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