1 /*
2 * Copyright (c) 1997, 2017, 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_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature());
167 compute_offset(coder_offset, k, vmSymbols::coder_name(), vmSymbols::byte_signature());
168
169 initialized = true;
170 }
171
172 class StringBoolFieldFixup : public FieldClosure {
173 private:
174 bool _value;
175 Symbol *_name;
176
177 public:
178 StringBoolFieldFixup(Symbol *name, bool value) : _name(name), _value(value) {}
179
180 void do_field(fieldDescriptor* fd) {
181 if (fd->name() == _name) {
182 oop mirror = fd->field_holder()->java_mirror();
183 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
184 assert(mirror != NULL, "String must have mirror already");
185 mirror->bool_field_put(fd->offset(), _value);
186 }
187 }
188 };
189
190 void java_lang_String::set_compact_strings(bool value) {
191 StringBoolFieldFixup fix(vmSymbols::compact_strings_name(), value);
192 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
193 }
194
195 void java_lang_String::set_debug_intrinsics(bool value) {
196 StringBoolFieldFixup fix(vmSymbols::debug_intrinsics_name(), value);
197 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
198 }
199
200 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
201 assert(initialized, "Must be initialized");
202 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
203
204 // Create the String object first, so there's a chance that the String
205 // and the char array it points to end up in the same cache line.
206 oop obj;
207 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
208
209 // Create the char array. The String object must be handlized here
210 // because GC can happen as a result of the allocation attempt.
211 Handle h_obj(THREAD, obj);
212 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
213 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
214
215 // Point the String at the char array
216 obj = h_obj();
217 set_value(obj, buffer);
218 // No need to zero the offset, allocation zero'ed the entire String object
219 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
220 return h_obj;
221 }
222
223 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
224 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
225 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
226 typeArrayOop buffer = value(h_obj());
227 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
228 if (is_latin1) {
229 for (int index = 0; index < length; index++) {
230 buffer->byte_at_put(index, (jbyte)unicode[index]);
231 }
232 } else {
233 for (int index = 0; index < length; index++) {
234 buffer->char_at_put(index, unicode[index]);
235 }
236 }
237
238 #ifdef ASSERT
239 {
240 ResourceMark rm;
241 char* expected = UNICODE::as_utf8(unicode, length);
242 char* actual = as_utf8_string(h_obj());
243 if (strcmp(expected, actual) != 0) {
244 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
245 ShouldNotReachHere();
246 }
247 }
248 #endif
249
250 return h_obj;
251 }
252
253 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
254 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
255 return h_obj();
256 }
257
258 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
259 if (utf8_str == NULL) {
260 return Handle();
261 }
262 bool has_multibyte, is_latin1;
263 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
264 if (!CompactStrings) {
265 has_multibyte = true;
266 is_latin1 = false;
267 }
268
269 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
270 if (length > 0) {
271 if (!has_multibyte) {
272 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
273 } else if (is_latin1) {
274 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
275 } else {
276 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
277 }
278 }
279
280 #ifdef ASSERT
281 // This check is too strict because the input string is not necessarily valid UTF8.
282 // For example, it may be created with arbitrary content via jni_NewStringUTF.
283 /*
284 {
285 ResourceMark rm;
286 const char* expected = utf8_str;
287 char* actual = as_utf8_string(h_obj());
288 if (strcmp(expected, actual) != 0) {
289 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
290 ShouldNotReachHere();
291 }
292 }
293 */
294 #endif
295
296 return h_obj;
297 }
298
299 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
300 Handle h_obj = create_from_str(utf8_str, CHECK_0);
301 return h_obj();
302 }
303
304 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
305 const char* utf8_str = (char*)symbol->bytes();
306 int utf8_len = symbol->utf8_length();
307
308 bool has_multibyte, is_latin1;
309 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
310 if (!CompactStrings) {
311 has_multibyte = true;
312 is_latin1 = false;
313 }
314
315 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
316 if (length > 0) {
317 if (!has_multibyte) {
318 strncpy((char*)value(h_obj())->byte_at_addr(0), utf8_str, length);
319 } else if (is_latin1) {
320 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
321 } else {
322 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
323 }
324 }
325
326 #ifdef ASSERT
327 {
328 ResourceMark rm;
329 const char* expected = symbol->as_utf8();
330 char* actual = as_utf8_string(h_obj());
331 if (strncmp(expected, actual, utf8_len) != 0) {
332 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
333 ShouldNotReachHere();
334 }
335 }
336 #endif
337
338 return h_obj;
339 }
340
341 // Converts a C string to a Java String based on current encoding
342 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
343 assert(str != NULL, "bad arguments");
344
345 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
346 static to_java_string_fn_t _to_java_string_fn = NULL;
347
348 if (_to_java_string_fn == NULL) {
349 void *lib_handle = os::native_java_library();
350 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
351 if (_to_java_string_fn == NULL) {
352 fatal("NewStringPlatform missing");
353 }
354 }
355
356 jstring js = NULL;
357 { JavaThread* thread = (JavaThread*)THREAD;
358 assert(thread->is_Java_thread(), "must be java thread");
359 HandleMark hm(thread);
360 ThreadToNativeFromVM ttn(thread);
361 js = (_to_java_string_fn)(thread->jni_environment(), str);
362 }
363 return Handle(THREAD, JNIHandles::resolve(js));
364 }
365
366 // Converts a Java String to a native C string that can be used for
367 // native OS calls.
368 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
369 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
370 static to_platform_string_fn_t _to_platform_string_fn = NULL;
371
372 if (_to_platform_string_fn == NULL) {
373 void *lib_handle = os::native_java_library();
374 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
375 if (_to_platform_string_fn == NULL) {
376 fatal("GetStringPlatformChars missing");
377 }
378 }
379
380 char *native_platform_string;
381 { JavaThread* thread = (JavaThread*)THREAD;
382 assert(thread->is_Java_thread(), "must be java thread");
383 JNIEnv *env = thread->jni_environment();
384 jstring js = (jstring) JNIHandles::make_local(env, java_string());
385 bool is_copy;
386 HandleMark hm(thread);
387 ThreadToNativeFromVM ttn(thread);
388 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
389 assert(is_copy == JNI_TRUE, "is_copy value changed");
390 JNIHandles::destroy_local(js);
391 }
392 return native_platform_string;
393 }
394
395 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
396 oop obj = java_string();
397 // Typical usage is to convert all '/' to '.' in string.
398 typeArrayOop value = java_lang_String::value(obj);
399 int length = java_lang_String::length(obj);
400 bool is_latin1 = java_lang_String::is_latin1(obj);
401
402 // First check if any from_char exist
403 int index; // Declared outside, used later
404 for (index = 0; index < length; index++) {
405 jchar c = !is_latin1 ? value->char_at(index) :
406 ((jchar) value->byte_at(index)) & 0xff;
407 if (c == from_char) {
408 break;
409 }
410 }
411 if (index == length) {
412 // No from_char, so do not copy.
413 return java_string;
414 }
415
416 // Check if result string will be latin1
417 bool to_is_latin1 = false;
418
419 // Replacement char must be latin1
420 if (CompactStrings && UNICODE::is_latin1(to_char)) {
421 if (is_latin1) {
422 // Source string is latin1 as well
423 to_is_latin1 = true;
424 } else if (!UNICODE::is_latin1(from_char)) {
425 // We are replacing an UTF16 char. Scan string to
426 // check if result can be latin1 encoded.
427 to_is_latin1 = true;
428 for (index = 0; index < length; index++) {
429 jchar c = value->char_at(index);
430 if (c != from_char && !UNICODE::is_latin1(c)) {
431 to_is_latin1 = false;
432 break;
433 }
434 }
435 }
436 }
437
438 // Create new UNICODE (or byte) buffer. Must handlize value because GC
439 // may happen during String and char array creation.
440 typeArrayHandle h_value(THREAD, value);
441 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
442 typeArrayOop from_buffer = h_value();
443 typeArrayOop to_buffer = java_lang_String::value(string());
444
445 // Copy contents
446 for (index = 0; index < length; index++) {
447 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
448 ((jchar) from_buffer->byte_at(index)) & 0xff;
449 if (c == from_char) {
450 c = to_char;
451 }
452 if (!to_is_latin1) {
453 to_buffer->char_at_put(index, c);
454 } else {
455 to_buffer->byte_at_put(index, (jbyte) c);
456 }
457 }
458 return string;
459 }
460
461 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
462 typeArrayOop value = java_lang_String::value(java_string);
463 length = java_lang_String::length(java_string);
464 bool is_latin1 = java_lang_String::is_latin1(java_string);
465
466 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
467 if (result != NULL) {
468 if (!is_latin1) {
469 for (int index = 0; index < length; index++) {
470 result[index] = value->char_at(index);
471 }
472 } else {
473 for (int index = 0; index < length; index++) {
474 result[index] = ((jchar) value->byte_at(index)) & 0xff;
475 }
476 }
477 } else {
478 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
479 }
480 return result;
481 }
482
483 unsigned int java_lang_String::hash_code(oop java_string) {
484 int length = java_lang_String::length(java_string);
485 // Zero length string will hash to zero with String.hashCode() function.
486 if (length == 0) return 0;
487
488 typeArrayOop value = java_lang_String::value(java_string);
489 bool is_latin1 = java_lang_String::is_latin1(java_string);
490
491 if (is_latin1) {
492 return java_lang_String::hash_code(value->byte_at_addr(0), length);
493 } else {
494 return java_lang_String::hash_code(value->char_at_addr(0), length);
495 }
496 }
497
498 char* java_lang_String::as_quoted_ascii(oop java_string) {
499 typeArrayOop value = java_lang_String::value(java_string);
500 int length = java_lang_String::length(java_string);
501 bool is_latin1 = java_lang_String::is_latin1(java_string);
502
503 if (length == 0) return NULL;
504
505 char* result;
506 int result_length;
507 if (!is_latin1) {
508 jchar* base = value->char_at_addr(0);
509 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
510 result = NEW_RESOURCE_ARRAY(char, result_length);
511 UNICODE::as_quoted_ascii(base, length, result, result_length);
512 } else {
513 jbyte* base = value->byte_at_addr(0);
514 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
515 result = NEW_RESOURCE_ARRAY(char, result_length);
516 UNICODE::as_quoted_ascii(base, length, result, result_length);
517 }
518 assert(result_length >= length + 1, "must not be shorter");
519 assert(result_length == (int)strlen(result) + 1, "must match");
520 return result;
521 }
522
523 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) {
524 oop obj = java_string();
525 typeArrayOop value = java_lang_String::value(obj);
526 int length = java_lang_String::length(obj);
527 bool is_latin1 = java_lang_String::is_latin1(obj);
528 if (!is_latin1) {
529 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
530 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
531 return sym;
532 } else {
533 ResourceMark rm;
534 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
535 const char* base = UNICODE::as_utf8(position, length);
536 Symbol* sym = SymbolTable::lookup(base, length, THREAD);
537 return sym;
538 }
539 }
540
541 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
542 typeArrayOop value = java_lang_String::value(java_string);
543 int length = java_lang_String::length(java_string);
544 bool is_latin1 = java_lang_String::is_latin1(java_string);
545 if (!is_latin1) {
546 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
547 return SymbolTable::probe_unicode(base, length);
548 } else {
549 ResourceMark rm;
550 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
551 const char* base = UNICODE::as_utf8(position, length);
552 return SymbolTable::probe(base, length);
553 }
554 }
555
556 int java_lang_String::utf8_length(oop java_string) {
557 typeArrayOop value = java_lang_String::value(java_string);
558 int length = java_lang_String::length(java_string);
559 bool is_latin1 = java_lang_String::is_latin1(java_string);
560 if (length == 0) {
561 return 0;
562 }
563 if (!is_latin1) {
564 return UNICODE::utf8_length(value->char_at_addr(0), length);
565 } else {
566 return UNICODE::utf8_length(value->byte_at_addr(0), length);
567 }
568 }
569
570 char* java_lang_String::as_utf8_string(oop java_string) {
571 typeArrayOop value = java_lang_String::value(java_string);
572 int length = java_lang_String::length(java_string);
573 bool is_latin1 = java_lang_String::is_latin1(java_string);
574 if (!is_latin1) {
575 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
576 return UNICODE::as_utf8(position, length);
577 } else {
578 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
579 return UNICODE::as_utf8(position, length);
580 }
581 }
582
583 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
584 typeArrayOop value = java_lang_String::value(java_string);
585 int length = java_lang_String::length(java_string);
586 bool is_latin1 = java_lang_String::is_latin1(java_string);
587 if (!is_latin1) {
588 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
589 return UNICODE::as_utf8(position, length, buf, buflen);
590 } else {
591 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
592 return UNICODE::as_utf8(position, length, buf, buflen);
593 }
594 }
595
596 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
597 typeArrayOop value = java_lang_String::value(java_string);
598 int length = java_lang_String::length(java_string);
599 assert(start + len <= length, "just checking");
600 bool is_latin1 = java_lang_String::is_latin1(java_string);
601 if (!is_latin1) {
602 jchar* position = value->char_at_addr(start);
603 return UNICODE::as_utf8(position, len);
604 } else {
605 jbyte* position = value->byte_at_addr(start);
606 return UNICODE::as_utf8(position, len);
607 }
608 }
609
610 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
611 typeArrayOop value = java_lang_String::value(java_string);
612 int length = java_lang_String::length(java_string);
613 assert(start + len <= length, "just checking");
614 bool is_latin1 = java_lang_String::is_latin1(java_string);
615 if (!is_latin1) {
616 jchar* position = value->char_at_addr(start);
617 return UNICODE::as_utf8(position, len, buf, buflen);
618 } else {
619 jbyte* position = value->byte_at_addr(start);
620 return UNICODE::as_utf8(position, len, buf, buflen);
621 }
622 }
623
624 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
625 assert(java_string->klass() == SystemDictionary::String_klass(),
626 "must be java_string");
627 typeArrayOop value = java_lang_String::value(java_string);
628 int length = java_lang_String::length(java_string);
629 if (length != len) {
630 return false;
631 }
632 bool is_latin1 = java_lang_String::is_latin1(java_string);
633 if (!is_latin1) {
634 for (int i = 0; i < len; i++) {
635 if (value->char_at(i) != chars[i]) {
636 return false;
637 }
638 }
639 } else {
640 for (int i = 0; i < len; i++) {
641 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
642 return false;
643 }
644 }
645 }
646 return true;
647 }
648
649 bool java_lang_String::equals(oop str1, oop str2) {
650 assert(str1->klass() == SystemDictionary::String_klass(),
651 "must be java String");
652 assert(str2->klass() == SystemDictionary::String_klass(),
653 "must be java String");
654 typeArrayOop value1 = java_lang_String::value(str1);
655 int length1 = java_lang_String::length(str1);
656 bool is_latin1 = java_lang_String::is_latin1(str1);
657 typeArrayOop value2 = java_lang_String::value(str2);
658 int length2 = java_lang_String::length(str2);
659 bool is_latin2 = java_lang_String::is_latin1(str2);
660
661 if ((length1 != length2) || (is_latin1 != is_latin2)) {
662 // Strings of different size or with different
663 // coders are never equal.
664 return false;
665 }
666 int blength1 = value1->length();
667 for (int i = 0; i < value1->length(); i++) {
668 if (value1->byte_at(i) != value2->byte_at(i)) {
669 return false;
670 }
671 }
672 return true;
673 }
674
675 void java_lang_String::print(oop java_string, outputStream* st) {
676 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
677 typeArrayOop value = java_lang_String::value(java_string);
678
679 if (value == NULL) {
680 // This can happen if, e.g., printing a String
681 // object before its initializer has been called
682 st->print("NULL");
683 return;
684 }
685
686 int length = java_lang_String::length(java_string);
687 bool is_latin1 = java_lang_String::is_latin1(java_string);
688
689 st->print("\"");
690 for (int index = 0; index < length; index++) {
691 st->print("%c", (!is_latin1) ? value->char_at(index) :
692 ((jchar) value->byte_at(index)) & 0xff );
693 }
694 st->print("\"");
695 }
696
697
698 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
699 assert(mirror.not_null() && fd->is_static(), "just checking");
700 if (fd->has_initial_value()) {
701 BasicType t = fd->field_type();
702 switch (t) {
703 case T_BYTE:
704 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
705 break;
706 case T_BOOLEAN:
707 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
708 break;
709 case T_CHAR:
710 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
711 break;
712 case T_SHORT:
713 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
714 break;
715 case T_INT:
716 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
717 break;
718 case T_FLOAT:
719 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
720 break;
721 case T_DOUBLE:
722 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
723 break;
724 case T_LONG:
725 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
726 break;
727 case T_OBJECT:
728 {
729 #ifdef ASSERT
730 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK);
731 assert(fd->signature() == sym, "just checking");
732 #endif
733 oop string = fd->string_initial_value(CHECK);
734 mirror()->obj_field_put(fd->offset(), string);
735 }
736 break;
737 default:
738 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
739 "Illegal ConstantValue attribute in class file");
740 }
741 }
742 }
743
744
745 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) {
746 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
747
748 // If the offset was read from the shared archive, it was fixed up already
749 if (!k->is_shared()) {
750 if (k->is_instance_klass()) {
751 // During bootstrap, java.lang.Class wasn't loaded so static field
752 // offsets were computed without the size added it. Go back and
753 // update all the static field offsets to included the size.
754 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) {
755 if (fs.access_flags().is_static()) {
756 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
757 fs.set_offset(real_offset);
758 }
759 }
760 }
761 }
762 create_mirror(k, Handle(NULL), Handle(NULL), Handle(NULL), CHECK);
763 }
764
765 void java_lang_Class::initialize_mirror_fields(KlassHandle k,
766 Handle mirror,
767 Handle protection_domain,
768 TRAPS) {
769 // Allocate a simple java object for a lock.
770 // This needs to be a java object because during class initialization
771 // it can be held across a java call.
772 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
773 set_init_lock(mirror(), r);
774
775 // Set protection domain also
776 set_protection_domain(mirror(), protection_domain());
777
778 // Initialize static fields
779 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, mirror, CHECK);
780 }
781
782 // Set the java.lang.reflect.Module module field in the java_lang_Class mirror
783 void java_lang_Class::set_mirror_module_field(KlassHandle k, Handle mirror, Handle module, TRAPS) {
784 if (module.is_null()) {
785 // During startup, the module may be NULL only if java.base has not been defined yet.
786 // Put the class on the fixup_module_list to patch later when the java.lang.reflect.Module
787 // for java.base is known.
788 assert(!Universe::is_module_initialized(), "Incorrect java.lang.reflect.Module pre module system initialization");
789
790 bool javabase_was_defined = false;
791 {
792 MutexLocker m1(Module_lock, THREAD);
793 // Keep list of classes needing java.base module fixup
794 if (!ModuleEntryTable::javabase_defined()) {
795 if (fixup_module_field_list() == NULL) {
796 GrowableArray<Klass*>* list =
797 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
798 set_fixup_module_field_list(list);
799 }
800 k->class_loader_data()->inc_keep_alive();
801 fixup_module_field_list()->push(k());
802 } else {
803 javabase_was_defined = true;
804 }
805 }
806
807 // If java.base was already defined then patch this particular class with java.base.
808 if (javabase_was_defined) {
809 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
810 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
811 "Setting class module field, " JAVA_BASE_NAME " should be defined");
812 Handle javabase_handle(THREAD, JNIHandles::resolve(javabase_entry->module()));
813 set_module(mirror(), javabase_handle());
814 }
815 } else {
816 assert(Universe::is_module_initialized() ||
817 (ModuleEntryTable::javabase_defined() &&
818 (module() == JNIHandles::resolve(ModuleEntryTable::javabase_moduleEntry()->module()))),
819 "Incorrect java.lang.reflect.Module specification while creating mirror");
820 set_module(mirror(), module());
821 }
822 }
823
824 void java_lang_Class::create_mirror(KlassHandle k, Handle class_loader,
825 Handle module, Handle protection_domain, TRAPS) {
826 assert(k->java_mirror() == NULL, "should only assign mirror once");
827 // Use this moment of initialization to cache modifier_flags also,
828 // to support Class.getModifiers(). Instance classes recalculate
829 // the cached flags after the class file is parsed, but before the
830 // class is put into the system dictionary.
831 int computed_modifiers = k->compute_modifier_flags(CHECK);
832 k->set_modifier_flags(computed_modifiers);
833 // Class_klass has to be loaded because it is used to allocate
834 // the mirror.
835 if (SystemDictionary::Class_klass_loaded()) {
836 // Allocate mirror (java.lang.Class instance)
837 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
838
839 // Setup indirection from mirror->klass
840 if (!k.is_null()) {
841 java_lang_Class::set_klass(mirror(), k());
842 }
843
844 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
845 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
846
847 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
848
849 // It might also have a component mirror. This mirror must already exist.
850 if (k->is_array_klass()) {
851 Handle comp_mirror;
852 if (k->is_typeArray_klass()) {
853 BasicType type = TypeArrayKlass::cast(k())->element_type();
854 comp_mirror = Universe::java_mirror(type);
855 } else {
856 assert(k->is_objArray_klass(), "Must be");
857 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass();
858 assert(element_klass != NULL, "Must have an element klass");
859 comp_mirror = element_klass->java_mirror();
860 }
861 assert(comp_mirror.not_null(), "must have a mirror");
862
863 // Two-way link between the array klass and its component mirror:
864 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
865 set_component_mirror(mirror(), comp_mirror());
866 set_array_klass(comp_mirror(), k());
867 } else {
868 assert(k->is_instance_klass(), "Must be");
869
870 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
871 if (HAS_PENDING_EXCEPTION) {
872 // If any of the fields throws an exception like OOM remove the klass field
873 // from the mirror so GC doesn't follow it after the klass has been deallocated.
874 // This mirror looks like a primitive type, which logically it is because it
875 // it represents no class.
876 java_lang_Class::set_klass(mirror(), NULL);
877 return;
878 }
879 }
880
881 // set the classLoader field in the java_lang_Class instance
882 assert(class_loader() == k->class_loader(), "should be same");
883 set_class_loader(mirror(), class_loader());
884
885 // set the module field in the java_lang_Class instance
886 set_mirror_module_field(k, mirror, module, THREAD);
887
888 // Setup indirection from klass->mirror last
889 // after any exceptions can happen during allocations.
890 if (!k.is_null()) {
891 k->set_java_mirror(mirror());
892 }
893 } else {
894 if (fixup_mirror_list() == NULL) {
895 GrowableArray<Klass*>* list =
896 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
897 set_fixup_mirror_list(list);
898 }
899 fixup_mirror_list()->push(k());
900 }
901 }
902
903 void java_lang_Class::fixup_module_field(KlassHandle k, Handle module) {
904 assert(_module_offset != 0, "must have been computed already");
905 java_lang_Class::set_module(k->java_mirror(), module());
906 }
907
908 int java_lang_Class::oop_size(oop java_class) {
909 assert(_oop_size_offset != 0, "must be set");
910 int size = java_class->int_field(_oop_size_offset);
911 assert(size > 0, "Oop size must be greater than zero, not %d", size);
912 return size;
913 }
914
915 void java_lang_Class::set_oop_size(oop java_class, int size) {
916 assert(_oop_size_offset != 0, "must be set");
917 assert(size > 0, "Oop size must be greater than zero, not %d", size);
918 java_class->int_field_put(_oop_size_offset, size);
919 }
920
921 int java_lang_Class::static_oop_field_count(oop java_class) {
922 assert(_static_oop_field_count_offset != 0, "must be set");
923 return java_class->int_field(_static_oop_field_count_offset);
924 }
925 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
926 assert(_static_oop_field_count_offset != 0, "must be set");
927 java_class->int_field_put(_static_oop_field_count_offset, size);
928 }
929
930 oop java_lang_Class::protection_domain(oop java_class) {
931 assert(_protection_domain_offset != 0, "must be set");
932 return java_class->obj_field(_protection_domain_offset);
933 }
934 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
935 assert(_protection_domain_offset != 0, "must be set");
936 java_class->obj_field_put(_protection_domain_offset, pd);
937 }
938
939 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
940 assert(_component_mirror_offset != 0, "must be set");
941 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
942 }
943 oop java_lang_Class::component_mirror(oop java_class) {
944 assert(_component_mirror_offset != 0, "must be set");
945 return java_class->obj_field(_component_mirror_offset);
946 }
947
948 oop java_lang_Class::init_lock(oop java_class) {
949 assert(_init_lock_offset != 0, "must be set");
950 return java_class->obj_field(_init_lock_offset);
951 }
952 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
953 assert(_init_lock_offset != 0, "must be set");
954 java_class->obj_field_put(_init_lock_offset, init_lock);
955 }
956
957 objArrayOop java_lang_Class::signers(oop java_class) {
958 assert(_signers_offset != 0, "must be set");
959 return (objArrayOop)java_class->obj_field(_signers_offset);
960 }
961 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
962 assert(_signers_offset != 0, "must be set");
963 java_class->obj_field_put(_signers_offset, (oop)signers);
964 }
965
966
967 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
968 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
969 if (_class_loader_offset != 0) {
970 java_class->obj_field_put(_class_loader_offset, loader);
971 }
972 }
973
974 oop java_lang_Class::class_loader(oop java_class) {
975 assert(_class_loader_offset != 0, "must be set");
976 return java_class->obj_field(_class_loader_offset);
977 }
978
979 oop java_lang_Class::module(oop java_class) {
980 assert(_module_offset != 0, "must be set");
981 return java_class->obj_field(_module_offset);
982 }
983
984 void java_lang_Class::set_module(oop java_class, oop module) {
985 assert(_module_offset != 0, "must be set");
986 java_class->obj_field_put(_module_offset, module);
987 }
988
989 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
990 // This should be improved by adding a field at the Java level or by
991 // introducing a new VM klass (see comment in ClassFileParser)
992 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
993 if (type != T_VOID) {
994 Klass* aklass = Universe::typeArrayKlassObj(type);
995 assert(aklass != NULL, "correct bootstrap");
996 set_array_klass(java_class, aklass);
997 }
998 #ifdef ASSERT
999 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1000 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1001 #endif
1002 return java_class;
1003 }
1004
1005
1006 Klass* java_lang_Class::as_Klass(oop java_class) {
1007 //%note memory_2
1008 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1009 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1010 assert(k == NULL || k->is_klass(), "type check");
1011 return k;
1012 }
1013
1014
1015 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1016 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1017 java_class->metadata_field_put(_klass_offset, klass);
1018 }
1019
1020
1021 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1022 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1023 Symbol* name = NULL;
1024 bool is_instance = false;
1025 if (is_primitive(java_class)) {
1026 name = vmSymbols::type_signature(primitive_type(java_class));
1027 } else {
1028 Klass* k = as_Klass(java_class);
1029 is_instance = k->is_instance_klass();
1030 name = k->name();
1031 }
1032 if (name == NULL) {
1033 st->print("<null>");
1034 return;
1035 }
1036 if (is_instance) st->print("L");
1037 st->write((char*) name->base(), (int) name->utf8_length());
1038 if (is_instance) st->print(";");
1039 }
1040
1041 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
1042 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1043 Symbol* name;
1044 if (is_primitive(java_class)) {
1045 name = vmSymbols::type_signature(primitive_type(java_class));
1046 // Because this can create a new symbol, the caller has to decrement
1047 // the refcount, so make adjustment here and below for symbols returned
1048 // that are not created or incremented due to a successful lookup.
1049 name->increment_refcount();
1050 } else {
1051 Klass* k = as_Klass(java_class);
1052 if (!k->is_instance_klass()) {
1053 name = k->name();
1054 name->increment_refcount();
1055 } else {
1056 ResourceMark rm;
1057 const char* sigstr = k->signature_name();
1058 int siglen = (int) strlen(sigstr);
1059 if (!intern_if_not_found) {
1060 name = SymbolTable::probe(sigstr, siglen);
1061 } else {
1062 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
1063 }
1064 }
1065 }
1066 return name;
1067 }
1068
1069 // Returns the Java name for this Java mirror (Resource allocated)
1070 // See Klass::external_name().
1071 // For primitive type Java mirrors, its type name is returned.
1072 const char* java_lang_Class::as_external_name(oop java_class) {
1073 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1074 const char* name = NULL;
1075 if (is_primitive(java_class)) {
1076 name = type2name(primitive_type(java_class));
1077 } else {
1078 name = as_Klass(java_class)->external_name();
1079 }
1080 if (name == NULL) {
1081 name = "<null>";
1082 }
1083 return name;
1084 }
1085
1086 Klass* java_lang_Class::array_klass(oop java_class) {
1087 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1088 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1089 return k;
1090 }
1091
1092
1093 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) {
1094 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1095 java_class->metadata_field_put(_array_klass_offset, klass);
1096 }
1097
1098
1099 bool java_lang_Class::is_primitive(oop java_class) {
1100 // should assert:
1101 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1102 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
1103
1104 #ifdef ASSERT
1105 if (is_primitive) {
1106 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1107 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
1108 "Should be either the T_VOID primitive or a java primitive");
1109 }
1110 #endif
1111
1112 return is_primitive;
1113 }
1114
1115
1116 BasicType java_lang_Class::primitive_type(oop java_class) {
1117 assert(java_lang_Class::is_primitive(java_class), "just checking");
1118 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1119 BasicType type = T_VOID;
1120 if (ak != NULL) {
1121 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1122 type = ArrayKlass::cast(ak)->element_type();
1123 } else {
1124 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1125 }
1126 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1127 return type;
1128 }
1129
1130 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1131 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1132 if (is_primitive(java_class)) {
1133 if (reference_klass != NULL)
1134 (*reference_klass) = NULL;
1135 return primitive_type(java_class);
1136 } else {
1137 if (reference_klass != NULL)
1138 (*reference_klass) = as_Klass(java_class);
1139 return T_OBJECT;
1140 }
1141 }
1142
1143
1144 oop java_lang_Class::primitive_mirror(BasicType t) {
1145 oop mirror = Universe::java_mirror(t);
1146 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1147 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1148 return mirror;
1149 }
1150
1151 bool java_lang_Class::offsets_computed = false;
1152 int java_lang_Class::classRedefinedCount_offset = -1;
1153
1154 void java_lang_Class::compute_offsets() {
1155 assert(!offsets_computed, "offsets should be initialized only once");
1156 offsets_computed = true;
1157
1158 Klass* k = SystemDictionary::Class_klass();
1159 // The classRedefinedCount field is only present starting in 1.5,
1160 // so don't go fatal.
1161 compute_optional_offset(classRedefinedCount_offset,
1162 k, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature());
1163
1164 // Needs to be optional because the old build runs Queens during bootstrapping
1165 // and jdk8-9 doesn't have coordinated pushes yet.
1166 compute_optional_offset(_class_loader_offset,
1167 k, vmSymbols::classLoader_name(),
1168 vmSymbols::classloader_signature());
1169
1170 compute_offset(_component_mirror_offset,
1171 k, vmSymbols::componentType_name(),
1172 vmSymbols::class_signature());
1173
1174 compute_offset(_module_offset,
1175 k, vmSymbols::module_name(),
1176 vmSymbols::module_signature());
1177
1178 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1179 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1180 // GC treats them the same.
1181 _init_lock_offset = _component_mirror_offset;
1182
1183 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1184 }
1185
1186 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1187 if (classRedefinedCount_offset == -1) {
1188 // If we don't have an offset for it then just return -1 as a marker.
1189 return -1;
1190 }
1191
1192 return the_class_mirror->int_field(classRedefinedCount_offset);
1193 }
1194
1195 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1196 if (classRedefinedCount_offset == -1) {
1197 // If we don't have an offset for it then nothing to set.
1198 return;
1199 }
1200
1201 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1202 }
1203
1204
1205 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1206 // platform thread structure, and a eetop offset which was used for thread
1207 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1208 // merged, so in the HotSpot VM we just use the eetop field for the thread
1209 // instead of the privateInfo_offset.
1210 //
1211 // Note: The stackSize field is only present starting in 1.4.
1212
1213 int java_lang_Thread::_name_offset = 0;
1214 int java_lang_Thread::_group_offset = 0;
1215 int java_lang_Thread::_contextClassLoader_offset = 0;
1216 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1217 int java_lang_Thread::_priority_offset = 0;
1218 int java_lang_Thread::_eetop_offset = 0;
1219 int java_lang_Thread::_daemon_offset = 0;
1220 int java_lang_Thread::_stillborn_offset = 0;
1221 int java_lang_Thread::_stackSize_offset = 0;
1222 int java_lang_Thread::_tid_offset = 0;
1223 int java_lang_Thread::_thread_status_offset = 0;
1224 int java_lang_Thread::_park_blocker_offset = 0;
1225 int java_lang_Thread::_park_event_offset = 0 ;
1226
1227
1228 void java_lang_Thread::compute_offsets() {
1229 assert(_group_offset == 0, "offsets should be initialized only once");
1230
1231 Klass* k = SystemDictionary::Thread_klass();
1232 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1233 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature());
1234 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature());
1235 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature());
1236 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature());
1237 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1238 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature());
1239 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature());
1240 // The stackSize field is only present starting in 1.4, so don't go fatal.
1241 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature());
1242 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal.
1243 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature());
1244 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature());
1245 // The parkBlocker field is only present starting in 1.6, so don't go fatal.
1246 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature());
1247 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(),
1248 vmSymbols::long_signature());
1249 }
1250
1251
1252 JavaThread* java_lang_Thread::thread(oop java_thread) {
1253 return (JavaThread*)java_thread->address_field(_eetop_offset);
1254 }
1255
1256
1257 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1258 java_thread->address_field_put(_eetop_offset, (address)thread);
1259 }
1260
1261
1262 oop java_lang_Thread::name(oop java_thread) {
1263 return java_thread->obj_field(_name_offset);
1264 }
1265
1266
1267 void java_lang_Thread::set_name(oop java_thread, oop name) {
1268 java_thread->obj_field_put(_name_offset, name);
1269 }
1270
1271
1272 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1273 return (ThreadPriority)java_thread->int_field(_priority_offset);
1274 }
1275
1276
1277 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1278 java_thread->int_field_put(_priority_offset, priority);
1279 }
1280
1281
1282 oop java_lang_Thread::threadGroup(oop java_thread) {
1283 return java_thread->obj_field(_group_offset);
1284 }
1285
1286
1287 bool java_lang_Thread::is_stillborn(oop java_thread) {
1288 return java_thread->bool_field(_stillborn_offset) != 0;
1289 }
1290
1291
1292 // We never have reason to turn the stillborn bit off
1293 void java_lang_Thread::set_stillborn(oop java_thread) {
1294 java_thread->bool_field_put(_stillborn_offset, true);
1295 }
1296
1297
1298 bool java_lang_Thread::is_alive(oop java_thread) {
1299 JavaThread* thr = java_lang_Thread::thread(java_thread);
1300 return (thr != NULL);
1301 }
1302
1303
1304 bool java_lang_Thread::is_daemon(oop java_thread) {
1305 return java_thread->bool_field(_daemon_offset) != 0;
1306 }
1307
1308
1309 void java_lang_Thread::set_daemon(oop java_thread) {
1310 java_thread->bool_field_put(_daemon_offset, true);
1311 }
1312
1313 oop java_lang_Thread::context_class_loader(oop java_thread) {
1314 return java_thread->obj_field(_contextClassLoader_offset);
1315 }
1316
1317 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1318 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1319 }
1320
1321
1322 jlong java_lang_Thread::stackSize(oop java_thread) {
1323 if (_stackSize_offset > 0) {
1324 return java_thread->long_field(_stackSize_offset);
1325 } else {
1326 return 0;
1327 }
1328 }
1329
1330 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1331 void java_lang_Thread::set_thread_status(oop java_thread,
1332 java_lang_Thread::ThreadStatus status) {
1333 // The threadStatus is only present starting in 1.5
1334 if (_thread_status_offset > 0) {
1335 java_thread->int_field_put(_thread_status_offset, status);
1336 }
1337 }
1338
1339 // Read thread status value from threadStatus field in java.lang.Thread java class.
1340 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1341 assert(Thread::current()->is_Watcher_thread() || Thread::current()->is_VM_thread() ||
1342 JavaThread::current()->thread_state() == _thread_in_vm,
1343 "Java Thread is not running in vm");
1344 // The threadStatus is only present starting in 1.5
1345 if (_thread_status_offset > 0) {
1346 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1347 } else {
1348 // All we can easily figure out is if it is alive, but that is
1349 // enough info for a valid unknown status.
1350 // These aren't restricted to valid set ThreadStatus values, so
1351 // use JVMTI values and cast.
1352 JavaThread* thr = java_lang_Thread::thread(java_thread);
1353 if (thr == NULL) {
1354 // the thread hasn't run yet or is in the process of exiting
1355 return NEW;
1356 }
1357 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1358 }
1359 }
1360
1361
1362 jlong java_lang_Thread::thread_id(oop java_thread) {
1363 // The thread ID field is only present starting in 1.5
1364 if (_tid_offset > 0) {
1365 return java_thread->long_field(_tid_offset);
1366 } else {
1367 return 0;
1368 }
1369 }
1370
1371 oop java_lang_Thread::park_blocker(oop java_thread) {
1372 assert(JDK_Version::current().supports_thread_park_blocker() &&
1373 _park_blocker_offset != 0, "Must support parkBlocker field");
1374
1375 if (_park_blocker_offset > 0) {
1376 return java_thread->obj_field(_park_blocker_offset);
1377 }
1378
1379 return NULL;
1380 }
1381
1382 jlong java_lang_Thread::park_event(oop java_thread) {
1383 if (_park_event_offset > 0) {
1384 return java_thread->long_field(_park_event_offset);
1385 }
1386 return 0;
1387 }
1388
1389 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1390 if (_park_event_offset > 0) {
1391 java_thread->long_field_put(_park_event_offset, ptr);
1392 return true;
1393 }
1394 return false;
1395 }
1396
1397
1398 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1399 assert(_thread_status_offset != 0, "Must have thread status");
1400 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1401 switch (status) {
1402 case NEW : return "NEW";
1403 case RUNNABLE : return "RUNNABLE";
1404 case SLEEPING : return "TIMED_WAITING (sleeping)";
1405 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1406 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1407 case PARKED : return "WAITING (parking)";
1408 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1409 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1410 case TERMINATED : return "TERMINATED";
1411 default : return "UNKNOWN";
1412 };
1413 }
1414 int java_lang_ThreadGroup::_parent_offset = 0;
1415 int java_lang_ThreadGroup::_name_offset = 0;
1416 int java_lang_ThreadGroup::_threads_offset = 0;
1417 int java_lang_ThreadGroup::_groups_offset = 0;
1418 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1419 int java_lang_ThreadGroup::_destroyed_offset = 0;
1420 int java_lang_ThreadGroup::_daemon_offset = 0;
1421 int java_lang_ThreadGroup::_nthreads_offset = 0;
1422 int java_lang_ThreadGroup::_ngroups_offset = 0;
1423
1424 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1425 assert(java_thread_group->is_oop(), "thread group must be oop");
1426 return java_thread_group->obj_field(_parent_offset);
1427 }
1428
1429 // ("name as oop" accessor is not necessary)
1430
1431 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1432 oop name = java_thread_group->obj_field(_name_offset);
1433 // ThreadGroup.name can be null
1434 if (name != NULL) {
1435 return java_lang_String::as_utf8_string(name);
1436 }
1437 return NULL;
1438 }
1439
1440 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1441 assert(java_thread_group->is_oop(), "thread group must be oop");
1442 return java_thread_group->int_field(_nthreads_offset);
1443 }
1444
1445 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1446 oop threads = java_thread_group->obj_field(_threads_offset);
1447 assert(threads != NULL, "threadgroups should have threads");
1448 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1449 return objArrayOop(threads);
1450 }
1451
1452 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1453 assert(java_thread_group->is_oop(), "thread group must be oop");
1454 return java_thread_group->int_field(_ngroups_offset);
1455 }
1456
1457 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1458 oop groups = java_thread_group->obj_field(_groups_offset);
1459 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1460 return objArrayOop(groups);
1461 }
1462
1463 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1464 assert(java_thread_group->is_oop(), "thread group must be oop");
1465 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1466 }
1467
1468 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1469 assert(java_thread_group->is_oop(), "thread group must be oop");
1470 return java_thread_group->bool_field(_destroyed_offset) != 0;
1471 }
1472
1473 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1474 assert(java_thread_group->is_oop(), "thread group must be oop");
1475 return java_thread_group->bool_field(_daemon_offset) != 0;
1476 }
1477
1478 void java_lang_ThreadGroup::compute_offsets() {
1479 assert(_parent_offset == 0, "offsets should be initialized only once");
1480
1481 Klass* k = SystemDictionary::ThreadGroup_klass();
1482
1483 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature());
1484 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
1485 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature());
1486 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature());
1487 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature());
1488 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature());
1489 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature());
1490 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature());
1491 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature());
1492 }
1493
1494
1495 void java_lang_Throwable::compute_offsets() {
1496 Klass* k = SystemDictionary::Throwable_klass();
1497 compute_offset(depth_offset, k, vmSymbols::depth_name(), vmSymbols::int_signature());
1498 }
1499
1500 oop java_lang_Throwable::unassigned_stacktrace() {
1501 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1502 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset);
1503 if (UseCompressedOops) {
1504 return oopDesc::load_decode_heap_oop((narrowOop *)addr);
1505 } else {
1506 return oopDesc::load_decode_heap_oop((oop*)addr);
1507 }
1508 }
1509
1510 oop java_lang_Throwable::backtrace(oop throwable) {
1511 return throwable->obj_field_acquire(backtrace_offset);
1512 }
1513
1514
1515 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1516 throwable->release_obj_field_put(backtrace_offset, value);
1517 }
1518
1519 int java_lang_Throwable::depth(oop throwable) {
1520 return throwable->int_field(depth_offset);
1521 }
1522
1523 void java_lang_Throwable::set_depth(oop throwable, int value) {
1524 throwable->int_field_put(depth_offset, value);
1525 }
1526
1527 oop java_lang_Throwable::message(Handle throwable) {
1528 return throwable->obj_field(detailMessage_offset);
1529 }
1530
1531
1532 // Return Symbol for detailed_message or NULL
1533 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1534 PRESERVE_EXCEPTION_MARK; // Keep original exception
1535 oop detailed_message = java_lang_Throwable::message(throwable);
1536 if (detailed_message != NULL) {
1537 return java_lang_String::as_symbol(detailed_message, THREAD);
1538 }
1539 return NULL;
1540 }
1541
1542 void java_lang_Throwable::set_message(oop throwable, oop value) {
1543 throwable->obj_field_put(detailMessage_offset, value);
1544 }
1545
1546
1547 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1548 throwable->obj_field_put(stackTrace_offset, st_element_array);
1549 }
1550
1551 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1552 set_stacktrace(throwable, NULL);
1553 }
1554
1555
1556 void java_lang_Throwable::print(Handle throwable, outputStream* st) {
1557 ResourceMark rm;
1558 Klass* k = throwable->klass();
1559 assert(k != NULL, "just checking");
1560 st->print("%s", k->external_name());
1561 oop msg = message(throwable);
1562 if (msg != NULL) {
1563 st->print(": %s", java_lang_String::as_utf8_string(msg));
1564 }
1565 }
1566
1567 // After this many redefines, the stack trace is unreliable.
1568 const int MAX_VERSION = USHRT_MAX;
1569
1570 static inline bool version_matches(Method* method, int version) {
1571 assert(version < MAX_VERSION, "version is too big");
1572 return method != NULL && (method->constants()->version() == version);
1573 }
1574
1575
1576 // This class provides a simple wrapper over the internal structure of
1577 // exception backtrace to insulate users of the backtrace from needing
1578 // to know what it looks like.
1579 class BacktraceBuilder: public StackObj {
1580 friend class BacktraceIterator;
1581 private:
1582 Handle _backtrace;
1583 objArrayOop _head;
1584 typeArrayOop _methods;
1585 typeArrayOop _bcis;
1586 objArrayOop _mirrors;
1587 typeArrayOop _cprefs; // needed to insulate method name against redefinition
1588 int _index;
1589 NoSafepointVerifier _nsv;
1590
1591 enum {
1592 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1593 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1594 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1595 trace_cprefs_offset = java_lang_Throwable::trace_cprefs_offset,
1596 trace_next_offset = java_lang_Throwable::trace_next_offset,
1597 trace_size = java_lang_Throwable::trace_size,
1598 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1599 };
1600
1601 // get info out of chunks
1602 static typeArrayOop get_methods(objArrayHandle chunk) {
1603 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1604 assert(methods != NULL, "method array should be initialized in backtrace");
1605 return methods;
1606 }
1607 static typeArrayOop get_bcis(objArrayHandle chunk) {
1608 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1609 assert(bcis != NULL, "bci array should be initialized in backtrace");
1610 return bcis;
1611 }
1612 static objArrayOop get_mirrors(objArrayHandle chunk) {
1613 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1614 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1615 return mirrors;
1616 }
1617 static typeArrayOop get_cprefs(objArrayHandle chunk) {
1618 typeArrayOop cprefs = typeArrayOop(chunk->obj_at(trace_cprefs_offset));
1619 assert(cprefs != NULL, "cprefs array should be initialized in backtrace");
1620 return cprefs;
1621 }
1622
1623 public:
1624
1625 // constructor for new backtrace
1626 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _cprefs(NULL) {
1627 expand(CHECK);
1628 _backtrace = _head;
1629 _index = 0;
1630 }
1631
1632 BacktraceBuilder(objArrayHandle backtrace) {
1633 _methods = get_methods(backtrace);
1634 _bcis = get_bcis(backtrace);
1635 _mirrors = get_mirrors(backtrace);
1636 _cprefs = get_cprefs(backtrace);
1637 assert(_methods->length() == _bcis->length() &&
1638 _methods->length() == _mirrors->length(),
1639 "method and source information arrays should match");
1640
1641 // head is the preallocated backtrace
1642 _backtrace = _head = backtrace();
1643 _index = 0;
1644 }
1645
1646 void expand(TRAPS) {
1647 objArrayHandle old_head(THREAD, _head);
1648 PauseNoSafepointVerifier pnsv(&_nsv);
1649
1650 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1651 objArrayHandle new_head(THREAD, head);
1652
1653 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1654 typeArrayHandle new_methods(THREAD, methods);
1655
1656 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1657 typeArrayHandle new_bcis(THREAD, bcis);
1658
1659 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1660 objArrayHandle new_mirrors(THREAD, mirrors);
1661
1662 typeArrayOop cprefs = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1663 typeArrayHandle new_cprefs(THREAD, cprefs);
1664
1665 if (!old_head.is_null()) {
1666 old_head->obj_at_put(trace_next_offset, new_head());
1667 }
1668 new_head->obj_at_put(trace_methods_offset, new_methods());
1669 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1670 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1671 new_head->obj_at_put(trace_cprefs_offset, new_cprefs());
1672
1673 _head = new_head();
1674 _methods = new_methods();
1675 _bcis = new_bcis();
1676 _mirrors = new_mirrors();
1677 _cprefs = new_cprefs();
1678 _index = 0;
1679 }
1680
1681 oop backtrace() {
1682 return _backtrace();
1683 }
1684
1685 inline void push(Method* method, int bci, TRAPS) {
1686 // Smear the -1 bci to 0 since the array only holds unsigned
1687 // shorts. The later line number lookup would just smear the -1
1688 // to a 0 even if it could be recorded.
1689 if (bci == SynchronizationEntryBCI) bci = 0;
1690
1691 if (_index >= trace_chunk_size) {
1692 methodHandle mhandle(THREAD, method);
1693 expand(CHECK);
1694 method = mhandle();
1695 }
1696
1697 _methods->short_at_put(_index, method->orig_method_idnum());
1698 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
1699 _cprefs->short_at_put(_index, method->name_index());
1700
1701 // We need to save the mirrors in the backtrace to keep the class
1702 // from being unloaded while we still have this stack trace.
1703 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1704 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1705 _index++;
1706 }
1707
1708 };
1709
1710 struct BacktraceElement : public StackObj {
1711 int _method_id;
1712 int _bci;
1713 int _version;
1714 int _cpref;
1715 Handle _mirror;
1716 BacktraceElement(Handle mirror, int mid, int version, int bci, int cpref) :
1717 _mirror(mirror), _method_id(mid), _version(version), _bci(bci), _cpref(cpref) {}
1718 };
1719
1720 class BacktraceIterator : public StackObj {
1721 int _index;
1722 objArrayHandle _result;
1723 objArrayHandle _mirrors;
1724 typeArrayHandle _methods;
1725 typeArrayHandle _bcis;
1726 typeArrayHandle _cprefs;
1727
1728 void init(objArrayHandle result, Thread* thread) {
1729 // Get method id, bci, version and mirror from chunk
1730 _result = result;
1731 if (_result.not_null()) {
1732 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
1733 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
1734 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
1735 _cprefs = typeArrayHandle(thread, BacktraceBuilder::get_cprefs(_result));
1736 _index = 0;
1737 }
1738 }
1739 public:
1740 BacktraceIterator(objArrayHandle result, Thread* thread) {
1741 init(result, thread);
1742 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
1743 }
1744
1745 BacktraceElement next(Thread* thread) {
1746 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
1747 _methods->short_at(_index),
1748 Backtrace::version_at(_bcis->int_at(_index)),
1749 Backtrace::bci_at(_bcis->int_at(_index)),
1750 _cprefs->short_at(_index));
1751 _index++;
1752
1753 if (_index >= java_lang_Throwable::trace_chunk_size) {
1754 int next_offset = java_lang_Throwable::trace_next_offset;
1755 // Get next chunk
1756 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
1757 init(result, thread);
1758 }
1759 return e;
1760 }
1761
1762 bool repeat() {
1763 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
1764 }
1765 };
1766
1767
1768 // Print stack trace element to resource allocated buffer
1769 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
1770 int version, int bci, int cpref) {
1771 ResourceMark rm;
1772
1773 // Get strings and string lengths
1774 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1775 const char* klass_name = holder->external_name();
1776 int buf_len = (int)strlen(klass_name);
1777
1778 Method* method = holder->method_with_orig_idnum(method_id, version);
1779
1780 // The method can be NULL if the requested class version is gone
1781 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
1782 char* method_name = sym->as_C_string();
1783 buf_len += (int)strlen(method_name);
1784
1785 char* source_file_name = NULL;
1786 Symbol* source = Backtrace::get_source_file_name(holder, version);
1787 if (source != NULL) {
1788 source_file_name = source->as_C_string();
1789 buf_len += (int)strlen(source_file_name);
1790 }
1791
1792 char *module_name = NULL, *module_version = NULL;
1793 ModuleEntry* module = holder->module();
1794 if (module->is_named()) {
1795 module_name = module->name()->as_C_string();
1796 buf_len += (int)strlen(module_name);
1797 if (module->version() != NULL) {
1798 module_version = module->version()->as_C_string();
1799 buf_len += (int)strlen(module_version);
1800 }
1801 }
1802
1803 // Allocate temporary buffer with extra space for formatting and line number
1804 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1805
1806 // Print stack trace line in buffer
1807 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
1808
1809 // Print module information
1810 if (module_name != NULL) {
1811 if (module_version != NULL) {
1812 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
1813 } else {
1814 sprintf(buf + (int)strlen(buf), "%s/", module_name);
1815 }
1816 }
1817
1818 if (!version_matches(method, version)) {
1819 strcat(buf, "Redefined)");
1820 } else {
1821 int line_number = Backtrace::get_line_number(method, bci);
1822 if (line_number == -2) {
1823 strcat(buf, "Native Method)");
1824 } else {
1825 if (source_file_name != NULL && (line_number != -1)) {
1826 // Sourcename and linenumber
1827 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
1828 } else if (source_file_name != NULL) {
1829 // Just sourcename
1830 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
1831 } else {
1832 // Neither sourcename nor linenumber
1833 sprintf(buf + (int)strlen(buf), "Unknown Source)");
1834 }
1835 CompiledMethod* nm = method->code();
1836 if (WizardMode && nm != NULL) {
1837 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1838 }
1839 }
1840 }
1841
1842 st->print_cr("%s", buf);
1843 }
1844
1845 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
1846 Handle mirror = method->method_holder()->java_mirror();
1847 int method_id = method->orig_method_idnum();
1848 int version = method->constants()->version();
1849 int cpref = method->name_index();
1850 print_stack_element_to_stream(st, mirror, method_id, version, bci, cpref);
1851 }
1852
1853 /**
1854 * Print the throwable message and its stack trace plus all causes by walking the
1855 * cause chain. The output looks the same as of Throwable.printStackTrace().
1856 */
1857 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
1858 // First, print the message.
1859 print(throwable, st);
1860 st->cr();
1861
1862 // Now print the stack trace.
1863 Thread* THREAD = Thread::current();
1864 while (throwable.not_null()) {
1865 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
1866 if (result.is_null()) {
1867 st->print_raw_cr("\t<<no stack trace available>>");
1868 return;
1869 }
1870 BacktraceIterator iter(result, THREAD);
1871
1872 while (iter.repeat()) {
1873 BacktraceElement bte = iter.next(THREAD);
1874 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._cpref);
1875 }
1876 {
1877 // Call getCause() which doesn't necessarily return the _cause field.
1878 EXCEPTION_MARK;
1879 JavaValue cause(T_OBJECT);
1880 JavaCalls::call_virtual(&cause,
1881 throwable,
1882 KlassHandle(THREAD, throwable->klass()),
1883 vmSymbols::getCause_name(),
1884 vmSymbols::void_throwable_signature(),
1885 THREAD);
1886 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1887 if (HAS_PENDING_EXCEPTION) {
1888 CLEAR_PENDING_EXCEPTION;
1889 throwable = Handle();
1890 } else {
1891 throwable = Handle(THREAD, (oop) cause.get_jobject());
1892 if (throwable.not_null()) {
1893 st->print("Caused by: ");
1894 print(throwable, st);
1895 st->cr();
1896 }
1897 }
1898 }
1899 }
1900 }
1901
1902 /**
1903 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
1904 */
1905 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
1906 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
1907 JavaValue result(T_VOID);
1908 JavaCalls::call_virtual(&result,
1909 throwable,
1910 KlassHandle(THREAD, SystemDictionary::Throwable_klass()),
1911 vmSymbols::printStackTrace_name(),
1912 vmSymbols::void_method_signature(),
1913 THREAD);
1914 }
1915
1916 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
1917 if (!StackTraceInThrowable) return;
1918 ResourceMark rm(THREAD);
1919
1920 // Start out by clearing the backtrace for this object, in case the VM
1921 // runs out of memory while allocating the stack trace
1922 set_backtrace(throwable(), NULL);
1923 // Clear lazily constructed Java level stacktrace if refilling occurs
1924 // This is unnecessary in 1.7+ but harmless
1925 clear_stacktrace(throwable());
1926
1927 int max_depth = MaxJavaStackTraceDepth;
1928 JavaThread* thread = (JavaThread*)THREAD;
1929
1930 BacktraceBuilder bt(CHECK);
1931
1932 // If there is no Java frame just return the method that was being called
1933 // with bci 0
1934 if (!thread->has_last_Java_frame()) {
1935 if (max_depth >= 1 && method() != NULL) {
1936 bt.push(method(), 0, CHECK);
1937 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
1938 set_depth(throwable(), 1);
1939 set_backtrace(throwable(), bt.backtrace());
1940 }
1941 return;
1942 }
1943
1944 // Instead of using vframe directly, this version of fill_in_stack_trace
1945 // basically handles everything by hand. This significantly improved the
1946 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
1947 // See bug 6333838 for more details.
1948 // The "ASSERT" here is to verify this method generates the exactly same stack
1949 // trace as utilizing vframe.
1950 #ifdef ASSERT
1951 vframeStream st(thread);
1952 methodHandle st_method(THREAD, st.method());
1953 #endif
1954 int total_count = 0;
1955 RegisterMap map(thread, false);
1956 int decode_offset = 0;
1957 CompiledMethod* nm = NULL;
1958 bool skip_fillInStackTrace_check = false;
1959 bool skip_throwableInit_check = false;
1960 bool skip_hidden = !ShowHiddenFrames;
1961
1962 for (frame fr = thread->last_frame(); max_depth != total_count;) {
1963 Method* method = NULL;
1964 int bci = 0;
1965
1966 // Compiled java method case.
1967 if (decode_offset != 0) {
1968 DebugInfoReadStream stream(nm, decode_offset);
1969 decode_offset = stream.read_int();
1970 method = (Method*)nm->metadata_at(stream.read_int());
1971 bci = stream.read_bci();
1972 } else {
1973 if (fr.is_first_frame()) break;
1974 address pc = fr.pc();
1975 if (fr.is_interpreted_frame()) {
1976 address bcp = fr.interpreter_frame_bcp();
1977 method = fr.interpreter_frame_method();
1978 bci = method->bci_from(bcp);
1979 fr = fr.sender(&map);
1980 } else {
1981 CodeBlob* cb = fr.cb();
1982 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
1983 // but non nmethod
1984 fr = fr.sender(&map);
1985 if (cb == NULL || !cb->is_compiled()) {
1986 continue;
1987 }
1988 nm = cb->as_compiled_method();
1989 if (nm->method()->is_native()) {
1990 method = nm->method();
1991 bci = 0;
1992 } else {
1993 PcDesc* pd = nm->pc_desc_at(pc);
1994 decode_offset = pd->scope_decode_offset();
1995 // if decode_offset is not equal to 0, it will execute the
1996 // "compiled java method case" at the beginning of the loop.
1997 continue;
1998 }
1999 }
2000 }
2001 #ifdef ASSERT
2002 assert(st_method() == method && st.bci() == bci,
2003 "Wrong stack trace");
2004 st.next();
2005 // vframeStream::method isn't GC-safe so store off a copy
2006 // of the Method* in case we GC.
2007 if (!st.at_end()) {
2008 st_method = st.method();
2009 }
2010 #endif
2011
2012 // the format of the stacktrace will be:
2013 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2014 // - 0 or more <init> methods for the exception class (skipped)
2015 // - rest of the stack
2016
2017 if (!skip_fillInStackTrace_check) {
2018 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2019 throwable->is_a(method->method_holder())) {
2020 continue;
2021 }
2022 else {
2023 skip_fillInStackTrace_check = true; // gone past them all
2024 }
2025 }
2026 if (!skip_throwableInit_check) {
2027 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2028
2029 // skip <init> methods of the exception class and superclasses
2030 // This is simlar to classic VM.
2031 if (method->name() == vmSymbols::object_initializer_name() &&
2032 throwable->is_a(method->method_holder())) {
2033 continue;
2034 } else {
2035 // there are none or we've seen them all - either way stop checking
2036 skip_throwableInit_check = true;
2037 }
2038 }
2039 if (method->is_hidden()) {
2040 if (skip_hidden) continue;
2041 }
2042 bt.push(method, bci, CHECK);
2043 total_count++;
2044 }
2045
2046 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2047
2048 // Put completed stack trace into throwable object
2049 set_backtrace(throwable(), bt.backtrace());
2050 set_depth(throwable(), total_count);
2051 }
2052
2053 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2054 // No-op if stack trace is disabled
2055 if (!StackTraceInThrowable) {
2056 return;
2057 }
2058
2059 // Disable stack traces for some preallocated out of memory errors
2060 if (!Universe::should_fill_in_stack_trace(throwable)) {
2061 return;
2062 }
2063
2064 PRESERVE_EXCEPTION_MARK;
2065
2066 JavaThread* thread = JavaThread::active();
2067 fill_in_stack_trace(throwable, method, thread);
2068 // ignore exceptions thrown during stack trace filling
2069 CLEAR_PENDING_EXCEPTION;
2070 }
2071
2072 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2073 // Allocate stack trace - backtrace is created but not filled in
2074
2075 // No-op if stack trace is disabled
2076 if (!StackTraceInThrowable) return;
2077 BacktraceBuilder bt(CHECK); // creates a backtrace
2078 set_backtrace(throwable(), bt.backtrace());
2079 }
2080
2081
2082 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2083 // Fill in stack trace into preallocated backtrace (no GC)
2084
2085 // No-op if stack trace is disabled
2086 if (!StackTraceInThrowable) return;
2087
2088 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2089
2090 JavaThread* THREAD = JavaThread::current();
2091
2092 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2093 assert(backtrace.not_null(), "backtrace should have been preallocated");
2094
2095 ResourceMark rm(THREAD);
2096 vframeStream st(THREAD);
2097
2098 BacktraceBuilder bt(backtrace);
2099
2100 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2101 // methods as preallocated errors aren't created by "java" code.
2102
2103 // fill in as much stack trace as possible
2104 int chunk_count = 0;
2105 for (;!st.at_end(); st.next()) {
2106 bt.push(st.method(), st.bci(), CHECK);
2107 chunk_count++;
2108
2109 // Bail-out for deep stacks
2110 if (chunk_count >= trace_chunk_size) break;
2111 }
2112 set_depth(throwable(), chunk_count);
2113 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2114
2115 // We support the Throwable immutability protocol defined for Java 7.
2116 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2117 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2118 }
2119
2120 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2121 objArrayHandle stack_trace_array_h, TRAPS) {
2122
2123 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2124 THROW(vmSymbols::java_lang_NullPointerException());
2125 }
2126
2127 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2128
2129 if (stack_trace_array_h->length() != depth(throwable())) {
2130 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2131 }
2132
2133 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2134 BacktraceIterator iter(result, THREAD);
2135
2136 int index = 0;
2137 while (iter.repeat()) {
2138 BacktraceElement bte = iter.next(THREAD);
2139
2140 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2141
2142 if (stack_trace_element.is_null()) {
2143 THROW(vmSymbols::java_lang_NullPointerException());
2144 }
2145
2146 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2147 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2148
2149 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2150 method,
2151 bte._version,
2152 bte._bci,
2153 bte._cpref, CHECK);
2154 }
2155 }
2156
2157 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2158 // Allocate java.lang.StackTraceElement instance
2159 Klass* k = SystemDictionary::StackTraceElement_klass();
2160 assert(k != NULL, "must be loaded in 1.4+");
2161 instanceKlassHandle ik (THREAD, k);
2162 if (ik->should_be_initialized()) {
2163 ik->initialize(CHECK_0);
2164 }
2165
2166 Handle element = ik->allocate_instance_handle(CHECK_0);
2167
2168 int cpref = method->name_index();
2169 int version = method->constants()->version();
2170 fill_in(element, method->method_holder(), method, version, bci, cpref, CHECK_0);
2171 return element();
2172 }
2173
2174 void java_lang_StackTraceElement::fill_in(Handle element,
2175 InstanceKlass* holder, const methodHandle& method,
2176 int version, int bci, int cpref, TRAPS) {
2177 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2178
2179 // Fill in class name
2180 ResourceMark rm(THREAD);
2181 const char* str = holder->external_name();
2182 oop classname = StringTable::intern((char*) str, CHECK);
2183 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2184 java_lang_StackTraceElement::set_declaringClassObject(element(), holder->java_mirror());
2185
2186 oop loader = holder->class_loader();
2187 if (loader != NULL) {
2188 oop loader_name = java_lang_ClassLoader::name(loader);
2189 if (loader_name != NULL)
2190 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2191 }
2192
2193 // The method can be NULL if the requested class version is gone
2194 Symbol* sym = !method.is_null() ? method->name() : holder->constants()->symbol_at(cpref);
2195
2196 // Fill in method name
2197 oop methodname = StringTable::intern(sym, CHECK);
2198 java_lang_StackTraceElement::set_methodName(element(), methodname);
2199
2200 // Fill in module name and version
2201 ModuleEntry* module = holder->module();
2202 if (module->is_named()) {
2203 oop module_name = StringTable::intern(module->name(), CHECK);
2204 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2205 oop module_version;
2206 if (module->version() != NULL) {
2207 module_version = StringTable::intern(module->version(), CHECK);
2208 } else {
2209 module_version = NULL;
2210 }
2211 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2212 }
2213
2214 if (!version_matches(method(), version)) {
2215 // The method was redefined, accurate line number information isn't available
2216 java_lang_StackTraceElement::set_fileName(element(), NULL);
2217 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2218 } else {
2219 // Fill in source file name and line number.
2220 Symbol* source = Backtrace::get_source_file_name(holder, version);
2221 if (ShowHiddenFrames && source == NULL)
2222 source = vmSymbols::unknown_class_name();
2223 oop filename = StringTable::intern(source, CHECK);
2224 java_lang_StackTraceElement::set_fileName(element(), filename);
2225
2226 int line_number = Backtrace::get_line_number(method, bci);
2227 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2228 }
2229 }
2230
2231 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2232 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2233 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2234 // we should expand MemberName::name when Throwable uses StackTrace
2235 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2236 return method;
2237 }
2238
2239 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci) {
2240 // set Method* or mid/cpref
2241 oop mname = stackFrame->obj_field(_memberName_offset);
2242 InstanceKlass* ik = method->method_holder();
2243 CallInfo info(method(), ik);
2244 MethodHandles::init_method_MemberName(mname, info);
2245 // set bci
2246 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2247 // method may be redefined; store the version
2248 int version = method->constants()->version();
2249 assert((jushort)version == version, "version should be short");
2250 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2251 }
2252
2253 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2254 ResourceMark rm(THREAD);
2255 Handle k (THREAD, stackFrame->obj_field(_declaringClass_offset));
2256 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(k()));
2257 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2258
2259 short version = stackFrame->short_field(_version_offset);
2260 short bci = stackFrame->short_field(_bci_offset);
2261 int cpref = method->name_index();
2262 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, cpref, CHECK);
2263 }
2264
2265 void java_lang_StackFrameInfo::compute_offsets() {
2266 Klass* k = SystemDictionary::StackFrameInfo_klass();
2267 compute_offset(_declaringClass_offset, k, vmSymbols::declaringClass_name(), vmSymbols::class_signature());
2268 compute_offset(_memberName_offset, k, vmSymbols::memberName_name(), vmSymbols::object_signature());
2269 compute_offset(_bci_offset, k, vmSymbols::bci_name(), vmSymbols::short_signature());
2270 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2271 }
2272
2273 void java_lang_LiveStackFrameInfo::compute_offsets() {
2274 Klass* k = SystemDictionary::LiveStackFrameInfo_klass();
2275 compute_offset(_monitors_offset, k, vmSymbols::monitors_name(), vmSymbols::object_array_signature());
2276 compute_offset(_locals_offset, k, vmSymbols::locals_name(), vmSymbols::object_array_signature());
2277 compute_offset(_operands_offset, k, vmSymbols::operands_name(), vmSymbols::object_array_signature());
2278 compute_offset(_mode_offset, k, vmSymbols::mode_name(), vmSymbols::int_signature());
2279 }
2280
2281 void java_lang_reflect_AccessibleObject::compute_offsets() {
2282 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
2283 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
2284 }
2285
2286 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2287 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2288 return (jboolean) reflect->bool_field(override_offset);
2289 }
2290
2291 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2292 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2293 reflect->bool_field_put(override_offset, (int) value);
2294 }
2295
2296 void java_lang_reflect_Method::compute_offsets() {
2297 Klass* k = SystemDictionary::reflect_Method_klass();
2298 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2299 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2300 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature());
2301 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2302 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2303 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2304 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2305 // The generic signature and annotations fields are only present in 1.5
2306 signature_offset = -1;
2307 annotations_offset = -1;
2308 parameter_annotations_offset = -1;
2309 annotation_default_offset = -1;
2310 type_annotations_offset = -1;
2311 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2312 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2313 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2314 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature());
2315 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2316 }
2317
2318 Handle java_lang_reflect_Method::create(TRAPS) {
2319 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2320 Klass* klass = SystemDictionary::reflect_Method_klass();
2321 // This class is eagerly initialized during VM initialization, since we keep a refence
2322 // to one of the methods
2323 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2324 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2325 }
2326
2327 oop java_lang_reflect_Method::clazz(oop reflect) {
2328 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2329 return reflect->obj_field(clazz_offset);
2330 }
2331
2332 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2333 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2334 reflect->obj_field_put(clazz_offset, value);
2335 }
2336
2337 int java_lang_reflect_Method::slot(oop reflect) {
2338 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2339 return reflect->int_field(slot_offset);
2340 }
2341
2342 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2343 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2344 reflect->int_field_put(slot_offset, value);
2345 }
2346
2347 oop java_lang_reflect_Method::name(oop method) {
2348 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2349 return method->obj_field(name_offset);
2350 }
2351
2352 void java_lang_reflect_Method::set_name(oop method, oop value) {
2353 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2354 method->obj_field_put(name_offset, value);
2355 }
2356
2357 oop java_lang_reflect_Method::return_type(oop method) {
2358 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2359 return method->obj_field(returnType_offset);
2360 }
2361
2362 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2363 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2364 method->obj_field_put(returnType_offset, value);
2365 }
2366
2367 oop java_lang_reflect_Method::parameter_types(oop method) {
2368 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2369 return method->obj_field(parameterTypes_offset);
2370 }
2371
2372 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2373 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2374 method->obj_field_put(parameterTypes_offset, value);
2375 }
2376
2377 oop java_lang_reflect_Method::exception_types(oop method) {
2378 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2379 return method->obj_field(exceptionTypes_offset);
2380 }
2381
2382 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2383 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2384 method->obj_field_put(exceptionTypes_offset, value);
2385 }
2386
2387 int java_lang_reflect_Method::modifiers(oop method) {
2388 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2389 return method->int_field(modifiers_offset);
2390 }
2391
2392 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2393 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2394 method->int_field_put(modifiers_offset, value);
2395 }
2396
2397 bool java_lang_reflect_Method::has_signature_field() {
2398 return (signature_offset >= 0);
2399 }
2400
2401 oop java_lang_reflect_Method::signature(oop method) {
2402 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2403 assert(has_signature_field(), "signature field must be present");
2404 return method->obj_field(signature_offset);
2405 }
2406
2407 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2408 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2409 assert(has_signature_field(), "signature field must be present");
2410 method->obj_field_put(signature_offset, value);
2411 }
2412
2413 bool java_lang_reflect_Method::has_annotations_field() {
2414 return (annotations_offset >= 0);
2415 }
2416
2417 oop java_lang_reflect_Method::annotations(oop method) {
2418 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2419 assert(has_annotations_field(), "annotations field must be present");
2420 return method->obj_field(annotations_offset);
2421 }
2422
2423 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2424 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2425 assert(has_annotations_field(), "annotations field must be present");
2426 method->obj_field_put(annotations_offset, value);
2427 }
2428
2429 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2430 return (parameter_annotations_offset >= 0);
2431 }
2432
2433 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2434 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2435 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2436 return method->obj_field(parameter_annotations_offset);
2437 }
2438
2439 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2440 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2441 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2442 method->obj_field_put(parameter_annotations_offset, value);
2443 }
2444
2445 bool java_lang_reflect_Method::has_annotation_default_field() {
2446 return (annotation_default_offset >= 0);
2447 }
2448
2449 oop java_lang_reflect_Method::annotation_default(oop method) {
2450 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2451 assert(has_annotation_default_field(), "annotation default field must be present");
2452 return method->obj_field(annotation_default_offset);
2453 }
2454
2455 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2456 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2457 assert(has_annotation_default_field(), "annotation default field must be present");
2458 method->obj_field_put(annotation_default_offset, value);
2459 }
2460
2461 bool java_lang_reflect_Method::has_type_annotations_field() {
2462 return (type_annotations_offset >= 0);
2463 }
2464
2465 oop java_lang_reflect_Method::type_annotations(oop method) {
2466 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2467 assert(has_type_annotations_field(), "type_annotations field must be present");
2468 return method->obj_field(type_annotations_offset);
2469 }
2470
2471 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2472 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2473 assert(has_type_annotations_field(), "type_annotations field must be present");
2474 method->obj_field_put(type_annotations_offset, value);
2475 }
2476
2477 void java_lang_reflect_Constructor::compute_offsets() {
2478 Klass* k = SystemDictionary::reflect_Constructor_klass();
2479 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2480 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature());
2481 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature());
2482 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2483 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2484 // The generic signature and annotations fields are only present in 1.5
2485 signature_offset = -1;
2486 annotations_offset = -1;
2487 parameter_annotations_offset = -1;
2488 type_annotations_offset = -1;
2489 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2490 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2491 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature());
2492 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2493 }
2494
2495 Handle java_lang_reflect_Constructor::create(TRAPS) {
2496 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2497 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2498 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2499 instanceKlassHandle klass (THREAD, k);
2500 // Ensure it is initialized
2501 klass->initialize(CHECK_NH);
2502 return klass->allocate_instance_handle(THREAD);
2503 }
2504
2505 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2506 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2507 return reflect->obj_field(clazz_offset);
2508 }
2509
2510 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2511 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2512 reflect->obj_field_put(clazz_offset, value);
2513 }
2514
2515 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2516 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2517 return constructor->obj_field(parameterTypes_offset);
2518 }
2519
2520 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2521 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2522 constructor->obj_field_put(parameterTypes_offset, value);
2523 }
2524
2525 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2526 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2527 return constructor->obj_field(exceptionTypes_offset);
2528 }
2529
2530 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2531 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2532 constructor->obj_field_put(exceptionTypes_offset, value);
2533 }
2534
2535 int java_lang_reflect_Constructor::slot(oop reflect) {
2536 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2537 return reflect->int_field(slot_offset);
2538 }
2539
2540 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2541 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2542 reflect->int_field_put(slot_offset, value);
2543 }
2544
2545 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2546 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2547 return constructor->int_field(modifiers_offset);
2548 }
2549
2550 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2551 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2552 constructor->int_field_put(modifiers_offset, value);
2553 }
2554
2555 bool java_lang_reflect_Constructor::has_signature_field() {
2556 return (signature_offset >= 0);
2557 }
2558
2559 oop java_lang_reflect_Constructor::signature(oop constructor) {
2560 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2561 assert(has_signature_field(), "signature field must be present");
2562 return constructor->obj_field(signature_offset);
2563 }
2564
2565 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2566 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2567 assert(has_signature_field(), "signature field must be present");
2568 constructor->obj_field_put(signature_offset, value);
2569 }
2570
2571 bool java_lang_reflect_Constructor::has_annotations_field() {
2572 return (annotations_offset >= 0);
2573 }
2574
2575 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2576 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2577 assert(has_annotations_field(), "annotations field must be present");
2578 return constructor->obj_field(annotations_offset);
2579 }
2580
2581 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2582 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2583 assert(has_annotations_field(), "annotations field must be present");
2584 constructor->obj_field_put(annotations_offset, value);
2585 }
2586
2587 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
2588 return (parameter_annotations_offset >= 0);
2589 }
2590
2591 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
2592 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2593 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2594 return method->obj_field(parameter_annotations_offset);
2595 }
2596
2597 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2598 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2599 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2600 method->obj_field_put(parameter_annotations_offset, value);
2601 }
2602
2603 bool java_lang_reflect_Constructor::has_type_annotations_field() {
2604 return (type_annotations_offset >= 0);
2605 }
2606
2607 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
2608 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2609 assert(has_type_annotations_field(), "type_annotations field must be present");
2610 return constructor->obj_field(type_annotations_offset);
2611 }
2612
2613 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
2614 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2615 assert(has_type_annotations_field(), "type_annotations field must be present");
2616 constructor->obj_field_put(type_annotations_offset, value);
2617 }
2618
2619 void java_lang_reflect_Field::compute_offsets() {
2620 Klass* k = SystemDictionary::reflect_Field_klass();
2621 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
2622 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2623 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature());
2624 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature());
2625 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2626 // The generic signature and annotations fields are only present in 1.5
2627 signature_offset = -1;
2628 annotations_offset = -1;
2629 type_annotations_offset = -1;
2630 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature());
2631 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature());
2632 compute_optional_offset(type_annotations_offset, k, vmSymbols::type_annotations_name(), vmSymbols::byte_array_signature());
2633 }
2634
2635 Handle java_lang_reflect_Field::create(TRAPS) {
2636 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2637 Symbol* name = vmSymbols::java_lang_reflect_Field();
2638 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2639 instanceKlassHandle klass (THREAD, k);
2640 // Ensure it is initialized
2641 klass->initialize(CHECK_NH);
2642 return klass->allocate_instance_handle(THREAD);
2643 }
2644
2645 oop java_lang_reflect_Field::clazz(oop reflect) {
2646 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2647 return reflect->obj_field(clazz_offset);
2648 }
2649
2650 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2651 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2652 reflect->obj_field_put(clazz_offset, value);
2653 }
2654
2655 oop java_lang_reflect_Field::name(oop field) {
2656 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2657 return field->obj_field(name_offset);
2658 }
2659
2660 void java_lang_reflect_Field::set_name(oop field, oop value) {
2661 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2662 field->obj_field_put(name_offset, value);
2663 }
2664
2665 oop java_lang_reflect_Field::type(oop field) {
2666 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2667 return field->obj_field(type_offset);
2668 }
2669
2670 void java_lang_reflect_Field::set_type(oop field, oop value) {
2671 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2672 field->obj_field_put(type_offset, value);
2673 }
2674
2675 int java_lang_reflect_Field::slot(oop reflect) {
2676 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2677 return reflect->int_field(slot_offset);
2678 }
2679
2680 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
2681 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2682 reflect->int_field_put(slot_offset, value);
2683 }
2684
2685 int java_lang_reflect_Field::modifiers(oop field) {
2686 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2687 return field->int_field(modifiers_offset);
2688 }
2689
2690 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
2691 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2692 field->int_field_put(modifiers_offset, value);
2693 }
2694
2695 bool java_lang_reflect_Field::has_signature_field() {
2696 return (signature_offset >= 0);
2697 }
2698
2699 oop java_lang_reflect_Field::signature(oop field) {
2700 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2701 assert(has_signature_field(), "signature field must be present");
2702 return field->obj_field(signature_offset);
2703 }
2704
2705 void java_lang_reflect_Field::set_signature(oop field, oop value) {
2706 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2707 assert(has_signature_field(), "signature field must be present");
2708 field->obj_field_put(signature_offset, value);
2709 }
2710
2711 bool java_lang_reflect_Field::has_annotations_field() {
2712 return (annotations_offset >= 0);
2713 }
2714
2715 oop java_lang_reflect_Field::annotations(oop field) {
2716 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2717 assert(has_annotations_field(), "annotations field must be present");
2718 return field->obj_field(annotations_offset);
2719 }
2720
2721 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
2722 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2723 assert(has_annotations_field(), "annotations field must be present");
2724 field->obj_field_put(annotations_offset, value);
2725 }
2726
2727 bool java_lang_reflect_Field::has_type_annotations_field() {
2728 return (type_annotations_offset >= 0);
2729 }
2730
2731 oop java_lang_reflect_Field::type_annotations(oop field) {
2732 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2733 assert(has_type_annotations_field(), "type_annotations field must be present");
2734 return field->obj_field(type_annotations_offset);
2735 }
2736
2737 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
2738 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2739 assert(has_type_annotations_field(), "type_annotations field must be present");
2740 field->obj_field_put(type_annotations_offset, value);
2741 }
2742
2743 void reflect_ConstantPool::compute_offsets() {
2744 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2745 // This null test can be removed post beta
2746 if (k != NULL) {
2747 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
2748 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature());
2749 }
2750 }
2751
2752 void java_lang_reflect_Parameter::compute_offsets() {
2753 Klass* k = SystemDictionary::reflect_Parameter_klass();
2754 if(NULL != k) {
2755 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2756 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature());
2757 compute_offset(index_offset, k, vmSymbols::index_name(), vmSymbols::int_signature());
2758 compute_offset(executable_offset, k, vmSymbols::executable_name(), vmSymbols::executable_signature());
2759 }
2760 }
2761
2762 Handle java_lang_reflect_Parameter::create(TRAPS) {
2763 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2764 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
2765 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2766 instanceKlassHandle klass (THREAD, k);
2767 // Ensure it is initialized
2768 klass->initialize(CHECK_NH);
2769 return klass->allocate_instance_handle(THREAD);
2770 }
2771
2772 oop java_lang_reflect_Parameter::name(oop param) {
2773 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2774 return param->obj_field(name_offset);
2775 }
2776
2777 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
2778 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2779 param->obj_field_put(name_offset, value);
2780 }
2781
2782 int java_lang_reflect_Parameter::modifiers(oop param) {
2783 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2784 return param->int_field(modifiers_offset);
2785 }
2786
2787 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
2788 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2789 param->int_field_put(modifiers_offset, value);
2790 }
2791
2792 int java_lang_reflect_Parameter::index(oop param) {
2793 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2794 return param->int_field(index_offset);
2795 }
2796
2797 void java_lang_reflect_Parameter::set_index(oop param, int value) {
2798 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2799 param->int_field_put(index_offset, value);
2800 }
2801
2802 oop java_lang_reflect_Parameter::executable(oop param) {
2803 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2804 return param->obj_field(executable_offset);
2805 }
2806
2807 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
2808 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2809 param->obj_field_put(executable_offset, value);
2810 }
2811
2812
2813 int java_lang_reflect_Module::loader_offset;
2814 int java_lang_reflect_Module::name_offset;
2815 int java_lang_reflect_Module::_module_entry_offset = -1;
2816
2817 Handle java_lang_reflect_Module::create(Handle loader, Handle module_name, TRAPS) {
2818 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2819
2820 Symbol* name = vmSymbols::java_lang_reflect_Module();
2821 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2822 instanceKlassHandle klass (THREAD, k);
2823
2824 Handle jlrmh = klass->allocate_instance_handle(CHECK_NH);
2825 JavaValue result(T_VOID);
2826 JavaCalls::call_special(&result, jlrmh, KlassHandle(THREAD, klass()),
2827 vmSymbols::object_initializer_name(),
2828 vmSymbols::java_lang_reflect_module_init_signature(),
2829 loader, module_name, CHECK_NH);
2830 return jlrmh;
2831 }
2832
2833 void java_lang_reflect_Module::compute_offsets() {
2834 Klass* k = SystemDictionary::reflect_Module_klass();
2835 if(NULL != k) {
2836 compute_offset(loader_offset, k, vmSymbols::loader_name(), vmSymbols::classloader_signature());
2837 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature());
2838 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2839 }
2840 }
2841
2842
2843 oop java_lang_reflect_Module::loader(oop module) {
2844 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2845 return module->obj_field(loader_offset);
2846 }
2847
2848 void java_lang_reflect_Module::set_loader(oop module, oop value) {
2849 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2850 module->obj_field_put(loader_offset, value);
2851 }
2852
2853 oop java_lang_reflect_Module::name(oop module) {
2854 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2855 return module->obj_field(name_offset);
2856 }
2857
2858 void java_lang_reflect_Module::set_name(oop module, oop value) {
2859 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2860 module->obj_field_put(name_offset, value);
2861 }
2862
2863 ModuleEntry* java_lang_reflect_Module::module_entry(oop module, TRAPS) {
2864 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
2865 assert(module != NULL, "module can't be null");
2866 assert(module->is_oop(), "module must be oop");
2867
2868 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
2869 if (module_entry == NULL) {
2870 // If the inject field containing the ModuleEntry* is null then return the
2871 // class loader's unnamed module.
2872 oop loader = java_lang_reflect_Module::loader(module);
2873 Handle h_loader = Handle(THREAD, loader);
2874 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader, CHECK_NULL);
2875 return loader_cld->modules()->unnamed_module();
2876 }
2877 return module_entry;
2878 }
2879
2880 void java_lang_reflect_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
2881 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
2882 assert(module != NULL, "module can't be null");
2883 assert(module->is_oop(), "module must be oop");
2884 module->address_field_put(_module_entry_offset, (address)module_entry);
2885 }
2886
2887 Handle reflect_ConstantPool::create(TRAPS) {
2888 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2889 Klass* k = SystemDictionary::reflect_ConstantPool_klass();
2890 instanceKlassHandle klass (THREAD, k);
2891 // Ensure it is initialized
2892 klass->initialize(CHECK_NH);
2893 return klass->allocate_instance_handle(THREAD);
2894 }
2895
2896
2897 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
2898 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2899 oop mirror = value->pool_holder()->java_mirror();
2900 // Save the mirror to get back the constant pool.
2901 reflect->obj_field_put(_oop_offset, mirror);
2902 }
2903
2904 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
2905 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2906
2907 oop mirror = reflect->obj_field(_oop_offset);
2908 Klass* k = java_lang_Class::as_Klass(mirror);
2909 assert(k->is_instance_klass(), "Must be");
2910
2911 // Get the constant pool back from the klass. Since class redefinition
2912 // merges the new constant pool into the old, this is essentially the
2913 // same constant pool as the original. If constant pool merging is
2914 // no longer done in the future, this will have to change to save
2915 // the original.
2916 return InstanceKlass::cast(k)->constants();
2917 }
2918
2919 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
2920 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
2921 // This null test can be removed post beta
2922 if (k != NULL) {
2923 compute_offset(_base_offset, k,
2924 vmSymbols::base_name(), vmSymbols::object_signature());
2925 }
2926 }
2927
2928 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
2929 Klass* k = SystemDictionary::box_klass(type);
2930 if (k == NULL) return NULL;
2931 instanceKlassHandle h (THREAD, k);
2932 if (!h->is_initialized()) h->initialize(CHECK_0);
2933 return h->allocate_instance(THREAD);
2934 }
2935
2936
2937 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
2938 oop box = initialize_and_allocate(type, CHECK_0);
2939 if (box == NULL) return NULL;
2940 switch (type) {
2941 case T_BOOLEAN:
2942 box->bool_field_put(value_offset, value->z);
2943 break;
2944 case T_CHAR:
2945 box->char_field_put(value_offset, value->c);
2946 break;
2947 case T_FLOAT:
2948 box->float_field_put(value_offset, value->f);
2949 break;
2950 case T_DOUBLE:
2951 box->double_field_put(long_value_offset, value->d);
2952 break;
2953 case T_BYTE:
2954 box->byte_field_put(value_offset, value->b);
2955 break;
2956 case T_SHORT:
2957 box->short_field_put(value_offset, value->s);
2958 break;
2959 case T_INT:
2960 box->int_field_put(value_offset, value->i);
2961 break;
2962 case T_LONG:
2963 box->long_field_put(long_value_offset, value->j);
2964 break;
2965 default:
2966 return NULL;
2967 }
2968 return box;
2969 }
2970
2971
2972 BasicType java_lang_boxing_object::basic_type(oop box) {
2973 if (box == NULL) return T_ILLEGAL;
2974 BasicType type = SystemDictionary::box_klass_type(box->klass());
2975 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
2976 return T_ILLEGAL;
2977 return type;
2978 }
2979
2980
2981 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
2982 BasicType type = SystemDictionary::box_klass_type(box->klass());
2983 switch (type) {
2984 case T_BOOLEAN:
2985 value->z = box->bool_field(value_offset);
2986 break;
2987 case T_CHAR:
2988 value->c = box->char_field(value_offset);
2989 break;
2990 case T_FLOAT:
2991 value->f = box->float_field(value_offset);
2992 break;
2993 case T_DOUBLE:
2994 value->d = box->double_field(long_value_offset);
2995 break;
2996 case T_BYTE:
2997 value->b = box->byte_field(value_offset);
2998 break;
2999 case T_SHORT:
3000 value->s = box->short_field(value_offset);
3001 break;
3002 case T_INT:
3003 value->i = box->int_field(value_offset);
3004 break;
3005 case T_LONG:
3006 value->j = box->long_field(long_value_offset);
3007 break;
3008 default:
3009 return T_ILLEGAL;
3010 } // end switch
3011 return type;
3012 }
3013
3014
3015 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3016 BasicType type = SystemDictionary::box_klass_type(box->klass());
3017 switch (type) {
3018 case T_BOOLEAN:
3019 box->bool_field_put(value_offset, value->z);
3020 break;
3021 case T_CHAR:
3022 box->char_field_put(value_offset, value->c);
3023 break;
3024 case T_FLOAT:
3025 box->float_field_put(value_offset, value->f);
3026 break;
3027 case T_DOUBLE:
3028 box->double_field_put(long_value_offset, value->d);
3029 break;
3030 case T_BYTE:
3031 box->byte_field_put(value_offset, value->b);
3032 break;
3033 case T_SHORT:
3034 box->short_field_put(value_offset, value->s);
3035 break;
3036 case T_INT:
3037 box->int_field_put(value_offset, value->i);
3038 break;
3039 case T_LONG:
3040 box->long_field_put(long_value_offset, value->j);
3041 break;
3042 default:
3043 return T_ILLEGAL;
3044 } // end switch
3045 return type;
3046 }
3047
3048
3049 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3050 switch (type) {
3051 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3052 case T_CHAR: st->print("%d", value->c); break;
3053 case T_BYTE: st->print("%d", value->b); break;
3054 case T_SHORT: st->print("%d", value->s); break;
3055 case T_INT: st->print("%d", value->i); break;
3056 case T_LONG: st->print(INT64_FORMAT, value->j); break;
3057 case T_FLOAT: st->print("%f", value->f); break;
3058 case T_DOUBLE: st->print("%lf", value->d); break;
3059 default: st->print("type %d?", type); break;
3060 }
3061 }
3062
3063 // Support for java_lang_ref_SoftReference
3064
3065 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3066 return ref->long_field(timestamp_offset);
3067 }
3068
3069 jlong java_lang_ref_SoftReference::clock() {
3070 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3071 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3072 return *offset;
3073 }
3074
3075 void java_lang_ref_SoftReference::set_clock(jlong value) {
3076 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3077 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset);
3078 *offset = value;
3079 }
3080
3081 // Support for java_lang_invoke_DirectMethodHandle
3082
3083 int java_lang_invoke_DirectMethodHandle::_member_offset;
3084
3085 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3086 oop member_name = NULL;
3087 bool is_dmh = dmh->is_oop() && java_lang_invoke_DirectMethodHandle::is_instance(dmh);
3088 assert(is_dmh, "a DirectMethodHandle oop is expected");
3089 if (is_dmh) {
3090 member_name = dmh->obj_field(member_offset_in_bytes());
3091 }
3092 return member_name;
3093 }
3094
3095 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3096 Klass* klass_oop = SystemDictionary::DirectMethodHandle_klass();
3097 if (klass_oop != NULL) {
3098 compute_offset(_member_offset, klass_oop, vmSymbols::member_name(), vmSymbols::java_lang_invoke_MemberName_signature());
3099 }
3100 }
3101
3102 // Support for java_lang_invoke_MethodHandle
3103
3104 int java_lang_invoke_MethodHandle::_type_offset;
3105 int java_lang_invoke_MethodHandle::_form_offset;
3106
3107 int java_lang_invoke_MemberName::_clazz_offset;
3108 int java_lang_invoke_MemberName::_name_offset;
3109 int java_lang_invoke_MemberName::_type_offset;
3110 int java_lang_invoke_MemberName::_flags_offset;
3111 int java_lang_invoke_MemberName::_vmtarget_offset;
3112 int java_lang_invoke_MemberName::_vmloader_offset;
3113 int java_lang_invoke_MemberName::_vmindex_offset;
3114
3115 int java_lang_invoke_LambdaForm::_vmentry_offset;
3116
3117 void java_lang_invoke_MethodHandle::compute_offsets() {
3118 Klass* klass_oop = SystemDictionary::MethodHandle_klass();
3119 if (klass_oop != NULL) {
3120 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature());
3121 compute_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature());
3122 }
3123 }
3124
3125 void java_lang_invoke_MemberName::compute_offsets() {
3126 Klass* klass_oop = SystemDictionary::MemberName_klass();
3127 if (klass_oop != NULL) {
3128 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature());
3129 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature());
3130 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature());
3131 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature());
3132 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3133 }
3134 }
3135
3136 void java_lang_invoke_LambdaForm::compute_offsets() {
3137 Klass* klass_oop = SystemDictionary::LambdaForm_klass();
3138 if (klass_oop != NULL) {
3139 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature());
3140 }
3141 }
3142
3143 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3144 return obj != NULL && is_subclass(obj->klass());
3145 }
3146
3147
3148 oop java_lang_invoke_MethodHandle::type(oop mh) {
3149 return mh->obj_field(_type_offset);
3150 }
3151
3152 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3153 mh->obj_field_put(_type_offset, mtype);
3154 }
3155
3156 oop java_lang_invoke_MethodHandle::form(oop mh) {
3157 assert(_form_offset != 0, "");
3158 return mh->obj_field(_form_offset);
3159 }
3160
3161 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3162 assert(_form_offset != 0, "");
3163 mh->obj_field_put(_form_offset, lform);
3164 }
3165
3166 /// MemberName accessors
3167
3168 oop java_lang_invoke_MemberName::clazz(oop mname) {
3169 assert(is_instance(mname), "wrong type");
3170 return mname->obj_field(_clazz_offset);
3171 }
3172
3173 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3174 assert(is_instance(mname), "wrong type");
3175 mname->obj_field_put(_clazz_offset, clazz);
3176 }
3177
3178 oop java_lang_invoke_MemberName::name(oop mname) {
3179 assert(is_instance(mname), "wrong type");
3180 return mname->obj_field(_name_offset);
3181 }
3182
3183 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3184 assert(is_instance(mname), "wrong type");
3185 mname->obj_field_put(_name_offset, name);
3186 }
3187
3188 oop java_lang_invoke_MemberName::type(oop mname) {
3189 assert(is_instance(mname), "wrong type");
3190 return mname->obj_field(_type_offset);
3191 }
3192
3193 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3194 assert(is_instance(mname), "wrong type");
3195 mname->obj_field_put(_type_offset, type);
3196 }
3197
3198 int java_lang_invoke_MemberName::flags(oop mname) {
3199 assert(is_instance(mname), "wrong type");
3200 return mname->int_field(_flags_offset);
3201 }
3202
3203 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3204 assert(is_instance(mname), "wrong type");
3205 mname->int_field_put(_flags_offset, flags);
3206 }
3207
3208 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) {
3209 assert(is_instance(mname), "wrong type");
3210 return (Metadata*)mname->address_field(_vmtarget_offset);
3211 }
3212
3213 bool java_lang_invoke_MemberName::is_method(oop mname) {
3214 assert(is_instance(mname), "must be MemberName");
3215 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3216 }
3217
3218 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) {
3219 assert(is_instance(mname), "wrong type");
3220 // check the type of the vmtarget
3221 oop dependency = NULL;
3222 if (ref != NULL) {
3223 switch (flags(mname) & (MN_IS_METHOD |
3224 MN_IS_CONSTRUCTOR |
3225 MN_IS_FIELD)) {
3226 case MN_IS_METHOD:
3227 case MN_IS_CONSTRUCTOR:
3228 assert(ref->is_method(), "should be a method");
3229 dependency = ((Method*)ref)->method_holder()->java_mirror();
3230 break;
3231 case MN_IS_FIELD:
3232 assert(ref->is_klass(), "should be a class");
3233 dependency = ((Klass*)ref)->java_mirror();
3234 break;
3235 default:
3236 ShouldNotReachHere();
3237 }
3238 }
3239 mname->address_field_put(_vmtarget_offset, (address)ref);
3240 // Add a reference to the loader (actually mirror because anonymous classes will not have
3241 // distinct loaders) to ensure the metadata is kept alive
3242 // This mirror may be different than the one in clazz field.
3243 mname->obj_field_put(_vmloader_offset, dependency);
3244 }
3245
3246 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3247 assert(is_instance(mname), "wrong type");
3248 return (intptr_t) mname->address_field(_vmindex_offset);
3249 }
3250
3251 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3252 assert(is_instance(mname), "wrong type");
3253 mname->address_field_put(_vmindex_offset, (address) index);
3254 }
3255
3256 bool java_lang_invoke_MemberName::equals(oop mn1, oop mn2) {
3257 if (mn1 == mn2) {
3258 return true;
3259 }
3260 return (vmtarget(mn1) == vmtarget(mn2) && flags(mn1) == flags(mn2) &&
3261 vmindex(mn1) == vmindex(mn2) &&
3262 clazz(mn1) == clazz(mn2));
3263 }
3264
3265 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3266 assert(is_instance(lform), "wrong type");
3267 return lform->obj_field(_vmentry_offset);
3268 }
3269
3270
3271 // Support for java_lang_invoke_MethodType
3272
3273 int java_lang_invoke_MethodType::_rtype_offset;
3274 int java_lang_invoke_MethodType::_ptypes_offset;
3275
3276 void java_lang_invoke_MethodType::compute_offsets() {
3277 Klass* k = SystemDictionary::MethodType_klass();
3278 if (k != NULL) {
3279 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature());
3280 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature());
3281 }
3282 }
3283
3284 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3285 st->print("(");
3286 objArrayOop pts = ptypes(mt);
3287 for (int i = 0, limit = pts->length(); i < limit; i++) {
3288 java_lang_Class::print_signature(pts->obj_at(i), st);
3289 }
3290 st->print(")");
3291 java_lang_Class::print_signature(rtype(mt), st);
3292 }
3293
3294 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3295 ResourceMark rm;
3296 stringStream buffer(128);
3297 print_signature(mt, &buffer);
3298 const char* sigstr = buffer.base();
3299 int siglen = (int) buffer.size();
3300 Symbol *name;
3301 if (!intern_if_not_found) {
3302 name = SymbolTable::probe(sigstr, siglen);
3303 } else {
3304 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3305 }
3306 return name;
3307 }
3308
3309 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3310 if (mt1 == mt2)
3311 return true;
3312 if (rtype(mt1) != rtype(mt2))
3313 return false;
3314 if (ptype_count(mt1) != ptype_count(mt2))
3315 return false;
3316 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3317 if (ptype(mt1, i) != ptype(mt2, i))
3318 return false;
3319 }
3320 return true;
3321 }
3322
3323 oop java_lang_invoke_MethodType::rtype(oop mt) {
3324 assert(is_instance(mt), "must be a MethodType");
3325 return mt->obj_field(_rtype_offset);
3326 }
3327
3328 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3329 assert(is_instance(mt), "must be a MethodType");
3330 return (objArrayOop) mt->obj_field(_ptypes_offset);
3331 }
3332
3333 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3334 return ptypes(mt)->obj_at(idx);
3335 }
3336
3337 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3338 return ptypes(mt)->length();
3339 }
3340
3341 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3342 objArrayOop pts = ptypes(mt);
3343 int count = pts->length();
3344 int slots = 0;
3345 for (int i = 0; i < count; i++) {
3346 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3347 slots += type2size[bt];
3348 }
3349 return slots;
3350 }
3351
3352 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3353 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3354 return type2size[bt];
3355 }
3356
3357
3358 // Support for java_lang_invoke_CallSite
3359
3360 int java_lang_invoke_CallSite::_target_offset;
3361 int java_lang_invoke_CallSite::_context_offset;
3362
3363 void java_lang_invoke_CallSite::compute_offsets() {
3364 Klass* k = SystemDictionary::CallSite_klass();
3365 if (k != NULL) {
3366 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature());
3367 compute_offset(_context_offset, k, vmSymbols::context_name(),
3368 vmSymbols::java_lang_invoke_MethodHandleNatives_CallSiteContext_signature());
3369 }
3370 }
3371
3372 oop java_lang_invoke_CallSite::context(oop call_site) {
3373 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3374
3375 oop dep_oop = call_site->obj_field(_context_offset);
3376 return dep_oop;
3377 }
3378
3379 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3380
3381 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3382
3383 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3384 Klass* k = SystemDictionary::Context_klass();
3385 if (k != NULL) {
3386 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3387 }
3388 }
3389
3390 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3391 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3392 intptr_t* vmdeps_addr = (intptr_t*)call_site->address_field_addr(_vmdependencies_offset);
3393 DependencyContext dep_ctx(vmdeps_addr);
3394 return dep_ctx;
3395 }
3396
3397 // Support for java_security_AccessControlContext
3398
3399 int java_security_AccessControlContext::_context_offset = 0;
3400 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3401 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3402 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3403
3404 void java_security_AccessControlContext::compute_offsets() {
3405 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3406 fieldDescriptor fd;
3407 InstanceKlass* ik = SystemDictionary::AccessControlContext_klass();
3408
3409 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) {
3410 fatal("Invalid layout of java.security.AccessControlContext");
3411 }
3412 _context_offset = fd.offset();
3413
3414 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) {
3415 fatal("Invalid layout of java.security.AccessControlContext");
3416 }
3417 _privilegedContext_offset = fd.offset();
3418
3419 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) {
3420 fatal("Invalid layout of java.security.AccessControlContext");
3421 }
3422 _isPrivileged_offset = fd.offset();
3423
3424 // The offset may not be present for bootstrapping with older JDK.
3425 if (ik->find_local_field(vmSymbols::isAuthorized_name(), vmSymbols::bool_signature(), &fd)) {
3426 _isAuthorized_offset = fd.offset();
3427 }
3428 }
3429
3430
3431 bool java_security_AccessControlContext::is_authorized(Handle context) {
3432 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3433 assert(_isAuthorized_offset != -1, "should be set");
3434 return context->bool_field(_isAuthorized_offset) != 0;
3435 }
3436
3437 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3438 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3439 // Ensure klass is initialized
3440 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3441 // Allocate result
3442 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3443 // Fill in values
3444 result->obj_field_put(_context_offset, context());
3445 result->obj_field_put(_privilegedContext_offset, privileged_context());
3446 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3447 // whitelist AccessControlContexts created by the JVM if present
3448 if (_isAuthorized_offset != -1) {
3449 result->bool_field_put(_isAuthorized_offset, true);
3450 }
3451 return result;
3452 }
3453
3454
3455 // Support for java_lang_ClassLoader
3456
3457 bool java_lang_ClassLoader::offsets_computed = false;
3458 int java_lang_ClassLoader::_loader_data_offset = -1;
3459 int java_lang_ClassLoader::parallelCapable_offset = -1;
3460 int java_lang_ClassLoader::name_offset = -1;
3461 int java_lang_ClassLoader::unnamedModule_offset = -1;
3462
3463 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) {
3464 assert(loader != NULL && loader->is_oop(), "loader must be oop");
3465 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset);
3466 }
3467
3468 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3469 return *java_lang_ClassLoader::loader_data_addr(loader);
3470 }
3471
3472 void java_lang_ClassLoader::compute_offsets() {
3473 assert(!offsets_computed, "offsets should be initialized only once");
3474 offsets_computed = true;
3475
3476 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7,
3477 Klass* k1 = SystemDictionary::ClassLoader_klass();
3478 compute_optional_offset(parallelCapable_offset,
3479 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature());
3480
3481 compute_offset(name_offset,
3482 k1, vmSymbols::name_name(), vmSymbols::string_signature());
3483
3484 compute_offset(unnamedModule_offset,
3485 k1, vmSymbols::unnamedModule_name(), vmSymbols::module_signature());
3486
3487 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3488 }
3489
3490 oop java_lang_ClassLoader::parent(oop loader) {
3491 assert(is_instance(loader), "loader must be oop");
3492 return loader->obj_field(parent_offset);
3493 }
3494
3495 oop java_lang_ClassLoader::name(oop loader) {
3496 assert(is_instance(loader), "loader must be oop");
3497 return loader->obj_field(name_offset);
3498 }
3499
3500 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
3501 assert(is_instance(loader), "loader must be oop");
3502 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
3503 oop acl = loader;
3504 debug_only(jint loop_count = 0);
3505 // This loop taken verbatim from ClassLoader.java:
3506 do {
3507 acl = parent(acl);
3508 if (cl == acl) {
3509 return true;
3510 }
3511 assert(++loop_count > 0, "loop_count overflow");
3512 } while (acl != NULL);
3513 return false;
3514 }
3515
3516 bool java_lang_ClassLoader::is_instance(oop obj) {
3517 return obj != NULL && is_subclass(obj->klass());
3518 }
3519
3520
3521 // For class loader classes, parallelCapable defined
3522 // based on non-null field
3523 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
3524 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
3525 if (parallelCapable_offset == -1) {
3526 // Default for backward compatibility is false
3527 return false;
3528 }
3529 return (class_loader->obj_field(parallelCapable_offset) != NULL);
3530 }
3531
3532 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
3533 // Fix for 4474172; see evaluation for more details
3534 loader = non_reflection_class_loader(loader);
3535
3536 oop cl = SystemDictionary::java_system_loader();
3537 while(cl != NULL) {
3538 if (cl == loader) return true;
3539 cl = parent(cl);
3540 }
3541 return false;
3542 }
3543
3544 // Return true if this is one of the class loaders associated with
3545 // the generated bytecodes for reflection.
3546 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
3547 if (loader != NULL) {
3548 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
3549 // This might be null in non-1.4 JDKs
3550 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
3551 }
3552 return false;
3553 }
3554
3555 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
3556 // See whether this is one of the class loaders associated with
3557 // the generated bytecodes for reflection, and if so, "magically"
3558 // delegate to its parent to prevent class loading from occurring
3559 // in places where applications using reflection didn't expect it.
3560 if (is_reflection_class_loader(loader)) {
3561 return parent(loader);
3562 }
3563 return loader;
3564 }
3565
3566 oop java_lang_ClassLoader::unnamedModule(oop loader) {
3567 assert(is_instance(loader), "loader must be oop");
3568 return loader->obj_field(unnamedModule_offset);
3569 }
3570
3571 // Support for java_lang_System
3572 int java_lang_System::in_offset_in_bytes() {
3573 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset);
3574 }
3575
3576
3577 int java_lang_System::out_offset_in_bytes() {
3578 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset);
3579 }
3580
3581
3582 int java_lang_System::err_offset_in_bytes() {
3583 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset);
3584 }
3585
3586
3587 bool java_lang_System::has_security_manager() {
3588 InstanceKlass* ik = SystemDictionary::System_klass();
3589 address addr = ik->static_field_addr(static_security_offset);
3590 if (UseCompressedOops) {
3591 return oopDesc::load_decode_heap_oop((narrowOop *)addr) != NULL;
3592 } else {
3593 return oopDesc::load_decode_heap_oop((oop*)addr) != NULL;
3594 }
3595 }
3596
3597 int java_lang_Class::_klass_offset;
3598 int java_lang_Class::_array_klass_offset;
3599 int java_lang_Class::_oop_size_offset;
3600 int java_lang_Class::_static_oop_field_count_offset;
3601 int java_lang_Class::_class_loader_offset;
3602 int java_lang_Class::_module_offset;
3603 int java_lang_Class::_protection_domain_offset;
3604 int java_lang_Class::_component_mirror_offset;
3605 int java_lang_Class::_init_lock_offset;
3606 int java_lang_Class::_signers_offset;
3607 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
3608 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
3609 int java_lang_Throwable::backtrace_offset;
3610 int java_lang_Throwable::detailMessage_offset;
3611 int java_lang_Throwable::stackTrace_offset;
3612 int java_lang_Throwable::depth_offset;
3613 int java_lang_Throwable::static_unassigned_stacktrace_offset;
3614 int java_lang_reflect_AccessibleObject::override_offset;
3615 int java_lang_reflect_Method::clazz_offset;
3616 int java_lang_reflect_Method::name_offset;
3617 int java_lang_reflect_Method::returnType_offset;
3618 int java_lang_reflect_Method::parameterTypes_offset;
3619 int java_lang_reflect_Method::exceptionTypes_offset;
3620 int java_lang_reflect_Method::slot_offset;
3621 int java_lang_reflect_Method::modifiers_offset;
3622 int java_lang_reflect_Method::signature_offset;
3623 int java_lang_reflect_Method::annotations_offset;
3624 int java_lang_reflect_Method::parameter_annotations_offset;
3625 int java_lang_reflect_Method::annotation_default_offset;
3626 int java_lang_reflect_Method::type_annotations_offset;
3627 int java_lang_reflect_Constructor::clazz_offset;
3628 int java_lang_reflect_Constructor::parameterTypes_offset;
3629 int java_lang_reflect_Constructor::exceptionTypes_offset;
3630 int java_lang_reflect_Constructor::slot_offset;
3631 int java_lang_reflect_Constructor::modifiers_offset;
3632 int java_lang_reflect_Constructor::signature_offset;
3633 int java_lang_reflect_Constructor::annotations_offset;
3634 int java_lang_reflect_Constructor::parameter_annotations_offset;
3635 int java_lang_reflect_Constructor::type_annotations_offset;
3636 int java_lang_reflect_Field::clazz_offset;
3637 int java_lang_reflect_Field::name_offset;
3638 int java_lang_reflect_Field::type_offset;
3639 int java_lang_reflect_Field::slot_offset;
3640 int java_lang_reflect_Field::modifiers_offset;
3641 int java_lang_reflect_Field::signature_offset;
3642 int java_lang_reflect_Field::annotations_offset;
3643 int java_lang_reflect_Field::type_annotations_offset;
3644 int java_lang_reflect_Parameter::name_offset;
3645 int java_lang_reflect_Parameter::modifiers_offset;
3646 int java_lang_reflect_Parameter::index_offset;
3647 int java_lang_reflect_Parameter::executable_offset;
3648 int java_lang_boxing_object::value_offset;
3649 int java_lang_boxing_object::long_value_offset;
3650 int java_lang_ref_Reference::referent_offset;
3651 int java_lang_ref_Reference::queue_offset;
3652 int java_lang_ref_Reference::next_offset;
3653 int java_lang_ref_Reference::discovered_offset;
3654 int java_lang_ref_Reference::number_of_fake_oop_fields;
3655 int java_lang_ref_SoftReference::timestamp_offset;
3656 int java_lang_ref_SoftReference::static_clock_offset;
3657 int java_lang_ClassLoader::parent_offset;
3658 int java_lang_System::static_in_offset;
3659 int java_lang_System::static_out_offset;
3660 int java_lang_System::static_err_offset;
3661 int java_lang_System::static_security_offset;
3662 int java_lang_StackTraceElement::methodName_offset;
3663 int java_lang_StackTraceElement::fileName_offset;
3664 int java_lang_StackTraceElement::lineNumber_offset;
3665 int java_lang_StackTraceElement::moduleName_offset;
3666 int java_lang_StackTraceElement::moduleVersion_offset;
3667 int java_lang_StackTraceElement::classLoaderName_offset;
3668 int java_lang_StackTraceElement::declaringClass_offset;
3669 int java_lang_StackTraceElement::declaringClassObject_offset;
3670 int java_lang_StackFrameInfo::_declaringClass_offset;
3671 int java_lang_StackFrameInfo::_memberName_offset;
3672 int java_lang_StackFrameInfo::_bci_offset;
3673 int java_lang_StackFrameInfo::_version_offset;
3674 int java_lang_LiveStackFrameInfo::_monitors_offset;
3675 int java_lang_LiveStackFrameInfo::_locals_offset;
3676 int java_lang_LiveStackFrameInfo::_operands_offset;
3677 int java_lang_LiveStackFrameInfo::_mode_offset;
3678 int java_lang_AssertionStatusDirectives::classes_offset;
3679 int java_lang_AssertionStatusDirectives::classEnabled_offset;
3680 int java_lang_AssertionStatusDirectives::packages_offset;
3681 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
3682 int java_lang_AssertionStatusDirectives::deflt_offset;
3683 int java_nio_Buffer::_limit_offset;
3684 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0;
3685 int reflect_ConstantPool::_oop_offset;
3686 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
3687
3688
3689 // Support for java_lang_StackTraceElement
3690
3691 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
3692 element->obj_field_put(fileName_offset, value);
3693 }
3694
3695 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
3696 element->obj_field_put(declaringClass_offset, value);
3697 }
3698
3699 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
3700 element->obj_field_put(methodName_offset, value);
3701 }
3702
3703 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
3704 element->int_field_put(lineNumber_offset, value);
3705 }
3706
3707 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
3708 element->obj_field_put(moduleName_offset, value);
3709 }
3710
3711 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
3712 element->obj_field_put(moduleVersion_offset, value);
3713 }
3714
3715 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
3716 element->obj_field_put(classLoaderName_offset, value);
3717 }
3718
3719 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
3720 element->obj_field_put(declaringClassObject_offset, value);
3721 }
3722
3723 // Support for java_lang_StackFrameInfo
3724 void java_lang_StackFrameInfo::set_declaringClass(oop element, oop value) {
3725 element->obj_field_put(_declaringClass_offset, value);
3726 }
3727
3728 void java_lang_StackFrameInfo::set_version(oop element, short value) {
3729 element->short_field_put(_version_offset, value);
3730 }
3731
3732 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
3733 element->int_field_put(_bci_offset, value);
3734 }
3735
3736 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
3737 element->obj_field_put(_monitors_offset, value);
3738 }
3739
3740 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
3741 element->obj_field_put(_locals_offset, value);
3742 }
3743
3744 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
3745 element->obj_field_put(_operands_offset, value);
3746 }
3747
3748 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
3749 element->int_field_put(_mode_offset, value);
3750 }
3751
3752 // Support for java Assertions - java_lang_AssertionStatusDirectives.
3753
3754 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
3755 o->obj_field_put(classes_offset, val);
3756 }
3757
3758 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
3759 o->obj_field_put(classEnabled_offset, val);
3760 }
3761
3762 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
3763 o->obj_field_put(packages_offset, val);
3764 }
3765
3766 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
3767 o->obj_field_put(packageEnabled_offset, val);
3768 }
3769
3770 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
3771 o->bool_field_put(deflt_offset, val);
3772 }
3773
3774
3775 // Support for intrinsification of java.nio.Buffer.checkIndex
3776 int java_nio_Buffer::limit_offset() {
3777 return _limit_offset;
3778 }
3779
3780
3781 void java_nio_Buffer::compute_offsets() {
3782 Klass* k = SystemDictionary::nio_Buffer_klass();
3783 assert(k != NULL, "must be loaded in 1.4+");
3784 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature());
3785 }
3786
3787 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) {
3788 if (_owner_offset != 0) return;
3789
3790 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK);
3791 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass();
3792 compute_offset(_owner_offset, k,
3793 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature());
3794 }
3795
3796 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
3797 assert(_owner_offset != 0, "Must be initialized");
3798 return obj->obj_field(_owner_offset);
3799 }
3800
3801 // Compute hard-coded offsets
3802 // Invoked before SystemDictionary::initialize, so pre-loaded classes
3803 // are not available to determine the offset_of_static_fields.
3804 void JavaClasses::compute_hard_coded_offsets() {
3805 const int x = heapOopSize;
3806 const int header = instanceOopDesc::base_offset_in_bytes();
3807
3808 // Throwable Class
3809 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header;
3810 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header;
3811 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header;
3812 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x;
3813
3814 // java_lang_boxing_object
3815 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header;
3816 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong);
3817
3818 // java_lang_ref_Reference:
3819 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header;
3820 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header;
3821 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header;
3822 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header;
3823 // Artificial fields for java_lang_ref_Reference
3824 // The first field is for the discovered field added in 1.4
3825 java_lang_ref_Reference::number_of_fake_oop_fields = 1;
3826
3827 // java_lang_ref_SoftReference Class
3828 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong);
3829 // Don't multiply static fields because they are always in wordSize units
3830 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x;
3831
3832 // java_lang_ClassLoader
3833 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header;
3834
3835 // java_lang_System
3836 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x;
3837 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x;
3838 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x;
3839 java_lang_System::static_security_offset = java_lang_System::hc_static_security_offset * x;
3840
3841 // java_lang_StackTraceElement
3842 java_lang_StackTraceElement::declaringClassObject_offset = java_lang_StackTraceElement::hc_declaringClassObject_offset * x + header;
3843 java_lang_StackTraceElement::classLoaderName_offset = java_lang_StackTraceElement::hc_classLoaderName_offset * x + header;
3844 java_lang_StackTraceElement::moduleName_offset = java_lang_StackTraceElement::hc_moduleName_offset * x + header;
3845 java_lang_StackTraceElement::moduleVersion_offset = java_lang_StackTraceElement::hc_moduleVersion_offset * x + header;
3846 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header;
3847 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header;
3848 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header;
3849 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header;
3850 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header;
3851 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header;
3852 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header;
3853 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header;
3854 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header;
3855
3856 }
3857
3858
3859 // Compute non-hard-coded field offsets of all the classes in this file
3860 void JavaClasses::compute_offsets() {
3861 // java_lang_Class::compute_offsets was called earlier in bootstrap
3862 java_lang_ClassLoader::compute_offsets();
3863 java_lang_Throwable::compute_offsets();
3864 java_lang_Thread::compute_offsets();
3865 java_lang_ThreadGroup::compute_offsets();
3866 java_lang_invoke_MethodHandle::compute_offsets();
3867 java_lang_invoke_DirectMethodHandle::compute_offsets();
3868 java_lang_invoke_MemberName::compute_offsets();
3869 java_lang_invoke_LambdaForm::compute_offsets();
3870 java_lang_invoke_MethodType::compute_offsets();
3871 java_lang_invoke_CallSite::compute_offsets();
3872 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
3873 java_security_AccessControlContext::compute_offsets();
3874 // Initialize reflection classes. The layouts of these classes
3875 // changed with the new reflection implementation in JDK 1.4, and
3876 // since the Universe doesn't know what JDK version it is until this
3877 // point we defer computation of these offsets until now.
3878 java_lang_reflect_AccessibleObject::compute_offsets();
3879 java_lang_reflect_Method::compute_offsets();
3880 java_lang_reflect_Constructor::compute_offsets();
3881 java_lang_reflect_Field::compute_offsets();
3882 java_nio_Buffer::compute_offsets();
3883 reflect_ConstantPool::compute_offsets();
3884 reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
3885 java_lang_reflect_Parameter::compute_offsets();
3886 java_lang_reflect_Module::compute_offsets();
3887 java_lang_StackFrameInfo::compute_offsets();
3888 java_lang_LiveStackFrameInfo::compute_offsets();
3889
3890 // generated interpreter code wants to know about the offsets we just computed:
3891 AbstractAssembler::update_delayed_values();
3892 }
3893
3894 #ifndef PRODUCT
3895
3896 // These functions exist to assert the validity of hard-coded field offsets to guard
3897 // against changes in the class files
3898
3899 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3900 EXCEPTION_MARK;
3901 fieldDescriptor fd;
3902 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3903 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3904 instanceKlassHandle h_klass (THREAD, k);
3905 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3906 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3907 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3908 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
3909 return false;
3910 }
3911 if (fd.is_static()) {
3912 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
3913 return false;
3914 }
3915 if (fd.offset() == hardcoded_offset ) {
3916 return true;
3917 } else {
3918 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
3919 klass_name, field_name, hardcoded_offset, fd.offset());
3920 return false;
3921 }
3922 }
3923
3924
3925 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
3926 EXCEPTION_MARK;
3927 fieldDescriptor fd;
3928 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3929 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3930 instanceKlassHandle h_klass (THREAD, k);
3931 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3932 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3933 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3934 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3935 return false;
3936 }
3937 if (!fd.is_static()) {
3938 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name);
3939 return false;
3940 }
3941 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) {
3942 return true;
3943 } else {
3944 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());
3945 return false;
3946 }
3947 }
3948
3949
3950 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) {
3951 EXCEPTION_MARK;
3952 fieldDescriptor fd;
3953 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
3954 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
3955 instanceKlassHandle h_klass (THREAD, k);
3956 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
3957 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
3958 if (!h_klass->find_local_field(f_name, f_sig, &fd)) {
3959 tty->print_cr("Static field %s.%s not found", klass_name, field_name);
3960 return false;
3961 }
3962 if (!fd.is_static() || !fd.has_initial_value()) {
3963 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name);
3964 return false;
3965 }
3966 if (!fd.initial_value_tag().is_int()) {
3967 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name);
3968 return false;
3969 }
3970 jint field_value = fd.int_initial_value();
3971 if (field_value == hardcoded_constant) {
3972 return true;
3973 } else {
3974 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);
3975 return false;
3976 }
3977 }
3978
3979
3980 // Check the hard-coded field offsets of all the classes in this file
3981
3982 void JavaClasses::check_offsets() {
3983 bool valid = true;
3984 HandleMark hm;
3985
3986 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3987 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
3988
3989 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3990 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
3991
3992 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
3993 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig)
3994
3995 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \
3996 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig)
3997
3998 // java.lang.String
3999
4000 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[B");
4001 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I");
4002 CHECK_OFFSET("java/lang/String", java_lang_String, coder, "B");
4003
4004 // java.lang.Class
4005
4006 // Fake fields
4007 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked
4008 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked
4009
4010 // java.lang.Throwable
4011
4012 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;");
4013 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;");
4014 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;");
4015 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, depth, "I");
4016
4017 // Boxed primitive objects (java_lang_boxing_object)
4018
4019 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4020 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4021 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4022 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4023 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4024 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4025 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4026 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4027
4028 // java.lang.ClassLoader
4029
4030 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;");
4031
4032 // java.lang.System
4033
4034 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;");
4035 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;");
4036 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;");
4037 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, security, "Ljava/lang/SecurityManager;");
4038
4039 // java.lang.StackTraceElement
4040
4041 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClassObject, "Ljava/lang/Class;");
4042 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, classLoaderName, "Ljava/lang/String;");
4043 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, moduleName, "Ljava/lang/String;");
4044 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, moduleVersion, "Ljava/lang/String;");
4045 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;");
4046 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;");
4047 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;");
4048 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I");
4049
4050 // java.lang.ref.Reference
4051
4052 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4053 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4054 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4055 // Fake field
4056 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4057
4058 // java.lang.ref.SoftReference
4059
4060 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J");
4061 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J");
4062
4063 // java.lang.AssertionStatusDirectives
4064 //
4065 // The CheckAssertionStatusDirectives boolean can be removed from here and
4066 // globals.hpp after the AssertionStatusDirectives class has been integrated
4067 // into merlin "for some time." Without it, the vm will fail with early
4068 // merlin builds.
4069
4070 if (CheckAssertionStatusDirectives) {
4071 const char* nm = "java/lang/AssertionStatusDirectives";
4072 const char* sig = "[Ljava/lang/String;";
4073 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig);
4074 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z");
4075 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig);
4076 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z");
4077 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z");
4078 }
4079
4080 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4081 }
4082
4083 #endif // PRODUCT
4084
4085 int InjectedField::compute_offset() {
4086 InstanceKlass* ik = InstanceKlass::cast(klass());
4087 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4088 if (!may_be_java && !fs.access_flags().is_internal()) {
4089 // Only look at injected fields
4090 continue;
4091 }
4092 if (fs.name() == name() && fs.signature() == signature()) {
4093 return fs.offset();
4094 }
4095 }
4096 ResourceMark rm;
4097 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)" : "");
4098 #ifndef PRODUCT
4099 ik->print();
4100 tty->print_cr("all fields:");
4101 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4102 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4103 }
4104 #endif //PRODUCT
4105 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
4106 return -1;
4107 }
4108
4109 void javaClasses_init() {
4110 JavaClasses::compute_offsets();
4111 JavaClasses::check_offsets();
4112 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4113 }