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 #if INCLUDE_JVMCI
67 #include "jvmci/jvmciJavaClasses.hpp"
68 #endif
69
70 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
71 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
72
73 #if INCLUDE_CDS
74 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
75 f->do_u4((u4*)&_##name##_offset);
76 #endif
77
78 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
79 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
80
81 InjectedField JavaClasses::_injected_fields[] = {
82 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
83 };
84
85 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
86 return _injected_fields[id].compute_offset();
87 }
88
89
90 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
91 *field_count = 0;
92
93 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
94 if (sid == vmSymbols::NO_SID) {
95 // Only well known classes can inject fields
96 return NULL;
97 }
98
99 int count = 0;
100 int start = -1;
101
102 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
103 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
104 count++; \
105 if (start == -1) start = klass##_##name##_enum; \
106 }
107 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
108 #undef LOOKUP_INJECTED_FIELD
109
110 if (start != -1) {
111 *field_count = count;
112 return _injected_fields + start;
113 }
114 return NULL;
115 }
116
117
118 // Helpful routine for computing field offsets at run time rather than hardcoding them
119 // Finds local fields only, including static fields. Static field offsets are from the
120 // beginning of the mirror.
121 static void compute_offset(int &dest_offset,
122 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
123 bool is_static = false) {
124 fieldDescriptor fd;
125 if (ik == NULL) {
126 ResourceMark rm;
127 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
128 vm_exit_during_initialization("Invalid layout of preloaded class");
129 }
130
131 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
132 ResourceMark rm;
133 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
134 name_symbol->as_C_string(), signature_symbol->as_C_string());
135 #ifndef PRODUCT
136 // Prints all fields and offsets
137 Log(class) lt;
138 LogStream ls(lt.error());
139 ik->print_on(&ls);
140 #endif //PRODUCT
141 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
142 }
143 dest_offset = fd.offset();
144 }
145
146 // Overloading to pass name as a string.
147 static void compute_offset(int& dest_offset, InstanceKlass* ik,
148 const char* name_string, Symbol* signature_symbol,
149 bool is_static = false) {
150 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
151 if (name == NULL) {
152 ResourceMark rm;
153 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
154 vm_exit_during_initialization("Invalid layout of preloaded class", ik->external_name());
155 }
156 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
157 }
158
159 // Same as above but for "optional" offsets that might not be present in certain JDK versions
160 // Old versions should be cleaned out since Hotspot only supports the current JDK, and this
161 // function should be removed.
162 static void
163 compute_optional_offset(int& dest_offset,
164 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol) {
165 fieldDescriptor fd;
166 if (ik->find_local_field(name_symbol, signature_symbol, &fd)) {
167 dest_offset = fd.offset();
168 }
169 }
170
171 int java_lang_String::value_offset = 0;
172 int java_lang_String::hash_offset = 0;
173 int java_lang_String::coder_offset = 0;
174
175 bool java_lang_String::initialized = false;
176
177 bool java_lang_String::is_instance(oop obj) {
178 return is_instance_inlined(obj);
179 }
180
181 #if INCLUDE_CDS
182 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
183 f->do_u4((u4*)&offset)
184
185 #define FIELD_SERIALIZE_OFFSET_OPTIONAL(offset, klass, name, signature) \
186 f->do_u4((u4*)&offset)
187 #endif
188
189 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
190 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
191
192 #define FIELD_COMPUTE_OFFSET_OPTIONAL(offset, klass, name, signature) \
193 compute_optional_offset(offset, klass, name, vmSymbols::signature())
194
195 #define STRING_FIELDS_DO(macro) \
196 macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
197 macro(hash_offset, k, "hash", int_signature, false); \
198 macro(coder_offset, k, "coder", byte_signature, false)
199
200 void java_lang_String::compute_offsets() {
201 if (initialized) {
202 return;
203 }
204
205 InstanceKlass* k = SystemDictionary::String_klass();
206 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
207
208 initialized = true;
209 }
210
211 #if INCLUDE_CDS
212 void java_lang_String::serialize(SerializeClosure* f) {
213 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
214 f->do_u4((u4*)&initialized);
215 }
216 #endif
217
218 class CompactStringsFixup : public FieldClosure {
219 private:
220 bool _value;
221
222 public:
223 CompactStringsFixup(bool value) : _value(value) {}
224
225 void do_field(fieldDescriptor* fd) {
226 if (fd->name() == vmSymbols::compact_strings_name()) {
227 oop mirror = fd->field_holder()->java_mirror();
228 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
229 assert(mirror != NULL, "String must have mirror already");
230 mirror->bool_field_put(fd->offset(), _value);
231 }
232 }
233 };
234
235 void java_lang_String::set_compact_strings(bool value) {
236 CompactStringsFixup fix(value);
237 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
238 }
239
240 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
241 assert(initialized, "Must be initialized");
242 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
243
244 // Create the String object first, so there's a chance that the String
245 // and the char array it points to end up in the same cache line.
246 oop obj;
247 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
248
249 // Create the char array. The String object must be handlized here
250 // because GC can happen as a result of the allocation attempt.
251 Handle h_obj(THREAD, obj);
252 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
253 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
254
255 // Point the String at the char array
256 obj = h_obj();
257 set_value(obj, buffer);
258 // No need to zero the offset, allocation zero'ed the entire String object
259 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
260 return h_obj;
261 }
262
263 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
264 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
265 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
266 typeArrayOop buffer = value(h_obj());
267 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
268 if (is_latin1) {
269 for (int index = 0; index < length; index++) {
270 buffer->byte_at_put(index, (jbyte)unicode[index]);
271 }
272 } else {
273 for (int index = 0; index < length; index++) {
274 buffer->char_at_put(index, unicode[index]);
275 }
276 }
277
278 #ifdef ASSERT
279 {
280 ResourceMark rm;
281 char* expected = UNICODE::as_utf8(unicode, length);
282 char* actual = as_utf8_string(h_obj());
283 if (strcmp(expected, actual) != 0) {
284 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
285 ShouldNotReachHere();
286 }
287 }
288 #endif
289
290 return h_obj;
291 }
292
293 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
294 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
295 return h_obj();
296 }
297
298 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
299 if (utf8_str == NULL) {
300 return Handle();
301 }
302 bool has_multibyte, is_latin1;
303 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
304 if (!CompactStrings) {
305 has_multibyte = true;
306 is_latin1 = false;
307 }
308
309 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
310 if (length > 0) {
311 if (!has_multibyte) {
312 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
313 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
314 } else if (is_latin1) {
315 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
316 } else {
317 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
318 }
319 }
320
321 #ifdef ASSERT
322 // This check is too strict because the input string is not necessarily valid UTF8.
323 // For example, it may be created with arbitrary content via jni_NewStringUTF.
324 /*
325 {
326 ResourceMark rm;
327 const char* expected = utf8_str;
328 char* actual = as_utf8_string(h_obj());
329 if (strcmp(expected, actual) != 0) {
330 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
331 ShouldNotReachHere();
332 }
333 }
334 */
335 #endif
336
337 return h_obj;
338 }
339
340 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
341 Handle h_obj = create_from_str(utf8_str, CHECK_0);
342 return h_obj();
343 }
344
345 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
346 const char* utf8_str = (char*)symbol->bytes();
347 int utf8_len = symbol->utf8_length();
348
349 bool has_multibyte, is_latin1;
350 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
351 if (!CompactStrings) {
352 has_multibyte = true;
353 is_latin1 = false;
354 }
355
356 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
357 if (length > 0) {
358 if (!has_multibyte) {
359 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
360 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
361 } else if (is_latin1) {
362 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
363 } else {
364 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
365 }
366 }
367
368 #ifdef ASSERT
369 {
370 ResourceMark rm;
371 const char* expected = symbol->as_utf8();
372 char* actual = as_utf8_string(h_obj());
373 if (strncmp(expected, actual, utf8_len) != 0) {
374 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
375 ShouldNotReachHere();
376 }
377 }
378 #endif
379
380 return h_obj;
381 }
382
383 // Converts a C string to a Java String based on current encoding
384 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
385 assert(str != NULL, "bad arguments");
386
387 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
388 static to_java_string_fn_t _to_java_string_fn = NULL;
389
390 if (_to_java_string_fn == NULL) {
391 void *lib_handle = os::native_java_library();
392 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
393 if (_to_java_string_fn == NULL) {
394 fatal("NewStringPlatform missing");
395 }
396 }
397
398 jstring js = NULL;
399 { JavaThread* thread = (JavaThread*)THREAD;
400 assert(thread->is_Java_thread(), "must be java thread");
401 HandleMark hm(thread);
402 ThreadToNativeFromVM ttn(thread);
403 js = (_to_java_string_fn)(thread->jni_environment(), str);
404 }
405 return Handle(THREAD, JNIHandles::resolve(js));
406 }
407
408 // Converts a Java String to a native C string that can be used for
409 // native OS calls.
410 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
411 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
412 static to_platform_string_fn_t _to_platform_string_fn = NULL;
413
414 if (_to_platform_string_fn == NULL) {
415 void *lib_handle = os::native_java_library();
416 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
417 if (_to_platform_string_fn == NULL) {
418 fatal("GetStringPlatformChars missing");
419 }
420 }
421
422 char *native_platform_string;
423 { JavaThread* thread = (JavaThread*)THREAD;
424 assert(thread->is_Java_thread(), "must be java thread");
425 JNIEnv *env = thread->jni_environment();
426 jstring js = (jstring) JNIHandles::make_local(env, java_string());
427 bool is_copy;
428 HandleMark hm(thread);
429 ThreadToNativeFromVM ttn(thread);
430 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
431 assert(is_copy == JNI_TRUE, "is_copy value changed");
432 JNIHandles::destroy_local(js);
433 }
434 return native_platform_string;
435 }
436
437 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
438 oop obj = java_string();
439 // Typical usage is to convert all '/' to '.' in string.
440 typeArrayOop value = java_lang_String::value(obj);
441 int length = java_lang_String::length(obj);
442 bool is_latin1 = java_lang_String::is_latin1(obj);
443
444 // First check if any from_char exist
445 int index; // Declared outside, used later
446 for (index = 0; index < length; index++) {
447 jchar c = !is_latin1 ? value->char_at(index) :
448 ((jchar) value->byte_at(index)) & 0xff;
449 if (c == from_char) {
450 break;
451 }
452 }
453 if (index == length) {
454 // No from_char, so do not copy.
455 return java_string;
456 }
457
458 // Check if result string will be latin1
459 bool to_is_latin1 = false;
460
461 // Replacement char must be latin1
462 if (CompactStrings && UNICODE::is_latin1(to_char)) {
463 if (is_latin1) {
464 // Source string is latin1 as well
465 to_is_latin1 = true;
466 } else if (!UNICODE::is_latin1(from_char)) {
467 // We are replacing an UTF16 char. Scan string to
468 // check if result can be latin1 encoded.
469 to_is_latin1 = true;
470 for (index = 0; index < length; index++) {
471 jchar c = value->char_at(index);
472 if (c != from_char && !UNICODE::is_latin1(c)) {
473 to_is_latin1 = false;
474 break;
475 }
476 }
477 }
478 }
479
480 // Create new UNICODE (or byte) buffer. Must handlize value because GC
481 // may happen during String and char array creation.
482 typeArrayHandle h_value(THREAD, value);
483 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
484 typeArrayOop from_buffer = h_value();
485 typeArrayOop to_buffer = java_lang_String::value(string());
486
487 // Copy contents
488 for (index = 0; index < length; index++) {
489 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
490 ((jchar) from_buffer->byte_at(index)) & 0xff;
491 if (c == from_char) {
492 c = to_char;
493 }
494 if (!to_is_latin1) {
495 to_buffer->char_at_put(index, c);
496 } else {
497 to_buffer->byte_at_put(index, (jbyte) c);
498 }
499 }
500 return string;
501 }
502
503 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
504 typeArrayOop value = java_lang_String::value(java_string);
505 length = java_lang_String::length(java_string);
506 bool is_latin1 = java_lang_String::is_latin1(java_string);
507
508 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
509 if (result != NULL) {
510 if (!is_latin1) {
511 for (int index = 0; index < length; index++) {
512 result[index] = value->char_at(index);
513 }
514 } else {
515 for (int index = 0; index < length; index++) {
516 result[index] = ((jchar) value->byte_at(index)) & 0xff;
517 }
518 }
519 } else {
520 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
521 }
522 return result;
523 }
524
525 unsigned int java_lang_String::hash_code(oop java_string) {
526 int length = java_lang_String::length(java_string);
527 // Zero length string will hash to zero with String.hashCode() function.
528 if (length == 0) return 0;
529
530 typeArrayOop value = java_lang_String::value(java_string);
531 bool is_latin1 = java_lang_String::is_latin1(java_string);
532
533 if (is_latin1) {
534 return java_lang_String::hash_code(value->byte_at_addr(0), length);
535 } else {
536 return java_lang_String::hash_code(value->char_at_addr(0), length);
537 }
538 }
539
540 char* java_lang_String::as_quoted_ascii(oop java_string) {
541 typeArrayOop value = java_lang_String::value(java_string);
542 int length = java_lang_String::length(java_string);
543 bool is_latin1 = java_lang_String::is_latin1(java_string);
544
545 if (length == 0) return NULL;
546
547 char* result;
548 int result_length;
549 if (!is_latin1) {
550 jchar* base = value->char_at_addr(0);
551 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
552 result = NEW_RESOURCE_ARRAY(char, result_length);
553 UNICODE::as_quoted_ascii(base, length, result, result_length);
554 } else {
555 jbyte* base = value->byte_at_addr(0);
556 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
557 result = NEW_RESOURCE_ARRAY(char, result_length);
558 UNICODE::as_quoted_ascii(base, length, result, result_length);
559 }
560 assert(result_length >= length + 1, "must not be shorter");
561 assert(result_length == (int)strlen(result) + 1, "must match");
562 return result;
563 }
564
565 Symbol* java_lang_String::as_symbol(oop java_string, TRAPS) {
566 typeArrayOop value = java_lang_String::value(java_string);
567 int length = java_lang_String::length(java_string);
568 bool is_latin1 = java_lang_String::is_latin1(java_string);
569 if (!is_latin1) {
570 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
571 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
572 return sym;
573 } else {
574 ResourceMark rm;
575 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
576 const char* base = UNICODE::as_utf8(position, length);
577 Symbol* sym = SymbolTable::lookup(base, length, THREAD);
578 return sym;
579 }
580 }
581
582 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
583 typeArrayOop value = java_lang_String::value(java_string);
584 int length = java_lang_String::length(java_string);
585 bool is_latin1 = java_lang_String::is_latin1(java_string);
586 if (!is_latin1) {
587 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
588 return SymbolTable::probe_unicode(base, length);
589 } else {
590 ResourceMark rm;
591 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
592 const char* base = UNICODE::as_utf8(position, length);
593 return SymbolTable::probe(base, length);
594 }
595 }
596
597 int java_lang_String::utf8_length(oop java_string) {
598 typeArrayOop value = java_lang_String::value(java_string);
599 int length = java_lang_String::length(java_string);
600 bool is_latin1 = java_lang_String::is_latin1(java_string);
601 if (length == 0) {
602 return 0;
603 }
604 if (!is_latin1) {
605 return UNICODE::utf8_length(value->char_at_addr(0), length);
606 } else {
607 return UNICODE::utf8_length(value->byte_at_addr(0), length);
608 }
609 }
610
611 char* java_lang_String::as_utf8_string(oop java_string) {
612 typeArrayOop value = java_lang_String::value(java_string);
613 int length = java_lang_String::length(java_string);
614 bool is_latin1 = java_lang_String::is_latin1(java_string);
615 if (!is_latin1) {
616 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
617 return UNICODE::as_utf8(position, length);
618 } else {
619 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
620 return UNICODE::as_utf8(position, length);
621 }
622 }
623
624 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
625 typeArrayOop value = java_lang_String::value(java_string);
626 int length = java_lang_String::length(java_string);
627 bool is_latin1 = java_lang_String::is_latin1(java_string);
628 if (!is_latin1) {
629 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
630 return UNICODE::as_utf8(position, length, buf, buflen);
631 } else {
632 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
633 return UNICODE::as_utf8(position, length, buf, buflen);
634 }
635 }
636
637 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
638 typeArrayOop value = java_lang_String::value(java_string);
639 int length = java_lang_String::length(java_string);
640 assert(start + len <= length, "just checking");
641 bool is_latin1 = java_lang_String::is_latin1(java_string);
642 if (!is_latin1) {
643 jchar* position = value->char_at_addr(start);
644 return UNICODE::as_utf8(position, len);
645 } else {
646 jbyte* position = value->byte_at_addr(start);
647 return UNICODE::as_utf8(position, len);
648 }
649 }
650
651 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
652 typeArrayOop value = java_lang_String::value(java_string);
653 int length = java_lang_String::length(java_string);
654 assert(start + len <= length, "just checking");
655 bool is_latin1 = java_lang_String::is_latin1(java_string);
656 if (!is_latin1) {
657 jchar* position = value->char_at_addr(start);
658 return UNICODE::as_utf8(position, len, buf, buflen);
659 } else {
660 jbyte* position = value->byte_at_addr(start);
661 return UNICODE::as_utf8(position, len, buf, buflen);
662 }
663 }
664
665 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
666 assert(java_string->klass() == SystemDictionary::String_klass(),
667 "must be java_string");
668 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
669 int length = java_lang_String::length(java_string);
670 if (length != len) {
671 return false;
672 }
673 bool is_latin1 = java_lang_String::is_latin1(java_string);
674 if (!is_latin1) {
675 for (int i = 0; i < len; i++) {
676 if (value->char_at(i) != chars[i]) {
677 return false;
678 }
679 }
680 } else {
681 for (int i = 0; i < len; i++) {
682 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
683 return false;
684 }
685 }
686 }
687 return true;
688 }
689
690 bool java_lang_String::equals(oop str1, oop str2) {
691 assert(str1->klass() == SystemDictionary::String_klass(),
692 "must be java String");
693 assert(str2->klass() == SystemDictionary::String_klass(),
694 "must be java String");
695 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
696 int length1 = java_lang_String::length(str1);
697 bool is_latin1 = java_lang_String::is_latin1(str1);
698 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
699 int length2 = java_lang_String::length(str2);
700 bool is_latin2 = java_lang_String::is_latin1(str2);
701
702 if ((length1 != length2) || (is_latin1 != is_latin2)) {
703 // Strings of different size or with different
704 // coders are never equal.
705 return false;
706 }
707 int blength1 = value1->length();
708 for (int i = 0; i < blength1; i++) {
709 if (value1->byte_at(i) != value2->byte_at(i)) {
710 return false;
711 }
712 }
713 return true;
714 }
715
716 void java_lang_String::print(oop java_string, outputStream* st) {
717 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
718 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
719
720 if (value == NULL) {
721 // This can happen if, e.g., printing a String
722 // object before its initializer has been called
723 st->print("NULL");
724 return;
725 }
726
727 int length = java_lang_String::length(java_string);
728 bool is_latin1 = java_lang_String::is_latin1(java_string);
729
730 st->print("\"");
731 for (int index = 0; index < length; index++) {
732 st->print("%c", (!is_latin1) ? value->char_at(index) :
733 ((jchar) value->byte_at(index)) & 0xff );
734 }
735 st->print("\"");
736 }
737
738
739 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
740 assert(mirror.not_null() && fd->is_static(), "just checking");
741 if (fd->has_initial_value()) {
742 BasicType t = fd->field_type();
743 switch (t) {
744 case T_BYTE:
745 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
746 break;
747 case T_BOOLEAN:
748 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
749 break;
750 case T_CHAR:
751 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
752 break;
753 case T_SHORT:
754 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
755 break;
756 case T_INT:
757 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
758 break;
759 case T_FLOAT:
760 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
761 break;
762 case T_DOUBLE:
763 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
764 break;
765 case T_LONG:
766 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
767 break;
768 case T_OBJECT:
769 {
770 assert(fd->signature() == vmSymbols::string_signature(),
771 "just checking");
772 if (DumpSharedSpaces && MetaspaceShared::is_archive_object(mirror())) {
773 // Archive the String field and update the pointer.
774 oop s = mirror()->obj_field(fd->offset());
775 oop archived_s = StringTable::create_archived_string(s, CHECK);
776 mirror()->obj_field_put(fd->offset(), archived_s);
777 } else {
778 oop string = fd->string_initial_value(CHECK);
779 mirror()->obj_field_put(fd->offset(), string);
780 }
781 }
782 break;
783 default:
784 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
785 "Illegal ConstantValue attribute in class file");
786 }
787 }
788 }
789
790
791 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
792 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
793
794 // If the offset was read from the shared archive, it was fixed up already
795 if (!k->is_shared()) {
796 if (k->is_instance_klass()) {
797 // During bootstrap, java.lang.Class wasn't loaded so static field
798 // offsets were computed without the size added it. Go back and
799 // update all the static field offsets to included the size.
800 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
801 if (fs.access_flags().is_static()) {
802 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
803 fs.set_offset(real_offset);
804 }
805 }
806 }
807 }
808
809 if (k->is_shared() && k->has_raw_archived_mirror()) {
810 if (MetaspaceShared::open_archive_heap_region_mapped()) {
811 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
812 assert(present, "Missing archived mirror for %s", k->external_name());
813 return;
814 } else {
815 k->set_java_mirror_handle(NULL);
816 k->clear_has_raw_archived_mirror();
817 }
818 }
819 create_mirror(k, Handle(), Handle(), Handle(), CHECK);
820 }
821
822 void java_lang_Class::initialize_mirror_fields(Klass* k,
823 Handle mirror,
824 Handle protection_domain,
825 TRAPS) {
826 // Allocate a simple java object for a lock.
827 // This needs to be a java object because during class initialization
828 // it can be held across a java call.
829 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
830 set_init_lock(mirror(), r);
831
832 // Set protection domain also
833 set_protection_domain(mirror(), protection_domain());
834
835 // Initialize static fields
836 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
837 }
838
839 // Set the java.lang.Module module field in the java_lang_Class mirror
840 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
841 if (module.is_null()) {
842 // During startup, the module may be NULL only if java.base has not been defined yet.
843 // Put the class on the fixup_module_list to patch later when the java.lang.Module
844 // for java.base is known.
845 assert(!Universe::is_module_initialized(), "Incorrect java.lang.Module pre module system initialization");
846
847 bool javabase_was_defined = false;
848 {
849 MutexLocker m1(Module_lock, THREAD);
850 // Keep list of classes needing java.base module fixup
851 if (!ModuleEntryTable::javabase_defined()) {
852 assert(k->java_mirror() != NULL, "Class's mirror is null");
853 k->class_loader_data()->inc_keep_alive();
854 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
855 fixup_module_field_list()->push(k);
856 } else {
857 javabase_was_defined = true;
858 }
859 }
860
861 // If java.base was already defined then patch this particular class with java.base.
862 if (javabase_was_defined) {
863 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
864 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
865 "Setting class module field, " JAVA_BASE_NAME " should be defined");
866 Handle javabase_handle(THREAD, javabase_entry->module());
867 set_module(mirror(), javabase_handle());
868 }
869 } else {
870 assert(Universe::is_module_initialized() ||
871 (ModuleEntryTable::javabase_defined() &&
872 (oopDesc::equals(module(), ModuleEntryTable::javabase_moduleEntry()->module()))),
873 "Incorrect java.lang.Module specification while creating mirror");
874 set_module(mirror(), module());
875 }
876 }
877
878 // Statically allocate fixup lists because they always get created.
879 void java_lang_Class::allocate_fixup_lists() {
880 GrowableArray<Klass*>* mirror_list =
881 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
882 set_fixup_mirror_list(mirror_list);
883
884 GrowableArray<Klass*>* module_list =
885 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
886 set_fixup_module_field_list(module_list);
887 }
888
889 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
890 Handle module, Handle protection_domain, TRAPS) {
891 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
892 assert(k->java_mirror() == NULL, "should only assign mirror once");
893
894 // Use this moment of initialization to cache modifier_flags also,
895 // to support Class.getModifiers(). Instance classes recalculate
896 // the cached flags after the class file is parsed, but before the
897 // class is put into the system dictionary.
898 int computed_modifiers = k->compute_modifier_flags(CHECK);
899 k->set_modifier_flags(computed_modifiers);
900 // Class_klass has to be loaded because it is used to allocate
901 // the mirror.
902 if (SystemDictionary::Class_klass_loaded()) {
903 // Allocate mirror (java.lang.Class instance)
904 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
905 Handle mirror(THREAD, mirror_oop);
906 Handle comp_mirror;
907
908 // Setup indirection from mirror->klass
909 java_lang_Class::set_klass(mirror(), k);
910
911 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
912 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
913
914 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
915
916 // It might also have a component mirror. This mirror must already exist.
917 if (k->is_array_klass()) {
918 if (k->is_typeArray_klass()) {
919 BasicType type = TypeArrayKlass::cast(k)->element_type();
920 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
921 } else {
922 assert(k->is_objArray_klass(), "Must be");
923 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
924 assert(element_klass != NULL, "Must have an element klass");
925 comp_mirror = Handle(THREAD, element_klass->java_mirror());
926 }
927 assert(comp_mirror() != NULL, "must have a mirror");
928
929 // Two-way link between the array klass and its component mirror:
930 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
931 set_component_mirror(mirror(), comp_mirror());
932 // See below for ordering dependencies between field array_klass in component mirror
933 // and java_mirror in this klass.
934 } else {
935 assert(k->is_instance_klass(), "Must be");
936
937 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
938 if (HAS_PENDING_EXCEPTION) {
939 // If any of the fields throws an exception like OOM remove the klass field
940 // from the mirror so GC doesn't follow it after the klass has been deallocated.
941 // This mirror looks like a primitive type, which logically it is because it
942 // it represents no class.
943 java_lang_Class::set_klass(mirror(), NULL);
944 return;
945 }
946 }
947
948 // set the classLoader field in the java_lang_Class instance
949 assert(oopDesc::equals(class_loader(), k->class_loader()), "should be same");
950 set_class_loader(mirror(), class_loader());
951
952 // Setup indirection from klass->mirror
953 // after any exceptions can happen during allocations.
954 k->set_java_mirror(mirror);
955
956 // Set the module field in the java_lang_Class instance. This must be done
957 // after the mirror is set.
958 set_mirror_module_field(k, mirror, module, THREAD);
959
960 if (comp_mirror() != NULL) {
961 // Set after k->java_mirror() is published, because compiled code running
962 // concurrently doesn't expect a k to have a null java_mirror.
963 release_set_array_klass(comp_mirror(), k);
964 }
965 } else {
966 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
967 fixup_mirror_list()->push(k);
968 }
969 }
970
971 #if INCLUDE_CDS_JAVA_HEAP
972 // Clears mirror fields. Static final fields with initial values are reloaded
973 // from constant pool. The object identity hash is in the object header and is
974 // not affected.
975 class ResetMirrorField: public FieldClosure {
976 private:
977 Handle _m;
978
979 public:
980 ResetMirrorField(Handle mirror) : _m(mirror) {}
981
982 void do_field(fieldDescriptor* fd) {
983 assert(DumpSharedSpaces, "dump time only");
984 assert(_m.not_null(), "Mirror cannot be NULL");
985
986 if (fd->is_static() && fd->has_initial_value()) {
987 initialize_static_field(fd, _m, Thread::current());
988 return;
989 }
990
991 BasicType ft = fd->field_type();
992 switch (ft) {
993 case T_BYTE:
994 _m()->byte_field_put(fd->offset(), 0);
995 break;
996 case T_CHAR:
997 _m()->char_field_put(fd->offset(), 0);
998 break;
999 case T_DOUBLE:
1000 _m()->double_field_put(fd->offset(), 0);
1001 break;
1002 case T_FLOAT:
1003 _m()->float_field_put(fd->offset(), 0);
1004 break;
1005 case T_INT:
1006 _m()->int_field_put(fd->offset(), 0);
1007 break;
1008 case T_LONG:
1009 _m()->long_field_put(fd->offset(), 0);
1010 break;
1011 case T_SHORT:
1012 _m()->short_field_put(fd->offset(), 0);
1013 break;
1014 case T_BOOLEAN:
1015 _m()->bool_field_put(fd->offset(), false);
1016 break;
1017 case T_ARRAY:
1018 case T_OBJECT: {
1019 // It might be useful to cache the String field, but
1020 // for now just clear out any reference field
1021 oop o = _m()->obj_field(fd->offset());
1022 _m()->obj_field_put(fd->offset(), NULL);
1023 break;
1024 }
1025 default:
1026 ShouldNotReachHere();
1027 break;
1028 }
1029 }
1030 };
1031
1032 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1033 assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1034 "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1035
1036 for (int t = 0; t <= T_VOID; t++) {
1037 oop m = Universe::_mirrors[t];
1038 if (m != NULL) {
1039 // Update the field at _array_klass_offset to point to the relocated array klass.
1040 oop archived_m = MetaspaceShared::archive_heap_object(m, THREAD);
1041 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1042 assert(ak != NULL || t == T_VOID, "should not be NULL");
1043 if (ak != NULL) {
1044 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak);
1045 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1046 }
1047
1048 // Clear the fields. Just to be safe
1049 Klass *k = m->klass();
1050 Handle archived_mirror_h(THREAD, archived_m);
1051 ResetMirrorField reset(archived_mirror_h);
1052 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1053
1054 log_trace(cds, heap, mirror)(
1055 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1056 type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1057
1058 Universe::_mirrors[t] = archived_m;
1059 }
1060 }
1061
1062 assert(Universe::_mirrors[T_INT] != NULL &&
1063 Universe::_mirrors[T_FLOAT] != NULL &&
1064 Universe::_mirrors[T_DOUBLE] != NULL &&
1065 Universe::_mirrors[T_BYTE] != NULL &&
1066 Universe::_mirrors[T_BOOLEAN] != NULL &&
1067 Universe::_mirrors[T_CHAR] != NULL &&
1068 Universe::_mirrors[T_LONG] != NULL &&
1069 Universe::_mirrors[T_SHORT] != NULL &&
1070 Universe::_mirrors[T_VOID] != NULL, "sanity");
1071
1072 Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1073 Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1074 Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1075 Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1076 Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1077 Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1078 Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1079 Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1080 Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1081 }
1082
1083 //
1084 // After the mirror object is successfully archived, the archived
1085 // klass is set with _has_archived_raw_mirror flag.
1086 //
1087 // The _has_archived_raw_mirror flag is cleared at runtime when the
1088 // archived mirror is restored. If archived java heap data cannot
1089 // be used at runtime, new mirror object is created for the shared
1090 // class. The _has_archived_raw_mirror is cleared also during the process.
1091 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1092 assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1093 "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1094
1095 // Mirror is already archived
1096 if (k->has_raw_archived_mirror()) {
1097 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1098 return k->archived_java_mirror_raw();
1099 }
1100
1101 // No mirror
1102 oop mirror = k->java_mirror();
1103 if (mirror == NULL) {
1104 return NULL;
1105 }
1106
1107 if (k->is_instance_klass()) {
1108 InstanceKlass *ik = InstanceKlass::cast(k);
1109 assert(ik->signers() == NULL && !k->has_signer_and_not_archived(),
1110 "class with signer cannot be supported");
1111
1112 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1113 ik->is_shared_app_class())) {
1114 // Archiving mirror for classes from non-builtin loaders is not
1115 // supported. Clear the _java_mirror within the archived class.
1116 k->set_java_mirror_handle(NULL);
1117 return NULL;
1118 }
1119 }
1120
1121 // Now start archiving the mirror object
1122 oop archived_mirror = MetaspaceShared::archive_heap_object(mirror, THREAD);
1123 if (archived_mirror == NULL) {
1124 return NULL;
1125 }
1126
1127 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1128 if (archived_mirror == NULL) {
1129 return NULL;
1130 }
1131
1132 k->set_archived_java_mirror_raw(archived_mirror);
1133
1134 k->set_has_raw_archived_mirror();
1135
1136 ResourceMark rm;
1137 log_trace(cds, heap, mirror)(
1138 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1139 k->external_name(), p2i(mirror), p2i(archived_mirror));
1140
1141 return archived_mirror;
1142 }
1143
1144 // The process is based on create_mirror().
1145 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1146 oop archived_mirror,
1147 Thread *THREAD) {
1148 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1149 // to archived metadata and objects below.
1150 Klass *c = archived_mirror->klass();
1151 Handle archived_mirror_h(THREAD, archived_mirror);
1152 ResetMirrorField reset(archived_mirror_h);
1153 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1154
1155 if (k->is_array_klass()) {
1156 oop archived_comp_mirror;
1157 if (k->is_typeArray_klass()) {
1158 // The primitive type mirrors are already archived. Get the archived mirror.
1159 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1160 archived_comp_mirror = MetaspaceShared::find_archived_heap_object(comp_mirror);
1161 assert(archived_comp_mirror != NULL, "Must be");
1162 } else {
1163 assert(k->is_objArray_klass(), "Must be");
1164 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1165 assert(element_klass != NULL, "Must have an element klass");
1166 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1167 if (archived_comp_mirror == NULL) {
1168 return NULL;
1169 }
1170 }
1171 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1172 } else {
1173 assert(k->is_instance_klass(), "Must be");
1174
1175 // Reset local static fields in the mirror
1176 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1177
1178 java_lang_Class:set_init_lock(archived_mirror, NULL);
1179
1180 set_protection_domain(archived_mirror, NULL);
1181 }
1182
1183 // clear class loader and mirror_module_field
1184 set_class_loader(archived_mirror, NULL);
1185 set_module(archived_mirror, NULL);
1186
1187 // The archived mirror's field at _klass_offset is still pointing to the original
1188 // klass. Updated the field in the archived mirror to point to the relocated
1189 // klass in the archive.
1190 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror));
1191 log_debug(cds, heap, mirror)(
1192 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1193 p2i(as_Klass(mirror)), p2i(reloc_k));
1194 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1195
1196 // The field at _array_klass_offset is pointing to the original one dimension
1197 // higher array klass if exists. Relocate the pointer.
1198 Klass *arr = array_klass_acquire(mirror);
1199 if (arr != NULL) {
1200 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr);
1201 log_debug(cds, heap, mirror)(
1202 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1203 p2i(arr), p2i(reloc_arr));
1204 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1205 }
1206 return archived_mirror;
1207 }
1208
1209 // Returns true if the mirror is updated, false if no archived mirror
1210 // data is present. After the archived mirror object is restored, the
1211 // shared klass' _has_raw_archived_mirror flag is cleared.
1212 bool java_lang_Class::restore_archived_mirror(Klass *k,
1213 Handle class_loader, Handle module,
1214 Handle protection_domain, TRAPS) {
1215 oop m = MetaspaceShared::materialize_archived_object(k->archived_java_mirror_raw());
1216
1217 if (m == NULL) {
1218 return false;
1219 }
1220
1221 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1222
1223 // mirror is archived, restore
1224 assert(MetaspaceShared::is_archive_object(m), "must be archived mirror object");
1225 Handle mirror(THREAD, m);
1226
1227 // The java.lang.Class field offsets were archived and reloaded from archive.
1228 // No need to put classes on the fixup_mirror_list before java.lang.Class
1229 // is loaded.
1230
1231 if (!k->is_array_klass()) {
1232 // - local static final fields with initial values were initialized at dump time
1233
1234 // create the init_lock
1235 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1236 set_init_lock(mirror(), r);
1237
1238 if (protection_domain.not_null()) {
1239 set_protection_domain(mirror(), protection_domain());
1240 }
1241 }
1242
1243 assert(class_loader() == k->class_loader(), "should be same");
1244 if (class_loader.not_null()) {
1245 set_class_loader(mirror(), class_loader());
1246 }
1247
1248 k->set_java_mirror(mirror);
1249 k->clear_has_raw_archived_mirror();
1250
1251 set_mirror_module_field(k, mirror, module, THREAD);
1252
1253 ResourceMark rm;
1254 log_trace(cds, heap, mirror)(
1255 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1256
1257 return true;
1258 }
1259 #endif // INCLUDE_CDS_JAVA_HEAP
1260
1261 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1262 assert(_module_offset != 0, "must have been computed already");
1263 java_lang_Class::set_module(k->java_mirror(), module());
1264 }
1265
1266 int java_lang_Class::oop_size(oop java_class) {
1267 assert(_oop_size_offset != 0, "must be set");
1268 int size = java_class->int_field(_oop_size_offset);
1269 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1270 return size;
1271 }
1272
1273 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1274 assert(_oop_size_offset != 0, "must be set");
1275 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1276 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1277 }
1278
1279 int java_lang_Class::static_oop_field_count(oop java_class) {
1280 assert(_static_oop_field_count_offset != 0, "must be set");
1281 return java_class->int_field(_static_oop_field_count_offset);
1282 }
1283 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1284 assert(_static_oop_field_count_offset != 0, "must be set");
1285 java_class->int_field_put(_static_oop_field_count_offset, size);
1286 }
1287
1288 oop java_lang_Class::protection_domain(oop java_class) {
1289 assert(_protection_domain_offset != 0, "must be set");
1290 return java_class->obj_field(_protection_domain_offset);
1291 }
1292 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1293 assert(_protection_domain_offset != 0, "must be set");
1294 java_class->obj_field_put(_protection_domain_offset, pd);
1295 }
1296
1297 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1298 assert(_component_mirror_offset != 0, "must be set");
1299 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1300 }
1301 oop java_lang_Class::component_mirror(oop java_class) {
1302 assert(_component_mirror_offset != 0, "must be set");
1303 return java_class->obj_field(_component_mirror_offset);
1304 }
1305
1306 oop java_lang_Class::init_lock(oop java_class) {
1307 assert(_init_lock_offset != 0, "must be set");
1308 return java_class->obj_field(_init_lock_offset);
1309 }
1310 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1311 assert(_init_lock_offset != 0, "must be set");
1312 java_class->obj_field_put(_init_lock_offset, init_lock);
1313 }
1314
1315 objArrayOop java_lang_Class::signers(oop java_class) {
1316 assert(_signers_offset != 0, "must be set");
1317 return (objArrayOop)java_class->obj_field(_signers_offset);
1318 }
1319 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1320 assert(_signers_offset != 0, "must be set");
1321 java_class->obj_field_put(_signers_offset, (oop)signers);
1322 }
1323
1324
1325 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1326 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
1327 if (_class_loader_offset != 0) {
1328 java_class->obj_field_put(_class_loader_offset, loader);
1329 }
1330 }
1331
1332 oop java_lang_Class::class_loader(oop java_class) {
1333 assert(_class_loader_offset != 0, "must be set");
1334 return java_class->obj_field(_class_loader_offset);
1335 }
1336
1337 oop java_lang_Class::module(oop java_class) {
1338 assert(_module_offset != 0, "must be set");
1339 return java_class->obj_field(_module_offset);
1340 }
1341
1342 void java_lang_Class::set_module(oop java_class, oop module) {
1343 assert(_module_offset != 0, "must be set");
1344 java_class->obj_field_put(_module_offset, module);
1345 }
1346
1347 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1348 // This should be improved by adding a field at the Java level or by
1349 // introducing a new VM klass (see comment in ClassFileParser)
1350 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
1351 if (type != T_VOID) {
1352 Klass* aklass = Universe::typeArrayKlassObj(type);
1353 assert(aklass != NULL, "correct bootstrap");
1354 release_set_array_klass(java_class, aklass);
1355 }
1356 #ifdef ASSERT
1357 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1358 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1359 #endif
1360 return java_class;
1361 }
1362
1363
1364 Klass* java_lang_Class::as_Klass(oop java_class) {
1365 //%note memory_2
1366 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1367 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1368 assert(k == NULL || k->is_klass(), "type check");
1369 return k;
1370 }
1371
1372
1373 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1374 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1375 java_class->metadata_field_put(_klass_offset, klass);
1376 }
1377
1378
1379 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1380 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1381 Symbol* name = NULL;
1382 bool is_instance = false;
1383 if (is_primitive(java_class)) {
1384 name = vmSymbols::type_signature(primitive_type(java_class));
1385 } else {
1386 Klass* k = as_Klass(java_class);
1387 is_instance = k->is_instance_klass();
1388 name = k->name();
1389 }
1390 if (name == NULL) {
1391 st->print("<null>");
1392 return;
1393 }
1394 if (is_instance) st->print("L");
1395 st->write((char*) name->base(), (int) name->utf8_length());
1396 if (is_instance) st->print(";");
1397 }
1398
1399 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
1400 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1401 Symbol* name;
1402 if (is_primitive(java_class)) {
1403 name = vmSymbols::type_signature(primitive_type(java_class));
1404 // Because this can create a new symbol, the caller has to decrement
1405 // the refcount, so make adjustment here and below for symbols returned
1406 // that are not created or incremented due to a successful lookup.
1407 name->increment_refcount();
1408 } else {
1409 Klass* k = as_Klass(java_class);
1410 if (!k->is_instance_klass()) {
1411 name = k->name();
1412 name->increment_refcount();
1413 } else {
1414 ResourceMark rm;
1415 const char* sigstr = k->signature_name();
1416 int siglen = (int) strlen(sigstr);
1417 if (!intern_if_not_found) {
1418 name = SymbolTable::probe(sigstr, siglen);
1419 } else {
1420 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
1421 }
1422 }
1423 }
1424 return name;
1425 }
1426
1427 // Returns the Java name for this Java mirror (Resource allocated)
1428 // See Klass::external_name().
1429 // For primitive type Java mirrors, its type name is returned.
1430 const char* java_lang_Class::as_external_name(oop java_class) {
1431 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1432 const char* name = NULL;
1433 if (is_primitive(java_class)) {
1434 name = type2name(primitive_type(java_class));
1435 } else {
1436 name = as_Klass(java_class)->external_name();
1437 }
1438 if (name == NULL) {
1439 name = "<null>";
1440 }
1441 return name;
1442 }
1443
1444 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1445 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1446 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1447 return k;
1448 }
1449
1450
1451 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1452 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1453 java_class->release_metadata_field_put(_array_klass_offset, klass);
1454 }
1455
1456
1457 bool java_lang_Class::is_primitive(oop java_class) {
1458 // should assert:
1459 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1460 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
1461
1462 #ifdef ASSERT
1463 if (is_primitive) {
1464 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1465 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
1466 "Should be either the T_VOID primitive or a java primitive");
1467 }
1468 #endif
1469
1470 return is_primitive;
1471 }
1472
1473
1474 BasicType java_lang_Class::primitive_type(oop java_class) {
1475 assert(java_lang_Class::is_primitive(java_class), "just checking");
1476 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1477 BasicType type = T_VOID;
1478 if (ak != NULL) {
1479 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1480 type = ArrayKlass::cast(ak)->element_type();
1481 } else {
1482 assert(oopDesc::equals(java_class, Universe::void_mirror()), "only valid non-array primitive");
1483 }
1484 assert(oopDesc::equals(Universe::java_mirror(type), java_class), "must be consistent");
1485 return type;
1486 }
1487
1488 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1489 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1490 if (is_primitive(java_class)) {
1491 if (reference_klass != NULL)
1492 (*reference_klass) = NULL;
1493 return primitive_type(java_class);
1494 } else {
1495 if (reference_klass != NULL)
1496 (*reference_klass) = as_Klass(java_class);
1497 return T_OBJECT;
1498 }
1499 }
1500
1501
1502 oop java_lang_Class::primitive_mirror(BasicType t) {
1503 oop mirror = Universe::java_mirror(t);
1504 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1505 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1506 return mirror;
1507 }
1508
1509 bool java_lang_Class::offsets_computed = false;
1510 int java_lang_Class::classRedefinedCount_offset = -1;
1511
1512 #define CLASS_FIELDS_DO(macro) \
1513 macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false) ; \
1514 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1515 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1516 macro(_module_offset, k, "module", module_signature, false)
1517
1518 void java_lang_Class::compute_offsets() {
1519 if (offsets_computed) {
1520 return;
1521 }
1522
1523 offsets_computed = true;
1524
1525 InstanceKlass* k = SystemDictionary::Class_klass();
1526 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1527
1528 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1529 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1530 // GC treats them the same.
1531 _init_lock_offset = _component_mirror_offset;
1532
1533 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1534 }
1535
1536 #if INCLUDE_CDS
1537 void java_lang_Class::serialize(SerializeClosure* f) {
1538 f->do_u4((u4*)&offsets_computed);
1539 f->do_u4((u4*)&_init_lock_offset);
1540
1541 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1542
1543 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1544 }
1545 #endif
1546
1547 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1548 if (classRedefinedCount_offset == -1) {
1549 // If we don't have an offset for it then just return -1 as a marker.
1550 return -1;
1551 }
1552
1553 return the_class_mirror->int_field(classRedefinedCount_offset);
1554 }
1555
1556 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1557 if (classRedefinedCount_offset == -1) {
1558 // If we don't have an offset for it then nothing to set.
1559 return;
1560 }
1561
1562 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1563 }
1564
1565
1566 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1567 // platform thread structure, and a eetop offset which was used for thread
1568 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1569 // merged, so in the HotSpot VM we just use the eetop field for the thread
1570 // instead of the privateInfo_offset.
1571 //
1572 // Note: The stackSize field is only present starting in 1.4.
1573
1574 int java_lang_Thread::_name_offset = 0;
1575 int java_lang_Thread::_group_offset = 0;
1576 int java_lang_Thread::_contextClassLoader_offset = 0;
1577 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1578 int java_lang_Thread::_priority_offset = 0;
1579 int java_lang_Thread::_eetop_offset = 0;
1580 int java_lang_Thread::_daemon_offset = 0;
1581 int java_lang_Thread::_stillborn_offset = 0;
1582 int java_lang_Thread::_stackSize_offset = 0;
1583 int java_lang_Thread::_tid_offset = 0;
1584 int java_lang_Thread::_thread_status_offset = 0;
1585 int java_lang_Thread::_park_blocker_offset = 0;
1586 int java_lang_Thread::_park_event_offset = 0 ;
1587
1588 #define THREAD_FIELDS_DO(macro) \
1589 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1590 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1591 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1592 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1593 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1594 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1595 macro(_eetop_offset, k, "eetop", long_signature, false); \
1596 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1597 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1598 macro(_tid_offset, k, "tid", long_signature, false); \
1599 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1600 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1601 macro(_park_event_offset, k, "nativeParkEventPointer", long_signature, false)
1602
1603 void java_lang_Thread::compute_offsets() {
1604 assert(_group_offset == 0, "offsets should be initialized only once");
1605
1606 InstanceKlass* k = SystemDictionary::Thread_klass();
1607 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1608 }
1609
1610 #if INCLUDE_CDS
1611 void java_lang_Thread::serialize(SerializeClosure* f) {
1612 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1613 }
1614 #endif
1615
1616 JavaThread* java_lang_Thread::thread(oop java_thread) {
1617 return (JavaThread*)java_thread->address_field(_eetop_offset);
1618 }
1619
1620
1621 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1622 java_thread->address_field_put(_eetop_offset, (address)thread);
1623 }
1624
1625
1626 oop java_lang_Thread::name(oop java_thread) {
1627 return java_thread->obj_field(_name_offset);
1628 }
1629
1630
1631 void java_lang_Thread::set_name(oop java_thread, oop name) {
1632 java_thread->obj_field_put(_name_offset, name);
1633 }
1634
1635
1636 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1637 return (ThreadPriority)java_thread->int_field(_priority_offset);
1638 }
1639
1640
1641 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1642 java_thread->int_field_put(_priority_offset, priority);
1643 }
1644
1645
1646 oop java_lang_Thread::threadGroup(oop java_thread) {
1647 return java_thread->obj_field(_group_offset);
1648 }
1649
1650
1651 bool java_lang_Thread::is_stillborn(oop java_thread) {
1652 return java_thread->bool_field(_stillborn_offset) != 0;
1653 }
1654
1655
1656 // We never have reason to turn the stillborn bit off
1657 void java_lang_Thread::set_stillborn(oop java_thread) {
1658 java_thread->bool_field_put(_stillborn_offset, true);
1659 }
1660
1661
1662 bool java_lang_Thread::is_alive(oop java_thread) {
1663 JavaThread* thr = java_lang_Thread::thread(java_thread);
1664 return (thr != NULL);
1665 }
1666
1667
1668 bool java_lang_Thread::is_daemon(oop java_thread) {
1669 return java_thread->bool_field(_daemon_offset) != 0;
1670 }
1671
1672
1673 void java_lang_Thread::set_daemon(oop java_thread) {
1674 java_thread->bool_field_put(_daemon_offset, true);
1675 }
1676
1677 oop java_lang_Thread::context_class_loader(oop java_thread) {
1678 return java_thread->obj_field(_contextClassLoader_offset);
1679 }
1680
1681 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1682 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1683 }
1684
1685
1686 jlong java_lang_Thread::stackSize(oop java_thread) {
1687 if (_stackSize_offset > 0) {
1688 return java_thread->long_field(_stackSize_offset);
1689 } else {
1690 return 0;
1691 }
1692 }
1693
1694 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1695 void java_lang_Thread::set_thread_status(oop java_thread,
1696 java_lang_Thread::ThreadStatus status) {
1697 // The threadStatus is only present starting in 1.5
1698 if (_thread_status_offset > 0) {
1699 java_thread->int_field_put(_thread_status_offset, status);
1700 }
1701 }
1702
1703 // Read thread status value from threadStatus field in java.lang.Thread java class.
1704 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1705 // Make sure the caller is operating on behalf of the VM or is
1706 // running VM code (state == _thread_in_vm).
1707 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1708 JavaThread::current()->thread_state() == _thread_in_vm,
1709 "Java Thread is not running in vm");
1710 // The threadStatus is only present starting in 1.5
1711 if (_thread_status_offset > 0) {
1712 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1713 } else {
1714 // All we can easily figure out is if it is alive, but that is
1715 // enough info for a valid unknown status.
1716 // These aren't restricted to valid set ThreadStatus values, so
1717 // use JVMTI values and cast.
1718 JavaThread* thr = java_lang_Thread::thread(java_thread);
1719 if (thr == NULL) {
1720 // the thread hasn't run yet or is in the process of exiting
1721 return NEW;
1722 }
1723 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1724 }
1725 }
1726
1727
1728 jlong java_lang_Thread::thread_id(oop java_thread) {
1729 // The thread ID field is only present starting in 1.5
1730 if (_tid_offset > 0) {
1731 return java_thread->long_field(_tid_offset);
1732 } else {
1733 return 0;
1734 }
1735 }
1736
1737 oop java_lang_Thread::park_blocker(oop java_thread) {
1738 assert(JDK_Version::current().supports_thread_park_blocker() &&
1739 _park_blocker_offset != 0, "Must support parkBlocker field");
1740
1741 if (_park_blocker_offset > 0) {
1742 return java_thread->obj_field(_park_blocker_offset);
1743 }
1744
1745 return NULL;
1746 }
1747
1748 jlong java_lang_Thread::park_event(oop java_thread) {
1749 if (_park_event_offset > 0) {
1750 return java_thread->long_field(_park_event_offset);
1751 }
1752 return 0;
1753 }
1754
1755 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1756 if (_park_event_offset > 0) {
1757 java_thread->long_field_put(_park_event_offset, ptr);
1758 return true;
1759 }
1760 return false;
1761 }
1762
1763
1764 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1765 assert(_thread_status_offset != 0, "Must have thread status");
1766 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1767 switch (status) {
1768 case NEW : return "NEW";
1769 case RUNNABLE : return "RUNNABLE";
1770 case SLEEPING : return "TIMED_WAITING (sleeping)";
1771 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1772 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1773 case PARKED : return "WAITING (parking)";
1774 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1775 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1776 case TERMINATED : return "TERMINATED";
1777 default : return "UNKNOWN";
1778 };
1779 }
1780 int java_lang_ThreadGroup::_parent_offset = 0;
1781 int java_lang_ThreadGroup::_name_offset = 0;
1782 int java_lang_ThreadGroup::_threads_offset = 0;
1783 int java_lang_ThreadGroup::_groups_offset = 0;
1784 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1785 int java_lang_ThreadGroup::_destroyed_offset = 0;
1786 int java_lang_ThreadGroup::_daemon_offset = 0;
1787 int java_lang_ThreadGroup::_nthreads_offset = 0;
1788 int java_lang_ThreadGroup::_ngroups_offset = 0;
1789
1790 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1791 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1792 return java_thread_group->obj_field(_parent_offset);
1793 }
1794
1795 // ("name as oop" accessor is not necessary)
1796
1797 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1798 oop name = java_thread_group->obj_field(_name_offset);
1799 // ThreadGroup.name can be null
1800 if (name != NULL) {
1801 return java_lang_String::as_utf8_string(name);
1802 }
1803 return NULL;
1804 }
1805
1806 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1807 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1808 return java_thread_group->int_field(_nthreads_offset);
1809 }
1810
1811 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1812 oop threads = java_thread_group->obj_field(_threads_offset);
1813 assert(threads != NULL, "threadgroups should have threads");
1814 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1815 return objArrayOop(threads);
1816 }
1817
1818 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1819 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1820 return java_thread_group->int_field(_ngroups_offset);
1821 }
1822
1823 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1824 oop groups = java_thread_group->obj_field(_groups_offset);
1825 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1826 return objArrayOop(groups);
1827 }
1828
1829 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1830 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1831 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1832 }
1833
1834 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1835 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1836 return java_thread_group->bool_field(_destroyed_offset) != 0;
1837 }
1838
1839 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1840 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1841 return java_thread_group->bool_field(_daemon_offset) != 0;
1842 }
1843
1844 #define THREADGROUP_FIELDS_DO(macro) \
1845 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1846 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1847 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1848 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1849 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1850 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1851 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1852 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1853 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1854
1855 void java_lang_ThreadGroup::compute_offsets() {
1856 assert(_parent_offset == 0, "offsets should be initialized only once");
1857
1858 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1859 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1860 }
1861
1862 #if INCLUDE_CDS
1863 void java_lang_ThreadGroup::serialize(SerializeClosure* f) {
1864 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1865 }
1866 #endif
1867
1868 #define THROWABLE_FIELDS_DO(macro) \
1869 macro(backtrace_offset, k, "backtrace", object_signature, false); \
1870 macro(detailMessage_offset, k, "detailMessage", string_signature, false); \
1871 macro(stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1872 macro(depth_offset, k, "depth", int_signature, false); \
1873 macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1874
1875 void java_lang_Throwable::compute_offsets() {
1876 InstanceKlass* k = SystemDictionary::Throwable_klass();
1877 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1878 }
1879
1880 #if INCLUDE_CDS
1881 void java_lang_Throwable::serialize(SerializeClosure* f) {
1882 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1883 }
1884 #endif
1885
1886 oop java_lang_Throwable::unassigned_stacktrace() {
1887 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1888 oop base = ik->static_field_base_raw();
1889 return base->obj_field(static_unassigned_stacktrace_offset);
1890 }
1891
1892 oop java_lang_Throwable::backtrace(oop throwable) {
1893 return throwable->obj_field_acquire(backtrace_offset);
1894 }
1895
1896
1897 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1898 throwable->release_obj_field_put(backtrace_offset, value);
1899 }
1900
1901 int java_lang_Throwable::depth(oop throwable) {
1902 return throwable->int_field(depth_offset);
1903 }
1904
1905 void java_lang_Throwable::set_depth(oop throwable, int value) {
1906 throwable->int_field_put(depth_offset, value);
1907 }
1908
1909 oop java_lang_Throwable::message(oop throwable) {
1910 return throwable->obj_field(detailMessage_offset);
1911 }
1912
1913
1914 // Return Symbol for detailed_message or NULL
1915 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1916 PRESERVE_EXCEPTION_MARK; // Keep original exception
1917 oop detailed_message = java_lang_Throwable::message(throwable);
1918 if (detailed_message != NULL) {
1919 return java_lang_String::as_symbol(detailed_message, THREAD);
1920 }
1921 return NULL;
1922 }
1923
1924 void java_lang_Throwable::set_message(oop throwable, oop value) {
1925 throwable->obj_field_put(detailMessage_offset, value);
1926 }
1927
1928
1929 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1930 throwable->obj_field_put(stackTrace_offset, st_element_array);
1931 }
1932
1933 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1934 set_stacktrace(throwable, NULL);
1935 }
1936
1937
1938 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1939 ResourceMark rm;
1940 Klass* k = throwable->klass();
1941 assert(k != NULL, "just checking");
1942 st->print("%s", k->external_name());
1943 oop msg = message(throwable);
1944 if (msg != NULL) {
1945 st->print(": %s", java_lang_String::as_utf8_string(msg));
1946 }
1947 }
1948
1949 // After this many redefines, the stack trace is unreliable.
1950 const int MAX_VERSION = USHRT_MAX;
1951
1952 static inline bool version_matches(Method* method, int version) {
1953 assert(version < MAX_VERSION, "version is too big");
1954 return method != NULL && (method->constants()->version() == version);
1955 }
1956
1957
1958 // This class provides a simple wrapper over the internal structure of
1959 // exception backtrace to insulate users of the backtrace from needing
1960 // to know what it looks like.
1961 class BacktraceBuilder: public StackObj {
1962 friend class BacktraceIterator;
1963 private:
1964 Handle _backtrace;
1965 objArrayOop _head;
1966 typeArrayOop _methods;
1967 typeArrayOop _bcis;
1968 objArrayOop _mirrors;
1969 typeArrayOop _names; // needed to insulate method name against redefinition
1970 int _index;
1971 NoSafepointVerifier _nsv;
1972
1973 enum {
1974 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1975 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1976 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1977 trace_names_offset = java_lang_Throwable::trace_names_offset,
1978 trace_next_offset = java_lang_Throwable::trace_next_offset,
1979 trace_size = java_lang_Throwable::trace_size,
1980 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1981 };
1982
1983 // get info out of chunks
1984 static typeArrayOop get_methods(objArrayHandle chunk) {
1985 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1986 assert(methods != NULL, "method array should be initialized in backtrace");
1987 return methods;
1988 }
1989 static typeArrayOop get_bcis(objArrayHandle chunk) {
1990 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1991 assert(bcis != NULL, "bci array should be initialized in backtrace");
1992 return bcis;
1993 }
1994 static objArrayOop get_mirrors(objArrayHandle chunk) {
1995 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1996 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1997 return mirrors;
1998 }
1999 static typeArrayOop get_names(objArrayHandle chunk) {
2000 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2001 assert(names != NULL, "names array should be initialized in backtrace");
2002 return names;
2003 }
2004
2005 public:
2006
2007 // constructor for new backtrace
2008 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _names(NULL) {
2009 expand(CHECK);
2010 _backtrace = Handle(THREAD, _head);
2011 _index = 0;
2012 }
2013
2014 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2015 _methods = get_methods(backtrace);
2016 _bcis = get_bcis(backtrace);
2017 _mirrors = get_mirrors(backtrace);
2018 _names = get_names(backtrace);
2019 assert(_methods->length() == _bcis->length() &&
2020 _methods->length() == _mirrors->length() &&
2021 _mirrors->length() == _names->length(),
2022 "method and source information arrays should match");
2023
2024 // head is the preallocated backtrace
2025 _head = backtrace();
2026 _backtrace = Handle(thread, _head);
2027 _index = 0;
2028 }
2029
2030 void expand(TRAPS) {
2031 objArrayHandle old_head(THREAD, _head);
2032 PauseNoSafepointVerifier pnsv(&_nsv);
2033
2034 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2035 objArrayHandle new_head(THREAD, head);
2036
2037 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2038 typeArrayHandle new_methods(THREAD, methods);
2039
2040 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2041 typeArrayHandle new_bcis(THREAD, bcis);
2042
2043 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2044 objArrayHandle new_mirrors(THREAD, mirrors);
2045
2046 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2047 typeArrayHandle new_names(THREAD, names);
2048
2049 if (!old_head.is_null()) {
2050 old_head->obj_at_put(trace_next_offset, new_head());
2051 }
2052 new_head->obj_at_put(trace_methods_offset, new_methods());
2053 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2054 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2055 new_head->obj_at_put(trace_names_offset, new_names());
2056
2057 _head = new_head();
2058 _methods = new_methods();
2059 _bcis = new_bcis();
2060 _mirrors = new_mirrors();
2061 _names = new_names();
2062 _index = 0;
2063 }
2064
2065 oop backtrace() {
2066 return _backtrace();
2067 }
2068
2069 inline void push(Method* method, int bci, TRAPS) {
2070 // Smear the -1 bci to 0 since the array only holds unsigned
2071 // shorts. The later line number lookup would just smear the -1
2072 // to a 0 even if it could be recorded.
2073 if (bci == SynchronizationEntryBCI) bci = 0;
2074
2075 if (_index >= trace_chunk_size) {
2076 methodHandle mhandle(THREAD, method);
2077 expand(CHECK);
2078 method = mhandle();
2079 }
2080
2081 _methods->ushort_at_put(_index, method->orig_method_idnum());
2082 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2083
2084 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2085 // klass owning the symbols alive so their refcounts aren't decremented.
2086 Symbol* name = method->name();
2087 _names->symbol_at_put(_index, name);
2088
2089 // We need to save the mirrors in the backtrace to keep the class
2090 // from being unloaded while we still have this stack trace.
2091 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2092 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2093 _index++;
2094 }
2095
2096 };
2097
2098 struct BacktraceElement : public StackObj {
2099 int _method_id;
2100 int _bci;
2101 int _version;
2102 Symbol* _name;
2103 Handle _mirror;
2104 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2105 _mirror(mirror), _method_id(mid), _version(version), _bci(bci), _name(name) {}
2106 };
2107
2108 class BacktraceIterator : public StackObj {
2109 int _index;
2110 objArrayHandle _result;
2111 objArrayHandle _mirrors;
2112 typeArrayHandle _methods;
2113 typeArrayHandle _bcis;
2114 typeArrayHandle _names;
2115
2116 void init(objArrayHandle result, Thread* thread) {
2117 // Get method id, bci, version and mirror from chunk
2118 _result = result;
2119 if (_result.not_null()) {
2120 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2121 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2122 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2123 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2124 _index = 0;
2125 }
2126 }
2127 public:
2128 BacktraceIterator(objArrayHandle result, Thread* thread) {
2129 init(result, thread);
2130 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2131 }
2132
2133 BacktraceElement next(Thread* thread) {
2134 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2135 _methods->ushort_at(_index),
2136 Backtrace::version_at(_bcis->int_at(_index)),
2137 Backtrace::bci_at(_bcis->int_at(_index)),
2138 _names->symbol_at(_index));
2139 _index++;
2140
2141 if (_index >= java_lang_Throwable::trace_chunk_size) {
2142 int next_offset = java_lang_Throwable::trace_next_offset;
2143 // Get next chunk
2144 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2145 init(result, thread);
2146 }
2147 return e;
2148 }
2149
2150 bool repeat() {
2151 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2152 }
2153 };
2154
2155
2156 // Print stack trace element to resource allocated buffer
2157 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2158 int version, int bci, Symbol* name) {
2159 ResourceMark rm;
2160
2161 // Get strings and string lengths
2162 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2163 const char* klass_name = holder->external_name();
2164 int buf_len = (int)strlen(klass_name);
2165
2166 char* method_name = name->as_C_string();
2167 buf_len += (int)strlen(method_name);
2168
2169 char* source_file_name = NULL;
2170 Symbol* source = Backtrace::get_source_file_name(holder, version);
2171 if (source != NULL) {
2172 source_file_name = source->as_C_string();
2173 buf_len += (int)strlen(source_file_name);
2174 }
2175
2176 char *module_name = NULL, *module_version = NULL;
2177 ModuleEntry* module = holder->module();
2178 if (module->is_named()) {
2179 module_name = module->name()->as_C_string();
2180 buf_len += (int)strlen(module_name);
2181 if (module->version() != NULL) {
2182 module_version = module->version()->as_C_string();
2183 buf_len += (int)strlen(module_version);
2184 }
2185 }
2186
2187 // Allocate temporary buffer with extra space for formatting and line number
2188 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2189
2190 // Print stack trace line in buffer
2191 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2192
2193 // Print module information
2194 if (module_name != NULL) {
2195 if (module_version != NULL) {
2196 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2197 } else {
2198 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2199 }
2200 }
2201
2202 // The method can be NULL if the requested class version is gone
2203 Method* method = holder->method_with_orig_idnum(method_id, version);
2204 if (!version_matches(method, version)) {
2205 strcat(buf, "Redefined)");
2206 } else {
2207 int line_number = Backtrace::get_line_number(method, bci);
2208 if (line_number == -2) {
2209 strcat(buf, "Native Method)");
2210 } else {
2211 if (source_file_name != NULL && (line_number != -1)) {
2212 // Sourcename and linenumber
2213 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2214 } else if (source_file_name != NULL) {
2215 // Just sourcename
2216 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2217 } else {
2218 // Neither sourcename nor linenumber
2219 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2220 }
2221 CompiledMethod* nm = method->code();
2222 if (WizardMode && nm != NULL) {
2223 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2224 }
2225 }
2226 }
2227
2228 st->print_cr("%s", buf);
2229 }
2230
2231 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
2232 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2233 int method_id = method->orig_method_idnum();
2234 int version = method->constants()->version();
2235 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2236 }
2237
2238 /**
2239 * Print the throwable message and its stack trace plus all causes by walking the
2240 * cause chain. The output looks the same as of Throwable.printStackTrace().
2241 */
2242 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2243 // First, print the message.
2244 print(throwable(), st);
2245 st->cr();
2246
2247 // Now print the stack trace.
2248 Thread* THREAD = Thread::current();
2249 while (throwable.not_null()) {
2250 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2251 if (result.is_null()) {
2252 st->print_raw_cr("\t<<no stack trace available>>");
2253 return;
2254 }
2255 BacktraceIterator iter(result, THREAD);
2256
2257 while (iter.repeat()) {
2258 BacktraceElement bte = iter.next(THREAD);
2259 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2260 }
2261 {
2262 // Call getCause() which doesn't necessarily return the _cause field.
2263 EXCEPTION_MARK;
2264 JavaValue cause(T_OBJECT);
2265 JavaCalls::call_virtual(&cause,
2266 throwable,
2267 throwable->klass(),
2268 vmSymbols::getCause_name(),
2269 vmSymbols::void_throwable_signature(),
2270 THREAD);
2271 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2272 if (HAS_PENDING_EXCEPTION) {
2273 CLEAR_PENDING_EXCEPTION;
2274 throwable = Handle();
2275 } else {
2276 throwable = Handle(THREAD, (oop) cause.get_jobject());
2277 if (throwable.not_null()) {
2278 st->print("Caused by: ");
2279 print(throwable(), st);
2280 st->cr();
2281 }
2282 }
2283 }
2284 }
2285 }
2286
2287 /**
2288 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2289 */
2290 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2291 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2292 JavaValue result(T_VOID);
2293 JavaCalls::call_virtual(&result,
2294 throwable,
2295 SystemDictionary::Throwable_klass(),
2296 vmSymbols::printStackTrace_name(),
2297 vmSymbols::void_method_signature(),
2298 THREAD);
2299 }
2300
2301 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2302 if (!StackTraceInThrowable) return;
2303 ResourceMark rm(THREAD);
2304
2305 // Start out by clearing the backtrace for this object, in case the VM
2306 // runs out of memory while allocating the stack trace
2307 set_backtrace(throwable(), NULL);
2308 // Clear lazily constructed Java level stacktrace if refilling occurs
2309 // This is unnecessary in 1.7+ but harmless
2310 clear_stacktrace(throwable());
2311
2312 int max_depth = MaxJavaStackTraceDepth;
2313 JavaThread* thread = (JavaThread*)THREAD;
2314
2315 BacktraceBuilder bt(CHECK);
2316
2317 // If there is no Java frame just return the method that was being called
2318 // with bci 0
2319 if (!thread->has_last_Java_frame()) {
2320 if (max_depth >= 1 && method() != NULL) {
2321 bt.push(method(), 0, CHECK);
2322 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2323 set_depth(throwable(), 1);
2324 set_backtrace(throwable(), bt.backtrace());
2325 }
2326 return;
2327 }
2328
2329 // Instead of using vframe directly, this version of fill_in_stack_trace
2330 // basically handles everything by hand. This significantly improved the
2331 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2332 // See bug 6333838 for more details.
2333 // The "ASSERT" here is to verify this method generates the exactly same stack
2334 // trace as utilizing vframe.
2335 #ifdef ASSERT
2336 vframeStream st(thread);
2337 methodHandle st_method(THREAD, st.method());
2338 #endif
2339 int total_count = 0;
2340 RegisterMap map(thread, false);
2341 int decode_offset = 0;
2342 CompiledMethod* nm = NULL;
2343 bool skip_fillInStackTrace_check = false;
2344 bool skip_throwableInit_check = false;
2345 bool skip_hidden = !ShowHiddenFrames;
2346
2347 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2348 Method* method = NULL;
2349 int bci = 0;
2350
2351 // Compiled java method case.
2352 if (decode_offset != 0) {
2353 DebugInfoReadStream stream(nm, decode_offset);
2354 decode_offset = stream.read_int();
2355 method = (Method*)nm->metadata_at(stream.read_int());
2356 bci = stream.read_bci();
2357 } else {
2358 if (fr.is_first_frame()) break;
2359 address pc = fr.pc();
2360 if (fr.is_interpreted_frame()) {
2361 address bcp = fr.interpreter_frame_bcp();
2362 method = fr.interpreter_frame_method();
2363 bci = method->bci_from(bcp);
2364 fr = fr.sender(&map);
2365 } else {
2366 CodeBlob* cb = fr.cb();
2367 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2368 // but non nmethod
2369 fr = fr.sender(&map);
2370 if (cb == NULL || !cb->is_compiled()) {
2371 continue;
2372 }
2373 nm = cb->as_compiled_method();
2374 if (nm->method()->is_native()) {
2375 method = nm->method();
2376 bci = 0;
2377 } else {
2378 PcDesc* pd = nm->pc_desc_at(pc);
2379 decode_offset = pd->scope_decode_offset();
2380 // if decode_offset is not equal to 0, it will execute the
2381 // "compiled java method case" at the beginning of the loop.
2382 continue;
2383 }
2384 }
2385 }
2386 #ifdef ASSERT
2387 assert(st_method() == method && st.bci() == bci,
2388 "Wrong stack trace");
2389 st.next();
2390 // vframeStream::method isn't GC-safe so store off a copy
2391 // of the Method* in case we GC.
2392 if (!st.at_end()) {
2393 st_method = st.method();
2394 }
2395 #endif
2396
2397 // the format of the stacktrace will be:
2398 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2399 // - 0 or more <init> methods for the exception class (skipped)
2400 // - rest of the stack
2401
2402 if (!skip_fillInStackTrace_check) {
2403 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2404 throwable->is_a(method->method_holder())) {
2405 continue;
2406 }
2407 else {
2408 skip_fillInStackTrace_check = true; // gone past them all
2409 }
2410 }
2411 if (!skip_throwableInit_check) {
2412 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2413
2414 // skip <init> methods of the exception class and superclasses
2415 // This is simlar to classic VM.
2416 if (method->name() == vmSymbols::object_initializer_name() &&
2417 throwable->is_a(method->method_holder())) {
2418 continue;
2419 } else {
2420 // there are none or we've seen them all - either way stop checking
2421 skip_throwableInit_check = true;
2422 }
2423 }
2424 if (method->is_hidden()) {
2425 if (skip_hidden) continue;
2426 }
2427 bt.push(method, bci, CHECK);
2428 total_count++;
2429 }
2430
2431 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2432
2433 // Put completed stack trace into throwable object
2434 set_backtrace(throwable(), bt.backtrace());
2435 set_depth(throwable(), total_count);
2436 }
2437
2438 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2439 // No-op if stack trace is disabled
2440 if (!StackTraceInThrowable) {
2441 return;
2442 }
2443
2444 // Disable stack traces for some preallocated out of memory errors
2445 if (!Universe::should_fill_in_stack_trace(throwable)) {
2446 return;
2447 }
2448
2449 PRESERVE_EXCEPTION_MARK;
2450
2451 JavaThread* thread = JavaThread::active();
2452 fill_in_stack_trace(throwable, method, thread);
2453 // ignore exceptions thrown during stack trace filling
2454 CLEAR_PENDING_EXCEPTION;
2455 }
2456
2457 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2458 // Allocate stack trace - backtrace is created but not filled in
2459
2460 // No-op if stack trace is disabled
2461 if (!StackTraceInThrowable) return;
2462 BacktraceBuilder bt(CHECK); // creates a backtrace
2463 set_backtrace(throwable(), bt.backtrace());
2464 }
2465
2466
2467 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2468 // Fill in stack trace into preallocated backtrace (no GC)
2469
2470 // No-op if stack trace is disabled
2471 if (!StackTraceInThrowable) return;
2472
2473 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2474
2475 JavaThread* THREAD = JavaThread::current();
2476
2477 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2478 assert(backtrace.not_null(), "backtrace should have been preallocated");
2479
2480 ResourceMark rm(THREAD);
2481 vframeStream st(THREAD);
2482
2483 BacktraceBuilder bt(THREAD, backtrace);
2484
2485 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2486 // methods as preallocated errors aren't created by "java" code.
2487
2488 // fill in as much stack trace as possible
2489 int chunk_count = 0;
2490 for (;!st.at_end(); st.next()) {
2491 bt.push(st.method(), st.bci(), CHECK);
2492 chunk_count++;
2493
2494 // Bail-out for deep stacks
2495 if (chunk_count >= trace_chunk_size) break;
2496 }
2497 set_depth(throwable(), chunk_count);
2498 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2499
2500 // We support the Throwable immutability protocol defined for Java 7.
2501 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2502 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2503 }
2504
2505 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2506 objArrayHandle stack_trace_array_h, TRAPS) {
2507
2508 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2509 THROW(vmSymbols::java_lang_NullPointerException());
2510 }
2511
2512 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2513
2514 if (stack_trace_array_h->length() != depth(throwable())) {
2515 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2516 }
2517
2518 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2519 BacktraceIterator iter(result, THREAD);
2520
2521 int index = 0;
2522 while (iter.repeat()) {
2523 BacktraceElement bte = iter.next(THREAD);
2524
2525 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2526
2527 if (stack_trace_element.is_null()) {
2528 THROW(vmSymbols::java_lang_NullPointerException());
2529 }
2530
2531 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2532 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2533
2534 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2535 method,
2536 bte._version,
2537 bte._bci,
2538 bte._name, CHECK);
2539 }
2540 }
2541
2542 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2543 // Allocate java.lang.StackTraceElement instance
2544 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2545 assert(k != NULL, "must be loaded in 1.4+");
2546 if (k->should_be_initialized()) {
2547 k->initialize(CHECK_0);
2548 }
2549
2550 Handle element = k->allocate_instance_handle(CHECK_0);
2551
2552 int version = method->constants()->version();
2553 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
2554 return element();
2555 }
2556
2557 void java_lang_StackTraceElement::fill_in(Handle element,
2558 InstanceKlass* holder, const methodHandle& method,
2559 int version, int bci, Symbol* name, TRAPS) {
2560 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2561
2562 // Fill in class name
2563 ResourceMark rm(THREAD);
2564 const char* str = holder->external_name();
2565 oop classname = StringTable::intern((char*) str, CHECK);
2566 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2567 java_lang_StackTraceElement::set_declaringClassObject(element(), holder->java_mirror());
2568
2569 oop loader = holder->class_loader();
2570 if (loader != NULL) {
2571 oop loader_name = java_lang_ClassLoader::name(loader);
2572 if (loader_name != NULL)
2573 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2574 }
2575
2576 // Fill in method name
2577 oop methodname = StringTable::intern(name, CHECK);
2578 java_lang_StackTraceElement::set_methodName(element(), methodname);
2579
2580 // Fill in module name and version
2581 ModuleEntry* module = holder->module();
2582 if (module->is_named()) {
2583 oop module_name = StringTable::intern(module->name(), CHECK);
2584 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2585 oop module_version;
2586 if (module->version() != NULL) {
2587 module_version = StringTable::intern(module->version(), CHECK);
2588 } else {
2589 module_version = NULL;
2590 }
2591 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2592 }
2593
2594 if (method() == NULL || !version_matches(method(), version)) {
2595 // The method was redefined, accurate line number information isn't available
2596 java_lang_StackTraceElement::set_fileName(element(), NULL);
2597 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2598 } else {
2599 // Fill in source file name and line number.
2600 Symbol* source = Backtrace::get_source_file_name(holder, version);
2601 if (ShowHiddenFrames && source == NULL)
2602 source = vmSymbols::unknown_class_name();
2603 oop filename = StringTable::intern(source, CHECK);
2604 java_lang_StackTraceElement::set_fileName(element(), filename);
2605
2606 int line_number = Backtrace::get_line_number(method, bci);
2607 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2608 }
2609 }
2610
2611 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2612 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2613 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2614 // we should expand MemberName::name when Throwable uses StackTrace
2615 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2616 return method;
2617 }
2618
2619 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2620 // set Method* or mid/cpref
2621 Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2622 InstanceKlass* ik = method->method_holder();
2623 CallInfo info(method(), ik, CHECK);
2624 MethodHandles::init_method_MemberName(mname, info);
2625 // set bci
2626 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2627 // method may be redefined; store the version
2628 int version = method->constants()->version();
2629 assert((jushort)version == version, "version should be short");
2630 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2631 }
2632
2633 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2634 ResourceMark rm(THREAD);
2635 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2636 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2637 InstanceKlass* holder = InstanceKlass::cast(clazz);
2638 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2639
2640 short version = stackFrame->short_field(_version_offset);
2641 short bci = stackFrame->short_field(_bci_offset);
2642 Symbol* name = method->name();
2643 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, name, CHECK);
2644 }
2645
2646 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2647 macro(_memberName_offset, k, "memberName", object_signature, false); \
2648 macro(_bci_offset, k, "bci", short_signature, false)
2649
2650 void java_lang_StackFrameInfo::compute_offsets() {
2651 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2652 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2653 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2654 }
2655
2656 #if INCLUDE_CDS
2657 void java_lang_StackFrameInfo::serialize(SerializeClosure* f) {
2658 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2659 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2660 }
2661 #endif
2662
2663 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2664 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2665 macro(_locals_offset, k, "locals", object_array_signature, false); \
2666 macro(_operands_offset, k, "operands", object_array_signature, false); \
2667 macro(_mode_offset, k, "mode", int_signature, false)
2668
2669 void java_lang_LiveStackFrameInfo::compute_offsets() {
2670 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2671 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2672 }
2673
2674 #if INCLUDE_CDS
2675 void java_lang_LiveStackFrameInfo::serialize(SerializeClosure* f) {
2676 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2677 }
2678 #endif
2679
2680 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2681 macro(override_offset, k, "override", bool_signature, false)
2682
2683 void java_lang_reflect_AccessibleObject::compute_offsets() {
2684 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2685 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2686 }
2687
2688 #if INCLUDE_CDS
2689 void java_lang_reflect_AccessibleObject::serialize(SerializeClosure* f) {
2690 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2691 }
2692 #endif
2693
2694 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2695 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2696 return (jboolean) reflect->bool_field(override_offset);
2697 }
2698
2699 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2700 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2701 reflect->bool_field_put(override_offset, (int) value);
2702 }
2703
2704 #define METHOD_FIELDS_DO(macro) \
2705 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2706 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
2707 macro(returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2708 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2709 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2710 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2711 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2712 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
2713 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
2714 macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
2715 macro##_OPTIONAL(annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature); \
2716 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
2717
2718 void java_lang_reflect_Method::compute_offsets() {
2719 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2720 // The generic signature and annotations fields are only present in 1.5
2721 signature_offset = -1;
2722 annotations_offset = -1;
2723 parameter_annotations_offset = -1;
2724 annotation_default_offset = -1;
2725 type_annotations_offset = -1;
2726 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2727 }
2728
2729 #if INCLUDE_CDS
2730 void java_lang_reflect_Method::serialize(SerializeClosure* f) {
2731 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2732 }
2733 #endif
2734
2735 Handle java_lang_reflect_Method::create(TRAPS) {
2736 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2737 Klass* klass = SystemDictionary::reflect_Method_klass();
2738 // This class is eagerly initialized during VM initialization, since we keep a refence
2739 // to one of the methods
2740 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2741 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2742 }
2743
2744 oop java_lang_reflect_Method::clazz(oop reflect) {
2745 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2746 return reflect->obj_field(clazz_offset);
2747 }
2748
2749 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2750 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2751 reflect->obj_field_put(clazz_offset, value);
2752 }
2753
2754 int java_lang_reflect_Method::slot(oop reflect) {
2755 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2756 return reflect->int_field(slot_offset);
2757 }
2758
2759 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2760 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2761 reflect->int_field_put(slot_offset, value);
2762 }
2763
2764 oop java_lang_reflect_Method::name(oop method) {
2765 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2766 return method->obj_field(name_offset);
2767 }
2768
2769 void java_lang_reflect_Method::set_name(oop method, oop value) {
2770 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2771 method->obj_field_put(name_offset, value);
2772 }
2773
2774 oop java_lang_reflect_Method::return_type(oop method) {
2775 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2776 return method->obj_field(returnType_offset);
2777 }
2778
2779 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2780 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2781 method->obj_field_put(returnType_offset, value);
2782 }
2783
2784 oop java_lang_reflect_Method::parameter_types(oop method) {
2785 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2786 return method->obj_field(parameterTypes_offset);
2787 }
2788
2789 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2790 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2791 method->obj_field_put(parameterTypes_offset, value);
2792 }
2793
2794 oop java_lang_reflect_Method::exception_types(oop method) {
2795 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2796 return method->obj_field(exceptionTypes_offset);
2797 }
2798
2799 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2800 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2801 method->obj_field_put(exceptionTypes_offset, value);
2802 }
2803
2804 int java_lang_reflect_Method::modifiers(oop method) {
2805 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2806 return method->int_field(modifiers_offset);
2807 }
2808
2809 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2810 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2811 method->int_field_put(modifiers_offset, value);
2812 }
2813
2814 bool java_lang_reflect_Method::has_signature_field() {
2815 return (signature_offset >= 0);
2816 }
2817
2818 oop java_lang_reflect_Method::signature(oop method) {
2819 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2820 assert(has_signature_field(), "signature field must be present");
2821 return method->obj_field(signature_offset);
2822 }
2823
2824 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2825 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2826 assert(has_signature_field(), "signature field must be present");
2827 method->obj_field_put(signature_offset, value);
2828 }
2829
2830 bool java_lang_reflect_Method::has_annotations_field() {
2831 return (annotations_offset >= 0);
2832 }
2833
2834 oop java_lang_reflect_Method::annotations(oop method) {
2835 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2836 assert(has_annotations_field(), "annotations field must be present");
2837 return method->obj_field(annotations_offset);
2838 }
2839
2840 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2841 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2842 assert(has_annotations_field(), "annotations field must be present");
2843 method->obj_field_put(annotations_offset, value);
2844 }
2845
2846 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2847 return (parameter_annotations_offset >= 0);
2848 }
2849
2850 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2851 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2852 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2853 return method->obj_field(parameter_annotations_offset);
2854 }
2855
2856 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2857 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2858 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2859 method->obj_field_put(parameter_annotations_offset, value);
2860 }
2861
2862 bool java_lang_reflect_Method::has_annotation_default_field() {
2863 return (annotation_default_offset >= 0);
2864 }
2865
2866 oop java_lang_reflect_Method::annotation_default(oop method) {
2867 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2868 assert(has_annotation_default_field(), "annotation default field must be present");
2869 return method->obj_field(annotation_default_offset);
2870 }
2871
2872 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2873 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2874 assert(has_annotation_default_field(), "annotation default field must be present");
2875 method->obj_field_put(annotation_default_offset, value);
2876 }
2877
2878 bool java_lang_reflect_Method::has_type_annotations_field() {
2879 return (type_annotations_offset >= 0);
2880 }
2881
2882 oop java_lang_reflect_Method::type_annotations(oop method) {
2883 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2884 assert(has_type_annotations_field(), "type_annotations field must be present");
2885 return method->obj_field(type_annotations_offset);
2886 }
2887
2888 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2889 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2890 assert(has_type_annotations_field(), "type_annotations field must be present");
2891 method->obj_field_put(type_annotations_offset, value);
2892 }
2893
2894 #define CONSTRUCTOR_FIELDS_DO(macro) \
2895 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2896 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2897 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2898 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2899 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2900 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
2901 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
2902 macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
2903 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
2904
2905
2906 void java_lang_reflect_Constructor::compute_offsets() {
2907 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2908 // The generic signature and annotations fields are only present in 1.5
2909 signature_offset = -1;
2910 annotations_offset = -1;
2911 parameter_annotations_offset = -1;
2912 type_annotations_offset = -1;
2913 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2914 }
2915
2916 #if INCLUDE_CDS
2917 void java_lang_reflect_Constructor::serialize(SerializeClosure* f) {
2918 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2919 }
2920 #endif
2921
2922 Handle java_lang_reflect_Constructor::create(TRAPS) {
2923 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2924 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2925 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2926 InstanceKlass* ik = InstanceKlass::cast(k);
2927 // Ensure it is initialized
2928 ik->initialize(CHECK_NH);
2929 return ik->allocate_instance_handle(THREAD);
2930 }
2931
2932 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2933 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2934 return reflect->obj_field(clazz_offset);
2935 }
2936
2937 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2938 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2939 reflect->obj_field_put(clazz_offset, value);
2940 }
2941
2942 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2943 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2944 return constructor->obj_field(parameterTypes_offset);
2945 }
2946
2947 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2948 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2949 constructor->obj_field_put(parameterTypes_offset, value);
2950 }
2951
2952 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2953 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2954 return constructor->obj_field(exceptionTypes_offset);
2955 }
2956
2957 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2958 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2959 constructor->obj_field_put(exceptionTypes_offset, value);
2960 }
2961
2962 int java_lang_reflect_Constructor::slot(oop reflect) {
2963 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2964 return reflect->int_field(slot_offset);
2965 }
2966
2967 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2968 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2969 reflect->int_field_put(slot_offset, value);
2970 }
2971
2972 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2973 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2974 return constructor->int_field(modifiers_offset);
2975 }
2976
2977 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2978 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2979 constructor->int_field_put(modifiers_offset, value);
2980 }
2981
2982 bool java_lang_reflect_Constructor::has_signature_field() {
2983 return (signature_offset >= 0);
2984 }
2985
2986 oop java_lang_reflect_Constructor::signature(oop constructor) {
2987 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2988 assert(has_signature_field(), "signature field must be present");
2989 return constructor->obj_field(signature_offset);
2990 }
2991
2992 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2993 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2994 assert(has_signature_field(), "signature field must be present");
2995 constructor->obj_field_put(signature_offset, value);
2996 }
2997
2998 bool java_lang_reflect_Constructor::has_annotations_field() {
2999 return (annotations_offset >= 0);
3000 }
3001
3002 oop java_lang_reflect_Constructor::annotations(oop constructor) {
3003 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3004 assert(has_annotations_field(), "annotations field must be present");
3005 return constructor->obj_field(annotations_offset);
3006 }
3007
3008 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3009 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3010 assert(has_annotations_field(), "annotations field must be present");
3011 constructor->obj_field_put(annotations_offset, value);
3012 }
3013
3014 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
3015 return (parameter_annotations_offset >= 0);
3016 }
3017
3018 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
3019 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3020 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3021 return method->obj_field(parameter_annotations_offset);
3022 }
3023
3024 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3025 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3026 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3027 method->obj_field_put(parameter_annotations_offset, value);
3028 }
3029
3030 bool java_lang_reflect_Constructor::has_type_annotations_field() {
3031 return (type_annotations_offset >= 0);
3032 }
3033
3034 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
3035 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3036 assert(has_type_annotations_field(), "type_annotations field must be present");
3037 return constructor->obj_field(type_annotations_offset);
3038 }
3039
3040 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
3041 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3042 assert(has_type_annotations_field(), "type_annotations field must be present");
3043 constructor->obj_field_put(type_annotations_offset, value);
3044 }
3045
3046 #define FIELD_FIELDS_DO(macro) \
3047 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3048 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3049 macro(type_offset, k, vmSymbols::type_name(), class_signature, false); \
3050 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3051 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3052 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
3053 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
3054 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
3055
3056 void java_lang_reflect_Field::compute_offsets() {
3057 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3058 // The generic signature and annotations fields are only present in 1.5
3059 signature_offset = -1;
3060 annotations_offset = -1;
3061 type_annotations_offset = -1;
3062 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3063 }
3064
3065 #if INCLUDE_CDS
3066 void java_lang_reflect_Field::serialize(SerializeClosure* f) {
3067 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3068 }
3069 #endif
3070
3071 Handle java_lang_reflect_Field::create(TRAPS) {
3072 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3073 Symbol* name = vmSymbols::java_lang_reflect_Field();
3074 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3075 InstanceKlass* ik = InstanceKlass::cast(k);
3076 // Ensure it is initialized
3077 ik->initialize(CHECK_NH);
3078 return ik->allocate_instance_handle(THREAD);
3079 }
3080
3081 oop java_lang_reflect_Field::clazz(oop reflect) {
3082 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3083 return reflect->obj_field(clazz_offset);
3084 }
3085
3086 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3087 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3088 reflect->obj_field_put(clazz_offset, value);
3089 }
3090
3091 oop java_lang_reflect_Field::name(oop field) {
3092 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3093 return field->obj_field(name_offset);
3094 }
3095
3096 void java_lang_reflect_Field::set_name(oop field, oop value) {
3097 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3098 field->obj_field_put(name_offset, value);
3099 }
3100
3101 oop java_lang_reflect_Field::type(oop field) {
3102 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3103 return field->obj_field(type_offset);
3104 }
3105
3106 void java_lang_reflect_Field::set_type(oop field, oop value) {
3107 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3108 field->obj_field_put(type_offset, value);
3109 }
3110
3111 int java_lang_reflect_Field::slot(oop reflect) {
3112 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3113 return reflect->int_field(slot_offset);
3114 }
3115
3116 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3117 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3118 reflect->int_field_put(slot_offset, value);
3119 }
3120
3121 int java_lang_reflect_Field::modifiers(oop field) {
3122 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3123 return field->int_field(modifiers_offset);
3124 }
3125
3126 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3127 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3128 field->int_field_put(modifiers_offset, value);
3129 }
3130
3131 bool java_lang_reflect_Field::has_signature_field() {
3132 return (signature_offset >= 0);
3133 }
3134
3135 oop java_lang_reflect_Field::signature(oop field) {
3136 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3137 assert(has_signature_field(), "signature field must be present");
3138 return field->obj_field(signature_offset);
3139 }
3140
3141 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3142 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3143 assert(has_signature_field(), "signature field must be present");
3144 field->obj_field_put(signature_offset, value);
3145 }
3146
3147 bool java_lang_reflect_Field::has_annotations_field() {
3148 return (annotations_offset >= 0);
3149 }
3150
3151 oop java_lang_reflect_Field::annotations(oop field) {
3152 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3153 assert(has_annotations_field(), "annotations field must be present");
3154 return field->obj_field(annotations_offset);
3155 }
3156
3157 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3158 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3159 assert(has_annotations_field(), "annotations field must be present");
3160 field->obj_field_put(annotations_offset, value);
3161 }
3162
3163 bool java_lang_reflect_Field::has_type_annotations_field() {
3164 return (type_annotations_offset >= 0);
3165 }
3166
3167 oop java_lang_reflect_Field::type_annotations(oop field) {
3168 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3169 assert(has_type_annotations_field(), "type_annotations field must be present");
3170 return field->obj_field(type_annotations_offset);
3171 }
3172
3173 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
3174 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3175 assert(has_type_annotations_field(), "type_annotations field must be present");
3176 field->obj_field_put(type_annotations_offset, value);
3177 }
3178
3179 #define CONSTANTPOOL_FIELDS_DO(macro) \
3180 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3181
3182 void reflect_ConstantPool::compute_offsets() {
3183 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3184 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3185 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3186 }
3187
3188 #if INCLUDE_CDS
3189 void reflect_ConstantPool::serialize(SerializeClosure* f) {
3190 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3191 }
3192 #endif
3193
3194 #define PARAMETER_FIELDS_DO(macro) \
3195 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3196 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3197 macro(index_offset, k, vmSymbols::index_name(), int_signature, false); \
3198 macro(executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3199
3200 void java_lang_reflect_Parameter::compute_offsets() {
3201 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3202 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3203 }
3204
3205 #if INCLUDE_CDS
3206 void java_lang_reflect_Parameter::serialize(SerializeClosure* f) {
3207 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3208 }
3209 #endif
3210
3211 Handle java_lang_reflect_Parameter::create(TRAPS) {
3212 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3213 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3214 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3215 InstanceKlass* ik = InstanceKlass::cast(k);
3216 // Ensure it is initialized
3217 ik->initialize(CHECK_NH);
3218 return ik->allocate_instance_handle(THREAD);
3219 }
3220
3221 oop java_lang_reflect_Parameter::name(oop param) {
3222 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3223 return param->obj_field(name_offset);
3224 }
3225
3226 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3227 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3228 param->obj_field_put(name_offset, value);
3229 }
3230
3231 int java_lang_reflect_Parameter::modifiers(oop param) {
3232 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3233 return param->int_field(modifiers_offset);
3234 }
3235
3236 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3237 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3238 param->int_field_put(modifiers_offset, value);
3239 }
3240
3241 int java_lang_reflect_Parameter::index(oop param) {
3242 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3243 return param->int_field(index_offset);
3244 }
3245
3246 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3247 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3248 param->int_field_put(index_offset, value);
3249 }
3250
3251 oop java_lang_reflect_Parameter::executable(oop param) {
3252 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3253 return param->obj_field(executable_offset);
3254 }
3255
3256 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3257 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3258 param->obj_field_put(executable_offset, value);
3259 }
3260
3261
3262 int java_lang_Module::loader_offset;
3263 int java_lang_Module::name_offset;
3264 int java_lang_Module::_module_entry_offset = -1;
3265
3266 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3267 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3268 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3269 vmSymbols::java_lang_module_init_signature(),
3270 loader, module_name, CHECK_NH);
3271 }
3272
3273 #define MODULE_FIELDS_DO(macro) \
3274 macro(loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3275 macro(name_offset, k, vmSymbols::name_name(), string_signature, false)
3276
3277 void java_lang_Module::compute_offsets() {
3278 InstanceKlass* k = SystemDictionary::Module_klass();
3279 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3280 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3281 }
3282
3283 #if INCLUDE_CDS
3284 void java_lang_Module::serialize(SerializeClosure* f) {
3285 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3286 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3287 }
3288 #endif
3289
3290 oop java_lang_Module::loader(oop module) {
3291 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3292 return module->obj_field(loader_offset);
3293 }
3294
3295 void java_lang_Module::set_loader(oop module, oop value) {
3296 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3297 module->obj_field_put(loader_offset, value);
3298 }
3299
3300 oop java_lang_Module::name(oop module) {
3301 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3302 return module->obj_field(name_offset);
3303 }
3304
3305 void java_lang_Module::set_name(oop module, oop value) {
3306 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3307 module->obj_field_put(name_offset, value);
3308 }
3309
3310 ModuleEntry* java_lang_Module::module_entry(oop module) {
3311 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3312 assert(module != NULL, "module can't be null");
3313 assert(oopDesc::is_oop(module), "module must be oop");
3314
3315 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3316 if (module_entry == NULL) {
3317 // If the inject field containing the ModuleEntry* is null then return the
3318 // class loader's unnamed module.
3319 oop loader = java_lang_Module::loader(module);
3320 Handle h_loader = Handle(Thread::current(), loader);
3321 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3322 return loader_cld->unnamed_module();
3323 }
3324 return module_entry;
3325 }
3326
3327 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3328 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3329 assert(module != NULL, "module can't be null");
3330 assert(oopDesc::is_oop(module), "module must be oop");
3331 module->address_field_put(_module_entry_offset, (address)module_entry);
3332 }
3333
3334 Handle reflect_ConstantPool::create(TRAPS) {
3335 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3336 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3337 // Ensure it is initialized
3338 k->initialize(CHECK_NH);
3339 return k->allocate_instance_handle(THREAD);
3340 }
3341
3342
3343 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3344 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3345 oop mirror = value->pool_holder()->java_mirror();
3346 // Save the mirror to get back the constant pool.
3347 reflect->obj_field_put(_oop_offset, mirror);
3348 }
3349
3350 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3351 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3352
3353 oop mirror = reflect->obj_field(_oop_offset);
3354 Klass* k = java_lang_Class::as_Klass(mirror);
3355 assert(k->is_instance_klass(), "Must be");
3356
3357 // Get the constant pool back from the klass. Since class redefinition
3358 // merges the new constant pool into the old, this is essentially the
3359 // same constant pool as the original. If constant pool merging is
3360 // no longer done in the future, this will have to change to save
3361 // the original.
3362 return InstanceKlass::cast(k)->constants();
3363 }
3364
3365 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3366 macro(_base_offset, k, "base", object_signature, false)
3367
3368 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3369 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3370 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3371 }
3372
3373 #if INCLUDE_CDS
3374 void reflect_UnsafeStaticFieldAccessorImpl::serialize(SerializeClosure* f) {
3375 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3376 }
3377 #endif
3378
3379 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3380 Klass* k = SystemDictionary::box_klass(type);
3381 if (k == NULL) return NULL;
3382 InstanceKlass* ik = InstanceKlass::cast(k);
3383 if (!ik->is_initialized()) ik->initialize(CHECK_0);
3384 return ik->allocate_instance(THREAD);
3385 }
3386
3387
3388 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3389 oop box = initialize_and_allocate(type, CHECK_0);
3390 if (box == NULL) return NULL;
3391 switch (type) {
3392 case T_BOOLEAN:
3393 box->bool_field_put(value_offset, value->z);
3394 break;
3395 case T_CHAR:
3396 box->char_field_put(value_offset, value->c);
3397 break;
3398 case T_FLOAT:
3399 box->float_field_put(value_offset, value->f);
3400 break;
3401 case T_DOUBLE:
3402 box->double_field_put(long_value_offset, value->d);
3403 break;
3404 case T_BYTE:
3405 box->byte_field_put(value_offset, value->b);
3406 break;
3407 case T_SHORT:
3408 box->short_field_put(value_offset, value->s);
3409 break;
3410 case T_INT:
3411 box->int_field_put(value_offset, value->i);
3412 break;
3413 case T_LONG:
3414 box->long_field_put(long_value_offset, value->j);
3415 break;
3416 default:
3417 return NULL;
3418 }
3419 return box;
3420 }
3421
3422
3423 BasicType java_lang_boxing_object::basic_type(oop box) {
3424 if (box == NULL) return T_ILLEGAL;
3425 BasicType type = SystemDictionary::box_klass_type(box->klass());
3426 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3427 return T_ILLEGAL;
3428 return type;
3429 }
3430
3431
3432 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3433 BasicType type = SystemDictionary::box_klass_type(box->klass());
3434 switch (type) {
3435 case T_BOOLEAN:
3436 value->z = box->bool_field(value_offset);
3437 break;
3438 case T_CHAR:
3439 value->c = box->char_field(value_offset);
3440 break;
3441 case T_FLOAT:
3442 value->f = box->float_field(value_offset);
3443 break;
3444 case T_DOUBLE:
3445 value->d = box->double_field(long_value_offset);
3446 break;
3447 case T_BYTE:
3448 value->b = box->byte_field(value_offset);
3449 break;
3450 case T_SHORT:
3451 value->s = box->short_field(value_offset);
3452 break;
3453 case T_INT:
3454 value->i = box->int_field(value_offset);
3455 break;
3456 case T_LONG:
3457 value->j = box->long_field(long_value_offset);
3458 break;
3459 default:
3460 return T_ILLEGAL;
3461 } // end switch
3462 return type;
3463 }
3464
3465
3466 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3467 BasicType type = SystemDictionary::box_klass_type(box->klass());
3468 switch (type) {
3469 case T_BOOLEAN:
3470 box->bool_field_put(value_offset, value->z);
3471 break;
3472 case T_CHAR:
3473 box->char_field_put(value_offset, value->c);
3474 break;
3475 case T_FLOAT:
3476 box->float_field_put(value_offset, value->f);
3477 break;
3478 case T_DOUBLE:
3479 box->double_field_put(long_value_offset, value->d);
3480 break;
3481 case T_BYTE:
3482 box->byte_field_put(value_offset, value->b);
3483 break;
3484 case T_SHORT:
3485 box->short_field_put(value_offset, value->s);
3486 break;
3487 case T_INT:
3488 box->int_field_put(value_offset, value->i);
3489 break;
3490 case T_LONG:
3491 box->long_field_put(long_value_offset, value->j);
3492 break;
3493 default:
3494 return T_ILLEGAL;
3495 } // end switch
3496 return type;
3497 }
3498
3499
3500 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3501 switch (type) {
3502 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3503 case T_CHAR: st->print("%d", value->c); break;
3504 case T_BYTE: st->print("%d", value->b); break;
3505 case T_SHORT: st->print("%d", value->s); break;
3506 case T_INT: st->print("%d", value->i); break;
3507 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3508 case T_FLOAT: st->print("%f", value->f); break;
3509 case T_DOUBLE: st->print("%lf", value->d); break;
3510 default: st->print("type %d?", type); break;
3511 }
3512 }
3513
3514 // Support for java_lang_ref_Reference
3515
3516 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3517 assert(obj != NULL, "sanity");
3518 if (offset != java_lang_ref_Reference::referent_offset) {
3519 return false;
3520 }
3521
3522 Klass* k = obj->klass();
3523 if (!k->is_instance_klass()) {
3524 return false;
3525 }
3526
3527 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3528 bool is_reference = ik->reference_type() != REF_NONE;
3529 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3530 return is_reference;
3531 }
3532
3533 // Support for java_lang_ref_SoftReference
3534 //
3535
3536 #define SOFTREFERENCE_FIELDS_DO(macro) \
3537 macro(timestamp_offset, k, "timestamp", long_signature, false); \
3538 macro(static_clock_offset, k, "clock", long_signature, true)
3539
3540 void java_lang_ref_SoftReference::compute_offsets() {
3541 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3542 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3543 }
3544
3545 #if INCLUDE_CDS
3546 void java_lang_ref_SoftReference::serialize(SerializeClosure* f) {
3547 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3548 }
3549 #endif
3550
3551 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3552 return ref->long_field(timestamp_offset);
3553 }
3554
3555 jlong java_lang_ref_SoftReference::clock() {
3556 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3557 oop base = ik->static_field_base_raw();
3558 return base->long_field(static_clock_offset);
3559 }
3560
3561 void java_lang_ref_SoftReference::set_clock(jlong value) {
3562 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3563 oop base = ik->static_field_base_raw();
3564 base->long_field_put(static_clock_offset, value);
3565 }
3566
3567 // Support for java_lang_invoke_DirectMethodHandle
3568
3569 int java_lang_invoke_DirectMethodHandle::_member_offset;
3570
3571 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3572 oop member_name = NULL;
3573 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3574 "a DirectMethodHandle oop is expected");
3575 return dmh->obj_field(member_offset_in_bytes());
3576 }
3577
3578 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3579 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3580
3581 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3582 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3583 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3584 }
3585
3586 #if INCLUDE_CDS
3587 void java_lang_invoke_DirectMethodHandle::serialize(SerializeClosure* f) {
3588 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3589 }
3590 #endif
3591
3592 // Support for java_lang_invoke_MethodHandle
3593
3594 int java_lang_invoke_MethodHandle::_type_offset;
3595 int java_lang_invoke_MethodHandle::_form_offset;
3596
3597 int java_lang_invoke_MemberName::_clazz_offset;
3598 int java_lang_invoke_MemberName::_name_offset;
3599 int java_lang_invoke_MemberName::_type_offset;
3600 int java_lang_invoke_MemberName::_flags_offset;
3601 int java_lang_invoke_MemberName::_method_offset;
3602 int java_lang_invoke_MemberName::_vmindex_offset;
3603
3604 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3605 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3606
3607 int java_lang_invoke_LambdaForm::_vmentry_offset;
3608
3609 #define METHODHANDLE_FIELDS_DO(macro) \
3610 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3611 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3612
3613 void java_lang_invoke_MethodHandle::compute_offsets() {
3614 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3615 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3616 }
3617
3618 #if INCLUDE_CDS
3619 void java_lang_invoke_MethodHandle::serialize(SerializeClosure* f) {
3620 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3621 }
3622 #endif
3623
3624 #define MEMBERNAME_FIELDS_DO(macro) \
3625 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3626 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3627 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3628 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3629 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3630
3631 void java_lang_invoke_MemberName::compute_offsets() {
3632 InstanceKlass* k = SystemDictionary::MemberName_klass();
3633 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3634 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3635 }
3636
3637 #if INCLUDE_CDS
3638 void java_lang_invoke_MemberName::serialize(SerializeClosure* f) {
3639 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3640 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3641 }
3642 #endif
3643
3644 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3645 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3646 assert(k != NULL, "jdk mismatch");
3647 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3648 }
3649
3650 #if INCLUDE_CDS
3651 void java_lang_invoke_ResolvedMethodName::serialize(SerializeClosure* f) {
3652 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3653 }
3654 #endif
3655
3656 #define LAMBDAFORM_FIELDS_DO(macro) \
3657 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3658
3659 void java_lang_invoke_LambdaForm::compute_offsets() {
3660 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3661 assert (k != NULL, "jdk mismatch");
3662 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3663 }
3664
3665 #if INCLUDE_CDS
3666 void java_lang_invoke_LambdaForm::serialize(SerializeClosure* f) {
3667 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3668 }
3669 #endif
3670
3671 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3672 return obj != NULL && is_subclass(obj->klass());
3673 }
3674
3675
3676 oop java_lang_invoke_MethodHandle::type(oop mh) {
3677 return mh->obj_field(_type_offset);
3678 }
3679
3680 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3681 mh->obj_field_put(_type_offset, mtype);
3682 }
3683
3684 oop java_lang_invoke_MethodHandle::form(oop mh) {
3685 assert(_form_offset != 0, "");
3686 return mh->obj_field(_form_offset);
3687 }
3688
3689 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3690 assert(_form_offset != 0, "");
3691 mh->obj_field_put(_form_offset, lform);
3692 }
3693
3694 /// MemberName accessors
3695
3696 oop java_lang_invoke_MemberName::clazz(oop mname) {
3697 assert(is_instance(mname), "wrong type");
3698 return mname->obj_field(_clazz_offset);
3699 }
3700
3701 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3702 assert(is_instance(mname), "wrong type");
3703 mname->obj_field_put(_clazz_offset, clazz);
3704 }
3705
3706 oop java_lang_invoke_MemberName::name(oop mname) {
3707 assert(is_instance(mname), "wrong type");
3708 return mname->obj_field(_name_offset);
3709 }
3710
3711 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3712 assert(is_instance(mname), "wrong type");
3713 mname->obj_field_put(_name_offset, name);
3714 }
3715
3716 oop java_lang_invoke_MemberName::type(oop mname) {
3717 assert(is_instance(mname), "wrong type");
3718 return mname->obj_field(_type_offset);
3719 }
3720
3721 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3722 assert(is_instance(mname), "wrong type");
3723 mname->obj_field_put(_type_offset, type);
3724 }
3725
3726 int java_lang_invoke_MemberName::flags(oop mname) {
3727 assert(is_instance(mname), "wrong type");
3728 return mname->int_field(_flags_offset);
3729 }
3730
3731 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3732 assert(is_instance(mname), "wrong type");
3733 mname->int_field_put(_flags_offset, flags);
3734 }
3735
3736
3737 // Return vmtarget from ResolvedMethodName method field through indirection
3738 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3739 assert(is_instance(mname), "wrong type");
3740 oop method = mname->obj_field(_method_offset);
3741 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3742 }
3743
3744 bool java_lang_invoke_MemberName::is_method(oop mname) {
3745 assert(is_instance(mname), "must be MemberName");
3746 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3747 }
3748
3749 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3750 assert(is_instance(mname), "wrong type");
3751 mname->obj_field_put(_method_offset, resolved_method);
3752 }
3753
3754 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3755 assert(is_instance(mname), "wrong type");
3756 return (intptr_t) mname->address_field(_vmindex_offset);
3757 }
3758
3759 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3760 assert(is_instance(mname), "wrong type");
3761 mname->address_field_put(_vmindex_offset, (address) index);
3762 }
3763
3764
3765 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3766 assert(is_instance(resolved_method), "wrong type");
3767 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3768 assert(m->is_method(), "must be");
3769 return m;
3770 }
3771
3772 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3773 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3774 assert(is_instance(resolved_method), "wrong type");
3775 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3776 }
3777
3778 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3779 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3780 oop resolved_method = ResolvedMethodTable::find_method(m());
3781 if (resolved_method == NULL) {
3782 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3783 if (!k->is_initialized()) {
3784 k->initialize(CHECK_NULL);
3785 }
3786 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3787 new_resolved_method->address_field_put(_vmtarget_offset, (address)m());
3788 // Add a reference to the loader (actually mirror because anonymous classes will not have
3789 // distinct loaders) to ensure the metadata is kept alive.
3790 // This mirror may be different than the one in clazz field.
3791 new_resolved_method->obj_field_put(_vmholder_offset, m->method_holder()->java_mirror());
3792 resolved_method = ResolvedMethodTable::add_method(Handle(THREAD, new_resolved_method));
3793 }
3794 return resolved_method;
3795 }
3796
3797 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3798 assert(is_instance(lform), "wrong type");
3799 return lform->obj_field(_vmentry_offset);
3800 }
3801
3802
3803 // Support for java_lang_invoke_MethodType
3804
3805 int java_lang_invoke_MethodType::_rtype_offset;
3806 int java_lang_invoke_MethodType::_ptypes_offset;
3807
3808 #define METHODTYPE_FIELDS_DO(macro) \
3809 macro(_rtype_offset, k, "rtype", class_signature, false); \
3810 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3811
3812 void java_lang_invoke_MethodType::compute_offsets() {
3813 InstanceKlass* k = SystemDictionary::MethodType_klass();
3814 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3815 }
3816
3817 #if INCLUDE_CDS
3818 void java_lang_invoke_MethodType::serialize(SerializeClosure* f) {
3819 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3820 }
3821 #endif
3822
3823 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3824 st->print("(");
3825 objArrayOop pts = ptypes(mt);
3826 for (int i = 0, limit = pts->length(); i < limit; i++) {
3827 java_lang_Class::print_signature(pts->obj_at(i), st);
3828 }
3829 st->print(")");
3830 java_lang_Class::print_signature(rtype(mt), st);
3831 }
3832
3833 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3834 ResourceMark rm;
3835 stringStream buffer(128);
3836 print_signature(mt, &buffer);
3837 const char* sigstr = buffer.base();
3838 int siglen = (int) buffer.size();
3839 Symbol *name;
3840 if (!intern_if_not_found) {
3841 name = SymbolTable::probe(sigstr, siglen);
3842 } else {
3843 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3844 }
3845 return name;
3846 }
3847
3848 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3849 if (oopDesc::equals(mt1, mt2))
3850 return true;
3851 if (!oopDesc::equals(rtype(mt1), rtype(mt2)))
3852 return false;
3853 if (ptype_count(mt1) != ptype_count(mt2))
3854 return false;
3855 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3856 if (!oopDesc::equals(ptype(mt1, i), ptype(mt2, i)))
3857 return false;
3858 }
3859 return true;
3860 }
3861
3862 oop java_lang_invoke_MethodType::rtype(oop mt) {
3863 assert(is_instance(mt), "must be a MethodType");
3864 return mt->obj_field(_rtype_offset);
3865 }
3866
3867 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3868 assert(is_instance(mt), "must be a MethodType");
3869 return (objArrayOop) mt->obj_field(_ptypes_offset);
3870 }
3871
3872 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3873 return ptypes(mt)->obj_at(idx);
3874 }
3875
3876 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3877 return ptypes(mt)->length();
3878 }
3879
3880 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3881 objArrayOop pts = ptypes(mt);
3882 int count = pts->length();
3883 int slots = 0;
3884 for (int i = 0; i < count; i++) {
3885 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3886 slots += type2size[bt];
3887 }
3888 return slots;
3889 }
3890
3891 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3892 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3893 return type2size[bt];
3894 }
3895
3896
3897 // Support for java_lang_invoke_CallSite
3898
3899 int java_lang_invoke_CallSite::_target_offset;
3900 int java_lang_invoke_CallSite::_context_offset;
3901
3902 #define CALLSITE_FIELDS_DO(macro) \
3903 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
3904 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3905
3906 void java_lang_invoke_CallSite::compute_offsets() {
3907 InstanceKlass* k = SystemDictionary::CallSite_klass();
3908 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3909 }
3910
3911 #if INCLUDE_CDS
3912 void java_lang_invoke_CallSite::serialize(SerializeClosure* f) {
3913 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3914 }
3915 #endif
3916
3917 oop java_lang_invoke_CallSite::context(oop call_site) {
3918 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3919
3920 oop dep_oop = call_site->obj_field(_context_offset);
3921 return dep_oop;
3922 }
3923
3924 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3925
3926 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3927
3928 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3929 InstanceKlass* k = SystemDictionary::Context_klass();
3930 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3931 }
3932
3933 #if INCLUDE_CDS
3934 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize(SerializeClosure* f) {
3935 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3936 }
3937 #endif
3938
3939 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3940 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3941 intptr_t* vmdeps_addr = (intptr_t*)call_site->field_addr(_vmdependencies_offset);
3942 DependencyContext dep_ctx(vmdeps_addr);
3943 return dep_ctx;
3944 }
3945
3946 // Support for java_security_AccessControlContext
3947
3948 int java_security_AccessControlContext::_context_offset = 0;
3949 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3950 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3951 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3952
3953 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
3954 macro(_context_offset, k, "context", protectiondomain_signature, false); \
3955 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
3956 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
3957 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
3958
3959 void java_security_AccessControlContext::compute_offsets() {
3960 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3961 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
3962 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3963 }
3964
3965 #if INCLUDE_CDS
3966 void java_security_AccessControlContext::serialize(SerializeClosure* f) {
3967 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3968 }
3969 #endif
3970
3971 bool java_security_AccessControlContext::is_authorized(Handle context) {
3972 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3973 assert(_isAuthorized_offset != -1, "should be set");
3974 return context->bool_field(_isAuthorized_offset) != 0;
3975 }
3976
3977 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3978 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3979 // Ensure klass is initialized
3980 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3981 // Allocate result
3982 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3983 // Fill in values
3984 result->obj_field_put(_context_offset, context());
3985 result->obj_field_put(_privilegedContext_offset, privileged_context());
3986 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3987 // whitelist AccessControlContexts created by the JVM if present
3988 if (_isAuthorized_offset != -1) {
3989 result->bool_field_put(_isAuthorized_offset, true);
3990 }
3991 return result;
3992 }
3993
3994
3995 // Support for java_lang_ClassLoader
3996
3997 bool java_lang_ClassLoader::offsets_computed = false;
3998 int java_lang_ClassLoader::_loader_data_offset = -1;
3999 int java_lang_ClassLoader::parallelCapable_offset = -1;
4000 int java_lang_ClassLoader::name_offset = -1;
4001 int java_lang_ClassLoader::nameAndId_offset = -1;
4002 int java_lang_ClassLoader::unnamedModule_offset = -1;
4003
4004 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4005 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4006 return HeapAccess<>::load_at(loader, _loader_data_offset);
4007 }
4008
4009 ClassLoaderData* java_lang_ClassLoader::cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data) {
4010 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4011 return HeapAccess<>::atomic_cmpxchg_at(new_data, loader, _loader_data_offset, expected_data);
4012 }
4013
4014 #define CLASSLOADER_FIELDS_DO(macro) \
4015 macro(parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4016 macro(name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4017 macro(nameAndId_offset, k1, "nameAndId", string_signature, false); \
4018 macro(unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4019 macro(parent_offset, k1, "parent", classloader_signature, false)
4020
4021 void java_lang_ClassLoader::compute_offsets() {
4022 assert(!offsets_computed, "offsets should be initialized only once");
4023 offsets_computed = true;
4024
4025 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4026 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4027
4028 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4029 }
4030
4031 #if INCLUDE_CDS
4032 void java_lang_ClassLoader::serialize(SerializeClosure* f) {
4033 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4034 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4035 }
4036 #endif
4037
4038 oop java_lang_ClassLoader::parent(oop loader) {
4039 assert(is_instance(loader), "loader must be oop");
4040 return loader->obj_field(parent_offset);
4041 }
4042
4043 // Returns the name field of this class loader. If the name field has not
4044 // been set, null will be returned.
4045 oop java_lang_ClassLoader::name(oop loader) {
4046 assert(is_instance(loader), "loader must be oop");
4047 return loader->obj_field(name_offset);
4048 }
4049
4050 // Returns the nameAndId field of this class loader. The format is
4051 // as follows:
4052 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4053 // If the defining loader has no name then <qualified-class-name> @<id>
4054 // If built-in loader, then omit '@<id>' as there is only one instance.
4055 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4056 oop java_lang_ClassLoader::nameAndId(oop loader) {
4057 assert(is_instance(loader), "loader must be oop");
4058 return loader->obj_field(nameAndId_offset);
4059 }
4060
4061 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4062 assert(is_instance(loader), "loader must be oop");
4063 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4064 oop acl = loader;
4065 debug_only(jint loop_count = 0);
4066 // This loop taken verbatim from ClassLoader.java:
4067 do {
4068 acl = parent(acl);
4069 if (oopDesc::equals(cl, acl)) {
4070 return true;
4071 }
4072 assert(++loop_count > 0, "loop_count overflow");
4073 } while (acl != NULL);
4074 return false;
4075 }
4076
4077 bool java_lang_ClassLoader::is_instance(oop obj) {
4078 return obj != NULL && is_subclass(obj->klass());
4079 }
4080
4081
4082 // For class loader classes, parallelCapable defined
4083 // based on non-null field
4084 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4085 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4086 if (parallelCapable_offset == -1) {
4087 // Default for backward compatibility is false
4088 return false;
4089 }
4090 return (class_loader->obj_field(parallelCapable_offset) != NULL);
4091 }
4092
4093 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4094 // Fix for 4474172; see evaluation for more details
4095 loader = non_reflection_class_loader(loader);
4096
4097 oop cl = SystemDictionary::java_system_loader();
4098 while(cl != NULL) {
4099 if (oopDesc::equals(cl, loader)) return true;
4100 cl = parent(cl);
4101 }
4102 return false;
4103 }
4104
4105 // Return true if this is one of the class loaders associated with
4106 // the generated bytecodes for reflection.
4107 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4108 if (loader != NULL) {
4109 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4110 // This might be null in non-1.4 JDKs
4111 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4112 }
4113 return false;
4114 }
4115
4116 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4117 // See whether this is one of the class loaders associated with
4118 // the generated bytecodes for reflection, and if so, "magically"
4119 // delegate to its parent to prevent class loading from occurring
4120 // in places where applications using reflection didn't expect it.
4121 if (is_reflection_class_loader(loader)) {
4122 return parent(loader);
4123 }
4124 return loader;
4125 }
4126
4127 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4128 assert(is_instance(loader), "loader must be oop");
4129 return loader->obj_field(unnamedModule_offset);
4130 }
4131
4132 // Caller needs ResourceMark.
4133 const char* java_lang_ClassLoader::describe_external(const oop loader) {
4134 ClassLoaderData *cld = ClassLoaderData::class_loader_data(loader);
4135 const char* name = cld->loader_name_and_id();
4136
4137 // bootstrap loader
4138 if (loader == NULL) {
4139 return name;
4140 }
4141
4142 bool well_known_loader = SystemDictionary::is_system_class_loader(loader) ||
4143 SystemDictionary::is_platform_class_loader(loader);
4144
4145 stringStream ss;
4146 ss.print("%s (instance of %s", name, loader->klass()->external_name());
4147 if (!well_known_loader) {
4148 oop pl = java_lang_ClassLoader::parent(loader);
4149 ClassLoaderData *pl_cld = ClassLoaderData::class_loader_data(pl);
4150 const char* parentName = pl_cld->loader_name_and_id();
4151 if (pl != NULL) {
4152 ss.print(", child of %s %s", parentName, pl->klass()->external_name());
4153 } else {
4154 // bootstrap loader
4155 ss.print(", child of %s", parentName);
4156 }
4157 }
4158 ss.print(")");
4159
4160 return ss.as_string();
4161 }
4162
4163 // Support for java_lang_System
4164 //
4165 #define SYSTEM_FIELDS_DO(macro) \
4166 macro(static_in_offset, k, "in", input_stream_signature, true); \
4167 macro(static_out_offset, k, "out", print_stream_signature, true); \
4168 macro(static_err_offset, k, "err", print_stream_signature, true); \
4169 macro(static_security_offset, k, "security", security_manager_signature, true)
4170
4171 void java_lang_System::compute_offsets() {
4172 InstanceKlass* k = SystemDictionary::System_klass();
4173 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4174 }
4175
4176 #if INCLUDE_CDS
4177 void java_lang_System::serialize(SerializeClosure* f) {
4178 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4179 }
4180 #endif
4181
4182 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4183 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4184 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4185
4186
4187 bool java_lang_System::has_security_manager() {
4188 InstanceKlass* ik = SystemDictionary::System_klass();
4189 oop base = ik->static_field_base_raw();
4190 return base->obj_field(static_security_offset) != NULL;
4191 }
4192
4193 int java_lang_Class::_klass_offset;
4194 int java_lang_Class::_array_klass_offset;
4195 int java_lang_Class::_oop_size_offset;
4196 int java_lang_Class::_static_oop_field_count_offset;
4197 int java_lang_Class::_class_loader_offset;
4198 int java_lang_Class::_module_offset;
4199 int java_lang_Class::_protection_domain_offset;
4200 int java_lang_Class::_component_mirror_offset;
4201 int java_lang_Class::_init_lock_offset;
4202 int java_lang_Class::_signers_offset;
4203 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4204 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4205 int java_lang_Throwable::backtrace_offset;
4206 int java_lang_Throwable::detailMessage_offset;
4207 int java_lang_Throwable::stackTrace_offset;
4208 int java_lang_Throwable::depth_offset;
4209 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4210 int java_lang_reflect_AccessibleObject::override_offset;
4211 int java_lang_reflect_Method::clazz_offset;
4212 int java_lang_reflect_Method::name_offset;
4213 int java_lang_reflect_Method::returnType_offset;
4214 int java_lang_reflect_Method::parameterTypes_offset;
4215 int java_lang_reflect_Method::exceptionTypes_offset;
4216 int java_lang_reflect_Method::slot_offset;
4217 int java_lang_reflect_Method::modifiers_offset;
4218 int java_lang_reflect_Method::signature_offset;
4219 int java_lang_reflect_Method::annotations_offset;
4220 int java_lang_reflect_Method::parameter_annotations_offset;
4221 int java_lang_reflect_Method::annotation_default_offset;
4222 int java_lang_reflect_Method::type_annotations_offset;
4223 int java_lang_reflect_Constructor::clazz_offset;
4224 int java_lang_reflect_Constructor::parameterTypes_offset;
4225 int java_lang_reflect_Constructor::exceptionTypes_offset;
4226 int java_lang_reflect_Constructor::slot_offset;
4227 int java_lang_reflect_Constructor::modifiers_offset;
4228 int java_lang_reflect_Constructor::signature_offset;
4229 int java_lang_reflect_Constructor::annotations_offset;
4230 int java_lang_reflect_Constructor::parameter_annotations_offset;
4231 int java_lang_reflect_Constructor::type_annotations_offset;
4232 int java_lang_reflect_Field::clazz_offset;
4233 int java_lang_reflect_Field::name_offset;
4234 int java_lang_reflect_Field::type_offset;
4235 int java_lang_reflect_Field::slot_offset;
4236 int java_lang_reflect_Field::modifiers_offset;
4237 int java_lang_reflect_Field::signature_offset;
4238 int java_lang_reflect_Field::annotations_offset;
4239 int java_lang_reflect_Field::type_annotations_offset;
4240 int java_lang_reflect_Parameter::name_offset;
4241 int java_lang_reflect_Parameter::modifiers_offset;
4242 int java_lang_reflect_Parameter::index_offset;
4243 int java_lang_reflect_Parameter::executable_offset;
4244 int java_lang_boxing_object::value_offset;
4245 int java_lang_boxing_object::long_value_offset;
4246 int java_lang_ref_Reference::referent_offset;
4247 int java_lang_ref_Reference::queue_offset;
4248 int java_lang_ref_Reference::next_offset;
4249 int java_lang_ref_Reference::discovered_offset;
4250 int java_lang_ref_SoftReference::timestamp_offset;
4251 int java_lang_ref_SoftReference::static_clock_offset;
4252 int java_lang_ClassLoader::parent_offset;
4253 int java_lang_System::static_in_offset;
4254 int java_lang_System::static_out_offset;
4255 int java_lang_System::static_err_offset;
4256 int java_lang_System::static_security_offset;
4257 int java_lang_StackTraceElement::methodName_offset;
4258 int java_lang_StackTraceElement::fileName_offset;
4259 int java_lang_StackTraceElement::lineNumber_offset;
4260 int java_lang_StackTraceElement::moduleName_offset;
4261 int java_lang_StackTraceElement::moduleVersion_offset;
4262 int java_lang_StackTraceElement::classLoaderName_offset;
4263 int java_lang_StackTraceElement::declaringClass_offset;
4264 int java_lang_StackTraceElement::declaringClassObject_offset;
4265 int java_lang_StackFrameInfo::_memberName_offset;
4266 int java_lang_StackFrameInfo::_bci_offset;
4267 int java_lang_StackFrameInfo::_version_offset;
4268 int java_lang_LiveStackFrameInfo::_monitors_offset;
4269 int java_lang_LiveStackFrameInfo::_locals_offset;
4270 int java_lang_LiveStackFrameInfo::_operands_offset;
4271 int java_lang_LiveStackFrameInfo::_mode_offset;
4272 int java_lang_AssertionStatusDirectives::classes_offset;
4273 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4274 int java_lang_AssertionStatusDirectives::packages_offset;
4275 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4276 int java_lang_AssertionStatusDirectives::deflt_offset;
4277 int java_nio_Buffer::_limit_offset;
4278 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4279 int reflect_ConstantPool::_oop_offset;
4280 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4281 int jdk_internal_module_ArchivedModuleGraph::_archivedSystemModules_offset;
4282 int jdk_internal_module_ArchivedModuleGraph::_archivedModuleFinder_offset;
4283 int jdk_internal_module_ArchivedModuleGraph::_archivedMainModule_offset;
4284
4285 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4286 macro(declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4287 macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4288 macro(moduleName_offset, k, "moduleName", string_signature, false); \
4289 macro(moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4290 macro(declaringClass_offset, k, "declaringClass", string_signature, false); \
4291 macro(methodName_offset, k, "methodName", string_signature, false); \
4292 macro(fileName_offset, k, "fileName", string_signature, false); \
4293 macro(lineNumber_offset, k, "lineNumber", int_signature, false)
4294
4295 // Support for java_lang_StackTraceElement
4296 void java_lang_StackTraceElement::compute_offsets() {
4297 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4298 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4299 }
4300
4301 #if INCLUDE_CDS
4302 void java_lang_StackTraceElement::serialize(SerializeClosure* f) {
4303 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4304 }
4305 #endif
4306
4307 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4308 element->obj_field_put(fileName_offset, value);
4309 }
4310
4311 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4312 element->obj_field_put(declaringClass_offset, value);
4313 }
4314
4315 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4316 element->obj_field_put(methodName_offset, value);
4317 }
4318
4319 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4320 element->int_field_put(lineNumber_offset, value);
4321 }
4322
4323 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4324 element->obj_field_put(moduleName_offset, value);
4325 }
4326
4327 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4328 element->obj_field_put(moduleVersion_offset, value);
4329 }
4330
4331 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4332 element->obj_field_put(classLoaderName_offset, value);
4333 }
4334
4335 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4336 element->obj_field_put(declaringClassObject_offset, value);
4337 }
4338
4339 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4340 element->short_field_put(_version_offset, value);
4341 }
4342
4343 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4344 element->int_field_put(_bci_offset, value);
4345 }
4346
4347 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4348 element->obj_field_put(_monitors_offset, value);
4349 }
4350
4351 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4352 element->obj_field_put(_locals_offset, value);
4353 }
4354
4355 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4356 element->obj_field_put(_operands_offset, value);
4357 }
4358
4359 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4360 element->int_field_put(_mode_offset, value);
4361 }
4362
4363 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4364 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4365 macro(classes_offset, k, "classes", string_array_signature, false); \
4366 macro(classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4367 macro(packages_offset, k, "packages", string_array_signature, false); \
4368 macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4369 macro(deflt_offset, k, "deflt", bool_signature, false)
4370
4371 void java_lang_AssertionStatusDirectives::compute_offsets() {
4372 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4373 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4374 }
4375
4376 #if INCLUDE_CDS
4377 void java_lang_AssertionStatusDirectives::serialize(SerializeClosure* f) {
4378 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4379 }
4380 #endif
4381
4382 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4383 o->obj_field_put(classes_offset, val);
4384 }
4385
4386 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4387 o->obj_field_put(classEnabled_offset, val);
4388 }
4389
4390 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4391 o->obj_field_put(packages_offset, val);
4392 }
4393
4394 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4395 o->obj_field_put(packageEnabled_offset, val);
4396 }
4397
4398 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4399 o->bool_field_put(deflt_offset, val);
4400 }
4401
4402
4403 // Support for intrinsification of java.nio.Buffer.checkIndex
4404 int java_nio_Buffer::limit_offset() {
4405 return _limit_offset;
4406 }
4407
4408 #define BUFFER_FIELDS_DO(macro) \
4409 macro(_limit_offset, k, "limit", int_signature, false)
4410
4411 void java_nio_Buffer::compute_offsets() {
4412 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4413 assert(k != NULL, "must be loaded in 1.4+");
4414 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4415 }
4416
4417 #if INCLUDE_CDS
4418 void java_nio_Buffer::serialize(SerializeClosure* f) {
4419 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4420 }
4421 #endif
4422
4423 #define AOS_FIELDS_DO(macro) \
4424 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4425
4426 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4427 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4428 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4429 }
4430
4431 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4432 assert(_owner_offset != 0, "Must be initialized");
4433 return obj->obj_field(_owner_offset);
4434 }
4435
4436 #if INCLUDE_CDS
4437 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize(SerializeClosure* f) {
4438 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4439 }
4440 #endif
4441
4442 static int member_offset(int hardcoded_offset) {
4443 return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4444 }
4445
4446 #define MODULEBOOTSTRAP_FIELDS_DO(macro) \
4447 macro(_archivedSystemModules_offset, k, "archivedSystemModules", systemModules_signature, true); \
4448 macro(_archivedModuleFinder_offset, k, "archivedModuleFinder", moduleFinder_signature, true); \
4449 macro(_archivedMainModule_offset, k, "archivedMainModule", string_signature, true)
4450
4451 void jdk_internal_module_ArchivedModuleGraph::compute_offsets() {
4452 InstanceKlass* k = SystemDictionary::ArchivedModuleGraph_klass();
4453 assert(k != NULL, "must be loaded");
4454 MODULEBOOTSTRAP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4455 }
4456
4457 #if INCLUDE_CDS
4458 void jdk_internal_module_ArchivedModuleGraph::serialize(SerializeClosure* f) {
4459 MODULEBOOTSTRAP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4460 }
4461 #endif
4462
4463 // Compute hard-coded offsets
4464 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4465 // are not available to determine the offset_of_static_fields.
4466 void JavaClasses::compute_hard_coded_offsets() {
4467
4468 // java_lang_boxing_object
4469 java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
4470 java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4471
4472 // java_lang_ref_Reference
4473 java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
4474 java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
4475 java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
4476 java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4477 }
4478
4479
4480 // Compute non-hard-coded field offsets of all the classes in this file
4481 void JavaClasses::compute_offsets() {
4482 if (UseSharedSpaces) {
4483 return; // field offsets are loaded from archive
4484 }
4485
4486 // java_lang_Class::compute_offsets was called earlier in bootstrap
4487 java_lang_System::compute_offsets();
4488 java_lang_ClassLoader::compute_offsets();
4489 java_lang_Throwable::compute_offsets();
4490 java_lang_Thread::compute_offsets();
4491 java_lang_ThreadGroup::compute_offsets();
4492 java_lang_AssertionStatusDirectives::compute_offsets();
4493 java_lang_ref_SoftReference::compute_offsets();
4494 java_lang_invoke_MethodHandle::compute_offsets();
4495 java_lang_invoke_DirectMethodHandle::compute_offsets();
4496 java_lang_invoke_MemberName::compute_offsets();
4497 java_lang_invoke_ResolvedMethodName::compute_offsets();
4498 java_lang_invoke_LambdaForm::compute_offsets();
4499 java_lang_invoke_MethodType::compute_offsets();
4500 java_lang_invoke_CallSite::compute_offsets();
4501 java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets();
4502 java_security_AccessControlContext::compute_offsets();
4503 // Initialize reflection classes. The layouts of these classes
4504 // changed with the new reflection implementation in JDK 1.4, and
4505 // since the Universe doesn't know what JDK version it is until this
4506 // point we defer computation of these offsets until now.
4507 java_lang_reflect_AccessibleObject::compute_offsets();
4508 java_lang_reflect_Method::compute_offsets();
4509 java_lang_reflect_Constructor::compute_offsets();
4510 java_lang_reflect_Field::compute_offsets();
4511 java_nio_Buffer::compute_offsets();
4512 reflect_ConstantPool::compute_offsets();
4513 reflect_UnsafeStaticFieldAccessorImpl::compute_offsets();
4514 java_lang_reflect_Parameter::compute_offsets();
4515 java_lang_Module::compute_offsets();
4516 java_lang_StackTraceElement::compute_offsets();
4517 java_lang_StackFrameInfo::compute_offsets();
4518 java_lang_LiveStackFrameInfo::compute_offsets();
4519 java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets();
4520
4521 jdk_internal_module_ArchivedModuleGraph::compute_offsets();
4522
4523 // generated interpreter code wants to know about the offsets we just computed:
4524 AbstractAssembler::update_delayed_values();
4525 }
4526
4527 #ifndef PRODUCT
4528
4529 // These functions exist to assert the validity of hard-coded field offsets to guard
4530 // against changes in the class files
4531
4532 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4533 EXCEPTION_MARK;
4534 fieldDescriptor fd;
4535 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
4536 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4537 InstanceKlass* ik = InstanceKlass::cast(k);
4538 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
4539 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
4540 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4541 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4542 return false;
4543 }
4544 if (fd.is_static()) {
4545 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4546 return false;
4547 }
4548 if (fd.offset() == hardcoded_offset ) {
4549 return true;
4550 } else {
4551 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4552 klass_name, field_name, hardcoded_offset, fd.offset());
4553 return false;
4554 }
4555 }
4556
4557 // Check the hard-coded field offsets of all the classes in this file
4558
4559 void JavaClasses::check_offsets() {
4560 bool valid = true;
4561
4562 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4563 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4564
4565 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4566 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4567
4568 // Boxed primitive objects (java_lang_boxing_object)
4569
4570 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4571 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4572 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4573 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4574 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4575 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4576 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4577 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4578
4579 // java.lang.ref.Reference
4580
4581 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4582 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4583 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4584 // Fake field
4585 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4586
4587 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4588 }
4589
4590 #endif // PRODUCT
4591
4592 int InjectedField::compute_offset() {
4593 InstanceKlass* ik = InstanceKlass::cast(klass());
4594 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4595 if (!may_be_java && !fs.access_flags().is_internal()) {
4596 // Only look at injected fields
4597 continue;
4598 }
4599 if (fs.name() == name() && fs.signature() == signature()) {
4600 return fs.offset();
4601 }
4602 }
4603 ResourceMark rm;
4604 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)" : "");
4605 #ifndef PRODUCT
4606 ik->print();
4607 tty->print_cr("all fields:");
4608 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4609 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4610 }
4611 #endif //PRODUCT
4612 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
4613 return -1;
4614 }
4615
4616 void javaClasses_init() {
4617 JavaClasses::compute_offsets();
4618 JavaClasses::check_offsets();
4619 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4620 }