1 /*
2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "classfile/altHashing.hpp"
27 #include "classfile/classLoaderData.inline.hpp"
28 #include "classfile/javaClasses.inline.hpp"
29 #include "classfile/moduleEntry.hpp"
30 #include "classfile/stringTable.hpp"
31 #include "classfile/vmSymbols.hpp"
32 #include "code/debugInfo.hpp"
33 #include "code/dependencyContext.hpp"
34 #include "code/pcDesc.hpp"
35 #include "interpreter/interpreter.hpp"
36 #include "memory/oopFactory.hpp"
37 #include "memory/resourceArea.hpp"
38 #include "memory/universe.inline.hpp"
39 #include "oops/fieldStreams.hpp"
40 #include "oops/instanceKlass.hpp"
41 #include "oops/instanceMirrorKlass.hpp"
42 #include "oops/klass.hpp"
43 #include "oops/method.hpp"
44 #include "oops/objArrayOop.inline.hpp"
45 #include "oops/oop.inline.hpp"
46 #include "oops/symbol.hpp"
47 #include "oops/typeArrayOop.hpp"
48 #include "runtime/fieldDescriptor.hpp"
49 #include "runtime/handles.inline.hpp"
50 #include "runtime/interfaceSupport.hpp"
51 #include "runtime/java.hpp"
52 #include "runtime/javaCalls.hpp"
53 #include "runtime/safepoint.hpp"
54 #include "runtime/thread.inline.hpp"
55 #include "runtime/vframe.hpp"
56 #include "utilities/preserveException.hpp"
57
58 #if INCLUDE_JVMCI
59 #include "jvmci/jvmciJavaClasses.hpp"
60 #endif
61
62 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
63 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
64
65 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
66 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
67
68 InjectedField JavaClasses::_injected_fields[] = {
69 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
70 };
71
72 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
73 return _injected_fields[id].compute_offset();
74 }
75
76
77 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
78 *field_count = 0;
79
80 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
81 if (sid == vmSymbols::NO_SID) {
82 // Only well known classes can inject fields
83 return NULL;
84 }
85
86 int count = 0;
87 int start = -1;
88
89 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
90 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
91 count++; \
92 if (start == -1) start = klass##_##name##_enum; \
93 }
94 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
95 #undef LOOKUP_INJECTED_FIELD
96
97 if (start != -1) {
98 *field_count = count;
99 return _injected_fields + start;
100 }
101 return NULL;
102 }
103
104
105 static bool find_field(InstanceKlass* ik,
106 Symbol* name_symbol, Symbol* signature_symbol,
107 fieldDescriptor* fd,
108 bool is_static = false, bool allow_super = false) {
109 if (allow_super || is_static) {
110 return ik->find_field(name_symbol, signature_symbol, is_static, fd) != NULL;
111 } else {
112 return ik->find_local_field(name_symbol, signature_symbol, fd);
113 }
114 }
115
116 // Helpful routine for computing field offsets at run time rather than hardcoding them
117 static void
118 compute_offset(int &dest_offset,
119 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
120 bool is_static = false, bool allow_super = false) {
121 fieldDescriptor fd;
122 InstanceKlass* ik = InstanceKlass::cast(klass);
123 if (!find_field(ik, name_symbol, signature_symbol, &fd, is_static, allow_super)) {
124 ResourceMark rm;
125 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string());
126 #ifndef PRODUCT
127 ik->print();
128 tty->print_cr("all fields:");
129 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
130 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
131 }
132 #endif //PRODUCT
133 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
134 }
135 dest_offset = fd.offset();
136 }
137
138 // Same as above but for "optional" offsets that might not be present in certain JDK versions
139 static void
140 compute_optional_offset(int& dest_offset,
141 Klass* klass, Symbol* name_symbol, Symbol* signature_symbol,
142 bool allow_super = false) {
143 fieldDescriptor fd;
144 InstanceKlass* ik = InstanceKlass::cast(klass);
145 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) {
146 dest_offset = fd.offset();
147 }
148 }
149
150
151 int java_lang_String::value_offset = 0;
152 int java_lang_String::hash_offset = 0;
153 int java_lang_String::coder_offset = 0;
154
155 bool java_lang_String::initialized = false;
156
157 bool java_lang_String::is_instance(oop obj) {
158 return is_instance_inlined(obj);
159 }
160
161 void java_lang_String::compute_offsets() {
162 assert(!initialized, "offsets should be initialized only once");
163
164 Klass* k = SystemDictionary::String_klass();
165 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::byte_array_signature());
166 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
167 compute_optional_offset(coder_offset, k, vmSymbols::coder_name(), vmSymbols::byte_signature());
168
169 initialized = true;
170 }
171
172 class CompactStringsFixup : public FieldClosure {
173 private:
174 bool _value;
175
176 public:
177 CompactStringsFixup(bool value) : _value(value) {}
178
179 void do_field(fieldDescriptor* fd) {
180 if (fd->name() == vmSymbols::compact_strings_name()) {
181 oop mirror = fd->field_holder()->java_mirror();
182 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
183 assert(mirror != NULL, "String must have mirror already");
184 mirror->bool_field_put(fd->offset(), _value);
185 }
186 }
187 };
188
189 void java_lang_String::set_compact_strings(bool value) {
190 CompactStringsFixup fix(value);
191 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
192 }
193
194 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
195 assert(initialized, "Must be initialized");
196 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
197
198 // Create the String object first, so there's a chance that the String
199 // and the char array it points to end up in the same cache line.
200 oop obj;
201 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
202
203 // Create the char array. The String object must be handlized here
204 // because GC can happen as a result of the allocation attempt.
205 Handle h_obj(THREAD, obj);
206 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
207 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
208
209 // Point the String at the char array
210 obj = h_obj();
211 set_value(obj, buffer);
212 // No need to zero the offset, allocation zero'ed the entire String object
213 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
214 return h_obj;
215 }
216
217 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
218 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
219 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
220 typeArrayOop buffer = value(h_obj());
221 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
222 if (is_latin1) {
223 for (int index = 0; index < length; index++) {
224 buffer->byte_at_put(index, (jbyte)unicode[index]);
225 }
226 } else {
227 for (int index = 0; index < length; index++) {
228 buffer->char_at_put(index, unicode[index]);
229 }
230 }
231
232 #ifdef ASSERT
233 {
234 ResourceMark rm;
235 char* expected = UNICODE::as_utf8(unicode, length);
236 char* actual = as_utf8_string(h_obj());
237 if (strcmp(expected, actual) != 0) {
238 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
239 ShouldNotReachHere();
240 }
241 }
242 #endif
243
244 return h_obj;
245 }
246
247 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
248 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
249 return h_obj();
250 }
251
252 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
253 if (utf8_str == NULL) {
254 return Handle();
255 }
256 bool has_multibyte, is_latin1;
257 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
258 if (!CompactStrings) {
259 has_multibyte = true;
260 is_latin1 = false;
261 }
262
263 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
264 if (length > 0) {
265 if (!has_multibyte) {
266 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
267 } else if (is_latin1) {
268 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
269 } else {
270 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
271 }
272 }
273
274 #ifdef ASSERT
275 // This check is too strict because the input string is not necessarily valid UTF8.
276 // For example, it may be created with arbitrary content via jni_NewStringUTF.
277 /*
278 {
279 ResourceMark rm;
280 const char* expected = utf8_str;
281 char* actual = as_utf8_string(h_obj());
282 if (strcmp(expected, actual) != 0) {
283 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
284 ShouldNotReachHere();
285 }
286 }
287 */
288 #endif
289
290 return h_obj;
291 }
292
293 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
294 Handle h_obj = create_from_str(utf8_str, CHECK_0);
295 return h_obj();
296 }
297
298 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
299 const char* utf8_str = (char*)symbol->bytes();
300 int utf8_len = symbol->utf8_length();
301
302 bool has_multibyte, is_latin1;
303 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
304 if (!CompactStrings) {
305 has_multibyte = true;
306 is_latin1 = false;
307 }
308
309 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
310 if (length > 0) {
311 if (!has_multibyte) {
312 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
313 } else if (is_latin1) {
314 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
315 } else {
316 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
317 }
318 }
319
320 #ifdef ASSERT
321 {
322 ResourceMark rm;
323 const char* expected = symbol->as_utf8();
324 char* actual = as_utf8_string(h_obj());
325 if (strncmp(expected, actual, utf8_len) != 0) {
326 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
327 ShouldNotReachHere();
328 }
329 }
330 #endif
331
332 return h_obj;
333 }
334
335 // Converts a C string to a Java String based on current encoding
336 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
337 assert(str != NULL, "bad arguments");
338
339 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
340 static to_java_string_fn_t _to_java_string_fn = NULL;
341
342 if (_to_java_string_fn == NULL) {
343 void *lib_handle = os::native_java_library();
344 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
345 if (_to_java_string_fn == NULL) {
346 fatal("NewStringPlatform missing");
347 }
348 }
349
350 jstring js = NULL;
351 { JavaThread* thread = (JavaThread*)THREAD;
352 assert(thread->is_Java_thread(), "must be java thread");
353 HandleMark hm(thread);
354 ThreadToNativeFromVM ttn(thread);
355 js = (_to_java_string_fn)(thread->jni_environment(), str);
356 }
357 return Handle(THREAD, JNIHandles::resolve(js));
358 }
359
360 // Converts a Java String to a native C string that can be used for
361 // native OS calls.
362 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
363 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
364 static to_platform_string_fn_t _to_platform_string_fn = NULL;
365
366 if (_to_platform_string_fn == NULL) {
367 void *lib_handle = os::native_java_library();
368 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
369 if (_to_platform_string_fn == NULL) {
370 fatal("GetStringPlatformChars missing");
371 }
372 }
373
374 char *native_platform_string;
375 { JavaThread* thread = (JavaThread*)THREAD;
376 assert(thread->is_Java_thread(), "must be java thread");
377 JNIEnv *env = thread->jni_environment();
378 jstring js = (jstring) JNIHandles::make_local(env, java_string());
379 bool is_copy;
380 HandleMark hm(thread);
381 ThreadToNativeFromVM ttn(thread);
382 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
383 assert(is_copy == JNI_TRUE, "is_copy value changed");
384 JNIHandles::destroy_local(js);
385 }
386 return native_platform_string;
387 }
388
389 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
390 oop obj = java_string();
391 // Typical usage is to convert all '/' to '.' in string.
392 typeArrayOop value = java_lang_String::value(obj);
393 int length = java_lang_String::length(obj);
394 bool is_latin1 = java_lang_String::is_latin1(obj);
395
396 // First check if any from_char exist
397 int index; // Declared outside, used later
398 for (index = 0; index < length; index++) {
399 jchar c = !is_latin1 ? value->char_at(index) :
400 ((jchar) value->byte_at(index)) & 0xff;
401 if (c == from_char) {
402 break;
403 }
404 }
405 if (index == length) {
406 // No from_char, so do not copy.
407 return java_string;
408 }
409
410 // Check if result string will be latin1
411 bool to_is_latin1 = false;
412
413 // Replacement char must be latin1
414 if (CompactStrings && UNICODE::is_latin1(to_char)) {
415 if (is_latin1) {
416 // Source string is latin1 as well
417 to_is_latin1 = true;
418 } else if (!UNICODE::is_latin1(from_char)) {
419 // We are replacing an UTF16 char. Scan string to
420 // check if result can be latin1 encoded.
421 to_is_latin1 = true;
422 for (index = 0; index < length; index++) {
423 jchar c = value->char_at(index);
424 if (c != from_char && !UNICODE::is_latin1(c)) {
425 to_is_latin1 = false;
426 break;
427 }
428 }
429 }
430 }
431
432 // Create new UNICODE (or byte) buffer. Must handlize value because GC
433 // may happen during String and char array creation.
434 typeArrayHandle h_value(THREAD, value);
435 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
436 typeArrayOop from_buffer = h_value();
437 typeArrayOop to_buffer = java_lang_String::value(string());
438
439 // Copy contents
440 for (index = 0; index < length; index++) {
441 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
442 ((jchar) from_buffer->byte_at(index)) & 0xff;
443 if (c == from_char) {
444 c = to_char;
445 }
446 if (!to_is_latin1) {
447 to_buffer->char_at_put(index, c);
448 } else {
449 to_buffer->byte_at_put(index, (jbyte) c);
450 }
451 }
452 return string;
453 }
454
455 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
456 typeArrayOop value = java_lang_String::value(java_string);
457 length = java_lang_String::length(java_string);
458 bool is_latin1 = java_lang_String::is_latin1(java_string);
459
460 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
461 if (result != NULL) {
462 if (!is_latin1) {
463 for (int index = 0; index < length; index++) {
464 result[index] = value->char_at(index);
465 }
466 } else {
467 for (int index = 0; index < length; index++) {
468 result[index] = ((jchar) value->byte_at(index)) & 0xff;
469 }
470 }
471 } else {
472 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
473 }
474 return result;
475 }
476
477 unsigned int java_lang_String::hash_code(oop java_string) {
478 int length = java_lang_String::length(java_string);
479 // Zero length string will hash to zero with String.hashCode() function.
480 if (length == 0) return 0;
481
482 typeArrayOop value = java_lang_String::value(java_string);
483 bool is_latin1 = java_lang_String::is_latin1(java_string);
484
485 if (is_latin1) {
486 return java_lang_String::hash_code(value->byte_at_addr(0), length);
487 } else {
488 return java_lang_String::hash_code(value->char_at_addr(0), length);
489 }
490 }
491
492 char* java_lang_String::as_quoted_ascii(oop java_string) {
493 typeArrayOop value = java_lang_String::value(java_string);
494 int length = java_lang_String::length(java_string);
495 bool is_latin1 = java_lang_String::is_latin1(java_string);
496
497 if (length == 0) return NULL;
498
499 char* result;
500 int result_length;
501 if (!is_latin1) {
502 jchar* base = value->char_at_addr(0);
503 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
504 result = NEW_RESOURCE_ARRAY(char, result_length);
505 UNICODE::as_quoted_ascii(base, length, result, result_length);
506 } else {
507 jbyte* base = value->byte_at_addr(0);
508 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
509 result = NEW_RESOURCE_ARRAY(char, result_length);
510 UNICODE::as_quoted_ascii(base, length, result, result_length);
511 }
512 assert(result_length >= length + 1, "must not be shorter");
513 assert(result_length == (int)strlen(result) + 1, "must match");
514 return result;
515 }
516
517 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
518 oop obj = java_string();
519 typeArrayOop value = java_lang_String::value(obj);
520 int length = java_lang_String::length(obj);
521 bool is_latin1 = java_lang_String::is_latin1(obj);
522 if (!is_latin1) {
523 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
524 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
525 return sym;
526 } else {
527 ResourceMark rm;
528 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
529 const char* base = UNICODE::as_utf8(position, length);
530 Symbol* sym = SymbolTable::lookup(base, length, THREAD);
531 return sym;
532 }
533 }
534
535 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
536 typeArrayOop value = java_lang_String::value(java_string);
537 int length = java_lang_String::length(java_string);
538 bool is_latin1 = java_lang_String::is_latin1(java_string);
539 if (!is_latin1) {
540 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
541 return SymbolTable::probe_unicode(base, length);
542 } else {
543 ResourceMark rm;
544 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
545 const char* base = UNICODE::as_utf8(position, length);
546 return SymbolTable::probe(base, length);
547 }
548 }
549
550 int java_lang_String::utf8_length(oop java_string) {
551 typeArrayOop value = java_lang_String::value(java_string);
552 int length = java_lang_String::length(java_string);
553 bool is_latin1 = java_lang_String::is_latin1(java_string);
554 if (length == 0) {
555 return 0;
556 }
557 if (!is_latin1) {
558 return UNICODE::utf8_length(value->char_at_addr(0), length);
559 } else {
560 return UNICODE::utf8_length(value->byte_at_addr(0), length);
561 }
562 }
563
564 char* java_lang_String::as_utf8_string(oop java_string) {
565 typeArrayOop value = java_lang_String::value(java_string);
566 int length = java_lang_String::length(java_string);
567 bool is_latin1 = java_lang_String::is_latin1(java_string);
568 if (!is_latin1) {
569 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
570 return UNICODE::as_utf8(position, length);
571 } else {
572 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
573 return UNICODE::as_utf8(position, length);
574 }
575 }
576
577 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
578 typeArrayOop value = java_lang_String::value(java_string);
579 int length = java_lang_String::length(java_string);
580 bool is_latin1 = java_lang_String::is_latin1(java_string);
581 if (!is_latin1) {
582 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
583 return UNICODE::as_utf8(position, length, buf, buflen);
584 } else {
585 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
586 return UNICODE::as_utf8(position, length, buf, buflen);
587 }
588 }
589
590 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
591 typeArrayOop value = java_lang_String::value(java_string);
592 int length = java_lang_String::length(java_string);
593 assert(start + len <= length, "just checking");
594 bool is_latin1 = java_lang_String::is_latin1(java_string);
595 if (!is_latin1) {
596 jchar* position = value->char_at_addr(start);
597 return UNICODE::as_utf8(position, len);
598 } else {
599 jbyte* position = value->byte_at_addr(start);
600 return UNICODE::as_utf8(position, len);
601 }
602 }
603
604 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
605 typeArrayOop value = java_lang_String::value(java_string);
606 int length = java_lang_String::length(java_string);
607 assert(start + len <= length, "just checking");
608 bool is_latin1 = java_lang_String::is_latin1(java_string);
609 if (!is_latin1) {
610 jchar* position = value->char_at_addr(start);
611 return UNICODE::as_utf8(position, len, buf, buflen);
612 } else {
613 jbyte* position = value->byte_at_addr(start);
614 return UNICODE::as_utf8(position, len, buf, buflen);
615 }
616 }
617
618 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
619 assert(java_string->klass() == SystemDictionary::String_klass(),
620 "must be java_string");
621 typeArrayOop value = java_lang_String::value(java_string);
622 int length = java_lang_String::length(java_string);
623 if (length != len) {
624 return false;
625 }
626 bool is_latin1 = java_lang_String::is_latin1(java_string);
627 if (!is_latin1) {
628 for (int i = 0; i < len; i++) {
629 if (value->char_at(i) != chars[i]) {
630 return false;
631 }
632 }
633 } else {
634 for (int i = 0; i < len; i++) {
635 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
636 return false;
637 }
638 }
639 }
640 return true;
641 }
642
643 bool java_lang_String::equals(oop str1, oop str2) {
644 assert(str1->klass() == SystemDictionary::String_klass(),
645 "must be java String");
646 assert(str2->klass() == SystemDictionary::String_klass(),
647 "must be java String");
648 typeArrayOop value1 = java_lang_String::value(str1);
649 int length1 = java_lang_String::length(str1);
650 bool is_latin1 = java_lang_String::is_latin1(str1);
651 typeArrayOop value2 = java_lang_String::value(str2);
652 int length2 = java_lang_String::length(str2);
653 bool is_latin2 = java_lang_String::is_latin1(str2);
654
655 if ((length1 != length2) || (is_latin1 != is_latin2)) {
656 // Strings of different size or with different
657 // coders are never equal.
658 return false;
659 }
660 int blength1 = value1->length();
661 for (int i = 0; i < value1->length(); i++) {
662 if (value1->byte_at(i) != value2->byte_at(i)) {
663 return false;
664 }
665 }
666 return true;
667 }
668
669 void java_lang_String::print(oop java_string, outputStream* st) {
670 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
671 typeArrayOop value = java_lang_String::value(java_string);
672
673 if (value == NULL) {
674 // This can happen if, e.g., printing a String
675 // object before its initializer has been called
676 st->print("NULL");
677 return;
678 }
679
680 int length = java_lang_String::length(java_string);
681 bool is_latin1 = java_lang_String::is_latin1(java_string);
682
683 st->print("\"");
684 for (int index = 0; index < length; index++) {
685 st->print("%c", (!is_latin1) ? value->char_at(index) :
686 ((jchar) value->byte_at(index)) & 0xff );
687 }
688 st->print("\"");
689 }
690
691
692 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
693 assert(mirror.not_null() && fd->is_static(), "just checking");
694 if (fd->has_initial_value()) {
695 BasicType t = fd->field_type();
696 switch (t) {
697 case T_BYTE:
698 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
699 break;
700 case T_BOOLEAN:
701 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
702 break;
703 case T_CHAR:
704 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
705 break;
706 case T_SHORT:
707 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
708 break;
709 case T_INT:
710 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
711 break;
712 case T_FLOAT:
713 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
714 break;
715 case T_DOUBLE:
716 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
717 break;
718 case T_LONG:
719 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
720 break;
721 case T_OBJECT:
722 {
723 #ifdef ASSERT
724 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
725 assert(fd->signature() == sym, "just checking");
726 #endif
727 oop string = fd->string_initial_value(CHECK);
728 mirror()->obj_field_put(fd->offset(), string);
729 }
730 break;
731 default:
732 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
733 "Illegal ConstantValue attribute in class file");
734 }
735 }
736 }
737
738
739 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
740 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
741
742 // If the offset was read from the shared archive, it was fixed up already
743 if (!k->is_shared()) {
744 if (k->is_instance_klass()) {
745 // During bootstrap, java.lang.Class wasn't loaded so static field
746 // offsets were computed without the size added it. Go back and
747 // update all the static field offsets to included the size.
748 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
749 if (fs.access_flags().is_static()) {
750 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
751 fs.set_offset(real_offset);
752 }
753 }
754 }
755 }
756 create_mirror(k, Handle(NULL), Handle(NULL), Handle(NULL), CHECK);
757 }
758
759 void java_lang_Class::initialize_mirror_fields(KlassHandle k,
760 Handle mirror,
761 Handle protection_domain,
762 TRAPS) {
763 // Allocate a simple java object for a lock.
764 // This needs to be a java object because during class initialization
765 // it can be held across a java call.
766 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
767 set_init_lock(mirror(), r);
768
769 // Set protection domain also
770 set_protection_domain(mirror(), protection_domain());
771
772 // Initialize static fields
773 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, mirror, CHECK);
774 }
775
776 void java_lang_Class::create_mirror(KlassHandle k, Handle class_loader,
777 Handle module, Handle protection_domain, TRAPS) {
778 assert(k->java_mirror() == NULL, "should only assign mirror once");
779 // Use this moment of initialization to cache modifier_flags also,
780 // to support Class.getModifiers(). Instance classes recalculate
781 // the cached flags after the class file is parsed, but before the
782 // class is put into the system dictionary.
783 int computed_modifiers = k->compute_modifier_flags(CHECK);
784 k->set_modifier_flags(computed_modifiers);
785 // Class_klass has to be loaded because it is used to allocate
786 // the mirror.
787 if (SystemDictionary::Class_klass_loaded()) {
788 // Allocate mirror (java.lang.Class instance)
789 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
790
791 // Setup indirection from mirror->klass
792 if (!k.is_null()) {
793 java_lang_Class::set_klass(mirror(), k());
794 }
795
796 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
797 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
798
799 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
800
801 // It might also have a component mirror. This mirror must already exist.
802 if (k->is_array_klass()) {
803 Handle comp_mirror;
804 if (k->is_typeArray_klass()) {
805 BasicType type = TypeArrayKlass::cast(k())->element_type();
806 comp_mirror = Universe::java_mirror(type);
807 } else {
808 assert(k->is_objArray_klass(), "Must be");
809 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
810 assert(element_klass != NULL, "Must have an element klass");
811 comp_mirror = element_klass->java_mirror();
812 }
813 assert(comp_mirror.not_null(), "must have a mirror");
814
815 // Two-way link between the array klass and its component mirror:
816 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
817 set_component_mirror(mirror(), comp_mirror());
818 set_array_klass(comp_mirror(), k());
819 } else {
820 assert(k->is_instance_klass(), "Must be");
821
822 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
823 if (HAS_PENDING_EXCEPTION) {
824 // If any of the fields throws an exception like OOM remove the klass field
825 // from the mirror so GC doesn't follow it after the klass has been deallocated.
826 // This mirror looks like a primitive type, which logically it is because it
827 // it represents no class.
828 java_lang_Class::set_klass(mirror(), NULL);
829 return;
830 }
831 }
832
833 // set the classLoader field in the java_lang_Class instance
834 assert(class_loader() == k->class_loader(), "should be same");
835 set_class_loader(mirror(), class_loader());
836
837 // set the module field in the java_lang_Class instance
838 // This may be null during bootstrap but will get fixed up later on.
839 set_module(mirror(), module());
840
841 // Setup indirection from klass->mirror last
842 // after any exceptions can happen during allocations.
843 if (!k.is_null()) {
844 k->set_java_mirror(mirror());
845 }
846
847 // Keep list of classes needing java.base module fixup.
848 if (!ModuleEntryTable::javabase_defined()) {
849 if (fixup_module_field_list() == NULL) {
850 GrowableArray<Klass*>* list =
851 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
852 set_fixup_module_field_list(list);
853 }
854 k->class_loader_data()->inc_keep_alive();
855 fixup_module_field_list()->push(k());
856 }
857 } else {
858 if (fixup_mirror_list() == NULL) {
859 GrowableArray<Klass*>* list =
860 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
861 set_fixup_mirror_list(list);
862 }
863 fixup_mirror_list()->push(k());
864 }
865 }
866
867 void java_lang_Class::fixup_module_field(KlassHandle k, Handle module) {
868 assert(_module_offset != 0, "must have been computed already");
869 java_lang_Class::set_module(k->java_mirror(), module());
870 }
871
872 int java_lang_Class::oop_size(oop java_class) {
873 assert(_oop_size_offset != 0, "must be set");
874 int size = java_class->int_field(_oop_size_offset);
875 assert(size > 0, "size not set or stomped on: %d", size);
876 return size;
877 }
878 void java_lang_Class::set_oop_size(oop java_class, int size) {
879 assert(_oop_size_offset != 0, "must be set");
880 assert(size > 0, "total object size must be positive: %d", size);
881 java_class->int_field_put(_oop_size_offset, size);
882 }
883
884 int java_lang_Class::static_oop_field_count(oop java_class) {
885 assert(_static_oop_field_count_offset != 0, "must be set");
886 return java_class->int_field(_static_oop_field_count_offset);
887 }
888 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
889 assert(_static_oop_field_count_offset != 0, "must be set");
890 java_class->int_field_put(_static_oop_field_count_offset, size);
891 }
892
893 oop java_lang_Class::protection_domain(oop java_class) {
894 assert(_protection_domain_offset != 0, "must be set");
895 return java_class->obj_field(_protection_domain_offset);
896 }
897 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
898 assert(_protection_domain_offset != 0, "must be set");
899 java_class->obj_field_put(_protection_domain_offset, pd);
900 }
901
902 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
903 assert(_component_mirror_offset != 0, "must be set");
904 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
905 }
906 oop java_lang_Class::component_mirror(oop java_class) {
907 assert(_component_mirror_offset != 0, "must be set");
908 return java_class->obj_field(_component_mirror_offset);
909 }
910
911 oop java_lang_Class::init_lock(oop java_class) {
912 assert(_init_lock_offset != 0, "must be set");
913 return java_class->obj_field(_init_lock_offset);
914 }
915 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
916 assert(_init_lock_offset != 0, "must be set");
917 java_class->obj_field_put(_init_lock_offset, init_lock);
918 }
919
920 objArrayOop java_lang_Class::signers(oop java_class) {
921 assert(_signers_offset != 0, "must be set");
922 return (objArrayOop)java_class->obj_field(_signers_offset);
923 }
924 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
925 assert(_signers_offset != 0, "must be set");
926 java_class->obj_field_put(_signers_offset, (oop)signers);
927 }
928
929
930 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
931 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
932 if (_class_loader_offset != 0) {
933 java_class->obj_field_put(_class_loader_offset, loader);
934 }
935 }
936
937 oop java_lang_Class::class_loader(oop java_class) {
938 assert(_class_loader_offset != 0, "must be set");
939 return java_class->obj_field(_class_loader_offset);
940 }
941
942 oop java_lang_Class::module(oop java_class) {
943 assert(_module_offset != 0, "must be set");
944 return java_class->obj_field(_module_offset);
945 }
946
947 void java_lang_Class::set_module(oop java_class, oop module) {
948 assert(_module_offset != 0, "must be set");
949 java_class->obj_field_put(_module_offset, module);
950 }
951
952 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
953 // This should be improved by adding a field at the Java level or by
954 // introducing a new VM klass (see comment in ClassFileParser)
955 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
956 if (type != T_VOID) {
957 Klass* aklass = Universe::typeArrayKlassObj(type);
958 assert(aklass != NULL, "correct bootstrap");
959 set_array_klass(java_class, aklass);
960 }
961 #ifdef ASSERT
962 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
963 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
964 #endif
965 return java_class;
966 }
967
968
969 Klass* java_lang_Class::as_Klass(oop java_class) {
970 //%note memory_2
971 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
972 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
973 assert(k == NULL || k->is_klass(), "type check");
974 return k;
975 }
976
977
978 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
979 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
980 java_class->metadata_field_put(_klass_offset, klass);
981 }
982
983
984 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
985 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
986 Symbol* name = NULL;
987 bool is_instance = false;
988 if (is_primitive(java_class)) {
989 name = vmSymbols::type_signature(primitive_type(java_class));
990 } else {
991 Klass* k = as_Klass(java_class);
992 is_instance = k->is_instance_klass();
993 name = k->name();
994 }
995 if (name == NULL) {
996 st->print("<null>");
997 return;
998 }
999 if (is_instance) st->print("L");
1000 st->write((char*) name->base(), (int) name->utf8_length());
1001 if (is_instance) st->print(";");
1002 }
1003
1004 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
1005 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1006 Symbol* name;
1007 if (is_primitive(java_class)) {
1008 name = vmSymbols::type_signature(primitive_type(java_class));
1009 // Because this can create a new symbol, the caller has to decrement
1010 // the refcount, so make adjustment here and below for symbols returned
1011 // that are not created or incremented due to a successful lookup.
1012 name->increment_refcount();
1013 } else {
1014 Klass* k = as_Klass(java_class);
1015 if (!k->is_instance_klass()) {
1016 name = k->name();
1017 name->increment_refcount();
1018 } else {
1019 ResourceMark rm;
1020 const char* sigstr = k->signature_name();
1021 int siglen = (int) strlen(sigstr);
1022 if (!intern_if_not_found) {
1023 name = SymbolTable::probe(sigstr, siglen);
1024 } else {
1025 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
1026 }
1027 }
1028 }
1029 return name;
1030 }
1031
1032 // Returns the Java name for this Java mirror (Resource allocated)
1033 // See Klass::external_name().
1034 // For primitive type Java mirrors, its type name is returned.
1035 const char* java_lang_Class::as_external_name(oop java_class) {
1036 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1037 const char* name = NULL;
1038 if (is_primitive(java_class)) {
1039 name = type2name(primitive_type(java_class));
1040 } else {
1041 name = as_Klass(java_class)->external_name();
1042 }
1043 if (name == NULL) {
1044 name = "<null>";
1045 }
1046 return name;
1047 }
1048
1049 Klass* java_lang_Class::array_klass(oop java_class) {
1050 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1051 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1052 return k;
1053 }
1054
1055
1056 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
1057 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1058 java_class->metadata_field_put(_array_klass_offset, klass);
1059 }
1060
1061
1062 bool java_lang_Class::is_primitive(oop java_class) {
1063 // should assert:
1064 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1065 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
1066
1067 #ifdef ASSERT
1068 if (is_primitive) {
1069 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1070 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
1071 "Should be either the T_VOID primitive or a java primitive");
1072 }
1073 #endif
1074
1075 return is_primitive;
1076 }
1077
1078
1079 BasicType java_lang_Class::primitive_type(oop java_class) {
1080 assert(java_lang_Class::is_primitive(java_class), "just checking");
1081 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1082 BasicType type = T_VOID;
1083 if (ak != NULL) {
1084 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1085 type = ArrayKlass::cast(ak)->element_type();
1086 } else {
1087 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1088 }
1089 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1090 return type;
1091 }
1092
1093 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1094 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1095 if (is_primitive(java_class)) {
1096 if (reference_klass != NULL)
1097 (*reference_klass) = NULL;
1098 return primitive_type(java_class);
1099 } else {
1100 if (reference_klass != NULL)
1101 (*reference_klass) = as_Klass(java_class);
1102 return T_OBJECT;
1103 }
1104 }
1105
1106
1107 oop java_lang_Class::primitive_mirror(BasicType t) {
1108 oop mirror = Universe::java_mirror(t);
1109 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1110 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1111 return mirror;
1112 }
1113
1114 bool java_lang_Class::offsets_computed = false;
1115 int java_lang_Class::classRedefinedCount_offset = -1;
1116
1117 void java_lang_Class::compute_offsets() {
1118 assert(!offsets_computed, "offsets should be initialized only once");
1119 offsets_computed = true;
1120
1121 Klass* k = SystemDictionary::Class_klass();
1122 // The classRedefinedCount field is only present starting in 1.5,
1123 // so don't go fatal.
1124 compute_optional_offset(classRedefinedCount_offset,
1125 k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
1126
1127 // Needs to be optional because the old build runs Queens during bootstrapping
1128 // and jdk8-9 doesn't have coordinated pushes yet.
1129 compute_optional_offset(_class_loader_offset,
1130 k, vmSymbols::classLoader_name(),
1131 vmSymbols::classloader_signature());
1132
1133 compute_offset(_component_mirror_offset,
1134 k, vmSymbols::componentType_name(),
1135 vmSymbols::class_signature());
1136
1137 compute_offset(_module_offset,
1138 k, vmSymbols::module_name(),
1139 vmSymbols::module_signature());
1140
1141 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1142 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1143 // GC treats them the same.
1144 _init_lock_offset = _component_mirror_offset;
1145
1146 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1147 }
1148
1149 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1150 if (classRedefinedCount_offset == -1) {
1151 // If we don't have an offset for it then just return -1 as a marker.
1152 return -1;
1153 }
1154
1155 return the_class_mirror->int_field(classRedefinedCount_offset);
1156 }
1157
1158 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1159 if (classRedefinedCount_offset == -1) {
1160 // If we don't have an offset for it then nothing to set.
1161 return;
1162 }
1163
1164 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1165 }
1166
1167
1168 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1169 // platform thread structure, and a eetop offset which was used for thread
1170 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1171 // merged, so in the HotSpot VM we just use the eetop field for the thread
1172 // instead of the privateInfo_offset.
1173 //
1174 // Note: The stackSize field is only present starting in 1.4.
1175
1176 int java_lang_Thread::_name_offset = 0;
1177 int java_lang_Thread::_group_offset = 0;
1178 int java_lang_Thread::_contextClassLoader_offset = 0;
1179 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1180 int java_lang_Thread::_priority_offset = 0;
1181 int java_lang_Thread::_eetop_offset = 0;
1182 int java_lang_Thread::_daemon_offset = 0;
1183 int java_lang_Thread::_stillborn_offset = 0;
1184 int java_lang_Thread::_stackSize_offset = 0;
1185 int java_lang_Thread::_tid_offset = 0;
1186 int java_lang_Thread::_thread_status_offset = 0;
1187 int java_lang_Thread::_park_blocker_offset = 0;
1188 int java_lang_Thread::_park_event_offset = 0 ;
1189
1190
1191 void java_lang_Thread::compute_offsets() {
1192 assert(_group_offset == 0, "offsets should be initialized only once");
1193
1194 Klass* k = SystemDictionary::Thread_klass();
1195 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1196 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
1197 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
1198 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
1199 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
1200 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1201 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
1202 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
1203 // The stackSize field is only present starting in 1.4, so don't go fatal.
1204 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
1205 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
1206 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
1207 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
1208 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
1209 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
1210 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
1211 vmSymbols::long_signature());
1212 }
1213
1214
1215 JavaThread* java_lang_Thread::thread(oop java_thread) {
1216 return (JavaThread*)java_thread->address_field(_eetop_offset);
1217 }
1218
1219
1220 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1221 java_thread->address_field_put(_eetop_offset, (address)thread);
1222 }
1223
1224
1225 oop java_lang_Thread::name(oop java_thread) {
1226 return java_thread->obj_field(_name_offset);
1227 }
1228
1229
1230 void java_lang_Thread::set_name(oop java_thread, oop name) {
1231 java_thread->obj_field_put(_name_offset, name);
1232 }
1233
1234
1235 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1236 return (ThreadPriority)java_thread->int_field(_priority_offset);
1237 }
1238
1239
1240 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1241 java_thread->int_field_put(_priority_offset, priority);
1242 }
1243
1244
1245 oop java_lang_Thread::threadGroup(oop java_thread) {
1246 return java_thread->obj_field(_group_offset);
1247 }
1248
1249
1250 bool java_lang_Thread::is_stillborn(oop java_thread) {
1251 return java_thread->bool_field(_stillborn_offset) != 0;
1252 }
1253
1254
1255 // We never have reason to turn the stillborn bit off
1256 void java_lang_Thread::set_stillborn(oop java_thread) {
1257 java_thread->bool_field_put(_stillborn_offset, true);
1258 }
1259
1260
1261 bool java_lang_Thread::is_alive(oop java_thread) {
1262 JavaThread* thr = java_lang_Thread::thread(java_thread);
1263 return (thr != NULL);
1264 }
1265
1266
1267 bool java_lang_Thread::is_daemon(oop java_thread) {
1268 return java_thread->bool_field(_daemon_offset) != 0;
1269 }
1270
1271
1272 void java_lang_Thread::set_daemon(oop java_thread) {
1273 java_thread->bool_field_put(_daemon_offset, true);
1274 }
1275
1276 oop java_lang_Thread::context_class_loader(oop java_thread) {
1277 return java_thread->obj_field(_contextClassLoader_offset);
1278 }
1279
1280 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1281 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1282 }
1283
1284
1285 jlong java_lang_Thread::stackSize(oop java_thread) {
1286 if (_stackSize_offset > 0) {
1287 return java_thread->long_field(_stackSize_offset);
1288 } else {
1289 return 0;
1290 }
1291 }
1292
1293 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1294 void java_lang_Thread::set_thread_status(oop java_thread,
1295 java_lang_Thread::ThreadStatus status) {
1296 // The threadStatus is only present starting in 1.5
1297 if (_thread_status_offset > 0) {
1298 java_thread->int_field_put(_thread_status_offset, status);
1299 }
1300 }
1301
1302 // Read thread status value from threadStatus field in java.lang.Thread java class.
1303 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1304 assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() ||
1305 JavaThread::current()->thread_state() == _thread_in_vm,
1306 "Java Thread is not running in vm");
1307 // The threadStatus is only present starting in 1.5
1308 if (_thread_status_offset > 0) {
1309 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1310 } else {
1311 // All we can easily figure out is if it is alive, but that is
1312 // enough info for a valid unknown status.
1313 // These aren't restricted to valid set ThreadStatus values, so
1314 // use JVMTI values and cast.
1315 JavaThread* thr = java_lang_Thread::thread(java_thread);
1316 if (thr == NULL) {
1317 // the thread hasn't run yet or is in the process of exiting
1318 return NEW;
1319 }
1320 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1321 }
1322 }
1323
1324
1325 jlong java_lang_Thread::thread_id(oop java_thread) {
1326 // The thread ID field is only present starting in 1.5
1327 if (_tid_offset > 0) {
1328 return java_thread->long_field(_tid_offset);
1329 } else {
1330 return 0;
1331 }
1332 }
1333
1334 oop java_lang_Thread::park_blocker(oop java_thread) {
1335 assert(JDK_Version::current().supports_thread_park_blocker() &&
1336 _park_blocker_offset != 0, "Must support parkBlocker field");
1337
1338 if (_park_blocker_offset > 0) {
1339 return java_thread->obj_field(_park_blocker_offset);
1340 }
1341
1342 return NULL;
1343 }
1344
1345 jlong java_lang_Thread::park_event(oop java_thread) {
1346 if (_park_event_offset > 0) {
1347 return java_thread->long_field(_park_event_offset);
1348 }
1349 return 0;
1350 }
1351
1352 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1353 if (_park_event_offset > 0) {
1354 java_thread->long_field_put(_park_event_offset, ptr);
1355 return true;
1356 }
1357 return false;
1358 }
1359
1360
1361 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1362 assert(_thread_status_offset != 0, "Must have thread status");
1363 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1364 switch (status) {
1365 case NEW : return "NEW";
1366 case RUNNABLE : return "RUNNABLE";
1367 case SLEEPING : return "TIMED_WAITING (sleeping)";
1368 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1369 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1370 case PARKED : return "WAITING (parking)";
1371 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1372 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1373 case TERMINATED : return "TERMINATED";
1374 default : return "UNKNOWN";
1375 };
1376 }
1377 int java_lang_ThreadGroup::_parent_offset = 0;
1378 int java_lang_ThreadGroup::_name_offset = 0;
1379 int java_lang_ThreadGroup::_threads_offset = 0;
1380 int java_lang_ThreadGroup::_groups_offset = 0;
1381 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1382 int java_lang_ThreadGroup::_destroyed_offset = 0;
1383 int java_lang_ThreadGroup::_daemon_offset = 0;
1384 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0;
1385 int java_lang_ThreadGroup::_nthreads_offset = 0;
1386 int java_lang_ThreadGroup::_ngroups_offset = 0;
1387
1388 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1389 assert(java_thread_group->is_oop(), "thread group must be oop");
1390 return java_thread_group->obj_field(_parent_offset);
1391 }
1392
1393 // ("name as oop" accessor is not necessary)
1394
1395 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1396 oop name = java_thread_group->obj_field(_name_offset);
1397 // ThreadGroup.name can be null
1398 if (name != NULL) {
1399 return java_lang_String::as_utf8_string(name);
1400 }
1401 return NULL;
1402 }
1403
1404 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1405 assert(java_thread_group->is_oop(), "thread group must be oop");
1406 return java_thread_group->int_field(_nthreads_offset);
1407 }
1408
1409 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1410 oop threads = java_thread_group->obj_field(_threads_offset);
1411 assert(threads != NULL, "threadgroups should have threads");
1412 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1413 return objArrayOop(threads);
1414 }
1415
1416 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1417 assert(java_thread_group->is_oop(), "thread group must be oop");
1418 return java_thread_group->int_field(_ngroups_offset);
1419 }
1420
1421 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1422 oop groups = java_thread_group->obj_field(_groups_offset);
1423 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1424 return objArrayOop(groups);
1425 }
1426
1427 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1428 assert(java_thread_group->is_oop(), "thread group must be oop");
1429 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1430 }
1431
1432 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1433 assert(java_thread_group->is_oop(), "thread group must be oop");
1434 return java_thread_group->bool_field(_destroyed_offset) != 0;
1435 }
1436
1437 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1438 assert(java_thread_group->is_oop(), "thread group must be oop");
1439 return java_thread_group->bool_field(_daemon_offset) != 0;
1440 }
1441
1442 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) {
1443 assert(java_thread_group->is_oop(), "thread group must be oop");
1444 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0;
1445 }
1446
1447 void java_lang_ThreadGroup::compute_offsets() {
1448 assert(_parent_offset == 0, "offsets should be initialized only once");
1449
1450 Klass* k = SystemDictionary::ThreadGroup_klass();
1451
1452 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1453 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1454 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1455 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1456 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1457 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1458 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1459 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature());
1460 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1461 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1462 }
1463
1464
1465 void java_lang_Throwable::compute_offsets() {
1466 Klass* k = SystemDictionary::Throwable_klass();
1467 compute_offset(depth_offset, k, vmSymbols::depth_name(), vmSymbols::int_signature());
1468 }
1469
1470 oop java_lang_Throwable::unassigned_stacktrace() {
1471 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1472 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1473 if (UseCompressedOops) {
1474 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1475 } else {
1476 return oopDesc::load_decode_heap_oop((oop*)addr);
1477 }
1478 }
1479
1480 oop java_lang_Throwable::backtrace(oop throwable) {
1481 return throwable->obj_field_acquire(backtrace_offset);
1482 }
1483
1484
1485 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1486 throwable->release_obj_field_put(backtrace_offset, value);
1487 }
1488
1489 int java_lang_Throwable::depth(oop throwable) {
1490 return throwable->int_field(depth_offset);
1491 }
1492
1493 void java_lang_Throwable::set_depth(oop throwable, int value) {
1494 throwable->int_field_put(depth_offset, value);
1495 }
1496
1497 oop java_lang_Throwable::message(Handle throwable) {
1498 return throwable->obj_field(detailMessage_offset);
1499 }
1500
1501
1502 // Return Symbol for detailed_message or NULL
1503 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1504 PRESERVE_EXCEPTION_MARK; // Keep original exception
1505 oop detailed_message = java_lang_Throwable::message(throwable);
1506 if (detailed_message != NULL) {
1507 return java_lang_String::as_symbol(detailed_message, THREAD);
1508 }
1509 return NULL;
1510 }
1511
1512 void java_lang_Throwable::set_message(oop throwable, oop value) {
1513 throwable->obj_field_put(detailMessage_offset, value);
1514 }
1515
1516
1517 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1518 throwable->obj_field_put(stackTrace_offset, st_element_array);
1519 }
1520
1521 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1522 set_stacktrace(throwable, NULL);
1523 }
1524
1525
1526 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1527 ResourceMark rm;
1528 Klass* k = throwable->klass();
1529 assert(k != NULL, "just checking");
1530 st->print("%s", k->external_name());
1531 oop msg = message(throwable);
1532 if (msg != NULL) {
1533 st->print(": %s", java_lang_String::as_utf8_string(msg));
1534 }
1535 }
1536
1537 // After this many redefines, the stack trace is unreliable.
1538 const int MAX_VERSION = USHRT_MAX;
1539
1540 static inline bool version_matches(Method* method, int version) {
1541 assert(version < MAX_VERSION, "version is too big");
1542 return method != NULL && (method->constants()->version() == version);
1543 }
1544
1545
1546 // This class provides a simple wrapper over the internal structure of
1547 // exception backtrace to insulate users of the backtrace from needing
1548 // to know what it looks like.
1549 class BacktraceBuilder: public StackObj {
1550 friend class BacktraceIterator;
1551 private:
1552 Handle _backtrace;
1553 objArrayOop _head;
1554 typeArrayOop _methods;
1555 typeArrayOop _bcis;
1556 objArrayOop _mirrors;
1557 typeArrayOop _cprefs; // needed to insulate method name against redefinition
1558 int _index;
1559 NoSafepointVerifier _nsv;
1560
1561 enum {
1562 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1563 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1564 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1565 trace_cprefs_offset = java_lang_Throwable::trace_cprefs_offset,
1566 trace_next_offset = java_lang_Throwable::trace_next_offset,
1567 trace_size = java_lang_Throwable::trace_size,
1568 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1569 };
1570
1571 // get info out of chunks
1572 static typeArrayOop get_methods(objArrayHandle chunk) {
1573 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1574 assert(methods != NULL, "method array should be initialized in backtrace");
1575 return methods;
1576 }
1577 static typeArrayOop get_bcis(objArrayHandle chunk) {
1578 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1579 assert(bcis != NULL, "bci array should be initialized in backtrace");
1580 return bcis;
1581 }
1582 static objArrayOop get_mirrors(objArrayHandle chunk) {
1583 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1584 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1585 return mirrors;
1586 }
1587 static typeArrayOop get_cprefs(objArrayHandle chunk) {
1588 typeArrayOop cprefs = typeArrayOop(chunk->obj_at(trace_cprefs_offset));
1589 assert(cprefs != NULL, "cprefs array should be initialized in backtrace");
1590 return cprefs;
1591 }
1592
1593 public:
1594
1595 // constructor for new backtrace
1596 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _cprefs(NULL) {
1597 expand(CHECK);
1598 _backtrace = _head;
1599 _index = 0;
1600 }
1601
1602 BacktraceBuilder(objArrayHandle backtrace) {
1603 _methods = get_methods(backtrace);
1604 _bcis = get_bcis(backtrace);
1605 _mirrors = get_mirrors(backtrace);
1606 _cprefs = get_cprefs(backtrace);
1607 assert(_methods->length() == _bcis->length() &&
1608 _methods->length() == _mirrors->length(),
1609 "method and source information arrays should match");
1610
1611 // head is the preallocated backtrace
1612 _backtrace = _head = backtrace();
1613 _index = 0;
1614 }
1615
1616 void expand(TRAPS) {
1617 objArrayHandle old_head(THREAD, _head);
1618 PauseNoSafepointVerifier pnsv(&_nsv);
1619
1620 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1621 objArrayHandle new_head(THREAD, head);
1622
1623 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1624 typeArrayHandle new_methods(THREAD, methods);
1625
1626 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1627 typeArrayHandle new_bcis(THREAD, bcis);
1628
1629 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1630 objArrayHandle new_mirrors(THREAD, mirrors);
1631
1632 typeArrayOop cprefs = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1633 typeArrayHandle new_cprefs(THREAD, cprefs);
1634
1635 if (!old_head.is_null()) {
1636 old_head->obj_at_put(trace_next_offset, new_head());
1637 }
1638 new_head->obj_at_put(trace_methods_offset, new_methods());
1639 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1640 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1641 new_head->obj_at_put(trace_cprefs_offset, new_cprefs());
1642
1643 _head = new_head();
1644 _methods = new_methods();
1645 _bcis = new_bcis();
1646 _mirrors = new_mirrors();
1647 _cprefs = new_cprefs();
1648 _index = 0;
1649 }
1650
1651 oop backtrace() {
1652 return _backtrace();
1653 }
1654
1655 inline void push(Method* method, int bci, TRAPS) {
1656 // Smear the -1 bci to 0 since the array only holds unsigned
1657 // shorts. The later line number lookup would just smear the -1
1658 // to a 0 even if it could be recorded.
1659 if (bci == SynchronizationEntryBCI) bci = 0;
1660
1661 if (_index >= trace_chunk_size) {
1662 methodHandle mhandle(THREAD, method);
1663 expand(CHECK);
1664 method = mhandle();
1665 }
1666
1667 _methods->short_at_put(_index, method->orig_method_idnum());
1668 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
1669 _cprefs->short_at_put(_index, method->name_index());
1670
1671 // We need to save the mirrors in the backtrace to keep the class
1672 // from being unloaded while we still have this stack trace.
1673 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1674 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1675 _index++;
1676 }
1677
1678 };
1679
1680 struct BacktraceElement : public StackObj {
1681 int _method_id;
1682 int _bci;
1683 int _version;
1684 int _cpref;
1685 Handle _mirror;
1686 BacktraceElement(Handle mirror, int mid, int version, int bci, int cpref) :
1687 _mirror(mirror), _method_id(mid), _version(version), _bci(bci), _cpref(cpref) {}
1688 };
1689
1690 class BacktraceIterator : public StackObj {
1691 int _index;
1692 objArrayHandle _result;
1693 objArrayHandle _mirrors;
1694 typeArrayHandle _methods;
1695 typeArrayHandle _bcis;
1696 typeArrayHandle _cprefs;
1697
1698 void init(objArrayHandle result, Thread* thread) {
1699 // Get method id, bci, version and mirror from chunk
1700 _result = result;
1701 if (_result.not_null()) {
1702 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
1703 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
1704 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
1705 _cprefs = typeArrayHandle(thread, BacktraceBuilder::get_cprefs(_result));
1706 _index = 0;
1707 }
1708 }
1709 public:
1710 BacktraceIterator(objArrayHandle result, Thread* thread) {
1711 init(result, thread);
1712 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
1713 }
1714
1715 BacktraceElement next(Thread* thread) {
1716 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
1717 _methods->short_at(_index),
1718 Backtrace::version_at(_bcis->int_at(_index)),
1719 Backtrace::bci_at(_bcis->int_at(_index)),
1720 _cprefs->short_at(_index));
1721 _index++;
1722
1723 if (_index >= java_lang_Throwable::trace_chunk_size) {
1724 int next_offset = java_lang_Throwable::trace_next_offset;
1725 // Get next chunk
1726 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
1727 init(result, thread);
1728 }
1729 return e;
1730 }
1731
1732 bool repeat() {
1733 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
1734 }
1735 };
1736
1737
1738 // Print stack trace element to resource allocated buffer
1739 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
1740 int version, int bci, int cpref) {
1741 ResourceMark rm;
1742
1743 // Get strings and string lengths
1744 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1745 const char* klass_name = holder->external_name();
1746 int buf_len = (int)strlen(klass_name);
1747
1748 Method* method = holder->method_with_orig_idnum(method_id, version);
1749
1750 // The method can be NULL if the requested class version is gone
1751 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
1752 char* method_name = sym->as_C_string();
1753 buf_len += (int)strlen(method_name);
1754
1755 char* source_file_name = NULL;
1756 Symbol* source = Backtrace::get_source_file_name(holder, version);
1757 if (source != NULL) {
1758 source_file_name = source->as_C_string();
1759 buf_len += (int)strlen(source_file_name);
1760 }
1761
1762 char *module_name = NULL, *module_version = NULL;
1763 ModuleEntry* module = holder->module();
1764 if (module->is_named()) {
1765 module_name = module->name()->as_C_string();
1766 buf_len += (int)strlen(module_name);
1767 if (module->version() != NULL) {
1768 module_version = module->version()->as_C_string();
1769 buf_len += (int)strlen(module_version);
1770 }
1771 }
1772
1773 // Allocate temporary buffer with extra space for formatting and line number
1774 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1775
1776 // Print stack trace line in buffer
1777 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
1778
1779 // Print module information
1780 if (module_name != NULL) {
1781 if (module_version != NULL) {
1782 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
1783 } else {
1784 sprintf(buf + (int)strlen(buf), "%s/", module_name);
1785 }
1786 }
1787
1788 if (!version_matches(method, version)) {
1789 strcat(buf, "Redefined)");
1790 } else {
1791 int line_number = Backtrace::get_line_number(method, bci);
1792 if (line_number == -2) {
1793 strcat(buf, "Native Method)");
1794 } else {
1795 if (source_file_name != NULL && (line_number != -1)) {
1796 // Sourcename and linenumber
1797 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
1798 } else if (source_file_name != NULL) {
1799 // Just sourcename
1800 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
1801 } else {
1802 // Neither sourcename nor linenumber
1803 sprintf(buf + (int)strlen(buf), "Unknown Source)");
1804 }
1805 CompiledMethod* nm = method->code();
1806 if (WizardMode && nm != NULL) {
1807 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1808 }
1809 }
1810 }
1811
1812 st->print_cr("%s", buf);
1813 }
1814
1815 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
1816 Handle mirror = method->method_holder()->java_mirror();
1817 int method_id = method->orig_method_idnum();
1818 int version = method->constants()->version();
1819 int cpref = method->name_index();
1820 print_stack_element_to_stream(st, mirror, method_id, version, bci, cpref);
1821 }
1822
1823 /**
1824 * Print the throwable message and its stack trace plus all causes by walking the
1825 * cause chain. The output looks the same as of Throwable.printStackTrace().
1826 */
1827 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
1828 // First, print the message.
1829 print(throwable, st);
1830 st->cr();
1831
1832 // Now print the stack trace.
1833 Thread* THREAD = Thread::current();
1834 while (throwable.not_null()) {
1835 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
1836 if (result.is_null()) {
1837 st->print_raw_cr("\t<<no stack trace available>>");
1838 return;
1839 }
1840 BacktraceIterator iter(result, THREAD);
1841
1842 while (iter.repeat()) {
1843 BacktraceElement bte = iter.next(THREAD);
1844 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._cpref);
1845 }
1846 {
1847 // Call getCause() which doesn't necessarily return the _cause field.
1848 EXCEPTION_MARK;
1849 JavaValue cause(T_OBJECT);
1850 JavaCalls::call_virtual(&cause,
1851 throwable,
1852 KlassHandle(THREAD, throwable->klass()),
1853 vmSymbols::getCause_name(),
1854 vmSymbols::void_throwable_signature(),
1855 THREAD);
1856 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1857 if (HAS_PENDING_EXCEPTION) {
1858 CLEAR_PENDING_EXCEPTION;
1859 throwable = Handle();
1860 } else {
1861 throwable = Handle(THREAD, (oop) cause.get_jobject());
1862 if (throwable.not_null()) {
1863 st->print("Caused by: ");
1864 print(throwable, st);
1865 st->cr();
1866 }
1867 }
1868 }
1869 }
1870 }
1871
1872 /**
1873 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
1874 */
1875 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
1876 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
1877 JavaValue result(T_VOID);
1878 JavaCalls::call_virtual(&result,
1879 throwable,
1880 KlassHandle(THREAD, SystemDictionary::Throwable_klass()),
1881 vmSymbols::printStackTrace_name(),
1882 vmSymbols::void_method_signature(),
1883 THREAD);
1884 }
1885
1886 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
1887 if (!StackTraceInThrowable) return;
1888 ResourceMark rm(THREAD);
1889
1890 // Start out by clearing the backtrace for this object, in case the VM
1891 // runs out of memory while allocating the stack trace
1892 set_backtrace(throwable(), NULL);
1893 // Clear lazily constructed Java level stacktrace if refilling occurs
1894 // This is unnecessary in 1.7+ but harmless
1895 clear_stacktrace(throwable());
1896
1897 int max_depth = MaxJavaStackTraceDepth;
1898 JavaThread* thread = (JavaThread*)THREAD;
1899
1900 BacktraceBuilder bt(CHECK);
1901
1902 // If there is no Java frame just return the method that was being called
1903 // with bci 0
1904 if (!thread->has_last_Java_frame()) {
1905 if (max_depth >= 1 && method() != NULL) {
1906 bt.push(method(), 0, CHECK);
1907 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
1908 set_depth(throwable(), 1);
1909 set_backtrace(throwable(), bt.backtrace());
1910 }
1911 return;
1912 }
1913
1914 // Instead of using vframe directly, this version of fill_in_stack_trace
1915 // basically handles everything by hand. This significantly improved the
1916 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1917 // See bug 6333838 for more details.
1918 // The "ASSERT" here is to verify this method generates the exactly same stack
1919 // trace as utilizing vframe.
1920 #ifdef ASSERT
1921 vframeStream st(thread);
1922 methodHandle st_method(THREAD, st.method());
1923 #endif
1924 int total_count = 0;
1925 RegisterMap map(thread, false);
1926 int decode_offset = 0;
1927 CompiledMethod* nm = NULL;
1928 bool skip_fillInStackTrace_check = false;
1929 bool skip_throwableInit_check = false;
1930 bool skip_hidden = !ShowHiddenFrames;
1931
1932 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1933 Method* method = NULL;
1934 int bci = 0;
1935
1936 // Compiled java method case.
1937 if (decode_offset != 0) {
1938 DebugInfoReadStream stream(nm, decode_offset);
1939 decode_offset = stream.read_int();
1940 method = (Method*)nm->metadata_at(stream.read_int());
1941 bci = stream.read_bci();
1942 } else {
1943 if (fr.is_first_frame()) break;
1944 address pc = fr.pc();
1945 if (fr.is_interpreted_frame()) {
1946 address bcp = fr.interpreter_frame_bcp();
1947 method = fr.interpreter_frame_method();
1948 bci = method->bci_from(bcp);
1949 fr = fr.sender(&map);
1950 } else {
1951 CodeBlob* cb = fr.cb();
1952 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1953 // but non nmethod
1954 fr = fr.sender(&map);
1955 if (cb == NULL || !cb->is_compiled()) {
1956 continue;
1957 }
1958 nm = cb->as_compiled_method();
1959 if (nm->method()->is_native()) {
1960 method = nm->method();
1961 bci = 0;
1962 } else {
1963 PcDesc* pd = nm->pc_desc_at(pc);
1964 decode_offset = pd->scope_decode_offset();
1965 // if decode_offset is not equal to 0, it will execute the
1966 // "compiled java method case" at the beginning of the loop.
1967 continue;
1968 }
1969 }
1970 }
1971 #ifdef ASSERT
1972 assert(st_method() == method && st.bci() == bci,
1973 "Wrong stack trace");
1974 st.next();
1975 // vframeStream::method isn't GC-safe so store off a copy
1976 // of the Method* in case we GC.
1977 if (!st.at_end()) {
1978 st_method = st.method();
1979 }
1980 #endif
1981
1982 // the format of the stacktrace will be:
1983 // - 1 or more fillInStackTrace frames for the exception class (skipped)
1984 // - 0 or more <init> methods for the exception class (skipped)
1985 // - rest of the stack
1986
1987 if (!skip_fillInStackTrace_check) {
1988 if (method->name() == vmSymbols::fillInStackTrace_name() &&
1989 throwable->is_a(method->method_holder())) {
1990 continue;
1991 }
1992 else {
1993 skip_fillInStackTrace_check = true; // gone past them all
1994 }
1995 }
1996 if (!skip_throwableInit_check) {
1997 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
1998
1999 // skip <init> methods of the exception class and superclasses
2000 // This is simlar to classic VM.
2001 if (method->name() == vmSymbols::object_initializer_name() &&
2002 throwable->is_a(method->method_holder())) {
2003 continue;
2004 } else {
2005 // there are none or we've seen them all - either way stop checking
2006 skip_throwableInit_check = true;
2007 }
2008 }
2009 if (method->is_hidden()) {
2010 if (skip_hidden) continue;
2011 }
2012 bt.push(method, bci, CHECK);
2013 total_count++;
2014 }
2015
2016 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2017
2018 // Put completed stack trace into throwable object
2019 set_backtrace(throwable(), bt.backtrace());
2020 set_depth(throwable(), total_count);
2021 }
2022
2023 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2024 // No-op if stack trace is disabled
2025 if (!StackTraceInThrowable) {
2026 return;
2027 }
2028
2029 // Disable stack traces for some preallocated out of memory errors
2030 if (!Universe::should_fill_in_stack_trace(throwable)) {
2031 return;
2032 }
2033
2034 PRESERVE_EXCEPTION_MARK;
2035
2036 JavaThread* thread = JavaThread::active();
2037 fill_in_stack_trace(throwable, method, thread);
2038 // ignore exceptions thrown during stack trace filling
2039 CLEAR_PENDING_EXCEPTION;
2040 }
2041
2042 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2043 // Allocate stack trace - backtrace is created but not filled in
2044
2045 // No-op if stack trace is disabled
2046 if (!StackTraceInThrowable) return;
2047 BacktraceBuilder bt(CHECK); // creates a backtrace
2048 set_backtrace(throwable(), bt.backtrace());
2049 }
2050
2051
2052 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2053 // Fill in stack trace into preallocated backtrace (no GC)
2054
2055 // No-op if stack trace is disabled
2056 if (!StackTraceInThrowable) return;
2057
2058 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2059
2060 JavaThread* THREAD = JavaThread::current();
2061
2062 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2063 assert(backtrace.not_null(), "backtrace should have been preallocated");
2064
2065 ResourceMark rm(THREAD);
2066 vframeStream st(THREAD);
2067
2068 BacktraceBuilder bt(backtrace);
2069
2070 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2071 // methods as preallocated errors aren't created by "java" code.
2072
2073 // fill in as much stack trace as possible
2074 int chunk_count = 0;
2075 for (;!st.at_end(); st.next()) {
2076 bt.push(st.method(), st.bci(), CHECK);
2077 chunk_count++;
2078
2079 // Bail-out for deep stacks
2080 if (chunk_count >= trace_chunk_size) break;
2081 }
2082 set_depth(throwable(), chunk_count);
2083 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2084
2085 // We support the Throwable immutability protocol defined for Java 7.
2086 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2087 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2088 }
2089
2090 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2091 objArrayHandle stack_trace_array_h, TRAPS) {
2092
2093 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2094 THROW(vmSymbols::java_lang_NullPointerException());
2095 }
2096
2097 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2098
2099 if (stack_trace_array_h->length() != depth(throwable())) {
2100 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2101 }
2102
2103 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2104 BacktraceIterator iter(result, THREAD);
2105
2106 int index = 0;
2107 while (iter.repeat()) {
2108 BacktraceElement bte = iter.next(THREAD);
2109
2110 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2111
2112 if (stack_trace_element.is_null()) {
2113 THROW(vmSymbols::java_lang_NullPointerException());
2114 }
2115
2116 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2117 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2118
2119 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2120 method,
2121 bte._version,
2122 bte._bci,
2123 bte._cpref, CHECK);
2124 }
2125 }
2126
2127 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2128 // Allocate java.lang.StackTraceElement instance
2129 Klass* k = SystemDictionary::StackTraceElement_klass();
2130 assert(k != NULL, "must be loaded in 1.4+");
2131 instanceKlassHandle ik (THREAD, k);
2132 if (ik->should_be_initialized()) {
2133 ik->initialize(CHECK_0);
2134 }
2135
2136 Handle element = ik->allocate_instance_handle(CHECK_0);
2137
2138 int cpref = method->name_index();
2139 int version = method->constants()->version();
2140 fill_in(element, method->method_holder(), method, version, bci, cpref, CHECK_0);
2141 return element();
2142 }
2143
2144 void java_lang_StackTraceElement::fill_in(Handle element,
2145 InstanceKlass* holder, const methodHandle& method,
2146 int version, int bci, int cpref, TRAPS) {
2147 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2148
2149 // Fill in class name
2150 ResourceMark rm(THREAD);
2151 const char* str = holder->external_name();
2152 oop classname = StringTable::intern((char*) str, CHECK);
2153 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2154
2155 // The method can be NULL if the requested class version is gone
2156 Symbol* sym = !method.is_null() ? method->name() : holder->constants()->symbol_at(cpref);
2157
2158 // Fill in method name
2159 oop methodname = StringTable::intern(sym, CHECK);
2160 java_lang_StackTraceElement::set_methodName(element(), methodname);
2161
2162 // Fill in module name and version
2163 ModuleEntry* module = holder->module();
2164 if (module->is_named()) {
2165 oop module_name = StringTable::intern(module->name(), CHECK);
2166 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2167 oop module_version;
2168 if (module->version() != NULL) {
2169 module_version = StringTable::intern(module->version(), CHECK);
2170 } else {
2171 module_version = NULL;
2172 }
2173 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2174 }
2175
2176 if (!version_matches(method(), version)) {
2177 // The method was redefined, accurate line number information isn't available
2178 java_lang_StackTraceElement::set_fileName(element(), NULL);
2179 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2180 } else {
2181 // Fill in source file name and line number.
2182 Symbol* source = Backtrace::get_source_file_name(holder, version);
2183 if (ShowHiddenFrames && source == NULL)
2184 source = vmSymbols::unknown_class_name();
2185 oop filename = StringTable::intern(source, CHECK);
2186 java_lang_StackTraceElement::set_fileName(element(), filename);
2187
2188 int line_number = Backtrace::get_line_number(method, bci);
2189 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2190 }
2191 }
2192
2193 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2194 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2195 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2196 // we should expand MemberName::name when Throwable uses StackTrace
2197 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2198 return method;
2199 }
2200
2201 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci) {
2202 // set Method* or mid/cpref
2203 oop mname = stackFrame->obj_field(_memberName_offset);
2204 InstanceKlass* ik = method->method_holder();
2205 CallInfo info(method(), ik);
2206 MethodHandles::init_method_MemberName(mname, info);
2207 // set bci
2208 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2209 // method may be redefined; store the version
2210 int version = method->constants()->version();
2211 assert((jushort)version == version, "version should be short");
2212 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2213 }
2214
2215 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2216 ResourceMark rm(THREAD);
2217 Handle k (THREAD, stackFrame->obj_field(_declaringClass_offset));
2218 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(k()));
2219 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2220
2221 short version = stackFrame->short_field(_version_offset);
2222 short bci = stackFrame->short_field(_bci_offset);
2223 int cpref = method->name_index();
2224 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, cpref, CHECK);
2225 }
2226
2227 void java_lang_StackFrameInfo::compute_offsets() {
2228 Klass* k = SystemDictionary::StackFrameInfo_klass();
2229 compute_offset(_declaringClass_offset, k, vmSymbols::declaringClass_name(), vmSymbols::class_signature());
2230 compute_offset(_memberName_offset, k, vmSymbols::memberName_name(), vmSymbols::object_signature());
2231 compute_offset(_bci_offset, k, vmSymbols::bci_name(), vmSymbols::short_signature());
2232 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2233 }
2234
2235 void java_lang_LiveStackFrameInfo::compute_offsets() {
2236 Klass* k = SystemDictionary::LiveStackFrameInfo_klass();
2237 compute_offset(_monitors_offset, k, vmSymbols::monitors_name(), vmSymbols::object_array_signature());
2238 compute_offset(_locals_offset, k, vmSymbols::locals_name(), vmSymbols::object_array_signature());
2239 compute_offset(_operands_offset, k, vmSymbols::operands_name(), vmSymbols::object_array_signature());
2240 }
2241
2242 void java_lang_reflect_AccessibleObject::compute_offsets() {
2243 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
2244 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
2245 }
2246
2247 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2248 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2249 return (jboolean) reflect->bool_field(override_offset);
2250 }
2251
2252 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2253 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2254 reflect->bool_field_put(override_offset, (int) value);
2255 }
2256
2257 void java_lang_reflect_Method::compute_offsets() {
2258 Klass* k = SystemDictionary::reflect_Method_klass();
2259 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2260 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2261 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
2262 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2263 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2264 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2265 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2266 // The generic signature and annotations fields are only present in 1.5
2267 signature_offset = -1;
2268 annotations_offset = -1;
2269 parameter_annotations_offset = -1;
2270 annotation_default_offset = -1;
2271 type_annotations_offset = -1;
2272 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2273 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2274 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2275 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
2276 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2277 }
2278
2279 Handle java_lang_reflect_Method::create(TRAPS) {
2280 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2281 Klass* klass = SystemDictionary::reflect_Method_klass();
2282 // This class is eagerly initialized during VM initialization, since we keep a refence
2283 // to one of the methods
2284 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2285 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2286 }
2287
2288 oop java_lang_reflect_Method::clazz(oop reflect) {
2289 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2290 return reflect->obj_field(clazz_offset);
2291 }
2292
2293 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2294 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2295 reflect->obj_field_put(clazz_offset, value);
2296 }
2297
2298 int java_lang_reflect_Method::slot(oop reflect) {
2299 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2300 return reflect->int_field(slot_offset);
2301 }
2302
2303 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2304 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2305 reflect->int_field_put(slot_offset, value);
2306 }
2307
2308 oop java_lang_reflect_Method::name(oop method) {
2309 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2310 return method->obj_field(name_offset);
2311 }
2312
2313 void java_lang_reflect_Method::set_name(oop method, oop value) {
2314 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2315 method->obj_field_put(name_offset, value);
2316 }
2317
2318 oop java_lang_reflect_Method::return_type(oop method) {
2319 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2320 return method->obj_field(returnType_offset);
2321 }
2322
2323 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2324 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2325 method->obj_field_put(returnType_offset, value);
2326 }
2327
2328 oop java_lang_reflect_Method::parameter_types(oop method) {
2329 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2330 return method->obj_field(parameterTypes_offset);
2331 }
2332
2333 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2334 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2335 method->obj_field_put(parameterTypes_offset, value);
2336 }
2337
2338 oop java_lang_reflect_Method::exception_types(oop method) {
2339 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2340 return method->obj_field(exceptionTypes_offset);
2341 }
2342
2343 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2344 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2345 method->obj_field_put(exceptionTypes_offset, value);
2346 }
2347
2348 int java_lang_reflect_Method::modifiers(oop method) {
2349 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2350 return method->int_field(modifiers_offset);
2351 }
2352
2353 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2354 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2355 method->int_field_put(modifiers_offset, value);
2356 }
2357
2358 bool java_lang_reflect_Method::has_signature_field() {
2359 return (signature_offset >= 0);
2360 }
2361
2362 oop java_lang_reflect_Method::signature(oop method) {
2363 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2364 assert(has_signature_field(), "signature field must be present");
2365 return method->obj_field(signature_offset);
2366 }
2367
2368 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2369 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2370 assert(has_signature_field(), "signature field must be present");
2371 method->obj_field_put(signature_offset, value);
2372 }
2373
2374 bool java_lang_reflect_Method::has_annotations_field() {
2375 return (annotations_offset >= 0);
2376 }
2377
2378 oop java_lang_reflect_Method::annotations(oop method) {
2379 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2380 assert(has_annotations_field(), "annotations field must be present");
2381 return method->obj_field(annotations_offset);
2382 }
2383
2384 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2385 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2386 assert(has_annotations_field(), "annotations field must be present");
2387 method->obj_field_put(annotations_offset, value);
2388 }
2389
2390 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2391 return (parameter_annotations_offset >= 0);
2392 }
2393
2394 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2395 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2396 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2397 return method->obj_field(parameter_annotations_offset);
2398 }
2399
2400 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2401 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2402 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2403 method->obj_field_put(parameter_annotations_offset, value);
2404 }
2405
2406 bool java_lang_reflect_Method::has_annotation_default_field() {
2407 return (annotation_default_offset >= 0);
2408 }
2409
2410 oop java_lang_reflect_Method::annotation_default(oop method) {
2411 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2412 assert(has_annotation_default_field(), "annotation default field must be present");
2413 return method->obj_field(annotation_default_offset);
2414 }
2415
2416 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2417 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2418 assert(has_annotation_default_field(), "annotation default field must be present");
2419 method->obj_field_put(annotation_default_offset, value);
2420 }
2421
2422 bool java_lang_reflect_Method::has_type_annotations_field() {
2423 return (type_annotations_offset >= 0);
2424 }
2425
2426 oop java_lang_reflect_Method::type_annotations(oop method) {
2427 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2428 assert(has_type_annotations_field(), "type_annotations field must be present");
2429 return method->obj_field(type_annotations_offset);
2430 }
2431
2432 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2433 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2434 assert(has_type_annotations_field(), "type_annotations field must be present");
2435 method->obj_field_put(type_annotations_offset, value);
2436 }
2437
2438 void java_lang_reflect_Constructor::compute_offsets() {
2439 Klass* k = SystemDictionary::reflect_Constructor_klass();
2440 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2441 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2442 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2443 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2444 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2445 // The generic signature and annotations fields are only present in 1.5
2446 signature_offset = -1;
2447 annotations_offset = -1;
2448 parameter_annotations_offset = -1;
2449 type_annotations_offset = -1;
2450 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2451 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2452 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2453 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2454 }
2455
2456 Handle java_lang_reflect_Constructor::create(TRAPS) {
2457 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2458 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2459 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2460 instanceKlassHandle klass (THREAD, k);
2461 // Ensure it is initialized
2462 klass->initialize(CHECK_NH);
2463 return klass->allocate_instance_handle(THREAD);
2464 }
2465
2466 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2467 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2468 return reflect->obj_field(clazz_offset);
2469 }
2470
2471 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2472 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2473 reflect->obj_field_put(clazz_offset, value);
2474 }
2475
2476 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2477 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2478 return constructor->obj_field(parameterTypes_offset);
2479 }
2480
2481 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2482 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2483 constructor->obj_field_put(parameterTypes_offset, value);
2484 }
2485
2486 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2487 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2488 return constructor->obj_field(exceptionTypes_offset);
2489 }
2490
2491 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2492 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2493 constructor->obj_field_put(exceptionTypes_offset, value);
2494 }
2495
2496 int java_lang_reflect_Constructor::slot(oop reflect) {
2497 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2498 return reflect->int_field(slot_offset);
2499 }
2500
2501 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2502 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2503 reflect->int_field_put(slot_offset, value);
2504 }
2505
2506 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2507 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2508 return constructor->int_field(modifiers_offset);
2509 }
2510
2511 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2512 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2513 constructor->int_field_put(modifiers_offset, value);
2514 }
2515
2516 bool java_lang_reflect_Constructor::has_signature_field() {
2517 return (signature_offset >= 0);
2518 }
2519
2520 oop java_lang_reflect_Constructor::signature(oop constructor) {
2521 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2522 assert(has_signature_field(), "signature field must be present");
2523 return constructor->obj_field(signature_offset);
2524 }
2525
2526 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2527 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2528 assert(has_signature_field(), "signature field must be present");
2529 constructor->obj_field_put(signature_offset, value);
2530 }
2531
2532 bool java_lang_reflect_Constructor::has_annotations_field() {
2533 return (annotations_offset >= 0);
2534 }
2535
2536 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2537 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2538 assert(has_annotations_field(), "annotations field must be present");
2539 return constructor->obj_field(annotations_offset);
2540 }
2541
2542 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2543 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2544 assert(has_annotations_field(), "annotations field must be present");
2545 constructor->obj_field_put(annotations_offset, value);
2546 }
2547
2548 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2549 return (parameter_annotations_offset >= 0);
2550 }
2551
2552 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2553 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2554 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2555 return method->obj_field(parameter_annotations_offset);
2556 }
2557
2558 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2559 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2560 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2561 method->obj_field_put(parameter_annotations_offset, value);
2562 }
2563
2564 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2565 return (type_annotations_offset >= 0);
2566 }
2567
2568 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2569 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2570 assert(has_type_annotations_field(), "type_annotations field must be present");
2571 return constructor->obj_field(type_annotations_offset);
2572 }
2573
2574 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2575 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2576 assert(has_type_annotations_field(), "type_annotations field must be present");
2577 constructor->obj_field_put(type_annotations_offset, value);
2578 }
2579
2580 void java_lang_reflect_Field::compute_offsets() {
2581 Klass* k = SystemDictionary::reflect_Field_klass();
2582 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2583 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2584 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2585 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2586 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2587 // The generic signature and annotations fields are only present in 1.5
2588 signature_offset = -1;
2589 annotations_offset = -1;
2590 type_annotations_offset = -1;
2591 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2592 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2593 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2594 }
2595
2596 Handle java_lang_reflect_Field::create(TRAPS) {
2597 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2598 Symbol* name = vmSymbols::java_lang_reflect_Field();
2599 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2600 instanceKlassHandle klass (THREAD, k);
2601 // Ensure it is initialized
2602 klass->initialize(CHECK_NH);
2603 return klass->allocate_instance_handle(THREAD);
2604 }
2605
2606 oop java_lang_reflect_Field::clazz(oop reflect) {
2607 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2608 return reflect->obj_field(clazz_offset);
2609 }
2610
2611 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2612 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2613 reflect->obj_field_put(clazz_offset, value);
2614 }
2615
2616 oop java_lang_reflect_Field::name(oop field) {
2617 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2618 return field->obj_field(name_offset);
2619 }
2620
2621 void java_lang_reflect_Field::set_name(oop field, oop value) {
2622 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2623 field->obj_field_put(name_offset, value);
2624 }
2625
2626 oop java_lang_reflect_Field::type(oop field) {
2627 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2628 return field->obj_field(type_offset);
2629 }
2630
2631 void java_lang_reflect_Field::set_type(oop field, oop value) {
2632 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2633 field->obj_field_put(type_offset, value);
2634 }
2635
2636 int java_lang_reflect_Field::slot(oop reflect) {
2637 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2638 return reflect->int_field(slot_offset);
2639 }
2640
2641 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2642 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2643 reflect->int_field_put(slot_offset, value);
2644 }
2645
2646 int java_lang_reflect_Field::modifiers(oop field) {
2647 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2648 return field->int_field(modifiers_offset);
2649 }
2650
2651 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2652 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2653 field->int_field_put(modifiers_offset, value);
2654 }
2655
2656 bool java_lang_reflect_Field::has_signature_field() {
2657 return (signature_offset >= 0);
2658 }
2659
2660 oop java_lang_reflect_Field::signature(oop field) {
2661 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2662 assert(has_signature_field(), "signature field must be present");
2663 return field->obj_field(signature_offset);
2664 }
2665
2666 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2667 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2668 assert(has_signature_field(), "signature field must be present");
2669 field->obj_field_put(signature_offset, value);
2670 }
2671
2672 bool java_lang_reflect_Field::has_annotations_field() {
2673 return (annotations_offset >= 0);
2674 }
2675
2676 oop java_lang_reflect_Field::annotations(oop field) {
2677 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2678 assert(has_annotations_field(), "annotations field must be present");
2679 return field->obj_field(annotations_offset);
2680 }
2681
2682 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2683 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2684 assert(has_annotations_field(), "annotations field must be present");
2685 field->obj_field_put(annotations_offset, value);
2686 }
2687
2688 bool java_lang_reflect_Field::has_type_annotations_field() {
2689 return (type_annotations_offset >= 0);
2690 }
2691
2692 oop java_lang_reflect_Field::type_annotations(oop field) {
2693 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2694 assert(has_type_annotations_field(), "type_annotations field must be present");
2695 return field->obj_field(type_annotations_offset);
2696 }
2697
2698 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2699 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2700 assert(has_type_annotations_field(), "type_annotations field must be present");
2701 field->obj_field_put(type_annotations_offset, value);
2702 }
2703
2704 void reflect_ConstantPool::compute_offsets() {
2705 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2706 // This null test can be removed post beta
2707 if (k != NULL) {
2708 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2709 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2710 }
2711 }
2712
2713 void java_lang_reflect_Parameter::compute_offsets() {
2714 Klass* k = SystemDictionary::reflect_Parameter_klass();
2715 if(NULL != k) {
2716 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2717 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2718 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2719 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2720 }
2721 }
2722
2723 Handle java_lang_reflect_Parameter::create(TRAPS) {
2724 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2725 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2726 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2727 instanceKlassHandle klass (THREAD, k);
2728 // Ensure it is initialized
2729 klass->initialize(CHECK_NH);
2730 return klass->allocate_instance_handle(THREAD);
2731 }
2732
2733 oop java_lang_reflect_Parameter::name(oop param) {
2734 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2735 return param->obj_field(name_offset);
2736 }
2737
2738 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2739 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2740 param->obj_field_put(name_offset, value);
2741 }
2742
2743 int java_lang_reflect_Parameter::modifiers(oop param) {
2744 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2745 return param->int_field(modifiers_offset);
2746 }
2747
2748 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2749 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2750 param->int_field_put(modifiers_offset, value);
2751 }
2752
2753 int java_lang_reflect_Parameter::index(oop param) {
2754 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2755 return param->int_field(index_offset);
2756 }
2757
2758 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2759 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2760 param->int_field_put(index_offset, value);
2761 }
2762
2763 oop java_lang_reflect_Parameter::executable(oop param) {
2764 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2765 return param->obj_field(executable_offset);
2766 }
2767
2768 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2769 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2770 param->obj_field_put(executable_offset, value);
2771 }
2772
2773
2774 int java_lang_reflect_Module::loader_offset;
2775 int java_lang_reflect_Module::name_offset;
2776 int java_lang_reflect_Module::_module_entry_offset = -1;
2777
2778 Handle java_lang_reflect_Module::create(Handle loader, Handle module_name, TRAPS) {
2779 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2780
2781 Symbol* name = vmSymbols::java_lang_reflect_Module();
2782 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2783 instanceKlassHandle klass (THREAD, k);
2784
2785 Handle jlrmh = klass->allocate_instance_handle(CHECK_NH);
2786 JavaValue result(T_VOID);
2787 JavaCalls::call_special(&result, jlrmh, KlassHandle(THREAD, klass()),
2788 vmSymbols::object_initializer_name(),
2789 vmSymbols::java_lang_reflect_module_init_signature(),
2790 loader, module_name, CHECK_NH);
2791 return jlrmh;
2792 }
2793
2794 void java_lang_reflect_Module::compute_offsets() {
2795 Klass* k = SystemDictionary::reflect_Module_klass();
2796 if(NULL != k) {
2797 compute_offset(loader_offset, k, vmSymbols::loader_name(), vmSymbols::classloader_signature());
2798 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2799 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2800 }
2801 }
2802
2803
2804 oop java_lang_reflect_Module::loader(oop module) {
2805 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2806 return module->obj_field(loader_offset);
2807 }
2808
2809 void java_lang_reflect_Module::set_loader(oop module, oop value) {
2810 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2811 module->obj_field_put(loader_offset, value);
2812 }
2813
2814 oop java_lang_reflect_Module::name(oop module) {
2815 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2816 return module->obj_field(name_offset);
2817 }
2818
2819 void java_lang_reflect_Module::set_name(oop module, oop value) {
2820 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2821 module->obj_field_put(name_offset, value);
2822 }
2823
2824 ModuleEntry* java_lang_reflect_Module::module_entry(oop module, TRAPS) {
2825 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
2826 assert(module != NULL, "module can't be null");
2827 assert(module->is_oop(), "module must be oop");
2828
2829 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
2830 if (module_entry == NULL) {
2831 // If the inject field containing the ModuleEntry* is null then return the
2832 // class loader's unnamed module.
2833 oop loader = java_lang_reflect_Module::loader(module);
2834 Handle h_loader = Handle(THREAD, loader);
2835 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL);
2836 return loader_cld->modules()->unnamed_module();
2837 }
2838 return module_entry;
2839 }
2840
2841 void java_lang_reflect_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
2842 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
2843 assert(module != NULL, "module can't be null");
2844 assert(module->is_oop(), "module must be oop");
2845 module->address_field_put(_module_entry_offset, (address)module_entry);
2846 }
2847
2848 Handle reflect_ConstantPool::create(TRAPS) {
2849 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2850 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2851 instanceKlassHandle klass (THREAD, k);
2852 // Ensure it is initialized
2853 klass->initialize(CHECK_NH);
2854 return klass->allocate_instance_handle(THREAD);
2855 }
2856
2857
2858 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2859 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2860 oop mirror = value->pool_holder()->java_mirror();
2861 // Save the mirror to get back the constant pool.
2862 reflect->obj_field_put(_oop_offset, mirror);
2863 }
2864
2865 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
2866 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2867
2868 oop mirror = reflect->obj_field(_oop_offset);
2869 Klass* k = java_lang_Class::as_Klass(mirror);
2870 assert(k->is_instance_klass(), "Must be");
2871
2872 // Get the constant pool back from the klass. Since class redefinition
2873 // merges the new constant pool into the old, this is essentially the
2874 // same constant pool as the original. If constant pool merging is
2875 // no longer done in the future, this will have to change to save
2876 // the original.
2877 return InstanceKlass::cast(k)->constants();
2878 }
2879
2880 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2881 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2882 // This null test can be removed post beta
2883 if (k != NULL) {
2884 compute_offset(_base_offset, k,
2885 vmSymbols::base_name(), vmSymbols::object_signature());
2886 }
2887 }
2888
2889 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2890 Klass* k = SystemDictionary::box_klass(type);
2891 if (k == NULL) return NULL;
2892 instanceKlassHandle h (THREAD, k);
2893 if (!h->is_initialized()) h->initialize(CHECK_0);
2894 return h->allocate_instance(THREAD);
2895 }
2896
2897
2898 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2899 oop box = initialize_and_allocate(type, CHECK_0);
2900 if (box == NULL) return NULL;
2901 switch (type) {
2902 case T_BOOLEAN:
2903 box->bool_field_put(value_offset, value->z);
2904 break;
2905 case T_CHAR:
2906 box->char_field_put(value_offset, value->c);
2907 break;
2908 case T_FLOAT:
2909 box->float_field_put(value_offset, value->f);
2910 break;
2911 case T_DOUBLE:
2912 box->double_field_put(long_value_offset, value->d);
2913 break;
2914 case T_BYTE:
2915 box->byte_field_put(value_offset, value->b);
2916 break;
2917 case T_SHORT:
2918 box->short_field_put(value_offset, value->s);
2919 break;
2920 case T_INT:
2921 box->int_field_put(value_offset, value->i);
2922 break;
2923 case T_LONG:
2924 box->long_field_put(long_value_offset, value->j);
2925 break;
2926 default:
2927 return NULL;
2928 }
2929 return box;
2930 }
2931
2932
2933 BasicType java_lang_boxing_object::basic_type(oop box) {
2934 if (box == NULL) return T_ILLEGAL;
2935 BasicType type = SystemDictionary::box_klass_type(box->klass());
2936 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2937 return T_ILLEGAL;
2938 return type;
2939 }
2940
2941
2942 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2943 BasicType type = SystemDictionary::box_klass_type(box->klass());
2944 switch (type) {
2945 case T_BOOLEAN:
2946 value->z = box->bool_field(value_offset);
2947 break;
2948 case T_CHAR:
2949 value->c = box->char_field(value_offset);
2950 break;
2951 case T_FLOAT:
2952 value->f = box->float_field(value_offset);
2953 break;
2954 case T_DOUBLE:
2955 value->d = box->double_field(long_value_offset);
2956 break;
2957 case T_BYTE:
2958 value->b = box->byte_field(value_offset);
2959 break;
2960 case T_SHORT:
2961 value->s = box->short_field(value_offset);
2962 break;
2963 case T_INT:
2964 value->i = box->int_field(value_offset);
2965 break;
2966 case T_LONG:
2967 value->j = box->long_field(long_value_offset);
2968 break;
2969 default:
2970 return T_ILLEGAL;
2971 } // end switch
2972 return type;
2973 }
2974
2975
2976 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
2977 BasicType type = SystemDictionary::box_klass_type(box->klass());
2978 switch (type) {
2979 case T_BOOLEAN:
2980 box->bool_field_put(value_offset, value->z);
2981 break;
2982 case T_CHAR:
2983 box->char_field_put(value_offset, value->c);
2984 break;
2985 case T_FLOAT:
2986 box->float_field_put(value_offset, value->f);
2987 break;
2988 case T_DOUBLE:
2989 box->double_field_put(long_value_offset, value->d);
2990 break;
2991 case T_BYTE:
2992 box->byte_field_put(value_offset, value->b);
2993 break;
2994 case T_SHORT:
2995 box->short_field_put(value_offset, value->s);
2996 break;
2997 case T_INT:
2998 box->int_field_put(value_offset, value->i);
2999 break;
3000 case T_LONG:
3001 box->long_field_put(long_value_offset, value->j);
3002 break;
3003 default:
3004 return T_ILLEGAL;
3005 } // end switch
3006 return type;
3007 }
3008
3009
3010 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3011 switch (type) {
3012 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3013 case T_CHAR: st->print("%d", value->c); break;
3014 case T_BYTE: st->print("%d", value->b); break;
3015 case T_SHORT: st->print("%d", value->s); break;
3016 case T_INT: st->print("%d", value->i); break;
3017 case T_LONG: st->print(INT64_FORMAT, value->j); break;
3018 case T_FLOAT: st->print("%f", value->f); break;
3019 case T_DOUBLE: st->print("%lf", value->d); break;
3020 default: st->print("type %d?", type); break;
3021 }
3022 }
3023
3024
3025 // Support for java_lang_ref_Reference
3026 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() {
3027 InstanceKlass* ik = SystemDictionary::Reference_klass();
3028 address addr = ik->static_field_addr(static_lock_offset);
3029 return (HeapWord*) addr;
3030 }
3031
3032 oop java_lang_ref_Reference::pending_list_lock() {
3033 InstanceKlass* ik = SystemDictionary::Reference_klass();
3034 address addr = ik->static_field_addr(static_lock_offset);
3035 if (UseCompressedOops) {
3036 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
3037 } else {
3038 return oopDesc::load_decode_heap_oop((oop*)addr);
3039 }
3040 }
3041
3042 HeapWord *java_lang_ref_Reference::pending_list_addr() {
3043 InstanceKlass* ik = SystemDictionary::Reference_klass();
3044 address addr = ik->static_field_addr(static_pending_offset);
3045 // XXX This might not be HeapWord aligned, almost rather be char *.
3046 return (HeapWord*)addr;
3047 }
3048
3049 oop java_lang_ref_Reference::pending_list() {
3050 char *addr = (char *)pending_list_addr();
3051 if (UseCompressedOops) {
3052 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
3053 } else {
3054 return oopDesc::load_decode_heap_oop((oop*)addr);
3055 }
3056 }
3057
3058
3059 // Support for java_lang_ref_SoftReference
3060
3061 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3062 return ref->long_field(timestamp_offset);
3063 }
3064
3065 jlong java_lang_ref_SoftReference::clock() {
3066 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3067 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3068 return *offset;
3069 }
3070
3071 void java_lang_ref_SoftReference::set_clock(jlong value) {
3072 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3073 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3074 *offset = value;
3075 }
3076
3077 // Support for java_lang_invoke_DirectMethodHandle
3078
3079 int java_lang_invoke_DirectMethodHandle::_member_offset;
3080
3081 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3082 oop member_name = NULL;
3083 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
3084 assert(is_dmh, "a DirectMethodHandle oop is expected");
3085 if (is_dmh) {
3086 member_name = dmh->obj_field(member_offset_in_bytes());
3087 }
3088 return member_name;
3089 }
3090
3091 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3092 Klass* klass_oop = SystemDictionary::DirectMethodHandle_klass();
3093 if (klass_oop != NULL) {
3094 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
3095 }
3096 }
3097
3098 // Support for java_lang_invoke_MethodHandle
3099
3100 int java_lang_invoke_MethodHandle::_type_offset;
3101 int java_lang_invoke_MethodHandle::_form_offset;
3102
3103 int java_lang_invoke_MemberName::_clazz_offset;
3104 int java_lang_invoke_MemberName::_name_offset;
3105 int java_lang_invoke_MemberName::_type_offset;
3106 int java_lang_invoke_MemberName::_flags_offset;
3107 int java_lang_invoke_MemberName::_vmtarget_offset;
3108 int java_lang_invoke_MemberName::_vmloader_offset;
3109 int java_lang_invoke_MemberName::_vmindex_offset;
3110
3111 int java_lang_invoke_LambdaForm::_vmentry_offset;
3112
3113 void java_lang_invoke_MethodHandle::compute_offsets() {
3114 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
3115 if (klass_oop != NULL) {
3116 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
3117 compute_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
3118 }
3119 }
3120
3121 void java_lang_invoke_MemberName::compute_offsets() {
3122 Klass* klass_oop = SystemDictionary::MemberName_klass();
3123 if (klass_oop != NULL) {
3124 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
3125 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
3126 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
3127 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
3128 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3129 }
3130 }
3131
3132 void java_lang_invoke_LambdaForm::compute_offsets() {
3133 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
3134 if (klass_oop != NULL) {
3135 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
3136 }
3137 }
3138
3139 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3140 return obj != NULL && is_subclass(obj->klass());
3141 }
3142
3143
3144 oop java_lang_invoke_MethodHandle::type(oop mh) {
3145 return mh->obj_field(_type_offset);
3146 }
3147
3148 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3149 mh->obj_field_put(_type_offset, mtype);
3150 }
3151
3152 oop java_lang_invoke_MethodHandle::form(oop mh) {
3153 assert(_form_offset != 0, "");
3154 return mh->obj_field(_form_offset);
3155 }
3156
3157 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3158 assert(_form_offset != 0, "");
3159 mh->obj_field_put(_form_offset, lform);
3160 }
3161
3162 /// MemberName accessors
3163
3164 oop java_lang_invoke_MemberName::clazz(oop mname) {
3165 assert(is_instance(mname), "wrong type");
3166 return mname->obj_field(_clazz_offset);
3167 }
3168
3169 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3170 assert(is_instance(mname), "wrong type");
3171 mname->obj_field_put(_clazz_offset, clazz);
3172 }
3173
3174 oop java_lang_invoke_MemberName::name(oop mname) {
3175 assert(is_instance(mname), "wrong type");
3176 return mname->obj_field(_name_offset);
3177 }
3178
3179 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3180 assert(is_instance(mname), "wrong type");
3181 mname->obj_field_put(_name_offset, name);
3182 }
3183
3184 oop java_lang_invoke_MemberName::type(oop mname) {
3185 assert(is_instance(mname), "wrong type");
3186 return mname->obj_field(_type_offset);
3187 }
3188
3189 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3190 assert(is_instance(mname), "wrong type");
3191 mname->obj_field_put(_type_offset, type);
3192 }
3193
3194 int java_lang_invoke_MemberName::flags(oop mname) {
3195 assert(is_instance(mname), "wrong type");
3196 return mname->int_field(_flags_offset);
3197 }
3198
3199 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3200 assert(is_instance(mname), "wrong type");
3201 mname->int_field_put(_flags_offset, flags);
3202 }
3203
3204 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
3205 assert(is_instance(mname), "wrong type");
3206 return (Metadata*)mname->address_field(_vmtarget_offset);
3207 }
3208
3209 bool java_lang_invoke_MemberName::is_method(oop mname) {
3210 assert(is_instance(mname), "must be MemberName");
3211 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3212 }
3213
3214 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
3215 assert(is_instance(mname), "wrong type");
3216 // check the type of the vmtarget
3217 oop dependency = NULL;
3218 if (ref != NULL) {
3219 switch (flags(mname) & (MN_IS_METHOD |
3220 MN_IS_CONSTRUCTOR |
3221 MN_IS_FIELD)) {
3222 case MN_IS_METHOD:
3223 case MN_IS_CONSTRUCTOR:
3224 assert(ref->is_method(), "should be a method");
3225 dependency = ((Method*)ref)->method_holder()->java_mirror();
3226 break;
3227 case MN_IS_FIELD:
3228 assert(ref->is_klass(), "should be a class");
3229 dependency = ((Klass*)ref)->java_mirror();
3230 break;
3231 default:
3232 ShouldNotReachHere();
3233 }
3234 }
3235 mname->address_field_put(_vmtarget_offset, (address)ref);
3236 // Add a reference to the loader (actually mirror because anonymous classes will not have
3237 // distinct loaders) to ensure the metadata is kept alive
3238 // This mirror may be different than the one in clazz field.
3239 mname->obj_field_put(_vmloader_offset, dependency);
3240 }
3241
3242 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3243 assert(is_instance(mname), "wrong type");
3244 return (intptr_t) mname->address_field(_vmindex_offset);
3245 }
3246
3247 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3248 assert(is_instance(mname), "wrong type");
3249 mname->address_field_put(_vmindex_offset, (address) index);
3250 }
3251
3252 bool java_lang_invoke_MemberName::equals(oop mn1, oop mn2) {
3253 if (mn1 == mn2) {
3254 return true;
3255 }
3256 return (vmtarget(mn1) == vmtarget(mn2) && flags(mn1) == flags(mn2) &&
3257 vmindex(mn1) == vmindex(mn2) &&
3258 clazz(mn1) == clazz(mn2));
3259 }
3260
3261 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3262 assert(is_instance(lform), "wrong type");
3263 return lform->obj_field(_vmentry_offset);
3264 }
3265
3266
3267 // Support for java_lang_invoke_MethodType
3268
3269 int java_lang_invoke_MethodType::_rtype_offset;
3270 int java_lang_invoke_MethodType::_ptypes_offset;
3271
3272 void java_lang_invoke_MethodType::compute_offsets() {
3273 Klass* k = SystemDictionary::MethodType_klass();
3274 if (k != NULL) {
3275 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
3276 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
3277 }
3278 }
3279
3280 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3281 st->print("(");
3282 objArrayOop pts = ptypes(mt);
3283 for (int i = 0, limit = pts->length(); i < limit; i++) {
3284 java_lang_Class::print_signature(pts->obj_at(i), st);
3285 }
3286 st->print(")");
3287 java_lang_Class::print_signature(rtype(mt), st);
3288 }
3289
3290 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3291 ResourceMark rm;
3292 stringStream buffer(128);
3293 print_signature(mt, &buffer);
3294 const char* sigstr = buffer.base();
3295 int siglen = (int) buffer.size();
3296 Symbol *name;
3297 if (!intern_if_not_found) {
3298 name = SymbolTable::probe(sigstr, siglen);
3299 } else {
3300 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3301 }
3302 return name;
3303 }
3304
3305 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3306 if (mt1 == mt2)
3307 return true;
3308 if (rtype(mt1) != rtype(mt2))
3309 return false;
3310 if (ptype_count(mt1) != ptype_count(mt2))
3311 return false;
3312 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3313 if (ptype(mt1, i) != ptype(mt2, i))
3314 return false;
3315 }
3316 return true;
3317 }
3318
3319 oop java_lang_invoke_MethodType::rtype(oop mt) {
3320 assert(is_instance(mt), "must be a MethodType");
3321 return mt->obj_field(_rtype_offset);
3322 }
3323
3324 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3325 assert(is_instance(mt), "must be a MethodType");
3326 return (objArrayOop) mt->obj_field(_ptypes_offset);
3327 }
3328
3329 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3330 return ptypes(mt)->obj_at(idx);
3331 }
3332
3333 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3334 return ptypes(mt)->length();
3335 }
3336
3337 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3338 objArrayOop pts = ptypes(mt);
3339 int count = pts->length();
3340 int slots = 0;
3341 for (int i = 0; i < count; i++) {
3342 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3343 slots += type2size[bt];
3344 }
3345 return slots;
3346 }
3347
3348 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3349 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3350 return type2size[bt];
3351 }
3352
3353
3354 // Support for java_lang_invoke_CallSite
3355
3356 int java_lang_invoke_CallSite::_target_offset;
3357 int java_lang_invoke_CallSite::_context_offset;
3358
3359 void java_lang_invoke_CallSite::compute_offsets() {
3360 Klass* k = SystemDictionary::CallSite_klass();
3361 if (k != NULL) {
3362 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
3363 compute_offset(_context_offset, k, vmSymbols::context_name(),
3364 vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
3365 }
3366 }
3367
3368 oop java_lang_invoke_CallSite::context(oop call_site) {
3369 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3370
3371 oop dep_oop = call_site->obj_field(_context_offset);
3372 return dep_oop;
3373 }
3374
3375 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3376
3377 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3378
3379 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3380 Klass* k = SystemDictionary::Context_klass();
3381 if (k != NULL) {
3382 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3383 }
3384 }
3385
3386 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3387 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3388 intptr_t* vmdeps_addr = (intptr_t*)call_site->address_field_addr(_vmdependencies_offset);
3389 DependencyContext dep_ctx(vmdeps_addr);
3390 return dep_ctx;
3391 }
3392
3393 // Support for java_security_AccessControlContext
3394
3395 int java_security_AccessControlContext::_context_offset = 0;
3396 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3397 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3398 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3399
3400 void java_security_AccessControlContext::compute_offsets() {
3401 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3402 fieldDescriptor fd;
3403 InstanceKlass* ik = SystemDictionary::AccessControlContext_klass();
3404
3405 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
3406 fatal("Invalid layout of java.security.AccessControlContext");
3407 }
3408 _context_offset = fd.offset();
3409
3410 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
3411 fatal("Invalid layout of java.security.AccessControlContext");
3412 }
3413 _privilegedContext_offset = fd.offset();
3414
3415 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
3416 fatal("Invalid layout of java.security.AccessControlContext");
3417 }
3418 _isPrivileged_offset = fd.offset();
3419
3420 // The offset may not be present for bootstrapping with older JDK.
3421 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
3422 _isAuthorized_offset = fd.offset();
3423 }
3424 }
3425
3426
3427 bool java_security_AccessControlContext::is_authorized(Handle context) {
3428 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3429 assert(_isAuthorized_offset != -1, "should be set");
3430 return context->bool_field(_isAuthorized_offset) != 0;
3431 }
3432
3433 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3434 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3435 // Ensure klass is initialized
3436 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3437 // Allocate result
3438 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3439 // Fill in values
3440 result->obj_field_put(_context_offset, context());
3441 result->obj_field_put(_privilegedContext_offset, privileged_context());
3442 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3443 // whitelist AccessControlContexts created by the JVM if present
3444 if (_isAuthorized_offset != -1) {
3445 result->bool_field_put(_isAuthorized_offset, true);
3446 }
3447 return result;
3448 }
3449
3450
3451 // Support for java_lang_ClassLoader
3452
3453 bool java_lang_ClassLoader::offsets_computed = false;
3454 int java_lang_ClassLoader::_loader_data_offset = -1;
3455 int java_lang_ClassLoader::parallelCapable_offset = -1;
3456 int java_lang_ClassLoader::unnamedModule_offset = -1;
3457
3458 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
3459 assert(loader != NULL && loader->is_oop(), "loader must be oop");
3460 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
3461 }
3462
3463 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3464 return *java_lang_ClassLoader::loader_data_addr(loader);
3465 }
3466
3467 void java_lang_ClassLoader::compute_offsets() {
3468 assert(!offsets_computed, "offsets should be initialized only once");
3469 offsets_computed = true;
3470
3471 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
3472 Klass* k1 = SystemDictionary::ClassLoader_klass();
3473 compute_optional_offset(parallelCapable_offset,
3474 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
3475
3476 compute_offset(unnamedModule_offset,
3477 k1, vmSymbols::unnamedModule_name(), vmSymbols::module_signature());
3478
3479 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3480 }
3481
3482 oop java_lang_ClassLoader::parent(oop loader) {
3483 assert(is_instance(loader), "loader must be oop");
3484 return loader->obj_field(parent_offset);
3485 }
3486
3487 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
3488 assert(is_instance(loader), "loader must be oop");
3489 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
3490 oop acl = loader;
3491 debug_only(jint loop_count = 0);
3492 // This loop taken verbatim from ClassLoader.java:
3493 do {
3494 acl = parent(acl);
3495 if (cl == acl) {
3496 return true;
3497 }
3498 assert(++loop_count > 0, "loop_count overflow");
3499 } while (acl != NULL);
3500 return false;
3501 }
3502
3503 bool java_lang_ClassLoader::is_instance(oop obj) {
3504 return obj != NULL && is_subclass(obj->klass());
3505 }
3506
3507
3508 // For class loader classes, parallelCapable defined
3509 // based on non-null field
3510 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
3511 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
3512 if (parallelCapable_offset == -1) {
3513 // Default for backward compatibility is false
3514 return false;
3515 }
3516 return (class_loader->obj_field(parallelCapable_offset) != NULL);
3517 }
3518
3519 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
3520 // Fix for 4474172; see evaluation for more details
3521 loader = non_reflection_class_loader(loader);
3522
3523 oop cl = SystemDictionary::java_system_loader();
3524 while(cl != NULL) {
3525 if (cl == loader) return true;
3526 cl = parent(cl);
3527 }
3528 return false;
3529 }
3530
3531 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
3532 if (loader != NULL) {
3533 // See whether this is one of the class loaders associated with
3534 // the generated bytecodes for reflection, and if so, "magically"
3535 // delegate to its parent to prevent class loading from occurring
3536 // in places where applications using reflection didn't expect it.
3537 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
3538 // This might be null in non-1.4 JDKs
3539 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) {
3540 return parent(loader);
3541 }
3542 }
3543 return loader;
3544 }
3545
3546 oop java_lang_ClassLoader::unnamedModule(oop loader) {
3547 assert(is_instance(loader), "loader must be oop");
3548 return loader->obj_field(unnamedModule_offset);
3549 }
3550
3551 // Support for java_lang_System
3552 int java_lang_System::in_offset_in_bytes() {
3553 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
3554 }
3555
3556
3557 int java_lang_System::out_offset_in_bytes() {
3558 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
3559 }
3560
3561
3562 int java_lang_System::err_offset_in_bytes() {
3563 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
3564 }
3565
3566
3567 bool java_lang_System::has_security_manager() {
3568 InstanceKlass* ik = SystemDictionary::System_klass();
3569 address addr = ik->static_field_addr(static_security_offset);
3570 if (UseCompressedOops) {
3571 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
3572 } else {
3573 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
3574 }
3575 }
3576
3577 int java_lang_Class::_klass_offset;
3578 int java_lang_Class::_array_klass_offset;
3579 int java_lang_Class::_oop_size_offset;
3580 int java_lang_Class::_static_oop_field_count_offset;
3581 int java_lang_Class::_class_loader_offset;
3582 int java_lang_Class::_module_offset;
3583 int java_lang_Class::_protection_domain_offset;
3584 int java_lang_Class::_component_mirror_offset;
3585 int java_lang_Class::_init_lock_offset;
3586 int java_lang_Class::_signers_offset;
3587 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
3588 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
3589 int java_lang_Throwable::backtrace_offset;
3590 int java_lang_Throwable::detailMessage_offset;
3591 int java_lang_Throwable::stackTrace_offset;
3592 int java_lang_Throwable::depth_offset;
3593 int java_lang_Throwable::static_unassigned_stacktrace_offset;
3594 int java_lang_reflect_AccessibleObject::override_offset;
3595 int java_lang_reflect_Method::clazz_offset;
3596 int java_lang_reflect_Method::name_offset;
3597 int java_lang_reflect_Method::returnType_offset;
3598 int java_lang_reflect_Method::parameterTypes_offset;
3599 int java_lang_reflect_Method::exceptionTypes_offset;
3600 int java_lang_reflect_Method::slot_offset;
3601 int java_lang_reflect_Method::modifiers_offset;
3602 int java_lang_reflect_Method::signature_offset;
3603 int java_lang_reflect_Method::annotations_offset;
3604 int java_lang_reflect_Method::parameter_annotations_offset;
3605 int java_lang_reflect_Method::annotation_default_offset;
3606 int java_lang_reflect_Method::type_annotations_offset;
3607 int java_lang_reflect_Constructor::clazz_offset;
3608 int java_lang_reflect_Constructor::parameterTypes_offset;
3609 int java_lang_reflect_Constructor::exceptionTypes_offset;
3610 int java_lang_reflect_Constructor::slot_offset;
3611 int java_lang_reflect_Constructor::modifiers_offset;
3612 int java_lang_reflect_Constructor::signature_offset;
3613 int java_lang_reflect_Constructor::annotations_offset;
3614 int java_lang_reflect_Constructor::parameter_annotations_offset;
3615 int java_lang_reflect_Constructor::type_annotations_offset;
3616 int java_lang_reflect_Field::clazz_offset;
3617 int java_lang_reflect_Field::name_offset;
3618 int java_lang_reflect_Field::type_offset;
3619 int java_lang_reflect_Field::slot_offset;
3620 int java_lang_reflect_Field::modifiers_offset;
3621 int java_lang_reflect_Field::signature_offset;
3622 int java_lang_reflect_Field::annotations_offset;
3623 int java_lang_reflect_Field::type_annotations_offset;
3624 int java_lang_reflect_Parameter::name_offset;
3625 int java_lang_reflect_Parameter::modifiers_offset;
3626 int java_lang_reflect_Parameter::index_offset;
3627 int java_lang_reflect_Parameter::executable_offset;
3628 int java_lang_boxing_object::value_offset;
3629 int java_lang_boxing_object::long_value_offset;
3630 int java_lang_ref_Reference::referent_offset;
3631 int java_lang_ref_Reference::queue_offset;
3632 int java_lang_ref_Reference::next_offset;
3633 int java_lang_ref_Reference::discovered_offset;
3634 int java_lang_ref_Reference::static_lock_offset;
3635 int java_lang_ref_Reference::static_pending_offset;
3636 int java_lang_ref_Reference::number_of_fake_oop_fields;
3637 int java_lang_ref_SoftReference::timestamp_offset;
3638 int java_lang_ref_SoftReference::static_clock_offset;
3639 int java_lang_ClassLoader::parent_offset;
3640 int java_lang_System::static_in_offset;
3641 int java_lang_System::static_out_offset;
3642 int java_lang_System::static_err_offset;
3643 int java_lang_System::static_security_offset;
3644 int java_lang_StackTraceElement::declaringClass_offset;
3645 int java_lang_StackTraceElement::methodName_offset;
3646 int java_lang_StackTraceElement::fileName_offset;
3647 int java_lang_StackTraceElement::lineNumber_offset;
3648 int java_lang_StackTraceElement::moduleName_offset;
3649 int java_lang_StackTraceElement::moduleVersion_offset;
3650 int java_lang_StackFrameInfo::_declaringClass_offset;
3651 int java_lang_StackFrameInfo::_memberName_offset;
3652 int java_lang_StackFrameInfo::_bci_offset;
3653 int java_lang_StackFrameInfo::_version_offset;
3654 int java_lang_LiveStackFrameInfo::_monitors_offset;
3655 int java_lang_LiveStackFrameInfo::_locals_offset;
3656 int java_lang_LiveStackFrameInfo::_operands_offset;
3657 int java_lang_AssertionStatusDirectives::classes_offset;
3658 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3659 int java_lang_AssertionStatusDirectives::packages_offset;
3660 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3661 int java_lang_AssertionStatusDirectives::deflt_offset;
3662 int java_nio_Buffer::_limit_offset;
3663 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3664 int reflect_ConstantPool::_oop_offset;
3665 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3666
3667
3668 // Support for java_lang_StackTraceElement
3669
3670 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3671 element->obj_field_put(fileName_offset, value);
3672 }
3673
3674 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3675 element->obj_field_put(declaringClass_offset, value);
3676 }
3677
3678 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3679 element->obj_field_put(methodName_offset, value);
3680 }
3681
3682 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3683 element->int_field_put(lineNumber_offset, value);
3684 }
3685
3686 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
3687 element->obj_field_put(moduleName_offset, value);
3688 }
3689
3690 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
3691 element->obj_field_put(moduleVersion_offset, value);
3692 }
3693
3694 // Support for java_lang_StackFrameInfo
3695 void java_lang_StackFrameInfo::set_declaringClass(oop element, oop value) {
3696 element->obj_field_put(_declaringClass_offset, value);
3697 }
3698
3699 void java_lang_StackFrameInfo::set_version(oop element, short value) {
3700 element->short_field_put(_version_offset, value);
3701 }
3702
3703 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
3704 element->int_field_put(_bci_offset, value);
3705 }
3706
3707 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
3708 element->obj_field_put(_monitors_offset, value);
3709 }
3710
3711 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
3712 element->obj_field_put(_locals_offset, value);
3713 }
3714
3715 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
3716 element->obj_field_put(_operands_offset, value);
3717 }
3718
3719 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3720
3721 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3722 o->obj_field_put(classes_offset, val);
3723 }
3724
3725 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3726 o->obj_field_put(classEnabled_offset, val);
3727 }
3728
3729 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3730 o->obj_field_put(packages_offset, val);
3731 }
3732
3733 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3734 o->obj_field_put(packageEnabled_offset, val);
3735 }
3736
3737 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3738 o->bool_field_put(deflt_offset, val);
3739 }
3740
3741
3742 // Support for intrinsification of java.nio.Buffer.checkIndex
3743 int java_nio_Buffer::limit_offset() {
3744 return _limit_offset;
3745 }
3746
3747
3748 void java_nio_Buffer::compute_offsets() {
3749 Klass* k = SystemDictionary::nio_Buffer_klass();
3750 assert(k != NULL, "must be loaded in 1.4+");
3751 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3752 }
3753
3754 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3755 if (_owner_offset != 0) return;
3756
3757 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3758 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3759 compute_offset(_owner_offset, k,
3760 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3761 }
3762
3763 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3764 assert(_owner_offset != 0, "Must be initialized");
3765 return obj->obj_field(_owner_offset);
3766 }
3767
3768 // Compute hard-coded offsets
3769 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3770 // are not available to determine the offset_of_static_fields.
3771 void JavaClasses::compute_hard_coded_offsets() {
3772 const int x = heapOopSize;
3773 const int header = instanceOopDesc::base_offset_in_bytes();
3774
3775 // Throwable Class
3776 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3777 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3778 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3779 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3780
3781 // java_lang_boxing_object
3782 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3783 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3784
3785 // java_lang_ref_Reference:
3786 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3787 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3788 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3789 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3790 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x;
3791 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x;
3792 // Artificial fields for java_lang_ref_Reference
3793 // The first field is for the discovered field added in 1.4
3794 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3795
3796 // java_lang_ref_SoftReference Class
3797 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3798 // Don't multiply static fields because they are always in wordSize units
3799 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3800
3801 // java_lang_ClassLoader
3802 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3803
3804 // java_lang_System
3805 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3806 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3807 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3808 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3809
3810 // java_lang_StackTraceElement
3811 java_lang_StackTraceElement::moduleName_offset = java_lang_StackTraceElement::hc_moduleName_offset * x + header;
3812 java_lang_StackTraceElement::moduleVersion_offset = java_lang_StackTraceElement::hc_moduleVersion_offset * x + header;
3813 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3814 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3815 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3816 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3817 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3818 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3819 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3820 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3821 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3822
3823 }
3824
3825
3826 // Compute non-hard-coded field offsets of all the classes in this file
3827 void JavaClasses::compute_offsets() {
3828 // java_lang_Class::compute_offsets was called earlier in bootstrap
3829 java_lang_ClassLoader::compute_offsets();
3830 java_lang_Throwable::compute_offsets();
3831 java_lang_Thread::compute_offsets();
3832 java_lang_ThreadGroup::compute_offsets();
3833 java_lang_invoke_MethodHandle::compute_offsets();
3834 java_lang_invoke_DirectMethodHandle::compute_offsets();
3835 java_lang_invoke_MemberName::compute_offsets();
3836 java_lang_invoke_LambdaForm::compute_offsets();
3837 java_lang_invoke_MethodType::compute_offsets();
3838 java_lang_invoke_CallSite::compute_offsets();
3839 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
3840 java_security_AccessControlContext::compute_offsets();
3841 // Initialize reflection classes. The layouts of these classes
3842 // changed with the new reflection implementation in JDK 1.4, and
3843 // since the Universe doesn't know what JDK version it is until this
3844 // point we defer computation of these offsets until now.
3845 java_lang_reflect_AccessibleObject::compute_offsets();
3846 java_lang_reflect_Method::compute_offsets();
3847 java_lang_reflect_Constructor::compute_offsets();
3848 java_lang_reflect_Field::compute_offsets();
3849 java_nio_Buffer::compute_offsets();
3850 reflect_ConstantPool::compute_offsets();
3851 reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3852 java_lang_reflect_Parameter::compute_offsets();
3853 java_lang_reflect_Module::compute_offsets();
3854 java_lang_StackFrameInfo::compute_offsets();
3855 java_lang_LiveStackFrameInfo::compute_offsets();
3856
3857 // generated interpreter code wants to know about the offsets we just computed:
3858 AbstractAssembler::update_delayed_values();
3859 }
3860
3861 #ifndef PRODUCT
3862
3863 // These functions exist to assert the validity of hard-coded field offsets to guard
3864 // against changes in the class files
3865
3866 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3867 EXCEPTION_MARK;
3868 fieldDescriptor fd;
3869 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3870 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3871 instanceKlassHandle h_klass (THREAD, k);
3872 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3873 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3874 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3875 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3876 return false;
3877 }
3878 if (fd.is_static()) {
3879 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3880 return false;
3881 }
3882 if (fd.offset() == hardcoded_offset ) {
3883 return true;
3884 } else {
3885 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3886 klass_name, field_name, hardcoded_offset, fd.offset());
3887 return false;
3888 }
3889 }
3890
3891
3892 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3893 EXCEPTION_MARK;
3894 fieldDescriptor fd;
3895 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3896 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3897 instanceKlassHandle h_klass (THREAD, k);
3898 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3899 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3900 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3901 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3902 return false;
3903 }
3904 if (!fd.is_static()) {
3905 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3906 return false;
3907 }
3908 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3909 return true;
3910 } else {
3911 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());
3912 return false;
3913 }
3914 }
3915
3916
3917 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3918 EXCEPTION_MARK;
3919 fieldDescriptor fd;
3920 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3921 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3922 instanceKlassHandle h_klass (THREAD, k);
3923 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3924 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3925 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3926 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3927 return false;
3928 }
3929 if (!fd.is_static() || !fd.has_initial_value()) {
3930 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3931 return false;
3932 }
3933 if (!fd.initial_value_tag().is_int()) {
3934 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3935 return false;
3936 }
3937 jint field_value = fd.int_initial_value();
3938 if (field_value == hardcoded_constant) {
3939 return true;
3940 } else {
3941 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);
3942 return false;
3943 }
3944 }
3945
3946
3947 // Check the hard-coded field offsets of all the classes in this file
3948
3949 void JavaClasses::check_offsets() {
3950 bool valid = true;
3951 HandleMark hm;
3952
3953 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3954 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3955
3956 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3957 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3958
3959 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3960 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3961
3962 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3963 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3964
3965 // java.lang.String
3966
3967 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[B");
3968 if (java_lang_String::has_hash_field()) {
3969 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
3970 }
3971 if (java_lang_String::has_coder_field()) {
3972 CHECK_OFFSET("java/lang/String", java_lang_String, coder, "B");
3973 }
3974
3975 // java.lang.Class
3976
3977 // Fake fields
3978 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
3979 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
3980
3981 // java.lang.Throwable
3982
3983 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
3984 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
3985 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
3986 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, depth, "I");
3987
3988 // Boxed primitive objects (java_lang_boxing_object)
3989
3990 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
3991 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
3992 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
3993 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
3994 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
3995 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
3996 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
3997 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
3998
3999 // java.lang.ClassLoader
4000
4001 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
4002
4003 // java.lang.System
4004
4005 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
4006 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
4007 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
4008 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
4009
4010 // java.lang.StackTraceElement
4011
4012 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
4013 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
4014 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
4015 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
4016
4017 // java.lang.ref.Reference
4018
4019 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4020 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4021 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4022 // Fake field
4023 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4024 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;");
4025 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;");
4026
4027 // java.lang.ref.SoftReference
4028
4029 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
4030 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
4031
4032 // java.lang.AssertionStatusDirectives
4033 //
4034 // The CheckAssertionStatusDirectives boolean can be removed from here and
4035 // globals.hpp after the AssertionStatusDirectives class has been integrated
4036 // into merlin "for some time." Without it, the vm will fail with early
4037 // merlin builds.
4038
4039 if (CheckAssertionStatusDirectives) {
4040 const char* nm = "java/lang/AssertionStatusDirectives";
4041 const char* sig = "[Ljava/lang/String;";
4042 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
4043 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
4044 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
4045 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
4046 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
4047 }
4048
4049 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4050 }
4051
4052 #endif // PRODUCT
4053
4054 int InjectedField::compute_offset() {
4055 InstanceKlass* ik = InstanceKlass::cast(klass());
4056 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4057 if (!may_be_java && !fs.access_flags().is_internal()) {
4058 // Only look at injected fields
4059 continue;
4060 }
4061 if (fs.name() == name() && fs.signature() == signature()) {
4062 return fs.offset();
4063 }
4064 }
4065 ResourceMark rm;
4066 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)" : "");
4067 #ifndef PRODUCT
4068 ik->print();
4069 tty->print_cr("all fields:");
4070 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4071 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4072 }
4073 #endif //PRODUCT
4074 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
4075 return -1;
4076 }
4077
4078 void javaClasses_init() {
4079 JavaClasses::compute_offsets();
4080 JavaClasses::check_offsets();
4081 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4082 }