(loader), "loader must be oop");
3524 return loader->obj_field(parent_offset);
3525 }
3526
3527 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
3528 assert(is_instance(loader), "loader must be oop");
3529 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
3530 oop acl = loader;
3531 debug_only(jint loop_count = 0);
3532 // This loop taken verbatim from ClassLoader.java:
3533 do {
3534 acl = parent(acl);
3535 if (cl == acl) {
3536 return true;
3537 }
3538 assert(++loop_count > 0, "loop_count overflow");
3539 } while (acl != NULL);
3540 return false;
3541 }
3542
3543 bool java_lang_ClassLoader::is_instance(oop obj) {
3544 return obj != NULL && is_subclass(obj->klass());
3545 }
3546
3547
3548 // For class loader classes, parallelCapable defined
3549 // based on non-null field
3550 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
3551 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
3552 if (parallelCapable_offset == -1) {
3553 // Default for backward compatibility is false
3554 return false;
3555 }
3556 return (class_loader->obj_field(parallelCapable_offset) != NULL);
3557 }
3558
3559 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
3560 // Fix for 4474172; see evaluation for more details
3561 loader = non_reflection_class_loader(loader);
3562
3563 oop cl = SystemDictionary::java_system_loader();
3564 while(cl != NULL) {
3565 if (cl == loader) return true;
3566 cl = parent(cl);
3567 }
3568 return false;
3569 }
3570
3571 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
3572 if (loader != NULL) {
3573 // See whether this is one of the class loaders associated with
3574 // the generated bytecodes for reflection, and if so, "magically"
3575 // delegate to its parent to prevent class loading from occurring
3576 // in places where applications using reflection didn't expect it.
3577 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
3578 // This might be null in non-1.4 JDKs
3579 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
3580 return parent(loader);
3581 }
3582 }
3583 return loader;
3584 }
3585
3586 oop java_lang_ClassLoader::unnamedModule(oop loader) {
3587 assert(is_instance(loader), "loader must be oop");
3588 return loader->obj_field(unnamedModule_offset);
3589 }
3590
3591 // Support for java_lang_System
3592 int java_lang_System::in_offset_in_bytes() {
3593 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
3594 }
3595
3596
3597 int java_lang_System::out_offset_in_bytes() {
3598 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
3599 }
3600
3601
3602 int java_lang_System::err_offset_in_bytes() {
3603 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
3604 }
3605
3606
3607 bool java_lang_System::has_security_manager() {
3608 InstanceKlass* ik = SystemDictionary::System_klass();
3609 address addr = ik->static_field_addr(static_security_offset);
3610 if (UseCompressedOops) {
3611 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
3612 } else {
3613 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
3614 }
3615 }
3616
3617 int java_lang_Class::_klass_offset;
3618 int java_lang_Class::_array_klass_offset;
3619 int java_lang_Class::_oop_size_offset;
3620 int java_lang_Class::_static_oop_field_count_offset;
3621 int java_lang_Class::_class_loader_offset;
3622 int java_lang_Class::_module_offset;
3623 int java_lang_Class::_protection_domain_offset;
3624 int java_lang_Class::_component_mirror_offset;
3625 int java_lang_Class::_init_lock_offset;
3626 int java_lang_Class::_signers_offset;
3627 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
3628 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
3629 int java_lang_Throwable::backtrace_offset;
3630 int java_lang_Throwable::detailMessage_offset;
3631 int java_lang_Throwable::stackTrace_offset;
3632 int java_lang_Throwable::depth_offset;
3633 int java_lang_Throwable::static_unassigned_stacktrace_offset;
3634 int java_lang_reflect_AccessibleObject::override_offset;
3635 int java_lang_reflect_Method::clazz_offset;
3636 int java_lang_reflect_Method::name_offset;
3637 int java_lang_reflect_Method::returnType_offset;
3638 int java_lang_reflect_Method::parameterTypes_offset;
3639 int java_lang_reflect_Method::exceptionTypes_offset;
3640 int java_lang_reflect_Method::slot_offset;
3641 int java_lang_reflect_Method::modifiers_offset;
3642 int java_lang_reflect_Method::signature_offset;
3643 int java_lang_reflect_Method::annotations_offset;
3644 int java_lang_reflect_Method::parameter_annotations_offset;
3645 int java_lang_reflect_Method::annotation_default_offset;
3646 int java_lang_reflect_Method::type_annotations_offset;
3647 int java_lang_reflect_Constructor::clazz_offset;
3648 int java_lang_reflect_Constructor::parameterTypes_offset;
3649 int java_lang_reflect_Constructor::exceptionTypes_offset;
3650 int java_lang_reflect_Constructor::slot_offset;
3651 int java_lang_reflect_Constructor::modifiers_offset;
3652 int java_lang_reflect_Constructor::signature_offset;
3653 int java_lang_reflect_Constructor::annotations_offset;
3654 int java_lang_reflect_Constructor::parameter_annotations_offset;
3655 int java_lang_reflect_Constructor::type_annotations_offset;
3656 int java_lang_reflect_Field::clazz_offset;
3657 int java_lang_reflect_Field::name_offset;
3658 int java_lang_reflect_Field::type_offset;
3659 int java_lang_reflect_Field::slot_offset;
3660 int java_lang_reflect_Field::modifiers_offset;
3661 int java_lang_reflect_Field::signature_offset;
3662 int java_lang_reflect_Field::annotations_offset;
3663 int java_lang_reflect_Field::type_annotations_offset;
3664 int java_lang_reflect_Parameter::name_offset;
3665 int java_lang_reflect_Parameter::modifiers_offset;
3666 int java_lang_reflect_Parameter::index_offset;
3667 int java_lang_reflect_Parameter::executable_offset;
3668 int java_lang_boxing_object::value_offset;
3669 int java_lang_boxing_object::long_value_offset;
3670 int java_lang_ref_Reference::referent_offset;
3671 int java_lang_ref_Reference::queue_offset;
3672 int java_lang_ref_Reference::next_offset;
3673 int java_lang_ref_Reference::discovered_offset;
3674 int java_lang_ref_Reference::static_lock_offset;
3675 int java_lang_ref_Reference::static_pending_offset;
3676 int java_lang_ref_Reference::number_of_fake_oop_fields;
3677 int java_lang_ref_SoftReference::timestamp_offset;
3678 int java_lang_ref_SoftReference::static_clock_offset;
3679 int java_lang_ClassLoader::parent_offset;
3680 int java_lang_System::static_in_offset;
3681 int java_lang_System::static_out_offset;
3682 int java_lang_System::static_err_offset;
3683 int java_lang_System::static_security_offset;
3684 int java_lang_StackTraceElement::declaringClass_offset;
3685 int java_lang_StackTraceElement::methodName_offset;
3686 int java_lang_StackTraceElement::fileName_offset;
3687 int java_lang_StackTraceElement::lineNumber_offset;
3688 int java_lang_StackTraceElement::moduleName_offset;
3689 int java_lang_StackTraceElement::moduleVersion_offset;
3690 int java_lang_StackFrameInfo::_declaringClass_offset;
3691 int java_lang_StackFrameInfo::_memberName_offset;
3692 int java_lang_StackFrameInfo::_bci_offset;
3693 int java_lang_StackFrameInfo::_methodName_offset;
3694 int java_lang_StackFrameInfo::_fileName_offset;
3695 int java_lang_StackFrameInfo::_lineNumber_offset;
3696 int java_lang_StackFrameInfo::_mid_offset;
3697 int java_lang_StackFrameInfo::_version_offset;
3698 int java_lang_StackFrameInfo::_cpref_offset;
3699 int java_lang_LiveStackFrameInfo::_monitors_offset;
3700 int java_lang_LiveStackFrameInfo::_locals_offset;
3701 int java_lang_LiveStackFrameInfo::_operands_offset;
3702 int java_lang_AssertionStatusDirectives::classes_offset;
3703 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3704 int java_lang_AssertionStatusDirectives::packages_offset;
3705 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3706 int java_lang_AssertionStatusDirectives::deflt_offset;
3707 int java_nio_Buffer::_limit_offset;
3708 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3709 int sun_reflect_ConstantPool::_oop_offset;
3710 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3711
3712
3713 // Support for java_lang_StackTraceElement
3714
3715 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3716 element->obj_field_put(fileName_offset, value);
3717 }
3718
3719 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3720 element->obj_field_put(declaringClass_offset, value);
3721 }
3722
3723 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3724 element->obj_field_put(methodName_offset, value);
3725 }
3726
3727 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3728 element->int_field_put(lineNumber_offset, value);
3729 }
3730
3731 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
3732 element->obj_field_put(moduleName_offset, value);
3733 }
3734
3735 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
3736 element->obj_field_put(moduleVersion_offset, value);
3737 }
3738
3739 // Support for java_lang_StackFrameInfo
3740 void java_lang_StackFrameInfo::set_declaringClass(oop element, oop value) {
3741 element->obj_field_put(_declaringClass_offset, value);
3742 }
3743
3744 void java_lang_StackFrameInfo::set_mid(oop element, short value) {
3745 element->short_field_put(_mid_offset, value);
3746 }
3747
3748 void java_lang_StackFrameInfo::set_version(oop element, short value) {
3749 element->short_field_put(_version_offset, value);
3750 }
3751
3752 void java_lang_StackFrameInfo::set_cpref(oop element, short value) {
3753 element->short_field_put(_cpref_offset, value);
3754 }
3755
3756 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
3757 element->int_field_put(_bci_offset, value);
3758 }
3759
3760 void java_lang_StackFrameInfo::set_fileName(oop element, oop value) {
3761 element->obj_field_put(_fileName_offset, value);
3762 }
3763
3764 void java_lang_StackFrameInfo::set_methodName(oop element, oop value) {
3765 element->obj_field_put(_methodName_offset, value);
3766 }
3767
3768 void java_lang_StackFrameInfo::set_lineNumber(oop element, int value) {
3769 element->int_field_put(_lineNumber_offset, value);
3770 }
3771
3772 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
3773 element->obj_field_put(_monitors_offset, value);
3774 }
3775
3776 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
3777 element->obj_field_put(_locals_offset, value);
3778 }
3779
3780 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
3781 element->obj_field_put(_operands_offset, value);
3782 }
3783
3784 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3785
3786 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3787 o->obj_field_put(classes_offset, val);
3788 }
3789
3790 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3791 o->obj_field_put(classEnabled_offset, val);
3792 }
3793
3794 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3795 o->obj_field_put(packages_offset, val);
3796 }
3797
3798 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3799 o->obj_field_put(packageEnabled_offset, val);
3800 }
3801
3802 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3803 o->bool_field_put(deflt_offset, val);
3804 }
3805
3806
3807 // Support for intrinsification of java.nio.Buffer.checkIndex
3808 int java_nio_Buffer::limit_offset() {
3809 return _limit_offset;
3810 }
3811
3812
3813 void java_nio_Buffer::compute_offsets() {
3814 Klass* k = SystemDictionary::nio_Buffer_klass();
3815 assert(k != NULL, "must be loaded in 1.4+");
3816 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3817 }
3818
3819 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3820 if (_owner_offset != 0) return;
3821
3822 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3823 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3824 compute_offset(_owner_offset, k,
3825 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3826 }
3827
3828 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3829 assert(_owner_offset != 0, "Must be initialized");
3830 return obj->obj_field(_owner_offset);
3831 }
3832
3833 // Compute hard-coded offsets
3834 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3835 // are not available to determine the offset_of_static_fields.
3836 void JavaClasses::compute_hard_coded_offsets() {
3837 const int x = heapOopSize;
3838 const int header = instanceOopDesc::base_offset_in_bytes();
3839
3840 // Throwable Class
3841 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3842 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3843 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3844 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3845
3846 // java_lang_boxing_object
3847 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3848 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3849
3850 // java_lang_ref_Reference:
3851 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3852 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3853 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3854 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3855 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3856 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3857 // Artificial fields for java_lang_ref_Reference
3858 // The first field is for the discovered field added in 1.4
3859 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3860
3861 // java_lang_ref_SoftReference Class
3862 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3863 // Don't multiply static fields because they are always in wordSize units
3864 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3865
3866 // java_lang_ClassLoader
3867 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3868
3869 // java_lang_System
3870 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3871 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3872 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3873 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3874
3875 // java_lang_StackTraceElement
3876 java_lang_StackTraceElement::moduleName_offset = java_lang_StackTraceElement::hc_moduleName_offset * x + header;
3877 java_lang_StackTraceElement::moduleVersion_offset = java_lang_StackTraceElement::hc_moduleVersion_offset * x + header;
3878 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3879 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3880 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3881 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3882 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3883 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3884 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3885 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3886 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3887
3888 }
3889
3890
3891 // Compute non-hard-coded field offsets of all the classes in this file
3892 void JavaClasses::compute_offsets() {
3893 // java_lang_Class::compute_offsets was called earlier in bootstrap
3894 java_lang_ClassLoader::compute_offsets();
3895 java_lang_Throwable::compute_offsets();
3896 java_lang_Thread::compute_offsets();
3897 java_lang_ThreadGroup::compute_offsets();
3898 java_lang_invoke_MethodHandle::compute_offsets();
3899 java_lang_invoke_DirectMethodHandle::compute_offsets();
3900 java_lang_invoke_MemberName::compute_offsets();
3901 java_lang_invoke_LambdaForm::compute_offsets();
3902 java_lang_invoke_MethodType::compute_offsets();
3903 java_lang_invoke_CallSite::compute_offsets();
3904 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
3905 java_security_AccessControlContext::compute_offsets();
3906 // Initialize reflection classes. The layouts of these classes
3907 // changed with the new reflection implementation in JDK 1.4, and
3908 // since the Universe doesn't know what JDK version it is until this
3909 // point we defer computation of these offsets until now.
3910 java_lang_reflect_AccessibleObject::compute_offsets();
3911 java_lang_reflect_Method::compute_offsets();
3912 java_lang_reflect_Constructor::compute_offsets();
3913 java_lang_reflect_Field::compute_offsets();
3914 java_nio_Buffer::compute_offsets();
3915 sun_reflect_ConstantPool::compute_offsets();
3916 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3917 java_lang_reflect_Parameter::compute_offsets();
3918 java_lang_reflect_Module::compute_offsets();
3919 java_lang_StackFrameInfo::compute_offsets();
3920 java_lang_LiveStackFrameInfo::compute_offsets();
3921
3922 // generated interpreter code wants to know about the offsets we just computed:
3923 AbstractAssembler::update_delayed_values();
3924 }
3925
3926 #ifndef PRODUCT
3927
3928 // These functions exist to assert the validity of hard-coded field offsets to guard
3929 // against changes in the class files
3930
3931 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3932 EXCEPTION_MARK;
3933 fieldDescriptor fd;
3934 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3935 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3936 instanceKlassHandle h_klass (THREAD, k);
3937 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3938 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3939 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3940 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3941 return false;
3942 }
3943 if (fd.is_static()) {
3944 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3945 return false;
3946 }
3947 if (fd.offset() == hardcoded_offset ) {
3948 return true;
3949 } else {
3950 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3951 klass_name, field_name, hardcoded_offset, fd.offset());
3952 return false;
3953 }
3954 }
3955
3956
3957 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3958 EXCEPTION_MARK;
3959 fieldDescriptor fd;
3960 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3961 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3962 instanceKlassHandle h_klass (THREAD, k);
3963 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3964 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3965 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3966 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3967 return false;
3968 }
3969 if (!fd.is_static()) {
3970 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3971 return false;
3972 }
3973 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3974 return true;
3975 } else {
3976 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());
3977 return false;
3978 }
3979 }
3980
3981
3982 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3983 EXCEPTION_MARK;
3984 fieldDescriptor fd;
3985 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3986 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3987 instanceKlassHandle h_klass (THREAD, k);
3988 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3989 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3990 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3991 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3992 return false;
3993 }
3994 if (!fd.is_static() || !fd.has_initial_value()) {
3995 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3996 return false;
3997 }
3998 if (!fd.initial_value_tag().is_int()) {
3999 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
4000 return false;
4001 }
4002 jint field_value = fd.int_initial_value();
4003 if (field_value == hardcoded_constant) {
4004 return true;
4005 } else {
4006 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);
4007 return false;
4008 }
4009 }
4010
4011
4012 // Check the hard-coded field offsets of all the classes in this file
4013
4014 void JavaClasses::check_offsets() {
4015 bool valid = true;
4016 HandleMark hm;
4017
4018 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4019 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4020
4021 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4022 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4023
4024 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4025 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
4026
4027 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
4028 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
4029
4030 // java.lang.String
4031
4032 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[B");
4033 if (java_lang_String::has_hash_field()) {
4034 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
4035 }
4036 if (java_lang_String::has_coder_field()) {
4037 CHECK_OFFSET("java/lang/String", java_lang_String, coder, "B");
4038 }
4039
4040 // java.lang.Class
4041
4042 // Fake fields
4043 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
4044 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
4045
4046 // java.lang.Throwable
4047
4048 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
4049 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
4050 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
4051 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, depth, "I");
4052
4053 // Boxed primitive objects (java_lang_boxing_object)
4054
4055 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4056 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4057 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4058 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4059 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4060 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4061 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4062 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4063
4064 // java.lang.ClassLoader
4065
4066 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
4067
4068 // java.lang.System
4069
4070 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
4071 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
4072 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
4073 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
4074
4075 // java.lang.StackTraceElement
4076
4077 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
4078 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
4079 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
4080 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
4081
4082 // java.lang.ref.Reference
4083
4084 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4085 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4086 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4087 // Fake field
4088 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4089 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
4090 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
4091
4092 // java.lang.ref.SoftReference
4093
4094 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
4095 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
4096
4097 // java.lang.AssertionStatusDirectives
4098 //
4099 // The CheckAssertionStatusDirectives boolean can be removed from here and
4100 // globals.hpp after the AssertionStatusDirectives class has been integrated
4101 // into merlin "for some time." Without it, the vm will fail with early
4102 // merlin builds.
4103
4104 if (CheckAssertionStatusDirectives) {
4105 const char* nm = "java/lang/AssertionStatusDirectives";
4106 const char* sig = "[Ljava/lang/String;";
4107 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
4108 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
4109 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
4110 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
4111 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
4112 }
4113
4114 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4115 }
4116
4117 #endif // PRODUCT
4118
4119 int InjectedField::compute_offset() {
4120 InstanceKlass* ik = InstanceKlass::cast(klass());
4121 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4122 if (!may_be_java && !fs.access_flags().is_internal()) {
4123 // Only look at injected fields
4124 continue;
4125 }
4126 if (fs.name() == name() && fs.signature() == signature()) {
4127 return fs.offset();
4128 }
4129 }
4130 ResourceMark rm;
4131 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)" : "");
4132 #ifndef PRODUCT
4133 ik->print();
4134 tty->print_cr("all fields:");
4135 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4136 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4137 }
4138 #endif //PRODUCT
4139 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:classload=info to see the origin of the problem class");
4140 return -1;
4141 }
4142
4143 void javaClasses_init() {
4144 JavaClasses::compute_offsets();
4145 JavaClasses::check_offsets();
4146 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4147 }