1 /*
2 * Copyright (c) 1997, 2018, 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 "interpreter/linkResolver.hpp"
37 #include "logging/log.hpp"
38 #include "logging/logStream.hpp"
39 #include "memory/oopFactory.hpp"
40 #include "memory/metaspaceShared.hpp"
41 #include "memory/resourceArea.hpp"
42 #include "memory/universe.hpp"
43 #include "oops/fieldStreams.hpp"
44 #include "oops/instanceKlass.hpp"
45 #include "oops/instanceMirrorKlass.hpp"
46 #include "oops/klass.hpp"
47 #include "oops/method.inline.hpp"
48 #include "oops/objArrayOop.inline.hpp"
49 #include "oops/oop.inline.hpp"
50 #include "oops/symbol.hpp"
51 #include "oops/typeArrayOop.inline.hpp"
52 #include "prims/resolvedMethodTable.hpp"
53 #include "runtime/fieldDescriptor.hpp"
54 #include "runtime/frame.inline.hpp"
55 #include "runtime/handles.inline.hpp"
56 #include "runtime/interfaceSupport.inline.hpp"
57 #include "runtime/java.hpp"
58 #include "runtime/javaCalls.hpp"
59 #include "runtime/jniHandles.inline.hpp"
60 #include "runtime/safepoint.hpp"
61 #include "runtime/safepointVerifiers.hpp"
62 #include "runtime/thread.inline.hpp"
63 #include "runtime/vframe.inline.hpp"
64 #include "utilities/align.hpp"
65 #include "utilities/preserveException.hpp"
66
67 #if INCLUDE_JVMCI
68 #include "jvmci/jvmciJavaClasses.hpp"
69 #endif
70
71 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
72 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
73
74 #if INCLUDE_CDS
75 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
76 f->do_u4((u4*)&_##name##_offset);
77 #endif
78
79 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
80 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
81
82 InjectedField JavaClasses::_injected_fields[] = {
83 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
84 };
85
86 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
87 return _injected_fields[id].compute_offset();
88 }
89
90
91 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
92 *field_count = 0;
93
94 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
95 if (sid == vmSymbols::NO_SID) {
96 // Only well known classes can inject fields
97 return NULL;
98 }
99
100 int count = 0;
101 int start = -1;
102
103 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
104 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
105 count++; \
106 if (start == -1) start = klass##_##name##_enum; \
107 }
108 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
109 #undef LOOKUP_INJECTED_FIELD
110
111 if (start != -1) {
112 *field_count = count;
113 return _injected_fields + start;
114 }
115 return NULL;
116 }
117
118
119 // Helpful routine for computing field offsets at run time rather than hardcoding them
120 // Finds local fields only, including static fields. Static field offsets are from the
121 // beginning of the mirror.
122 static void compute_offset(int &dest_offset,
123 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
124 bool is_static = false) {
125 fieldDescriptor fd;
126 if (ik == NULL) {
127 ResourceMark rm;
128 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
129 vm_exit_during_initialization("Invalid layout of preloaded class");
130 }
131
132 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
133 ResourceMark rm;
134 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
135 name_symbol->as_C_string(), signature_symbol->as_C_string());
136 #ifndef PRODUCT
137 // Prints all fields and offsets
138 Log(class) lt;
139 LogStream ls(lt.error());
140 ik->print_on(&ls);
141 #endif //PRODUCT
142 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
143 }
144 dest_offset = fd.offset();
145 }
146
147 // Overloading to pass name as a string.
148 static void compute_offset(int& dest_offset, InstanceKlass* ik,
149 const char* name_string, Symbol* signature_symbol,
150 bool is_static = false) {
151 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
152 if (name == NULL) {
153 ResourceMark rm;
154 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
155 vm_exit_during_initialization("Invalid layout of preloaded class", ik->external_name());
156 }
157 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
158 }
159
160 // Same as above but for "optional" offsets that might not be present in certain JDK versions
161 // Old versions should be cleaned out since Hotspot only supports the current JDK, and this
162 // function should be removed.
163 static void
164 compute_optional_offset(int& dest_offset,
165 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol) {
166 fieldDescriptor fd;
167 if (ik->find_local_field(name_symbol, signature_symbol, &fd)) {
168 dest_offset = fd.offset();
169 }
170 }
171
172 int java_lang_String::value_offset = 0;
173 int java_lang_String::hash_offset = 0;
174 int java_lang_String::coder_offset = 0;
175
176 bool java_lang_String::initialized = false;
177
178 bool java_lang_String::is_instance(oop obj) {
179 return is_instance_inlined(obj);
180 }
181
182 #if INCLUDE_CDS
183 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
184 f->do_u4((u4*)&offset)
185
186 #define FIELD_SERIALIZE_OFFSET_OPTIONAL(offset, klass, name, signature) \
187 f->do_u4((u4*)&offset)
188 #endif
189
190 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
191 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
192
193 #define FIELD_COMPUTE_OFFSET_OPTIONAL(offset, klass, name, signature) \
194 compute_optional_offset(offset, klass, name, vmSymbols::signature())
195
196 #define STRING_FIELDS_DO(macro) \
197 macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
198 macro(hash_offset, k, "hash", int_signature, false); \
199 macro(coder_offset, k, "coder", byte_signature, false)
200
201 void java_lang_String::compute_offsets() {
202 if (initialized) {
203 return;
204 }
205
206 InstanceKlass* k = SystemDictionary::String_klass();
207 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
208
209 initialized = true;
210 }
211
212 #if INCLUDE_CDS
213 void java_lang_String::serialize(SerializeClosure* f) {
214 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
215 f->do_u4((u4*)&initialized);
216 }
217 #endif
218
219 class CompactStringsFixup : public FieldClosure {
220 private:
221 bool _value;
222
223 public:
224 CompactStringsFixup(bool value) : _value(value) {}
225
226 void do_field(fieldDescriptor* fd) {
227 if (fd->name() == vmSymbols::compact_strings_name()) {
228 oop mirror = fd->field_holder()->java_mirror();
229 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
230 assert(mirror != NULL, "String must have mirror already");
231 mirror->bool_field_put(fd->offset(), _value);
232 }
233 }
234 };
235
236 void java_lang_String::set_compact_strings(bool value) {
237 CompactStringsFixup fix(value);
238 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
239 }
240
241 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
242 assert(initialized, "Must be initialized");
243 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
244
245 // Create the String object first, so there's a chance that the String
246 // and the char array it points to end up in the same cache line.
247 oop obj;
248 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
249
250 // Create the char array. The String object must be handlized here
251 // because GC can happen as a result of the allocation attempt.
252 Handle h_obj(THREAD, obj);
253 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
254 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
255
256 // Point the String at the char array
257 obj = h_obj();
258 set_value(obj, buffer);
259 // No need to zero the offset, allocation zero'ed the entire String object
260 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
261 return h_obj;
262 }
263
264 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
265 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
266 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
267 typeArrayOop buffer = value(h_obj());
268 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
269 if (is_latin1) {
270 for (int index = 0; index < length; index++) {
271 buffer->byte_at_put(index, (jbyte)unicode[index]);
272 }
273 } else {
274 for (int index = 0; index < length; index++) {
275 buffer->char_at_put(index, unicode[index]);
276 }
277 }
278
279 #ifdef ASSERT
280 {
281 ResourceMark rm;
282 char* expected = UNICODE::as_utf8(unicode, length);
283 char* actual = as_utf8_string(h_obj());
284 if (strcmp(expected, actual) != 0) {
285 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
286 ShouldNotReachHere();
287 }
288 }
289 #endif
290
291 return h_obj;
292 }
293
294 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
295 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
296 return h_obj();
297 }
298
299 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
300 if (utf8_str == NULL) {
301 return Handle();
302 }
303 bool has_multibyte, is_latin1;
304 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
305 if (!CompactStrings) {
306 has_multibyte = true;
307 is_latin1 = false;
308 }
309
310 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
311 if (length > 0) {
312 if (!has_multibyte) {
313 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
314 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
315 } else if (is_latin1) {
316 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
317 } else {
318 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
319 }
320 }
321
322 #ifdef ASSERT
323 // This check is too strict because the input string is not necessarily valid UTF8.
324 // For example, it may be created with arbitrary content via jni_NewStringUTF.
325 /*
326 {
327 ResourceMark rm;
328 const char* expected = utf8_str;
329 char* actual = as_utf8_string(h_obj());
330 if (strcmp(expected, actual) != 0) {
331 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
332 ShouldNotReachHere();
333 }
334 }
335 */
336 #endif
337
338 return h_obj;
339 }
340
341 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
342 Handle h_obj = create_from_str(utf8_str, CHECK_0);
343 return h_obj();
344 }
345
346 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
347 const char* utf8_str = (char*)symbol->bytes();
348 int utf8_len = symbol->utf8_length();
349
350 bool has_multibyte, is_latin1;
351 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
352 if (!CompactStrings) {
353 has_multibyte = true;
354 is_latin1 = false;
355 }
356
357 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
358 if (length > 0) {
359 if (!has_multibyte) {
360 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
361 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
362 } else if (is_latin1) {
363 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
364 } else {
365 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
366 }
367 }
368
369 #ifdef ASSERT
370 {
371 ResourceMark rm;
372 const char* expected = symbol->as_utf8();
373 char* actual = as_utf8_string(h_obj());
374 if (strncmp(expected, actual, utf8_len) != 0) {
375 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
376 ShouldNotReachHere();
377 }
378 }
379 #endif
380
381 return h_obj;
382 }
383
384 // Converts a C string to a Java String based on current encoding
385 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
386 assert(str != NULL, "bad arguments");
387
388 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
389 static to_java_string_fn_t _to_java_string_fn = NULL;
390
391 if (_to_java_string_fn == NULL) {
392 void *lib_handle = os::native_java_library();
393 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
394 if (_to_java_string_fn == NULL) {
395 fatal("NewStringPlatform missing");
396 }
397 }
398
399 jstring js = NULL;
400 { JavaThread* thread = (JavaThread*)THREAD;
401 assert(thread->is_Java_thread(), "must be java thread");
402 HandleMark hm(thread);
403 ThreadToNativeFromVM ttn(thread);
404 js = (_to_java_string_fn)(thread->jni_environment(), str);
405 }
406 return Handle(THREAD, JNIHandles::resolve(js));
407 }
408
409 // Converts a Java String to a native C string that can be used for
410 // native OS calls.
411 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
412 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
413 static to_platform_string_fn_t _to_platform_string_fn = NULL;
414
415 if (_to_platform_string_fn == NULL) {
416 void *lib_handle = os::native_java_library();
417 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
418 if (_to_platform_string_fn == NULL) {
419 fatal("GetStringPlatformChars missing");
420 }
421 }
422
423 char *native_platform_string;
424 { JavaThread* thread = (JavaThread*)THREAD;
425 assert(thread->is_Java_thread(), "must be java thread");
426 JNIEnv *env = thread->jni_environment();
427 jstring js = (jstring) JNIHandles::make_local(env, java_string());
428 bool is_copy;
429 HandleMark hm(thread);
430 ThreadToNativeFromVM ttn(thread);
431 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
432 assert(is_copy == JNI_TRUE, "is_copy value changed");
433 JNIHandles::destroy_local(js);
434 }
435 return native_platform_string;
436 }
437
438 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
439 oop obj = java_string();
440 // Typical usage is to convert all '/' to '.' in string.
441 typeArrayOop value = java_lang_String::value(obj);
442 int length = java_lang_String::length(obj);
443 bool is_latin1 = java_lang_String::is_latin1(obj);
444
445 // First check if any from_char exist
446 int index; // Declared outside, used later
447 for (index = 0; index < length; index++) {
448 jchar c = !is_latin1 ? value->char_at(index) :
449 ((jchar) value->byte_at(index)) & 0xff;
450 if (c == from_char) {
451 break;
452 }
453 }
454 if (index == length) {
455 // No from_char, so do not copy.
456 return java_string;
457 }
458
459 // Check if result string will be latin1
460 bool to_is_latin1 = false;
461
462 // Replacement char must be latin1
463 if (CompactStrings && UNICODE::is_latin1(to_char)) {
464 if (is_latin1) {
465 // Source string is latin1 as well
466 to_is_latin1 = true;
467 } else if (!UNICODE::is_latin1(from_char)) {
468 // We are replacing an UTF16 char. Scan string to
469 // check if result can be latin1 encoded.
470 to_is_latin1 = true;
471 for (index = 0; index < length; index++) {
472 jchar c = value->char_at(index);
473 if (c != from_char && !UNICODE::is_latin1(c)) {
474 to_is_latin1 = false;
475 break;
476 }
477 }
478 }
479 }
480
481 // Create new UNICODE (or byte) buffer. Must handlize value because GC
482 // may happen during String and char array creation.
483 typeArrayHandle h_value(THREAD, value);
484 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
485 typeArrayOop from_buffer = h_value();
486 typeArrayOop to_buffer = java_lang_String::value(string());
487
488 // Copy contents
489 for (index = 0; index < length; index++) {
490 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
491 ((jchar) from_buffer->byte_at(index)) & 0xff;
492 if (c == from_char) {
493 c = to_char;
494 }
495 if (!to_is_latin1) {
496 to_buffer->char_at_put(index, c);
497 } else {
498 to_buffer->byte_at_put(index, (jbyte) c);
499 }
500 }
501 return string;
502 }
503
504 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
505 typeArrayOop value = java_lang_String::value(java_string);
506 length = java_lang_String::length(java_string);
507 bool is_latin1 = java_lang_String::is_latin1(java_string);
508
509 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
510 if (result != NULL) {
511 if (!is_latin1) {
512 for (int index = 0; index < length; index++) {
513 result[index] = value->char_at(index);
514 }
515 } else {
516 for (int index = 0; index < length; index++) {
517 result[index] = ((jchar) value->byte_at(index)) & 0xff;
518 }
519 }
520 } else {
521 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
522 }
523 return result;
524 }
525
526 unsigned int java_lang_String::hash_code(oop java_string) {
527 int length = java_lang_String::length(java_string);
528 // Zero length string will hash to zero with String.hashCode() function.
529 if (length == 0) return 0;
530
531 typeArrayOop value = java_lang_String::value(java_string);
532 bool is_latin1 = java_lang_String::is_latin1(java_string);
533
534 if (is_latin1) {
535 return java_lang_String::hash_code(value->byte_at_addr(0), length);
536 } else {
537 return java_lang_String::hash_code(value->char_at_addr(0), length);
538 }
539 }
540
541 char* java_lang_String::as_quoted_ascii(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
546 if (length == 0) return NULL;
547
548 char* result;
549 int result_length;
550 if (!is_latin1) {
551 jchar* base = value->char_at_addr(0);
552 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
553 result = NEW_RESOURCE_ARRAY(char, result_length);
554 UNICODE::as_quoted_ascii(base, length, result, result_length);
555 } else {
556 jbyte* base = value->byte_at_addr(0);
557 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
558 result = NEW_RESOURCE_ARRAY(char, result_length);
559 UNICODE::as_quoted_ascii(base, length, result, result_length);
560 }
561 assert(result_length >= length + 1, "must not be shorter");
562 assert(result_length == (int)strlen(result) + 1, "must match");
563 return result;
564 }
565
566 Symbol* java_lang_String::as_symbol(oop java_string, TRAPS) {
567 typeArrayOop value = java_lang_String::value(java_string);
568 int length = java_lang_String::length(java_string);
569 bool is_latin1 = java_lang_String::is_latin1(java_string);
570 if (!is_latin1) {
571 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
572 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
573 return sym;
574 } else {
575 ResourceMark rm;
576 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
577 const char* base = UNICODE::as_utf8(position, length);
578 Symbol* sym = SymbolTable::lookup(base, length, THREAD);
579 return sym;
580 }
581 }
582
583 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
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* base = (length == 0) ? NULL : value->char_at_addr(0);
589 return SymbolTable::probe_unicode(base, length);
590 } else {
591 ResourceMark rm;
592 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
593 const char* base = UNICODE::as_utf8(position, length);
594 return SymbolTable::probe(base, length);
595 }
596 }
597
598 int java_lang_String::utf8_length(oop java_string) {
599 typeArrayOop value = java_lang_String::value(java_string);
600 int length = java_lang_String::length(java_string);
601 bool is_latin1 = java_lang_String::is_latin1(java_string);
602 if (length == 0) {
603 return 0;
604 }
605 if (!is_latin1) {
606 return UNICODE::utf8_length(value->char_at_addr(0), length);
607 } else {
608 return UNICODE::utf8_length(value->byte_at_addr(0), length);
609 }
610 }
611
612 char* java_lang_String::as_utf8_string(oop java_string) {
613 typeArrayOop value = java_lang_String::value(java_string);
614 int length = java_lang_String::length(java_string);
615 bool is_latin1 = java_lang_String::is_latin1(java_string);
616 if (!is_latin1) {
617 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
618 return UNICODE::as_utf8(position, length);
619 } else {
620 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
621 return UNICODE::as_utf8(position, length);
622 }
623 }
624
625 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
626 typeArrayOop value = java_lang_String::value(java_string);
627 int length = java_lang_String::length(java_string);
628 bool is_latin1 = java_lang_String::is_latin1(java_string);
629 if (!is_latin1) {
630 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
631 return UNICODE::as_utf8(position, length, buf, buflen);
632 } else {
633 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
634 return UNICODE::as_utf8(position, length, buf, buflen);
635 }
636 }
637
638 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
639 typeArrayOop value = java_lang_String::value(java_string);
640 int length = java_lang_String::length(java_string);
641 assert(start + len <= length, "just checking");
642 bool is_latin1 = java_lang_String::is_latin1(java_string);
643 if (!is_latin1) {
644 jchar* position = value->char_at_addr(start);
645 return UNICODE::as_utf8(position, len);
646 } else {
647 jbyte* position = value->byte_at_addr(start);
648 return UNICODE::as_utf8(position, len);
649 }
650 }
651
652 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
653 typeArrayOop value = java_lang_String::value(java_string);
654 int length = java_lang_String::length(java_string);
655 assert(start + len <= length, "just checking");
656 bool is_latin1 = java_lang_String::is_latin1(java_string);
657 if (!is_latin1) {
658 jchar* position = value->char_at_addr(start);
659 return UNICODE::as_utf8(position, len, buf, buflen);
660 } else {
661 jbyte* position = value->byte_at_addr(start);
662 return UNICODE::as_utf8(position, len, buf, buflen);
663 }
664 }
665
666 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
667 assert(java_string->klass() == SystemDictionary::String_klass(),
668 "must be java_string");
669 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
670 int length = java_lang_String::length(java_string);
671 if (length != len) {
672 return false;
673 }
674 bool is_latin1 = java_lang_String::is_latin1(java_string);
675 if (!is_latin1) {
676 for (int i = 0; i < len; i++) {
677 if (value->char_at(i) != chars[i]) {
678 return false;
679 }
680 }
681 } else {
682 for (int i = 0; i < len; i++) {
683 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
684 return false;
685 }
686 }
687 }
688 return true;
689 }
690
691 bool java_lang_String::equals(oop str1, oop str2) {
692 assert(str1->klass() == SystemDictionary::String_klass(),
693 "must be java String");
694 assert(str2->klass() == SystemDictionary::String_klass(),
695 "must be java String");
696 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
697 int length1 = java_lang_String::length(str1);
698 bool is_latin1 = java_lang_String::is_latin1(str1);
699 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
700 int length2 = java_lang_String::length(str2);
701 bool is_latin2 = java_lang_String::is_latin1(str2);
702
703 if ((length1 != length2) || (is_latin1 != is_latin2)) {
704 // Strings of different size or with different
705 // coders are never equal.
706 return false;
707 }
708 int blength1 = value1->length();
709 for (int i = 0; i < blength1; i++) {
710 if (value1->byte_at(i) != value2->byte_at(i)) {
711 return false;
712 }
713 }
714 return true;
715 }
716
717 void java_lang_String::print(oop java_string, outputStream* st) {
718 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
719 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
720
721 if (value == NULL) {
722 // This can happen if, e.g., printing a String
723 // object before its initializer has been called
724 st->print("NULL");
725 return;
726 }
727
728 int length = java_lang_String::length(java_string);
729 bool is_latin1 = java_lang_String::is_latin1(java_string);
730
731 st->print("\"");
732 for (int index = 0; index < length; index++) {
733 st->print("%c", (!is_latin1) ? value->char_at(index) :
734 ((jchar) value->byte_at(index)) & 0xff );
735 }
736 st->print("\"");
737 }
738
739
740 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
741 assert(mirror.not_null() && fd->is_static(), "just checking");
742 if (fd->has_initial_value()) {
743 BasicType t = fd->field_type();
744 switch (t) {
745 case T_BYTE:
746 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
747 break;
748 case T_BOOLEAN:
749 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
750 break;
751 case T_CHAR:
752 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
753 break;
754 case T_SHORT:
755 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
756 break;
757 case T_INT:
758 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
759 break;
760 case T_FLOAT:
761 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
762 break;
763 case T_DOUBLE:
764 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
765 break;
766 case T_LONG:
767 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
768 break;
769 case T_OBJECT:
770 {
771 assert(fd->signature() == vmSymbols::string_signature(),
772 "just checking");
773 if (DumpSharedSpaces && MetaspaceShared::is_archive_object(mirror())) {
774 // Archive the String field and update the pointer.
775 oop s = mirror()->obj_field(fd->offset());
776 oop archived_s = StringTable::create_archived_string(s, CHECK);
777 mirror()->obj_field_put(fd->offset(), archived_s);
778 } else {
779 oop string = fd->string_initial_value(CHECK);
780 mirror()->obj_field_put(fd->offset(), string);
781 }
782 }
783 break;
784 default:
785 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
786 "Illegal ConstantValue attribute in class file");
787 }
788 }
789 }
790
791
792 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
793 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
794
795 // If the offset was read from the shared archive, it was fixed up already
796 if (!k->is_shared()) {
797 if (k->is_instance_klass()) {
798 // During bootstrap, java.lang.Class wasn't loaded so static field
799 // offsets were computed without the size added it. Go back and
800 // update all the static field offsets to included the size.
801 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
802 if (fs.access_flags().is_static()) {
803 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
804 fs.set_offset(real_offset);
805 }
806 }
807 }
808 }
809
810 if (k->is_shared() && k->has_raw_archived_mirror()) {
811 if (MetaspaceShared::open_archive_heap_region_mapped()) {
812 oop m = k->archived_java_mirror();
813 assert(m != NULL, "archived mirror is NULL");
814 assert(MetaspaceShared::is_archive_object(m), "must be archived mirror object");
815 Handle m_h(THREAD, m);
816 // restore_archived_mirror() clears the klass' _has_raw_archived_mirror flag
817 restore_archived_mirror(k, m_h, Handle(), Handle(), Handle(), CHECK);
818 return;
819 } else {
820 k->set_java_mirror_handle(NULL);
821 k->clear_has_raw_archived_mirror();
822 }
823 }
824 create_mirror(k, Handle(), Handle(), Handle(), CHECK);
825 }
826
827 void java_lang_Class::initialize_mirror_fields(Klass* k,
828 Handle mirror,
829 Handle protection_domain,
830 TRAPS) {
831 // Allocate a simple java object for a lock.
832 // This needs to be a java object because during class initialization
833 // it can be held across a java call.
834 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
835 set_init_lock(mirror(), r);
836
837 // Set protection domain also
838 set_protection_domain(mirror(), protection_domain());
839
840 // Initialize static fields
841 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
842 }
843
844 // Set the java.lang.Module module field in the java_lang_Class mirror
845 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
846 if (module.is_null()) {
847 // During startup, the module may be NULL only if java.base has not been defined yet.
848 // Put the class on the fixup_module_list to patch later when the java.lang.Module
849 // for java.base is known.
850 assert(!Universe::is_module_initialized(), "Incorrect java.lang.Module pre module system initialization");
851
852 bool javabase_was_defined = false;
853 {
854 MutexLocker m1(Module_lock, THREAD);
855 // Keep list of classes needing java.base module fixup
856 if (!ModuleEntryTable::javabase_defined()) {
857 assert(k->java_mirror() != NULL, "Class's mirror is null");
858 k->class_loader_data()->inc_keep_alive();
859 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
860 fixup_module_field_list()->push(k);
861 } else {
862 javabase_was_defined = true;
863 }
864 }
865
866 // If java.base was already defined then patch this particular class with java.base.
867 if (javabase_was_defined) {
868 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
869 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
870 "Setting class module field, " JAVA_BASE_NAME " should be defined");
871 Handle javabase_handle(THREAD, javabase_entry->module());
872 set_module(mirror(), javabase_handle());
873 }
874 } else {
875 assert(Universe::is_module_initialized() ||
876 (ModuleEntryTable::javabase_defined() &&
877 (oopDesc::equals(module(), ModuleEntryTable::javabase_moduleEntry()->module()))),
878 "Incorrect java.lang.Module specification while creating mirror");
879 set_module(mirror(), module());
880 }
881 }
882
883 // Statically allocate fixup lists because they always get created.
884 void java_lang_Class::allocate_fixup_lists() {
885 GrowableArray<Klass*>* mirror_list =
886 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
887 set_fixup_mirror_list(mirror_list);
888
889 GrowableArray<Klass*>* module_list =
890 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
891 set_fixup_module_field_list(module_list);
892 }
893
894 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
895 Handle module, Handle protection_domain, TRAPS) {
896 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
897 assert(k->java_mirror() == NULL, "should only assign mirror once");
898
899 // Use this moment of initialization to cache modifier_flags also,
900 // to support Class.getModifiers(). Instance classes recalculate
901 // the cached flags after the class file is parsed, but before the
902 // class is put into the system dictionary.
903 int computed_modifiers = k->compute_modifier_flags(CHECK);
904 k->set_modifier_flags(computed_modifiers);
905 // Class_klass has to be loaded because it is used to allocate
906 // the mirror.
907 if (SystemDictionary::Class_klass_loaded()) {
908 // Allocate mirror (java.lang.Class instance)
909 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
910 Handle mirror(THREAD, mirror_oop);
911 Handle comp_mirror;
912
913 // Setup indirection from mirror->klass
914 java_lang_Class::set_klass(mirror(), k);
915
916 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
917 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
918
919 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
920
921 // It might also have a component mirror. This mirror must already exist.
922 if (k->is_array_klass()) {
923 if (k->is_typeArray_klass()) {
924 BasicType type = TypeArrayKlass::cast(k)->element_type();
925 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
926 } else {
927 assert(k->is_objArray_klass(), "Must be");
928 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
929 assert(element_klass != NULL, "Must have an element klass");
930 comp_mirror = Handle(THREAD, element_klass->java_mirror());
931 }
932 assert(comp_mirror() != NULL, "must have a mirror");
933
934 // Two-way link between the array klass and its component mirror:
935 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
936 set_component_mirror(mirror(), comp_mirror());
937 // See below for ordering dependencies between field array_klass in component mirror
938 // and java_mirror in this klass.
939 } else {
940 assert(k->is_instance_klass(), "Must be");
941
942 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
943 if (HAS_PENDING_EXCEPTION) {
944 // If any of the fields throws an exception like OOM remove the klass field
945 // from the mirror so GC doesn't follow it after the klass has been deallocated.
946 // This mirror looks like a primitive type, which logically it is because it
947 // it represents no class.
948 java_lang_Class::set_klass(mirror(), NULL);
949 return;
950 }
951 }
952
953 // set the classLoader field in the java_lang_Class instance
954 assert(oopDesc::equals(class_loader(), k->class_loader()), "should be same");
955 set_class_loader(mirror(), class_loader());
956
957 // Setup indirection from klass->mirror
958 // after any exceptions can happen during allocations.
959 k->set_java_mirror(mirror);
960
961 // Set the module field in the java_lang_Class instance. This must be done
962 // after the mirror is set.
963 set_mirror_module_field(k, mirror, module, THREAD);
964
965 if (comp_mirror() != NULL) {
966 // Set after k->java_mirror() is published, because compiled code running
967 // concurrently doesn't expect a k to have a null java_mirror.
968 release_set_array_klass(comp_mirror(), k);
969 }
970 } else {
971 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
972 fixup_mirror_list()->push(k);
973 }
974 }
975
976 #if INCLUDE_CDS_JAVA_HEAP
977 // Clears mirror fields. Static final fields with initial values are reloaded
978 // from constant pool. The object identity hash is in the object header and is
979 // not affected.
980 class ResetMirrorField: public FieldClosure {
981 private:
982 Handle _m;
983
984 public:
985 ResetMirrorField(Handle mirror) : _m(mirror) {}
986
987 void do_field(fieldDescriptor* fd) {
988 assert(DumpSharedSpaces, "dump time only");
989 assert(_m.not_null(), "Mirror cannot be NULL");
990
991 if (fd->is_static() && fd->has_initial_value()) {
992 initialize_static_field(fd, _m, Thread::current());
993 return;
994 }
995
996 BasicType ft = fd->field_type();
997 switch (ft) {
998 case T_BYTE:
999 _m()->byte_field_put(fd->offset(), 0);
1000 break;
1001 case T_CHAR:
1002 _m()->char_field_put(fd->offset(), 0);
1003 break;
1004 case T_DOUBLE:
1005 _m()->double_field_put(fd->offset(), 0);
1006 break;
1007 case T_FLOAT:
1008 _m()->float_field_put(fd->offset(), 0);
1009 break;
1010 case T_INT:
1011 _m()->int_field_put(fd->offset(), 0);
1012 break;
1013 case T_LONG:
1014 _m()->long_field_put(fd->offset(), 0);
1015 break;
1016 case T_SHORT:
1017 _m()->short_field_put(fd->offset(), 0);
1018 break;
1019 case T_BOOLEAN:
1020 _m()->bool_field_put(fd->offset(), false);
1021 break;
1022 case T_ARRAY:
1023 case T_OBJECT: {
1024 // It might be useful to cache the String field, but
1025 // for now just clear out any reference field
1026 oop o = _m()->obj_field(fd->offset());
1027 _m()->obj_field_put(fd->offset(), NULL);
1028 break;
1029 }
1030 default:
1031 ShouldNotReachHere();
1032 break;
1033 }
1034 }
1035 };
1036
1037 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1038 assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1039 "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1040
1041 for (int t = 0; t <= T_VOID; t++) {
1042 oop m = Universe::_mirrors[t];
1043 if (m != NULL) {
1044 // Update the field at _array_klass_offset to point to the relocated array klass.
1045 oop archived_m = MetaspaceShared::archive_heap_object(m, THREAD);
1046 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1047 assert(ak != NULL || t == T_VOID, "should not be NULL");
1048 if (ak != NULL) {
1049 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak);
1050 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1051 }
1052
1053 // Clear the fields. Just to be safe
1054 Klass *k = m->klass();
1055 Handle archived_mirror_h(THREAD, archived_m);
1056 ResetMirrorField reset(archived_mirror_h);
1057 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1058
1059 log_trace(cds, mirror)("Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1060 type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1061
1062 Universe::_mirrors[t] = archived_m;
1063 }
1064 }
1065
1066 assert(Universe::_mirrors[T_INT] != NULL &&
1067 Universe::_mirrors[T_FLOAT] != NULL &&
1068 Universe::_mirrors[T_DOUBLE] != NULL &&
1069 Universe::_mirrors[T_BYTE] != NULL &&
1070 Universe::_mirrors[T_BOOLEAN] != NULL &&
1071 Universe::_mirrors[T_CHAR] != NULL &&
1072 Universe::_mirrors[T_LONG] != NULL &&
1073 Universe::_mirrors[T_SHORT] != NULL &&
1074 Universe::_mirrors[T_VOID] != NULL, "sanity");
1075
1076 Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1077 Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1078 Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1079 Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1080 Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1081 Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1082 Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1083 Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1084 Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1085 }
1086
1087 //
1088 // After the mirror object is successfully archived, the archived
1089 // klass is set with _has_archived_raw_mirror flag.
1090 //
1091 // The _has_archived_raw_mirror flag is cleared at runtime when the
1092 // archived mirror is restored. If archived java heap data cannot
1093 // be used at runtime, new mirror object is created for the shared
1094 // class. The _has_archived_raw_mirror is cleared also during the process.
1095 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1096 assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1097 "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1098
1099 // Mirror is already archived
1100 if (k->has_raw_archived_mirror()) {
1101 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1102 return k->archived_java_mirror_raw();
1103 }
1104
1105 // No mirror
1106 oop mirror = k->java_mirror();
1107 if (mirror == NULL) {
1108 return NULL;
1109 }
1110
1111 if (k->is_instance_klass()) {
1112 InstanceKlass *ik = InstanceKlass::cast(k);
1113 assert(ik->signers() == NULL && !k->has_signer_and_not_archived(),
1114 "class with signer cannot be supported");
1115
1116 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1117 ik->is_shared_app_class())) {
1118 // Archiving mirror for classes from non-builtin loaders is not
1119 // supported. Clear the _java_mirror within the archived class.
1120 k->set_java_mirror_handle(NULL);
1121 return NULL;
1122 }
1123 }
1124
1125 // Now start archiving the mirror object
1126 oop archived_mirror = MetaspaceShared::archive_heap_object(mirror, THREAD);
1127 if (archived_mirror == NULL) {
1128 return NULL;
1129 }
1130
1131 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1132 if (archived_mirror == NULL) {
1133 return NULL;
1134 }
1135
1136 k->set_archived_java_mirror_raw(archived_mirror);
1137
1138 k->set_has_raw_archived_mirror();
1139
1140 ResourceMark rm;
1141 log_trace(cds, mirror)("Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1142 k->external_name(), p2i(mirror), p2i(archived_mirror));
1143
1144 return archived_mirror;
1145 }
1146
1147 // The process is based on create_mirror().
1148 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1149 oop archived_mirror,
1150 Thread *THREAD) {
1151 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1152 // to archived metadata and objects below.
1153 Klass *c = archived_mirror->klass();
1154 Handle archived_mirror_h(THREAD, archived_mirror);
1155 ResetMirrorField reset(archived_mirror_h);
1156 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1157
1158 if (k->is_array_klass()) {
1159 oop archived_comp_mirror;
1160 if (k->is_typeArray_klass()) {
1161 // The primitive type mirrors are already archived. Get the archived mirror.
1162 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1163 archived_comp_mirror = MetaspaceShared::find_archived_heap_object(comp_mirror);
1164 assert(archived_comp_mirror != NULL, "Must be");
1165 } else {
1166 assert(k->is_objArray_klass(), "Must be");
1167 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1168 assert(element_klass != NULL, "Must have an element klass");
1169 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1170 if (archived_comp_mirror == NULL) {
1171 return NULL;
1172 }
1173 }
1174 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1175 } else {
1176 assert(k->is_instance_klass(), "Must be");
1177
1178 // Reset local static fields in the mirror
1179 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1180
1181 java_lang_Class:set_init_lock(archived_mirror, NULL);
1182
1183 set_protection_domain(archived_mirror, NULL);
1184 }
1185
1186 // clear class loader and mirror_module_field
1187 set_class_loader(archived_mirror, NULL);
1188 set_module(archived_mirror, NULL);
1189
1190 // The archived mirror's field at _klass_offset is still pointing to the original
1191 // klass. Updated the field in the archived mirror to point to the relocated
1192 // klass in the archive.
1193 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror));
1194 log_debug(cds, mirror)("Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1195 p2i(as_Klass(mirror)), p2i(reloc_k));
1196 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1197
1198 // The field at _array_klass_offset is pointing to the original one dimension
1199 // higher array klass if exists. Relocate the pointer.
1200 Klass *arr = array_klass_acquire(mirror);
1201 if (arr != NULL) {
1202 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr);
1203 log_debug(cds, mirror)("Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1204 p2i(arr), p2i(reloc_arr));
1205 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1206 }
1207 return archived_mirror;
1208 }
1209
1210 // After the archived mirror object is restored, the shared klass'
1211 // _has_raw_archived_mirror flag is cleared
1212 void java_lang_Class::restore_archived_mirror(Klass *k, Handle mirror,
1213 Handle class_loader, Handle module,
1214 Handle protection_domain, TRAPS) {
1215
1216 // The java.lang.Class field offsets were archived and reloaded from archive.
1217 // No need to put classes on the fixup_mirror_list before java.lang.Class
1218 // is loaded.
1219
1220 if (!k->is_array_klass()) {
1221 // - local static final fields with initial values were initialized at dump time
1222
1223 // create the init_lock
1224 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
1225 set_init_lock(mirror(), r);
1226
1227 if (protection_domain.not_null()) {
1228 set_protection_domain(mirror(), protection_domain());
1229 }
1230 }
1231
1232 assert(class_loader() == k->class_loader(), "should be same");
1233 if (class_loader.not_null()) {
1234 set_class_loader(mirror(), class_loader());
1235 }
1236
1237 k->set_java_mirror(mirror);
1238 k->clear_has_raw_archived_mirror();
1239
1240 set_mirror_module_field(k, mirror, module, THREAD);
1241
1242 ResourceMark rm;
1243 log_trace(cds, mirror)("Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1244 }
1245 #endif // INCLUDE_CDS_JAVA_HEAP
1246
1247 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1248 assert(_module_offset != 0, "must have been computed already");
1249 java_lang_Class::set_module(k->java_mirror(), module());
1250 }
1251
1252 int java_lang_Class::oop_size(oop java_class) {
1253 assert(_oop_size_offset != 0, "must be set");
1254 int size = java_class->int_field(_oop_size_offset);
1255 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1256 return size;
1257 }
1258
1259 void java_lang_Class::set_oop_size(oop java_class, int size) {
1260 assert(_oop_size_offset != 0, "must be set");
1261 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1262 java_class->int_field_put(_oop_size_offset, size);
1263 }
1264
1265 int java_lang_Class::static_oop_field_count(oop java_class) {
1266 assert(_static_oop_field_count_offset != 0, "must be set");
1267 return java_class->int_field(_static_oop_field_count_offset);
1268 }
1269 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1270 assert(_static_oop_field_count_offset != 0, "must be set");
1271 java_class->int_field_put(_static_oop_field_count_offset, size);
1272 }
1273
1274 oop java_lang_Class::protection_domain(oop java_class) {
1275 assert(_protection_domain_offset != 0, "must be set");
1276 return java_class->obj_field(_protection_domain_offset);
1277 }
1278 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1279 assert(_protection_domain_offset != 0, "must be set");
1280 java_class->obj_field_put(_protection_domain_offset, pd);
1281 }
1282
1283 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1284 assert(_component_mirror_offset != 0, "must be set");
1285 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1286 }
1287 oop java_lang_Class::component_mirror(oop java_class) {
1288 assert(_component_mirror_offset != 0, "must be set");
1289 return java_class->obj_field(_component_mirror_offset);
1290 }
1291
1292 oop java_lang_Class::init_lock(oop java_class) {
1293 assert(_init_lock_offset != 0, "must be set");
1294 return java_class->obj_field(_init_lock_offset);
1295 }
1296 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1297 assert(_init_lock_offset != 0, "must be set");
1298 java_class->obj_field_put(_init_lock_offset, init_lock);
1299 }
1300
1301 objArrayOop java_lang_Class::signers(oop java_class) {
1302 assert(_signers_offset != 0, "must be set");
1303 return (objArrayOop)java_class->obj_field(_signers_offset);
1304 }
1305 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1306 assert(_signers_offset != 0, "must be set");
1307 java_class->obj_field_put(_signers_offset, (oop)signers);
1308 }
1309
1310
1311 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1312 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
1313 if (_class_loader_offset != 0) {
1314 java_class->obj_field_put(_class_loader_offset, loader);
1315 }
1316 }
1317
1318 oop java_lang_Class::class_loader(oop java_class) {
1319 assert(_class_loader_offset != 0, "must be set");
1320 return java_class->obj_field(_class_loader_offset);
1321 }
1322
1323 oop java_lang_Class::module(oop java_class) {
1324 assert(_module_offset != 0, "must be set");
1325 return java_class->obj_field(_module_offset);
1326 }
1327
1328 void java_lang_Class::set_module(oop java_class, oop module) {
1329 assert(_module_offset != 0, "must be set");
1330 java_class->obj_field_put(_module_offset, module);
1331 }
1332
1333 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1334 // This should be improved by adding a field at the Java level or by
1335 // introducing a new VM klass (see comment in ClassFileParser)
1336 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
1337 if (type != T_VOID) {
1338 Klass* aklass = Universe::typeArrayKlassObj(type);
1339 assert(aklass != NULL, "correct bootstrap");
1340 release_set_array_klass(java_class, aklass);
1341 }
1342 #ifdef ASSERT
1343 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1344 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1345 #endif
1346 return java_class;
1347 }
1348
1349
1350 Klass* java_lang_Class::as_Klass(oop java_class) {
1351 //%note memory_2
1352 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1353 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1354 assert(k == NULL || k->is_klass(), "type check");
1355 return k;
1356 }
1357
1358
1359 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1360 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1361 java_class->metadata_field_put(_klass_offset, klass);
1362 }
1363
1364
1365 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1366 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1367 Symbol* name = NULL;
1368 bool is_instance = false;
1369 if (is_primitive(java_class)) {
1370 name = vmSymbols::type_signature(primitive_type(java_class));
1371 } else {
1372 Klass* k = as_Klass(java_class);
1373 is_instance = k->is_instance_klass();
1374 name = k->name();
1375 }
1376 if (name == NULL) {
1377 st->print("<null>");
1378 return;
1379 }
1380 if (is_instance) st->print("L");
1381 st->write((char*) name->base(), (int) name->utf8_length());
1382 if (is_instance) st->print(";");
1383 }
1384
1385 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
1386 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1387 Symbol* name;
1388 if (is_primitive(java_class)) {
1389 name = vmSymbols::type_signature(primitive_type(java_class));
1390 // Because this can create a new symbol, the caller has to decrement
1391 // the refcount, so make adjustment here and below for symbols returned
1392 // that are not created or incremented due to a successful lookup.
1393 name->increment_refcount();
1394 } else {
1395 Klass* k = as_Klass(java_class);
1396 if (!k->is_instance_klass()) {
1397 name = k->name();
1398 name->increment_refcount();
1399 } else {
1400 ResourceMark rm;
1401 const char* sigstr = k->signature_name();
1402 int siglen = (int) strlen(sigstr);
1403 if (!intern_if_not_found) {
1404 name = SymbolTable::probe(sigstr, siglen);
1405 } else {
1406 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
1407 }
1408 }
1409 }
1410 return name;
1411 }
1412
1413 // Returns the Java name for this Java mirror (Resource allocated)
1414 // See Klass::external_name().
1415 // For primitive type Java mirrors, its type name is returned.
1416 const char* java_lang_Class::as_external_name(oop java_class) {
1417 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1418 const char* name = NULL;
1419 if (is_primitive(java_class)) {
1420 name = type2name(primitive_type(java_class));
1421 } else {
1422 name = as_Klass(java_class)->external_name();
1423 }
1424 if (name == NULL) {
1425 name = "<null>";
1426 }
1427 return name;
1428 }
1429
1430 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1431 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1432 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1433 return k;
1434 }
1435
1436
1437 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1438 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1439 java_class->release_metadata_field_put(_array_klass_offset, klass);
1440 }
1441
1442
1443 bool java_lang_Class::is_primitive(oop java_class) {
1444 // should assert:
1445 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1446 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
1447
1448 #ifdef ASSERT
1449 if (is_primitive) {
1450 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1451 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
1452 "Should be either the T_VOID primitive or a java primitive");
1453 }
1454 #endif
1455
1456 return is_primitive;
1457 }
1458
1459
1460 BasicType java_lang_Class::primitive_type(oop java_class) {
1461 assert(java_lang_Class::is_primitive(java_class), "just checking");
1462 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1463 BasicType type = T_VOID;
1464 if (ak != NULL) {
1465 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1466 type = ArrayKlass::cast(ak)->element_type();
1467 } else {
1468 assert(oopDesc::equals(java_class, Universe::void_mirror()), "only valid non-array primitive");
1469 }
1470 assert(oopDesc::equals(Universe::java_mirror(type), java_class), "must be consistent");
1471 return type;
1472 }
1473
1474 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1475 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1476 if (is_primitive(java_class)) {
1477 if (reference_klass != NULL)
1478 (*reference_klass) = NULL;
1479 return primitive_type(java_class);
1480 } else {
1481 if (reference_klass != NULL)
1482 (*reference_klass) = as_Klass(java_class);
1483 return T_OBJECT;
1484 }
1485 }
1486
1487
1488 oop java_lang_Class::primitive_mirror(BasicType t) {
1489 oop mirror = Universe::java_mirror(t);
1490 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1491 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1492 return mirror;
1493 }
1494
1495 bool java_lang_Class::offsets_computed = false;
1496 int java_lang_Class::classRedefinedCount_offset = -1;
1497
1498 #define CLASS_FIELDS_DO(macro) \
1499 macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false) ; \
1500 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1501 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1502 macro(_module_offset, k, "module", module_signature, false)
1503
1504 void java_lang_Class::compute_offsets() {
1505 if (offsets_computed) {
1506 return;
1507 }
1508
1509 offsets_computed = true;
1510
1511 InstanceKlass* k = SystemDictionary::Class_klass();
1512 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1513
1514 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1515 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1516 // GC treats them the same.
1517 _init_lock_offset = _component_mirror_offset;
1518
1519 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1520 }
1521
1522 #if INCLUDE_CDS
1523 void java_lang_Class::serialize(SerializeClosure* f) {
1524 f->do_u4((u4*)&offsets_computed);
1525 f->do_u4((u4*)&_init_lock_offset);
1526
1527 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1528
1529 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1530 }
1531 #endif
1532
1533 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1534 if (classRedefinedCount_offset == -1) {
1535 // If we don't have an offset for it then just return -1 as a marker.
1536 return -1;
1537 }
1538
1539 return the_class_mirror->int_field(classRedefinedCount_offset);
1540 }
1541
1542 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1543 if (classRedefinedCount_offset == -1) {
1544 // If we don't have an offset for it then nothing to set.
1545 return;
1546 }
1547
1548 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1549 }
1550
1551
1552 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1553 // platform thread structure, and a eetop offset which was used for thread
1554 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1555 // merged, so in the HotSpot VM we just use the eetop field for the thread
1556 // instead of the privateInfo_offset.
1557 //
1558 // Note: The stackSize field is only present starting in 1.4.
1559
1560 int java_lang_Thread::_name_offset = 0;
1561 int java_lang_Thread::_group_offset = 0;
1562 int java_lang_Thread::_contextClassLoader_offset = 0;
1563 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1564 int java_lang_Thread::_priority_offset = 0;
1565 int java_lang_Thread::_eetop_offset = 0;
1566 int java_lang_Thread::_daemon_offset = 0;
1567 int java_lang_Thread::_stillborn_offset = 0;
1568 int java_lang_Thread::_stackSize_offset = 0;
1569 int java_lang_Thread::_tid_offset = 0;
1570 int java_lang_Thread::_thread_status_offset = 0;
1571 int java_lang_Thread::_park_blocker_offset = 0;
1572 int java_lang_Thread::_park_event_offset = 0 ;
1573
1574 #define THREAD_FIELDS_DO(macro) \
1575 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1576 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1577 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1578 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1579 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1580 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1581 macro(_eetop_offset, k, "eetop", long_signature, false); \
1582 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1583 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1584 macro(_tid_offset, k, "tid", long_signature, false); \
1585 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1586 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1587 macro(_park_event_offset, k, "nativeParkEventPointer", long_signature, false)
1588
1589 void java_lang_Thread::compute_offsets() {
1590 assert(_group_offset == 0, "offsets should be initialized only once");
1591
1592 InstanceKlass* k = SystemDictionary::Thread_klass();
1593 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1594 }
1595
1596 #if INCLUDE_CDS
1597 void java_lang_Thread::serialize(SerializeClosure* f) {
1598 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1599 }
1600 #endif
1601
1602 JavaThread* java_lang_Thread::thread(oop java_thread) {
1603 return (JavaThread*)java_thread->address_field(_eetop_offset);
1604 }
1605
1606
1607 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1608 java_thread->address_field_put(_eetop_offset, (address)thread);
1609 }
1610
1611
1612 oop java_lang_Thread::name(oop java_thread) {
1613 return java_thread->obj_field(_name_offset);
1614 }
1615
1616
1617 void java_lang_Thread::set_name(oop java_thread, oop name) {
1618 java_thread->obj_field_put(_name_offset, name);
1619 }
1620
1621
1622 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1623 return (ThreadPriority)java_thread->int_field(_priority_offset);
1624 }
1625
1626
1627 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1628 java_thread->int_field_put(_priority_offset, priority);
1629 }
1630
1631
1632 oop java_lang_Thread::threadGroup(oop java_thread) {
1633 return java_thread->obj_field(_group_offset);
1634 }
1635
1636
1637 bool java_lang_Thread::is_stillborn(oop java_thread) {
1638 return java_thread->bool_field(_stillborn_offset) != 0;
1639 }
1640
1641
1642 // We never have reason to turn the stillborn bit off
1643 void java_lang_Thread::set_stillborn(oop java_thread) {
1644 java_thread->bool_field_put(_stillborn_offset, true);
1645 }
1646
1647
1648 bool java_lang_Thread::is_alive(oop java_thread) {
1649 JavaThread* thr = java_lang_Thread::thread(java_thread);
1650 return (thr != NULL);
1651 }
1652
1653
1654 bool java_lang_Thread::is_daemon(oop java_thread) {
1655 return java_thread->bool_field(_daemon_offset) != 0;
1656 }
1657
1658
1659 void java_lang_Thread::set_daemon(oop java_thread) {
1660 java_thread->bool_field_put(_daemon_offset, true);
1661 }
1662
1663 oop java_lang_Thread::context_class_loader(oop java_thread) {
1664 return java_thread->obj_field(_contextClassLoader_offset);
1665 }
1666
1667 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1668 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1669 }
1670
1671
1672 jlong java_lang_Thread::stackSize(oop java_thread) {
1673 if (_stackSize_offset > 0) {
1674 return java_thread->long_field(_stackSize_offset);
1675 } else {
1676 return 0;
1677 }
1678 }
1679
1680 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1681 void java_lang_Thread::set_thread_status(oop java_thread,
1682 java_lang_Thread::ThreadStatus status) {
1683 // The threadStatus is only present starting in 1.5
1684 if (_thread_status_offset > 0) {
1685 java_thread->int_field_put(_thread_status_offset, status);
1686 }
1687 }
1688
1689 // Read thread status value from threadStatus field in java.lang.Thread java class.
1690 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1691 // Make sure the caller is operating on behalf of the VM or is
1692 // running VM code (state == _thread_in_vm).
1693 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1694 JavaThread::current()->thread_state() == _thread_in_vm,
1695 "Java Thread is not running in vm");
1696 // The threadStatus is only present starting in 1.5
1697 if (_thread_status_offset > 0) {
1698 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1699 } else {
1700 // All we can easily figure out is if it is alive, but that is
1701 // enough info for a valid unknown status.
1702 // These aren't restricted to valid set ThreadStatus values, so
1703 // use JVMTI values and cast.
1704 JavaThread* thr = java_lang_Thread::thread(java_thread);
1705 if (thr == NULL) {
1706 // the thread hasn't run yet or is in the process of exiting
1707 return NEW;
1708 }
1709 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1710 }
1711 }
1712
1713
1714 jlong java_lang_Thread::thread_id(oop java_thread) {
1715 // The thread ID field is only present starting in 1.5
1716 if (_tid_offset > 0) {
1717 return java_thread->long_field(_tid_offset);
1718 } else {
1719 return 0;
1720 }
1721 }
1722
1723 oop java_lang_Thread::park_blocker(oop java_thread) {
1724 assert(JDK_Version::current().supports_thread_park_blocker() &&
1725 _park_blocker_offset != 0, "Must support parkBlocker field");
1726
1727 if (_park_blocker_offset > 0) {
1728 return java_thread->obj_field(_park_blocker_offset);
1729 }
1730
1731 return NULL;
1732 }
1733
1734 jlong java_lang_Thread::park_event(oop java_thread) {
1735 if (_park_event_offset > 0) {
1736 return java_thread->long_field(_park_event_offset);
1737 }
1738 return 0;
1739 }
1740
1741 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1742 if (_park_event_offset > 0) {
1743 java_thread->long_field_put(_park_event_offset, ptr);
1744 return true;
1745 }
1746 return false;
1747 }
1748
1749
1750 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1751 assert(_thread_status_offset != 0, "Must have thread status");
1752 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1753 switch (status) {
1754 case NEW : return "NEW";
1755 case RUNNABLE : return "RUNNABLE";
1756 case SLEEPING : return "TIMED_WAITING (sleeping)";
1757 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1758 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1759 case PARKED : return "WAITING (parking)";
1760 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1761 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1762 case TERMINATED : return "TERMINATED";
1763 default : return "UNKNOWN";
1764 };
1765 }
1766 int java_lang_ThreadGroup::_parent_offset = 0;
1767 int java_lang_ThreadGroup::_name_offset = 0;
1768 int java_lang_ThreadGroup::_threads_offset = 0;
1769 int java_lang_ThreadGroup::_groups_offset = 0;
1770 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1771 int java_lang_ThreadGroup::_destroyed_offset = 0;
1772 int java_lang_ThreadGroup::_daemon_offset = 0;
1773 int java_lang_ThreadGroup::_nthreads_offset = 0;
1774 int java_lang_ThreadGroup::_ngroups_offset = 0;
1775
1776 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1777 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1778 return java_thread_group->obj_field(_parent_offset);
1779 }
1780
1781 // ("name as oop" accessor is not necessary)
1782
1783 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1784 oop name = java_thread_group->obj_field(_name_offset);
1785 // ThreadGroup.name can be null
1786 if (name != NULL) {
1787 return java_lang_String::as_utf8_string(name);
1788 }
1789 return NULL;
1790 }
1791
1792 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1793 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1794 return java_thread_group->int_field(_nthreads_offset);
1795 }
1796
1797 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1798 oop threads = java_thread_group->obj_field(_threads_offset);
1799 assert(threads != NULL, "threadgroups should have threads");
1800 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1801 return objArrayOop(threads);
1802 }
1803
1804 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1805 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1806 return java_thread_group->int_field(_ngroups_offset);
1807 }
1808
1809 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1810 oop groups = java_thread_group->obj_field(_groups_offset);
1811 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1812 return objArrayOop(groups);
1813 }
1814
1815 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1816 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1817 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1818 }
1819
1820 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1821 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1822 return java_thread_group->bool_field(_destroyed_offset) != 0;
1823 }
1824
1825 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1826 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1827 return java_thread_group->bool_field(_daemon_offset) != 0;
1828 }
1829
1830 #define THREADGROUP_FIELDS_DO(macro) \
1831 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1832 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1833 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1834 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1835 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1836 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1837 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1838 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1839 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1840
1841 void java_lang_ThreadGroup::compute_offsets() {
1842 assert(_parent_offset == 0, "offsets should be initialized only once");
1843
1844 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1845 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1846 }
1847
1848 #if INCLUDE_CDS
1849 void java_lang_ThreadGroup::serialize(SerializeClosure* f) {
1850 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1851 }
1852 #endif
1853
1854 #define THROWABLE_FIELDS_DO(macro) \
1855 macro(backtrace_offset, k, "backtrace", object_signature, false); \
1856 macro(detailMessage_offset, k, "detailMessage", string_signature, false); \
1857 macro(stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1858 macro(depth_offset, k, "depth", int_signature, false); \
1859 macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1860
1861 void java_lang_Throwable::compute_offsets() {
1862 InstanceKlass* k = SystemDictionary::Throwable_klass();
1863 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1864 }
1865
1866 #if INCLUDE_CDS
1867 void java_lang_Throwable::serialize(SerializeClosure* f) {
1868 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1869 }
1870 #endif
1871
1872 oop java_lang_Throwable::unassigned_stacktrace() {
1873 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1874 oop base = ik->static_field_base_raw();
1875 return base->obj_field(static_unassigned_stacktrace_offset);
1876 }
1877
1878 oop java_lang_Throwable::backtrace(oop throwable) {
1879 return throwable->obj_field_acquire(backtrace_offset);
1880 }
1881
1882
1883 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1884 throwable->release_obj_field_put(backtrace_offset, value);
1885 }
1886
1887 int java_lang_Throwable::depth(oop throwable) {
1888 return throwable->int_field(depth_offset);
1889 }
1890
1891 void java_lang_Throwable::set_depth(oop throwable, int value) {
1892 throwable->int_field_put(depth_offset, value);
1893 }
1894
1895 oop java_lang_Throwable::message(oop throwable) {
1896 return throwable->obj_field(detailMessage_offset);
1897 }
1898
1899
1900 // Return Symbol for detailed_message or NULL
1901 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1902 PRESERVE_EXCEPTION_MARK; // Keep original exception
1903 oop detailed_message = java_lang_Throwable::message(throwable);
1904 if (detailed_message != NULL) {
1905 return java_lang_String::as_symbol(detailed_message, THREAD);
1906 }
1907 return NULL;
1908 }
1909
1910 void java_lang_Throwable::set_message(oop throwable, oop value) {
1911 throwable->obj_field_put(detailMessage_offset, value);
1912 }
1913
1914
1915 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1916 throwable->obj_field_put(stackTrace_offset, st_element_array);
1917 }
1918
1919 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1920 set_stacktrace(throwable, NULL);
1921 }
1922
1923
1924 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1925 ResourceMark rm;
1926 Klass* k = throwable->klass();
1927 assert(k != NULL, "just checking");
1928 st->print("%s", k->external_name());
1929 oop msg = message(throwable);
1930 if (msg != NULL) {
1931 st->print(": %s", java_lang_String::as_utf8_string(msg));
1932 }
1933 }
1934
1935 // After this many redefines, the stack trace is unreliable.
1936 const int MAX_VERSION = USHRT_MAX;
1937
1938 static inline bool version_matches(Method* method, int version) {
1939 assert(version < MAX_VERSION, "version is too big");
1940 return method != NULL && (method->constants()->version() == version);
1941 }
1942
1943
1944 // This class provides a simple wrapper over the internal structure of
1945 // exception backtrace to insulate users of the backtrace from needing
1946 // to know what it looks like.
1947 class BacktraceBuilder: public StackObj {
1948 friend class BacktraceIterator;
1949 private:
1950 Handle _backtrace;
1951 objArrayOop _head;
1952 typeArrayOop _methods;
1953 typeArrayOop _bcis;
1954 objArrayOop _mirrors;
1955 typeArrayOop _names; // needed to insulate method name against redefinition
1956 int _index;
1957 NoSafepointVerifier _nsv;
1958
1959 enum {
1960 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1961 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1962 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1963 trace_names_offset = java_lang_Throwable::trace_names_offset,
1964 trace_next_offset = java_lang_Throwable::trace_next_offset,
1965 trace_size = java_lang_Throwable::trace_size,
1966 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1967 };
1968
1969 // get info out of chunks
1970 static typeArrayOop get_methods(objArrayHandle chunk) {
1971 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1972 assert(methods != NULL, "method array should be initialized in backtrace");
1973 return methods;
1974 }
1975 static typeArrayOop get_bcis(objArrayHandle chunk) {
1976 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1977 assert(bcis != NULL, "bci array should be initialized in backtrace");
1978 return bcis;
1979 }
1980 static objArrayOop get_mirrors(objArrayHandle chunk) {
1981 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1982 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1983 return mirrors;
1984 }
1985 static typeArrayOop get_names(objArrayHandle chunk) {
1986 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
1987 assert(names != NULL, "names array should be initialized in backtrace");
1988 return names;
1989 }
1990
1991 public:
1992
1993 // constructor for new backtrace
1994 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _names(NULL) {
1995 expand(CHECK);
1996 _backtrace = Handle(THREAD, _head);
1997 _index = 0;
1998 }
1999
2000 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2001 _methods = get_methods(backtrace);
2002 _bcis = get_bcis(backtrace);
2003 _mirrors = get_mirrors(backtrace);
2004 _names = get_names(backtrace);
2005 assert(_methods->length() == _bcis->length() &&
2006 _methods->length() == _mirrors->length() &&
2007 _mirrors->length() == _names->length(),
2008 "method and source information arrays should match");
2009
2010 // head is the preallocated backtrace
2011 _head = backtrace();
2012 _backtrace = Handle(thread, _head);
2013 _index = 0;
2014 }
2015
2016 void expand(TRAPS) {
2017 objArrayHandle old_head(THREAD, _head);
2018 PauseNoSafepointVerifier pnsv(&_nsv);
2019
2020 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2021 objArrayHandle new_head(THREAD, head);
2022
2023 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2024 typeArrayHandle new_methods(THREAD, methods);
2025
2026 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2027 typeArrayHandle new_bcis(THREAD, bcis);
2028
2029 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2030 objArrayHandle new_mirrors(THREAD, mirrors);
2031
2032 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2033 typeArrayHandle new_names(THREAD, names);
2034
2035 if (!old_head.is_null()) {
2036 old_head->obj_at_put(trace_next_offset, new_head());
2037 }
2038 new_head->obj_at_put(trace_methods_offset, new_methods());
2039 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2040 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2041 new_head->obj_at_put(trace_names_offset, new_names());
2042
2043 _head = new_head();
2044 _methods = new_methods();
2045 _bcis = new_bcis();
2046 _mirrors = new_mirrors();
2047 _names = new_names();
2048 _index = 0;
2049 }
2050
2051 oop backtrace() {
2052 return _backtrace();
2053 }
2054
2055 inline void push(Method* method, int bci, TRAPS) {
2056 // Smear the -1 bci to 0 since the array only holds unsigned
2057 // shorts. The later line number lookup would just smear the -1
2058 // to a 0 even if it could be recorded.
2059 if (bci == SynchronizationEntryBCI) bci = 0;
2060
2061 if (_index >= trace_chunk_size) {
2062 methodHandle mhandle(THREAD, method);
2063 expand(CHECK);
2064 method = mhandle();
2065 }
2066
2067 _methods->ushort_at_put(_index, method->orig_method_idnum());
2068 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2069
2070 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2071 // klass owning the symbols alive so their refcounts aren't decremented.
2072 Symbol* name = method->name();
2073 _names->symbol_at_put(_index, name);
2074
2075 // We need to save the mirrors in the backtrace to keep the class
2076 // from being unloaded while we still have this stack trace.
2077 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2078 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2079 _index++;
2080 }
2081
2082 };
2083
2084 struct BacktraceElement : public StackObj {
2085 int _method_id;
2086 int _bci;
2087 int _version;
2088 Symbol* _name;
2089 Handle _mirror;
2090 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2091 _mirror(mirror), _method_id(mid), _version(version), _bci(bci), _name(name) {}
2092 };
2093
2094 class BacktraceIterator : public StackObj {
2095 int _index;
2096 objArrayHandle _result;
2097 objArrayHandle _mirrors;
2098 typeArrayHandle _methods;
2099 typeArrayHandle _bcis;
2100 typeArrayHandle _names;
2101
2102 void init(objArrayHandle result, Thread* thread) {
2103 // Get method id, bci, version and mirror from chunk
2104 _result = result;
2105 if (_result.not_null()) {
2106 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2107 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2108 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2109 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2110 _index = 0;
2111 }
2112 }
2113 public:
2114 BacktraceIterator(objArrayHandle result, Thread* thread) {
2115 init(result, thread);
2116 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2117 }
2118
2119 BacktraceElement next(Thread* thread) {
2120 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2121 _methods->ushort_at(_index),
2122 Backtrace::version_at(_bcis->int_at(_index)),
2123 Backtrace::bci_at(_bcis->int_at(_index)),
2124 _names->symbol_at(_index));
2125 _index++;
2126
2127 if (_index >= java_lang_Throwable::trace_chunk_size) {
2128 int next_offset = java_lang_Throwable::trace_next_offset;
2129 // Get next chunk
2130 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2131 init(result, thread);
2132 }
2133 return e;
2134 }
2135
2136 bool repeat() {
2137 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2138 }
2139 };
2140
2141
2142 // Print stack trace element to resource allocated buffer
2143 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2144 int version, int bci, Symbol* name) {
2145 ResourceMark rm;
2146
2147 // Get strings and string lengths
2148 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2149 const char* klass_name = holder->external_name();
2150 int buf_len = (int)strlen(klass_name);
2151
2152 char* method_name = name->as_C_string();
2153 buf_len += (int)strlen(method_name);
2154
2155 char* source_file_name = NULL;
2156 Symbol* source = Backtrace::get_source_file_name(holder, version);
2157 if (source != NULL) {
2158 source_file_name = source->as_C_string();
2159 buf_len += (int)strlen(source_file_name);
2160 }
2161
2162 char *module_name = NULL, *module_version = NULL;
2163 ModuleEntry* module = holder->module();
2164 if (module->is_named()) {
2165 module_name = module->name()->as_C_string();
2166 buf_len += (int)strlen(module_name);
2167 if (module->version() != NULL) {
2168 module_version = module->version()->as_C_string();
2169 buf_len += (int)strlen(module_version);
2170 }
2171 }
2172
2173 // Allocate temporary buffer with extra space for formatting and line number
2174 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2175
2176 // Print stack trace line in buffer
2177 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2178
2179 // Print module information
2180 if (module_name != NULL) {
2181 if (module_version != NULL) {
2182 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2183 } else {
2184 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2185 }
2186 }
2187
2188 // The method can be NULL if the requested class version is gone
2189 Method* method = holder->method_with_orig_idnum(method_id, version);
2190 if (!version_matches(method, version)) {
2191 strcat(buf, "Redefined)");
2192 } else {
2193 int line_number = Backtrace::get_line_number(method, bci);
2194 if (line_number == -2) {
2195 strcat(buf, "Native Method)");
2196 } else {
2197 if (source_file_name != NULL && (line_number != -1)) {
2198 // Sourcename and linenumber
2199 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2200 } else if (source_file_name != NULL) {
2201 // Just sourcename
2202 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2203 } else {
2204 // Neither sourcename nor linenumber
2205 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2206 }
2207 CompiledMethod* nm = method->code();
2208 if (WizardMode && nm != NULL) {
2209 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2210 }
2211 }
2212 }
2213
2214 st->print_cr("%s", buf);
2215 }
2216
2217 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
2218 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2219 int method_id = method->orig_method_idnum();
2220 int version = method->constants()->version();
2221 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2222 }
2223
2224 /**
2225 * Print the throwable message and its stack trace plus all causes by walking the
2226 * cause chain. The output looks the same as of Throwable.printStackTrace().
2227 */
2228 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2229 // First, print the message.
2230 print(throwable(), st);
2231 st->cr();
2232
2233 // Now print the stack trace.
2234 Thread* THREAD = Thread::current();
2235 while (throwable.not_null()) {
2236 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2237 if (result.is_null()) {
2238 st->print_raw_cr("\t<<no stack trace available>>");
2239 return;
2240 }
2241 BacktraceIterator iter(result, THREAD);
2242
2243 while (iter.repeat()) {
2244 BacktraceElement bte = iter.next(THREAD);
2245 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2246 }
2247 {
2248 // Call getCause() which doesn't necessarily return the _cause field.
2249 EXCEPTION_MARK;
2250 JavaValue cause(T_OBJECT);
2251 JavaCalls::call_virtual(&cause,
2252 throwable,
2253 throwable->klass(),
2254 vmSymbols::getCause_name(),
2255 vmSymbols::void_throwable_signature(),
2256 THREAD);
2257 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2258 if (HAS_PENDING_EXCEPTION) {
2259 CLEAR_PENDING_EXCEPTION;
2260 throwable = Handle();
2261 } else {
2262 throwable = Handle(THREAD, (oop) cause.get_jobject());
2263 if (throwable.not_null()) {
2264 st->print("Caused by: ");
2265 print(throwable(), st);
2266 st->cr();
2267 }
2268 }
2269 }
2270 }
2271 }
2272
2273 /**
2274 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2275 */
2276 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2277 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2278 JavaValue result(T_VOID);
2279 JavaCalls::call_virtual(&result,
2280 throwable,
2281 SystemDictionary::Throwable_klass(),
2282 vmSymbols::printStackTrace_name(),
2283 vmSymbols::void_method_signature(),
2284 THREAD);
2285 }
2286
2287 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2288 if (!StackTraceInThrowable) return;
2289 ResourceMark rm(THREAD);
2290
2291 // Start out by clearing the backtrace for this object, in case the VM
2292 // runs out of memory while allocating the stack trace
2293 set_backtrace(throwable(), NULL);
2294 // Clear lazily constructed Java level stacktrace if refilling occurs
2295 // This is unnecessary in 1.7+ but harmless
2296 clear_stacktrace(throwable());
2297
2298 int max_depth = MaxJavaStackTraceDepth;
2299 JavaThread* thread = (JavaThread*)THREAD;
2300
2301 BacktraceBuilder bt(CHECK);
2302
2303 // If there is no Java frame just return the method that was being called
2304 // with bci 0
2305 if (!thread->has_last_Java_frame()) {
2306 if (max_depth >= 1 && method() != NULL) {
2307 bt.push(method(), 0, CHECK);
2308 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2309 set_depth(throwable(), 1);
2310 set_backtrace(throwable(), bt.backtrace());
2311 }
2312 return;
2313 }
2314
2315 // Instead of using vframe directly, this version of fill_in_stack_trace
2316 // basically handles everything by hand. This significantly improved the
2317 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2318 // See bug 6333838 for more details.
2319 // The "ASSERT" here is to verify this method generates the exactly same stack
2320 // trace as utilizing vframe.
2321 #ifdef ASSERT
2322 vframeStream st(thread);
2323 methodHandle st_method(THREAD, st.method());
2324 #endif
2325 int total_count = 0;
2326 RegisterMap map(thread, false);
2327 int decode_offset = 0;
2328 CompiledMethod* nm = NULL;
2329 bool skip_fillInStackTrace_check = false;
2330 bool skip_throwableInit_check = false;
2331 bool skip_hidden = !ShowHiddenFrames;
2332
2333 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2334 Method* method = NULL;
2335 int bci = 0;
2336
2337 // Compiled java method case.
2338 if (decode_offset != 0) {
2339 DebugInfoReadStream stream(nm, decode_offset);
2340 decode_offset = stream.read_int();
2341 method = (Method*)nm->metadata_at(stream.read_int());
2342 bci = stream.read_bci();
2343 } else {
2344 if (fr.is_first_frame()) break;
2345 address pc = fr.pc();
2346 if (fr.is_interpreted_frame()) {
2347 address bcp = fr.interpreter_frame_bcp();
2348 method = fr.interpreter_frame_method();
2349 bci = method->bci_from(bcp);
2350 fr = fr.sender(&map);
2351 } else {
2352 CodeBlob* cb = fr.cb();
2353 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2354 // but non nmethod
2355 fr = fr.sender(&map);
2356 if (cb == NULL || !cb->is_compiled()) {
2357 continue;
2358 }
2359 nm = cb->as_compiled_method();
2360 if (nm->method()->is_native()) {
2361 method = nm->method();
2362 bci = 0;
2363 } else {
2364 PcDesc* pd = nm->pc_desc_at(pc);
2365 decode_offset = pd->scope_decode_offset();
2366 // if decode_offset is not equal to 0, it will execute the
2367 // "compiled java method case" at the beginning of the loop.
2368 continue;
2369 }
2370 }
2371 }
2372 #ifdef ASSERT
2373 assert(st_method() == method && st.bci() == bci,
2374 "Wrong stack trace");
2375 st.next();
2376 // vframeStream::method isn't GC-safe so store off a copy
2377 // of the Method* in case we GC.
2378 if (!st.at_end()) {
2379 st_method = st.method();
2380 }
2381 #endif
2382
2383 // the format of the stacktrace will be:
2384 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2385 // - 0 or more <init> methods for the exception class (skipped)
2386 // - rest of the stack
2387
2388 if (!skip_fillInStackTrace_check) {
2389 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2390 throwable->is_a(method->method_holder())) {
2391 continue;
2392 }
2393 else {
2394 skip_fillInStackTrace_check = true; // gone past them all
2395 }
2396 }
2397 if (!skip_throwableInit_check) {
2398 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2399
2400 // skip <init> methods of the exception class and superclasses
2401 // This is simlar to classic VM.
2402 if (method->name() == vmSymbols::object_initializer_name() &&
2403 throwable->is_a(method->method_holder())) {
2404 continue;
2405 } else {
2406 // there are none or we've seen them all - either way stop checking
2407 skip_throwableInit_check = true;
2408 }
2409 }
2410 if (method->is_hidden()) {
2411 if (skip_hidden) continue;
2412 }
2413 bt.push(method, bci, CHECK);
2414 total_count++;
2415 }
2416
2417 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2418
2419 // Put completed stack trace into throwable object
2420 set_backtrace(throwable(), bt.backtrace());
2421 set_depth(throwable(), total_count);
2422 }
2423
2424 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2425 // No-op if stack trace is disabled
2426 if (!StackTraceInThrowable) {
2427 return;
2428 }
2429
2430 // Disable stack traces for some preallocated out of memory errors
2431 if (!Universe::should_fill_in_stack_trace(throwable)) {
2432 return;
2433 }
2434
2435 PRESERVE_EXCEPTION_MARK;
2436
2437 JavaThread* thread = JavaThread::active();
2438 fill_in_stack_trace(throwable, method, thread);
2439 // ignore exceptions thrown during stack trace filling
2440 CLEAR_PENDING_EXCEPTION;
2441 }
2442
2443 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2444 // Allocate stack trace - backtrace is created but not filled in
2445
2446 // No-op if stack trace is disabled
2447 if (!StackTraceInThrowable) return;
2448 BacktraceBuilder bt(CHECK); // creates a backtrace
2449 set_backtrace(throwable(), bt.backtrace());
2450 }
2451
2452
2453 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2454 // Fill in stack trace into preallocated backtrace (no GC)
2455
2456 // No-op if stack trace is disabled
2457 if (!StackTraceInThrowable) return;
2458
2459 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2460
2461 JavaThread* THREAD = JavaThread::current();
2462
2463 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2464 assert(backtrace.not_null(), "backtrace should have been preallocated");
2465
2466 ResourceMark rm(THREAD);
2467 vframeStream st(THREAD);
2468
2469 BacktraceBuilder bt(THREAD, backtrace);
2470
2471 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2472 // methods as preallocated errors aren't created by "java" code.
2473
2474 // fill in as much stack trace as possible
2475 int chunk_count = 0;
2476 for (;!st.at_end(); st.next()) {
2477 bt.push(st.method(), st.bci(), CHECK);
2478 chunk_count++;
2479
2480 // Bail-out for deep stacks
2481 if (chunk_count >= trace_chunk_size) break;
2482 }
2483 set_depth(throwable(), chunk_count);
2484 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2485
2486 // We support the Throwable immutability protocol defined for Java 7.
2487 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2488 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2489 }
2490
2491 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2492 objArrayHandle stack_trace_array_h, TRAPS) {
2493
2494 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2495 THROW(vmSymbols::java_lang_NullPointerException());
2496 }
2497
2498 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2499
2500 if (stack_trace_array_h->length() != depth(throwable())) {
2501 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2502 }
2503
2504 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2505 BacktraceIterator iter(result, THREAD);
2506
2507 int index = 0;
2508 while (iter.repeat()) {
2509 BacktraceElement bte = iter.next(THREAD);
2510
2511 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2512
2513 if (stack_trace_element.is_null()) {
2514 THROW(vmSymbols::java_lang_NullPointerException());
2515 }
2516
2517 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2518 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2519
2520 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2521 method,
2522 bte._version,
2523 bte._bci,
2524 bte._name, CHECK);
2525 }
2526 }
2527
2528 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2529 // Allocate java.lang.StackTraceElement instance
2530 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2531 assert(k != NULL, "must be loaded in 1.4+");
2532 if (k->should_be_initialized()) {
2533 k->initialize(CHECK_0);
2534 }
2535
2536 Handle element = k->allocate_instance_handle(CHECK_0);
2537
2538 int version = method->constants()->version();
2539 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
2540 return element();
2541 }
2542
2543 void java_lang_StackTraceElement::fill_in(Handle element,
2544 InstanceKlass* holder, const methodHandle& method,
2545 int version, int bci, Symbol* name, TRAPS) {
2546 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2547
2548 // Fill in class name
2549 ResourceMark rm(THREAD);
2550 const char* str = holder->external_name();
2551 oop classname = StringTable::intern((char*) str, CHECK);
2552 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2553 java_lang_StackTraceElement::set_declaringClassObject(element(), holder->java_mirror());
2554
2555 oop loader = holder->class_loader();
2556 if (loader != NULL) {
2557 oop loader_name = java_lang_ClassLoader::name(loader);
2558 if (loader_name != NULL)
2559 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2560 }
2561
2562 // Fill in method name
2563 oop methodname = StringTable::intern(name, CHECK);
2564 java_lang_StackTraceElement::set_methodName(element(), methodname);
2565
2566 // Fill in module name and version
2567 ModuleEntry* module = holder->module();
2568 if (module->is_named()) {
2569 oop module_name = StringTable::intern(module->name(), CHECK);
2570 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2571 oop module_version;
2572 if (module->version() != NULL) {
2573 module_version = StringTable::intern(module->version(), CHECK);
2574 } else {
2575 module_version = NULL;
2576 }
2577 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2578 }
2579
2580 if (method() == NULL || !version_matches(method(), version)) {
2581 // The method was redefined, accurate line number information isn't available
2582 java_lang_StackTraceElement::set_fileName(element(), NULL);
2583 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2584 } else {
2585 // Fill in source file name and line number.
2586 Symbol* source = Backtrace::get_source_file_name(holder, version);
2587 if (ShowHiddenFrames && source == NULL)
2588 source = vmSymbols::unknown_class_name();
2589 oop filename = StringTable::intern(source, CHECK);
2590 java_lang_StackTraceElement::set_fileName(element(), filename);
2591
2592 int line_number = Backtrace::get_line_number(method, bci);
2593 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2594 }
2595 }
2596
2597 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2598 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2599 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2600 // we should expand MemberName::name when Throwable uses StackTrace
2601 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2602 return method;
2603 }
2604
2605 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2606 // set Method* or mid/cpref
2607 Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2608 InstanceKlass* ik = method->method_holder();
2609 CallInfo info(method(), ik, CHECK);
2610 MethodHandles::init_method_MemberName(mname, info);
2611 // set bci
2612 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2613 // method may be redefined; store the version
2614 int version = method->constants()->version();
2615 assert((jushort)version == version, "version should be short");
2616 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2617 }
2618
2619 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2620 ResourceMark rm(THREAD);
2621 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2622 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2623 InstanceKlass* holder = InstanceKlass::cast(clazz);
2624 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2625
2626 short version = stackFrame->short_field(_version_offset);
2627 short bci = stackFrame->short_field(_bci_offset);
2628 Symbol* name = method->name();
2629 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, name, CHECK);
2630 }
2631
2632 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2633 macro(_memberName_offset, k, "memberName", object_signature, false); \
2634 macro(_bci_offset, k, "bci", short_signature, false)
2635
2636 void java_lang_StackFrameInfo::compute_offsets() {
2637 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2638 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2639 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2640 }
2641
2642 #if INCLUDE_CDS
2643 void java_lang_StackFrameInfo::serialize(SerializeClosure* f) {
2644 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2645 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2646 }
2647 #endif
2648
2649 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2650 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2651 macro(_locals_offset, k, "locals", object_array_signature, false); \
2652 macro(_operands_offset, k, "operands", object_array_signature, false); \
2653 macro(_mode_offset, k, "mode", int_signature, false)
2654
2655 void java_lang_LiveStackFrameInfo::compute_offsets() {
2656 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2657 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2658 }
2659
2660 #if INCLUDE_CDS
2661 void java_lang_LiveStackFrameInfo::serialize(SerializeClosure* f) {
2662 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2663 }
2664 #endif
2665
2666 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2667 macro(override_offset, k, "override", bool_signature, false)
2668
2669 void java_lang_reflect_AccessibleObject::compute_offsets() {
2670 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2671 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2672 }
2673
2674 #if INCLUDE_CDS
2675 void java_lang_reflect_AccessibleObject::serialize(SerializeClosure* f) {
2676 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2677 }
2678 #endif
2679
2680 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2681 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2682 return (jboolean) reflect->bool_field(override_offset);
2683 }
2684
2685 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2686 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2687 reflect->bool_field_put(override_offset, (int) value);
2688 }
2689
2690 #define METHOD_FIELDS_DO(macro) \
2691 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2692 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
2693 macro(returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2694 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2695 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2696 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2697 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2698 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
2699 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
2700 macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
2701 macro##_OPTIONAL(annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature); \
2702 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
2703
2704 void java_lang_reflect_Method::compute_offsets() {
2705 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2706 // The generic signature and annotations fields are only present in 1.5
2707 signature_offset = -1;
2708 annotations_offset = -1;
2709 parameter_annotations_offset = -1;
2710 annotation_default_offset = -1;
2711 type_annotations_offset = -1;
2712 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2713 }
2714
2715 #if INCLUDE_CDS
2716 void java_lang_reflect_Method::serialize(SerializeClosure* f) {
2717 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2718 }
2719 #endif
2720
2721 Handle java_lang_reflect_Method::create(TRAPS) {
2722 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2723 Klass* klass = SystemDictionary::reflect_Method_klass();
2724 // This class is eagerly initialized during VM initialization, since we keep a refence
2725 // to one of the methods
2726 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2727 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2728 }
2729
2730 oop java_lang_reflect_Method::clazz(oop reflect) {
2731 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2732 return reflect->obj_field(clazz_offset);
2733 }
2734
2735 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2736 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2737 reflect->obj_field_put(clazz_offset, value);
2738 }
2739
2740 int java_lang_reflect_Method::slot(oop reflect) {
2741 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2742 return reflect->int_field(slot_offset);
2743 }
2744
2745 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2746 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2747 reflect->int_field_put(slot_offset, value);
2748 }
2749
2750 oop java_lang_reflect_Method::name(oop method) {
2751 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2752 return method->obj_field(name_offset);
2753 }
2754
2755 void java_lang_reflect_Method::set_name(oop method, oop value) {
2756 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2757 method->obj_field_put(name_offset, value);
2758 }
2759
2760 oop java_lang_reflect_Method::return_type(oop method) {
2761 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2762 return method->obj_field(returnType_offset);
2763 }
2764
2765 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2766 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2767 method->obj_field_put(returnType_offset, value);
2768 }
2769
2770 oop java_lang_reflect_Method::parameter_types(oop method) {
2771 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2772 return method->obj_field(parameterTypes_offset);
2773 }
2774
2775 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2776 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2777 method->obj_field_put(parameterTypes_offset, value);
2778 }
2779
2780 oop java_lang_reflect_Method::exception_types(oop method) {
2781 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2782 return method->obj_field(exceptionTypes_offset);
2783 }
2784
2785 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2786 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2787 method->obj_field_put(exceptionTypes_offset, value);
2788 }
2789
2790 int java_lang_reflect_Method::modifiers(oop method) {
2791 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2792 return method->int_field(modifiers_offset);
2793 }
2794
2795 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2796 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2797 method->int_field_put(modifiers_offset, value);
2798 }
2799
2800 bool java_lang_reflect_Method::has_signature_field() {
2801 return (signature_offset >= 0);
2802 }
2803
2804 oop java_lang_reflect_Method::signature(oop method) {
2805 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2806 assert(has_signature_field(), "signature field must be present");
2807 return method->obj_field(signature_offset);
2808 }
2809
2810 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2811 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2812 assert(has_signature_field(), "signature field must be present");
2813 method->obj_field_put(signature_offset, value);
2814 }
2815
2816 bool java_lang_reflect_Method::has_annotations_field() {
2817 return (annotations_offset >= 0);
2818 }
2819
2820 oop java_lang_reflect_Method::annotations(oop method) {
2821 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2822 assert(has_annotations_field(), "annotations field must be present");
2823 return method->obj_field(annotations_offset);
2824 }
2825
2826 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2827 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2828 assert(has_annotations_field(), "annotations field must be present");
2829 method->obj_field_put(annotations_offset, value);
2830 }
2831
2832 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2833 return (parameter_annotations_offset >= 0);
2834 }
2835
2836 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2837 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2838 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2839 return method->obj_field(parameter_annotations_offset);
2840 }
2841
2842 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2843 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2844 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2845 method->obj_field_put(parameter_annotations_offset, value);
2846 }
2847
2848 bool java_lang_reflect_Method::has_annotation_default_field() {
2849 return (annotation_default_offset >= 0);
2850 }
2851
2852 oop java_lang_reflect_Method::annotation_default(oop method) {
2853 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2854 assert(has_annotation_default_field(), "annotation default field must be present");
2855 return method->obj_field(annotation_default_offset);
2856 }
2857
2858 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2859 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2860 assert(has_annotation_default_field(), "annotation default field must be present");
2861 method->obj_field_put(annotation_default_offset, value);
2862 }
2863
2864 bool java_lang_reflect_Method::has_type_annotations_field() {
2865 return (type_annotations_offset >= 0);
2866 }
2867
2868 oop java_lang_reflect_Method::type_annotations(oop method) {
2869 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2870 assert(has_type_annotations_field(), "type_annotations field must be present");
2871 return method->obj_field(type_annotations_offset);
2872 }
2873
2874 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2875 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2876 assert(has_type_annotations_field(), "type_annotations field must be present");
2877 method->obj_field_put(type_annotations_offset, value);
2878 }
2879
2880 #define CONSTRUCTOR_FIELDS_DO(macro) \
2881 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2882 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2883 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2884 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2885 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2886 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
2887 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
2888 macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
2889 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
2890
2891
2892 void java_lang_reflect_Constructor::compute_offsets() {
2893 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2894 // The generic signature and annotations fields are only present in 1.5
2895 signature_offset = -1;
2896 annotations_offset = -1;
2897 parameter_annotations_offset = -1;
2898 type_annotations_offset = -1;
2899 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2900 }
2901
2902 #if INCLUDE_CDS
2903 void java_lang_reflect_Constructor::serialize(SerializeClosure* f) {
2904 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2905 }
2906 #endif
2907
2908 Handle java_lang_reflect_Constructor::create(TRAPS) {
2909 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2910 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2911 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2912 InstanceKlass* ik = InstanceKlass::cast(k);
2913 // Ensure it is initialized
2914 ik->initialize(CHECK_NH);
2915 return ik->allocate_instance_handle(THREAD);
2916 }
2917
2918 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2919 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2920 return reflect->obj_field(clazz_offset);
2921 }
2922
2923 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2924 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2925 reflect->obj_field_put(clazz_offset, value);
2926 }
2927
2928 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2929 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2930 return constructor->obj_field(parameterTypes_offset);
2931 }
2932
2933 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2934 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2935 constructor->obj_field_put(parameterTypes_offset, value);
2936 }
2937
2938 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2939 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2940 return constructor->obj_field(exceptionTypes_offset);
2941 }
2942
2943 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2944 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2945 constructor->obj_field_put(exceptionTypes_offset, value);
2946 }
2947
2948 int java_lang_reflect_Constructor::slot(oop reflect) {
2949 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2950 return reflect->int_field(slot_offset);
2951 }
2952
2953 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2954 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2955 reflect->int_field_put(slot_offset, value);
2956 }
2957
2958 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2959 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2960 return constructor->int_field(modifiers_offset);
2961 }
2962
2963 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2964 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2965 constructor->int_field_put(modifiers_offset, value);
2966 }
2967
2968 bool java_lang_reflect_Constructor::has_signature_field() {
2969 return (signature_offset >= 0);
2970 }
2971
2972 oop java_lang_reflect_Constructor::signature(oop constructor) {
2973 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2974 assert(has_signature_field(), "signature field must be present");
2975 return constructor->obj_field(signature_offset);
2976 }
2977
2978 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2979 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2980 assert(has_signature_field(), "signature field must be present");
2981 constructor->obj_field_put(signature_offset, value);
2982 }
2983
2984 bool java_lang_reflect_Constructor::has_annotations_field() {
2985 return (annotations_offset >= 0);
2986 }
2987
2988 oop java_lang_reflect_Constructor::annotations(oop constructor) {
2989 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2990 assert(has_annotations_field(), "annotations field must be present");
2991 return constructor->obj_field(annotations_offset);
2992 }
2993
2994 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2995 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2996 assert(has_annotations_field(), "annotations field must be present");
2997 constructor->obj_field_put(annotations_offset, value);
2998 }
2999
3000 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
3001 return (parameter_annotations_offset >= 0);
3002 }
3003
3004 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
3005 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3006 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3007 return method->obj_field(parameter_annotations_offset);
3008 }
3009
3010 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3011 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3012 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3013 method->obj_field_put(parameter_annotations_offset, value);
3014 }
3015
3016 bool java_lang_reflect_Constructor::has_type_annotations_field() {
3017 return (type_annotations_offset >= 0);
3018 }
3019
3020 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
3021 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3022 assert(has_type_annotations_field(), "type_annotations field must be present");
3023 return constructor->obj_field(type_annotations_offset);
3024 }
3025
3026 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
3027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3028 assert(has_type_annotations_field(), "type_annotations field must be present");
3029 constructor->obj_field_put(type_annotations_offset, value);
3030 }
3031
3032 #define FIELD_FIELDS_DO(macro) \
3033 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3034 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3035 macro(type_offset, k, vmSymbols::type_name(), class_signature, false); \
3036 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3037 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3038 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
3039 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
3040 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
3041
3042 void java_lang_reflect_Field::compute_offsets() {
3043 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3044 // The generic signature and annotations fields are only present in 1.5
3045 signature_offset = -1;
3046 annotations_offset = -1;
3047 type_annotations_offset = -1;
3048 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3049 }
3050
3051 #if INCLUDE_CDS
3052 void java_lang_reflect_Field::serialize(SerializeClosure* f) {
3053 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3054 }
3055 #endif
3056
3057 Handle java_lang_reflect_Field::create(TRAPS) {
3058 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3059 Symbol* name = vmSymbols::java_lang_reflect_Field();
3060 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3061 InstanceKlass* ik = InstanceKlass::cast(k);
3062 // Ensure it is initialized
3063 ik->initialize(CHECK_NH);
3064 return ik->allocate_instance_handle(THREAD);
3065 }
3066
3067 oop java_lang_reflect_Field::clazz(oop reflect) {
3068 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3069 return reflect->obj_field(clazz_offset);
3070 }
3071
3072 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3073 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3074 reflect->obj_field_put(clazz_offset, value);
3075 }
3076
3077 oop java_lang_reflect_Field::name(oop field) {
3078 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3079 return field->obj_field(name_offset);
3080 }
3081
3082 void java_lang_reflect_Field::set_name(oop field, oop value) {
3083 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3084 field->obj_field_put(name_offset, value);
3085 }
3086
3087 oop java_lang_reflect_Field::type(oop field) {
3088 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3089 return field->obj_field(type_offset);
3090 }
3091
3092 void java_lang_reflect_Field::set_type(oop field, oop value) {
3093 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3094 field->obj_field_put(type_offset, value);
3095 }
3096
3097 int java_lang_reflect_Field::slot(oop reflect) {
3098 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3099 return reflect->int_field(slot_offset);
3100 }
3101
3102 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3103 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3104 reflect->int_field_put(slot_offset, value);
3105 }
3106
3107 int java_lang_reflect_Field::modifiers(oop field) {
3108 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3109 return field->int_field(modifiers_offset);
3110 }
3111
3112 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3113 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3114 field->int_field_put(modifiers_offset, value);
3115 }
3116
3117 bool java_lang_reflect_Field::has_signature_field() {
3118 return (signature_offset >= 0);
3119 }
3120
3121 oop java_lang_reflect_Field::signature(oop field) {
3122 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3123 assert(has_signature_field(), "signature field must be present");
3124 return field->obj_field(signature_offset);
3125 }
3126
3127 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3128 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3129 assert(has_signature_field(), "signature field must be present");
3130 field->obj_field_put(signature_offset, value);
3131 }
3132
3133 bool java_lang_reflect_Field::has_annotations_field() {
3134 return (annotations_offset >= 0);
3135 }
3136
3137 oop java_lang_reflect_Field::annotations(oop field) {
3138 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3139 assert(has_annotations_field(), "annotations field must be present");
3140 return field->obj_field(annotations_offset);
3141 }
3142
3143 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3144 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3145 assert(has_annotations_field(), "annotations field must be present");
3146 field->obj_field_put(annotations_offset, value);
3147 }
3148
3149 bool java_lang_reflect_Field::has_type_annotations_field() {
3150 return (type_annotations_offset >= 0);
3151 }
3152
3153 oop java_lang_reflect_Field::type_annotations(oop field) {
3154 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3155 assert(has_type_annotations_field(), "type_annotations field must be present");
3156 return field->obj_field(type_annotations_offset);
3157 }
3158
3159 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
3160 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3161 assert(has_type_annotations_field(), "type_annotations field must be present");
3162 field->obj_field_put(type_annotations_offset, value);
3163 }
3164
3165 #define CONSTANTPOOL_FIELDS_DO(macro) \
3166 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3167
3168 void reflect_ConstantPool::compute_offsets() {
3169 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3170 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3171 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3172 }
3173
3174 #if INCLUDE_CDS
3175 void reflect_ConstantPool::serialize(SerializeClosure* f) {
3176 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3177 }
3178 #endif
3179
3180 #define PARAMETER_FIELDS_DO(macro) \
3181 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3182 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3183 macro(index_offset, k, vmSymbols::index_name(), int_signature, false); \
3184 macro(executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3185
3186 void java_lang_reflect_Parameter::compute_offsets() {
3187 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3188 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3189 }
3190
3191 #if INCLUDE_CDS
3192 void java_lang_reflect_Parameter::serialize(SerializeClosure* f) {
3193 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3194 }
3195 #endif
3196
3197 Handle java_lang_reflect_Parameter::create(TRAPS) {
3198 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3199 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3200 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3201 InstanceKlass* ik = InstanceKlass::cast(k);
3202 // Ensure it is initialized
3203 ik->initialize(CHECK_NH);
3204 return ik->allocate_instance_handle(THREAD);
3205 }
3206
3207 oop java_lang_reflect_Parameter::name(oop param) {
3208 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3209 return param->obj_field(name_offset);
3210 }
3211
3212 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3213 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3214 param->obj_field_put(name_offset, value);
3215 }
3216
3217 int java_lang_reflect_Parameter::modifiers(oop param) {
3218 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3219 return param->int_field(modifiers_offset);
3220 }
3221
3222 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3223 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3224 param->int_field_put(modifiers_offset, value);
3225 }
3226
3227 int java_lang_reflect_Parameter::index(oop param) {
3228 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3229 return param->int_field(index_offset);
3230 }
3231
3232 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3233 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3234 param->int_field_put(index_offset, value);
3235 }
3236
3237 oop java_lang_reflect_Parameter::executable(oop param) {
3238 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3239 return param->obj_field(executable_offset);
3240 }
3241
3242 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3243 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3244 param->obj_field_put(executable_offset, value);
3245 }
3246
3247
3248 int java_lang_Module::loader_offset;
3249 int java_lang_Module::name_offset;
3250 int java_lang_Module::_module_entry_offset = -1;
3251
3252 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3253 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3254 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3255 vmSymbols::java_lang_module_init_signature(),
3256 loader, module_name, CHECK_NH);
3257 }
3258
3259 #define MODULE_FIELDS_DO(macro) \
3260 macro(loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3261 macro(name_offset, k, vmSymbols::name_name(), string_signature, false)
3262
3263 void java_lang_Module::compute_offsets() {
3264 InstanceKlass* k = SystemDictionary::Module_klass();
3265 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3266 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3267 }
3268
3269 #if INCLUDE_CDS
3270 void java_lang_Module::serialize(SerializeClosure* f) {
3271 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3272 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3273 }
3274 #endif
3275
3276 oop java_lang_Module::loader(oop module) {
3277 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3278 return module->obj_field(loader_offset);
3279 }
3280
3281 void java_lang_Module::set_loader(oop module, oop value) {
3282 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3283 module->obj_field_put(loader_offset, value);
3284 }
3285
3286 oop java_lang_Module::name(oop module) {
3287 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3288 return module->obj_field(name_offset);
3289 }
3290
3291 void java_lang_Module::set_name(oop module, oop value) {
3292 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3293 module->obj_field_put(name_offset, value);
3294 }
3295
3296 ModuleEntry* java_lang_Module::module_entry(oop module) {
3297 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3298 assert(module != NULL, "module can't be null");
3299 assert(oopDesc::is_oop(module), "module must be oop");
3300
3301 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3302 if (module_entry == NULL) {
3303 // If the inject field containing the ModuleEntry* is null then return the
3304 // class loader's unnamed module.
3305 oop loader = java_lang_Module::loader(module);
3306 Handle h_loader = Handle(Thread::current(), loader);
3307 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3308 return loader_cld->unnamed_module();
3309 }
3310 return module_entry;
3311 }
3312
3313 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3314 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3315 assert(module != NULL, "module can't be null");
3316 assert(oopDesc::is_oop(module), "module must be oop");
3317 module->address_field_put(_module_entry_offset, (address)module_entry);
3318 }
3319
3320 Handle reflect_ConstantPool::create(TRAPS) {
3321 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3322 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3323 // Ensure it is initialized
3324 k->initialize(CHECK_NH);
3325 return k->allocate_instance_handle(THREAD);
3326 }
3327
3328
3329 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3330 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3331 oop mirror = value->pool_holder()->java_mirror();
3332 // Save the mirror to get back the constant pool.
3333 reflect->obj_field_put(_oop_offset, mirror);
3334 }
3335
3336 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3337 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3338
3339 oop mirror = reflect->obj_field(_oop_offset);
3340 Klass* k = java_lang_Class::as_Klass(mirror);
3341 assert(k->is_instance_klass(), "Must be");
3342
3343 // Get the constant pool back from the klass. Since class redefinition
3344 // merges the new constant pool into the old, this is essentially the
3345 // same constant pool as the original. If constant pool merging is
3346 // no longer done in the future, this will have to change to save
3347 // the original.
3348 return InstanceKlass::cast(k)->constants();
3349 }
3350
3351 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3352 macro(_base_offset, k, "base", object_signature, false)
3353
3354 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3355 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3356 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3357 }
3358
3359 #if INCLUDE_CDS
3360 void reflect_UnsafeStaticFieldAccessorImpl::serialize(SerializeClosure* f) {
3361 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3362 }
3363 #endif
3364
3365 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3366 Klass* k = SystemDictionary::box_klass(type);
3367 if (k == NULL) return NULL;
3368 InstanceKlass* ik = InstanceKlass::cast(k);
3369 if (!ik->is_initialized()) ik->initialize(CHECK_0);
3370 return ik->allocate_instance(THREAD);
3371 }
3372
3373
3374 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3375 oop box = initialize_and_allocate(type, CHECK_0);
3376 if (box == NULL) return NULL;
3377 switch (type) {
3378 case T_BOOLEAN:
3379 box->bool_field_put(value_offset, value->z);
3380 break;
3381 case T_CHAR:
3382 box->char_field_put(value_offset, value->c);
3383 break;
3384 case T_FLOAT:
3385 box->float_field_put(value_offset, value->f);
3386 break;
3387 case T_DOUBLE:
3388 box->double_field_put(long_value_offset, value->d);
3389 break;
3390 case T_BYTE:
3391 box->byte_field_put(value_offset, value->b);
3392 break;
3393 case T_SHORT:
3394 box->short_field_put(value_offset, value->s);
3395 break;
3396 case T_INT:
3397 box->int_field_put(value_offset, value->i);
3398 break;
3399 case T_LONG:
3400 box->long_field_put(long_value_offset, value->j);
3401 break;
3402 default:
3403 return NULL;
3404 }
3405 return box;
3406 }
3407
3408
3409 BasicType java_lang_boxing_object::basic_type(oop box) {
3410 if (box == NULL) return T_ILLEGAL;
3411 BasicType type = SystemDictionary::box_klass_type(box->klass());
3412 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3413 return T_ILLEGAL;
3414 return type;
3415 }
3416
3417
3418 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3419 BasicType type = SystemDictionary::box_klass_type(box->klass());
3420 switch (type) {
3421 case T_BOOLEAN:
3422 value->z = box->bool_field(value_offset);
3423 break;
3424 case T_CHAR:
3425 value->c = box->char_field(value_offset);
3426 break;
3427 case T_FLOAT:
3428 value->f = box->float_field(value_offset);
3429 break;
3430 case T_DOUBLE:
3431 value->d = box->double_field(long_value_offset);
3432 break;
3433 case T_BYTE:
3434 value->b = box->byte_field(value_offset);
3435 break;
3436 case T_SHORT:
3437 value->s = box->short_field(value_offset);
3438 break;
3439 case T_INT:
3440 value->i = box->int_field(value_offset);
3441 break;
3442 case T_LONG:
3443 value->j = box->long_field(long_value_offset);
3444 break;
3445 default:
3446 return T_ILLEGAL;
3447 } // end switch
3448 return type;
3449 }
3450
3451
3452 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3453 BasicType type = SystemDictionary::box_klass_type(box->klass());
3454 switch (type) {
3455 case T_BOOLEAN:
3456 box->bool_field_put(value_offset, value->z);
3457 break;
3458 case T_CHAR:
3459 box->char_field_put(value_offset, value->c);
3460 break;
3461 case T_FLOAT:
3462 box->float_field_put(value_offset, value->f);
3463 break;
3464 case T_DOUBLE:
3465 box->double_field_put(long_value_offset, value->d);
3466 break;
3467 case T_BYTE:
3468 box->byte_field_put(value_offset, value->b);
3469 break;
3470 case T_SHORT:
3471 box->short_field_put(value_offset, value->s);
3472 break;
3473 case T_INT:
3474 box->int_field_put(value_offset, value->i);
3475 break;
3476 case T_LONG:
3477 box->long_field_put(long_value_offset, value->j);
3478 break;
3479 default:
3480 return T_ILLEGAL;
3481 } // end switch
3482 return type;
3483 }
3484
3485
3486 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3487 switch (type) {
3488 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3489 case T_CHAR: st->print("%d", value->c); break;
3490 case T_BYTE: st->print("%d", value->b); break;
3491 case T_SHORT: st->print("%d", value->s); break;
3492 case T_INT: st->print("%d", value->i); break;
3493 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3494 case T_FLOAT: st->print("%f", value->f); break;
3495 case T_DOUBLE: st->print("%lf", value->d); break;
3496 default: st->print("type %d?", type); break;
3497 }
3498 }
3499
3500 // Support for java_lang_ref_Reference
3501
3502 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3503 assert(obj != NULL, "sanity");
3504 if (offset != java_lang_ref_Reference::referent_offset) {
3505 return false;
3506 }
3507
3508 Klass* k = obj->klass();
3509 if (!k->is_instance_klass()) {
3510 return false;
3511 }
3512
3513 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3514 bool is_reference = ik->reference_type() != REF_NONE;
3515 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3516 return is_reference;
3517 }
3518
3519 // Support for java_lang_ref_SoftReference
3520 //
3521
3522 #define SOFTREFERENCE_FIELDS_DO(macro) \
3523 macro(timestamp_offset, k, "timestamp", long_signature, false); \
3524 macro(static_clock_offset, k, "clock", long_signature, true)
3525
3526 void java_lang_ref_SoftReference::compute_offsets() {
3527 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3528 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3529 }
3530
3531 #if INCLUDE_CDS
3532 void java_lang_ref_SoftReference::serialize(SerializeClosure* f) {
3533 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3534 }
3535 #endif
3536
3537 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3538 return ref->long_field(timestamp_offset);
3539 }
3540
3541 jlong java_lang_ref_SoftReference::clock() {
3542 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3543 oop base = ik->static_field_base_raw();
3544 return base->long_field(static_clock_offset);
3545 }
3546
3547 void java_lang_ref_SoftReference::set_clock(jlong value) {
3548 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3549 oop base = ik->static_field_base_raw();
3550 base->long_field_put(static_clock_offset, value);
3551 }
3552
3553 // Support for java_lang_invoke_DirectMethodHandle
3554
3555 int java_lang_invoke_DirectMethodHandle::_member_offset;
3556
3557 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3558 oop member_name = NULL;
3559 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3560 "a DirectMethodHandle oop is expected");
3561 return dmh->obj_field(member_offset_in_bytes());
3562 }
3563
3564 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3565 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3566
3567 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3568 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3569 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3570 }
3571
3572 #if INCLUDE_CDS
3573 void java_lang_invoke_DirectMethodHandle::serialize(SerializeClosure* f) {
3574 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3575 }
3576 #endif
3577
3578 // Support for java_lang_invoke_MethodHandle
3579
3580 int java_lang_invoke_MethodHandle::_type_offset;
3581 int java_lang_invoke_MethodHandle::_form_offset;
3582
3583 int java_lang_invoke_MemberName::_clazz_offset;
3584 int java_lang_invoke_MemberName::_name_offset;
3585 int java_lang_invoke_MemberName::_type_offset;
3586 int java_lang_invoke_MemberName::_flags_offset;
3587 int java_lang_invoke_MemberName::_method_offset;
3588 int java_lang_invoke_MemberName::_vmindex_offset;
3589
3590 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3591 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3592
3593 int java_lang_invoke_LambdaForm::_vmentry_offset;
3594
3595 #define METHODHANDLE_FIELDS_DO(macro) \
3596 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3597 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3598
3599 void java_lang_invoke_MethodHandle::compute_offsets() {
3600 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3601 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3602 }
3603
3604 #if INCLUDE_CDS
3605 void java_lang_invoke_MethodHandle::serialize(SerializeClosure* f) {
3606 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3607 }
3608 #endif
3609
3610 #define MEMBERNAME_FIELDS_DO(macro) \
3611 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3612 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3613 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3614 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3615 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3616
3617 void java_lang_invoke_MemberName::compute_offsets() {
3618 InstanceKlass* k = SystemDictionary::MemberName_klass();
3619 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3620 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3621 }
3622
3623 #if INCLUDE_CDS
3624 void java_lang_invoke_MemberName::serialize(SerializeClosure* f) {
3625 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3626 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3627 }
3628 #endif
3629
3630 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3631 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3632 assert(k != NULL, "jdk mismatch");
3633 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3634 }
3635
3636 #if INCLUDE_CDS
3637 void java_lang_invoke_ResolvedMethodName::serialize(SerializeClosure* f) {
3638 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3639 }
3640 #endif
3641
3642 #define LAMBDAFORM_FIELDS_DO(macro) \
3643 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3644
3645 void java_lang_invoke_LambdaForm::compute_offsets() {
3646 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3647 assert (k != NULL, "jdk mismatch");
3648 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3649 }
3650
3651 #if INCLUDE_CDS
3652 void java_lang_invoke_LambdaForm::serialize(SerializeClosure* f) {
3653 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3654 }
3655 #endif
3656
3657 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3658 return obj != NULL && is_subclass(obj->klass());
3659 }
3660
3661
3662 oop java_lang_invoke_MethodHandle::type(oop mh) {
3663 return mh->obj_field(_type_offset);
3664 }
3665
3666 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3667 mh->obj_field_put(_type_offset, mtype);
3668 }
3669
3670 oop java_lang_invoke_MethodHandle::form(oop mh) {
3671 assert(_form_offset != 0, "");
3672 return mh->obj_field(_form_offset);
3673 }
3674
3675 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3676 assert(_form_offset != 0, "");
3677 mh->obj_field_put(_form_offset, lform);
3678 }
3679
3680 /// MemberName accessors
3681
3682 oop java_lang_invoke_MemberName::clazz(oop mname) {
3683 assert(is_instance(mname), "wrong type");
3684 return mname->obj_field(_clazz_offset);
3685 }
3686
3687 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3688 assert(is_instance(mname), "wrong type");
3689 mname->obj_field_put(_clazz_offset, clazz);
3690 }
3691
3692 oop java_lang_invoke_MemberName::name(oop mname) {
3693 assert(is_instance(mname), "wrong type");
3694 return mname->obj_field(_name_offset);
3695 }
3696
3697 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3698 assert(is_instance(mname), "wrong type");
3699 mname->obj_field_put(_name_offset, name);
3700 }
3701
3702 oop java_lang_invoke_MemberName::type(oop mname) {
3703 assert(is_instance(mname), "wrong type");
3704 return mname->obj_field(_type_offset);
3705 }
3706
3707 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3708 assert(is_instance(mname), "wrong type");
3709 mname->obj_field_put(_type_offset, type);
3710 }
3711
3712 int java_lang_invoke_MemberName::flags(oop mname) {
3713 assert(is_instance(mname), "wrong type");
3714 return mname->int_field(_flags_offset);
3715 }
3716
3717 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3718 assert(is_instance(mname), "wrong type");
3719 mname->int_field_put(_flags_offset, flags);
3720 }
3721
3722
3723 // Return vmtarget from ResolvedMethodName method field through indirection
3724 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3725 assert(is_instance(mname), "wrong type");
3726 oop method = mname->obj_field(_method_offset);
3727 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3728 }
3729
3730 bool java_lang_invoke_MemberName::is_method(oop mname) {
3731 assert(is_instance(mname), "must be MemberName");
3732 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3733 }
3734
3735 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3736 assert(is_instance(mname), "wrong type");
3737 mname->obj_field_put(_method_offset, resolved_method);
3738 }
3739
3740 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3741 assert(is_instance(mname), "wrong type");
3742 return (intptr_t) mname->address_field(_vmindex_offset);
3743 }
3744
3745 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3746 assert(is_instance(mname), "wrong type");
3747 mname->address_field_put(_vmindex_offset, (address) index);
3748 }
3749
3750
3751 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3752 assert(is_instance(resolved_method), "wrong type");
3753 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3754 assert(m->is_method(), "must be");
3755 return m;
3756 }
3757
3758 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3759 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3760 assert(is_instance(resolved_method), "wrong type");
3761 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3762 }
3763
3764 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3765 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3766 oop resolved_method = ResolvedMethodTable::find_method(m());
3767 if (resolved_method == NULL) {
3768 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3769 if (!k->is_initialized()) {
3770 k->initialize(CHECK_NULL);
3771 }
3772 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3773 new_resolved_method->address_field_put(_vmtarget_offset, (address)m());
3774 // Add a reference to the loader (actually mirror because anonymous classes will not have
3775 // distinct loaders) to ensure the metadata is kept alive.
3776 // This mirror may be different than the one in clazz field.
3777 new_resolved_method->obj_field_put(_vmholder_offset, m->method_holder()->java_mirror());
3778 resolved_method = ResolvedMethodTable::add_method(Handle(THREAD, new_resolved_method));
3779 }
3780 return resolved_method;
3781 }
3782
3783 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3784 assert(is_instance(lform), "wrong type");
3785 return lform->obj_field(_vmentry_offset);
3786 }
3787
3788
3789 // Support for java_lang_invoke_MethodType
3790
3791 int java_lang_invoke_MethodType::_rtype_offset;
3792 int java_lang_invoke_MethodType::_ptypes_offset;
3793
3794 #define METHODTYPE_FIELDS_DO(macro) \
3795 macro(_rtype_offset, k, "rtype", class_signature, false); \
3796 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3797
3798 void java_lang_invoke_MethodType::compute_offsets() {
3799 InstanceKlass* k = SystemDictionary::MethodType_klass();
3800 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3801 }
3802
3803 #if INCLUDE_CDS
3804 void java_lang_invoke_MethodType::serialize(SerializeClosure* f) {
3805 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3806 }
3807 #endif
3808
3809 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3810 st->print("(");
3811 objArrayOop pts = ptypes(mt);
3812 for (int i = 0, limit = pts->length(); i < limit; i++) {
3813 java_lang_Class::print_signature(pts->obj_at(i), st);
3814 }
3815 st->print(")");
3816 java_lang_Class::print_signature(rtype(mt), st);
3817 }
3818
3819 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3820 ResourceMark rm;
3821 stringStream buffer(128);
3822 print_signature(mt, &buffer);
3823 const char* sigstr = buffer.base();
3824 int siglen = (int) buffer.size();
3825 Symbol *name;
3826 if (!intern_if_not_found) {
3827 name = SymbolTable::probe(sigstr, siglen);
3828 } else {
3829 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3830 }
3831 return name;
3832 }
3833
3834 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3835 if (oopDesc::equals(mt1, mt2))
3836 return true;
3837 if (!oopDesc::equals(rtype(mt1), rtype(mt2)))
3838 return false;
3839 if (ptype_count(mt1) != ptype_count(mt2))
3840 return false;
3841 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3842 if (!oopDesc::equals(ptype(mt1, i), ptype(mt2, i)))
3843 return false;
3844 }
3845 return true;
3846 }
3847
3848 oop java_lang_invoke_MethodType::rtype(oop mt) {
3849 assert(is_instance(mt), "must be a MethodType");
3850 return mt->obj_field(_rtype_offset);
3851 }
3852
3853 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3854 assert(is_instance(mt), "must be a MethodType");
3855 return (objArrayOop) mt->obj_field(_ptypes_offset);
3856 }
3857
3858 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3859 return ptypes(mt)->obj_at(idx);
3860 }
3861
3862 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3863 return ptypes(mt)->length();
3864 }
3865
3866 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3867 objArrayOop pts = ptypes(mt);
3868 int count = pts->length();
3869 int slots = 0;
3870 for (int i = 0; i < count; i++) {
3871 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3872 slots += type2size[bt];
3873 }
3874 return slots;
3875 }
3876
3877 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3878 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3879 return type2size[bt];
3880 }
3881
3882
3883 // Support for java_lang_invoke_CallSite
3884
3885 int java_lang_invoke_CallSite::_target_offset;
3886 int java_lang_invoke_CallSite::_context_offset;
3887
3888 #define CALLSITE_FIELDS_DO(macro) \
3889 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
3890 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3891
3892 void java_lang_invoke_CallSite::compute_offsets() {
3893 InstanceKlass* k = SystemDictionary::CallSite_klass();
3894 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3895 }
3896
3897 #if INCLUDE_CDS
3898 void java_lang_invoke_CallSite::serialize(SerializeClosure* f) {
3899 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3900 }
3901 #endif
3902
3903 oop java_lang_invoke_CallSite::context(oop call_site) {
3904 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3905
3906 oop dep_oop = call_site->obj_field(_context_offset);
3907 return dep_oop;
3908 }
3909
3910 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3911
3912 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3913
3914 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3915 InstanceKlass* k = SystemDictionary::Context_klass();
3916 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3917 }
3918
3919 #if INCLUDE_CDS
3920 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize(SerializeClosure* f) {
3921 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3922 }
3923 #endif
3924
3925 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3926 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3927 intptr_t* vmdeps_addr = (intptr_t*)call_site->field_addr(_vmdependencies_offset);
3928 DependencyContext dep_ctx(vmdeps_addr);
3929 return dep_ctx;
3930 }
3931
3932 // Support for java_security_AccessControlContext
3933
3934 int java_security_AccessControlContext::_context_offset = 0;
3935 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3936 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3937 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3938
3939 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
3940 macro(_context_offset, k, "context", protectiondomain_signature, false); \
3941 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
3942 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
3943 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
3944
3945 void java_security_AccessControlContext::compute_offsets() {
3946 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3947 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
3948 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3949 }
3950
3951 #if INCLUDE_CDS
3952 void java_security_AccessControlContext::serialize(SerializeClosure* f) {
3953 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3954 }
3955 #endif
3956
3957 bool java_security_AccessControlContext::is_authorized(Handle context) {
3958 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3959 assert(_isAuthorized_offset != -1, "should be set");
3960 return context->bool_field(_isAuthorized_offset) != 0;
3961 }
3962
3963 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3964 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3965 // Ensure klass is initialized
3966 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3967 // Allocate result
3968 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3969 // Fill in values
3970 result->obj_field_put(_context_offset, context());
3971 result->obj_field_put(_privilegedContext_offset, privileged_context());
3972 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3973 // whitelist AccessControlContexts created by the JVM if present
3974 if (_isAuthorized_offset != -1) {
3975 result->bool_field_put(_isAuthorized_offset, true);
3976 }
3977 return result;
3978 }
3979
3980
3981 // Support for java_lang_ClassLoader
3982
3983 bool java_lang_ClassLoader::offsets_computed = false;
3984 int java_lang_ClassLoader::_loader_data_offset = -1;
3985 int java_lang_ClassLoader::parallelCapable_offset = -1;
3986 int java_lang_ClassLoader::name_offset = -1;
3987 int java_lang_ClassLoader::unnamedModule_offset = -1;
3988
3989 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
3990 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3991 return HeapAccess<>::load_at(loader, _loader_data_offset);
3992 }
3993
3994 ClassLoaderData* java_lang_ClassLoader::cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data) {
3995 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3996 return HeapAccess<>::atomic_cmpxchg_at(new_data, loader, _loader_data_offset, expected_data);
3997 }
3998
3999 #define CLASSLOADER_FIELDS_DO(macro) \
4000 macro(parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4001 macro(name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4002 macro(unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4003 macro(parent_offset, k1, "parent", classloader_signature, false)
4004
4005 void java_lang_ClassLoader::compute_offsets() {
4006 assert(!offsets_computed, "offsets should be initialized only once");
4007 offsets_computed = true;
4008
4009 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4010 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4011
4012 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4013 }
4014
4015 #if INCLUDE_CDS
4016 void java_lang_ClassLoader::serialize(SerializeClosure* f) {
4017 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4018 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4019 }
4020 #endif
4021
4022 oop java_lang_ClassLoader::parent(oop loader) {
4023 assert(is_instance(loader), "loader must be oop");
4024 return loader->obj_field(parent_offset);
4025 }
4026
4027 oop java_lang_ClassLoader::name(oop loader) {
4028 assert(is_instance(loader), "loader must be oop");
4029 return loader->obj_field(name_offset);
4030 }
4031
4032 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4033 assert(is_instance(loader), "loader must be oop");
4034 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4035 oop acl = loader;
4036 debug_only(jint loop_count = 0);
4037 // This loop taken verbatim from ClassLoader.java:
4038 do {
4039 acl = parent(acl);
4040 if (oopDesc::equals(cl, acl)) {
4041 return true;
4042 }
4043 assert(++loop_count > 0, "loop_count overflow");
4044 } while (acl != NULL);
4045 return false;
4046 }
4047
4048 bool java_lang_ClassLoader::is_instance(oop obj) {
4049 return obj != NULL && is_subclass(obj->klass());
4050 }
4051
4052
4053 // For class loader classes, parallelCapable defined
4054 // based on non-null field
4055 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4056 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4057 if (parallelCapable_offset == -1) {
4058 // Default for backward compatibility is false
4059 return false;
4060 }
4061 return (class_loader->obj_field(parallelCapable_offset) != NULL);
4062 }
4063
4064 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4065 // Fix for 4474172; see evaluation for more details
4066 loader = non_reflection_class_loader(loader);
4067
4068 oop cl = SystemDictionary::java_system_loader();
4069 while(cl != NULL) {
4070 if (oopDesc::equals(cl, loader)) return true;
4071 cl = parent(cl);
4072 }
4073 return false;
4074 }
4075
4076 // Return true if this is one of the class loaders associated with
4077 // the generated bytecodes for reflection.
4078 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4079 if (loader != NULL) {
4080 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4081 // This might be null in non-1.4 JDKs
4082 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4083 }
4084 return false;
4085 }
4086
4087 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4088 // See whether this is one of the class loaders associated with
4089 // the generated bytecodes for reflection, and if so, "magically"
4090 // delegate to its parent to prevent class loading from occurring
4091 // in places where applications using reflection didn't expect it.
4092 if (is_reflection_class_loader(loader)) {
4093 return parent(loader);
4094 }
4095 return loader;
4096 }
4097
4098 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4099 assert(is_instance(loader), "loader must be oop");
4100 return loader->obj_field(unnamedModule_offset);
4101 }
4102
4103 // Caller needs ResourceMark.
4104 const char* java_lang_ClassLoader::describe_external(const oop loader) {
4105 if (loader == NULL) {
4106 return "<bootstrap>";
4107 }
4108
4109 bool well_known_loader = SystemDictionary::is_system_class_loader(loader) ||
4110 SystemDictionary::is_platform_class_loader(loader);
4111
4112 const char* name = NULL;
4113 oop nameOop = java_lang_ClassLoader::name(loader);
4114 if (nameOop != NULL) {
4115 name = java_lang_String::as_utf8_string(nameOop);
4116 }
4117 if (name == NULL) {
4118 // Use placeholder for missing name to have fixed message format.
4119 name = "<unnamed>";
4120 }
4121
4122 stringStream ss;
4123 ss.print("\"%s\" (instance of %s", name, loader->klass()->external_name());
4124 if (!well_known_loader) {
4125 const char* parentName = NULL;
4126 oop pl = java_lang_ClassLoader::parent(loader);
4127 if (pl != NULL) {
4128 oop parentNameOop = java_lang_ClassLoader::name(pl);
4129 if (parentNameOop != NULL) {
4130 parentName = java_lang_String::as_utf8_string(parentNameOop);
4131 }
4132 if (parentName == NULL) {
4133 parentName = "<unnamed>";
4134 }
4135 ss.print(", child of \"%s\" %s", parentName, pl->klass()->external_name());
4136 } else {
4137 ss.print(", child of <bootstrap>");
4138 }
4139 }
4140 ss.print(")");
4141
4142 return ss.as_string();
4143 }
4144
4145 // Support for java_lang_System
4146 //
4147 #define SYSTEM_FIELDS_DO(macro) \
4148 macro(static_in_offset, k, "in", input_stream_signature, true); \
4149 macro(static_out_offset, k, "out", print_stream_signature, true); \
4150 macro(static_err_offset, k, "err", print_stream_signature, true); \
4151 macro(static_security_offset, k, "security", security_manager_signature, true)
4152
4153 void java_lang_System::compute_offsets() {
4154 InstanceKlass* k = SystemDictionary::System_klass();
4155 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4156 }
4157
4158 #if INCLUDE_CDS
4159 void java_lang_System::serialize(SerializeClosure* f) {
4160 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4161 }
4162 #endif
4163
4164 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4165 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4166 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4167
4168
4169 bool java_lang_System::has_security_manager() {
4170 InstanceKlass* ik = SystemDictionary::System_klass();
4171 oop base = ik->static_field_base_raw();
4172 return base->obj_field(static_security_offset) != NULL;
4173 }
4174
4175 int java_lang_Class::_klass_offset;
4176 int java_lang_Class::_array_klass_offset;
4177 int java_lang_Class::_oop_size_offset;
4178 int java_lang_Class::_static_oop_field_count_offset;
4179 int java_lang_Class::_class_loader_offset;
4180 int java_lang_Class::_module_offset;
4181 int java_lang_Class::_protection_domain_offset;
4182 int java_lang_Class::_component_mirror_offset;
4183 int java_lang_Class::_init_lock_offset;
4184 int java_lang_Class::_signers_offset;
4185 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4186 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4187 int java_lang_Throwable::backtrace_offset;
4188 int java_lang_Throwable::detailMessage_offset;
4189 int java_lang_Throwable::stackTrace_offset;
4190 int java_lang_Throwable::depth_offset;
4191 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4192 int java_lang_reflect_AccessibleObject::override_offset;
4193 int java_lang_reflect_Method::clazz_offset;
4194 int java_lang_reflect_Method::name_offset;
4195 int java_lang_reflect_Method::returnType_offset;
4196 int java_lang_reflect_Method::parameterTypes_offset;
4197 int java_lang_reflect_Method::exceptionTypes_offset;
4198 int java_lang_reflect_Method::slot_offset;
4199 int java_lang_reflect_Method::modifiers_offset;
4200 int java_lang_reflect_Method::signature_offset;
4201 int java_lang_reflect_Method::annotations_offset;
4202 int java_lang_reflect_Method::parameter_annotations_offset;
4203 int java_lang_reflect_Method::annotation_default_offset;
4204 int java_lang_reflect_Method::type_annotations_offset;
4205 int java_lang_reflect_Constructor::clazz_offset;
4206 int java_lang_reflect_Constructor::parameterTypes_offset;
4207 int java_lang_reflect_Constructor::exceptionTypes_offset;
4208 int java_lang_reflect_Constructor::slot_offset;
4209 int java_lang_reflect_Constructor::modifiers_offset;
4210 int java_lang_reflect_Constructor::signature_offset;
4211 int java_lang_reflect_Constructor::annotations_offset;
4212 int java_lang_reflect_Constructor::parameter_annotations_offset;
4213 int java_lang_reflect_Constructor::type_annotations_offset;
4214 int java_lang_reflect_Field::clazz_offset;
4215 int java_lang_reflect_Field::name_offset;
4216 int java_lang_reflect_Field::type_offset;
4217 int java_lang_reflect_Field::slot_offset;
4218 int java_lang_reflect_Field::modifiers_offset;
4219 int java_lang_reflect_Field::signature_offset;
4220 int java_lang_reflect_Field::annotations_offset;
4221 int java_lang_reflect_Field::type_annotations_offset;
4222 int java_lang_reflect_Parameter::name_offset;
4223 int java_lang_reflect_Parameter::modifiers_offset;
4224 int java_lang_reflect_Parameter::index_offset;
4225 int java_lang_reflect_Parameter::executable_offset;
4226 int java_lang_boxing_object::value_offset;
4227 int java_lang_boxing_object::long_value_offset;
4228 int java_lang_ref_Reference::referent_offset;
4229 int java_lang_ref_Reference::queue_offset;
4230 int java_lang_ref_Reference::next_offset;
4231 int java_lang_ref_Reference::discovered_offset;
4232 int java_lang_ref_SoftReference::timestamp_offset;
4233 int java_lang_ref_SoftReference::static_clock_offset;
4234 int java_lang_ClassLoader::parent_offset;
4235 int java_lang_System::static_in_offset;
4236 int java_lang_System::static_out_offset;
4237 int java_lang_System::static_err_offset;
4238 int java_lang_System::static_security_offset;
4239 int java_lang_StackTraceElement::methodName_offset;
4240 int java_lang_StackTraceElement::fileName_offset;
4241 int java_lang_StackTraceElement::lineNumber_offset;
4242 int java_lang_StackTraceElement::moduleName_offset;
4243 int java_lang_StackTraceElement::moduleVersion_offset;
4244 int java_lang_StackTraceElement::classLoaderName_offset;
4245 int java_lang_StackTraceElement::declaringClass_offset;
4246 int java_lang_StackTraceElement::declaringClassObject_offset;
4247 int java_lang_StackFrameInfo::_memberName_offset;
4248 int java_lang_StackFrameInfo::_bci_offset;
4249 int java_lang_StackFrameInfo::_version_offset;
4250 int java_lang_LiveStackFrameInfo::_monitors_offset;
4251 int java_lang_LiveStackFrameInfo::_locals_offset;
4252 int java_lang_LiveStackFrameInfo::_operands_offset;
4253 int java_lang_LiveStackFrameInfo::_mode_offset;
4254 int java_lang_AssertionStatusDirectives::classes_offset;
4255 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4256 int java_lang_AssertionStatusDirectives::packages_offset;
4257 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4258 int java_lang_AssertionStatusDirectives::deflt_offset;
4259 int java_nio_Buffer::_limit_offset;
4260 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4261 int reflect_ConstantPool::_oop_offset;
4262 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4263
4264 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4265 macro(declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4266 macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4267 macro(moduleName_offset, k, "moduleName", string_signature, false); \
4268 macro(moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4269 macro(declaringClass_offset, k, "declaringClass", string_signature, false); \
4270 macro(methodName_offset, k, "methodName", string_signature, false); \
4271 macro(fileName_offset, k, "fileName", string_signature, false); \
4272 macro(lineNumber_offset, k, "lineNumber", int_signature, false)
4273
4274 // Support for java_lang_StackTraceElement
4275 void java_lang_StackTraceElement::compute_offsets() {
4276 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4277 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4278 }
4279
4280 #if INCLUDE_CDS
4281 void java_lang_StackTraceElement::serialize(SerializeClosure* f) {
4282 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4283 }
4284 #endif
4285
4286 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4287 element->obj_field_put(fileName_offset, value);
4288 }
4289
4290 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4291 element->obj_field_put(declaringClass_offset, value);
4292 }
4293
4294 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4295 element->obj_field_put(methodName_offset, value);
4296 }
4297
4298 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4299 element->int_field_put(lineNumber_offset, value);
4300 }
4301
4302 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4303 element->obj_field_put(moduleName_offset, value);
4304 }
4305
4306 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4307 element->obj_field_put(moduleVersion_offset, value);
4308 }
4309
4310 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4311 element->obj_field_put(classLoaderName_offset, value);
4312 }
4313
4314 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4315 element->obj_field_put(declaringClassObject_offset, value);
4316 }
4317
4318 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4319 element->short_field_put(_version_offset, value);
4320 }
4321
4322 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4323 element->int_field_put(_bci_offset, value);
4324 }
4325
4326 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4327 element->obj_field_put(_monitors_offset, value);
4328 }
4329
4330 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4331 element->obj_field_put(_locals_offset, value);
4332 }
4333
4334 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4335 element->obj_field_put(_operands_offset, value);
4336 }
4337
4338 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4339 element->int_field_put(_mode_offset, value);
4340 }
4341
4342 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4343 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4344 macro(classes_offset, k, "classes", string_array_signature, false); \
4345 macro(classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4346 macro(packages_offset, k, "packages", string_array_signature, false); \
4347 macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4348 macro(deflt_offset, k, "deflt", bool_signature, false)
4349
4350 void java_lang_AssertionStatusDirectives::compute_offsets() {
4351 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4352 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4353 }
4354
4355 #if INCLUDE_CDS
4356 void java_lang_AssertionStatusDirectives::serialize(SerializeClosure* f) {
4357 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4358 }
4359 #endif
4360
4361 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4362 o->obj_field_put(classes_offset, val);
4363 }
4364
4365 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4366 o->obj_field_put(classEnabled_offset, val);
4367 }
4368
4369 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4370 o->obj_field_put(packages_offset, val);
4371 }
4372
4373 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4374 o->obj_field_put(packageEnabled_offset, val);
4375 }
4376
4377 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4378 o->bool_field_put(deflt_offset, val);
4379 }
4380
4381
4382 // Support for intrinsification of java.nio.Buffer.checkIndex
4383 int java_nio_Buffer::limit_offset() {
4384 return _limit_offset;
4385 }
4386
4387 #define BUFFER_FIELDS_DO(macro) \
4388 macro(_limit_offset, k, "limit", int_signature, false)
4389
4390 void java_nio_Buffer::compute_offsets() {
4391 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4392 assert(k != NULL, "must be loaded in 1.4+");
4393 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4394 }
4395
4396 #if INCLUDE_CDS
4397 void java_nio_Buffer::serialize(SerializeClosure* f) {
4398 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4399 }
4400 #endif
4401
4402 #define AOS_FIELDS_DO(macro) \
4403 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4404
4405 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4406 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4407 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4408 }
4409
4410 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4411 assert(_owner_offset != 0, "Must be initialized");
4412 return obj->obj_field(_owner_offset);
4413 }
4414
4415 static int member_offset(int hardcoded_offset) {
4416 return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4417 }
4418
4419 // Compute hard-coded offsets
4420 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4421 // are not available to determine the offset_of_static_fields.
4422 void JavaClasses::compute_hard_coded_offsets() {
4423
4424 // java_lang_boxing_object
4425 java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
4426 java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4427
4428 // java_lang_ref_Reference
4429 java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
4430 java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
4431 java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
4432 java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4433 }
4434
4435
4436 // Compute non-hard-coded field offsets of all the classes in this file
4437 void JavaClasses::compute_offsets() {
4438 if (UseSharedSpaces) {
4439 return; // field offsets are loaded from archive
4440 }
4441
4442 // java_lang_Class::compute_offsets was called earlier in bootstrap
4443 java_lang_System::compute_offsets();
4444 java_lang_ClassLoader::compute_offsets();
4445 java_lang_Throwable::compute_offsets();
4446 java_lang_Thread::compute_offsets();
4447 java_lang_ThreadGroup::compute_offsets();
4448 java_lang_AssertionStatusDirectives::compute_offsets();
4449 java_lang_ref_SoftReference::compute_offsets();
4450 java_lang_invoke_MethodHandle::compute_offsets();
4451 java_lang_invoke_DirectMethodHandle::compute_offsets();
4452 java_lang_invoke_MemberName::compute_offsets();
4453 java_lang_invoke_ResolvedMethodName::compute_offsets();
4454 java_lang_invoke_LambdaForm::compute_offsets();
4455 java_lang_invoke_MethodType::compute_offsets();
4456 java_lang_invoke_CallSite::compute_offsets();
4457 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
4458 java_security_AccessControlContext::compute_offsets();
4459 // Initialize reflection classes. The layouts of these classes
4460 // changed with the new reflection implementation in JDK 1.4, and
4461 // since the Universe doesn't know what JDK version it is until this
4462 // point we defer computation of these offsets until now.
4463 java_lang_reflect_AccessibleObject::compute_offsets();
4464 java_lang_reflect_Method::compute_offsets();
4465 java_lang_reflect_Constructor::compute_offsets();
4466 java_lang_reflect_Field::compute_offsets();
4467 java_nio_Buffer::compute_offsets();
4468 reflect_ConstantPool::compute_offsets();
4469 reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
4470 java_lang_reflect_Parameter::compute_offsets();
4471 java_lang_Module::compute_offsets();
4472 java_lang_StackTraceElement::compute_offsets();
4473 java_lang_StackFrameInfo::compute_offsets();
4474 java_lang_LiveStackFrameInfo::compute_offsets();
4475 java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets();
4476
4477 // generated interpreter code wants to know about the offsets we just computed:
4478 AbstractAssembler::update_delayed_values();
4479 }
4480
4481 #ifndef PRODUCT
4482
4483 // These functions exist to assert the validity of hard-coded field offsets to guard
4484 // against changes in the class files
4485
4486 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4487 EXCEPTION_MARK;
4488 fieldDescriptor fd;
4489 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
4490 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4491 InstanceKlass* ik = InstanceKlass::cast(k);
4492 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
4493 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
4494 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4495 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4496 return false;
4497 }
4498 if (fd.is_static()) {
4499 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4500 return false;
4501 }
4502 if (fd.offset() == hardcoded_offset ) {
4503 return true;
4504 } else {
4505 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4506 klass_name, field_name, hardcoded_offset, fd.offset());
4507 return false;
4508 }
4509 }
4510
4511 // Check the hard-coded field offsets of all the classes in this file
4512
4513 void JavaClasses::check_offsets() {
4514 bool valid = true;
4515
4516 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4517 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4518
4519 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4520 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4521
4522 // Boxed primitive objects (java_lang_boxing_object)
4523
4524 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4525 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4526 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4527 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4528 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4529 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4530 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4531 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4532
4533 // java.lang.ref.Reference
4534
4535 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4536 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4537 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4538 // Fake field
4539 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4540
4541 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4542 }
4543
4544 #endif // PRODUCT
4545
4546 int InjectedField::compute_offset() {
4547 InstanceKlass* ik = InstanceKlass::cast(klass());
4548 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4549 if (!may_be_java && !fs.access_flags().is_internal()) {
4550 // Only look at injected fields
4551 continue;
4552 }
4553 if (fs.name() == name() && fs.signature() == signature()) {
4554 return fs.offset();
4555 }
4556 }
4557 ResourceMark rm;
4558 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)" : "");
4559 #ifndef PRODUCT
4560 ik->print();
4561 tty->print_cr("all fields:");
4562 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4563 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4564 }
4565 #endif //PRODUCT
4566 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
4567 return -1;
4568 }
4569
4570 void javaClasses_init() {
4571 JavaClasses::compute_offsets();
4572 JavaClasses::check_offsets();
4573 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4574 }