1 /*
2 * Copyright (c) 1997, 2020, 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/symbolTable.hpp"
32 #include "classfile/vmSymbols.hpp"
33 #include "code/debugInfo.hpp"
34 #include "code/dependencyContext.hpp"
35 #include "code/pcDesc.hpp"
36 #include "interpreter/interpreter.hpp"
37 #include "interpreter/linkResolver.hpp"
38 #include "logging/log.hpp"
39 #include "logging/logStream.hpp"
40 #include "memory/heapShared.inline.hpp"
41 #include "memory/metaspaceShared.hpp"
42 #include "memory/oopFactory.hpp"
43 #include "memory/resourceArea.hpp"
44 #include "memory/universe.hpp"
45 #include "oops/fieldStreams.inline.hpp"
46 #include "oops/instanceKlass.hpp"
47 #include "oops/instanceMirrorKlass.hpp"
48 #include "oops/klass.hpp"
49 #include "oops/method.inline.hpp"
50 #include "oops/objArrayOop.inline.hpp"
51 #include "oops/oop.inline.hpp"
52 #include "oops/symbol.hpp"
53 #include "oops/recordComponent.hpp"
54 #include "oops/typeArrayOop.inline.hpp"
55 #include "prims/jvmtiExport.hpp"
56 #include "prims/resolvedMethodTable.hpp"
57 #include "runtime/fieldDescriptor.inline.hpp"
58 #include "runtime/frame.inline.hpp"
59 #include "runtime/handles.inline.hpp"
60 #include "runtime/init.hpp"
61 #include "runtime/interfaceSupport.inline.hpp"
62 #include "runtime/java.hpp"
63 #include "runtime/javaCalls.hpp"
64 #include "runtime/jniHandles.inline.hpp"
65 #include "runtime/safepoint.hpp"
66 #include "runtime/safepointVerifiers.hpp"
67 #include "runtime/thread.inline.hpp"
68 #include "runtime/vframe.inline.hpp"
69 #include "runtime/vm_version.hpp"
70 #include "utilities/align.hpp"
71 #include "utilities/preserveException.hpp"
72 #include "utilities/utf8.hpp"
73 #if INCLUDE_JVMCI
74 #include "jvmci/jvmciJavaClasses.hpp"
75 #endif
76
77 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
78 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
79
80 #if INCLUDE_CDS
81 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
82 f->do_u4((u4*)&_##name##_offset);
83 #endif
84
85 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
86 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
87
88 InjectedField JavaClasses::_injected_fields[] = {
89 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
90 };
91
92 // Register native methods of Object
93 void java_lang_Object::register_natives(TRAPS) {
94 InstanceKlass* obj = SystemDictionary::Object_klass();
95 Method::register_native(obj, vmSymbols::hashCode_name(),
96 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
97 Method::register_native(obj, vmSymbols::wait_name(),
98 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
99 Method::register_native(obj, vmSymbols::notify_name(),
100 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
101 Method::register_native(obj, vmSymbols::notifyAll_name(),
102 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
103 Method::register_native(obj, vmSymbols::clone_name(),
104 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
105 }
106
107 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
108 return _injected_fields[id].compute_offset();
109 }
110
111 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
112 *field_count = 0;
113
114 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
115 if (sid == vmSymbols::NO_SID) {
116 // Only well known classes can inject fields
117 return NULL;
118 }
119
120 int count = 0;
121 int start = -1;
122
123 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
124 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
125 count++; \
126 if (start == -1) start = klass##_##name##_enum; \
127 }
128 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
129 #undef LOOKUP_INJECTED_FIELD
130
131 if (start != -1) {
132 *field_count = count;
133 return _injected_fields + start;
134 }
135 return NULL;
136 }
137
138
139 // Helpful routine for computing field offsets at run time rather than hardcoding them
140 // Finds local fields only, including static fields. Static field offsets are from the
141 // beginning of the mirror.
142 static void compute_offset(int &dest_offset,
143 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
144 bool is_static = false) {
145 fieldDescriptor fd;
146 if (ik == NULL) {
147 ResourceMark rm;
148 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
149 vm_exit_during_initialization("Invalid layout of well-known class");
150 }
151
152 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
153 ResourceMark rm;
154 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
155 name_symbol->as_C_string(), signature_symbol->as_C_string());
156 #ifndef PRODUCT
157 // Prints all fields and offsets
158 Log(class) lt;
159 LogStream ls(lt.error());
160 ik->print_on(&ls);
161 #endif //PRODUCT
162 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
163 }
164 dest_offset = fd.offset();
165 }
166
167 // Overloading to pass name as a string.
168 static void compute_offset(int& dest_offset, InstanceKlass* ik,
169 const char* name_string, Symbol* signature_symbol,
170 bool is_static = false) {
171 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
172 if (name == NULL) {
173 ResourceMark rm;
174 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
175 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
176 }
177 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
178 }
179
180 int java_lang_String::value_offset = 0;
181 int java_lang_String::hash_offset = 0;
182 int java_lang_String::hashIsZero_offset = 0;
183 int java_lang_String::coder_offset = 0;
184
185 bool java_lang_String::initialized = false;
186
187 bool java_lang_String::is_instance(oop obj) {
188 return is_instance_inlined(obj);
189 }
190
191 #if INCLUDE_CDS
192 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
193 f->do_u4((u4*)&offset)
194 #endif
195
196 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
197 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
198
199 #define STRING_FIELDS_DO(macro) \
200 macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
201 macro(hash_offset, k, "hash", int_signature, false); \
202 macro(hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
203 macro(coder_offset, k, "coder", byte_signature, false);
204
205 void java_lang_String::compute_offsets() {
206 if (initialized) {
207 return;
208 }
209
210 InstanceKlass* k = SystemDictionary::String_klass();
211 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
212
213 initialized = true;
214 }
215
216 #if INCLUDE_CDS
217 void java_lang_String::serialize_offsets(SerializeClosure* f) {
218 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
219 f->do_bool(&initialized);
220 }
221 #endif
222
223 class CompactStringsFixup : public FieldClosure {
224 private:
225 bool _value;
226
227 public:
228 CompactStringsFixup(bool value) : _value(value) {}
229
230 void do_field(fieldDescriptor* fd) {
231 if (fd->name() == vmSymbols::compact_strings_name()) {
232 oop mirror = fd->field_holder()->java_mirror();
233 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
234 assert(mirror != NULL, "String must have mirror already");
235 mirror->bool_field_put(fd->offset(), _value);
236 }
237 }
238 };
239
240 void java_lang_String::set_compact_strings(bool value) {
241 CompactStringsFixup fix(value);
242 SystemDictionary::String_klass()->do_local_static_fields(&fix);
243 }
244
245 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
246 assert(initialized, "Must be initialized");
247 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
248
249 // Create the String object first, so there's a chance that the String
250 // and the char array it points to end up in the same cache line.
251 oop obj;
252 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
253
254 // Create the char array. The String object must be handlized here
255 // because GC can happen as a result of the allocation attempt.
256 Handle h_obj(THREAD, obj);
257 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
258 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
259
260 // Point the String at the char array
261 obj = h_obj();
262 set_value(obj, buffer);
263 // No need to zero the offset, allocation zero'ed the entire String object
264 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
265 return h_obj;
266 }
267
268 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
269 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
270 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
271 typeArrayOop buffer = value(h_obj());
272 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
273 if (is_latin1) {
274 for (int index = 0; index < length; index++) {
275 buffer->byte_at_put(index, (jbyte)unicode[index]);
276 }
277 } else {
278 for (int index = 0; index < length; index++) {
279 buffer->char_at_put(index, unicode[index]);
280 }
281 }
282
283 #ifdef ASSERT
284 {
285 ResourceMark rm;
286 char* expected = UNICODE::as_utf8(unicode, length);
287 char* actual = as_utf8_string(h_obj());
288 if (strcmp(expected, actual) != 0) {
289 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
290 ShouldNotReachHere();
291 }
292 }
293 #endif
294
295 return h_obj;
296 }
297
298 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
299 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL);
300 return h_obj();
301 }
302
303 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
304 if (utf8_str == NULL) {
305 return Handle();
306 }
307 bool has_multibyte, is_latin1;
308 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
309 if (!CompactStrings) {
310 has_multibyte = true;
311 is_latin1 = false;
312 }
313
314 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
315 if (length > 0) {
316 if (!has_multibyte) {
317 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
318 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
319 } else if (is_latin1) {
320 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
321 } else {
322 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
323 }
324 }
325
326 #ifdef ASSERT
327 // This check is too strict because the input string is not necessarily valid UTF8.
328 // For example, it may be created with arbitrary content via jni_NewStringUTF.
329 /*
330 {
331 ResourceMark rm;
332 const char* expected = utf8_str;
333 char* actual = as_utf8_string(h_obj());
334 if (strcmp(expected, actual) != 0) {
335 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
336 ShouldNotReachHere();
337 }
338 }
339 */
340 #endif
341
342 return h_obj;
343 }
344
345 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
346 Handle h_obj = create_from_str(utf8_str, CHECK_NULL);
347 return h_obj();
348 }
349
350 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
351 const char* utf8_str = (char*)symbol->bytes();
352 int utf8_len = symbol->utf8_length();
353
354 bool has_multibyte, is_latin1;
355 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
356 if (!CompactStrings) {
357 has_multibyte = true;
358 is_latin1 = false;
359 }
360
361 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
362 if (length > 0) {
363 if (!has_multibyte) {
364 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
365 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
366 } else if (is_latin1) {
367 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
368 } else {
369 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
370 }
371 }
372
373 #ifdef ASSERT
374 {
375 ResourceMark rm;
376 const char* expected = symbol->as_utf8();
377 char* actual = as_utf8_string(h_obj());
378 if (strncmp(expected, actual, utf8_len) != 0) {
379 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
380 ShouldNotReachHere();
381 }
382 }
383 #endif
384
385 return h_obj;
386 }
387
388 // Converts a C string to a Java String based on current encoding
389 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
390 assert(str != NULL, "bad arguments");
391
392 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
393 static to_java_string_fn_t _to_java_string_fn = NULL;
394
395 if (_to_java_string_fn == NULL) {
396 void *lib_handle = os::native_java_library();
397 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
398 #if defined(_WIN32) && !defined(_WIN64)
399 if (_to_java_string_fn == NULL) {
400 // On 32 bit Windows, also try __stdcall decorated name
401 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
402 }
403 #endif
404 if (_to_java_string_fn == NULL) {
405 fatal("JNU_NewStringPlatform missing");
406 }
407 }
408
409 jstring js = NULL;
410 {
411 assert(THREAD->is_Java_thread(), "must be java thread");
412 JavaThread* thread = (JavaThread*)THREAD;
413 HandleMark hm(thread);
414 ThreadToNativeFromVM ttn(thread);
415 js = (_to_java_string_fn)(thread->jni_environment(), str);
416 }
417
418 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
419 JNIHandles::destroy_local(js); // destroy local JNIHandle.
420 return native_platform_string;
421 }
422
423 // Converts a Java String to a native C string that can be used for
424 // native OS calls.
425 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
426 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
427 static to_platform_string_fn_t _to_platform_string_fn = NULL;
428
429 if (_to_platform_string_fn == NULL) {
430 void *lib_handle = os::native_java_library();
431 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
432 if (_to_platform_string_fn == NULL) {
433 fatal("GetStringPlatformChars missing");
434 }
435 }
436
437 char *native_platform_string;
438 { JavaThread* thread = (JavaThread*)THREAD;
439 assert(thread->is_Java_thread(), "must be java thread");
440 JNIEnv *env = thread->jni_environment();
441 jstring js = (jstring) JNIHandles::make_local(env, java_string());
442 bool is_copy;
443 HandleMark hm(thread);
444 ThreadToNativeFromVM ttn(thread);
445 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
446 assert(is_copy == JNI_TRUE, "is_copy value changed");
447 JNIHandles::destroy_local(js);
448 }
449 return native_platform_string;
450 }
451
452 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
453 oop obj = java_string();
454 // Typical usage is to convert all '/' to '.' in string.
455 typeArrayOop value = java_lang_String::value(obj);
456 int length = java_lang_String::length(obj, value);
457 bool is_latin1 = java_lang_String::is_latin1(obj);
458
459 // First check if any from_char exist
460 int index; // Declared outside, used later
461 for (index = 0; index < length; index++) {
462 jchar c = !is_latin1 ? value->char_at(index) :
463 ((jchar) value->byte_at(index)) & 0xff;
464 if (c == from_char) {
465 break;
466 }
467 }
468 if (index == length) {
469 // No from_char, so do not copy.
470 return java_string;
471 }
472
473 // Check if result string will be latin1
474 bool to_is_latin1 = false;
475
476 // Replacement char must be latin1
477 if (CompactStrings && UNICODE::is_latin1(to_char)) {
478 if (is_latin1) {
479 // Source string is latin1 as well
480 to_is_latin1 = true;
481 } else if (!UNICODE::is_latin1(from_char)) {
482 // We are replacing an UTF16 char. Scan string to
483 // check if result can be latin1 encoded.
484 to_is_latin1 = true;
485 for (index = 0; index < length; index++) {
486 jchar c = value->char_at(index);
487 if (c != from_char && !UNICODE::is_latin1(c)) {
488 to_is_latin1 = false;
489 break;
490 }
491 }
492 }
493 }
494
495 // Create new UNICODE (or byte) buffer. Must handlize value because GC
496 // may happen during String and char array creation.
497 typeArrayHandle h_value(THREAD, value);
498 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
499 typeArrayOop from_buffer = h_value();
500 typeArrayOop to_buffer = java_lang_String::value(string());
501
502 // Copy contents
503 for (index = 0; index < length; index++) {
504 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
505 ((jchar) from_buffer->byte_at(index)) & 0xff;
506 if (c == from_char) {
507 c = to_char;
508 }
509 if (!to_is_latin1) {
510 to_buffer->char_at_put(index, c);
511 } else {
512 to_buffer->byte_at_put(index, (jbyte) c);
513 }
514 }
515 return string;
516 }
517
518 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
519 typeArrayOop value = java_lang_String::value(java_string);
520 length = java_lang_String::length(java_string, value);
521 bool is_latin1 = java_lang_String::is_latin1(java_string);
522
523 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
524 if (result != NULL) {
525 if (!is_latin1) {
526 for (int index = 0; index < length; index++) {
527 result[index] = value->char_at(index);
528 }
529 } else {
530 for (int index = 0; index < length; index++) {
531 result[index] = ((jchar) value->byte_at(index)) & 0xff;
532 }
533 }
534 } else {
535 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
536 }
537 return result;
538 }
539
540 unsigned int java_lang_String::hash_code(oop java_string) {
541 // The hash and hashIsZero fields are subject to a benign data race,
542 // making it crucial to ensure that any observable result of the
543 // calculation in this method stays correct under any possible read of
544 // these fields. Necessary restrictions to allow this to be correct
545 // without explicit memory fences or similar concurrency primitives is
546 // that we can ever only write to one of these two fields for a given
547 // String instance, and that the computation is idempotent and derived
548 // from immutable state
549 assert(initialized && (hash_offset > 0) && (hashIsZero_offset > 0), "Must be initialized");
550 if (java_lang_String::hash_is_set(java_string)) {
551 return java_string->int_field(hash_offset);
552 }
553
554 typeArrayOop value = java_lang_String::value(java_string);
555 int length = java_lang_String::length(java_string, value);
556 bool is_latin1 = java_lang_String::is_latin1(java_string);
557
558 unsigned int hash = 0;
559 if (length > 0) {
560 if (is_latin1) {
561 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
562 } else {
563 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
564 }
565 }
566
567 if (hash != 0) {
568 java_string->int_field_put(hash_offset, hash);
569 } else {
570 java_string->bool_field_put(hashIsZero_offset, true);
571 }
572 return hash;
573 }
574
575 char* java_lang_String::as_quoted_ascii(oop java_string) {
576 typeArrayOop value = java_lang_String::value(java_string);
577 int length = java_lang_String::length(java_string, value);
578 bool is_latin1 = java_lang_String::is_latin1(java_string);
579
580 if (length == 0) return NULL;
581
582 char* result;
583 int result_length;
584 if (!is_latin1) {
585 jchar* base = value->char_at_addr(0);
586 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
587 result = NEW_RESOURCE_ARRAY(char, result_length);
588 UNICODE::as_quoted_ascii(base, length, result, result_length);
589 } else {
590 jbyte* base = value->byte_at_addr(0);
591 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
592 result = NEW_RESOURCE_ARRAY(char, result_length);
593 UNICODE::as_quoted_ascii(base, length, result, result_length);
594 }
595 assert(result_length >= length + 1, "must not be shorter");
596 assert(result_length == (int)strlen(result) + 1, "must match");
597 return result;
598 }
599
600 Symbol* java_lang_String::as_symbol(oop java_string) {
601 typeArrayOop value = java_lang_String::value(java_string);
602 int length = java_lang_String::length(java_string, value);
603 bool is_latin1 = java_lang_String::is_latin1(java_string);
604 if (!is_latin1) {
605 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
606 Symbol* sym = SymbolTable::new_symbol(base, length);
607 return sym;
608 } else {
609 ResourceMark rm;
610 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
611 const char* base = UNICODE::as_utf8(position, length);
612 Symbol* sym = SymbolTable::new_symbol(base, length);
613 return sym;
614 }
615 }
616
617 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
618 typeArrayOop value = java_lang_String::value(java_string);
619 int length = java_lang_String::length(java_string, value);
620 bool is_latin1 = java_lang_String::is_latin1(java_string);
621 if (!is_latin1) {
622 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
623 return SymbolTable::probe_unicode(base, length);
624 } else {
625 ResourceMark rm;
626 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
627 const char* base = UNICODE::as_utf8(position, length);
628 return SymbolTable::probe(base, length);
629 }
630 }
631
632 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
633 assert(value_equals(value, java_lang_String::value(java_string)),
634 "value must be same as java_lang_String::value(java_string)");
635 int length = java_lang_String::length(java_string, value);
636 if (length == 0) {
637 return 0;
638 }
639 if (!java_lang_String::is_latin1(java_string)) {
640 return UNICODE::utf8_length(value->char_at_addr(0), length);
641 } else {
642 return UNICODE::utf8_length(value->byte_at_addr(0), length);
643 }
644 }
645
646 int java_lang_String::utf8_length(oop java_string) {
647 typeArrayOop value = java_lang_String::value(java_string);
648 return utf8_length(java_string, value);
649 }
650
651 char* java_lang_String::as_utf8_string(oop java_string) {
652 typeArrayOop value = java_lang_String::value(java_string);
653 int length = java_lang_String::length(java_string, value);
654 bool is_latin1 = java_lang_String::is_latin1(java_string);
655 if (!is_latin1) {
656 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
657 return UNICODE::as_utf8(position, length);
658 } else {
659 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
660 return UNICODE::as_utf8(position, length);
661 }
662 }
663
664 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
665 assert(value_equals(value, java_lang_String::value(java_string)),
666 "value must be same as java_lang_String::value(java_string)");
667 int length = java_lang_String::length(java_string, value);
668 bool is_latin1 = java_lang_String::is_latin1(java_string);
669 if (!is_latin1) {
670 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
671 return UNICODE::as_utf8(position, length, buf, buflen);
672 } else {
673 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
674 return UNICODE::as_utf8(position, length, buf, buflen);
675 }
676 }
677
678 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
679 typeArrayOop value = java_lang_String::value(java_string);
680 return as_utf8_string(java_string, value, buf, buflen);
681 }
682
683 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
684 typeArrayOop value = java_lang_String::value(java_string);
685 bool is_latin1 = java_lang_String::is_latin1(java_string);
686 assert(start + len <= java_lang_String::length(java_string), "just checking");
687 if (!is_latin1) {
688 jchar* position = value->char_at_addr(start);
689 return UNICODE::as_utf8(position, len);
690 } else {
691 jbyte* position = value->byte_at_addr(start);
692 return UNICODE::as_utf8(position, len);
693 }
694 }
695
696 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
697 assert(value_equals(value, java_lang_String::value(java_string)),
698 "value must be same as java_lang_String::value(java_string)");
699 assert(start + len <= java_lang_String::length(java_string), "just checking");
700 bool is_latin1 = java_lang_String::is_latin1(java_string);
701 if (!is_latin1) {
702 jchar* position = value->char_at_addr(start);
703 return UNICODE::as_utf8(position, len, buf, buflen);
704 } else {
705 jbyte* position = value->byte_at_addr(start);
706 return UNICODE::as_utf8(position, len, buf, buflen);
707 }
708 }
709
710 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
711 assert(java_string->klass() == SystemDictionary::String_klass(),
712 "must be java_string");
713 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
714 int length = java_lang_String::length(java_string, value);
715 if (length != len) {
716 return false;
717 }
718 bool is_latin1 = java_lang_String::is_latin1(java_string);
719 if (!is_latin1) {
720 for (int i = 0; i < len; i++) {
721 if (value->char_at(i) != chars[i]) {
722 return false;
723 }
724 }
725 } else {
726 for (int i = 0; i < len; i++) {
727 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
728 return false;
729 }
730 }
731 }
732 return true;
733 }
734
735 bool java_lang_String::equals(oop str1, oop str2) {
736 assert(str1->klass() == SystemDictionary::String_klass(),
737 "must be java String");
738 assert(str2->klass() == SystemDictionary::String_klass(),
739 "must be java String");
740 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
741 bool is_latin1 = java_lang_String::is_latin1(str1);
742 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
743 bool is_latin2 = java_lang_String::is_latin1(str2);
744
745 if (is_latin1 != is_latin2) {
746 // Strings with different coders are never equal.
747 return false;
748 }
749 return value_equals(value1, value2);
750 }
751
752 void java_lang_String::print(oop java_string, outputStream* st) {
753 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
754 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
755
756 if (value == NULL) {
757 // This can happen if, e.g., printing a String
758 // object before its initializer has been called
759 st->print("NULL");
760 return;
761 }
762
763 int length = java_lang_String::length(java_string, value);
764 bool is_latin1 = java_lang_String::is_latin1(java_string);
765
766 st->print("\"");
767 for (int index = 0; index < length; index++) {
768 st->print("%c", (!is_latin1) ? value->char_at(index) :
769 ((jchar) value->byte_at(index)) & 0xff );
770 }
771 st->print("\"");
772 }
773
774
775 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
776 assert(mirror.not_null() && fd->is_static(), "just checking");
777 if (fd->has_initial_value()) {
778 BasicType t = fd->field_type();
779 switch (t) {
780 case T_BYTE:
781 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
782 break;
783 case T_BOOLEAN:
784 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
785 break;
786 case T_CHAR:
787 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
788 break;
789 case T_SHORT:
790 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
791 break;
792 case T_INT:
793 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
794 break;
795 case T_FLOAT:
796 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
797 break;
798 case T_DOUBLE:
799 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
800 break;
801 case T_LONG:
802 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
803 break;
804 case T_OBJECT:
805 {
806 assert(fd->signature() == vmSymbols::string_signature(),
807 "just checking");
808 if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
809 // Archive the String field and update the pointer.
810 oop s = mirror()->obj_field(fd->offset());
811 oop archived_s = StringTable::create_archived_string(s, CHECK);
812 mirror()->obj_field_put(fd->offset(), archived_s);
813 } else {
814 oop string = fd->string_initial_value(CHECK);
815 mirror()->obj_field_put(fd->offset(), string);
816 }
817 }
818 break;
819 default:
820 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
821 "Illegal ConstantValue attribute in class file");
822 }
823 }
824 }
825
826
827 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
828 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
829
830 // If the offset was read from the shared archive, it was fixed up already
831 if (!k->is_shared()) {
832 if (k->is_instance_klass()) {
833 // During bootstrap, java.lang.Class wasn't loaded so static field
834 // offsets were computed without the size added it. Go back and
835 // update all the static field offsets to included the size.
836 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
837 if (fs.access_flags().is_static()) {
838 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
839 fs.set_offset(real_offset);
840 }
841 }
842 }
843 }
844
845 if (k->is_shared() && k->has_raw_archived_mirror()) {
846 if (HeapShared::open_archive_heap_region_mapped()) {
847 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
848 assert(present, "Missing archived mirror for %s", k->external_name());
849 return;
850 } else {
851 k->set_java_mirror_handle(NULL);
852 k->clear_has_raw_archived_mirror();
853 }
854 }
855 create_mirror(k, Handle(), Handle(), Handle(), CHECK);
856 }
857
858 void java_lang_Class::initialize_mirror_fields(Klass* k,
859 Handle mirror,
860 Handle protection_domain,
861 TRAPS) {
862 // Allocate a simple java object for a lock.
863 // This needs to be a java object because during class initialization
864 // it can be held across a java call.
865 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
866 set_init_lock(mirror(), r);
867
868 // Set protection domain also
869 set_protection_domain(mirror(), protection_domain());
870
871 // Initialize static fields
872 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
873 }
874
875 // Set the java.lang.Module module field in the java_lang_Class mirror
876 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
877 if (module.is_null()) {
878 // During startup, the module may be NULL only if java.base has not been defined yet.
879 // Put the class on the fixup_module_list to patch later when the java.lang.Module
880 // for java.base is known. But note that since we captured the NULL module another
881 // thread may have completed that initialization.
882
883 bool javabase_was_defined = false;
884 {
885 MutexLocker m1(THREAD, Module_lock);
886 // Keep list of classes needing java.base module fixup
887 if (!ModuleEntryTable::javabase_defined()) {
888 assert(k->java_mirror() != NULL, "Class's mirror is null");
889 k->class_loader_data()->inc_keep_alive();
890 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
891 fixup_module_field_list()->push(k);
892 } else {
893 javabase_was_defined = true;
894 }
895 }
896
897 // If java.base was already defined then patch this particular class with java.base.
898 if (javabase_was_defined) {
899 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
900 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
901 "Setting class module field, " JAVA_BASE_NAME " should be defined");
902 Handle javabase_handle(THREAD, javabase_entry->module());
903 set_module(mirror(), javabase_handle());
904 }
905 } else {
906 assert(Universe::is_module_initialized() ||
907 (ModuleEntryTable::javabase_defined() &&
908 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
909 "Incorrect java.lang.Module specification while creating mirror");
910 set_module(mirror(), module());
911 }
912 }
913
914 // Statically allocate fixup lists because they always get created.
915 void java_lang_Class::allocate_fixup_lists() {
916 GrowableArray<Klass*>* mirror_list =
917 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
918 set_fixup_mirror_list(mirror_list);
919
920 GrowableArray<Klass*>* module_list =
921 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
922 set_fixup_module_field_list(module_list);
923 }
924
925 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
926 Handle module, Handle protection_domain, TRAPS) {
927 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
928 assert(k->java_mirror() == NULL, "should only assign mirror once");
929
930 // Use this moment of initialization to cache modifier_flags also,
931 // to support Class.getModifiers(). Instance classes recalculate
932 // the cached flags after the class file is parsed, but before the
933 // class is put into the system dictionary.
934 int computed_modifiers = k->compute_modifier_flags(CHECK);
935 k->set_modifier_flags(computed_modifiers);
936 // Class_klass has to be loaded because it is used to allocate
937 // the mirror.
938 if (SystemDictionary::Class_klass_loaded()) {
939 // Allocate mirror (java.lang.Class instance)
940 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
941 Handle mirror(THREAD, mirror_oop);
942 Handle comp_mirror;
943
944 // Setup indirection from mirror->klass
945 java_lang_Class::set_klass(mirror(), k);
946
947 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
948 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
949
950 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
951
952 // It might also have a component mirror. This mirror must already exist.
953 if (k->is_array_klass()) {
954 if (k->is_typeArray_klass()) {
955 BasicType type = TypeArrayKlass::cast(k)->element_type();
956 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
957 } else {
958 assert(k->is_objArray_klass(), "Must be");
959 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
960 assert(element_klass != NULL, "Must have an element klass");
961 comp_mirror = Handle(THREAD, element_klass->java_mirror());
962 }
963 assert(comp_mirror() != NULL, "must have a mirror");
964
965 // Two-way link between the array klass and its component mirror:
966 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
967 set_component_mirror(mirror(), comp_mirror());
968 // See below for ordering dependencies between field array_klass in component mirror
969 // and java_mirror in this klass.
970 } else {
971 assert(k->is_instance_klass(), "Must be");
972
973 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
974 if (HAS_PENDING_EXCEPTION) {
975 // If any of the fields throws an exception like OOM remove the klass field
976 // from the mirror so GC doesn't follow it after the klass has been deallocated.
977 // This mirror looks like a primitive type, which logically it is because it
978 // it represents no class.
979 java_lang_Class::set_klass(mirror(), NULL);
980 return;
981 }
982 }
983
984 // set the classLoader field in the java_lang_Class instance
985 assert(class_loader() == k->class_loader(), "should be same");
986 set_class_loader(mirror(), class_loader());
987
988 // Setup indirection from klass->mirror
989 // after any exceptions can happen during allocations.
990 k->set_java_mirror(mirror);
991
992 // Set the module field in the java_lang_Class instance. This must be done
993 // after the mirror is set.
994 set_mirror_module_field(k, mirror, module, THREAD);
995
996 if (comp_mirror() != NULL) {
997 // Set after k->java_mirror() is published, because compiled code running
998 // concurrently doesn't expect a k to have a null java_mirror.
999 release_set_array_klass(comp_mirror(), k);
1000 }
1001 } else {
1002 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1003 fixup_mirror_list()->push(k);
1004 }
1005 }
1006
1007 #if INCLUDE_CDS_JAVA_HEAP
1008 // Clears mirror fields. Static final fields with initial values are reloaded
1009 // from constant pool. The object identity hash is in the object header and is
1010 // not affected.
1011 class ResetMirrorField: public FieldClosure {
1012 private:
1013 Handle _m;
1014
1015 public:
1016 ResetMirrorField(Handle mirror) : _m(mirror) {}
1017
1018 void do_field(fieldDescriptor* fd) {
1019 assert(DumpSharedSpaces, "dump time only");
1020 assert(_m.not_null(), "Mirror cannot be NULL");
1021
1022 if (fd->is_static() && fd->has_initial_value()) {
1023 initialize_static_field(fd, _m, Thread::current());
1024 return;
1025 }
1026
1027 BasicType ft = fd->field_type();
1028 switch (ft) {
1029 case T_BYTE:
1030 _m()->byte_field_put(fd->offset(), 0);
1031 break;
1032 case T_CHAR:
1033 _m()->char_field_put(fd->offset(), 0);
1034 break;
1035 case T_DOUBLE:
1036 _m()->double_field_put(fd->offset(), 0);
1037 break;
1038 case T_FLOAT:
1039 _m()->float_field_put(fd->offset(), 0);
1040 break;
1041 case T_INT:
1042 _m()->int_field_put(fd->offset(), 0);
1043 break;
1044 case T_LONG:
1045 _m()->long_field_put(fd->offset(), 0);
1046 break;
1047 case T_SHORT:
1048 _m()->short_field_put(fd->offset(), 0);
1049 break;
1050 case T_BOOLEAN:
1051 _m()->bool_field_put(fd->offset(), false);
1052 break;
1053 case T_ARRAY:
1054 case T_OBJECT: {
1055 // It might be useful to cache the String field, but
1056 // for now just clear out any reference field
1057 oop o = _m()->obj_field(fd->offset());
1058 _m()->obj_field_put(fd->offset(), NULL);
1059 break;
1060 }
1061 default:
1062 ShouldNotReachHere();
1063 break;
1064 }
1065 }
1066 };
1067
1068 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1069 assert(HeapShared::is_heap_object_archiving_allowed(),
1070 "HeapShared::is_heap_object_archiving_allowed() must be true");
1071
1072 for (int t = 0; t <= T_VOID; t++) {
1073 oop m = Universe::_mirrors[t];
1074 if (m != NULL) {
1075 // Update the field at _array_klass_offset to point to the relocated array klass.
1076 oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1077 assert(archived_m != NULL, "sanity");
1078 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1079 assert(ak != NULL || t == T_VOID, "should not be NULL");
1080 if (ak != NULL) {
1081 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak, true);
1082 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1083 }
1084
1085 // Clear the fields. Just to be safe
1086 Klass *k = m->klass();
1087 Handle archived_mirror_h(THREAD, archived_m);
1088 ResetMirrorField reset(archived_mirror_h);
1089 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1090
1091 log_trace(cds, heap, mirror)(
1092 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1093 type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1094
1095 Universe::_mirrors[t] = archived_m;
1096 }
1097 }
1098
1099 assert(Universe::_mirrors[T_INT] != NULL &&
1100 Universe::_mirrors[T_FLOAT] != NULL &&
1101 Universe::_mirrors[T_DOUBLE] != NULL &&
1102 Universe::_mirrors[T_BYTE] != NULL &&
1103 Universe::_mirrors[T_BOOLEAN] != NULL &&
1104 Universe::_mirrors[T_CHAR] != NULL &&
1105 Universe::_mirrors[T_LONG] != NULL &&
1106 Universe::_mirrors[T_SHORT] != NULL &&
1107 Universe::_mirrors[T_VOID] != NULL, "sanity");
1108
1109 Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1110 Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1111 Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1112 Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1113 Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1114 Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1115 Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1116 Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1117 Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1118 }
1119
1120 //
1121 // After the mirror object is successfully archived, the archived
1122 // klass is set with _has_archived_raw_mirror flag.
1123 //
1124 // The _has_archived_raw_mirror flag is cleared at runtime when the
1125 // archived mirror is restored. If archived java heap data cannot
1126 // be used at runtime, new mirror object is created for the shared
1127 // class. The _has_archived_raw_mirror is cleared also during the process.
1128 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1129 assert(HeapShared::is_heap_object_archiving_allowed(),
1130 "HeapShared::is_heap_object_archiving_allowed() must be true");
1131
1132 // Mirror is already archived
1133 if (k->has_raw_archived_mirror()) {
1134 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1135 return k->archived_java_mirror_raw();
1136 }
1137
1138 // No mirror
1139 oop mirror = k->java_mirror();
1140 if (mirror == NULL) {
1141 return NULL;
1142 }
1143
1144 if (k->is_instance_klass()) {
1145 InstanceKlass *ik = InstanceKlass::cast(k);
1146 assert(ik->signers() == NULL, "class with signer should have been excluded");
1147
1148 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1149 ik->is_shared_app_class())) {
1150 // Archiving mirror for classes from non-builtin loaders is not
1151 // supported. Clear the _java_mirror within the archived class.
1152 k->set_java_mirror_handle(NULL);
1153 return NULL;
1154 }
1155 }
1156
1157 // Now start archiving the mirror object
1158 oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1159 if (archived_mirror == NULL) {
1160 return NULL;
1161 }
1162
1163 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1164 if (archived_mirror == NULL) {
1165 return NULL;
1166 }
1167
1168 k->set_archived_java_mirror_raw(archived_mirror);
1169
1170 k->set_has_raw_archived_mirror();
1171
1172 ResourceMark rm;
1173 log_trace(cds, heap, mirror)(
1174 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1175 k->external_name(), p2i(mirror), p2i(archived_mirror));
1176
1177 return archived_mirror;
1178 }
1179
1180 // The process is based on create_mirror().
1181 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1182 oop archived_mirror,
1183 Thread *THREAD) {
1184 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1185 // to archived metadata and objects below.
1186 Klass *c = archived_mirror->klass();
1187 Handle archived_mirror_h(THREAD, archived_mirror);
1188 ResetMirrorField reset(archived_mirror_h);
1189 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1190
1191 if (k->is_array_klass()) {
1192 oop archived_comp_mirror;
1193 if (k->is_typeArray_klass()) {
1194 // The primitive type mirrors are already archived. Get the archived mirror.
1195 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1196 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1197 assert(archived_comp_mirror != NULL, "Must be");
1198 } else {
1199 assert(k->is_objArray_klass(), "Must be");
1200 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1201 assert(element_klass != NULL, "Must have an element klass");
1202 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1203 if (archived_comp_mirror == NULL) {
1204 return NULL;
1205 }
1206 }
1207 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1208 } else {
1209 assert(k->is_instance_klass(), "Must be");
1210
1211 // Reset local static fields in the mirror
1212 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1213
1214 java_lang_Class:set_init_lock(archived_mirror, NULL);
1215
1216 set_protection_domain(archived_mirror, NULL);
1217 }
1218
1219 // clear class loader and mirror_module_field
1220 set_class_loader(archived_mirror, NULL);
1221 set_module(archived_mirror, NULL);
1222
1223 // The archived mirror's field at _klass_offset is still pointing to the original
1224 // klass. Updated the field in the archived mirror to point to the relocated
1225 // klass in the archive.
1226 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror), true);
1227 log_debug(cds, heap, mirror)(
1228 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1229 p2i(as_Klass(mirror)), p2i(reloc_k));
1230 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1231
1232 // The field at _array_klass_offset is pointing to the original one dimension
1233 // higher array klass if exists. Relocate the pointer.
1234 Klass *arr = array_klass_acquire(mirror);
1235 if (arr != NULL) {
1236 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr, true);
1237 log_debug(cds, heap, mirror)(
1238 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1239 p2i(arr), p2i(reloc_arr));
1240 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1241 }
1242 return archived_mirror;
1243 }
1244
1245 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1246 if (MetaspaceShared::relocation_delta() != 0) {
1247 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1248
1249 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1250 if (ak != NULL) {
1251 archived_mirror->metadata_field_put(_array_klass_offset,
1252 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1253 }
1254 }
1255 }
1256
1257 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1258 assert(MetaspaceShared::relocation_delta() != 0, "must be");
1259
1260 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1261 archived_mirror->metadata_field_put(_klass_offset,
1262 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1263
1264 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1265 if (ak != NULL) {
1266 archived_mirror->metadata_field_put(_array_klass_offset,
1267 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1268 }
1269 }
1270
1271
1272 // Returns true if the mirror is updated, false if no archived mirror
1273 // data is present. After the archived mirror object is restored, the
1274 // shared klass' _has_raw_archived_mirror flag is cleared.
1275 bool java_lang_Class::restore_archived_mirror(Klass *k,
1276 Handle class_loader, Handle module,
1277 Handle protection_domain, TRAPS) {
1278 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1279 // see more details in SystemDictionary::resolve_well_known_classes().
1280 if (!SystemDictionary::Class_klass_loaded()) {
1281 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1282 fixup_mirror_list()->push(k);
1283 return true;
1284 }
1285
1286 oop m = HeapShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1287 if (m == NULL) {
1288 return false;
1289 }
1290
1291 // mirror is archived, restore
1292 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1293 assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1294 assert(as_Klass(m) == k, "must be");
1295 Handle mirror(THREAD, m);
1296
1297 if (!k->is_array_klass()) {
1298 // - local static final fields with initial values were initialized at dump time
1299
1300 // create the init_lock
1301 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1302 set_init_lock(mirror(), r);
1303
1304 if (protection_domain.not_null()) {
1305 set_protection_domain(mirror(), protection_domain());
1306 }
1307 }
1308
1309 assert(class_loader() == k->class_loader(), "should be same");
1310 if (class_loader.not_null()) {
1311 set_class_loader(mirror(), class_loader());
1312 }
1313
1314 k->set_java_mirror(mirror);
1315 k->clear_has_raw_archived_mirror();
1316
1317 set_mirror_module_field(k, mirror, module, THREAD);
1318
1319 if (log_is_enabled(Trace, cds, heap, mirror)) {
1320 ResourceMark rm(THREAD);
1321 log_trace(cds, heap, mirror)(
1322 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1323 }
1324
1325 return true;
1326 }
1327 #endif // INCLUDE_CDS_JAVA_HEAP
1328
1329 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1330 assert(_module_offset != 0, "must have been computed already");
1331 java_lang_Class::set_module(k->java_mirror(), module());
1332 }
1333
1334 int java_lang_Class::oop_size(oop java_class) {
1335 assert(_oop_size_offset != 0, "must be set");
1336 int size = java_class->int_field(_oop_size_offset);
1337 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1338 return size;
1339 }
1340
1341
1342 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1343 assert(_oop_size_offset != 0, "must be set");
1344 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1345 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1346 }
1347
1348 int java_lang_Class::static_oop_field_count(oop java_class) {
1349 assert(_static_oop_field_count_offset != 0, "must be set");
1350 return java_class->int_field(_static_oop_field_count_offset);
1351 }
1352
1353 int java_lang_Class::static_oop_field_count_raw(oop java_class) {
1354 assert(_static_oop_field_count_offset != 0, "must be set");
1355 return java_class->int_field_raw(_static_oop_field_count_offset);
1356 }
1357
1358 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1359 assert(_static_oop_field_count_offset != 0, "must be set");
1360 java_class->int_field_put(_static_oop_field_count_offset, size);
1361 }
1362
1363 oop java_lang_Class::protection_domain(oop java_class) {
1364 assert(_protection_domain_offset != 0, "must be set");
1365 return java_class->obj_field(_protection_domain_offset);
1366 }
1367 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1368 assert(_protection_domain_offset != 0, "must be set");
1369 java_class->obj_field_put(_protection_domain_offset, pd);
1370 }
1371
1372 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1373 assert(_component_mirror_offset != 0, "must be set");
1374 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1375 }
1376 oop java_lang_Class::component_mirror(oop java_class) {
1377 assert(_component_mirror_offset != 0, "must be set");
1378 return java_class->obj_field(_component_mirror_offset);
1379 }
1380
1381 oop java_lang_Class::init_lock(oop java_class) {
1382 assert(_init_lock_offset != 0, "must be set");
1383 return java_class->obj_field(_init_lock_offset);
1384 }
1385 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1386 assert(_init_lock_offset != 0, "must be set");
1387 java_class->obj_field_put(_init_lock_offset, init_lock);
1388 }
1389
1390 objArrayOop java_lang_Class::signers(oop java_class) {
1391 assert(_signers_offset != 0, "must be set");
1392 return (objArrayOop)java_class->obj_field(_signers_offset);
1393 }
1394 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1395 assert(_signers_offset != 0, "must be set");
1396 java_class->obj_field_put(_signers_offset, (oop)signers);
1397 }
1398
1399
1400 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1401 assert(_class_loader_offset != 0, "offsets should have been initialized");
1402 java_class->obj_field_put(_class_loader_offset, loader);
1403 }
1404
1405 oop java_lang_Class::class_loader(oop java_class) {
1406 assert(_class_loader_offset != 0, "must be set");
1407 return java_class->obj_field(_class_loader_offset);
1408 }
1409
1410 oop java_lang_Class::module(oop java_class) {
1411 assert(_module_offset != 0, "must be set");
1412 return java_class->obj_field(_module_offset);
1413 }
1414
1415 void java_lang_Class::set_module(oop java_class, oop module) {
1416 assert(_module_offset != 0, "must be set");
1417 java_class->obj_field_put(_module_offset, module);
1418 }
1419
1420 oop java_lang_Class::name(Handle java_class, TRAPS) {
1421 assert(_name_offset != 0, "must be set");
1422 oop o = java_class->obj_field(_name_offset);
1423 if (o == NULL) {
1424 o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1425 java_class->obj_field_put(_name_offset, o);
1426 }
1427 return o;
1428 }
1429
1430 oop java_lang_Class::source_file(oop java_class) {
1431 assert(_source_file_offset != 0, "must be set");
1432 return java_class->obj_field(_source_file_offset);
1433 }
1434
1435 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1436 assert(_source_file_offset != 0, "must be set");
1437 java_class->obj_field_put(_source_file_offset, source_file);
1438 }
1439
1440 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1441 // This should be improved by adding a field at the Java level or by
1442 // introducing a new VM klass (see comment in ClassFileParser)
1443 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_NULL);
1444 if (type != T_VOID) {
1445 Klass* aklass = Universe::typeArrayKlassObj(type);
1446 assert(aklass != NULL, "correct bootstrap");
1447 release_set_array_klass(java_class, aklass);
1448 }
1449 #ifdef ASSERT
1450 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1451 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1452 #endif
1453 return java_class;
1454 }
1455
1456
1457 Klass* java_lang_Class::as_Klass(oop java_class) {
1458 //%note memory_2
1459 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1460 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1461 assert(k == NULL || k->is_klass(), "type check");
1462 return k;
1463 }
1464
1465 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1466 //%note memory_2
1467 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1468 Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1469 assert(k == NULL || k->is_klass(), "type check");
1470 return k;
1471 }
1472
1473
1474 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1475 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1476 java_class->metadata_field_put(_klass_offset, klass);
1477 }
1478
1479
1480 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1481 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1482 Symbol* name = NULL;
1483 bool is_instance = false;
1484 if (is_primitive(java_class)) {
1485 name = vmSymbols::type_signature(primitive_type(java_class));
1486 } else {
1487 Klass* k = as_Klass(java_class);
1488 is_instance = k->is_instance_klass();
1489 name = k->name();
1490 }
1491 if (name == NULL) {
1492 st->print("<null>");
1493 return;
1494 }
1495 if (is_instance) st->print("L");
1496 st->write((char*) name->base(), (int) name->utf8_length());
1497 if (is_instance) st->print(";");
1498 }
1499
1500 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1501 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1502 Symbol* name;
1503 if (is_primitive(java_class)) {
1504 name = vmSymbols::type_signature(primitive_type(java_class));
1505 // Because this can create a new symbol, the caller has to decrement
1506 // the refcount, so make adjustment here and below for symbols returned
1507 // that are not created or incremented due to a successful lookup.
1508 name->increment_refcount();
1509 } else {
1510 Klass* k = as_Klass(java_class);
1511 if (!k->is_instance_klass()) {
1512 name = k->name();
1513 name->increment_refcount();
1514 } else {
1515 ResourceMark rm;
1516 const char* sigstr = k->signature_name();
1517 int siglen = (int) strlen(sigstr);
1518 if (!intern_if_not_found) {
1519 name = SymbolTable::probe(sigstr, siglen);
1520 } else {
1521 name = SymbolTable::new_symbol(sigstr, siglen);
1522 }
1523 }
1524 }
1525 return name;
1526 }
1527
1528 // Returns the Java name for this Java mirror (Resource allocated)
1529 // See Klass::external_name().
1530 // For primitive type Java mirrors, its type name is returned.
1531 const char* java_lang_Class::as_external_name(oop java_class) {
1532 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1533 const char* name = NULL;
1534 if (is_primitive(java_class)) {
1535 name = type2name(primitive_type(java_class));
1536 } else {
1537 name = as_Klass(java_class)->external_name();
1538 }
1539 if (name == NULL) {
1540 name = "<null>";
1541 }
1542 return name;
1543 }
1544
1545 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1546 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1547 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1548 return k;
1549 }
1550
1551
1552 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1553 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1554 java_class->release_metadata_field_put(_array_klass_offset, klass);
1555 }
1556
1557
1558 BasicType java_lang_Class::primitive_type(oop java_class) {
1559 assert(java_lang_Class::is_primitive(java_class), "just checking");
1560 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1561 BasicType type = T_VOID;
1562 if (ak != NULL) {
1563 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1564 type = ArrayKlass::cast(ak)->element_type();
1565 } else {
1566 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1567 }
1568 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1569 return type;
1570 }
1571
1572 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1573 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1574 if (is_primitive(java_class)) {
1575 if (reference_klass != NULL)
1576 (*reference_klass) = NULL;
1577 return primitive_type(java_class);
1578 } else {
1579 if (reference_klass != NULL)
1580 (*reference_klass) = as_Klass(java_class);
1581 return T_OBJECT;
1582 }
1583 }
1584
1585
1586 oop java_lang_Class::primitive_mirror(BasicType t) {
1587 oop mirror = Universe::java_mirror(t);
1588 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1589 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1590 return mirror;
1591 }
1592
1593 bool java_lang_Class::offsets_computed = false;
1594 int java_lang_Class::classRedefinedCount_offset = -1;
1595
1596 #define CLASS_FIELDS_DO(macro) \
1597 macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1598 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1599 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1600 macro(_module_offset, k, "module", module_signature, false); \
1601 macro(_name_offset, k, "name", string_signature, false); \
1602
1603 void java_lang_Class::compute_offsets() {
1604 if (offsets_computed) {
1605 return;
1606 }
1607
1608 offsets_computed = true;
1609
1610 InstanceKlass* k = SystemDictionary::Class_klass();
1611 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1612
1613 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1614 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1615 // GC treats them the same.
1616 _init_lock_offset = _component_mirror_offset;
1617
1618 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1619 }
1620
1621 #if INCLUDE_CDS
1622 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1623 f->do_bool(&offsets_computed);
1624 f->do_u4((u4*)&_init_lock_offset);
1625
1626 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1627
1628 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1629 }
1630 #endif
1631
1632 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1633 assert(classRedefinedCount_offset != -1, "offsets should have been initialized");
1634 return the_class_mirror->int_field(classRedefinedCount_offset);
1635 }
1636
1637 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1638 assert(classRedefinedCount_offset != -1, "offsets should have been initialized");
1639 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1640 }
1641
1642
1643 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1644 // platform thread structure, and a eetop offset which was used for thread
1645 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1646 // merged, so in the HotSpot VM we just use the eetop field for the thread
1647 // instead of the privateInfo_offset.
1648 //
1649 // Note: The stackSize field is only present starting in 1.4.
1650
1651 int java_lang_Thread::_name_offset = 0;
1652 int java_lang_Thread::_group_offset = 0;
1653 int java_lang_Thread::_contextClassLoader_offset = 0;
1654 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1655 int java_lang_Thread::_priority_offset = 0;
1656 int java_lang_Thread::_eetop_offset = 0;
1657 int java_lang_Thread::_interrupted_offset = 0;
1658 int java_lang_Thread::_daemon_offset = 0;
1659 int java_lang_Thread::_stillborn_offset = 0;
1660 int java_lang_Thread::_stackSize_offset = 0;
1661 int java_lang_Thread::_tid_offset = 0;
1662 int java_lang_Thread::_thread_status_offset = 0;
1663 int java_lang_Thread::_park_blocker_offset = 0;
1664
1665 #define THREAD_FIELDS_DO(macro) \
1666 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1667 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1668 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1669 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1670 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1671 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1672 macro(_eetop_offset, k, "eetop", long_signature, false); \
1673 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1674 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1675 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1676 macro(_tid_offset, k, "tid", long_signature, false); \
1677 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1678 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1679
1680 void java_lang_Thread::compute_offsets() {
1681 assert(_group_offset == 0, "offsets should be initialized only once");
1682
1683 InstanceKlass* k = SystemDictionary::Thread_klass();
1684 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1685 }
1686
1687 #if INCLUDE_CDS
1688 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1689 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1690 }
1691 #endif
1692
1693 JavaThread* java_lang_Thread::thread(oop java_thread) {
1694 return (JavaThread*)java_thread->address_field(_eetop_offset);
1695 }
1696
1697
1698 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1699 java_thread->address_field_put(_eetop_offset, (address)thread);
1700 }
1701
1702 bool java_lang_Thread::interrupted(oop java_thread) {
1703 // Make sure the caller can safely access oops.
1704 assert(Thread::current()->is_VM_thread() ||
1705 (JavaThread::current()->thread_state() != _thread_blocked &&
1706 JavaThread::current()->thread_state() != _thread_in_native),
1707 "Unsafe access to oop");
1708 return java_thread->bool_field_volatile(_interrupted_offset);
1709 }
1710
1711 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1712 // Make sure the caller can safely access oops.
1713 assert(Thread::current()->is_VM_thread() ||
1714 (JavaThread::current()->thread_state() != _thread_blocked &&
1715 JavaThread::current()->thread_state() != _thread_in_native),
1716 "Unsafe access to oop");
1717 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1718 }
1719
1720
1721 oop java_lang_Thread::name(oop java_thread) {
1722 return java_thread->obj_field(_name_offset);
1723 }
1724
1725
1726 void java_lang_Thread::set_name(oop java_thread, oop name) {
1727 java_thread->obj_field_put(_name_offset, name);
1728 }
1729
1730
1731 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1732 return (ThreadPriority)java_thread->int_field(_priority_offset);
1733 }
1734
1735
1736 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1737 java_thread->int_field_put(_priority_offset, priority);
1738 }
1739
1740
1741 oop java_lang_Thread::threadGroup(oop java_thread) {
1742 return java_thread->obj_field(_group_offset);
1743 }
1744
1745
1746 bool java_lang_Thread::is_stillborn(oop java_thread) {
1747 return java_thread->bool_field(_stillborn_offset) != 0;
1748 }
1749
1750
1751 // We never have reason to turn the stillborn bit off
1752 void java_lang_Thread::set_stillborn(oop java_thread) {
1753 java_thread->bool_field_put(_stillborn_offset, true);
1754 }
1755
1756
1757 bool java_lang_Thread::is_alive(oop java_thread) {
1758 JavaThread* thr = java_lang_Thread::thread(java_thread);
1759 return (thr != NULL);
1760 }
1761
1762
1763 bool java_lang_Thread::is_daemon(oop java_thread) {
1764 return java_thread->bool_field(_daemon_offset) != 0;
1765 }
1766
1767
1768 void java_lang_Thread::set_daemon(oop java_thread) {
1769 java_thread->bool_field_put(_daemon_offset, true);
1770 }
1771
1772 oop java_lang_Thread::context_class_loader(oop java_thread) {
1773 return java_thread->obj_field(_contextClassLoader_offset);
1774 }
1775
1776 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1777 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1778 }
1779
1780
1781 jlong java_lang_Thread::stackSize(oop java_thread) {
1782 return java_thread->long_field(_stackSize_offset);
1783 }
1784
1785 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1786 void java_lang_Thread::set_thread_status(oop java_thread,
1787 java_lang_Thread::ThreadStatus status) {
1788 java_thread->int_field_put(_thread_status_offset, status);
1789 }
1790
1791 // Read thread status value from threadStatus field in java.lang.Thread java class.
1792 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1793 // Make sure the caller is operating on behalf of the VM or is
1794 // running VM code (state == _thread_in_vm).
1795 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1796 JavaThread::current()->thread_state() == _thread_in_vm,
1797 "Java Thread is not running in vm");
1798 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1799 }
1800
1801
1802 jlong java_lang_Thread::thread_id(oop java_thread) {
1803 return java_thread->long_field(_tid_offset);
1804 }
1805
1806 oop java_lang_Thread::park_blocker(oop java_thread) {
1807 return java_thread->obj_field(_park_blocker_offset);
1808 }
1809
1810 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1811 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1812 switch (status) {
1813 case NEW : return "NEW";
1814 case RUNNABLE : return "RUNNABLE";
1815 case SLEEPING : return "TIMED_WAITING (sleeping)";
1816 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1817 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1818 case PARKED : return "WAITING (parking)";
1819 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1820 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1821 case TERMINATED : return "TERMINATED";
1822 default : return "UNKNOWN";
1823 };
1824 }
1825 int java_lang_ThreadGroup::_parent_offset = 0;
1826 int java_lang_ThreadGroup::_name_offset = 0;
1827 int java_lang_ThreadGroup::_threads_offset = 0;
1828 int java_lang_ThreadGroup::_groups_offset = 0;
1829 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1830 int java_lang_ThreadGroup::_destroyed_offset = 0;
1831 int java_lang_ThreadGroup::_daemon_offset = 0;
1832 int java_lang_ThreadGroup::_nthreads_offset = 0;
1833 int java_lang_ThreadGroup::_ngroups_offset = 0;
1834
1835 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1836 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1837 return java_thread_group->obj_field(_parent_offset);
1838 }
1839
1840 // ("name as oop" accessor is not necessary)
1841
1842 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1843 oop name = java_thread_group->obj_field(_name_offset);
1844 // ThreadGroup.name can be null
1845 if (name != NULL) {
1846 return java_lang_String::as_utf8_string(name);
1847 }
1848 return NULL;
1849 }
1850
1851 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1852 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1853 return java_thread_group->int_field(_nthreads_offset);
1854 }
1855
1856 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1857 oop threads = java_thread_group->obj_field(_threads_offset);
1858 assert(threads != NULL, "threadgroups should have threads");
1859 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1860 return objArrayOop(threads);
1861 }
1862
1863 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1864 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1865 return java_thread_group->int_field(_ngroups_offset);
1866 }
1867
1868 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1869 oop groups = java_thread_group->obj_field(_groups_offset);
1870 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1871 return objArrayOop(groups);
1872 }
1873
1874 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1875 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1876 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1877 }
1878
1879 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1880 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1881 return java_thread_group->bool_field(_destroyed_offset) != 0;
1882 }
1883
1884 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1885 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1886 return java_thread_group->bool_field(_daemon_offset) != 0;
1887 }
1888
1889 #define THREADGROUP_FIELDS_DO(macro) \
1890 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1891 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1892 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1893 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1894 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1895 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1896 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1897 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1898 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1899
1900 void java_lang_ThreadGroup::compute_offsets() {
1901 assert(_parent_offset == 0, "offsets should be initialized only once");
1902
1903 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1904 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1905 }
1906
1907 #if INCLUDE_CDS
1908 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1909 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1910 }
1911 #endif
1912
1913 #define THROWABLE_FIELDS_DO(macro) \
1914 macro(backtrace_offset, k, "backtrace", object_signature, false); \
1915 macro(detailMessage_offset, k, "detailMessage", string_signature, false); \
1916 macro(stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1917 macro(depth_offset, k, "depth", int_signature, false); \
1918 macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1919
1920 void java_lang_Throwable::compute_offsets() {
1921 InstanceKlass* k = SystemDictionary::Throwable_klass();
1922 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1923 }
1924
1925 #if INCLUDE_CDS
1926 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1927 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1928 }
1929 #endif
1930
1931 oop java_lang_Throwable::unassigned_stacktrace() {
1932 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1933 oop base = ik->static_field_base_raw();
1934 return base->obj_field(static_unassigned_stacktrace_offset);
1935 }
1936
1937 oop java_lang_Throwable::backtrace(oop throwable) {
1938 return throwable->obj_field_acquire(backtrace_offset);
1939 }
1940
1941
1942 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1943 throwable->release_obj_field_put(backtrace_offset, value);
1944 }
1945
1946 int java_lang_Throwable::depth(oop throwable) {
1947 return throwable->int_field(depth_offset);
1948 }
1949
1950 void java_lang_Throwable::set_depth(oop throwable, int value) {
1951 throwable->int_field_put(depth_offset, value);
1952 }
1953
1954 oop java_lang_Throwable::message(oop throwable) {
1955 return throwable->obj_field(detailMessage_offset);
1956 }
1957
1958
1959 // Return Symbol for detailed_message or NULL
1960 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1961 PRESERVE_EXCEPTION_MARK; // Keep original exception
1962 oop detailed_message = java_lang_Throwable::message(throwable);
1963 if (detailed_message != NULL) {
1964 return java_lang_String::as_symbol(detailed_message);
1965 }
1966 return NULL;
1967 }
1968
1969 void java_lang_Throwable::set_message(oop throwable, oop value) {
1970 throwable->obj_field_put(detailMessage_offset, value);
1971 }
1972
1973
1974 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1975 throwable->obj_field_put(stackTrace_offset, st_element_array);
1976 }
1977
1978 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1979 set_stacktrace(throwable, NULL);
1980 }
1981
1982
1983 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1984 ResourceMark rm;
1985 Klass* k = throwable->klass();
1986 assert(k != NULL, "just checking");
1987 st->print("%s", k->external_name());
1988 oop msg = message(throwable);
1989 if (msg != NULL) {
1990 st->print(": %s", java_lang_String::as_utf8_string(msg));
1991 }
1992 }
1993
1994 // After this many redefines, the stack trace is unreliable.
1995 const int MAX_VERSION = USHRT_MAX;
1996
1997 static inline bool version_matches(Method* method, int version) {
1998 assert(version < MAX_VERSION, "version is too big");
1999 return method != NULL && (method->constants()->version() == version);
2000 }
2001
2002 // This class provides a simple wrapper over the internal structure of
2003 // exception backtrace to insulate users of the backtrace from needing
2004 // to know what it looks like.
2005 // The code of this class is not GC safe. Allocations can only happen
2006 // in expand().
2007 class BacktraceBuilder: public StackObj {
2008 friend class BacktraceIterator;
2009 private:
2010 Handle _backtrace;
2011 objArrayOop _head;
2012 typeArrayOop _methods;
2013 typeArrayOop _bcis;
2014 objArrayOop _mirrors;
2015 typeArrayOop _names; // Needed to insulate method name against redefinition.
2016 // True if the top frame of the backtrace is omitted because it shall be hidden.
2017 bool _has_hidden_top_frame;
2018 int _index;
2019 NoSafepointVerifier _nsv;
2020
2021 enum {
2022 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2023 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2024 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2025 trace_names_offset = java_lang_Throwable::trace_names_offset,
2026 trace_next_offset = java_lang_Throwable::trace_next_offset,
2027 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2028 trace_size = java_lang_Throwable::trace_size,
2029 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2030 };
2031
2032 // get info out of chunks
2033 static typeArrayOop get_methods(objArrayHandle chunk) {
2034 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2035 assert(methods != NULL, "method array should be initialized in backtrace");
2036 return methods;
2037 }
2038 static typeArrayOop get_bcis(objArrayHandle chunk) {
2039 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2040 assert(bcis != NULL, "bci array should be initialized in backtrace");
2041 return bcis;
2042 }
2043 static objArrayOop get_mirrors(objArrayHandle chunk) {
2044 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2045 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2046 return mirrors;
2047 }
2048 static typeArrayOop get_names(objArrayHandle chunk) {
2049 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2050 assert(names != NULL, "names array should be initialized in backtrace");
2051 return names;
2052 }
2053 static bool has_hidden_top_frame(objArrayHandle chunk) {
2054 oop hidden = chunk->obj_at(trace_hidden_offset);
2055 return hidden != NULL;
2056 }
2057
2058 public:
2059
2060 // constructor for new backtrace
2061 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) {
2062 expand(CHECK);
2063 _backtrace = Handle(THREAD, _head);
2064 _index = 0;
2065 }
2066
2067 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2068 _methods = get_methods(backtrace);
2069 _bcis = get_bcis(backtrace);
2070 _mirrors = get_mirrors(backtrace);
2071 _names = get_names(backtrace);
2072 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2073 assert(_methods->length() == _bcis->length() &&
2074 _methods->length() == _mirrors->length() &&
2075 _mirrors->length() == _names->length(),
2076 "method and source information arrays should match");
2077
2078 // head is the preallocated backtrace
2079 _head = backtrace();
2080 _backtrace = Handle(thread, _head);
2081 _index = 0;
2082 }
2083
2084 void expand(TRAPS) {
2085 objArrayHandle old_head(THREAD, _head);
2086 PauseNoSafepointVerifier pnsv(&_nsv);
2087
2088 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2089 objArrayHandle new_head(THREAD, head);
2090
2091 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2092 typeArrayHandle new_methods(THREAD, methods);
2093
2094 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2095 typeArrayHandle new_bcis(THREAD, bcis);
2096
2097 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2098 objArrayHandle new_mirrors(THREAD, mirrors);
2099
2100 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2101 typeArrayHandle new_names(THREAD, names);
2102
2103 if (!old_head.is_null()) {
2104 old_head->obj_at_put(trace_next_offset, new_head());
2105 }
2106 new_head->obj_at_put(trace_methods_offset, new_methods());
2107 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2108 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2109 new_head->obj_at_put(trace_names_offset, new_names());
2110 new_head->obj_at_put(trace_hidden_offset, NULL);
2111
2112 _head = new_head();
2113 _methods = new_methods();
2114 _bcis = new_bcis();
2115 _mirrors = new_mirrors();
2116 _names = new_names();
2117 _index = 0;
2118 }
2119
2120 oop backtrace() {
2121 return _backtrace();
2122 }
2123
2124 inline void push(Method* method, int bci, TRAPS) {
2125 // Smear the -1 bci to 0 since the array only holds unsigned
2126 // shorts. The later line number lookup would just smear the -1
2127 // to a 0 even if it could be recorded.
2128 if (bci == SynchronizationEntryBCI) bci = 0;
2129
2130 if (_index >= trace_chunk_size) {
2131 methodHandle mhandle(THREAD, method);
2132 expand(CHECK);
2133 method = mhandle();
2134 }
2135
2136 _methods->ushort_at_put(_index, method->orig_method_idnum());
2137 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2138
2139 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2140 // klass owning the symbols alive so their refcounts aren't decremented.
2141 Symbol* name = method->name();
2142 _names->symbol_at_put(_index, name);
2143
2144 // We need to save the mirrors in the backtrace to keep the class
2145 // from being unloaded while we still have this stack trace.
2146 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2147 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2148 _index++;
2149 }
2150
2151 void set_has_hidden_top_frame(TRAPS) {
2152 if (!_has_hidden_top_frame) {
2153 // It would be nice to add java/lang/Boolean::TRUE here
2154 // to indicate that this backtrace has a hidden top frame.
2155 // But this code is used before TRUE is allocated.
2156 // Therefore let's just use an arbitrary legal oop
2157 // available right here. _methods is a short[].
2158 assert(_methods != NULL, "we need a legal oop");
2159 _has_hidden_top_frame = true;
2160 _head->obj_at_put(trace_hidden_offset, _methods);
2161 }
2162 }
2163 };
2164
2165 struct BacktraceElement : public StackObj {
2166 int _method_id;
2167 int _bci;
2168 int _version;
2169 Symbol* _name;
2170 Handle _mirror;
2171 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2172 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2173 };
2174
2175 class BacktraceIterator : public StackObj {
2176 int _index;
2177 objArrayHandle _result;
2178 objArrayHandle _mirrors;
2179 typeArrayHandle _methods;
2180 typeArrayHandle _bcis;
2181 typeArrayHandle _names;
2182
2183 void init(objArrayHandle result, Thread* thread) {
2184 // Get method id, bci, version and mirror from chunk
2185 _result = result;
2186 if (_result.not_null()) {
2187 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2188 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2189 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2190 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2191 _index = 0;
2192 }
2193 }
2194 public:
2195 BacktraceIterator(objArrayHandle result, Thread* thread) {
2196 init(result, thread);
2197 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2198 }
2199
2200 BacktraceElement next(Thread* thread) {
2201 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2202 _methods->ushort_at(_index),
2203 Backtrace::version_at(_bcis->int_at(_index)),
2204 Backtrace::bci_at(_bcis->int_at(_index)),
2205 _names->symbol_at(_index));
2206 _index++;
2207
2208 if (_index >= java_lang_Throwable::trace_chunk_size) {
2209 int next_offset = java_lang_Throwable::trace_next_offset;
2210 // Get next chunk
2211 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2212 init(result, thread);
2213 }
2214 return e;
2215 }
2216
2217 bool repeat() {
2218 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2219 }
2220 };
2221
2222
2223 // Print stack trace element to resource allocated buffer
2224 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2225 int version, int bci, Symbol* name) {
2226 ResourceMark rm;
2227
2228 // Get strings and string lengths
2229 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2230 const char* klass_name = holder->external_name();
2231 int buf_len = (int)strlen(klass_name);
2232
2233 char* method_name = name->as_C_string();
2234 buf_len += (int)strlen(method_name);
2235
2236 char* source_file_name = NULL;
2237 Symbol* source = Backtrace::get_source_file_name(holder, version);
2238 if (source != NULL) {
2239 source_file_name = source->as_C_string();
2240 buf_len += (int)strlen(source_file_name);
2241 }
2242
2243 char *module_name = NULL, *module_version = NULL;
2244 ModuleEntry* module = holder->module();
2245 if (module->is_named()) {
2246 module_name = module->name()->as_C_string();
2247 buf_len += (int)strlen(module_name);
2248 if (module->version() != NULL) {
2249 module_version = module->version()->as_C_string();
2250 buf_len += (int)strlen(module_version);
2251 }
2252 }
2253
2254 // Allocate temporary buffer with extra space for formatting and line number
2255 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2256
2257 // Print stack trace line in buffer
2258 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2259
2260 // Print module information
2261 if (module_name != NULL) {
2262 if (module_version != NULL) {
2263 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2264 } else {
2265 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2266 }
2267 }
2268
2269 // The method can be NULL if the requested class version is gone
2270 Method* method = holder->method_with_orig_idnum(method_id, version);
2271 if (!version_matches(method, version)) {
2272 strcat(buf, "Redefined)");
2273 } else {
2274 int line_number = Backtrace::get_line_number(method, bci);
2275 if (line_number == -2) {
2276 strcat(buf, "Native Method)");
2277 } else {
2278 if (source_file_name != NULL && (line_number != -1)) {
2279 // Sourcename and linenumber
2280 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2281 } else if (source_file_name != NULL) {
2282 // Just sourcename
2283 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2284 } else {
2285 // Neither sourcename nor linenumber
2286 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2287 }
2288 CompiledMethod* nm = method->code();
2289 if (WizardMode && nm != NULL) {
2290 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2291 }
2292 }
2293 }
2294
2295 st->print_cr("%s", buf);
2296 }
2297
2298 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2299 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2300 int method_id = method->orig_method_idnum();
2301 int version = method->constants()->version();
2302 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2303 }
2304
2305 /**
2306 * Print the throwable message and its stack trace plus all causes by walking the
2307 * cause chain. The output looks the same as of Throwable.printStackTrace().
2308 */
2309 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2310 // First, print the message.
2311 print(throwable(), st);
2312 st->cr();
2313
2314 // Now print the stack trace.
2315 Thread* THREAD = Thread::current();
2316 while (throwable.not_null()) {
2317 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2318 if (result.is_null()) {
2319 st->print_raw_cr("\t<<no stack trace available>>");
2320 return;
2321 }
2322 BacktraceIterator iter(result, THREAD);
2323
2324 while (iter.repeat()) {
2325 BacktraceElement bte = iter.next(THREAD);
2326 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2327 }
2328 {
2329 // Call getCause() which doesn't necessarily return the _cause field.
2330 EXCEPTION_MARK;
2331 JavaValue cause(T_OBJECT);
2332 JavaCalls::call_virtual(&cause,
2333 throwable,
2334 throwable->klass(),
2335 vmSymbols::getCause_name(),
2336 vmSymbols::void_throwable_signature(),
2337 THREAD);
2338 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2339 if (HAS_PENDING_EXCEPTION) {
2340 CLEAR_PENDING_EXCEPTION;
2341 throwable = Handle();
2342 } else {
2343 throwable = Handle(THREAD, (oop) cause.get_jobject());
2344 if (throwable.not_null()) {
2345 st->print("Caused by: ");
2346 print(throwable(), st);
2347 st->cr();
2348 }
2349 }
2350 }
2351 }
2352 }
2353
2354 /**
2355 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2356 */
2357 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2358 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2359 JavaValue result(T_VOID);
2360 JavaCalls::call_virtual(&result,
2361 throwable,
2362 SystemDictionary::Throwable_klass(),
2363 vmSymbols::printStackTrace_name(),
2364 vmSymbols::void_method_signature(),
2365 THREAD);
2366 }
2367
2368 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2369 if (!StackTraceInThrowable) return;
2370 ResourceMark rm(THREAD);
2371
2372 // Start out by clearing the backtrace for this object, in case the VM
2373 // runs out of memory while allocating the stack trace
2374 set_backtrace(throwable(), NULL);
2375 // Clear lazily constructed Java level stacktrace if refilling occurs
2376 // This is unnecessary in 1.7+ but harmless
2377 clear_stacktrace(throwable());
2378
2379 int max_depth = MaxJavaStackTraceDepth;
2380 JavaThread* thread = (JavaThread*)THREAD;
2381
2382 BacktraceBuilder bt(CHECK);
2383
2384 // If there is no Java frame just return the method that was being called
2385 // with bci 0
2386 if (!thread->has_last_Java_frame()) {
2387 if (max_depth >= 1 && method() != NULL) {
2388 bt.push(method(), 0, CHECK);
2389 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2390 set_depth(throwable(), 1);
2391 set_backtrace(throwable(), bt.backtrace());
2392 }
2393 return;
2394 }
2395
2396 // Instead of using vframe directly, this version of fill_in_stack_trace
2397 // basically handles everything by hand. This significantly improved the
2398 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2399 // See bug 6333838 for more details.
2400 // The "ASSERT" here is to verify this method generates the exactly same stack
2401 // trace as utilizing vframe.
2402 #ifdef ASSERT
2403 vframeStream st(thread);
2404 #endif
2405 int total_count = 0;
2406 RegisterMap map(thread, false);
2407 int decode_offset = 0;
2408 CompiledMethod* nm = NULL;
2409 bool skip_fillInStackTrace_check = false;
2410 bool skip_throwableInit_check = false;
2411 bool skip_hidden = !ShowHiddenFrames;
2412
2413 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2414 Method* method = NULL;
2415 int bci = 0;
2416
2417 // Compiled java method case.
2418 if (decode_offset != 0) {
2419 DebugInfoReadStream stream(nm, decode_offset);
2420 decode_offset = stream.read_int();
2421 method = (Method*)nm->metadata_at(stream.read_int());
2422 bci = stream.read_bci();
2423 } else {
2424 if (fr.is_first_frame()) break;
2425 address pc = fr.pc();
2426 if (fr.is_interpreted_frame()) {
2427 address bcp = fr.interpreter_frame_bcp();
2428 method = fr.interpreter_frame_method();
2429 bci = method->bci_from(bcp);
2430 fr = fr.sender(&map);
2431 } else {
2432 CodeBlob* cb = fr.cb();
2433 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2434 // but non nmethod
2435 fr = fr.sender(&map);
2436 if (cb == NULL || !cb->is_compiled()) {
2437 continue;
2438 }
2439 nm = cb->as_compiled_method();
2440 if (nm->method()->is_native()) {
2441 method = nm->method();
2442 bci = 0;
2443 } else {
2444 PcDesc* pd = nm->pc_desc_at(pc);
2445 decode_offset = pd->scope_decode_offset();
2446 // if decode_offset is not equal to 0, it will execute the
2447 // "compiled java method case" at the beginning of the loop.
2448 continue;
2449 }
2450 }
2451 }
2452 #ifdef ASSERT
2453 assert(st.method() == method && st.bci() == bci,
2454 "Wrong stack trace");
2455 st.next();
2456 #endif
2457
2458 // the format of the stacktrace will be:
2459 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2460 // - 0 or more <init> methods for the exception class (skipped)
2461 // - rest of the stack
2462
2463 if (!skip_fillInStackTrace_check) {
2464 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2465 throwable->is_a(method->method_holder())) {
2466 continue;
2467 }
2468 else {
2469 skip_fillInStackTrace_check = true; // gone past them all
2470 }
2471 }
2472 if (!skip_throwableInit_check) {
2473 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2474
2475 // skip <init> methods of the exception class and superclasses
2476 // This is simlar to classic VM.
2477 if (method->name() == vmSymbols::object_initializer_name() &&
2478 throwable->is_a(method->method_holder())) {
2479 continue;
2480 } else {
2481 // there are none or we've seen them all - either way stop checking
2482 skip_throwableInit_check = true;
2483 }
2484 }
2485 if (method->is_hidden()) {
2486 if (skip_hidden) {
2487 if (total_count == 0) {
2488 // The top frame will be hidden from the stack trace.
2489 bt.set_has_hidden_top_frame(CHECK);
2490 }
2491 continue;
2492 }
2493 }
2494 bt.push(method, bci, CHECK);
2495 total_count++;
2496 }
2497
2498 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2499
2500 // Put completed stack trace into throwable object
2501 set_backtrace(throwable(), bt.backtrace());
2502 set_depth(throwable(), total_count);
2503 }
2504
2505 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2506 // No-op if stack trace is disabled
2507 if (!StackTraceInThrowable) {
2508 return;
2509 }
2510
2511 // Disable stack traces for some preallocated out of memory errors
2512 if (!Universe::should_fill_in_stack_trace(throwable)) {
2513 return;
2514 }
2515
2516 PRESERVE_EXCEPTION_MARK;
2517
2518 JavaThread* thread = JavaThread::active();
2519 fill_in_stack_trace(throwable, method, thread);
2520 // ignore exceptions thrown during stack trace filling
2521 CLEAR_PENDING_EXCEPTION;
2522 }
2523
2524 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2525 // Allocate stack trace - backtrace is created but not filled in
2526
2527 // No-op if stack trace is disabled
2528 if (!StackTraceInThrowable) return;
2529 BacktraceBuilder bt(CHECK); // creates a backtrace
2530 set_backtrace(throwable(), bt.backtrace());
2531 }
2532
2533
2534 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2535 // Fill in stack trace into preallocated backtrace (no GC)
2536
2537 // No-op if stack trace is disabled
2538 if (!StackTraceInThrowable) return;
2539
2540 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2541
2542 JavaThread* THREAD = JavaThread::current();
2543
2544 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2545 assert(backtrace.not_null(), "backtrace should have been preallocated");
2546
2547 ResourceMark rm(THREAD);
2548 vframeStream st(THREAD);
2549
2550 BacktraceBuilder bt(THREAD, backtrace);
2551
2552 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2553 // methods as preallocated errors aren't created by "java" code.
2554
2555 // fill in as much stack trace as possible
2556 int chunk_count = 0;
2557 for (;!st.at_end(); st.next()) {
2558 bt.push(st.method(), st.bci(), CHECK);
2559 chunk_count++;
2560
2561 // Bail-out for deep stacks
2562 if (chunk_count >= trace_chunk_size) break;
2563 }
2564 set_depth(throwable(), chunk_count);
2565 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2566
2567 // We support the Throwable immutability protocol defined for Java 7.
2568 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2569 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2570 }
2571
2572 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2573 objArrayHandle stack_trace_array_h, TRAPS) {
2574
2575 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2576 THROW(vmSymbols::java_lang_NullPointerException());
2577 }
2578
2579 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2580
2581 if (stack_trace_array_h->length() != depth(throwable())) {
2582 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2583 }
2584
2585 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2586 BacktraceIterator iter(result, THREAD);
2587
2588 int index = 0;
2589 while (iter.repeat()) {
2590 BacktraceElement bte = iter.next(THREAD);
2591
2592 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2593
2594 if (stack_trace_element.is_null()) {
2595 THROW(vmSymbols::java_lang_NullPointerException());
2596 }
2597
2598 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2599 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2600
2601 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2602 method,
2603 bte._version,
2604 bte._bci,
2605 bte._name, CHECK);
2606 }
2607 }
2608
2609 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2610 Thread* THREAD = Thread::current();
2611 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
2612 BacktraceIterator iter(result, THREAD);
2613 // No backtrace available.
2614 if (!iter.repeat()) return false;
2615
2616 // If the exception happened in a frame that has been hidden, i.e.,
2617 // omitted from the back trace, we can not compute the message.
2618 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2619 if (hidden != NULL) {
2620 return false;
2621 }
2622
2623 // Get first backtrace element.
2624 BacktraceElement bte = iter.next(THREAD);
2625
2626 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2627 assert(holder != NULL, "first element should be non-null");
2628 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2629
2630 // Original version is no longer available.
2631 if (m == NULL || !version_matches(m, bte._version)) {
2632 return false;
2633 }
2634
2635 *method = m;
2636 *bci = bte._bci;
2637 return true;
2638 }
2639
2640 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2641 // Allocate java.lang.StackTraceElement instance
2642 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2643 assert(k != NULL, "must be loaded in 1.4+");
2644 if (k->should_be_initialized()) {
2645 k->initialize(CHECK_NULL);
2646 }
2647
2648 Handle element = k->allocate_instance_handle(CHECK_NULL);
2649
2650 int version = method->constants()->version();
2651 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL);
2652 return element();
2653 }
2654
2655 void java_lang_StackTraceElement::fill_in(Handle element,
2656 InstanceKlass* holder, const methodHandle& method,
2657 int version, int bci, Symbol* name, TRAPS) {
2658 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2659
2660 ResourceMark rm(THREAD);
2661 HandleMark hm(THREAD);
2662
2663 // Fill in class name
2664 Handle java_class(THREAD, holder->java_mirror());
2665 oop classname = java_lang_Class::name(java_class, CHECK);
2666 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2667 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2668
2669 oop loader = holder->class_loader();
2670 if (loader != NULL) {
2671 oop loader_name = java_lang_ClassLoader::name(loader);
2672 if (loader_name != NULL)
2673 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2674 }
2675
2676 // Fill in method name
2677 oop methodname = StringTable::intern(name, CHECK);
2678 java_lang_StackTraceElement::set_methodName(element(), methodname);
2679
2680 // Fill in module name and version
2681 ModuleEntry* module = holder->module();
2682 if (module->is_named()) {
2683 oop module_name = StringTable::intern(module->name(), CHECK);
2684 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2685 oop module_version;
2686 if (module->version() != NULL) {
2687 module_version = StringTable::intern(module->version(), CHECK);
2688 } else {
2689 module_version = NULL;
2690 }
2691 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2692 }
2693
2694 if (method() == NULL || !version_matches(method(), version)) {
2695 // The method was redefined, accurate line number information isn't available
2696 java_lang_StackTraceElement::set_fileName(element(), NULL);
2697 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2698 } else {
2699 Symbol* source;
2700 oop source_file;
2701 int line_number;
2702 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK);
2703
2704 java_lang_StackTraceElement::set_fileName(element(), source_file);
2705 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2706 }
2707 }
2708
2709 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class,
2710 InstanceKlass* holder,
2711 int version,
2712 const methodHandle& method,
2713 int bci,
2714 Symbol*& source,
2715 oop& source_file,
2716 int& line_number, TRAPS) {
2717 // Fill in source file name and line number.
2718 source = Backtrace::get_source_file_name(holder, version);
2719 source_file = java_lang_Class::source_file(java_class());
2720 if (source != NULL) {
2721 // Class was not redefined. We can trust its cache if set,
2722 // else we have to initialize it.
2723 if (source_file == NULL) {
2724 source_file = StringTable::intern(source, CHECK);
2725 java_lang_Class::set_source_file(java_class(), source_file);
2726 }
2727 } else {
2728 // Class was redefined. Dump the cache if it was set.
2729 if (source_file != NULL) {
2730 source_file = NULL;
2731 java_lang_Class::set_source_file(java_class(), source_file);
2732 }
2733 }
2734 line_number = Backtrace::get_line_number(method(), bci);
2735 }
2736
2737 #if INCLUDE_JVMCI
2738 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci,
2739 Symbol*& filename, int& line_number, TRAPS) {
2740 ResourceMark rm(THREAD);
2741 HandleMark hm(THREAD);
2742
2743 filename = NULL;
2744 line_number = -1;
2745
2746 oop source_file;
2747 int version = method->constants()->version();
2748 InstanceKlass* holder = method->method_holder();
2749 Handle java_class(THREAD, holder->java_mirror());
2750 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK);
2751 }
2752 #endif // INCLUDE_JVMCI
2753
2754 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2755 HandleMark hm(THREAD);
2756 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2757 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2758 // we should expand MemberName::name when Throwable uses StackTrace
2759 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2760 return method;
2761 }
2762
2763 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2764 // set Method* or mid/cpref
2765 HandleMark hm(THREAD);
2766 Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2767 InstanceKlass* ik = method->method_holder();
2768 CallInfo info(method(), ik, CHECK);
2769 MethodHandles::init_method_MemberName(mname, info);
2770 // set bci
2771 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2772 // method may be redefined; store the version
2773 int version = method->constants()->version();
2774 assert((jushort)version == version, "version should be short");
2775 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2776 }
2777
2778 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2779 ResourceMark rm(THREAD);
2780 HandleMark hm(THREAD);
2781 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2782 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2783 InstanceKlass* holder = InstanceKlass::cast(clazz);
2784 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2785
2786 short version = stackFrame->short_field(_version_offset);
2787 int bci = stackFrame->int_field(_bci_offset);
2788 Symbol* name = method->name();
2789 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2790 version, bci, name, CHECK);
2791 }
2792
2793 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2794 macro(_memberName_offset, k, "memberName", object_signature, false); \
2795 macro(_bci_offset, k, "bci", int_signature, false)
2796
2797 void java_lang_StackFrameInfo::compute_offsets() {
2798 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2799 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2800 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2801 }
2802
2803 #if INCLUDE_CDS
2804 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2805 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2806 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2807 }
2808 #endif
2809
2810 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2811 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2812 macro(_locals_offset, k, "locals", object_array_signature, false); \
2813 macro(_operands_offset, k, "operands", object_array_signature, false); \
2814 macro(_mode_offset, k, "mode", int_signature, false)
2815
2816 void java_lang_LiveStackFrameInfo::compute_offsets() {
2817 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2818 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2819 }
2820
2821 #if INCLUDE_CDS
2822 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2823 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2824 }
2825 #endif
2826
2827 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2828 macro(override_offset, k, "override", bool_signature, false)
2829
2830 void java_lang_reflect_AccessibleObject::compute_offsets() {
2831 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2832 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2833 }
2834
2835 #if INCLUDE_CDS
2836 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2837 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2838 }
2839 #endif
2840
2841 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2842 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2843 return (jboolean) reflect->bool_field(override_offset);
2844 }
2845
2846 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2847 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2848 reflect->bool_field_put(override_offset, (int) value);
2849 }
2850
2851 #define METHOD_FIELDS_DO(macro) \
2852 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2853 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
2854 macro(returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2855 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2856 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2857 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2858 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2859 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2860 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2861 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2862 macro(annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
2863
2864 void java_lang_reflect_Method::compute_offsets() {
2865 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2866 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2867 }
2868
2869 #if INCLUDE_CDS
2870 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2871 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2872 }
2873 #endif
2874
2875 Handle java_lang_reflect_Method::create(TRAPS) {
2876 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2877 Klass* klass = SystemDictionary::reflect_Method_klass();
2878 // This class is eagerly initialized during VM initialization, since we keep a refence
2879 // to one of the methods
2880 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2881 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2882 }
2883
2884 oop java_lang_reflect_Method::clazz(oop reflect) {
2885 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2886 return reflect->obj_field(clazz_offset);
2887 }
2888
2889 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2890 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2891 reflect->obj_field_put(clazz_offset, value);
2892 }
2893
2894 int java_lang_reflect_Method::slot(oop reflect) {
2895 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2896 return reflect->int_field(slot_offset);
2897 }
2898
2899 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2900 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2901 reflect->int_field_put(slot_offset, value);
2902 }
2903
2904 void java_lang_reflect_Method::set_name(oop method, oop value) {
2905 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2906 method->obj_field_put(name_offset, value);
2907 }
2908
2909 oop java_lang_reflect_Method::return_type(oop method) {
2910 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2911 return method->obj_field(returnType_offset);
2912 }
2913
2914 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2915 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2916 method->obj_field_put(returnType_offset, value);
2917 }
2918
2919 oop java_lang_reflect_Method::parameter_types(oop method) {
2920 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2921 return method->obj_field(parameterTypes_offset);
2922 }
2923
2924 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2925 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2926 method->obj_field_put(parameterTypes_offset, value);
2927 }
2928
2929 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2930 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2931 method->obj_field_put(exceptionTypes_offset, value);
2932 }
2933
2934 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2935 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2936 method->int_field_put(modifiers_offset, value);
2937 }
2938
2939 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2940 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2941 method->obj_field_put(signature_offset, value);
2942 }
2943
2944 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2945 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2946 method->obj_field_put(annotations_offset, value);
2947 }
2948
2949 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2950 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2951 method->obj_field_put(parameter_annotations_offset, value);
2952 }
2953
2954 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2955 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2956 method->obj_field_put(annotation_default_offset, value);
2957 }
2958
2959 #define CONSTRUCTOR_FIELDS_DO(macro) \
2960 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2961 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2962 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2963 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2964 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2965 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2966 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2967 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
2968
2969 void java_lang_reflect_Constructor::compute_offsets() {
2970 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2971 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2972 }
2973
2974 #if INCLUDE_CDS
2975 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
2976 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2977 }
2978 #endif
2979
2980 Handle java_lang_reflect_Constructor::create(TRAPS) {
2981 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2982 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2983 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2984 InstanceKlass* ik = InstanceKlass::cast(k);
2985 // Ensure it is initialized
2986 ik->initialize(CHECK_NH);
2987 return ik->allocate_instance_handle(THREAD);
2988 }
2989
2990 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2991 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2992 return reflect->obj_field(clazz_offset);
2993 }
2994
2995 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2996 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2997 reflect->obj_field_put(clazz_offset, value);
2998 }
2999
3000 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3001 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3002 return constructor->obj_field(parameterTypes_offset);
3003 }
3004
3005 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3006 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3007 constructor->obj_field_put(parameterTypes_offset, value);
3008 }
3009
3010 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3011 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3012 constructor->obj_field_put(exceptionTypes_offset, value);
3013 }
3014
3015 int java_lang_reflect_Constructor::slot(oop reflect) {
3016 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3017 return reflect->int_field(slot_offset);
3018 }
3019
3020 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3021 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3022 reflect->int_field_put(slot_offset, value);
3023 }
3024
3025 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3026 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3027 constructor->int_field_put(modifiers_offset, value);
3028 }
3029
3030 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3031 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3032 constructor->obj_field_put(signature_offset, value);
3033 }
3034
3035 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3036 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3037 constructor->obj_field_put(annotations_offset, value);
3038 }
3039
3040 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3041 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3042 method->obj_field_put(parameter_annotations_offset, value);
3043 }
3044
3045 #define FIELD_FIELDS_DO(macro) \
3046 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3047 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3048 macro(type_offset, k, vmSymbols::type_name(), class_signature, false); \
3049 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3050 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3051 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3052 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3053
3054 void java_lang_reflect_Field::compute_offsets() {
3055 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3056 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3057 }
3058
3059 #if INCLUDE_CDS
3060 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3061 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3062 }
3063 #endif
3064
3065 Handle java_lang_reflect_Field::create(TRAPS) {
3066 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3067 Symbol* name = vmSymbols::java_lang_reflect_Field();
3068 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3069 InstanceKlass* ik = InstanceKlass::cast(k);
3070 // Ensure it is initialized
3071 ik->initialize(CHECK_NH);
3072 return ik->allocate_instance_handle(THREAD);
3073 }
3074
3075 oop java_lang_reflect_Field::clazz(oop reflect) {
3076 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3077 return reflect->obj_field(clazz_offset);
3078 }
3079
3080 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3081 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3082 reflect->obj_field_put(clazz_offset, value);
3083 }
3084
3085 oop java_lang_reflect_Field::name(oop field) {
3086 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3087 return field->obj_field(name_offset);
3088 }
3089
3090 void java_lang_reflect_Field::set_name(oop field, oop value) {
3091 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3092 field->obj_field_put(name_offset, value);
3093 }
3094
3095 oop java_lang_reflect_Field::type(oop field) {
3096 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3097 return field->obj_field(type_offset);
3098 }
3099
3100 void java_lang_reflect_Field::set_type(oop field, oop value) {
3101 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3102 field->obj_field_put(type_offset, value);
3103 }
3104
3105 int java_lang_reflect_Field::slot(oop reflect) {
3106 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3107 return reflect->int_field(slot_offset);
3108 }
3109
3110 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3111 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3112 reflect->int_field_put(slot_offset, value);
3113 }
3114
3115 int java_lang_reflect_Field::modifiers(oop field) {
3116 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3117 return field->int_field(modifiers_offset);
3118 }
3119
3120 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3121 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3122 field->int_field_put(modifiers_offset, value);
3123 }
3124
3125 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3126 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3127 field->obj_field_put(signature_offset, value);
3128 }
3129
3130 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3131 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3132 field->obj_field_put(annotations_offset, value);
3133 }
3134
3135 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3136 // Allocate java.lang.reflect.RecordComponent instance
3137 HandleMark hm(THREAD);
3138 InstanceKlass* ik = SystemDictionary::RecordComponent_klass();
3139 assert(ik != NULL, "must be loaded");
3140 ik->initialize(CHECK_NULL);
3141
3142 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3143
3144 Handle decl_class(THREAD, holder->java_mirror());
3145 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3146
3147 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3148 oop component_name = StringTable::intern(name, CHECK_NULL);
3149 java_lang_reflect_RecordComponent::set_name(element(), component_name);
3150
3151 Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3152 Handle component_type_h =
3153 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL);
3154 java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3155
3156 Method* accessor_method = NULL;
3157 {
3158 // Prepend "()" to type to create the full method signature.
3159 ResourceMark rm(THREAD);
3160 int sig_len = type->utf8_length() + 3; // "()" and null char
3161 char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3162 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string());
3163 TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3164 accessor_method = holder->find_instance_method(name, full_sig, Klass::find_private);
3165 }
3166
3167 if (accessor_method != NULL) {
3168 methodHandle method(THREAD, accessor_method);
3169 oop m = Reflection::new_method(method, false, CHECK_NULL);
3170 java_lang_reflect_RecordComponent::set_accessor(element(), m);
3171 } else {
3172 java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3173 }
3174
3175 int sig_index = component->generic_signature_index();
3176 if (sig_index > 0) {
3177 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3178 oop component_sig = StringTable::intern(sig, CHECK_NULL);
3179 java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3180 } else {
3181 java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3182 }
3183
3184 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL);
3185 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3186
3187 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL);
3188 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3189
3190 return element();
3191 }
3192
3193 #define CONSTANTPOOL_FIELDS_DO(macro) \
3194 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3195
3196 void reflect_ConstantPool::compute_offsets() {
3197 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3198 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3199 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3200 }
3201
3202 #if INCLUDE_CDS
3203 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3204 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3205 }
3206 #endif
3207
3208 #define PARAMETER_FIELDS_DO(macro) \
3209 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3210 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3211 macro(index_offset, k, vmSymbols::index_name(), int_signature, false); \
3212 macro(executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3213
3214 void java_lang_reflect_Parameter::compute_offsets() {
3215 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3216 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3217 }
3218
3219 #if INCLUDE_CDS
3220 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3221 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3222 }
3223 #endif
3224
3225 Handle java_lang_reflect_Parameter::create(TRAPS) {
3226 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3227 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3228 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3229 InstanceKlass* ik = InstanceKlass::cast(k);
3230 // Ensure it is initialized
3231 ik->initialize(CHECK_NH);
3232 return ik->allocate_instance_handle(THREAD);
3233 }
3234
3235 oop java_lang_reflect_Parameter::name(oop param) {
3236 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3237 return param->obj_field(name_offset);
3238 }
3239
3240 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3241 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3242 param->obj_field_put(name_offset, value);
3243 }
3244
3245 int java_lang_reflect_Parameter::modifiers(oop param) {
3246 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3247 return param->int_field(modifiers_offset);
3248 }
3249
3250 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3251 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3252 param->int_field_put(modifiers_offset, value);
3253 }
3254
3255 int java_lang_reflect_Parameter::index(oop param) {
3256 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3257 return param->int_field(index_offset);
3258 }
3259
3260 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3261 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3262 param->int_field_put(index_offset, value);
3263 }
3264
3265 oop java_lang_reflect_Parameter::executable(oop param) {
3266 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3267 return param->obj_field(executable_offset);
3268 }
3269
3270 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3271 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3272 param->obj_field_put(executable_offset, value);
3273 }
3274
3275
3276 int java_lang_Module::loader_offset;
3277 int java_lang_Module::name_offset;
3278 int java_lang_Module::_module_entry_offset = -1;
3279
3280 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3281 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3282 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3283 vmSymbols::java_lang_module_init_signature(),
3284 loader, module_name, CHECK_NH);
3285 }
3286
3287 #define MODULE_FIELDS_DO(macro) \
3288 macro(loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3289 macro(name_offset, k, vmSymbols::name_name(), string_signature, false)
3290
3291 void java_lang_Module::compute_offsets() {
3292 InstanceKlass* k = SystemDictionary::Module_klass();
3293 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3294 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3295 }
3296
3297 #if INCLUDE_CDS
3298 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3299 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3300 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3301 }
3302 #endif
3303
3304 oop java_lang_Module::loader(oop module) {
3305 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3306 return module->obj_field(loader_offset);
3307 }
3308
3309 void java_lang_Module::set_loader(oop module, oop value) {
3310 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3311 module->obj_field_put(loader_offset, value);
3312 }
3313
3314 oop java_lang_Module::name(oop module) {
3315 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3316 return module->obj_field(name_offset);
3317 }
3318
3319 void java_lang_Module::set_name(oop module, oop value) {
3320 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3321 module->obj_field_put(name_offset, value);
3322 }
3323
3324 ModuleEntry* java_lang_Module::module_entry(oop module) {
3325 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3326 assert(module != NULL, "module can't be null");
3327 assert(oopDesc::is_oop(module), "module must be oop");
3328
3329 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3330 if (module_entry == NULL) {
3331 // If the inject field containing the ModuleEntry* is null then return the
3332 // class loader's unnamed module.
3333 oop loader = java_lang_Module::loader(module);
3334 Handle h_loader = Handle(Thread::current(), loader);
3335 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3336 return loader_cld->unnamed_module();
3337 }
3338 return module_entry;
3339 }
3340
3341 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3342 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3343 assert(module != NULL, "module can't be null");
3344 assert(oopDesc::is_oop(module), "module must be oop");
3345 module->address_field_put(_module_entry_offset, (address)module_entry);
3346 }
3347
3348 Handle reflect_ConstantPool::create(TRAPS) {
3349 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3350 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3351 // Ensure it is initialized
3352 k->initialize(CHECK_NH);
3353 return k->allocate_instance_handle(THREAD);
3354 }
3355
3356
3357 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3358 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3359 oop mirror = value->pool_holder()->java_mirror();
3360 // Save the mirror to get back the constant pool.
3361 reflect->obj_field_put(_oop_offset, mirror);
3362 }
3363
3364 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3365 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3366
3367 oop mirror = reflect->obj_field(_oop_offset);
3368 Klass* k = java_lang_Class::as_Klass(mirror);
3369 assert(k->is_instance_klass(), "Must be");
3370
3371 // Get the constant pool back from the klass. Since class redefinition
3372 // merges the new constant pool into the old, this is essentially the
3373 // same constant pool as the original. If constant pool merging is
3374 // no longer done in the future, this will have to change to save
3375 // the original.
3376 return InstanceKlass::cast(k)->constants();
3377 }
3378
3379 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3380 macro(_base_offset, k, "base", object_signature, false)
3381
3382 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3383 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3384 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3385 }
3386
3387 #if INCLUDE_CDS
3388 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3389 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3390 }
3391 #endif
3392
3393 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3394 Klass* k = SystemDictionary::box_klass(type);
3395 if (k == NULL) return NULL;
3396 InstanceKlass* ik = InstanceKlass::cast(k);
3397 if (!ik->is_initialized()) ik->initialize(CHECK_NULL);
3398 return ik->allocate_instance(THREAD);
3399 }
3400
3401
3402 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3403 oop box = initialize_and_allocate(type, CHECK_NULL);
3404 if (box == NULL) return NULL;
3405 switch (type) {
3406 case T_BOOLEAN:
3407 box->bool_field_put(value_offset, value->z);
3408 break;
3409 case T_CHAR:
3410 box->char_field_put(value_offset, value->c);
3411 break;
3412 case T_FLOAT:
3413 box->float_field_put(value_offset, value->f);
3414 break;
3415 case T_DOUBLE:
3416 box->double_field_put(long_value_offset, value->d);
3417 break;
3418 case T_BYTE:
3419 box->byte_field_put(value_offset, value->b);
3420 break;
3421 case T_SHORT:
3422 box->short_field_put(value_offset, value->s);
3423 break;
3424 case T_INT:
3425 box->int_field_put(value_offset, value->i);
3426 break;
3427 case T_LONG:
3428 box->long_field_put(long_value_offset, value->j);
3429 break;
3430 default:
3431 return NULL;
3432 }
3433 return box;
3434 }
3435
3436
3437 BasicType java_lang_boxing_object::basic_type(oop box) {
3438 if (box == NULL) return T_ILLEGAL;
3439 BasicType type = SystemDictionary::box_klass_type(box->klass());
3440 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3441 return T_ILLEGAL;
3442 return type;
3443 }
3444
3445
3446 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3447 BasicType type = SystemDictionary::box_klass_type(box->klass());
3448 switch (type) {
3449 case T_BOOLEAN:
3450 value->z = box->bool_field(value_offset);
3451 break;
3452 case T_CHAR:
3453 value->c = box->char_field(value_offset);
3454 break;
3455 case T_FLOAT:
3456 value->f = box->float_field(value_offset);
3457 break;
3458 case T_DOUBLE:
3459 value->d = box->double_field(long_value_offset);
3460 break;
3461 case T_BYTE:
3462 value->b = box->byte_field(value_offset);
3463 break;
3464 case T_SHORT:
3465 value->s = box->short_field(value_offset);
3466 break;
3467 case T_INT:
3468 value->i = box->int_field(value_offset);
3469 break;
3470 case T_LONG:
3471 value->j = box->long_field(long_value_offset);
3472 break;
3473 default:
3474 return T_ILLEGAL;
3475 } // end switch
3476 return type;
3477 }
3478
3479
3480 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3481 BasicType type = SystemDictionary::box_klass_type(box->klass());
3482 switch (type) {
3483 case T_BOOLEAN:
3484 box->bool_field_put(value_offset, value->z);
3485 break;
3486 case T_CHAR:
3487 box->char_field_put(value_offset, value->c);
3488 break;
3489 case T_FLOAT:
3490 box->float_field_put(value_offset, value->f);
3491 break;
3492 case T_DOUBLE:
3493 box->double_field_put(long_value_offset, value->d);
3494 break;
3495 case T_BYTE:
3496 box->byte_field_put(value_offset, value->b);
3497 break;
3498 case T_SHORT:
3499 box->short_field_put(value_offset, value->s);
3500 break;
3501 case T_INT:
3502 box->int_field_put(value_offset, value->i);
3503 break;
3504 case T_LONG:
3505 box->long_field_put(long_value_offset, value->j);
3506 break;
3507 default:
3508 return T_ILLEGAL;
3509 } // end switch
3510 return type;
3511 }
3512
3513
3514 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3515 switch (type) {
3516 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3517 case T_CHAR: st->print("%d", value->c); break;
3518 case T_BYTE: st->print("%d", value->b); break;
3519 case T_SHORT: st->print("%d", value->s); break;
3520 case T_INT: st->print("%d", value->i); break;
3521 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3522 case T_FLOAT: st->print("%f", value->f); break;
3523 case T_DOUBLE: st->print("%lf", value->d); break;
3524 default: st->print("type %d?", type); break;
3525 }
3526 }
3527
3528 // Support for java_lang_ref_Reference
3529
3530 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3531 assert(obj != NULL, "sanity");
3532 if (offset != java_lang_ref_Reference::referent_offset) {
3533 return false;
3534 }
3535
3536 Klass* k = obj->klass();
3537 if (!k->is_instance_klass()) {
3538 return false;
3539 }
3540
3541 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3542 bool is_reference = ik->reference_type() != REF_NONE;
3543 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3544 return is_reference;
3545 }
3546
3547 // Support for java_lang_ref_SoftReference
3548 //
3549
3550 #define SOFTREFERENCE_FIELDS_DO(macro) \
3551 macro(timestamp_offset, k, "timestamp", long_signature, false); \
3552 macro(static_clock_offset, k, "clock", long_signature, true)
3553
3554 void java_lang_ref_SoftReference::compute_offsets() {
3555 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3556 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3557 }
3558
3559 #if INCLUDE_CDS
3560 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3561 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3562 }
3563 #endif
3564
3565 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3566 return ref->long_field(timestamp_offset);
3567 }
3568
3569 jlong java_lang_ref_SoftReference::clock() {
3570 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3571 oop base = ik->static_field_base_raw();
3572 return base->long_field(static_clock_offset);
3573 }
3574
3575 void java_lang_ref_SoftReference::set_clock(jlong value) {
3576 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3577 oop base = ik->static_field_base_raw();
3578 base->long_field_put(static_clock_offset, value);
3579 }
3580
3581 // Support for java_lang_invoke_DirectMethodHandle
3582
3583 int java_lang_invoke_DirectMethodHandle::_member_offset;
3584
3585 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3586 oop member_name = NULL;
3587 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3588 "a DirectMethodHandle oop is expected");
3589 return dmh->obj_field(member_offset_in_bytes());
3590 }
3591
3592 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3593 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3594
3595 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3596 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3597 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3598 }
3599
3600 #if INCLUDE_CDS
3601 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3602 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3603 }
3604 #endif
3605
3606 // Support for java_lang_invoke_MethodHandle
3607
3608 int java_lang_invoke_MethodHandle::_type_offset;
3609 int java_lang_invoke_MethodHandle::_form_offset;
3610
3611 int java_lang_invoke_MemberName::_clazz_offset;
3612 int java_lang_invoke_MemberName::_name_offset;
3613 int java_lang_invoke_MemberName::_type_offset;
3614 int java_lang_invoke_MemberName::_flags_offset;
3615 int java_lang_invoke_MemberName::_method_offset;
3616 int java_lang_invoke_MemberName::_vmindex_offset;
3617
3618 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3619 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3620
3621 int java_lang_invoke_LambdaForm::_vmentry_offset;
3622
3623 #define METHODHANDLE_FIELDS_DO(macro) \
3624 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3625 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3626
3627 void java_lang_invoke_MethodHandle::compute_offsets() {
3628 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3629 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3630 }
3631
3632 #if INCLUDE_CDS
3633 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3634 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3635 }
3636 #endif
3637
3638 #define MEMBERNAME_FIELDS_DO(macro) \
3639 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3640 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3641 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3642 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3643 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3644
3645 void java_lang_invoke_MemberName::compute_offsets() {
3646 InstanceKlass* k = SystemDictionary::MemberName_klass();
3647 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3648 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3649 }
3650
3651 #if INCLUDE_CDS
3652 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3653 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3654 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3655 }
3656 #endif
3657
3658 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3659 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3660 assert(k != NULL, "jdk mismatch");
3661 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3662 }
3663
3664 #if INCLUDE_CDS
3665 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3666 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3667 }
3668 #endif
3669
3670 #define LAMBDAFORM_FIELDS_DO(macro) \
3671 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3672
3673 void java_lang_invoke_LambdaForm::compute_offsets() {
3674 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3675 assert (k != NULL, "jdk mismatch");
3676 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3677 }
3678
3679 #if INCLUDE_CDS
3680 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3681 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3682 }
3683 #endif
3684
3685 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3686 return obj != NULL && is_subclass(obj->klass());
3687 }
3688
3689
3690 oop java_lang_invoke_MethodHandle::type(oop mh) {
3691 return mh->obj_field(_type_offset);
3692 }
3693
3694 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3695 mh->obj_field_put(_type_offset, mtype);
3696 }
3697
3698 oop java_lang_invoke_MethodHandle::form(oop mh) {
3699 assert(_form_offset != 0, "");
3700 return mh->obj_field(_form_offset);
3701 }
3702
3703 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3704 assert(_form_offset != 0, "");
3705 mh->obj_field_put(_form_offset, lform);
3706 }
3707
3708 /// MemberName accessors
3709
3710 oop java_lang_invoke_MemberName::clazz(oop mname) {
3711 assert(is_instance(mname), "wrong type");
3712 return mname->obj_field(_clazz_offset);
3713 }
3714
3715 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3716 assert(is_instance(mname), "wrong type");
3717 mname->obj_field_put(_clazz_offset, clazz);
3718 }
3719
3720 oop java_lang_invoke_MemberName::name(oop mname) {
3721 assert(is_instance(mname), "wrong type");
3722 return mname->obj_field(_name_offset);
3723 }
3724
3725 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3726 assert(is_instance(mname), "wrong type");
3727 mname->obj_field_put(_name_offset, name);
3728 }
3729
3730 oop java_lang_invoke_MemberName::type(oop mname) {
3731 assert(is_instance(mname), "wrong type");
3732 return mname->obj_field(_type_offset);
3733 }
3734
3735 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3736 assert(is_instance(mname), "wrong type");
3737 mname->obj_field_put(_type_offset, type);
3738 }
3739
3740 int java_lang_invoke_MemberName::flags(oop mname) {
3741 assert(is_instance(mname), "wrong type");
3742 return mname->int_field(_flags_offset);
3743 }
3744
3745 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3746 assert(is_instance(mname), "wrong type");
3747 mname->int_field_put(_flags_offset, flags);
3748 }
3749
3750
3751 // Return vmtarget from ResolvedMethodName method field through indirection
3752 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3753 assert(is_instance(mname), "wrong type");
3754 oop method = mname->obj_field(_method_offset);
3755 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3756 }
3757
3758 bool java_lang_invoke_MemberName::is_method(oop mname) {
3759 assert(is_instance(mname), "must be MemberName");
3760 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3761 }
3762
3763 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3764 assert(is_instance(mname), "wrong type");
3765 mname->obj_field_put(_method_offset, resolved_method);
3766 }
3767
3768 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3769 assert(is_instance(mname), "wrong type");
3770 return (intptr_t) mname->address_field(_vmindex_offset);
3771 }
3772
3773 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3774 assert(is_instance(mname), "wrong type");
3775 mname->address_field_put(_vmindex_offset, (address) index);
3776 }
3777
3778
3779 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3780 assert(is_instance(resolved_method), "wrong type");
3781 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3782 assert(m->is_method(), "must be");
3783 return m;
3784 }
3785
3786 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3787 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3788 assert(is_instance(resolved_method), "wrong type");
3789 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3790 }
3791
3792 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3793 assert(is_instance(resolved_method), "wrong type");
3794 resolved_method->obj_field_put(_vmholder_offset, holder);
3795 }
3796
3797 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3798 const Method* method = m();
3799
3800 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3801 oop resolved_method = ResolvedMethodTable::find_method(method);
3802 if (resolved_method != NULL) {
3803 return resolved_method;
3804 }
3805
3806 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3807 if (!k->is_initialized()) {
3808 k->initialize(CHECK_NULL);
3809 }
3810
3811 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3812
3813 NoSafepointVerifier nsv;
3814
3815 if (method->is_old()) {
3816 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3817 method->get_new_method();
3818 }
3819
3820 InstanceKlass* holder = method->method_holder();
3821
3822 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
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 set_vmholder(new_resolved_method, holder->java_mirror());
3827
3828 // Set flag in class to indicate this InstanceKlass has entries in the table
3829 // to avoid walking table during redefinition if none of the redefined classes
3830 // have any membernames in the table.
3831 holder->set_has_resolved_methods();
3832
3833 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3834 }
3835
3836 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3837 assert(is_instance(lform), "wrong type");
3838 return lform->obj_field(_vmentry_offset);
3839 }
3840
3841
3842 // Support for java_lang_invoke_MethodType
3843
3844 int java_lang_invoke_MethodType::_rtype_offset;
3845 int java_lang_invoke_MethodType::_ptypes_offset;
3846
3847 #define METHODTYPE_FIELDS_DO(macro) \
3848 macro(_rtype_offset, k, "rtype", class_signature, false); \
3849 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3850
3851 void java_lang_invoke_MethodType::compute_offsets() {
3852 InstanceKlass* k = SystemDictionary::MethodType_klass();
3853 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3854 }
3855
3856 #if INCLUDE_CDS
3857 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3858 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3859 }
3860 #endif
3861
3862 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3863 st->print("(");
3864 objArrayOop pts = ptypes(mt);
3865 for (int i = 0, limit = pts->length(); i < limit; i++) {
3866 java_lang_Class::print_signature(pts->obj_at(i), st);
3867 }
3868 st->print(")");
3869 java_lang_Class::print_signature(rtype(mt), st);
3870 }
3871
3872 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
3873 ResourceMark rm;
3874 stringStream buffer(128);
3875 print_signature(mt, &buffer);
3876 const char* sigstr = buffer.base();
3877 int siglen = (int) buffer.size();
3878 Symbol *name;
3879 if (!intern_if_not_found) {
3880 name = SymbolTable::probe(sigstr, siglen);
3881 } else {
3882 name = SymbolTable::new_symbol(sigstr, siglen);
3883 }
3884 return name;
3885 }
3886
3887 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3888 if (mt1 == mt2)
3889 return true;
3890 if (rtype(mt1) != rtype(mt2))
3891 return false;
3892 if (ptype_count(mt1) != ptype_count(mt2))
3893 return false;
3894 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3895 if (ptype(mt1, i) != ptype(mt2, i))
3896 return false;
3897 }
3898 return true;
3899 }
3900
3901 oop java_lang_invoke_MethodType::rtype(oop mt) {
3902 assert(is_instance(mt), "must be a MethodType");
3903 return mt->obj_field(_rtype_offset);
3904 }
3905
3906 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3907 assert(is_instance(mt), "must be a MethodType");
3908 return (objArrayOop) mt->obj_field(_ptypes_offset);
3909 }
3910
3911 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3912 return ptypes(mt)->obj_at(idx);
3913 }
3914
3915 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3916 return ptypes(mt)->length();
3917 }
3918
3919 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3920 objArrayOop pts = ptypes(mt);
3921 int count = pts->length();
3922 int slots = 0;
3923 for (int i = 0; i < count; i++) {
3924 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3925 slots += type2size[bt];
3926 }
3927 return slots;
3928 }
3929
3930 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3931 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3932 return type2size[bt];
3933 }
3934
3935
3936 // Support for java_lang_invoke_CallSite
3937
3938 int java_lang_invoke_CallSite::_target_offset;
3939 int java_lang_invoke_CallSite::_context_offset;
3940
3941 #define CALLSITE_FIELDS_DO(macro) \
3942 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
3943 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3944
3945 void java_lang_invoke_CallSite::compute_offsets() {
3946 InstanceKlass* k = SystemDictionary::CallSite_klass();
3947 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3948 }
3949
3950 #if INCLUDE_CDS
3951 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
3952 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3953 }
3954 #endif
3955
3956 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
3957 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3958
3959 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
3960 return dep_oop;
3961 }
3962
3963 // Support for java_lang_invoke_ConstantCallSite
3964
3965 int java_lang_invoke_ConstantCallSite::_is_frozen_offset;
3966
3967 #define CONSTANTCALLSITE_FIELDS_DO(macro) \
3968 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false)
3969
3970 void java_lang_invoke_ConstantCallSite::compute_offsets() {
3971 InstanceKlass* k = SystemDictionary::ConstantCallSite_klass();
3972 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3973 }
3974
3975 #if INCLUDE_CDS
3976 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) {
3977 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3978 }
3979 #endif
3980
3981 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3982
3983 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3984 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
3985
3986 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3987 InstanceKlass* k = SystemDictionary::Context_klass();
3988 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3989 }
3990
3991 #if INCLUDE_CDS
3992 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
3993 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3994 }
3995 #endif
3996
3997 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3998 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3999 nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
4000 volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
4001 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
4002 return dep_ctx;
4003 }
4004
4005 // Support for java_security_AccessControlContext
4006
4007 int java_security_AccessControlContext::_context_offset = 0;
4008 int java_security_AccessControlContext::_privilegedContext_offset = 0;
4009 int java_security_AccessControlContext::_isPrivileged_offset = 0;
4010 int java_security_AccessControlContext::_isAuthorized_offset = -1;
4011
4012 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
4013 macro(_context_offset, k, "context", protectiondomain_signature, false); \
4014 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
4015 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
4016 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
4017
4018 void java_security_AccessControlContext::compute_offsets() {
4019 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
4020 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
4021 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4022 }
4023
4024 #if INCLUDE_CDS
4025 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
4026 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4027 }
4028 #endif
4029
4030 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4031 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4032 assert(_isAuthorized_offset != -1, "offsets should have been initialized");
4033 // Ensure klass is initialized
4034 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_NULL);
4035 // Allocate result
4036 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_NULL);
4037 // Fill in values
4038 result->obj_field_put(_context_offset, context());
4039 result->obj_field_put(_privilegedContext_offset, privileged_context());
4040 result->bool_field_put(_isPrivileged_offset, isPrivileged);
4041 // whitelist AccessControlContexts created by the JVM
4042 result->bool_field_put(_isAuthorized_offset, true);
4043 return result;
4044 }
4045
4046
4047 // Support for java_lang_ClassLoader
4048
4049 bool java_lang_ClassLoader::offsets_computed = false;
4050 int java_lang_ClassLoader::_loader_data_offset = -1;
4051 int java_lang_ClassLoader::parallelCapable_offset = -1;
4052 int java_lang_ClassLoader::name_offset = -1;
4053 int java_lang_ClassLoader::nameAndId_offset = -1;
4054 int java_lang_ClassLoader::unnamedModule_offset = -1;
4055
4056 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4057 assert(loader != NULL, "loader must not be NULL");
4058 assert(oopDesc::is_oop(loader), "loader must be oop");
4059 return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
4060 }
4061
4062 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
4063 assert(loader != NULL, "loader must not be NULL");
4064 assert(oopDesc::is_oop(loader), "loader must be oop");
4065 return RawAccess<>::load_at(loader, _loader_data_offset);
4066 }
4067
4068 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4069 assert(loader != NULL, "loader must not be NULL");
4070 assert(oopDesc::is_oop(loader), "loader must be oop");
4071 HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4072 }
4073
4074 #define CLASSLOADER_FIELDS_DO(macro) \
4075 macro(parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4076 macro(name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4077 macro(nameAndId_offset, k1, "nameAndId", string_signature, false); \
4078 macro(unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4079 macro(parent_offset, k1, "parent", classloader_signature, false)
4080
4081 void java_lang_ClassLoader::compute_offsets() {
4082 assert(!offsets_computed, "offsets should be initialized only once");
4083 offsets_computed = true;
4084
4085 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4086 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4087
4088 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4089 }
4090
4091 #if INCLUDE_CDS
4092 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4093 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4094 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4095 }
4096 #endif
4097
4098 oop java_lang_ClassLoader::parent(oop loader) {
4099 assert(is_instance(loader), "loader must be oop");
4100 return loader->obj_field(parent_offset);
4101 }
4102
4103 // Returns the name field of this class loader. If the name field has not
4104 // been set, null will be returned.
4105 oop java_lang_ClassLoader::name(oop loader) {
4106 assert(is_instance(loader), "loader must be oop");
4107 return loader->obj_field(name_offset);
4108 }
4109
4110 // Returns the nameAndId field of this class loader. The format is
4111 // as follows:
4112 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4113 // If the defining loader has no name then <qualified-class-name> @<id>
4114 // If built-in loader, then omit '@<id>' as there is only one instance.
4115 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4116 oop java_lang_ClassLoader::nameAndId(oop loader) {
4117 assert(is_instance(loader), "loader must be oop");
4118 return loader->obj_field(nameAndId_offset);
4119 }
4120
4121 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4122 assert(is_instance(loader), "loader must be oop");
4123 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4124 oop acl = loader;
4125 debug_only(jint loop_count = 0);
4126 // This loop taken verbatim from ClassLoader.java:
4127 do {
4128 acl = parent(acl);
4129 if (cl == acl) {
4130 return true;
4131 }
4132 assert(++loop_count > 0, "loop_count overflow");
4133 } while (acl != NULL);
4134 return false;
4135 }
4136
4137 bool java_lang_ClassLoader::is_instance(oop obj) {
4138 return obj != NULL && is_subclass(obj->klass());
4139 }
4140
4141
4142 // For class loader classes, parallelCapable defined
4143 // based on non-null field
4144 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4145 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4146 assert(parallelCapable_offset != -1, "offsets should have been initialized");
4147 return (class_loader->obj_field(parallelCapable_offset) != NULL);
4148 }
4149
4150 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4151 // Fix for 4474172; see evaluation for more details
4152 loader = non_reflection_class_loader(loader);
4153
4154 oop cl = SystemDictionary::java_system_loader();
4155 while(cl != NULL) {
4156 if (cl == loader) return true;
4157 cl = parent(cl);
4158 }
4159 return false;
4160 }
4161
4162 // Return true if this is one of the class loaders associated with
4163 // the generated bytecodes for reflection.
4164 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4165 if (loader != NULL) {
4166 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4167 // This might be null in non-1.4 JDKs
4168 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4169 }
4170 return false;
4171 }
4172
4173 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4174 // See whether this is one of the class loaders associated with
4175 // the generated bytecodes for reflection, and if so, "magically"
4176 // delegate to its parent to prevent class loading from occurring
4177 // in places where applications using reflection didn't expect it.
4178 if (is_reflection_class_loader(loader)) {
4179 return parent(loader);
4180 }
4181 return loader;
4182 }
4183
4184 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4185 assert(is_instance(loader), "loader must be oop");
4186 return loader->obj_field(unnamedModule_offset);
4187 }
4188
4189 // Support for java_lang_System
4190 //
4191 #define SYSTEM_FIELDS_DO(macro) \
4192 macro(static_in_offset, k, "in", input_stream_signature, true); \
4193 macro(static_out_offset, k, "out", print_stream_signature, true); \
4194 macro(static_err_offset, k, "err", print_stream_signature, true); \
4195 macro(static_security_offset, k, "security", security_manager_signature, true)
4196
4197 void java_lang_System::compute_offsets() {
4198 InstanceKlass* k = SystemDictionary::System_klass();
4199 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4200 }
4201
4202 #if INCLUDE_CDS
4203 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4204 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4205 }
4206 #endif
4207
4208 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4209 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4210 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4211
4212 // Support for jdk_internal_misc_UnsafeConstants
4213 //
4214 class UnsafeConstantsFixup : public FieldClosure {
4215 private:
4216 int _address_size;
4217 int _page_size;
4218 bool _big_endian;
4219 bool _use_unaligned_access;
4220 int _data_cache_line_flush_size;
4221 public:
4222 UnsafeConstantsFixup() {
4223 // round up values for all static final fields
4224 _address_size = sizeof(void*);
4225 _page_size = os::vm_page_size();
4226 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4227 _use_unaligned_access = UseUnalignedAccesses;
4228 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4229 }
4230
4231 void do_field(fieldDescriptor* fd) {
4232 oop mirror = fd->field_holder()->java_mirror();
4233 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4234 assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4235 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4236 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4237 if (fd->name() == vmSymbols::address_size_name()) {
4238 mirror->int_field_put(fd->offset(), _address_size);
4239 } else if (fd->name() == vmSymbols::page_size_name()) {
4240 mirror->int_field_put(fd->offset(), _page_size);
4241 } else if (fd->name() == vmSymbols::big_endian_name()) {
4242 mirror->bool_field_put(fd->offset(), _big_endian);
4243 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4244 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4245 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4246 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4247 } else {
4248 assert(false, "unexpected UnsafeConstants field");
4249 }
4250 }
4251 };
4252
4253 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4254 UnsafeConstantsFixup fixup;
4255 SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4256 }
4257
4258 int java_lang_Class::_klass_offset;
4259 int java_lang_Class::_array_klass_offset;
4260 int java_lang_Class::_oop_size_offset;
4261 int java_lang_Class::_static_oop_field_count_offset;
4262 int java_lang_Class::_class_loader_offset;
4263 int java_lang_Class::_module_offset;
4264 int java_lang_Class::_protection_domain_offset;
4265 int java_lang_Class::_component_mirror_offset;
4266 int java_lang_Class::_init_lock_offset;
4267 int java_lang_Class::_signers_offset;
4268 int java_lang_Class::_name_offset;
4269 int java_lang_Class::_source_file_offset;
4270 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4271 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4272 int java_lang_Throwable::backtrace_offset;
4273 int java_lang_Throwable::detailMessage_offset;
4274 int java_lang_Throwable::stackTrace_offset;
4275 int java_lang_Throwable::depth_offset;
4276 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4277 int java_lang_reflect_AccessibleObject::override_offset;
4278 int java_lang_reflect_Method::clazz_offset;
4279 int java_lang_reflect_Method::name_offset;
4280 int java_lang_reflect_Method::returnType_offset;
4281 int java_lang_reflect_Method::parameterTypes_offset;
4282 int java_lang_reflect_Method::exceptionTypes_offset;
4283 int java_lang_reflect_Method::slot_offset;
4284 int java_lang_reflect_Method::modifiers_offset;
4285 int java_lang_reflect_Method::signature_offset;
4286 int java_lang_reflect_Method::annotations_offset;
4287 int java_lang_reflect_Method::parameter_annotations_offset;
4288 int java_lang_reflect_Method::annotation_default_offset;
4289 int java_lang_reflect_Constructor::clazz_offset;
4290 int java_lang_reflect_Constructor::parameterTypes_offset;
4291 int java_lang_reflect_Constructor::exceptionTypes_offset;
4292 int java_lang_reflect_Constructor::slot_offset;
4293 int java_lang_reflect_Constructor::modifiers_offset;
4294 int java_lang_reflect_Constructor::signature_offset;
4295 int java_lang_reflect_Constructor::annotations_offset;
4296 int java_lang_reflect_Constructor::parameter_annotations_offset;
4297 int java_lang_reflect_Field::clazz_offset;
4298 int java_lang_reflect_Field::name_offset;
4299 int java_lang_reflect_Field::type_offset;
4300 int java_lang_reflect_Field::slot_offset;
4301 int java_lang_reflect_Field::modifiers_offset;
4302 int java_lang_reflect_Field::signature_offset;
4303 int java_lang_reflect_Field::annotations_offset;
4304 int java_lang_reflect_Parameter::name_offset;
4305 int java_lang_reflect_Parameter::modifiers_offset;
4306 int java_lang_reflect_Parameter::index_offset;
4307 int java_lang_reflect_Parameter::executable_offset;
4308 int java_lang_boxing_object::value_offset;
4309 int java_lang_boxing_object::long_value_offset;
4310 int java_lang_ref_Reference::referent_offset;
4311 int java_lang_ref_Reference::queue_offset;
4312 int java_lang_ref_Reference::next_offset;
4313 int java_lang_ref_Reference::discovered_offset;
4314 int java_lang_ref_SoftReference::timestamp_offset;
4315 int java_lang_ref_SoftReference::static_clock_offset;
4316 int java_lang_ClassLoader::parent_offset;
4317 int java_lang_System::static_in_offset;
4318 int java_lang_System::static_out_offset;
4319 int java_lang_System::static_err_offset;
4320 int java_lang_System::static_security_offset;
4321 int java_lang_StackTraceElement::methodName_offset;
4322 int java_lang_StackTraceElement::fileName_offset;
4323 int java_lang_StackTraceElement::lineNumber_offset;
4324 int java_lang_StackTraceElement::moduleName_offset;
4325 int java_lang_StackTraceElement::moduleVersion_offset;
4326 int java_lang_StackTraceElement::classLoaderName_offset;
4327 int java_lang_StackTraceElement::declaringClass_offset;
4328 int java_lang_StackTraceElement::declaringClassObject_offset;
4329 int java_lang_StackFrameInfo::_memberName_offset;
4330 int java_lang_StackFrameInfo::_bci_offset;
4331 int java_lang_StackFrameInfo::_version_offset;
4332 int java_lang_LiveStackFrameInfo::_monitors_offset;
4333 int java_lang_LiveStackFrameInfo::_locals_offset;
4334 int java_lang_LiveStackFrameInfo::_operands_offset;
4335 int java_lang_LiveStackFrameInfo::_mode_offset;
4336 int java_lang_AssertionStatusDirectives::classes_offset;
4337 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4338 int java_lang_AssertionStatusDirectives::packages_offset;
4339 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4340 int java_lang_AssertionStatusDirectives::deflt_offset;
4341 int java_nio_Buffer::_limit_offset;
4342 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4343 int reflect_ConstantPool::_oop_offset;
4344 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4345 int java_lang_Integer_IntegerCache::_static_cache_offset;
4346 int java_lang_Long_LongCache::_static_cache_offset;
4347 int java_lang_Character_CharacterCache::_static_cache_offset;
4348 int java_lang_Short_ShortCache::_static_cache_offset;
4349 int java_lang_Byte_ByteCache::_static_cache_offset;
4350 int java_lang_Boolean::_static_TRUE_offset;
4351 int java_lang_Boolean::_static_FALSE_offset;
4352 int java_lang_reflect_RecordComponent::clazz_offset;
4353 int java_lang_reflect_RecordComponent::name_offset;
4354 int java_lang_reflect_RecordComponent::type_offset;
4355 int java_lang_reflect_RecordComponent::accessor_offset;
4356 int java_lang_reflect_RecordComponent::signature_offset;
4357 int java_lang_reflect_RecordComponent::annotations_offset;
4358 int java_lang_reflect_RecordComponent::typeAnnotations_offset;
4359
4360
4361
4362 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4363 macro(declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4364 macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4365 macro(moduleName_offset, k, "moduleName", string_signature, false); \
4366 macro(moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4367 macro(declaringClass_offset, k, "declaringClass", string_signature, false); \
4368 macro(methodName_offset, k, "methodName", string_signature, false); \
4369 macro(fileName_offset, k, "fileName", string_signature, false); \
4370 macro(lineNumber_offset, k, "lineNumber", int_signature, false)
4371
4372 // Support for java_lang_StackTraceElement
4373 void java_lang_StackTraceElement::compute_offsets() {
4374 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4375 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4376 }
4377
4378 #if INCLUDE_CDS
4379 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4380 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4381 }
4382 #endif
4383
4384 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4385 element->obj_field_put(fileName_offset, value);
4386 }
4387
4388 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4389 element->obj_field_put(declaringClass_offset, value);
4390 }
4391
4392 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4393 element->obj_field_put(methodName_offset, value);
4394 }
4395
4396 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4397 element->int_field_put(lineNumber_offset, value);
4398 }
4399
4400 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4401 element->obj_field_put(moduleName_offset, value);
4402 }
4403
4404 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4405 element->obj_field_put(moduleVersion_offset, value);
4406 }
4407
4408 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4409 element->obj_field_put(classLoaderName_offset, value);
4410 }
4411
4412 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4413 element->obj_field_put(declaringClassObject_offset, value);
4414 }
4415
4416 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4417 element->short_field_put(_version_offset, value);
4418 }
4419
4420 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4421 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
4422 element->int_field_put(_bci_offset, value);
4423 }
4424
4425 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4426 element->obj_field_put(_monitors_offset, value);
4427 }
4428
4429 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4430 element->obj_field_put(_locals_offset, value);
4431 }
4432
4433 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4434 element->obj_field_put(_operands_offset, value);
4435 }
4436
4437 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4438 element->int_field_put(_mode_offset, value);
4439 }
4440
4441 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4442 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4443 macro(classes_offset, k, "classes", string_array_signature, false); \
4444 macro(classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4445 macro(packages_offset, k, "packages", string_array_signature, false); \
4446 macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4447 macro(deflt_offset, k, "deflt", bool_signature, false)
4448
4449 void java_lang_AssertionStatusDirectives::compute_offsets() {
4450 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4451 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4452 }
4453
4454 #if INCLUDE_CDS
4455 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4456 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4457 }
4458 #endif
4459
4460 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4461 o->obj_field_put(classes_offset, val);
4462 }
4463
4464 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4465 o->obj_field_put(classEnabled_offset, val);
4466 }
4467
4468 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4469 o->obj_field_put(packages_offset, val);
4470 }
4471
4472 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4473 o->obj_field_put(packageEnabled_offset, val);
4474 }
4475
4476 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4477 o->bool_field_put(deflt_offset, val);
4478 }
4479
4480
4481 // Support for intrinsification of java.nio.Buffer.checkIndex
4482 int java_nio_Buffer::limit_offset() {
4483 return _limit_offset;
4484 }
4485
4486 #define BUFFER_FIELDS_DO(macro) \
4487 macro(_limit_offset, k, "limit", int_signature, false)
4488
4489 void java_nio_Buffer::compute_offsets() {
4490 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4491 assert(k != NULL, "must be loaded in 1.4+");
4492 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4493 }
4494
4495 #if INCLUDE_CDS
4496 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4497 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4498 }
4499 #endif
4500
4501 #define AOS_FIELDS_DO(macro) \
4502 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4503
4504 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4505 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4506 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4507 }
4508
4509 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4510 assert(_owner_offset != 0, "Must be initialized");
4511 return obj->obj_field(_owner_offset);
4512 }
4513
4514 #if INCLUDE_CDS
4515 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4516 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4517 }
4518 #endif
4519
4520 #define INTEGER_CACHE_FIELDS_DO(macro) \
4521 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4522
4523 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4524 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4525 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4526 }
4527
4528 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4529 oop base = ik->static_field_base_raw();
4530 return objArrayOop(base->obj_field(_static_cache_offset));
4531 }
4532
4533 Symbol* java_lang_Integer_IntegerCache::symbol() {
4534 return vmSymbols::java_lang_Integer_IntegerCache();
4535 }
4536
4537 #if INCLUDE_CDS
4538 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4539 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4540 }
4541 #endif
4542 #undef INTEGER_CACHE_FIELDS_DO
4543
4544 jint java_lang_Integer::value(oop obj) {
4545 jvalue v;
4546 java_lang_boxing_object::get_value(obj, &v);
4547 return v.i;
4548 }
4549
4550 #define LONG_CACHE_FIELDS_DO(macro) \
4551 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4552
4553 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4554 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4555 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4556 }
4557
4558 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4559 oop base = ik->static_field_base_raw();
4560 return objArrayOop(base->obj_field(_static_cache_offset));
4561 }
4562
4563 Symbol* java_lang_Long_LongCache::symbol() {
4564 return vmSymbols::java_lang_Long_LongCache();
4565 }
4566
4567 #if INCLUDE_CDS
4568 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4569 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4570 }
4571 #endif
4572 #undef LONG_CACHE_FIELDS_DO
4573
4574 jlong java_lang_Long::value(oop obj) {
4575 jvalue v;
4576 java_lang_boxing_object::get_value(obj, &v);
4577 return v.j;
4578 }
4579
4580 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4581 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4582
4583 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4584 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4585 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4586 }
4587
4588 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4589 oop base = ik->static_field_base_raw();
4590 return objArrayOop(base->obj_field(_static_cache_offset));
4591 }
4592
4593 Symbol* java_lang_Character_CharacterCache::symbol() {
4594 return vmSymbols::java_lang_Character_CharacterCache();
4595 }
4596
4597 #if INCLUDE_CDS
4598 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4599 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4600 }
4601 #endif
4602 #undef CHARACTER_CACHE_FIELDS_DO
4603
4604 jchar java_lang_Character::value(oop obj) {
4605 jvalue v;
4606 java_lang_boxing_object::get_value(obj, &v);
4607 return v.c;
4608 }
4609
4610 #define SHORT_CACHE_FIELDS_DO(macro) \
4611 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4612
4613 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4614 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4615 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4616 }
4617
4618 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4619 oop base = ik->static_field_base_raw();
4620 return objArrayOop(base->obj_field(_static_cache_offset));
4621 }
4622
4623 Symbol* java_lang_Short_ShortCache::symbol() {
4624 return vmSymbols::java_lang_Short_ShortCache();
4625 }
4626
4627 #if INCLUDE_CDS
4628 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4629 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4630 }
4631 #endif
4632 #undef SHORT_CACHE_FIELDS_DO
4633
4634 jshort java_lang_Short::value(oop obj) {
4635 jvalue v;
4636 java_lang_boxing_object::get_value(obj, &v);
4637 return v.s;
4638 }
4639
4640 #define BYTE_CACHE_FIELDS_DO(macro) \
4641 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4642
4643 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4644 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4645 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4646 }
4647
4648 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4649 oop base = ik->static_field_base_raw();
4650 return objArrayOop(base->obj_field(_static_cache_offset));
4651 }
4652
4653 Symbol* java_lang_Byte_ByteCache::symbol() {
4654 return vmSymbols::java_lang_Byte_ByteCache();
4655 }
4656
4657 #if INCLUDE_CDS
4658 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4659 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4660 }
4661 #endif
4662 #undef BYTE_CACHE_FIELDS_DO
4663
4664 jbyte java_lang_Byte::value(oop obj) {
4665 jvalue v;
4666 java_lang_boxing_object::get_value(obj, &v);
4667 return v.b;
4668 }
4669 #define BOOLEAN_FIELDS_DO(macro) \
4670 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4671 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4672
4673
4674 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4675 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4676 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4677 }
4678
4679 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4680 oop base = ik->static_field_base_raw();
4681 return base->obj_field(_static_TRUE_offset);
4682 }
4683
4684 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4685 oop base = ik->static_field_base_raw();
4686 return base->obj_field(_static_FALSE_offset);
4687 }
4688
4689 Symbol* java_lang_Boolean::symbol() {
4690 return vmSymbols::java_lang_Boolean();
4691 }
4692
4693 #if INCLUDE_CDS
4694 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4695 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4696 }
4697 #endif
4698 #undef BOOLEAN_CACHE_FIELDS_DO
4699
4700 jboolean java_lang_Boolean::value(oop obj) {
4701 jvalue v;
4702 java_lang_boxing_object::get_value(obj, &v);
4703 return v.z;
4704 }
4705
4706 static int member_offset(int hardcoded_offset) {
4707 return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4708 }
4709
4710 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4711 macro(clazz_offset, k, "clazz", class_signature, false); \
4712 macro(name_offset, k, "name", string_signature, false); \
4713 macro(type_offset, k, "type", class_signature, false); \
4714 macro(accessor_offset, k, "accessor", reflect_method_signature, false); \
4715 macro(signature_offset, k, "signature", string_signature, false); \
4716 macro(annotations_offset, k, "annotations", byte_array_signature, false); \
4717 macro(typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4718
4719 // Support for java_lang_reflect_RecordComponent
4720 void java_lang_reflect_RecordComponent::compute_offsets() {
4721 InstanceKlass* k = SystemDictionary::RecordComponent_klass();
4722 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4723 }
4724
4725 #if INCLUDE_CDS
4726 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4727 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4728 }
4729 #endif
4730
4731 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4732 element->obj_field_put(clazz_offset, value);
4733 }
4734
4735 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4736 element->obj_field_put(name_offset, value);
4737 }
4738
4739 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4740 element->obj_field_put(type_offset, value);
4741 }
4742
4743 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4744 element->obj_field_put(accessor_offset, value);
4745 }
4746
4747 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4748 element->obj_field_put(signature_offset, value);
4749 }
4750
4751 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
4752 element->obj_field_put(annotations_offset, value);
4753 }
4754
4755 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
4756 element->obj_field_put(typeAnnotations_offset, value);
4757 }
4758
4759 // Compute hard-coded offsets
4760 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4761 // are not available to determine the offset_of_static_fields.
4762 void JavaClasses::compute_hard_coded_offsets() {
4763
4764 // java_lang_boxing_object
4765 java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
4766 java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4767
4768 // java_lang_ref_Reference
4769 java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
4770 java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
4771 java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
4772 java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4773 }
4774
4775 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4776
4777 // Compute non-hard-coded field offsets of all the classes in this file
4778 void JavaClasses::compute_offsets() {
4779 if (UseSharedSpaces) {
4780 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4781 JvmtiExport::has_early_class_hook_env()),
4782 "JavaClasses::compute_offsets() must be called in early JVMTI phase."));
4783 // None of the classes used by the rest of this function can be replaced by
4784 // JMVTI ClassFileLoadHook.
4785 // We are safe to use the archived offsets, which have already been restored
4786 // by JavaClasses::serialize_offsets, without computing the offsets again.
4787 return;
4788 }
4789
4790 // We have already called the compute_offsets() of the
4791 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String and java_lang_Class)
4792 // earlier inside SystemDictionary::resolve_well_known_classes()
4793 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4794 }
4795
4796 #if INCLUDE_CDS
4797 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4798
4799 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4800 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4801 }
4802 #endif
4803
4804 #if INCLUDE_CDS_JAVA_HEAP
4805 bool JavaClasses::is_supported_for_archiving(oop obj) {
4806 Klass* klass = obj->klass();
4807
4808 if (klass == SystemDictionary::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
4809 klass == SystemDictionary::Module_klass() || // Module::module_entry is malloc'ed
4810 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
4811 // regular Java code. The implementation of java.lang.invoke uses generated anonymoys classes
4812 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
4813 // So for now we cannot not support these classes for archiving.
4814 //
4815 // These objects typically are not referenced by static fields, but rather by resolved
4816 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
4817 klass == SystemDictionary::ResolvedMethodName_klass() ||
4818 klass == SystemDictionary::MemberName_klass() ||
4819 klass == SystemDictionary::Context_klass()) {
4820 return false;
4821 }
4822
4823 return true;
4824 }
4825 #endif
4826
4827 #ifndef PRODUCT
4828
4829 // These functions exist to assert the validity of hard-coded field offsets to guard
4830 // against changes in the class files
4831
4832 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4833 EXCEPTION_MARK;
4834 fieldDescriptor fd;
4835 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4836 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4837 InstanceKlass* ik = InstanceKlass::cast(k);
4838 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4839 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
4840 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4841 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4842 return false;
4843 }
4844 if (fd.is_static()) {
4845 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4846 return false;
4847 }
4848 if (fd.offset() == hardcoded_offset ) {
4849 return true;
4850 } else {
4851 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4852 klass_name, field_name, hardcoded_offset, fd.offset());
4853 return false;
4854 }
4855 }
4856
4857 // Check the hard-coded field offsets of all the classes in this file
4858
4859 void JavaClasses::check_offsets() {
4860 bool valid = true;
4861
4862 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4863 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4864
4865 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4866 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4867
4868 // Boxed primitive objects (java_lang_boxing_object)
4869
4870 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4871 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4872 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4873 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4874 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4875 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4876 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4877 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4878
4879 // java.lang.ref.Reference
4880
4881 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4882 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4883 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4884 // Fake field
4885 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4886
4887 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4888 }
4889
4890 #endif // PRODUCT
4891
4892 int InjectedField::compute_offset() {
4893 InstanceKlass* ik = InstanceKlass::cast(klass());
4894 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4895 if (!may_be_java && !fs.access_flags().is_internal()) {
4896 // Only look at injected fields
4897 continue;
4898 }
4899 if (fs.name() == name() && fs.signature() == signature()) {
4900 return fs.offset();
4901 }
4902 }
4903 ResourceMark rm;
4904 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)" : "");
4905 #ifndef PRODUCT
4906 ik->print();
4907 tty->print_cr("all fields:");
4908 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4909 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4910 }
4911 #endif //PRODUCT
4912 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
4913 return -1;
4914 }
4915
4916 void javaClasses_init() {
4917 JavaClasses::compute_offsets();
4918 JavaClasses::check_offsets();
4919 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4920 }