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 "oops/valueArrayKlass.hpp"
53 #include "prims/resolvedMethodTable.hpp"
54 #include "runtime/fieldDescriptor.inline.hpp"
55 #include "runtime/frame.inline.hpp"
56 #include "runtime/handles.inline.hpp"
57 #include "runtime/interfaceSupport.inline.hpp"
58 #include "runtime/java.hpp"
59 #include "runtime/javaCalls.hpp"
60 #include "runtime/jniHandles.inline.hpp"
61 #include "runtime/safepoint.hpp"
62 #include "runtime/safepointVerifiers.hpp"
63 #include "runtime/thread.inline.hpp"
64 #include "runtime/vframe.inline.hpp"
65 #include "utilities/align.hpp"
66 #include "utilities/preserveException.hpp"
67 #if INCLUDE_JVMCI
68 #include "jvmci/jvmciJavaClasses.hpp"
69 #endif
70
71 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
72 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
73
74 #if INCLUDE_CDS
75 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
76 f->do_u4((u4*)&_##name##_offset);
77 #endif
78
79 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
80 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
81
82 InjectedField JavaClasses::_injected_fields[] = {
83 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
84 };
85
86 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
87 return _injected_fields[id].compute_offset();
88 }
89
90
91 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
92 *field_count = 0;
93
94 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
95 if (sid == vmSymbols::NO_SID) {
96 // Only well known classes can inject fields
97 return NULL;
98 }
99
100 int count = 0;
101 int start = -1;
102
103 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
104 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
105 count++; \
106 if (start == -1) start = klass##_##name##_enum; \
107 }
108 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
109 #undef LOOKUP_INJECTED_FIELD
110
111 if (start != -1) {
112 *field_count = count;
113 return _injected_fields + start;
114 }
115 return NULL;
116 }
117
118
119 // Helpful routine for computing field offsets at run time rather than hardcoding them
120 // Finds local fields only, including static fields. Static field offsets are from the
121 // beginning of the mirror.
122 static void compute_offset(int &dest_offset,
123 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
124 bool is_static = false) {
125 fieldDescriptor fd;
126 if (ik == NULL) {
127 ResourceMark rm;
128 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
129 vm_exit_during_initialization("Invalid layout of preloaded class");
130 }
131
132 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
133 ResourceMark rm;
134 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
135 name_symbol->as_C_string(), signature_symbol->as_C_string());
136 #ifndef PRODUCT
137 // Prints all fields and offsets
138 Log(class) lt;
139 LogStream ls(lt.error());
140 ik->print_on(&ls);
141 #endif //PRODUCT
142 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
143 }
144 dest_offset = fd.offset();
145 }
146
147 // Overloading to pass name as a string.
148 static void compute_offset(int& dest_offset, InstanceKlass* ik,
149 const char* name_string, Symbol* signature_symbol,
150 bool is_static = false) {
151 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
152 if (name == NULL) {
153 ResourceMark rm;
154 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
155 vm_exit_during_initialization("Invalid layout of preloaded class", ik->external_name());
156 }
157 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
158 }
159
160 // Same as above but for "optional" offsets that might not be present in certain JDK versions
161 // Old versions should be cleaned out since Hotspot only supports the current JDK, and this
162 // function should be removed.
163 static void
164 compute_optional_offset(int& dest_offset,
165 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol) {
166 fieldDescriptor fd;
167 if (ik->find_local_field(name_symbol, signature_symbol, &fd)) {
168 dest_offset = fd.offset();
169 }
170 }
171
172 int java_lang_String::value_offset = 0;
173 int java_lang_String::hash_offset = 0;
174 int java_lang_String::coder_offset = 0;
175
176 bool java_lang_String::initialized = false;
177
178 bool java_lang_String::is_instance(oop obj) {
179 return is_instance_inlined(obj);
180 }
181
182 #if INCLUDE_CDS
183 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
184 f->do_u4((u4*)&offset)
185
186 #define FIELD_SERIALIZE_OFFSET_OPTIONAL(offset, klass, name, signature) \
187 f->do_u4((u4*)&offset)
188 #endif
189
190 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
191 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
192
193 #define FIELD_COMPUTE_OFFSET_OPTIONAL(offset, klass, name, signature) \
194 compute_optional_offset(offset, klass, name, vmSymbols::signature())
195
196 #define STRING_FIELDS_DO(macro) \
197 macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
198 macro(hash_offset, k, "hash", int_signature, false); \
199 macro(coder_offset, k, "coder", byte_signature, false)
200
201 void java_lang_String::compute_offsets() {
202 if (initialized) {
203 return;
204 }
205
206 InstanceKlass* k = SystemDictionary::String_klass();
207 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
208
209 initialized = true;
210 }
211
212 #if INCLUDE_CDS
213 void java_lang_String::serialize_offsets(SerializeClosure* f) {
214 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
215 f->do_u4((u4*)&initialized);
216 }
217 #endif
218
219 class CompactStringsFixup : public FieldClosure {
220 private:
221 bool _value;
222
223 public:
224 CompactStringsFixup(bool value) : _value(value) {}
225
226 void do_field(fieldDescriptor* fd) {
227 if (fd->name() == vmSymbols::compact_strings_name()) {
228 oop mirror = fd->field_holder()->java_mirror();
229 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
230 assert(mirror != NULL, "String must have mirror already");
231 mirror->bool_field_put(fd->offset(), _value);
232 }
233 }
234 };
235
236 void java_lang_String::set_compact_strings(bool value) {
237 CompactStringsFixup fix(value);
238 InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
239 }
240
241 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
242 assert(initialized, "Must be initialized");
243 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
244
245 // Create the String object first, so there's a chance that the String
246 // and the char array it points to end up in the same cache line.
247 oop obj;
248 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
249
250 // Create the char array. The String object must be handlized here
251 // because GC can happen as a result of the allocation attempt.
252 Handle h_obj(THREAD, obj);
253 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
254 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
255
256 // Point the String at the char array
257 obj = h_obj();
258 set_value(obj, buffer);
259 // No need to zero the offset, allocation zero'ed the entire String object
260 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
261 return h_obj;
262 }
263
264 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) {
265 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
266 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
267 typeArrayOop buffer = value(h_obj());
268 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
269 if (is_latin1) {
270 for (int index = 0; index < length; index++) {
271 buffer->byte_at_put(index, (jbyte)unicode[index]);
272 }
273 } else {
274 for (int index = 0; index < length; index++) {
275 buffer->char_at_put(index, unicode[index]);
276 }
277 }
278
279 #ifdef ASSERT
280 {
281 ResourceMark rm;
282 char* expected = UNICODE::as_utf8(unicode, length);
283 char* actual = as_utf8_string(h_obj());
284 if (strcmp(expected, actual) != 0) {
285 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
286 ShouldNotReachHere();
287 }
288 }
289 #endif
290
291 return h_obj;
292 }
293
294 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) {
295 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
296 return h_obj();
297 }
298
299 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
300 if (utf8_str == NULL) {
301 return Handle();
302 }
303 bool has_multibyte, is_latin1;
304 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
305 if (!CompactStrings) {
306 has_multibyte = true;
307 is_latin1 = false;
308 }
309
310 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
311 if (length > 0) {
312 if (!has_multibyte) {
313 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
314 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
315 } else if (is_latin1) {
316 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
317 } else {
318 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
319 }
320 }
321
322 #ifdef ASSERT
323 // This check is too strict because the input string is not necessarily valid UTF8.
324 // For example, it may be created with arbitrary content via jni_NewStringUTF.
325 /*
326 {
327 ResourceMark rm;
328 const char* expected = utf8_str;
329 char* actual = as_utf8_string(h_obj());
330 if (strcmp(expected, actual) != 0) {
331 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
332 ShouldNotReachHere();
333 }
334 }
335 */
336 #endif
337
338 return h_obj;
339 }
340
341 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
342 Handle h_obj = create_from_str(utf8_str, CHECK_0);
343 return h_obj();
344 }
345
346 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
347 const char* utf8_str = (char*)symbol->bytes();
348 int utf8_len = symbol->utf8_length();
349
350 bool has_multibyte, is_latin1;
351 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
352 if (!CompactStrings) {
353 has_multibyte = true;
354 is_latin1 = false;
355 }
356
357 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
358 if (length > 0) {
359 if (!has_multibyte) {
360 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
361 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
362 } else if (is_latin1) {
363 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
364 } else {
365 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
366 }
367 }
368
369 #ifdef ASSERT
370 {
371 ResourceMark rm;
372 const char* expected = symbol->as_utf8();
373 char* actual = as_utf8_string(h_obj());
374 if (strncmp(expected, actual, utf8_len) != 0) {
375 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
376 ShouldNotReachHere();
377 }
378 }
379 #endif
380
381 return h_obj;
382 }
383
384 // Converts a C string to a Java String based on current encoding
385 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
386 assert(str != NULL, "bad arguments");
387
388 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
389 static to_java_string_fn_t _to_java_string_fn = NULL;
390
391 if (_to_java_string_fn == NULL) {
392 void *lib_handle = os::native_java_library();
393 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
394 if (_to_java_string_fn == NULL) {
395 fatal("NewStringPlatform missing");
396 }
397 }
398
399 jstring js = NULL;
400 { JavaThread* thread = (JavaThread*)THREAD;
401 assert(thread->is_Java_thread(), "must be java thread");
402 HandleMark hm(thread);
403 ThreadToNativeFromVM ttn(thread);
404 js = (_to_java_string_fn)(thread->jni_environment(), str);
405 }
406 return Handle(THREAD, JNIHandles::resolve(js));
407 }
408
409 // Converts a Java String to a native C string that can be used for
410 // native OS calls.
411 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
412 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
413 static to_platform_string_fn_t _to_platform_string_fn = NULL;
414
415 if (_to_platform_string_fn == NULL) {
416 void *lib_handle = os::native_java_library();
417 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
418 if (_to_platform_string_fn == NULL) {
419 fatal("GetStringPlatformChars missing");
420 }
421 }
422
423 char *native_platform_string;
424 { JavaThread* thread = (JavaThread*)THREAD;
425 assert(thread->is_Java_thread(), "must be java thread");
426 JNIEnv *env = thread->jni_environment();
427 jstring js = (jstring) JNIHandles::make_local(env, java_string());
428 bool is_copy;
429 HandleMark hm(thread);
430 ThreadToNativeFromVM ttn(thread);
431 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
432 assert(is_copy == JNI_TRUE, "is_copy value changed");
433 JNIHandles::destroy_local(js);
434 }
435 return native_platform_string;
436 }
437
438 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
439 oop obj = java_string();
440 // Typical usage is to convert all '/' to '.' in string.
441 typeArrayOop value = java_lang_String::value(obj);
442 int length = java_lang_String::length(obj);
443 bool is_latin1 = java_lang_String::is_latin1(obj);
444
445 // First check if any from_char exist
446 int index; // Declared outside, used later
447 for (index = 0; index < length; index++) {
448 jchar c = !is_latin1 ? value->char_at(index) :
449 ((jchar) value->byte_at(index)) & 0xff;
450 if (c == from_char) {
451 break;
452 }
453 }
454 if (index == length) {
455 // No from_char, so do not copy.
456 return java_string;
457 }
458
459 // Check if result string will be latin1
460 bool to_is_latin1 = false;
461
462 // Replacement char must be latin1
463 if (CompactStrings && UNICODE::is_latin1(to_char)) {
464 if (is_latin1) {
465 // Source string is latin1 as well
466 to_is_latin1 = true;
467 } else if (!UNICODE::is_latin1(from_char)) {
468 // We are replacing an UTF16 char. Scan string to
469 // check if result can be latin1 encoded.
470 to_is_latin1 = true;
471 for (index = 0; index < length; index++) {
472 jchar c = value->char_at(index);
473 if (c != from_char && !UNICODE::is_latin1(c)) {
474 to_is_latin1 = false;
475 break;
476 }
477 }
478 }
479 }
480
481 // Create new UNICODE (or byte) buffer. Must handlize value because GC
482 // may happen during String and char array creation.
483 typeArrayHandle h_value(THREAD, value);
484 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
485 typeArrayOop from_buffer = h_value();
486 typeArrayOop to_buffer = java_lang_String::value(string());
487
488 // Copy contents
489 for (index = 0; index < length; index++) {
490 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
491 ((jchar) from_buffer->byte_at(index)) & 0xff;
492 if (c == from_char) {
493 c = to_char;
494 }
495 if (!to_is_latin1) {
496 to_buffer->char_at_put(index, c);
497 } else {
498 to_buffer->byte_at_put(index, (jbyte) c);
499 }
500 }
501 return string;
502 }
503
504 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
505 typeArrayOop value = java_lang_String::value(java_string);
506 length = java_lang_String::length(java_string);
507 bool is_latin1 = java_lang_String::is_latin1(java_string);
508
509 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
510 if (result != NULL) {
511 if (!is_latin1) {
512 for (int index = 0; index < length; index++) {
513 result[index] = value->char_at(index);
514 }
515 } else {
516 for (int index = 0; index < length; index++) {
517 result[index] = ((jchar) value->byte_at(index)) & 0xff;
518 }
519 }
520 } else {
521 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
522 }
523 return result;
524 }
525
526 unsigned int java_lang_String::hash_code(oop java_string) {
527 int length = java_lang_String::length(java_string);
528 // Zero length string will hash to zero with String.hashCode() function.
529 if (length == 0) return 0;
530
531 typeArrayOop value = java_lang_String::value(java_string);
532 bool is_latin1 = java_lang_String::is_latin1(java_string);
533
534 if (is_latin1) {
535 return java_lang_String::hash_code(value->byte_at_addr(0), length);
536 } else {
537 return java_lang_String::hash_code(value->char_at_addr(0), length);
538 }
539 }
540
541 char* java_lang_String::as_quoted_ascii(oop java_string) {
542 typeArrayOop value = java_lang_String::value(java_string);
543 int length = java_lang_String::length(java_string);
544 bool is_latin1 = java_lang_String::is_latin1(java_string);
545
546 if (length == 0) return NULL;
547
548 char* result;
549 int result_length;
550 if (!is_latin1) {
551 jchar* base = value->char_at_addr(0);
552 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
553 result = NEW_RESOURCE_ARRAY(char, result_length);
554 UNICODE::as_quoted_ascii(base, length, result, result_length);
555 } else {
556 jbyte* base = value->byte_at_addr(0);
557 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
558 result = NEW_RESOURCE_ARRAY(char, result_length);
559 UNICODE::as_quoted_ascii(base, length, result, result_length);
560 }
561 assert(result_length >= length + 1, "must not be shorter");
562 assert(result_length == (int)strlen(result) + 1, "must match");
563 return result;
564 }
565
566 Symbol* java_lang_String::as_symbol(oop java_string, TRAPS) {
567 typeArrayOop value = java_lang_String::value(java_string);
568 int length = java_lang_String::length(java_string);
569 bool is_latin1 = java_lang_String::is_latin1(java_string);
570 if (!is_latin1) {
571 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
572 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
573 return sym;
574 } else {
575 ResourceMark rm;
576 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
577 const char* base = UNICODE::as_utf8(position, length);
578 Symbol* sym = SymbolTable::lookup(base, length, THREAD);
579 return sym;
580 }
581 }
582
583 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
584 typeArrayOop value = java_lang_String::value(java_string);
585 int length = java_lang_String::length(java_string);
586 bool is_latin1 = java_lang_String::is_latin1(java_string);
587 if (!is_latin1) {
588 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
589 return SymbolTable::probe_unicode(base, length);
590 } else {
591 ResourceMark rm;
592 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
593 const char* base = UNICODE::as_utf8(position, length);
594 return SymbolTable::probe(base, length);
595 }
596 }
597
598 int java_lang_String::utf8_length(oop java_string) {
599 typeArrayOop value = java_lang_String::value(java_string);
600 int length = java_lang_String::length(java_string);
601 bool is_latin1 = java_lang_String::is_latin1(java_string);
602 if (length == 0) {
603 return 0;
604 }
605 if (!is_latin1) {
606 return UNICODE::utf8_length(value->char_at_addr(0), length);
607 } else {
608 return UNICODE::utf8_length(value->byte_at_addr(0), length);
609 }
610 }
611
612 char* java_lang_String::as_utf8_string(oop java_string) {
613 typeArrayOop value = java_lang_String::value(java_string);
614 int length = java_lang_String::length(java_string);
615 bool is_latin1 = java_lang_String::is_latin1(java_string);
616 if (!is_latin1) {
617 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
618 return UNICODE::as_utf8(position, length);
619 } else {
620 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
621 return UNICODE::as_utf8(position, length);
622 }
623 }
624
625 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
626 typeArrayOop value = java_lang_String::value(java_string);
627 int length = java_lang_String::length(java_string);
628 bool is_latin1 = java_lang_String::is_latin1(java_string);
629 if (!is_latin1) {
630 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
631 return UNICODE::as_utf8(position, length, buf, buflen);
632 } else {
633 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
634 return UNICODE::as_utf8(position, length, buf, buflen);
635 }
636 }
637
638 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
639 typeArrayOop value = java_lang_String::value(java_string);
640 int length = java_lang_String::length(java_string);
641 assert(start + len <= length, "just checking");
642 bool is_latin1 = java_lang_String::is_latin1(java_string);
643 if (!is_latin1) {
644 jchar* position = value->char_at_addr(start);
645 return UNICODE::as_utf8(position, len);
646 } else {
647 jbyte* position = value->byte_at_addr(start);
648 return UNICODE::as_utf8(position, len);
649 }
650 }
651
652 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
653 typeArrayOop value = java_lang_String::value(java_string);
654 int length = java_lang_String::length(java_string);
655 assert(start + len <= length, "just checking");
656 bool is_latin1 = java_lang_String::is_latin1(java_string);
657 if (!is_latin1) {
658 jchar* position = value->char_at_addr(start);
659 return UNICODE::as_utf8(position, len, buf, buflen);
660 } else {
661 jbyte* position = value->byte_at_addr(start);
662 return UNICODE::as_utf8(position, len, buf, buflen);
663 }
664 }
665
666 bool java_lang_String::equals(oop java_string, jchar* chars, int len) {
667 assert(java_string->klass() == SystemDictionary::String_klass(),
668 "must be java_string");
669 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
670 int length = java_lang_String::length(java_string);
671 if (length != len) {
672 return false;
673 }
674 bool is_latin1 = java_lang_String::is_latin1(java_string);
675 if (!is_latin1) {
676 for (int i = 0; i < len; i++) {
677 if (value->char_at(i) != chars[i]) {
678 return false;
679 }
680 }
681 } else {
682 for (int i = 0; i < len; i++) {
683 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
684 return false;
685 }
686 }
687 }
688 return true;
689 }
690
691 bool java_lang_String::equals(oop str1, oop str2) {
692 assert(str1->klass() == SystemDictionary::String_klass(),
693 "must be java String");
694 assert(str2->klass() == SystemDictionary::String_klass(),
695 "must be java String");
696 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
697 int length1 = java_lang_String::length(str1);
698 bool is_latin1 = java_lang_String::is_latin1(str1);
699 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
700 int length2 = java_lang_String::length(str2);
701 bool is_latin2 = java_lang_String::is_latin1(str2);
702
703 if ((length1 != length2) || (is_latin1 != is_latin2)) {
704 // Strings of different size or with different
705 // coders are never equal.
706 return false;
707 }
708 int blength1 = value1->length();
709 for (int i = 0; i < blength1; i++) {
710 if (value1->byte_at(i) != value2->byte_at(i)) {
711 return false;
712 }
713 }
714 return true;
715 }
716
717 void java_lang_String::print(oop java_string, outputStream* st) {
718 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
719 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
720
721 if (value == NULL) {
722 // This can happen if, e.g., printing a String
723 // object before its initializer has been called
724 st->print("NULL");
725 return;
726 }
727
728 int length = java_lang_String::length(java_string);
729 bool is_latin1 = java_lang_String::is_latin1(java_string);
730
731 st->print("\"");
732 for (int index = 0; index < length; index++) {
733 st->print("%c", (!is_latin1) ? value->char_at(index) :
734 ((jchar) value->byte_at(index)) & 0xff );
735 }
736 st->print("\"");
737 }
738
739
740 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
741 assert(mirror.not_null() && fd->is_static(), "just checking");
742 if (fd->has_initial_value()) {
743 BasicType t = fd->field_type();
744 switch (t) {
745 case T_BYTE:
746 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
747 break;
748 case T_BOOLEAN:
749 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
750 break;
751 case T_CHAR:
752 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
753 break;
754 case T_SHORT:
755 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
756 break;
757 case T_INT:
758 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
759 break;
760 case T_FLOAT:
761 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
762 break;
763 case T_DOUBLE:
764 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
765 break;
766 case T_LONG:
767 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
768 break;
769 case T_OBJECT:
770 {
771 assert(fd->signature() == vmSymbols::string_signature(),
772 "just checking");
773 if (DumpSharedSpaces && MetaspaceShared::is_archive_object(mirror())) {
774 // Archive the String field and update the pointer.
775 oop s = mirror()->obj_field(fd->offset());
776 oop archived_s = StringTable::create_archived_string(s, CHECK);
777 mirror()->obj_field_put(fd->offset(), archived_s);
778 } else {
779 oop string = fd->string_initial_value(CHECK);
780 mirror()->obj_field_put(fd->offset(), string);
781 }
782 }
783 break;
784 default:
785 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
786 "Illegal ConstantValue attribute in class file");
787 }
788 }
789 }
790
791
792 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
793 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
794
795 // If the offset was read from the shared archive, it was fixed up already
796 if (!k->is_shared()) {
797 if (k->is_instance_klass()) {
798 // During bootstrap, java.lang.Class wasn't loaded so static field
799 // offsets were computed without the size added it. Go back and
800 // update all the static field offsets to included the size.
801 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
802 if (fs.access_flags().is_static()) {
803 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
804 fs.set_offset(real_offset);
805 }
806 }
807 }
808 }
809
810 if (k->is_shared() && k->has_raw_archived_mirror()) {
811 if (MetaspaceShared::open_archive_heap_region_mapped()) {
812 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
813 assert(present, "Missing archived mirror for %s", k->external_name());
814 return;
815 } else {
816 k->set_java_mirror_handle(NULL);
817 k->clear_has_raw_archived_mirror();
818 }
819 }
820 create_mirror(k, Handle(), Handle(), Handle(), CHECK);
821 }
822
823 void java_lang_Class::initialize_mirror_fields(Klass* k,
824 Handle mirror,
825 Handle protection_domain,
826 TRAPS) {
827 // Allocate a simple java object for a lock.
828 // This needs to be a java object because during class initialization
829 // it can be held across a java call.
830 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
831 set_init_lock(mirror(), r);
832
833 // Set protection domain also
834 set_protection_domain(mirror(), protection_domain());
835
836 // Initialize static fields
837 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
838 }
839
840 // Set the java.lang.Module module field in the java_lang_Class mirror
841 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
842 if (module.is_null()) {
843 // During startup, the module may be NULL only if java.base has not been defined yet.
844 // Put the class on the fixup_module_list to patch later when the java.lang.Module
845 // for java.base is known.
846 assert(!Universe::is_module_initialized(), "Incorrect java.lang.Module pre module system initialization");
847
848 bool javabase_was_defined = false;
849 {
850 MutexLocker m1(Module_lock, THREAD);
851 // Keep list of classes needing java.base module fixup
852 if (!ModuleEntryTable::javabase_defined()) {
853 assert(k->java_mirror() != NULL, "Class's mirror is null");
854 k->class_loader_data()->inc_keep_alive();
855 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
856 fixup_module_field_list()->push(k);
857 } else {
858 javabase_was_defined = true;
859 }
860 }
861
862 // If java.base was already defined then patch this particular class with java.base.
863 if (javabase_was_defined) {
864 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
865 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
866 "Setting class module field, " JAVA_BASE_NAME " should be defined");
867 Handle javabase_handle(THREAD, javabase_entry->module());
868 set_module(mirror(), javabase_handle());
869 }
870 } else {
871 assert(Universe::is_module_initialized() ||
872 (ModuleEntryTable::javabase_defined() &&
873 (oopDesc::equals(module(), ModuleEntryTable::javabase_moduleEntry()->module()))),
874 "Incorrect java.lang.Module specification while creating mirror");
875 set_module(mirror(), module());
876 }
877 }
878
879 // Statically allocate fixup lists because they always get created.
880 void java_lang_Class::allocate_fixup_lists() {
881 GrowableArray<Klass*>* mirror_list =
882 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
883 set_fixup_mirror_list(mirror_list);
884
885 GrowableArray<Klass*>* module_list =
886 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
887 set_fixup_module_field_list(module_list);
888 }
889
890 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
891 Handle module, Handle protection_domain, TRAPS) {
892 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
893 assert(k->java_mirror() == NULL, "should only assign mirror once");
894
895 // Use this moment of initialization to cache modifier_flags also,
896 // to support Class.getModifiers(). Instance classes recalculate
897 // the cached flags after the class file is parsed, but before the
898 // class is put into the system dictionary.
899 int computed_modifiers = k->compute_modifier_flags(CHECK);
900 k->set_modifier_flags(computed_modifiers);
901 // Class_klass has to be loaded because it is used to allocate
902 // the mirror.
903 if (SystemDictionary::Class_klass_loaded()) {
904 // Allocate mirror (java.lang.Class instance)
905 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
906 Handle mirror(THREAD, mirror_oop);
907 Handle comp_mirror;
908
909 // Setup indirection from mirror->klass
910 java_lang_Class::set_klass(mirror(), k);
911
912 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
913 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
914
915 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
916
917 // It might also have a component mirror. This mirror must already exist.
918 if (k->is_array_klass()) {
919 if (k->is_valueArray_klass()) {
920 Klass* element_klass = (Klass*) ValueArrayKlass::cast(k)->element_klass();
921 if (element_klass->is_value()) {
922 ValueKlass* vk = ValueKlass::cast(InstanceKlass::cast(element_klass));
923 comp_mirror = Handle(THREAD, vk->value_mirror());
924 } else {
925 comp_mirror = Handle(THREAD, element_klass->java_mirror());
926 }
927 }
928 else if (k->is_typeArray_klass()) {
929 BasicType type = TypeArrayKlass::cast(k)->element_type();
930 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
931 } else {
932 assert(k->is_objArray_klass(), "Must be");
933 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
934 assert(element_klass != NULL, "Must have an element klass");
935 if (element_klass->is_value()) {
936 ValueKlass* vk = ValueKlass::cast(InstanceKlass::cast(element_klass));
937 comp_mirror = Handle(THREAD, vk->value_mirror());
938 } else {
939 comp_mirror = Handle(THREAD, element_klass->java_mirror());
940 }
941 }
942 assert(comp_mirror() != NULL, "must have a mirror");
943
944 // Two-way link between the array klass and its component mirror:
945 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
946 set_component_mirror(mirror(), comp_mirror());
947 // See below for ordering dependencies between field array_klass in component mirror
948 // and java_mirror in this klass.
949 } else {
950 assert(k->is_instance_klass(), "Must be");
951
952 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
953 if (HAS_PENDING_EXCEPTION) {
954 // If any of the fields throws an exception like OOM remove the klass field
955 // from the mirror so GC doesn't follow it after the klass has been deallocated.
956 // This mirror looks like a primitive type, which logically it is because it
957 // it represents no class.
958 java_lang_Class::set_klass(mirror(), NULL);
959 return;
960 }
961 }
962
963 // set the classLoader field in the java_lang_Class instance
964 assert(oopDesc::equals(class_loader(), k->class_loader()), "should be same");
965 set_class_loader(mirror(), class_loader());
966
967 // Setup indirection from klass->mirror
968 // after any exceptions can happen during allocations.
969 k->set_java_mirror(mirror);
970
971 // Set the module field in the java_lang_Class instance. This must be done
972 // after the mirror is set.
973 set_mirror_module_field(k, mirror, module, THREAD);
974
975 if (comp_mirror() != NULL) {
976 // Set after k->java_mirror() is published, because compiled code running
977 // concurrently doesn't expect a k to have a null java_mirror.
978 release_set_array_klass(comp_mirror(), k);
979 }
980
981 if (k->is_value()) {
982 // create the secondary mirror for value class
983 oop value_mirror_oop = create_value_mirror(k, mirror, CHECK);
984 set_box_mirror(mirror(), mirror());
985 set_value_mirror(mirror(), value_mirror_oop);
986 }
987 } else {
988 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
989 fixup_mirror_list()->push(k);
990 }
991 }
992
993 // Create the secondary mirror for value type. Sets all the fields of this java.lang.Class
994 // instance with the same value as the primary mirror except signers.
995 // Class::setSigners and getSigners will use the primary mirror when passed to the JVM.
996 oop java_lang_Class::create_value_mirror(Klass* k, Handle mirror, TRAPS) {
997 // Allocate mirror (java.lang.Class instance)
998 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0);
999 Handle value_mirror(THREAD, mirror_oop);
1000
1001 java_lang_Class::set_klass(value_mirror(), k);
1002 java_lang_Class::set_static_oop_field_count(value_mirror(), static_oop_field_count(mirror()));
1003 // ## do we need to set init lock?
1004 java_lang_Class::set_init_lock(value_mirror(), init_lock(mirror()));
1005
1006 if (k->is_array_klass()) {
1007 assert(component_mirror(mirror()) != NULL, "must have a mirror");
1008 set_component_mirror(value_mirror(), component_mirror(mirror()));
1009 }
1010
1011 set_protection_domain(value_mirror(), protection_domain(mirror()));
1012 set_class_loader(value_mirror(), class_loader(mirror()));
1013 // ## handle if java.base is not yet defined
1014 set_module(value_mirror(), module(mirror()));
1015 set_box_mirror(value_mirror(), mirror());
1016 set_value_mirror(value_mirror(), value_mirror());
1017 return value_mirror();
1018 }
1019
1020 #if INCLUDE_CDS_JAVA_HEAP
1021 // Clears mirror fields. Static final fields with initial values are reloaded
1022 // from constant pool. The object identity hash is in the object header and is
1023 // not affected.
1024 class ResetMirrorField: public FieldClosure {
1025 private:
1026 Handle _m;
1027
1028 public:
1029 ResetMirrorField(Handle mirror) : _m(mirror) {}
1030
1031 void do_field(fieldDescriptor* fd) {
1032 assert(DumpSharedSpaces, "dump time only");
1033 assert(_m.not_null(), "Mirror cannot be NULL");
1034
1035 if (fd->is_static() && fd->has_initial_value()) {
1036 initialize_static_field(fd, _m, Thread::current());
1037 return;
1038 }
1039
1040 BasicType ft = fd->field_type();
1041 switch (ft) {
1042 case T_BYTE:
1043 _m()->byte_field_put(fd->offset(), 0);
1044 break;
1045 case T_CHAR:
1046 _m()->char_field_put(fd->offset(), 0);
1047 break;
1048 case T_DOUBLE:
1049 _m()->double_field_put(fd->offset(), 0);
1050 break;
1051 case T_FLOAT:
1052 _m()->float_field_put(fd->offset(), 0);
1053 break;
1054 case T_INT:
1055 _m()->int_field_put(fd->offset(), 0);
1056 break;
1057 case T_LONG:
1058 _m()->long_field_put(fd->offset(), 0);
1059 break;
1060 case T_SHORT:
1061 _m()->short_field_put(fd->offset(), 0);
1062 break;
1063 case T_BOOLEAN:
1064 _m()->bool_field_put(fd->offset(), false);
1065 break;
1066 case T_ARRAY:
1067 case T_OBJECT: {
1068 // It might be useful to cache the String field, but
1069 // for now just clear out any reference field
1070 oop o = _m()->obj_field(fd->offset());
1071 _m()->obj_field_put(fd->offset(), NULL);
1072 break;
1073 }
1074 default:
1075 ShouldNotReachHere();
1076 break;
1077 }
1078 }
1079 };
1080
1081 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1082 assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1083 "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1084
1085 for (int t = 0; t <= T_VOID; t++) {
1086 oop m = Universe::_mirrors[t];
1087 if (m != NULL) {
1088 // Update the field at _array_klass_offset to point to the relocated array klass.
1089 oop archived_m = MetaspaceShared::archive_heap_object(m, THREAD);
1090 assert(archived_m != NULL, "sanity");
1091 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1092 assert(ak != NULL || t == T_VOID, "should not be NULL");
1093 if (ak != NULL) {
1094 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak);
1095 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1096 }
1097
1098 // Clear the fields. Just to be safe
1099 Klass *k = m->klass();
1100 Handle archived_mirror_h(THREAD, archived_m);
1101 ResetMirrorField reset(archived_mirror_h);
1102 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1103
1104 log_trace(cds, heap, mirror)(
1105 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1106 type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1107
1108 Universe::_mirrors[t] = archived_m;
1109 }
1110 }
1111
1112 assert(Universe::_mirrors[T_INT] != NULL &&
1113 Universe::_mirrors[T_FLOAT] != NULL &&
1114 Universe::_mirrors[T_DOUBLE] != NULL &&
1115 Universe::_mirrors[T_BYTE] != NULL &&
1116 Universe::_mirrors[T_BOOLEAN] != NULL &&
1117 Universe::_mirrors[T_CHAR] != NULL &&
1118 Universe::_mirrors[T_LONG] != NULL &&
1119 Universe::_mirrors[T_SHORT] != NULL &&
1120 Universe::_mirrors[T_VOID] != NULL, "sanity");
1121
1122 Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1123 Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1124 Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1125 Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1126 Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1127 Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1128 Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1129 Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1130 Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1131 }
1132
1133 //
1134 // After the mirror object is successfully archived, the archived
1135 // klass is set with _has_archived_raw_mirror flag.
1136 //
1137 // The _has_archived_raw_mirror flag is cleared at runtime when the
1138 // archived mirror is restored. If archived java heap data cannot
1139 // be used at runtime, new mirror object is created for the shared
1140 // class. The _has_archived_raw_mirror is cleared also during the process.
1141 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1142 assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1143 "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1144
1145 // Mirror is already archived
1146 if (k->has_raw_archived_mirror()) {
1147 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1148 return k->archived_java_mirror_raw();
1149 }
1150
1151 // No mirror
1152 oop mirror = k->java_mirror();
1153 if (mirror == NULL) {
1154 return NULL;
1155 }
1156
1157 if (k->is_instance_klass()) {
1158 InstanceKlass *ik = InstanceKlass::cast(k);
1159 assert(ik->signers() == NULL && !k->has_signer_and_not_archived(),
1160 "class with signer cannot be supported");
1161
1162 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1163 ik->is_shared_app_class())) {
1164 // Archiving mirror for classes from non-builtin loaders is not
1165 // supported. Clear the _java_mirror within the archived class.
1166 k->set_java_mirror_handle(NULL);
1167 return NULL;
1168 }
1169 }
1170
1171 // Now start archiving the mirror object
1172 oop archived_mirror = MetaspaceShared::archive_heap_object(mirror, THREAD);
1173 if (archived_mirror == NULL) {
1174 return NULL;
1175 }
1176
1177 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1178 if (archived_mirror == NULL) {
1179 return NULL;
1180 }
1181
1182 k->set_archived_java_mirror_raw(archived_mirror);
1183
1184 k->set_has_raw_archived_mirror();
1185
1186 ResourceMark rm;
1187 log_trace(cds, heap, mirror)(
1188 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1189 k->external_name(), p2i(mirror), p2i(archived_mirror));
1190
1191 return archived_mirror;
1192 }
1193
1194 // The process is based on create_mirror().
1195 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1196 oop archived_mirror,
1197 Thread *THREAD) {
1198 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1199 // to archived metadata and objects below.
1200 Klass *c = archived_mirror->klass();
1201 Handle archived_mirror_h(THREAD, archived_mirror);
1202 ResetMirrorField reset(archived_mirror_h);
1203 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1204
1205 if (k->is_array_klass()) {
1206 oop archived_comp_mirror;
1207 if (k->is_typeArray_klass()) {
1208 // The primitive type mirrors are already archived. Get the archived mirror.
1209 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1210 archived_comp_mirror = MetaspaceShared::find_archived_heap_object(comp_mirror);
1211 assert(archived_comp_mirror != NULL, "Must be");
1212 } else {
1213 assert(k->is_objArray_klass(), "Must be");
1214 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1215 assert(element_klass != NULL, "Must have an element klass");
1216 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1217 if (archived_comp_mirror == NULL) {
1218 return NULL;
1219 }
1220 }
1221 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1222 } else {
1223 assert(k->is_instance_klass(), "Must be");
1224
1225 // Reset local static fields in the mirror
1226 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1227
1228 java_lang_Class:set_init_lock(archived_mirror, NULL);
1229
1230 set_protection_domain(archived_mirror, NULL);
1231 }
1232
1233 // clear class loader and mirror_module_field
1234 set_class_loader(archived_mirror, NULL);
1235 set_module(archived_mirror, NULL);
1236
1237 // The archived mirror's field at _klass_offset is still pointing to the original
1238 // klass. Updated the field in the archived mirror to point to the relocated
1239 // klass in the archive.
1240 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror));
1241 log_debug(cds, heap, mirror)(
1242 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1243 p2i(as_Klass(mirror)), p2i(reloc_k));
1244 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1245
1246 // The field at _array_klass_offset is pointing to the original one dimension
1247 // higher array klass if exists. Relocate the pointer.
1248 Klass *arr = array_klass_acquire(mirror);
1249 if (arr != NULL) {
1250 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr);
1251 log_debug(cds, heap, mirror)(
1252 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1253 p2i(arr), p2i(reloc_arr));
1254 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1255 }
1256 return archived_mirror;
1257 }
1258
1259 // Returns true if the mirror is updated, false if no archived mirror
1260 // data is present. After the archived mirror object is restored, the
1261 // shared klass' _has_raw_archived_mirror flag is cleared.
1262 bool java_lang_Class::restore_archived_mirror(Klass *k,
1263 Handle class_loader, Handle module,
1264 Handle protection_domain, TRAPS) {
1265 oop m = MetaspaceShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1266
1267 if (m == NULL) {
1268 return false;
1269 }
1270
1271 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1272
1273 // mirror is archived, restore
1274 assert(MetaspaceShared::is_archive_object(m), "must be archived mirror object");
1275 Handle mirror(THREAD, m);
1276
1277 // The java.lang.Class field offsets were archived and reloaded from archive.
1278 // No need to put classes on the fixup_mirror_list before java.lang.Class
1279 // is loaded.
1280
1281 if (!k->is_array_klass()) {
1282 // - local static final fields with initial values were initialized at dump time
1283
1284 // create the init_lock
1285 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1286 set_init_lock(mirror(), r);
1287
1288 if (protection_domain.not_null()) {
1289 set_protection_domain(mirror(), protection_domain());
1290 }
1291 }
1292
1293 assert(class_loader() == k->class_loader(), "should be same");
1294 if (class_loader.not_null()) {
1295 set_class_loader(mirror(), class_loader());
1296 }
1297
1298 k->set_java_mirror(mirror);
1299 k->clear_has_raw_archived_mirror();
1300
1301 set_mirror_module_field(k, mirror, module, THREAD);
1302
1303 ResourceMark rm;
1304 log_trace(cds, heap, mirror)(
1305 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1306
1307 return true;
1308 }
1309 #endif // INCLUDE_CDS_JAVA_HEAP
1310
1311 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1312 assert(_module_offset != 0, "must have been computed already");
1313 java_lang_Class::set_module(k->java_mirror(), module());
1314 }
1315
1316 int java_lang_Class::oop_size(oop java_class) {
1317 assert(_oop_size_offset != 0, "must be set");
1318 int size = java_class->int_field(_oop_size_offset);
1319 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1320 return size;
1321 }
1322
1323 int java_lang_Class::oop_size_raw(oop java_class) {
1324 assert(_oop_size_offset != 0, "must be set");
1325 int size = java_class->int_field_raw(_oop_size_offset);
1326 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1327 return size;
1328 }
1329
1330 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1331 assert(_oop_size_offset != 0, "must be set");
1332 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1333 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1334 }
1335
1336 int java_lang_Class::static_oop_field_count(oop java_class) {
1337 assert(_static_oop_field_count_offset != 0, "must be set");
1338 return java_class->int_field(_static_oop_field_count_offset);
1339 }
1340
1341 int java_lang_Class::static_oop_field_count_raw(oop java_class) {
1342 assert(_static_oop_field_count_offset != 0, "must be set");
1343 return java_class->int_field_raw(_static_oop_field_count_offset);
1344 }
1345
1346 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1347 assert(_static_oop_field_count_offset != 0, "must be set");
1348 java_class->int_field_put(_static_oop_field_count_offset, size);
1349 }
1350
1351 oop java_lang_Class::protection_domain(oop java_class) {
1352 assert(_protection_domain_offset != 0, "must be set");
1353 return java_class->obj_field(_protection_domain_offset);
1354 }
1355 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1356 assert(_protection_domain_offset != 0, "must be set");
1357 java_class->obj_field_put(_protection_domain_offset, pd);
1358 }
1359
1360 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1361 assert(_component_mirror_offset != 0, "must be set");
1362 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1363 }
1364 oop java_lang_Class::component_mirror(oop java_class) {
1365 assert(_component_mirror_offset != 0, "must be set");
1366 return java_class->obj_field(_component_mirror_offset);
1367 }
1368
1369 oop java_lang_Class::init_lock(oop java_class) {
1370 assert(_init_lock_offset != 0, "must be set");
1371 return java_class->obj_field(_init_lock_offset);
1372 }
1373 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1374 assert(_init_lock_offset != 0, "must be set");
1375 java_class->obj_field_put(_init_lock_offset, init_lock);
1376 }
1377
1378 objArrayOop java_lang_Class::signers(oop java_class) {
1379 assert(_signers_offset != 0, "must be set");
1380 return (objArrayOop)java_class->obj_field(_signers_offset);
1381 }
1382 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1383 assert(_signers_offset != 0, "must be set");
1384 java_class->obj_field_put(_signers_offset, (oop)signers);
1385 }
1386
1387
1388 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1389 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
1390 if (_class_loader_offset != 0) {
1391 java_class->obj_field_put(_class_loader_offset, loader);
1392 }
1393 }
1394
1395 oop java_lang_Class::class_loader(oop java_class) {
1396 assert(_class_loader_offset != 0, "must be set");
1397 return java_class->obj_field(_class_loader_offset);
1398 }
1399
1400 oop java_lang_Class::module(oop java_class) {
1401 assert(_module_offset != 0, "must be set");
1402 return java_class->obj_field(_module_offset);
1403 }
1404
1405 void java_lang_Class::set_module(oop java_class, oop module) {
1406 assert(_module_offset != 0, "must be set");
1407 java_class->obj_field_put(_module_offset, module);
1408 }
1409
1410 oop java_lang_Class::value_mirror(oop java_class) {
1411 assert(_value_mirror_offset != 0, "must be set");
1412 return java_class->obj_field(_value_mirror_offset);
1413 }
1414
1415 void java_lang_Class::set_value_mirror(oop java_class, oop mirror) {
1416 assert(_value_mirror_offset != 0, "must be set");
1417 java_class->obj_field_put(_value_mirror_offset, mirror);
1418 }
1419
1420 oop java_lang_Class::box_mirror(oop java_class) {
1421 assert(_box_mirror_offset != 0, "must be set");
1422 return java_class->obj_field(_box_mirror_offset);
1423 }
1424
1425 void java_lang_Class::set_box_mirror(oop java_class, oop mirror) {
1426 assert(_box_mirror_offset != 0, "must be set");
1427 java_class->obj_field_put(_box_mirror_offset, mirror);
1428 }
1429
1430 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1431 // This should be improved by adding a field at the Java level or by
1432 // introducing a new VM klass (see comment in ClassFileParser)
1433 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
1434 if (type != T_VOID) {
1435 Klass* aklass = Universe::typeArrayKlassObj(type);
1436 assert(aklass != NULL, "correct bootstrap");
1437 release_set_array_klass(java_class, aklass);
1438 }
1439 #ifdef ASSERT
1440 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1441 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1442 #endif
1443 return java_class;
1444 }
1445
1446
1447 Klass* java_lang_Class::as_Klass(oop java_class) {
1448 //%note memory_2
1449 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1450 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1451 assert(k == NULL || k->is_klass(), "type check");
1452 return k;
1453 }
1454
1455 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1456 //%note memory_2
1457 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1458 Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1459 assert(k == NULL || k->is_klass(), "type check");
1460 return k;
1461 }
1462
1463
1464 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1465 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1466 java_class->metadata_field_put(_klass_offset, klass);
1467 }
1468
1469
1470 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1471 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1472 Symbol* name = NULL;
1473 bool is_instance = false;
1474 bool is_value = false;
1475 if (is_primitive(java_class)) {
1476 name = vmSymbols::type_signature(primitive_type(java_class));
1477 } else {
1478 Klass* k = as_Klass(java_class);
1479 is_instance = k->is_instance_klass();
1480 is_value = k->is_value();
1481 name = k->name();
1482 }
1483 if (name == NULL) {
1484 st->print("<null>");
1485 return;
1486 }
1487 if (is_instance) {
1488 if (is_value) {
1489 st->print("Q");
1490 } else {
1491 st->print("L");
1492 }
1493 }
1494 st->write((char*) name->base(), (int) name->utf8_length());
1495 if (is_instance) st->print(";");
1496 }
1497
1498 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
1499 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1500 Symbol* name;
1501 if (is_primitive(java_class)) {
1502 name = vmSymbols::type_signature(primitive_type(java_class));
1503 // Because this can create a new symbol, the caller has to decrement
1504 // the refcount, so make adjustment here and below for symbols returned
1505 // that are not created or incremented due to a successful lookup.
1506 name->increment_refcount();
1507 } else {
1508 Klass* k = as_Klass(java_class);
1509 if (!k->is_instance_klass()) {
1510 name = k->name();
1511 name->increment_refcount();
1512 } else {
1513 ResourceMark rm;
1514 const char* sigstr;
1515 if (k->is_value()) {
1516 char c = (java_class == value_mirror(java_class)) ? 'Q' : 'L';
1517 sigstr = InstanceKlass::cast(k)->signature_name_of(c);
1518 } else {
1519 sigstr = k->signature_name();
1520 }
1521 int siglen = (int) strlen(sigstr);
1522 if (!intern_if_not_found) {
1523 name = SymbolTable::probe(sigstr, siglen);
1524 } else {
1525 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
1526 }
1527 }
1528 }
1529 return name;
1530 }
1531
1532 // Returns the Java name for this Java mirror (Resource allocated)
1533 // See Klass::external_name().
1534 // For primitive type Java mirrors, its type name is returned.
1535 const char* java_lang_Class::as_external_name(oop java_class) {
1536 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1537 const char* name = NULL;
1538 if (is_primitive(java_class)) {
1539 name = type2name(primitive_type(java_class));
1540 } else {
1541 name = as_Klass(java_class)->external_name();
1542 }
1543 if (name == NULL) {
1544 name = "<null>";
1545 }
1546 return name;
1547 }
1548
1549 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1550 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1551 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1552 return k;
1553 }
1554
1555
1556 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1557 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1558 java_class->release_metadata_field_put(_array_klass_offset, klass);
1559 }
1560
1561
1562 bool java_lang_Class::is_primitive(oop java_class) {
1563 // should assert:
1564 //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1565 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
1566
1567 #ifdef ASSERT
1568 if (is_primitive) {
1569 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1570 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
1571 "Should be either the T_VOID primitive or a java primitive");
1572 }
1573 #endif
1574
1575 return is_primitive;
1576 }
1577
1578
1579 BasicType java_lang_Class::primitive_type(oop java_class) {
1580 assert(java_lang_Class::is_primitive(java_class), "just checking");
1581 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1582 BasicType type = T_VOID;
1583 if (ak != NULL) {
1584 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1585 type = ArrayKlass::cast(ak)->element_type();
1586 } else {
1587 assert(oopDesc::equals(java_class, Universe::void_mirror()), "only valid non-array primitive");
1588 }
1589 assert(oopDesc::equals(Universe::java_mirror(type), java_class), "must be consistent");
1590 return type;
1591 }
1592
1593 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1594 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1595 if (is_primitive(java_class)) {
1596 if (reference_klass != NULL)
1597 (*reference_klass) = NULL;
1598 return primitive_type(java_class);
1599 } else {
1600 if (reference_klass != NULL)
1601 (*reference_klass) = as_Klass(java_class);
1602 return T_OBJECT;
1603 }
1604 }
1605
1606
1607 oop java_lang_Class::primitive_mirror(BasicType t) {
1608 oop mirror = Universe::java_mirror(t);
1609 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1610 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1611 return mirror;
1612 }
1613
1614 bool java_lang_Class::offsets_computed = false;
1615 int java_lang_Class::classRedefinedCount_offset = -1;
1616
1617 #define CLASS_FIELDS_DO(macro) \
1618 macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false) ; \
1619 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1620 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1621 macro(_module_offset, k, "module", module_signature, false); \
1622 macro(_box_mirror_offset, k, "boxType", class_signature, false); \
1623 macro(_value_mirror_offset, k, "valueType", class_signature, false)
1624
1625 void java_lang_Class::compute_offsets() {
1626 if (offsets_computed) {
1627 return;
1628 }
1629
1630 offsets_computed = true;
1631
1632 InstanceKlass* k = SystemDictionary::Class_klass();
1633 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1634
1635 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1636 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1637 // GC treats them the same.
1638 _init_lock_offset = _component_mirror_offset;
1639
1640 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1641 }
1642
1643 #if INCLUDE_CDS
1644 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1645 f->do_u4((u4*)&offsets_computed);
1646 f->do_u4((u4*)&_init_lock_offset);
1647
1648 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1649
1650 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1651 }
1652 #endif
1653
1654 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1655 if (classRedefinedCount_offset == -1) {
1656 // If we don't have an offset for it then just return -1 as a marker.
1657 return -1;
1658 }
1659
1660 return the_class_mirror->int_field(classRedefinedCount_offset);
1661 }
1662
1663 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1664 if (classRedefinedCount_offset == -1) {
1665 // If we don't have an offset for it then nothing to set.
1666 return;
1667 }
1668
1669 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1670 }
1671
1672
1673 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1674 // platform thread structure, and a eetop offset which was used for thread
1675 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1676 // merged, so in the HotSpot VM we just use the eetop field for the thread
1677 // instead of the privateInfo_offset.
1678 //
1679 // Note: The stackSize field is only present starting in 1.4.
1680
1681 int java_lang_Thread::_name_offset = 0;
1682 int java_lang_Thread::_group_offset = 0;
1683 int java_lang_Thread::_contextClassLoader_offset = 0;
1684 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1685 int java_lang_Thread::_priority_offset = 0;
1686 int java_lang_Thread::_eetop_offset = 0;
1687 int java_lang_Thread::_daemon_offset = 0;
1688 int java_lang_Thread::_stillborn_offset = 0;
1689 int java_lang_Thread::_stackSize_offset = 0;
1690 int java_lang_Thread::_tid_offset = 0;
1691 int java_lang_Thread::_thread_status_offset = 0;
1692 int java_lang_Thread::_park_blocker_offset = 0;
1693 int java_lang_Thread::_park_event_offset = 0 ;
1694
1695 #define THREAD_FIELDS_DO(macro) \
1696 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1697 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1698 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1699 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1700 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1701 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1702 macro(_eetop_offset, k, "eetop", long_signature, false); \
1703 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1704 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1705 macro(_tid_offset, k, "tid", long_signature, false); \
1706 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1707 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \
1708 macro(_park_event_offset, k, "nativeParkEventPointer", long_signature, false)
1709
1710 void java_lang_Thread::compute_offsets() {
1711 assert(_group_offset == 0, "offsets should be initialized only once");
1712
1713 InstanceKlass* k = SystemDictionary::Thread_klass();
1714 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1715 }
1716
1717 #if INCLUDE_CDS
1718 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1719 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1720 }
1721 #endif
1722
1723 JavaThread* java_lang_Thread::thread(oop java_thread) {
1724 return (JavaThread*)java_thread->address_field(_eetop_offset);
1725 }
1726
1727
1728 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1729 java_thread->address_field_put(_eetop_offset, (address)thread);
1730 }
1731
1732
1733 oop java_lang_Thread::name(oop java_thread) {
1734 return java_thread->obj_field(_name_offset);
1735 }
1736
1737
1738 void java_lang_Thread::set_name(oop java_thread, oop name) {
1739 java_thread->obj_field_put(_name_offset, name);
1740 }
1741
1742
1743 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1744 return (ThreadPriority)java_thread->int_field(_priority_offset);
1745 }
1746
1747
1748 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1749 java_thread->int_field_put(_priority_offset, priority);
1750 }
1751
1752
1753 oop java_lang_Thread::threadGroup(oop java_thread) {
1754 return java_thread->obj_field(_group_offset);
1755 }
1756
1757
1758 bool java_lang_Thread::is_stillborn(oop java_thread) {
1759 return java_thread->bool_field(_stillborn_offset) != 0;
1760 }
1761
1762
1763 // We never have reason to turn the stillborn bit off
1764 void java_lang_Thread::set_stillborn(oop java_thread) {
1765 java_thread->bool_field_put(_stillborn_offset, true);
1766 }
1767
1768
1769 bool java_lang_Thread::is_alive(oop java_thread) {
1770 JavaThread* thr = java_lang_Thread::thread(java_thread);
1771 return (thr != NULL);
1772 }
1773
1774
1775 bool java_lang_Thread::is_daemon(oop java_thread) {
1776 return java_thread->bool_field(_daemon_offset) != 0;
1777 }
1778
1779
1780 void java_lang_Thread::set_daemon(oop java_thread) {
1781 java_thread->bool_field_put(_daemon_offset, true);
1782 }
1783
1784 oop java_lang_Thread::context_class_loader(oop java_thread) {
1785 return java_thread->obj_field(_contextClassLoader_offset);
1786 }
1787
1788 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1789 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1790 }
1791
1792
1793 jlong java_lang_Thread::stackSize(oop java_thread) {
1794 if (_stackSize_offset > 0) {
1795 return java_thread->long_field(_stackSize_offset);
1796 } else {
1797 return 0;
1798 }
1799 }
1800
1801 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1802 void java_lang_Thread::set_thread_status(oop java_thread,
1803 java_lang_Thread::ThreadStatus status) {
1804 // The threadStatus is only present starting in 1.5
1805 if (_thread_status_offset > 0) {
1806 java_thread->int_field_put(_thread_status_offset, status);
1807 }
1808 }
1809
1810 // Read thread status value from threadStatus field in java.lang.Thread java class.
1811 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1812 // Make sure the caller is operating on behalf of the VM or is
1813 // running VM code (state == _thread_in_vm).
1814 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1815 JavaThread::current()->thread_state() == _thread_in_vm,
1816 "Java Thread is not running in vm");
1817 // The threadStatus is only present starting in 1.5
1818 if (_thread_status_offset > 0) {
1819 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1820 } else {
1821 // All we can easily figure out is if it is alive, but that is
1822 // enough info for a valid unknown status.
1823 // These aren't restricted to valid set ThreadStatus values, so
1824 // use JVMTI values and cast.
1825 JavaThread* thr = java_lang_Thread::thread(java_thread);
1826 if (thr == NULL) {
1827 // the thread hasn't run yet or is in the process of exiting
1828 return NEW;
1829 }
1830 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1831 }
1832 }
1833
1834
1835 jlong java_lang_Thread::thread_id(oop java_thread) {
1836 // The thread ID field is only present starting in 1.5
1837 if (_tid_offset > 0) {
1838 return java_thread->long_field(_tid_offset);
1839 } else {
1840 return 0;
1841 }
1842 }
1843
1844 oop java_lang_Thread::park_blocker(oop java_thread) {
1845 assert(JDK_Version::current().supports_thread_park_blocker() &&
1846 _park_blocker_offset != 0, "Must support parkBlocker field");
1847
1848 if (_park_blocker_offset > 0) {
1849 return java_thread->obj_field(_park_blocker_offset);
1850 }
1851
1852 return NULL;
1853 }
1854
1855 jlong java_lang_Thread::park_event(oop java_thread) {
1856 if (_park_event_offset > 0) {
1857 return java_thread->long_field(_park_event_offset);
1858 }
1859 return 0;
1860 }
1861
1862 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1863 if (_park_event_offset > 0) {
1864 java_thread->long_field_put(_park_event_offset, ptr);
1865 return true;
1866 }
1867 return false;
1868 }
1869
1870
1871 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1872 assert(_thread_status_offset != 0, "Must have thread status");
1873 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1874 switch (status) {
1875 case NEW : return "NEW";
1876 case RUNNABLE : return "RUNNABLE";
1877 case SLEEPING : return "TIMED_WAITING (sleeping)";
1878 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1879 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1880 case PARKED : return "WAITING (parking)";
1881 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1882 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1883 case TERMINATED : return "TERMINATED";
1884 default : return "UNKNOWN";
1885 };
1886 }
1887 int java_lang_ThreadGroup::_parent_offset = 0;
1888 int java_lang_ThreadGroup::_name_offset = 0;
1889 int java_lang_ThreadGroup::_threads_offset = 0;
1890 int java_lang_ThreadGroup::_groups_offset = 0;
1891 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1892 int java_lang_ThreadGroup::_destroyed_offset = 0;
1893 int java_lang_ThreadGroup::_daemon_offset = 0;
1894 int java_lang_ThreadGroup::_nthreads_offset = 0;
1895 int java_lang_ThreadGroup::_ngroups_offset = 0;
1896
1897 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1898 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1899 return java_thread_group->obj_field(_parent_offset);
1900 }
1901
1902 // ("name as oop" accessor is not necessary)
1903
1904 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1905 oop name = java_thread_group->obj_field(_name_offset);
1906 // ThreadGroup.name can be null
1907 if (name != NULL) {
1908 return java_lang_String::as_utf8_string(name);
1909 }
1910 return NULL;
1911 }
1912
1913 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1914 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1915 return java_thread_group->int_field(_nthreads_offset);
1916 }
1917
1918 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1919 oop threads = java_thread_group->obj_field(_threads_offset);
1920 assert(threads != NULL, "threadgroups should have threads");
1921 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1922 return objArrayOop(threads);
1923 }
1924
1925 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1926 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1927 return java_thread_group->int_field(_ngroups_offset);
1928 }
1929
1930 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1931 oop groups = java_thread_group->obj_field(_groups_offset);
1932 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1933 return objArrayOop(groups);
1934 }
1935
1936 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1937 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1938 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1939 }
1940
1941 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1942 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1943 return java_thread_group->bool_field(_destroyed_offset) != 0;
1944 }
1945
1946 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1947 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1948 return java_thread_group->bool_field(_daemon_offset) != 0;
1949 }
1950
1951 #define THREADGROUP_FIELDS_DO(macro) \
1952 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1953 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1954 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1955 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1956 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1957 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1958 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1959 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1960 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1961
1962 void java_lang_ThreadGroup::compute_offsets() {
1963 assert(_parent_offset == 0, "offsets should be initialized only once");
1964
1965 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1966 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1967 }
1968
1969 #if INCLUDE_CDS
1970 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1971 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1972 }
1973 #endif
1974
1975 #define THROWABLE_FIELDS_DO(macro) \
1976 macro(backtrace_offset, k, "backtrace", object_signature, false); \
1977 macro(detailMessage_offset, k, "detailMessage", string_signature, false); \
1978 macro(stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1979 macro(depth_offset, k, "depth", int_signature, false); \
1980 macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1981
1982 void java_lang_Throwable::compute_offsets() {
1983 InstanceKlass* k = SystemDictionary::Throwable_klass();
1984 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1985 }
1986
1987 #if INCLUDE_CDS
1988 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1989 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1990 }
1991 #endif
1992
1993 oop java_lang_Throwable::unassigned_stacktrace() {
1994 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1995 oop base = ik->static_field_base_raw();
1996 return base->obj_field(static_unassigned_stacktrace_offset);
1997 }
1998
1999 oop java_lang_Throwable::backtrace(oop throwable) {
2000 return throwable->obj_field_acquire(backtrace_offset);
2001 }
2002
2003
2004 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2005 throwable->release_obj_field_put(backtrace_offset, value);
2006 }
2007
2008 int java_lang_Throwable::depth(oop throwable) {
2009 return throwable->int_field(depth_offset);
2010 }
2011
2012 void java_lang_Throwable::set_depth(oop throwable, int value) {
2013 throwable->int_field_put(depth_offset, value);
2014 }
2015
2016 oop java_lang_Throwable::message(oop throwable) {
2017 return throwable->obj_field(detailMessage_offset);
2018 }
2019
2020
2021 // Return Symbol for detailed_message or NULL
2022 Symbol* java_lang_Throwable::detail_message(oop throwable) {
2023 PRESERVE_EXCEPTION_MARK; // Keep original exception
2024 oop detailed_message = java_lang_Throwable::message(throwable);
2025 if (detailed_message != NULL) {
2026 return java_lang_String::as_symbol(detailed_message, THREAD);
2027 }
2028 return NULL;
2029 }
2030
2031 void java_lang_Throwable::set_message(oop throwable, oop value) {
2032 throwable->obj_field_put(detailMessage_offset, value);
2033 }
2034
2035
2036 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
2037 throwable->obj_field_put(stackTrace_offset, st_element_array);
2038 }
2039
2040 void java_lang_Throwable::clear_stacktrace(oop throwable) {
2041 set_stacktrace(throwable, NULL);
2042 }
2043
2044
2045 void java_lang_Throwable::print(oop throwable, outputStream* st) {
2046 ResourceMark rm;
2047 Klass* k = throwable->klass();
2048 assert(k != NULL, "just checking");
2049 st->print("%s", k->external_name());
2050 oop msg = message(throwable);
2051 if (msg != NULL) {
2052 st->print(": %s", java_lang_String::as_utf8_string(msg));
2053 }
2054 }
2055
2056 // After this many redefines, the stack trace is unreliable.
2057 const int MAX_VERSION = USHRT_MAX;
2058
2059 static inline bool version_matches(Method* method, int version) {
2060 assert(version < MAX_VERSION, "version is too big");
2061 return method != NULL && (method->constants()->version() == version);
2062 }
2063
2064
2065 // This class provides a simple wrapper over the internal structure of
2066 // exception backtrace to insulate users of the backtrace from needing
2067 // to know what it looks like.
2068 class BacktraceBuilder: public StackObj {
2069 friend class BacktraceIterator;
2070 private:
2071 Handle _backtrace;
2072 objArrayOop _head;
2073 typeArrayOop _methods;
2074 typeArrayOop _bcis;
2075 objArrayOop _mirrors;
2076 typeArrayOop _names; // needed to insulate method name against redefinition
2077 int _index;
2078 NoSafepointVerifier _nsv;
2079
2080 enum {
2081 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2082 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2083 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2084 trace_names_offset = java_lang_Throwable::trace_names_offset,
2085 trace_next_offset = java_lang_Throwable::trace_next_offset,
2086 trace_size = java_lang_Throwable::trace_size,
2087 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2088 };
2089
2090 // get info out of chunks
2091 static typeArrayOop get_methods(objArrayHandle chunk) {
2092 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2093 assert(methods != NULL, "method array should be initialized in backtrace");
2094 return methods;
2095 }
2096 static typeArrayOop get_bcis(objArrayHandle chunk) {
2097 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2098 assert(bcis != NULL, "bci array should be initialized in backtrace");
2099 return bcis;
2100 }
2101 static objArrayOop get_mirrors(objArrayHandle chunk) {
2102 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2103 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2104 return mirrors;
2105 }
2106 static typeArrayOop get_names(objArrayHandle chunk) {
2107 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2108 assert(names != NULL, "names array should be initialized in backtrace");
2109 return names;
2110 }
2111
2112 public:
2113
2114 // constructor for new backtrace
2115 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL) {
2116 expand(CHECK);
2117 _backtrace = Handle(THREAD, _head);
2118 _index = 0;
2119 }
2120
2121 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2122 _methods = get_methods(backtrace);
2123 _bcis = get_bcis(backtrace);
2124 _mirrors = get_mirrors(backtrace);
2125 _names = get_names(backtrace);
2126 assert(_methods->length() == _bcis->length() &&
2127 _methods->length() == _mirrors->length() &&
2128 _mirrors->length() == _names->length(),
2129 "method and source information arrays should match");
2130
2131 // head is the preallocated backtrace
2132 _head = backtrace();
2133 _backtrace = Handle(thread, _head);
2134 _index = 0;
2135 }
2136
2137 void expand(TRAPS) {
2138 objArrayHandle old_head(THREAD, _head);
2139 PauseNoSafepointVerifier pnsv(&_nsv);
2140
2141 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2142 objArrayHandle new_head(THREAD, head);
2143
2144 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2145 typeArrayHandle new_methods(THREAD, methods);
2146
2147 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2148 typeArrayHandle new_bcis(THREAD, bcis);
2149
2150 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2151 objArrayHandle new_mirrors(THREAD, mirrors);
2152
2153 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2154 typeArrayHandle new_names(THREAD, names);
2155
2156 if (!old_head.is_null()) {
2157 old_head->obj_at_put(trace_next_offset, new_head());
2158 }
2159 new_head->obj_at_put(trace_methods_offset, new_methods());
2160 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2161 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2162 new_head->obj_at_put(trace_names_offset, new_names());
2163
2164 _head = new_head();
2165 _methods = new_methods();
2166 _bcis = new_bcis();
2167 _mirrors = new_mirrors();
2168 _names = new_names();
2169 _index = 0;
2170 }
2171
2172 oop backtrace() {
2173 return _backtrace();
2174 }
2175
2176 inline void push(Method* method, int bci, TRAPS) {
2177 // Smear the -1 bci to 0 since the array only holds unsigned
2178 // shorts. The later line number lookup would just smear the -1
2179 // to a 0 even if it could be recorded.
2180 if (bci == SynchronizationEntryBCI) bci = 0;
2181
2182 if (_index >= trace_chunk_size) {
2183 methodHandle mhandle(THREAD, method);
2184 expand(CHECK);
2185 method = mhandle();
2186 }
2187
2188 _methods->ushort_at_put(_index, method->orig_method_idnum());
2189 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2190
2191 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2192 // klass owning the symbols alive so their refcounts aren't decremented.
2193 Symbol* name = method->name();
2194 _names->symbol_at_put(_index, name);
2195
2196 // We need to save the mirrors in the backtrace to keep the class
2197 // from being unloaded while we still have this stack trace.
2198 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2199 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2200 _index++;
2201 }
2202
2203 };
2204
2205 struct BacktraceElement : public StackObj {
2206 int _method_id;
2207 int _bci;
2208 int _version;
2209 Symbol* _name;
2210 Handle _mirror;
2211 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2212 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2213 };
2214
2215 class BacktraceIterator : public StackObj {
2216 int _index;
2217 objArrayHandle _result;
2218 objArrayHandle _mirrors;
2219 typeArrayHandle _methods;
2220 typeArrayHandle _bcis;
2221 typeArrayHandle _names;
2222
2223 void init(objArrayHandle result, Thread* thread) {
2224 // Get method id, bci, version and mirror from chunk
2225 _result = result;
2226 if (_result.not_null()) {
2227 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2228 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2229 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2230 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2231 _index = 0;
2232 }
2233 }
2234 public:
2235 BacktraceIterator(objArrayHandle result, Thread* thread) {
2236 init(result, thread);
2237 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2238 }
2239
2240 BacktraceElement next(Thread* thread) {
2241 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2242 _methods->ushort_at(_index),
2243 Backtrace::version_at(_bcis->int_at(_index)),
2244 Backtrace::bci_at(_bcis->int_at(_index)),
2245 _names->symbol_at(_index));
2246 _index++;
2247
2248 if (_index >= java_lang_Throwable::trace_chunk_size) {
2249 int next_offset = java_lang_Throwable::trace_next_offset;
2250 // Get next chunk
2251 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2252 init(result, thread);
2253 }
2254 return e;
2255 }
2256
2257 bool repeat() {
2258 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2259 }
2260 };
2261
2262
2263 // Print stack trace element to resource allocated buffer
2264 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2265 int version, int bci, Symbol* name) {
2266 ResourceMark rm;
2267
2268 // Get strings and string lengths
2269 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2270 const char* klass_name = holder->external_name();
2271 int buf_len = (int)strlen(klass_name);
2272
2273 char* method_name = name->as_C_string();
2274 buf_len += (int)strlen(method_name);
2275
2276 char* source_file_name = NULL;
2277 Symbol* source = Backtrace::get_source_file_name(holder, version);
2278 if (source != NULL) {
2279 source_file_name = source->as_C_string();
2280 buf_len += (int)strlen(source_file_name);
2281 }
2282
2283 char *module_name = NULL, *module_version = NULL;
2284 ModuleEntry* module = holder->module();
2285 if (module->is_named()) {
2286 module_name = module->name()->as_C_string();
2287 buf_len += (int)strlen(module_name);
2288 if (module->version() != NULL) {
2289 module_version = module->version()->as_C_string();
2290 buf_len += (int)strlen(module_version);
2291 }
2292 }
2293
2294 // Allocate temporary buffer with extra space for formatting and line number
2295 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2296
2297 // Print stack trace line in buffer
2298 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2299
2300 // Print module information
2301 if (module_name != NULL) {
2302 if (module_version != NULL) {
2303 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2304 } else {
2305 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2306 }
2307 }
2308
2309 // The method can be NULL if the requested class version is gone
2310 Method* method = holder->method_with_orig_idnum(method_id, version);
2311 if (!version_matches(method, version)) {
2312 strcat(buf, "Redefined)");
2313 } else {
2314 int line_number = Backtrace::get_line_number(method, bci);
2315 if (line_number == -2) {
2316 strcat(buf, "Native Method)");
2317 } else {
2318 if (source_file_name != NULL && (line_number != -1)) {
2319 // Sourcename and linenumber
2320 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2321 } else if (source_file_name != NULL) {
2322 // Just sourcename
2323 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2324 } else {
2325 // Neither sourcename nor linenumber
2326 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2327 }
2328 CompiledMethod* nm = method->code();
2329 if (WizardMode && nm != NULL) {
2330 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2331 }
2332 }
2333 }
2334
2335 st->print_cr("%s", buf);
2336 }
2337
2338 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
2339 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2340 int method_id = method->orig_method_idnum();
2341 int version = method->constants()->version();
2342 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2343 }
2344
2345 /**
2346 * Print the throwable message and its stack trace plus all causes by walking the
2347 * cause chain. The output looks the same as of Throwable.printStackTrace().
2348 */
2349 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2350 // First, print the message.
2351 print(throwable(), st);
2352 st->cr();
2353
2354 // Now print the stack trace.
2355 Thread* THREAD = Thread::current();
2356 while (throwable.not_null()) {
2357 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2358 if (result.is_null()) {
2359 st->print_raw_cr("\t<<no stack trace available>>");
2360 return;
2361 }
2362 BacktraceIterator iter(result, THREAD);
2363
2364 while (iter.repeat()) {
2365 BacktraceElement bte = iter.next(THREAD);
2366 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2367 }
2368 {
2369 // Call getCause() which doesn't necessarily return the _cause field.
2370 EXCEPTION_MARK;
2371 JavaValue cause(T_OBJECT);
2372 JavaCalls::call_virtual(&cause,
2373 throwable,
2374 throwable->klass(),
2375 vmSymbols::getCause_name(),
2376 vmSymbols::void_throwable_signature(),
2377 THREAD);
2378 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2379 if (HAS_PENDING_EXCEPTION) {
2380 CLEAR_PENDING_EXCEPTION;
2381 throwable = Handle();
2382 } else {
2383 throwable = Handle(THREAD, (oop) cause.get_jobject());
2384 if (throwable.not_null()) {
2385 st->print("Caused by: ");
2386 print(throwable(), st);
2387 st->cr();
2388 }
2389 }
2390 }
2391 }
2392 }
2393
2394 /**
2395 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2396 */
2397 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2398 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2399 JavaValue result(T_VOID);
2400 JavaCalls::call_virtual(&result,
2401 throwable,
2402 SystemDictionary::Throwable_klass(),
2403 vmSymbols::printStackTrace_name(),
2404 vmSymbols::void_method_signature(),
2405 THREAD);
2406 }
2407
2408 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2409 if (!StackTraceInThrowable) return;
2410 ResourceMark rm(THREAD);
2411
2412 // Start out by clearing the backtrace for this object, in case the VM
2413 // runs out of memory while allocating the stack trace
2414 set_backtrace(throwable(), NULL);
2415 // Clear lazily constructed Java level stacktrace if refilling occurs
2416 // This is unnecessary in 1.7+ but harmless
2417 clear_stacktrace(throwable());
2418
2419 int max_depth = MaxJavaStackTraceDepth;
2420 JavaThread* thread = (JavaThread*)THREAD;
2421
2422 BacktraceBuilder bt(CHECK);
2423
2424 // If there is no Java frame just return the method that was being called
2425 // with bci 0
2426 if (!thread->has_last_Java_frame()) {
2427 if (max_depth >= 1 && method() != NULL) {
2428 bt.push(method(), 0, CHECK);
2429 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2430 set_depth(throwable(), 1);
2431 set_backtrace(throwable(), bt.backtrace());
2432 }
2433 return;
2434 }
2435
2436 // Instead of using vframe directly, this version of fill_in_stack_trace
2437 // basically handles everything by hand. This significantly improved the
2438 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2439 // See bug 6333838 for more details.
2440 // The "ASSERT" here is to verify this method generates the exactly same stack
2441 // trace as utilizing vframe.
2442 #ifdef ASSERT
2443 vframeStream st(thread);
2444 methodHandle st_method(THREAD, st.method());
2445 #endif
2446 int total_count = 0;
2447 RegisterMap map(thread, false);
2448 int decode_offset = 0;
2449 CompiledMethod* nm = NULL;
2450 bool skip_fillInStackTrace_check = false;
2451 bool skip_throwableInit_check = false;
2452 bool skip_hidden = !ShowHiddenFrames;
2453
2454 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2455 Method* method = NULL;
2456 int bci = 0;
2457
2458 // Compiled java method case.
2459 if (decode_offset != 0) {
2460 DebugInfoReadStream stream(nm, decode_offset);
2461 decode_offset = stream.read_int();
2462 method = (Method*)nm->metadata_at(stream.read_int());
2463 bci = stream.read_bci();
2464 } else {
2465 if (fr.is_first_frame()) break;
2466 address pc = fr.pc();
2467 if (fr.is_interpreted_frame()) {
2468 address bcp = fr.interpreter_frame_bcp();
2469 method = fr.interpreter_frame_method();
2470 bci = method->bci_from(bcp);
2471 fr = fr.sender(&map);
2472 } else {
2473 CodeBlob* cb = fr.cb();
2474 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2475 // but non nmethod
2476 fr = fr.sender(&map);
2477 if (cb == NULL || !cb->is_compiled()) {
2478 continue;
2479 }
2480 nm = cb->as_compiled_method();
2481 if (nm->method()->is_native()) {
2482 method = nm->method();
2483 bci = 0;
2484 } else {
2485 PcDesc* pd = nm->pc_desc_at(pc);
2486 decode_offset = pd->scope_decode_offset();
2487 // if decode_offset is not equal to 0, it will execute the
2488 // "compiled java method case" at the beginning of the loop.
2489 continue;
2490 }
2491 }
2492 }
2493 #ifdef ASSERT
2494 assert(st_method() == method && st.bci() == bci,
2495 "Wrong stack trace");
2496 st.next();
2497 // vframeStream::method isn't GC-safe so store off a copy
2498 // of the Method* in case we GC.
2499 if (!st.at_end()) {
2500 st_method = st.method();
2501 }
2502 #endif
2503
2504 // the format of the stacktrace will be:
2505 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2506 // - 0 or more <init> methods for the exception class (skipped)
2507 // - rest of the stack
2508
2509 if (!skip_fillInStackTrace_check) {
2510 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2511 throwable->is_a(method->method_holder())) {
2512 continue;
2513 }
2514 else {
2515 skip_fillInStackTrace_check = true; // gone past them all
2516 }
2517 }
2518 if (!skip_throwableInit_check) {
2519 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2520
2521 // skip <init> methods of the exception class and superclasses
2522 // This is simlar to classic VM.
2523 if (method->name() == vmSymbols::object_initializer_name() &&
2524 throwable->is_a(method->method_holder())) {
2525 continue;
2526 } else {
2527 // there are none or we've seen them all - either way stop checking
2528 skip_throwableInit_check = true;
2529 }
2530 }
2531 if (method->is_hidden()) {
2532 if (skip_hidden) continue;
2533 }
2534 bt.push(method, bci, CHECK);
2535 total_count++;
2536 }
2537
2538 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2539
2540 // Put completed stack trace into throwable object
2541 set_backtrace(throwable(), bt.backtrace());
2542 set_depth(throwable(), total_count);
2543 }
2544
2545 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2546 // No-op if stack trace is disabled
2547 if (!StackTraceInThrowable) {
2548 return;
2549 }
2550
2551 // Disable stack traces for some preallocated out of memory errors
2552 if (!Universe::should_fill_in_stack_trace(throwable)) {
2553 return;
2554 }
2555
2556 PRESERVE_EXCEPTION_MARK;
2557
2558 JavaThread* thread = JavaThread::active();
2559 fill_in_stack_trace(throwable, method, thread);
2560 // ignore exceptions thrown during stack trace filling
2561 CLEAR_PENDING_EXCEPTION;
2562 }
2563
2564 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2565 // Allocate stack trace - backtrace is created but not filled in
2566
2567 // No-op if stack trace is disabled
2568 if (!StackTraceInThrowable) return;
2569 BacktraceBuilder bt(CHECK); // creates a backtrace
2570 set_backtrace(throwable(), bt.backtrace());
2571 }
2572
2573
2574 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2575 // Fill in stack trace into preallocated backtrace (no GC)
2576
2577 // No-op if stack trace is disabled
2578 if (!StackTraceInThrowable) return;
2579
2580 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2581
2582 JavaThread* THREAD = JavaThread::current();
2583
2584 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2585 assert(backtrace.not_null(), "backtrace should have been preallocated");
2586
2587 ResourceMark rm(THREAD);
2588 vframeStream st(THREAD);
2589
2590 BacktraceBuilder bt(THREAD, backtrace);
2591
2592 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2593 // methods as preallocated errors aren't created by "java" code.
2594
2595 // fill in as much stack trace as possible
2596 int chunk_count = 0;
2597 for (;!st.at_end(); st.next()) {
2598 bt.push(st.method(), st.bci(), CHECK);
2599 chunk_count++;
2600
2601 // Bail-out for deep stacks
2602 if (chunk_count >= trace_chunk_size) break;
2603 }
2604 set_depth(throwable(), chunk_count);
2605 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2606
2607 // We support the Throwable immutability protocol defined for Java 7.
2608 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2609 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2610 }
2611
2612 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2613 objArrayHandle stack_trace_array_h, TRAPS) {
2614
2615 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2616 THROW(vmSymbols::java_lang_NullPointerException());
2617 }
2618
2619 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2620
2621 if (stack_trace_array_h->length() != depth(throwable())) {
2622 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2623 }
2624
2625 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2626 BacktraceIterator iter(result, THREAD);
2627
2628 int index = 0;
2629 while (iter.repeat()) {
2630 BacktraceElement bte = iter.next(THREAD);
2631
2632 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2633
2634 if (stack_trace_element.is_null()) {
2635 THROW(vmSymbols::java_lang_NullPointerException());
2636 }
2637
2638 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2639 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2640
2641 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2642 method,
2643 bte._version,
2644 bte._bci,
2645 bte._name, CHECK);
2646 }
2647 }
2648
2649 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2650 // Allocate java.lang.StackTraceElement instance
2651 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2652 assert(k != NULL, "must be loaded in 1.4+");
2653 if (k->should_be_initialized()) {
2654 k->initialize(CHECK_0);
2655 }
2656
2657 Handle element = k->allocate_instance_handle(CHECK_0);
2658
2659 int version = method->constants()->version();
2660 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
2661 return element();
2662 }
2663
2664 void java_lang_StackTraceElement::fill_in(Handle element,
2665 InstanceKlass* holder, const methodHandle& method,
2666 int version, int bci, Symbol* name, TRAPS) {
2667 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2668
2669 // Fill in class name
2670 ResourceMark rm(THREAD);
2671 const char* str = holder->external_name();
2672 oop classname = StringTable::intern((char*) str, CHECK);
2673 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2674 java_lang_StackTraceElement::set_declaringClassObject(element(), holder->java_mirror());
2675
2676 oop loader = holder->class_loader();
2677 if (loader != NULL) {
2678 oop loader_name = java_lang_ClassLoader::name(loader);
2679 if (loader_name != NULL)
2680 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2681 }
2682
2683 // Fill in method name
2684 oop methodname = StringTable::intern(name, CHECK);
2685 java_lang_StackTraceElement::set_methodName(element(), methodname);
2686
2687 // Fill in module name and version
2688 ModuleEntry* module = holder->module();
2689 if (module->is_named()) {
2690 oop module_name = StringTable::intern(module->name(), CHECK);
2691 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2692 oop module_version;
2693 if (module->version() != NULL) {
2694 module_version = StringTable::intern(module->version(), CHECK);
2695 } else {
2696 module_version = NULL;
2697 }
2698 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2699 }
2700
2701 if (method() == NULL || !version_matches(method(), version)) {
2702 // The method was redefined, accurate line number information isn't available
2703 java_lang_StackTraceElement::set_fileName(element(), NULL);
2704 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2705 } else {
2706 // Fill in source file name and line number.
2707 Symbol* source = Backtrace::get_source_file_name(holder, version);
2708 if (ShowHiddenFrames && source == NULL)
2709 source = vmSymbols::unknown_class_name();
2710 oop filename = StringTable::intern(source, CHECK);
2711 java_lang_StackTraceElement::set_fileName(element(), filename);
2712
2713 int line_number = Backtrace::get_line_number(method, bci);
2714 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2715 }
2716 }
2717
2718 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2719 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2720 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2721 // we should expand MemberName::name when Throwable uses StackTrace
2722 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2723 return method;
2724 }
2725
2726 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2727 // set Method* or mid/cpref
2728 Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2729 InstanceKlass* ik = method->method_holder();
2730 CallInfo info(method(), ik, CHECK);
2731 MethodHandles::init_method_MemberName(mname, info);
2732 // set bci
2733 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2734 // method may be redefined; store the version
2735 int version = method->constants()->version();
2736 assert((jushort)version == version, "version should be short");
2737 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2738 }
2739
2740 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2741 ResourceMark rm(THREAD);
2742 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2743 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2744 InstanceKlass* holder = InstanceKlass::cast(clazz);
2745 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2746
2747 short version = stackFrame->short_field(_version_offset);
2748 short bci = stackFrame->short_field(_bci_offset);
2749 Symbol* name = method->name();
2750 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, name, CHECK);
2751 }
2752
2753 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2754 macro(_memberName_offset, k, "memberName", object_signature, false); \
2755 macro(_bci_offset, k, "bci", short_signature, false)
2756
2757 void java_lang_StackFrameInfo::compute_offsets() {
2758 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2759 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2760 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2761 }
2762
2763 #if INCLUDE_CDS
2764 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2765 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2766 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2767 }
2768 #endif
2769
2770 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2771 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2772 macro(_locals_offset, k, "locals", object_array_signature, false); \
2773 macro(_operands_offset, k, "operands", object_array_signature, false); \
2774 macro(_mode_offset, k, "mode", int_signature, false)
2775
2776 void java_lang_LiveStackFrameInfo::compute_offsets() {
2777 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2778 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2779 }
2780
2781 #if INCLUDE_CDS
2782 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2783 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2784 }
2785 #endif
2786
2787 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2788 macro(override_offset, k, "override", bool_signature, false)
2789
2790 void java_lang_reflect_AccessibleObject::compute_offsets() {
2791 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2792 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2793 }
2794
2795 #if INCLUDE_CDS
2796 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2797 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2798 }
2799 #endif
2800
2801 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2802 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2803 return (jboolean) reflect->bool_field(override_offset);
2804 }
2805
2806 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2807 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2808 reflect->bool_field_put(override_offset, (int) value);
2809 }
2810
2811 #define METHOD_FIELDS_DO(macro) \
2812 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2813 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
2814 macro(returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2815 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2816 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2817 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2818 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2819 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
2820 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
2821 macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
2822 macro##_OPTIONAL(annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature); \
2823 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
2824
2825 void java_lang_reflect_Method::compute_offsets() {
2826 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2827 // The generic signature and annotations fields are only present in 1.5
2828 signature_offset = -1;
2829 annotations_offset = -1;
2830 parameter_annotations_offset = -1;
2831 annotation_default_offset = -1;
2832 type_annotations_offset = -1;
2833 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2834 }
2835
2836 #if INCLUDE_CDS
2837 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2838 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2839 }
2840 #endif
2841
2842 Handle java_lang_reflect_Method::create(TRAPS) {
2843 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2844 Klass* klass = SystemDictionary::reflect_Method_klass();
2845 // This class is eagerly initialized during VM initialization, since we keep a refence
2846 // to one of the methods
2847 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2848 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2849 }
2850
2851 oop java_lang_reflect_Method::clazz(oop reflect) {
2852 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2853 return reflect->obj_field(clazz_offset);
2854 }
2855
2856 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2857 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2858 reflect->obj_field_put(clazz_offset, value);
2859 }
2860
2861 int java_lang_reflect_Method::slot(oop reflect) {
2862 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2863 return reflect->int_field(slot_offset);
2864 }
2865
2866 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2867 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2868 reflect->int_field_put(slot_offset, value);
2869 }
2870
2871 oop java_lang_reflect_Method::name(oop method) {
2872 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2873 return method->obj_field(name_offset);
2874 }
2875
2876 void java_lang_reflect_Method::set_name(oop method, oop value) {
2877 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2878 method->obj_field_put(name_offset, value);
2879 }
2880
2881 oop java_lang_reflect_Method::return_type(oop method) {
2882 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2883 return method->obj_field(returnType_offset);
2884 }
2885
2886 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2887 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2888 method->obj_field_put(returnType_offset, value);
2889 }
2890
2891 oop java_lang_reflect_Method::parameter_types(oop method) {
2892 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2893 return method->obj_field(parameterTypes_offset);
2894 }
2895
2896 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2897 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2898 method->obj_field_put(parameterTypes_offset, value);
2899 }
2900
2901 oop java_lang_reflect_Method::exception_types(oop method) {
2902 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2903 return method->obj_field(exceptionTypes_offset);
2904 }
2905
2906 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2907 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2908 method->obj_field_put(exceptionTypes_offset, value);
2909 }
2910
2911 int java_lang_reflect_Method::modifiers(oop method) {
2912 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2913 return method->int_field(modifiers_offset);
2914 }
2915
2916 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2917 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2918 method->int_field_put(modifiers_offset, value);
2919 }
2920
2921 bool java_lang_reflect_Method::has_signature_field() {
2922 return (signature_offset >= 0);
2923 }
2924
2925 oop java_lang_reflect_Method::signature(oop method) {
2926 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2927 assert(has_signature_field(), "signature field must be present");
2928 return method->obj_field(signature_offset);
2929 }
2930
2931 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2932 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2933 assert(has_signature_field(), "signature field must be present");
2934 method->obj_field_put(signature_offset, value);
2935 }
2936
2937 bool java_lang_reflect_Method::has_annotations_field() {
2938 return (annotations_offset >= 0);
2939 }
2940
2941 oop java_lang_reflect_Method::annotations(oop method) {
2942 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2943 assert(has_annotations_field(), "annotations field must be present");
2944 return method->obj_field(annotations_offset);
2945 }
2946
2947 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2948 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2949 assert(has_annotations_field(), "annotations field must be present");
2950 method->obj_field_put(annotations_offset, value);
2951 }
2952
2953 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2954 return (parameter_annotations_offset >= 0);
2955 }
2956
2957 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2958 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2959 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2960 return method->obj_field(parameter_annotations_offset);
2961 }
2962
2963 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2964 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2965 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2966 method->obj_field_put(parameter_annotations_offset, value);
2967 }
2968
2969 bool java_lang_reflect_Method::has_annotation_default_field() {
2970 return (annotation_default_offset >= 0);
2971 }
2972
2973 oop java_lang_reflect_Method::annotation_default(oop method) {
2974 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2975 assert(has_annotation_default_field(), "annotation default field must be present");
2976 return method->obj_field(annotation_default_offset);
2977 }
2978
2979 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2980 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2981 assert(has_annotation_default_field(), "annotation default field must be present");
2982 method->obj_field_put(annotation_default_offset, value);
2983 }
2984
2985 bool java_lang_reflect_Method::has_type_annotations_field() {
2986 return (type_annotations_offset >= 0);
2987 }
2988
2989 oop java_lang_reflect_Method::type_annotations(oop method) {
2990 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2991 assert(has_type_annotations_field(), "type_annotations field must be present");
2992 return method->obj_field(type_annotations_offset);
2993 }
2994
2995 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2996 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2997 assert(has_type_annotations_field(), "type_annotations field must be present");
2998 method->obj_field_put(type_annotations_offset, value);
2999 }
3000
3001 #define CONSTRUCTOR_FIELDS_DO(macro) \
3002 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3003 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
3004 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
3005 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3006 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3007 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
3008 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
3009 macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
3010 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
3011
3012
3013 void java_lang_reflect_Constructor::compute_offsets() {
3014 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
3015 // The generic signature and annotations fields are only present in 1.5
3016 signature_offset = -1;
3017 annotations_offset = -1;
3018 parameter_annotations_offset = -1;
3019 type_annotations_offset = -1;
3020 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3021 }
3022
3023 #if INCLUDE_CDS
3024 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
3025 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3026 }
3027 #endif
3028
3029 Handle java_lang_reflect_Constructor::create(TRAPS) {
3030 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3031 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
3032 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3033 InstanceKlass* ik = InstanceKlass::cast(k);
3034 // Ensure it is initialized
3035 ik->initialize(CHECK_NH);
3036 return ik->allocate_instance_handle(THREAD);
3037 }
3038
3039 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3040 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3041 return reflect->obj_field(clazz_offset);
3042 }
3043
3044 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3045 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3046 reflect->obj_field_put(clazz_offset, value);
3047 }
3048
3049 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3050 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3051 return constructor->obj_field(parameterTypes_offset);
3052 }
3053
3054 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3055 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3056 constructor->obj_field_put(parameterTypes_offset, value);
3057 }
3058
3059 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
3060 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3061 return constructor->obj_field(exceptionTypes_offset);
3062 }
3063
3064 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3065 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3066 constructor->obj_field_put(exceptionTypes_offset, value);
3067 }
3068
3069 int java_lang_reflect_Constructor::slot(oop reflect) {
3070 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3071 return reflect->int_field(slot_offset);
3072 }
3073
3074 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3075 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3076 reflect->int_field_put(slot_offset, value);
3077 }
3078
3079 int java_lang_reflect_Constructor::modifiers(oop constructor) {
3080 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3081 return constructor->int_field(modifiers_offset);
3082 }
3083
3084 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3085 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3086 constructor->int_field_put(modifiers_offset, value);
3087 }
3088
3089 bool java_lang_reflect_Constructor::has_signature_field() {
3090 return (signature_offset >= 0);
3091 }
3092
3093 oop java_lang_reflect_Constructor::signature(oop constructor) {
3094 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3095 assert(has_signature_field(), "signature field must be present");
3096 return constructor->obj_field(signature_offset);
3097 }
3098
3099 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3100 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3101 assert(has_signature_field(), "signature field must be present");
3102 constructor->obj_field_put(signature_offset, value);
3103 }
3104
3105 bool java_lang_reflect_Constructor::has_annotations_field() {
3106 return (annotations_offset >= 0);
3107 }
3108
3109 oop java_lang_reflect_Constructor::annotations(oop constructor) {
3110 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3111 assert(has_annotations_field(), "annotations field must be present");
3112 return constructor->obj_field(annotations_offset);
3113 }
3114
3115 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3116 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3117 assert(has_annotations_field(), "annotations field must be present");
3118 constructor->obj_field_put(annotations_offset, value);
3119 }
3120
3121 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
3122 return (parameter_annotations_offset >= 0);
3123 }
3124
3125 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
3126 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3127 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3128 return method->obj_field(parameter_annotations_offset);
3129 }
3130
3131 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3132 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3133 assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3134 method->obj_field_put(parameter_annotations_offset, value);
3135 }
3136
3137 bool java_lang_reflect_Constructor::has_type_annotations_field() {
3138 return (type_annotations_offset >= 0);
3139 }
3140
3141 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
3142 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3143 assert(has_type_annotations_field(), "type_annotations field must be present");
3144 return constructor->obj_field(type_annotations_offset);
3145 }
3146
3147 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
3148 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3149 assert(has_type_annotations_field(), "type_annotations field must be present");
3150 constructor->obj_field_put(type_annotations_offset, value);
3151 }
3152
3153 #define FIELD_FIELDS_DO(macro) \
3154 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3155 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3156 macro(type_offset, k, vmSymbols::type_name(), class_signature, false); \
3157 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3158 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3159 macro##_OPTIONAL(signature_offset, k, vmSymbols::signature_name(), string_signature); \
3160 macro##_OPTIONAL(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature); \
3161 macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(), byte_array_signature)
3162
3163 void java_lang_reflect_Field::compute_offsets() {
3164 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3165 // The generic signature and annotations fields are only present in 1.5
3166 signature_offset = -1;
3167 annotations_offset = -1;
3168 type_annotations_offset = -1;
3169 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3170 }
3171
3172 #if INCLUDE_CDS
3173 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3174 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3175 }
3176 #endif
3177
3178 Handle java_lang_reflect_Field::create(TRAPS) {
3179 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3180 Symbol* name = vmSymbols::java_lang_reflect_Field();
3181 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3182 InstanceKlass* ik = InstanceKlass::cast(k);
3183 // Ensure it is initialized
3184 ik->initialize(CHECK_NH);
3185 return ik->allocate_instance_handle(THREAD);
3186 }
3187
3188 oop java_lang_reflect_Field::clazz(oop reflect) {
3189 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3190 return reflect->obj_field(clazz_offset);
3191 }
3192
3193 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3194 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3195 reflect->obj_field_put(clazz_offset, value);
3196 }
3197
3198 oop java_lang_reflect_Field::name(oop field) {
3199 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3200 return field->obj_field(name_offset);
3201 }
3202
3203 void java_lang_reflect_Field::set_name(oop field, oop value) {
3204 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3205 field->obj_field_put(name_offset, value);
3206 }
3207
3208 oop java_lang_reflect_Field::type(oop field) {
3209 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3210 return field->obj_field(type_offset);
3211 }
3212
3213 void java_lang_reflect_Field::set_type(oop field, oop value) {
3214 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3215 field->obj_field_put(type_offset, value);
3216 }
3217
3218 int java_lang_reflect_Field::slot(oop reflect) {
3219 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3220 return reflect->int_field(slot_offset);
3221 }
3222
3223 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3224 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3225 reflect->int_field_put(slot_offset, value);
3226 }
3227
3228 int java_lang_reflect_Field::modifiers(oop field) {
3229 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3230 return field->int_field(modifiers_offset);
3231 }
3232
3233 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3234 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3235 field->int_field_put(modifiers_offset, value);
3236 }
3237
3238 bool java_lang_reflect_Field::has_signature_field() {
3239 return (signature_offset >= 0);
3240 }
3241
3242 oop java_lang_reflect_Field::signature(oop field) {
3243 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3244 assert(has_signature_field(), "signature field must be present");
3245 return field->obj_field(signature_offset);
3246 }
3247
3248 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3249 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3250 assert(has_signature_field(), "signature field must be present");
3251 field->obj_field_put(signature_offset, value);
3252 }
3253
3254 bool java_lang_reflect_Field::has_annotations_field() {
3255 return (annotations_offset >= 0);
3256 }
3257
3258 oop java_lang_reflect_Field::annotations(oop field) {
3259 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3260 assert(has_annotations_field(), "annotations field must be present");
3261 return field->obj_field(annotations_offset);
3262 }
3263
3264 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3265 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3266 assert(has_annotations_field(), "annotations field must be present");
3267 field->obj_field_put(annotations_offset, value);
3268 }
3269
3270 bool java_lang_reflect_Field::has_type_annotations_field() {
3271 return (type_annotations_offset >= 0);
3272 }
3273
3274 oop java_lang_reflect_Field::type_annotations(oop field) {
3275 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3276 assert(has_type_annotations_field(), "type_annotations field must be present");
3277 return field->obj_field(type_annotations_offset);
3278 }
3279
3280 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
3281 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3282 assert(has_type_annotations_field(), "type_annotations field must be present");
3283 field->obj_field_put(type_annotations_offset, value);
3284 }
3285
3286 #define CONSTANTPOOL_FIELDS_DO(macro) \
3287 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3288
3289 void reflect_ConstantPool::compute_offsets() {
3290 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3291 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3292 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3293 }
3294
3295 #if INCLUDE_CDS
3296 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3297 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3298 }
3299 #endif
3300
3301 #define PARAMETER_FIELDS_DO(macro) \
3302 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3303 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3304 macro(index_offset, k, vmSymbols::index_name(), int_signature, false); \
3305 macro(executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3306
3307 void java_lang_reflect_Parameter::compute_offsets() {
3308 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3309 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3310 }
3311
3312 #if INCLUDE_CDS
3313 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3314 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3315 }
3316 #endif
3317
3318 Handle java_lang_reflect_Parameter::create(TRAPS) {
3319 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3320 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3321 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3322 InstanceKlass* ik = InstanceKlass::cast(k);
3323 // Ensure it is initialized
3324 ik->initialize(CHECK_NH);
3325 return ik->allocate_instance_handle(THREAD);
3326 }
3327
3328 oop java_lang_reflect_Parameter::name(oop param) {
3329 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3330 return param->obj_field(name_offset);
3331 }
3332
3333 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3334 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3335 param->obj_field_put(name_offset, value);
3336 }
3337
3338 int java_lang_reflect_Parameter::modifiers(oop param) {
3339 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3340 return param->int_field(modifiers_offset);
3341 }
3342
3343 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3344 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3345 param->int_field_put(modifiers_offset, value);
3346 }
3347
3348 int java_lang_reflect_Parameter::index(oop param) {
3349 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3350 return param->int_field(index_offset);
3351 }
3352
3353 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3354 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3355 param->int_field_put(index_offset, value);
3356 }
3357
3358 oop java_lang_reflect_Parameter::executable(oop param) {
3359 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3360 return param->obj_field(executable_offset);
3361 }
3362
3363 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3364 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3365 param->obj_field_put(executable_offset, value);
3366 }
3367
3368
3369 int java_lang_Module::loader_offset;
3370 int java_lang_Module::name_offset;
3371 int java_lang_Module::_module_entry_offset = -1;
3372
3373 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3374 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3375 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3376 vmSymbols::java_lang_module_init_signature(),
3377 loader, module_name, CHECK_NH);
3378 }
3379
3380 #define MODULE_FIELDS_DO(macro) \
3381 macro(loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3382 macro(name_offset, k, vmSymbols::name_name(), string_signature, false)
3383
3384 void java_lang_Module::compute_offsets() {
3385 InstanceKlass* k = SystemDictionary::Module_klass();
3386 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3387 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3388 }
3389
3390 #if INCLUDE_CDS
3391 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3392 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3393 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3394 }
3395 #endif
3396
3397 oop java_lang_Module::loader(oop module) {
3398 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3399 return module->obj_field(loader_offset);
3400 }
3401
3402 void java_lang_Module::set_loader(oop module, oop value) {
3403 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3404 module->obj_field_put(loader_offset, value);
3405 }
3406
3407 oop java_lang_Module::name(oop module) {
3408 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3409 return module->obj_field(name_offset);
3410 }
3411
3412 void java_lang_Module::set_name(oop module, oop value) {
3413 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3414 module->obj_field_put(name_offset, value);
3415 }
3416
3417 ModuleEntry* java_lang_Module::module_entry(oop module) {
3418 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3419 assert(module != NULL, "module can't be null");
3420 assert(oopDesc::is_oop(module), "module must be oop");
3421
3422 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3423 if (module_entry == NULL) {
3424 // If the inject field containing the ModuleEntry* is null then return the
3425 // class loader's unnamed module.
3426 oop loader = java_lang_Module::loader(module);
3427 Handle h_loader = Handle(Thread::current(), loader);
3428 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3429 return loader_cld->unnamed_module();
3430 }
3431 return module_entry;
3432 }
3433
3434 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3435 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3436 assert(module != NULL, "module can't be null");
3437 assert(oopDesc::is_oop(module), "module must be oop");
3438 module->address_field_put(_module_entry_offset, (address)module_entry);
3439 }
3440
3441 Handle reflect_ConstantPool::create(TRAPS) {
3442 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3443 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3444 // Ensure it is initialized
3445 k->initialize(CHECK_NH);
3446 return k->allocate_instance_handle(THREAD);
3447 }
3448
3449
3450 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3451 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3452 oop mirror = value->pool_holder()->java_mirror();
3453 // Save the mirror to get back the constant pool.
3454 reflect->obj_field_put(_oop_offset, mirror);
3455 }
3456
3457 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3458 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3459
3460 oop mirror = reflect->obj_field(_oop_offset);
3461 Klass* k = java_lang_Class::as_Klass(mirror);
3462 assert(k->is_instance_klass(), "Must be");
3463
3464 // Get the constant pool back from the klass. Since class redefinition
3465 // merges the new constant pool into the old, this is essentially the
3466 // same constant pool as the original. If constant pool merging is
3467 // no longer done in the future, this will have to change to save
3468 // the original.
3469 return InstanceKlass::cast(k)->constants();
3470 }
3471
3472 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3473 macro(_base_offset, k, "base", object_signature, false)
3474
3475 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3476 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3477 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3478 }
3479
3480 #if INCLUDE_CDS
3481 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3482 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3483 }
3484 #endif
3485
3486 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3487 Klass* k = SystemDictionary::box_klass(type);
3488 if (k == NULL) return NULL;
3489 InstanceKlass* ik = InstanceKlass::cast(k);
3490 if (!ik->is_initialized()) ik->initialize(CHECK_0);
3491 return ik->allocate_instance(THREAD);
3492 }
3493
3494
3495 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3496 oop box = initialize_and_allocate(type, CHECK_0);
3497 if (box == NULL) return NULL;
3498 switch (type) {
3499 case T_BOOLEAN:
3500 box->bool_field_put(value_offset, value->z);
3501 break;
3502 case T_CHAR:
3503 box->char_field_put(value_offset, value->c);
3504 break;
3505 case T_FLOAT:
3506 box->float_field_put(value_offset, value->f);
3507 break;
3508 case T_DOUBLE:
3509 box->double_field_put(long_value_offset, value->d);
3510 break;
3511 case T_BYTE:
3512 box->byte_field_put(value_offset, value->b);
3513 break;
3514 case T_SHORT:
3515 box->short_field_put(value_offset, value->s);
3516 break;
3517 case T_INT:
3518 box->int_field_put(value_offset, value->i);
3519 break;
3520 case T_LONG:
3521 box->long_field_put(long_value_offset, value->j);
3522 break;
3523 default:
3524 return NULL;
3525 }
3526 return box;
3527 }
3528
3529
3530 BasicType java_lang_boxing_object::basic_type(oop box) {
3531 if (box == NULL) return T_ILLEGAL;
3532 BasicType type = SystemDictionary::box_klass_type(box->klass());
3533 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3534 return T_ILLEGAL;
3535 return type;
3536 }
3537
3538
3539 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3540 BasicType type = SystemDictionary::box_klass_type(box->klass());
3541 switch (type) {
3542 case T_BOOLEAN:
3543 value->z = box->bool_field(value_offset);
3544 break;
3545 case T_CHAR:
3546 value->c = box->char_field(value_offset);
3547 break;
3548 case T_FLOAT:
3549 value->f = box->float_field(value_offset);
3550 break;
3551 case T_DOUBLE:
3552 value->d = box->double_field(long_value_offset);
3553 break;
3554 case T_BYTE:
3555 value->b = box->byte_field(value_offset);
3556 break;
3557 case T_SHORT:
3558 value->s = box->short_field(value_offset);
3559 break;
3560 case T_INT:
3561 value->i = box->int_field(value_offset);
3562 break;
3563 case T_LONG:
3564 value->j = box->long_field(long_value_offset);
3565 break;
3566 default:
3567 return T_ILLEGAL;
3568 } // end switch
3569 return type;
3570 }
3571
3572
3573 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3574 BasicType type = SystemDictionary::box_klass_type(box->klass());
3575 switch (type) {
3576 case T_BOOLEAN:
3577 box->bool_field_put(value_offset, value->z);
3578 break;
3579 case T_CHAR:
3580 box->char_field_put(value_offset, value->c);
3581 break;
3582 case T_FLOAT:
3583 box->float_field_put(value_offset, value->f);
3584 break;
3585 case T_DOUBLE:
3586 box->double_field_put(long_value_offset, value->d);
3587 break;
3588 case T_BYTE:
3589 box->byte_field_put(value_offset, value->b);
3590 break;
3591 case T_SHORT:
3592 box->short_field_put(value_offset, value->s);
3593 break;
3594 case T_INT:
3595 box->int_field_put(value_offset, value->i);
3596 break;
3597 case T_LONG:
3598 box->long_field_put(long_value_offset, value->j);
3599 break;
3600 default:
3601 return T_ILLEGAL;
3602 } // end switch
3603 return type;
3604 }
3605
3606
3607 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3608 switch (type) {
3609 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3610 case T_CHAR: st->print("%d", value->c); break;
3611 case T_BYTE: st->print("%d", value->b); break;
3612 case T_SHORT: st->print("%d", value->s); break;
3613 case T_INT: st->print("%d", value->i); break;
3614 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3615 case T_FLOAT: st->print("%f", value->f); break;
3616 case T_DOUBLE: st->print("%lf", value->d); break;
3617 default: st->print("type %d?", type); break;
3618 }
3619 }
3620
3621 // Support for java_lang_ref_Reference
3622
3623 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3624 assert(obj != NULL, "sanity");
3625 if (offset != java_lang_ref_Reference::referent_offset) {
3626 return false;
3627 }
3628
3629 Klass* k = obj->klass();
3630 if (!k->is_instance_klass()) {
3631 return false;
3632 }
3633
3634 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3635 bool is_reference = ik->reference_type() != REF_NONE;
3636 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3637 return is_reference;
3638 }
3639
3640 // Support for java_lang_ref_SoftReference
3641 //
3642
3643 #define SOFTREFERENCE_FIELDS_DO(macro) \
3644 macro(timestamp_offset, k, "timestamp", long_signature, false); \
3645 macro(static_clock_offset, k, "clock", long_signature, true)
3646
3647 void java_lang_ref_SoftReference::compute_offsets() {
3648 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3649 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3650 }
3651
3652 #if INCLUDE_CDS
3653 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3654 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3655 }
3656 #endif
3657
3658 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3659 return ref->long_field(timestamp_offset);
3660 }
3661
3662 jlong java_lang_ref_SoftReference::clock() {
3663 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3664 oop base = ik->static_field_base_raw();
3665 return base->long_field(static_clock_offset);
3666 }
3667
3668 void java_lang_ref_SoftReference::set_clock(jlong value) {
3669 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3670 oop base = ik->static_field_base_raw();
3671 base->long_field_put(static_clock_offset, value);
3672 }
3673
3674 // Support for java_lang_invoke_DirectMethodHandle
3675
3676 int java_lang_invoke_DirectMethodHandle::_member_offset;
3677
3678 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3679 oop member_name = NULL;
3680 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3681 "a DirectMethodHandle oop is expected");
3682 return dmh->obj_field(member_offset_in_bytes());
3683 }
3684
3685 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3686 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3687
3688 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3689 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3690 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3691 }
3692
3693 #if INCLUDE_CDS
3694 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3695 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3696 }
3697 #endif
3698
3699 // Support for java_lang_invoke_MethodHandle
3700
3701 int java_lang_invoke_MethodHandle::_type_offset;
3702 int java_lang_invoke_MethodHandle::_form_offset;
3703
3704 int java_lang_invoke_MemberName::_clazz_offset;
3705 int java_lang_invoke_MemberName::_name_offset;
3706 int java_lang_invoke_MemberName::_type_offset;
3707 int java_lang_invoke_MemberName::_flags_offset;
3708 int java_lang_invoke_MemberName::_method_offset;
3709 int java_lang_invoke_MemberName::_vmindex_offset;
3710
3711 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3712 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3713
3714 int java_lang_invoke_LambdaForm::_vmentry_offset;
3715
3716 #define METHODHANDLE_FIELDS_DO(macro) \
3717 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3718 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3719
3720 void java_lang_invoke_MethodHandle::compute_offsets() {
3721 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3722 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3723 }
3724
3725 #if INCLUDE_CDS
3726 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3727 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3728 }
3729 #endif
3730
3731 #define MEMBERNAME_FIELDS_DO(macro) \
3732 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3733 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3734 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3735 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3736 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3737
3738 void java_lang_invoke_MemberName::compute_offsets() {
3739 InstanceKlass* k = SystemDictionary::MemberName_klass();
3740 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3741 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3742 }
3743
3744 #if INCLUDE_CDS
3745 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3746 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3747 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3748 }
3749 #endif
3750
3751 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3752 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3753 assert(k != NULL, "jdk mismatch");
3754 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3755 }
3756
3757 #if INCLUDE_CDS
3758 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3759 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3760 }
3761 #endif
3762
3763 #define LAMBDAFORM_FIELDS_DO(macro) \
3764 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3765
3766 void java_lang_invoke_LambdaForm::compute_offsets() {
3767 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3768 assert (k != NULL, "jdk mismatch");
3769 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3770 }
3771
3772 #if INCLUDE_CDS
3773 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3774 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3775 }
3776 #endif
3777
3778 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3779 return obj != NULL && is_subclass(obj->klass());
3780 }
3781
3782
3783 oop java_lang_invoke_MethodHandle::type(oop mh) {
3784 return mh->obj_field(_type_offset);
3785 }
3786
3787 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3788 mh->obj_field_put(_type_offset, mtype);
3789 }
3790
3791 oop java_lang_invoke_MethodHandle::form(oop mh) {
3792 assert(_form_offset != 0, "");
3793 return mh->obj_field(_form_offset);
3794 }
3795
3796 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3797 assert(_form_offset != 0, "");
3798 mh->obj_field_put(_form_offset, lform);
3799 }
3800
3801 /// MemberName accessors
3802
3803 oop java_lang_invoke_MemberName::clazz(oop mname) {
3804 assert(is_instance(mname), "wrong type");
3805 return mname->obj_field(_clazz_offset);
3806 }
3807
3808 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3809 assert(is_instance(mname), "wrong type");
3810 mname->obj_field_put(_clazz_offset, clazz);
3811 }
3812
3813 oop java_lang_invoke_MemberName::name(oop mname) {
3814 assert(is_instance(mname), "wrong type");
3815 return mname->obj_field(_name_offset);
3816 }
3817
3818 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3819 assert(is_instance(mname), "wrong type");
3820 mname->obj_field_put(_name_offset, name);
3821 }
3822
3823 oop java_lang_invoke_MemberName::type(oop mname) {
3824 assert(is_instance(mname), "wrong type");
3825 return mname->obj_field(_type_offset);
3826 }
3827
3828 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3829 assert(is_instance(mname), "wrong type");
3830 mname->obj_field_put(_type_offset, type);
3831 }
3832
3833 int java_lang_invoke_MemberName::flags(oop mname) {
3834 assert(is_instance(mname), "wrong type");
3835 return mname->int_field(_flags_offset);
3836 }
3837
3838 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3839 assert(is_instance(mname), "wrong type");
3840 mname->int_field_put(_flags_offset, flags);
3841 }
3842
3843
3844 // Return vmtarget from ResolvedMethodName method field through indirection
3845 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3846 assert(is_instance(mname), "wrong type");
3847 oop method = mname->obj_field(_method_offset);
3848 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3849 }
3850
3851 bool java_lang_invoke_MemberName::is_method(oop mname) {
3852 assert(is_instance(mname), "must be MemberName");
3853 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3854 }
3855
3856 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3857 assert(is_instance(mname), "wrong type");
3858 mname->obj_field_put(_method_offset, resolved_method);
3859 }
3860
3861 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3862 assert(is_instance(mname), "wrong type");
3863 return (intptr_t) mname->address_field(_vmindex_offset);
3864 }
3865
3866 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3867 assert(is_instance(mname), "wrong type");
3868 mname->address_field_put(_vmindex_offset, (address) index);
3869 }
3870
3871
3872 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3873 assert(is_instance(resolved_method), "wrong type");
3874 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3875 assert(m->is_method(), "must be");
3876 return m;
3877 }
3878
3879 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3880 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3881 assert(is_instance(resolved_method), "wrong type");
3882 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3883 }
3884
3885 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3886 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3887 oop resolved_method = ResolvedMethodTable::find_method(m());
3888 if (resolved_method == NULL) {
3889 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3890 if (!k->is_initialized()) {
3891 k->initialize(CHECK_NULL);
3892 }
3893 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3894 new_resolved_method->address_field_put(_vmtarget_offset, (address)m());
3895 // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3896 // distinct loaders) to ensure the metadata is kept alive.
3897 // This mirror may be different than the one in clazz field.
3898 new_resolved_method->obj_field_put(_vmholder_offset, m->method_holder()->java_mirror());
3899 resolved_method = ResolvedMethodTable::add_method(Handle(THREAD, new_resolved_method));
3900 }
3901 return resolved_method;
3902 }
3903
3904 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3905 assert(is_instance(lform), "wrong type");
3906 return lform->obj_field(_vmentry_offset);
3907 }
3908
3909
3910 // Support for java_lang_invoke_MethodType
3911
3912 int java_lang_invoke_MethodType::_rtype_offset;
3913 int java_lang_invoke_MethodType::_ptypes_offset;
3914
3915 #define METHODTYPE_FIELDS_DO(macro) \
3916 macro(_rtype_offset, k, "rtype", class_signature, false); \
3917 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3918
3919 void java_lang_invoke_MethodType::compute_offsets() {
3920 InstanceKlass* k = SystemDictionary::MethodType_klass();
3921 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3922 }
3923
3924 #if INCLUDE_CDS
3925 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3926 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3927 }
3928 #endif
3929
3930 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3931 st->print("(");
3932 objArrayOop pts = ptypes(mt);
3933 for (int i = 0, limit = pts->length(); i < limit; i++) {
3934 java_lang_Class::print_signature(pts->obj_at(i), st);
3935 }
3936 st->print(")");
3937 java_lang_Class::print_signature(rtype(mt), st);
3938 }
3939
3940 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3941 ResourceMark rm;
3942 stringStream buffer(128);
3943 print_signature(mt, &buffer);
3944 const char* sigstr = buffer.base();
3945 int siglen = (int) buffer.size();
3946 Symbol *name;
3947 if (!intern_if_not_found) {
3948 name = SymbolTable::probe(sigstr, siglen);
3949 } else {
3950 name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3951 }
3952 return name;
3953 }
3954
3955 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3956 if (oopDesc::equals(mt1, mt2))
3957 return true;
3958 if (!oopDesc::equals(rtype(mt1), rtype(mt2)))
3959 return false;
3960 if (ptype_count(mt1) != ptype_count(mt2))
3961 return false;
3962 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3963 if (!oopDesc::equals(ptype(mt1, i), ptype(mt2, i)))
3964 return false;
3965 }
3966 return true;
3967 }
3968
3969 oop java_lang_invoke_MethodType::rtype(oop mt) {
3970 assert(is_instance(mt), "must be a MethodType");
3971 return mt->obj_field(_rtype_offset);
3972 }
3973
3974 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3975 assert(is_instance(mt), "must be a MethodType");
3976 return (objArrayOop) mt->obj_field(_ptypes_offset);
3977 }
3978
3979 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3980 return ptypes(mt)->obj_at(idx);
3981 }
3982
3983 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3984 return ptypes(mt)->length();
3985 }
3986
3987 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3988 objArrayOop pts = ptypes(mt);
3989 int count = pts->length();
3990 int slots = 0;
3991 for (int i = 0; i < count; i++) {
3992 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3993 slots += type2size[bt];
3994 }
3995 return slots;
3996 }
3997
3998 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3999 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4000 return type2size[bt];
4001 }
4002
4003
4004 // Support for java_lang_invoke_CallSite
4005
4006 int java_lang_invoke_CallSite::_target_offset;
4007 int java_lang_invoke_CallSite::_context_offset;
4008
4009 #define CALLSITE_FIELDS_DO(macro) \
4010 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
4011 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
4012
4013 void java_lang_invoke_CallSite::compute_offsets() {
4014 InstanceKlass* k = SystemDictionary::CallSite_klass();
4015 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4016 }
4017
4018 #if INCLUDE_CDS
4019 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
4020 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4021 }
4022 #endif
4023
4024 oop java_lang_invoke_CallSite::context(oop call_site) {
4025 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
4026
4027 oop dep_oop = call_site->obj_field(_context_offset);
4028 return dep_oop;
4029 }
4030
4031 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
4032
4033 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
4034
4035 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
4036 InstanceKlass* k = SystemDictionary::Context_klass();
4037 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4038 }
4039
4040 #if INCLUDE_CDS
4041 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
4042 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4043 }
4044 #endif
4045
4046 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
4047 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
4048 intptr_t* vmdeps_addr = (intptr_t*)call_site->field_addr(_vmdependencies_offset);
4049 DependencyContext dep_ctx(vmdeps_addr);
4050 return dep_ctx;
4051 }
4052
4053 // Support for java_security_AccessControlContext
4054
4055 int java_security_AccessControlContext::_context_offset = 0;
4056 int java_security_AccessControlContext::_privilegedContext_offset = 0;
4057 int java_security_AccessControlContext::_isPrivileged_offset = 0;
4058 int java_security_AccessControlContext::_isAuthorized_offset = -1;
4059
4060 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4061 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4062 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4063 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4064 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4065
4066 void java_security_AccessControlContext::compute_offsets() {
4067 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4068 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
4069 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4070 }
4071
4072 #if INCLUDE_CDS
4073 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4074 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4075 }
4076 #endif
4077
4078 bool java_security_AccessControlContext::is_authorized(Handle context) {
4079 assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
4080 assert(_isAuthorized_offset != -1, "should be set");
4081 return context->bool_field(_isAuthorized_offset) != 0;
4082 }
4083
4084 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4085 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4086 // Ensure klass is initialized
4087 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
4088 // Allocate result
4089 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
4090 // Fill in values
4091 result->obj_field_put(_context_offset, context());
4092 result->obj_field_put(_privilegedContext_offset, privileged_context());
4093 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4094 // whitelist AccessControlContexts created by the JVM if present
4095 if (_isAuthorized_offset != -1) {
4096 result->bool_field_put(_isAuthorized_offset, true);
4097 }
4098 return result;
4099 }
4100
4101
4102 // Support for java_lang_ClassLoader
4103
4104 bool java_lang_ClassLoader::offsets_computed = false;
4105 int java_lang_ClassLoader::_loader_data_offset = -1;
4106 int java_lang_ClassLoader::parallelCapable_offset = -1;
4107 int java_lang_ClassLoader::name_offset = -1;
4108 int java_lang_ClassLoader::nameAndId_offset = -1;
4109 int java_lang_ClassLoader::unnamedModule_offset = -1;
4110
4111 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) {
4112 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4113 return HeapAccess<>::load_at(loader, _loader_data_offset);
4114 }
4115
4116 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
4117 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4118 return RawAccess<>::load_at(loader, _loader_data_offset);
4119 }
4120
4121 ClassLoaderData* java_lang_ClassLoader::cmpxchg_loader_data(ClassLoaderData* new_data, oop loader, ClassLoaderData* expected_data) {
4122 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4123 return HeapAccess<>::atomic_cmpxchg_at(new_data, loader, _loader_data_offset, expected_data);
4124 }
4125
4126 #define CLASSLOADER_FIELDS_DO(macro) \
4127 macro(parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4128 macro(name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4129 macro(nameAndId_offset, k1, "nameAndId", string_signature, false); \
4130 macro(unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4131 macro(parent_offset, k1, "parent", classloader_signature, false)
4132
4133 void java_lang_ClassLoader::compute_offsets() {
4134 assert(!offsets_computed, "offsets should be initialized only once");
4135 offsets_computed = true;
4136
4137 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4138 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4139
4140 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4141 }
4142
4143 #if INCLUDE_CDS
4144 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4145 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4146 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4147 }
4148 #endif
4149
4150 oop java_lang_ClassLoader::parent(oop loader) {
4151 assert(is_instance(loader), "loader must be oop");
4152 return loader->obj_field(parent_offset);
4153 }
4154
4155 // Returns the name field of this class loader. If the name field has not
4156 // been set, null will be returned.
4157 oop java_lang_ClassLoader::name(oop loader) {
4158 assert(is_instance(loader), "loader must be oop");
4159 return loader->obj_field(name_offset);
4160 }
4161
4162 // Returns the nameAndId field of this class loader. The format is
4163 // as follows:
4164 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4165 // If the defining loader has no name then <qualified-class-name> @<id>
4166 // If built-in loader, then omit '@<id>' as there is only one instance.
4167 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4168 oop java_lang_ClassLoader::nameAndId(oop loader) {
4169 assert(is_instance(loader), "loader must be oop");
4170 return loader->obj_field(nameAndId_offset);
4171 }
4172
4173 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4174 assert(is_instance(loader), "loader must be oop");
4175 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4176 oop acl = loader;
4177 debug_only(jint loop_count = 0);
4178 // This loop taken verbatim from ClassLoader.java:
4179 do {
4180 acl = parent(acl);
4181 if (oopDesc::equals(cl, acl)) {
4182 return true;
4183 }
4184 assert(++loop_count > 0, "loop_count overflow");
4185 } while (acl != NULL);
4186 return false;
4187 }
4188
4189 bool java_lang_ClassLoader::is_instance(oop obj) {
4190 return obj != NULL && is_subclass(obj->klass());
4191 }
4192
4193
4194 // For class loader classes, parallelCapable defined
4195 // based on non-null field
4196 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4197 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4198 if (parallelCapable_offset == -1) {
4199 // Default for backward compatibility is false
4200 return false;
4201 }
4202 return (class_loader->obj_field(parallelCapable_offset) != NULL);
4203 }
4204
4205 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4206 // Fix for 4474172; see evaluation for more details
4207 loader = non_reflection_class_loader(loader);
4208
4209 oop cl = SystemDictionary::java_system_loader();
4210 while(cl != NULL) {
4211 if (oopDesc::equals(cl, loader)) return true;
4212 cl = parent(cl);
4213 }
4214 return false;
4215 }
4216
4217 // Return true if this is one of the class loaders associated with
4218 // the generated bytecodes for reflection.
4219 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4220 if (loader != NULL) {
4221 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4222 // This might be null in non-1.4 JDKs
4223 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4224 }
4225 return false;
4226 }
4227
4228 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4229 // See whether this is one of the class loaders associated with
4230 // the generated bytecodes for reflection, and if so, "magically"
4231 // delegate to its parent to prevent class loading from occurring
4232 // in places where applications using reflection didn't expect it.
4233 if (is_reflection_class_loader(loader)) {
4234 return parent(loader);
4235 }
4236 return loader;
4237 }
4238
4239 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4240 assert(is_instance(loader), "loader must be oop");
4241 return loader->obj_field(unnamedModule_offset);
4242 }
4243
4244 // Support for java_lang_System
4245 //
4246 #define SYSTEM_FIELDS_DO(macro) \
4247 macro(static_in_offset, k, "in", input_stream_signature, true); \
4248 macro(static_out_offset, k, "out", print_stream_signature, true); \
4249 macro(static_err_offset, k, "err", print_stream_signature, true); \
4250 macro(static_security_offset, k, "security", security_manager_signature, true)
4251
4252 void java_lang_System::compute_offsets() {
4253 InstanceKlass* k = SystemDictionary::System_klass();
4254 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4255 }
4256
4257 #if INCLUDE_CDS
4258 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4259 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4260 }
4261 #endif
4262
4263 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4264 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4265 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4266
4267
4268 bool java_lang_System::has_security_manager() {
4269 InstanceKlass* ik = SystemDictionary::System_klass();
4270 oop base = ik->static_field_base_raw();
4271 return base->obj_field(static_security_offset) != NULL;
4272 }
4273
4274 int java_lang_Class::_klass_offset;
4275 int java_lang_Class::_array_klass_offset;
4276 int java_lang_Class::_oop_size_offset;
4277 int java_lang_Class::_static_oop_field_count_offset;
4278 int java_lang_Class::_class_loader_offset;
4279 int java_lang_Class::_module_offset;
4280 int java_lang_Class::_protection_domain_offset;
4281 int java_lang_Class::_component_mirror_offset;
4282 int java_lang_Class::_box_mirror_offset;
4283 int java_lang_Class::_value_mirror_offset;
4284 int java_lang_Class::_init_lock_offset;
4285 int java_lang_Class::_signers_offset;
4286 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4287 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4288 int java_lang_Throwable::backtrace_offset;
4289 int java_lang_Throwable::detailMessage_offset;
4290 int java_lang_Throwable::stackTrace_offset;
4291 int java_lang_Throwable::depth_offset;
4292 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4293 int java_lang_reflect_AccessibleObject::override_offset;
4294 int java_lang_reflect_Method::clazz_offset;
4295 int java_lang_reflect_Method::name_offset;
4296 int java_lang_reflect_Method::returnType_offset;
4297 int java_lang_reflect_Method::parameterTypes_offset;
4298 int java_lang_reflect_Method::exceptionTypes_offset;
4299 int java_lang_reflect_Method::slot_offset;
4300 int java_lang_reflect_Method::modifiers_offset;
4301 int java_lang_reflect_Method::signature_offset;
4302 int java_lang_reflect_Method::annotations_offset;
4303 int java_lang_reflect_Method::parameter_annotations_offset;
4304 int java_lang_reflect_Method::annotation_default_offset;
4305 int java_lang_reflect_Method::type_annotations_offset;
4306 int java_lang_reflect_Constructor::clazz_offset;
4307 int java_lang_reflect_Constructor::parameterTypes_offset;
4308 int java_lang_reflect_Constructor::exceptionTypes_offset;
4309 int java_lang_reflect_Constructor::slot_offset;
4310 int java_lang_reflect_Constructor::modifiers_offset;
4311 int java_lang_reflect_Constructor::signature_offset;
4312 int java_lang_reflect_Constructor::annotations_offset;
4313 int java_lang_reflect_Constructor::parameter_annotations_offset;
4314 int java_lang_reflect_Constructor::type_annotations_offset;
4315 int java_lang_reflect_Field::clazz_offset;
4316 int java_lang_reflect_Field::name_offset;
4317 int java_lang_reflect_Field::type_offset;
4318 int java_lang_reflect_Field::slot_offset;
4319 int java_lang_reflect_Field::modifiers_offset;
4320 int java_lang_reflect_Field::signature_offset;
4321 int java_lang_reflect_Field::annotations_offset;
4322 int java_lang_reflect_Field::type_annotations_offset;
4323 int java_lang_reflect_Parameter::name_offset;
4324 int java_lang_reflect_Parameter::modifiers_offset;
4325 int java_lang_reflect_Parameter::index_offset;
4326 int java_lang_reflect_Parameter::executable_offset;
4327 int java_lang_boxing_object::value_offset;
4328 int java_lang_boxing_object::long_value_offset;
4329 int java_lang_ref_Reference::referent_offset;
4330 int java_lang_ref_Reference::queue_offset;
4331 int java_lang_ref_Reference::next_offset;
4332 int java_lang_ref_Reference::discovered_offset;
4333 int java_lang_ref_SoftReference::timestamp_offset;
4334 int java_lang_ref_SoftReference::static_clock_offset;
4335 int java_lang_ClassLoader::parent_offset;
4336 int java_lang_System::static_in_offset;
4337 int java_lang_System::static_out_offset;
4338 int java_lang_System::static_err_offset;
4339 int java_lang_System::static_security_offset;
4340 int java_lang_StackTraceElement::methodName_offset;
4341 int java_lang_StackTraceElement::fileName_offset;
4342 int java_lang_StackTraceElement::lineNumber_offset;
4343 int java_lang_StackTraceElement::moduleName_offset;
4344 int java_lang_StackTraceElement::moduleVersion_offset;
4345 int java_lang_StackTraceElement::classLoaderName_offset;
4346 int java_lang_StackTraceElement::declaringClass_offset;
4347 int java_lang_StackTraceElement::declaringClassObject_offset;
4348 int java_lang_StackFrameInfo::_memberName_offset;
4349 int java_lang_StackFrameInfo::_bci_offset;
4350 int java_lang_StackFrameInfo::_version_offset;
4351 int java_lang_LiveStackFrameInfo::_monitors_offset;
4352 int java_lang_LiveStackFrameInfo::_locals_offset;
4353 int java_lang_LiveStackFrameInfo::_operands_offset;
4354 int java_lang_LiveStackFrameInfo::_mode_offset;
4355 int java_lang_AssertionStatusDirectives::classes_offset;
4356 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4357 int java_lang_AssertionStatusDirectives::packages_offset;
4358 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4359 int java_lang_AssertionStatusDirectives::deflt_offset;
4360 int java_nio_Buffer::_limit_offset;
4361 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4362 int reflect_ConstantPool::_oop_offset;
4363 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4364
4365
4366 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4367 macro(declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4368 macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4369 macro(moduleName_offset, k, "moduleName", string_signature, false); \
4370 macro(moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4371 macro(declaringClass_offset, k, "declaringClass", string_signature, false); \
4372 macro(methodName_offset, k, "methodName", string_signature, false); \
4373 macro(fileName_offset, k, "fileName", string_signature, false); \
4374 macro(lineNumber_offset, k, "lineNumber", int_signature, false)
4375
4376 // Support for java_lang_StackTraceElement
4377 void java_lang_StackTraceElement::compute_offsets() {
4378 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4379 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4380 }
4381
4382 #if INCLUDE_CDS
4383 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4384 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4385 }
4386 #endif
4387
4388 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4389 element->obj_field_put(fileName_offset, value);
4390 }
4391
4392 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4393 element->obj_field_put(declaringClass_offset, value);
4394 }
4395
4396 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4397 element->obj_field_put(methodName_offset, value);
4398 }
4399
4400 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4401 element->int_field_put(lineNumber_offset, value);
4402 }
4403
4404 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4405 element->obj_field_put(moduleName_offset, value);
4406 }
4407
4408 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4409 element->obj_field_put(moduleVersion_offset, value);
4410 }
4411
4412 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4413 element->obj_field_put(classLoaderName_offset, value);
4414 }
4415
4416 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4417 element->obj_field_put(declaringClassObject_offset, value);
4418 }
4419
4420 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4421 element->short_field_put(_version_offset, value);
4422 }
4423
4424 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4425 element->int_field_put(_bci_offset, value);
4426 }
4427
4428 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4429 element->obj_field_put(_monitors_offset, value);
4430 }
4431
4432 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4433 element->obj_field_put(_locals_offset, value);
4434 }
4435
4436 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4437 element->obj_field_put(_operands_offset, value);
4438 }
4439
4440 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4441 element->int_field_put(_mode_offset, value);
4442 }
4443
4444 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4445 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4446 macro(classes_offset, k, "classes", string_array_signature, false); \
4447 macro(classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4448 macro(packages_offset, k, "packages", string_array_signature, false); \
4449 macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4450 macro(deflt_offset, k, "deflt", bool_signature, false)
4451
4452 void java_lang_AssertionStatusDirectives::compute_offsets() {
4453 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4454 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4455 }
4456
4457 #if INCLUDE_CDS
4458 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4459 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4460 }
4461 #endif
4462
4463 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4464 o->obj_field_put(classes_offset, val);
4465 }
4466
4467 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4468 o->obj_field_put(classEnabled_offset, val);
4469 }
4470
4471 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4472 o->obj_field_put(packages_offset, val);
4473 }
4474
4475 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4476 o->obj_field_put(packageEnabled_offset, val);
4477 }
4478
4479 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4480 o->bool_field_put(deflt_offset, val);
4481 }
4482
4483
4484 // Support for intrinsification of java.nio.Buffer.checkIndex
4485 int java_nio_Buffer::limit_offset() {
4486 return _limit_offset;
4487 }
4488
4489 #define BUFFER_FIELDS_DO(macro) \
4490 macro(_limit_offset, k, "limit", int_signature, false)
4491
4492 void java_nio_Buffer::compute_offsets() {
4493 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4494 assert(k != NULL, "must be loaded in 1.4+");
4495 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4496 }
4497
4498 #if INCLUDE_CDS
4499 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4500 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4501 }
4502 #endif
4503
4504 #define AOS_FIELDS_DO(macro) \
4505 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4506
4507 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4508 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4509 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4510 }
4511
4512 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4513 assert(_owner_offset != 0, "Must be initialized");
4514 return obj->obj_field(_owner_offset);
4515 }
4516
4517 #if INCLUDE_CDS
4518 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4519 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4520 }
4521 #endif
4522
4523 static int member_offset(int hardcoded_offset) {
4524 return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4525 }
4526
4527 // Compute hard-coded offsets
4528 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4529 // are not available to determine the offset_of_static_fields.
4530 void JavaClasses::compute_hard_coded_offsets() {
4531
4532 // java_lang_boxing_object
4533 java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
4534 java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4535
4536 // java_lang_ref_Reference
4537 java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
4538 java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
4539 java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
4540 java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4541 }
4542
4543 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4544
4545 // Compute non-hard-coded field offsets of all the classes in this file
4546 void JavaClasses::compute_offsets() {
4547 if (UseSharedSpaces) {
4548 return; // field offsets are loaded from archive
4549 }
4550
4551 // We have already called the compute_offsets() of the
4552 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String and java_lang_Class)
4553 // earlier inside SystemDictionary::resolve_preloaded_classes()
4554 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4555
4556 // generated interpreter code wants to know about the offsets we just computed:
4557 AbstractAssembler::update_delayed_values();
4558 }
4559
4560 #if INCLUDE_CDS
4561 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4562
4563 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4564 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4565 }
4566 #endif
4567
4568
4569 #ifndef PRODUCT
4570
4571 // These functions exist to assert the validity of hard-coded field offsets to guard
4572 // against changes in the class files
4573
4574 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4575 EXCEPTION_MARK;
4576 fieldDescriptor fd;
4577 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
4578 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4579 InstanceKlass* ik = InstanceKlass::cast(k);
4580 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
4581 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH);
4582 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4583 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4584 return false;
4585 }
4586 if (fd.is_static()) {
4587 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4588 return false;
4589 }
4590 if (fd.offset() == hardcoded_offset ) {
4591 return true;
4592 } else {
4593 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4594 klass_name, field_name, hardcoded_offset, fd.offset());
4595 return false;
4596 }
4597 }
4598
4599 // Check the hard-coded field offsets of all the classes in this file
4600
4601 void JavaClasses::check_offsets() {
4602 bool valid = true;
4603
4604 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4605 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4606
4607 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4608 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4609
4610 // Boxed primitive objects (java_lang_boxing_object)
4611
4612 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4613 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4614 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4615 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4616 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4617 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4618 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4619 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4620
4621 // java.lang.ref.Reference
4622
4623 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4624 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4625 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4626 // Fake field
4627 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4628
4629 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4630 }
4631
4632 #endif // PRODUCT
4633
4634 int InjectedField::compute_offset() {
4635 InstanceKlass* ik = InstanceKlass::cast(klass());
4636 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4637 if (!may_be_java && !fs.access_flags().is_internal()) {
4638 // Only look at injected fields
4639 continue;
4640 }
4641 if (fs.name() == name() && fs.signature() == signature()) {
4642 return fs.offset();
4643 }
4644 }
4645 ResourceMark rm;
4646 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)" : "");
4647 #ifndef PRODUCT
4648 ik->print();
4649 tty->print_cr("all fields:");
4650 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4651 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4652 }
4653 #endif //PRODUCT
4654 vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
4655 return -1;
4656 }
4657
4658 void javaClasses_init() {
4659 JavaClasses::compute_offsets();
4660 JavaClasses::check_offsets();
4661 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4662 }