1 /*
2 * Copyright (c) 1997, 2019, 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/typeArrayOop.inline.hpp"
54 #include "prims/jvmtiExport.hpp"
55 #include "prims/resolvedMethodTable.hpp"
56 #include "runtime/fieldDescriptor.inline.hpp"
57 #include "runtime/frame.inline.hpp"
58 #include "runtime/handles.inline.hpp"
59 #include "runtime/init.hpp"
60 #include "runtime/interfaceSupport.inline.hpp"
61 #include "runtime/java.hpp"
62 #include "runtime/javaCalls.hpp"
63 #include "runtime/jniHandles.inline.hpp"
64 #include "runtime/safepoint.hpp"
65 #include "runtime/safepointVerifiers.hpp"
66 #include "runtime/thread.inline.hpp"
67 #include "runtime/vframe.inline.hpp"
68 #include "runtime/vm_version.hpp"
69 #include "utilities/align.hpp"
70 #include "utilities/preserveException.hpp"
71 #include "utilities/utf8.hpp"
72 #if INCLUDE_JVMCI
73 #include "jvmci/jvmciJavaClasses.hpp"
74 #endif
75
76 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
77 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
78
79 #if INCLUDE_CDS
80 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
81 f->do_u4((u4*)&_##name##_offset);
82 #endif
83
84 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
85 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
86
87 InjectedField JavaClasses::_injected_fields[] = {
88 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
89 };
90
91 // Register native methods of Object
92 void java_lang_Object::register_natives(TRAPS) {
93 InstanceKlass* obj = SystemDictionary::Object_klass();
94 Method::register_native(obj, vmSymbols::hashCode_name(),
95 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
96 Method::register_native(obj, vmSymbols::wait_name(),
97 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
98 Method::register_native(obj, vmSymbols::notify_name(),
99 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
100 Method::register_native(obj, vmSymbols::notifyAll_name(),
101 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
102 Method::register_native(obj, vmSymbols::clone_name(),
103 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
104 }
105
106 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
107 return _injected_fields[id].compute_offset();
108 }
109
110 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
111 *field_count = 0;
112
113 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
114 if (sid == vmSymbols::NO_SID) {
115 // Only well known classes can inject fields
116 return NULL;
117 }
118
119 int count = 0;
120 int start = -1;
121
122 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
123 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
124 count++; \
125 if (start == -1) start = klass##_##name##_enum; \
126 }
127 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
128 #undef LOOKUP_INJECTED_FIELD
129
130 if (start != -1) {
131 *field_count = count;
132 return _injected_fields + start;
133 }
134 return NULL;
135 }
136
137
138 // Helpful routine for computing field offsets at run time rather than hardcoding them
139 // Finds local fields only, including static fields. Static field offsets are from the
140 // beginning of the mirror.
141 static void compute_offset(int &dest_offset,
142 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
143 bool is_static = false) {
144 fieldDescriptor fd;
145 if (ik == NULL) {
146 ResourceMark rm;
147 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
148 vm_exit_during_initialization("Invalid layout of well-known class");
149 }
150
151 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
152 ResourceMark rm;
153 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
154 name_symbol->as_C_string(), signature_symbol->as_C_string());
155 #ifndef PRODUCT
156 // Prints all fields and offsets
157 Log(class) lt;
158 LogStream ls(lt.error());
159 ik->print_on(&ls);
160 #endif //PRODUCT
161 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
162 }
163 dest_offset = fd.offset();
164 }
165
166 // Overloading to pass name as a string.
167 static void compute_offset(int& dest_offset, InstanceKlass* ik,
168 const char* name_string, Symbol* signature_symbol,
169 bool is_static = false) {
170 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
171 if (name == NULL) {
172 ResourceMark rm;
173 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
174 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
175 }
176 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
177 }
178
179 int java_lang_String::value_offset = 0;
180 int java_lang_String::hash_offset = 0;
181 int java_lang_String::hashIsZero_offset = 0;
182 int java_lang_String::coder_offset = 0;
183
184 bool java_lang_String::initialized = false;
185
186 bool java_lang_String::is_instance(oop obj) {
187 return is_instance_inlined(obj);
188 }
189
190 #if INCLUDE_CDS
191 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
192 f->do_u4((u4*)&offset)
193 #endif
194
195 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
196 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
197
198 #define STRING_FIELDS_DO(macro) \
199 macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
200 macro(hash_offset, k, "hash", int_signature, false); \
201 macro(hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
202 macro(coder_offset, k, "coder", byte_signature, false);
203
204 void java_lang_String::compute_offsets() {
205 if (initialized) {
206 return;
207 }
208
209 InstanceKlass* k = SystemDictionary::String_klass();
210 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
211
212 initialized = true;
213 }
214
215 #if INCLUDE_CDS
216 void java_lang_String::serialize_offsets(SerializeClosure* f) {
217 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
218 f->do_bool(&initialized);
219 }
220 #endif
221
222 class CompactStringsFixup : public FieldClosure {
223 private:
224 bool _value;
225
226 public:
227 CompactStringsFixup(bool value) : _value(value) {}
228
229 void do_field(fieldDescriptor* fd) {
230 if (fd->name() == vmSymbols::compact_strings_name()) {
231 oop mirror = fd->field_holder()->java_mirror();
232 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
233 assert(mirror != NULL, "String must have mirror already");
234 mirror->bool_field_put(fd->offset(), _value);
235 }
236 }
237 };
238
239 void java_lang_String::set_compact_strings(bool value) {
240 CompactStringsFixup fix(value);
241 SystemDictionary::String_klass()->do_local_static_fields(&fix);
242 }
243
244 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
245 assert(initialized, "Must be initialized");
246 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
247
248 // Create the String object first, so there's a chance that the String
249 // and the char array it points to end up in the same cache line.
250 oop obj;
251 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
252
253 // Create the char array. The String object must be handlized here
254 // because GC can happen as a result of the allocation attempt.
255 Handle h_obj(THREAD, obj);
256 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
257 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
258
259 // Point the String at the char array
260 obj = h_obj();
261 set_value(obj, buffer);
262 // No need to zero the offset, allocation zero'ed the entire String object
263 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
264 return h_obj;
265 }
266
267 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
268 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
269 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
270 typeArrayOop buffer = value(h_obj());
271 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
272 if (is_latin1) {
273 for (int index = 0; index < length; index++) {
274 buffer->byte_at_put(index, (jbyte)unicode[index]);
275 }
276 } else {
277 for (int index = 0; index < length; index++) {
278 buffer->char_at_put(index, unicode[index]);
279 }
280 }
281
282 #ifdef ASSERT
283 {
284 ResourceMark rm;
285 char* expected = UNICODE::as_utf8(unicode, length);
286 char* actual = as_utf8_string(h_obj());
287 if (strcmp(expected, actual) != 0) {
288 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
289 ShouldNotReachHere();
290 }
291 }
292 #endif
293
294 return h_obj;
295 }
296
297 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
298 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
299 return h_obj();
300 }
301
302 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
303 if (utf8_str == NULL) {
304 return Handle();
305 }
306 bool has_multibyte, is_latin1;
307 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
308 if (!CompactStrings) {
309 has_multibyte = true;
310 is_latin1 = false;
311 }
312
313 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
314 if (length > 0) {
315 if (!has_multibyte) {
316 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
317 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
318 } else if (is_latin1) {
319 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
320 } else {
321 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
322 }
323 }
324
325 #ifdef ASSERT
326 // This check is too strict because the input string is not necessarily valid UTF8.
327 // For example, it may be created with arbitrary content via jni_NewStringUTF.
328 /*
329 {
330 ResourceMark rm;
331 const char* expected = utf8_str;
332 char* actual = as_utf8_string(h_obj());
333 if (strcmp(expected, actual) != 0) {
334 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
335 ShouldNotReachHere();
336 }
337 }
338 */
339 #endif
340
341 return h_obj;
342 }
343
344 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
345 Handle h_obj = create_from_str(utf8_str, CHECK_0);
346 return h_obj();
347 }
348
349 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
350 const char* utf8_str = (char*)symbol->bytes();
351 int utf8_len = symbol->utf8_length();
352
353 bool has_multibyte, is_latin1;
354 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
355 if (!CompactStrings) {
356 has_multibyte = true;
357 is_latin1 = false;
358 }
359
360 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
361 if (length > 0) {
362 if (!has_multibyte) {
363 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
364 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
365 } else if (is_latin1) {
366 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
367 } else {
368 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
369 }
370 }
371
372 #ifdef ASSERT
373 {
374 ResourceMark rm;
375 const char* expected = symbol->as_utf8();
376 char* actual = as_utf8_string(h_obj());
377 if (strncmp(expected, actual, utf8_len) != 0) {
378 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
379 ShouldNotReachHere();
380 }
381 }
382 #endif
383
384 return h_obj;
385 }
386
387 // Converts a C string to a Java String based on current encoding
388 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
389 assert(str != NULL, "bad arguments");
390
391 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
392 static to_java_string_fn_t _to_java_string_fn = NULL;
393
394 if (_to_java_string_fn == NULL) {
395 void *lib_handle = os::native_java_library();
396 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
397 #if defined(_WIN32) && !defined(_WIN64)
398 if (_to_java_string_fn == NULL) {
399 // On 32 bit Windows, also try __stdcall decorated name
400 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
401 }
402 #endif
403 if (_to_java_string_fn == NULL) {
404 fatal("JNU_NewStringPlatform missing");
405 }
406 }
407
408 jstring js = NULL;
409 {
410 assert(THREAD->is_Java_thread(), "must be java thread");
411 JavaThread* thread = (JavaThread*)THREAD;
412 HandleMark hm(thread);
413 ThreadToNativeFromVM ttn(thread);
414 js = (_to_java_string_fn)(thread->jni_environment(), str);
415 }
416
417 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
418 JNIHandles::destroy_local(js); // destroy local JNIHandle.
419 return native_platform_string;
420 }
421
422 // Converts a Java String to a native C string that can be used for
423 // native OS calls.
424 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
425 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
426 static to_platform_string_fn_t _to_platform_string_fn = NULL;
427
428 if (_to_platform_string_fn == NULL) {
429 void *lib_handle = os::native_java_library();
430 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
431 if (_to_platform_string_fn == NULL) {
432 fatal("GetStringPlatformChars missing");
433 }
434 }
435
436 char *native_platform_string;
437 { JavaThread* thread = (JavaThread*)THREAD;
438 assert(thread->is_Java_thread(), "must be java thread");
439 JNIEnv *env = thread->jni_environment();
440 jstring js = (jstring) JNIHandles::make_local(env, java_string());
441 bool is_copy;
442 HandleMark hm(thread);
443 ThreadToNativeFromVM ttn(thread);
444 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
445 assert(is_copy == JNI_TRUE, "is_copy value changed");
446 JNIHandles::destroy_local(js);
447 }
448 return native_platform_string;
449 }
450
451 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
452 oop obj = java_string();
453 // Typical usage is to convert all '/' to '.' in string.
454 typeArrayOop value = java_lang_String::value(obj);
455 int length = java_lang_String::length(obj, value);
456 bool is_latin1 = java_lang_String::is_latin1(obj);
457
458 // First check if any from_char exist
459 int index; // Declared outside, used later
460 for (index = 0; index < length; index++) {
461 jchar c = !is_latin1 ? value->char_at(index) :
462 ((jchar) value->byte_at(index)) & 0xff;
463 if (c == from_char) {
464 break;
465 }
466 }
467 if (index == length) {
468 // No from_char, so do not copy.
469 return java_string;
470 }
471
472 // Check if result string will be latin1
473 bool to_is_latin1 = false;
474
475 // Replacement char must be latin1
476 if (CompactStrings && UNICODE::is_latin1(to_char)) {
477 if (is_latin1) {
478 // Source string is latin1 as well
479 to_is_latin1 = true;
480 } else if (!UNICODE::is_latin1(from_char)) {
481 // We are replacing an UTF16 char. Scan string to
482 // check if result can be latin1 encoded.
483 to_is_latin1 = true;
484 for (index = 0; index < length; index++) {
485 jchar c = value->char_at(index);
486 if (c != from_char && !UNICODE::is_latin1(c)) {
487 to_is_latin1 = false;
488 break;
489 }
490 }
491 }
492 }
493
494 // Create new UNICODE (or byte) buffer. Must handlize value because GC
495 // may happen during String and char array creation.
496 typeArrayHandle h_value(THREAD, value);
497 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
498 typeArrayOop from_buffer = h_value();
499 typeArrayOop to_buffer = java_lang_String::value(string());
500
501 // Copy contents
502 for (index = 0; index < length; index++) {
503 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
504 ((jchar) from_buffer->byte_at(index)) & 0xff;
505 if (c == from_char) {
506 c = to_char;
507 }
508 if (!to_is_latin1) {
509 to_buffer->char_at_put(index, c);
510 } else {
511 to_buffer->byte_at_put(index, (jbyte) c);
512 }
513 }
514 return string;
515 }
516
517 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
518 typeArrayOop value = java_lang_String::value(java_string);
519 length = java_lang_String::length(java_string, value);
520 bool is_latin1 = java_lang_String::is_latin1(java_string);
521
522 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
523 if (result != NULL) {
524 if (!is_latin1) {
525 for (int index = 0; index < length; index++) {
526 result[index] = value->char_at(index);
527 }
528 } else {
529 for (int index = 0; index < length; index++) {
530 result[index] = ((jchar) value->byte_at(index)) & 0xff;
531 }
532 }
533 } else {
534 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
535 }
536 return result;
537 }
538
539 unsigned int java_lang_String::hash_code(oop java_string) {
540 // The hash and hashIsZero fields are subject to a benign data race,
541 // making it crucial to ensure that any observable result of the
542 // calculation in this method stays correct under any possible read of
543 // these fields. Necessary restrictions to allow this to be correct
544 // without explicit memory fences or similar concurrency primitives is
545 // that we can ever only write to one of these two fields for a given
546 // String instance, and that the computation is idempotent and derived
547 // from immutable state
548 assert(initialized && (hash_offset > 0) && (hashIsZero_offset > 0), "Must be initialized");
549 if (java_lang_String::hash_is_set(java_string)) {
550 return java_string->int_field(hash_offset);
551 }
552
553 typeArrayOop value = java_lang_String::value(java_string);
554 int length = java_lang_String::length(java_string, value);
555 bool is_latin1 = java_lang_String::is_latin1(java_string);
556
557 unsigned int hash = 0;
558 if (length > 0) {
559 if (is_latin1) {
560 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
561 } else {
562 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
563 }
564 }
565
566 if (hash != 0) {
567 java_string->int_field_put(hash_offset, hash);
568 } else {
569 java_string->bool_field_put(hashIsZero_offset, true);
570 }
571 return hash;
572 }
573
574 char* java_lang_String::as_quoted_ascii(oop java_string) {
575 typeArrayOop value = java_lang_String::value(java_string);
576 int length = java_lang_String::length(java_string, value);
577 bool is_latin1 = java_lang_String::is_latin1(java_string);
578
579 if (length == 0) return NULL;
580
581 char* result;
582 int result_length;
583 if (!is_latin1) {
584 jchar* base = value->char_at_addr(0);
585 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
586 result = NEW_RESOURCE_ARRAY(char, result_length);
587 UNICODE::as_quoted_ascii(base, length, result, result_length);
588 } else {
589 jbyte* base = value->byte_at_addr(0);
590 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
591 result = NEW_RESOURCE_ARRAY(char, result_length);
592 UNICODE::as_quoted_ascii(base, length, result, result_length);
593 }
594 assert(result_length >= length + 1, "must not be shorter");
595 assert(result_length == (int)strlen(result) + 1, "must match");
596 return result;
597 }
598
599 Symbol* java_lang_String::as_symbol(oop java_string) {
600 typeArrayOop value = java_lang_String::value(java_string);
601 int length = java_lang_String::length(java_string, value);
602 bool is_latin1 = java_lang_String::is_latin1(java_string);
603 if (!is_latin1) {
604 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
605 Symbol* sym = SymbolTable::new_symbol(base, length);
606 return sym;
607 } else {
608 ResourceMark rm;
609 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
610 const char* base = UNICODE::as_utf8(position, length);
611 Symbol* sym = SymbolTable::new_symbol(base, length);
612 return sym;
613 }
614 }
615
616 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
617 typeArrayOop value = java_lang_String::value(java_string);
618 int length = java_lang_String::length(java_string, value);
619 bool is_latin1 = java_lang_String::is_latin1(java_string);
620 if (!is_latin1) {
621 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
622 return SymbolTable::probe_unicode(base, length);
623 } else {
624 ResourceMark rm;
625 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
626 const char* base = UNICODE::as_utf8(position, length);
627 return SymbolTable::probe(base, length);
628 }
629 }
630
631 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
632 assert(value_equals(value, java_lang_String::value(java_string)),
633 "value must be same as java_lang_String::value(java_string)");
634 int length = java_lang_String::length(java_string, value);
635 if (length == 0) {
636 return 0;
637 }
638 if (!java_lang_String::is_latin1(java_string)) {
639 return UNICODE::utf8_length(value->char_at_addr(0), length);
640 } else {
641 return UNICODE::utf8_length(value->byte_at_addr(0), length);
642 }
643 }
644
645 int java_lang_String::utf8_length(oop java_string) {
646 typeArrayOop value = java_lang_String::value(java_string);
647 return utf8_length(java_string, value);
648 }
649
650 char* java_lang_String::as_utf8_string(oop java_string) {
651 typeArrayOop value = java_lang_String::value(java_string);
652 int length = java_lang_String::length(java_string, value);
653 bool is_latin1 = java_lang_String::is_latin1(java_string);
654 if (!is_latin1) {
655 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
656 return UNICODE::as_utf8(position, length);
657 } else {
658 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
659 return UNICODE::as_utf8(position, length);
660 }
661 }
662
663 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
664 assert(value_equals(value, java_lang_String::value(java_string)),
665 "value must be same as java_lang_String::value(java_string)");
666 int length = java_lang_String::length(java_string, value);
667 bool is_latin1 = java_lang_String::is_latin1(java_string);
668 if (!is_latin1) {
669 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
670 return UNICODE::as_utf8(position, length, buf, buflen);
671 } else {
672 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
673 return UNICODE::as_utf8(position, length, buf, buflen);
674 }
675 }
676
677 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
678 typeArrayOop value = java_lang_String::value(java_string);
679 return as_utf8_string(java_string, value, buf, buflen);
680 }
681
682 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
683 typeArrayOop value = java_lang_String::value(java_string);
684 bool is_latin1 = java_lang_String::is_latin1(java_string);
685 assert(start + len <= java_lang_String::length(java_string), "just checking");
686 if (!is_latin1) {
687 jchar* position = value->char_at_addr(start);
688 return UNICODE::as_utf8(position, len);
689 } else {
690 jbyte* position = value->byte_at_addr(start);
691 return UNICODE::as_utf8(position, len);
692 }
693 }
694
695 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
696 assert(value_equals(value, java_lang_String::value(java_string)),
697 "value must be same as java_lang_String::value(java_string)");
698 assert(start + len <= java_lang_String::length(java_string), "just checking");
699 bool is_latin1 = java_lang_String::is_latin1(java_string);
700 if (!is_latin1) {
701 jchar* position = value->char_at_addr(start);
702 return UNICODE::as_utf8(position, len, buf, buflen);
703 } else {
704 jbyte* position = value->byte_at_addr(start);
705 return UNICODE::as_utf8(position, len, buf, buflen);
706 }
707 }
708
709 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
710 assert(java_string->klass() == SystemDictionary::String_klass(),
711 "must be java_string");
712 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
713 int length = java_lang_String::length(java_string, value);
714 if (length != len) {
715 return false;
716 }
717 bool is_latin1 = java_lang_String::is_latin1(java_string);
718 if (!is_latin1) {
719 for (int i = 0; i < len; i++) {
720 if (value->char_at(i) != chars[i]) {
721 return false;
722 }
723 }
724 } else {
725 for (int i = 0; i < len; i++) {
726 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
727 return false;
728 }
729 }
730 }
731 return true;
732 }
733
734 bool java_lang_String::equals(oop str1, oop str2) {
735 assert(str1->klass() == SystemDictionary::String_klass(),
736 "must be java String");
737 assert(str2->klass() == SystemDictionary::String_klass(),
738 "must be java String");
739 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
740 bool is_latin1 = java_lang_String::is_latin1(str1);
741 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
742 bool is_latin2 = java_lang_String::is_latin1(str2);
743
744 if (is_latin1 != is_latin2) {
745 // Strings with different coders are never equal.
746 return false;
747 }
748 return value_equals(value1, value2);
749 }
750
751 void java_lang_String::print(oop java_string, outputStream* st) {
752 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
753 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
754
755 if (value == NULL) {
756 // This can happen if, e.g., printing a String
757 // object before its initializer has been called
758 st->print("NULL");
759 return;
760 }
761
762 int length = java_lang_String::length(java_string, value);
763 bool is_latin1 = java_lang_String::is_latin1(java_string);
764
765 st->print("\"");
766 for (int index = 0; index < length; index++) {
767 st->print("%c", (!is_latin1) ? value->char_at(index) :
768 ((jchar) value->byte_at(index)) & 0xff );
769 }
770 st->print("\"");
771 }
772
773
774 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
775 assert(mirror.not_null() && fd->is_static(), "just checking");
776 if (fd->has_initial_value()) {
777 BasicType t = fd->field_type();
778 switch (t) {
779 case T_BYTE:
780 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
781 break;
782 case T_BOOLEAN:
783 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
784 break;
785 case T_CHAR:
786 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
787 break;
788 case T_SHORT:
789 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
790 break;
791 case T_INT:
792 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
793 break;
794 case T_FLOAT:
795 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
796 break;
797 case T_DOUBLE:
798 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
799 break;
800 case T_LONG:
801 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
802 break;
803 case T_OBJECT:
804 {
805 assert(fd->signature() == vmSymbols::string_signature(),
806 "just checking");
807 if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
808 // Archive the String field and update the pointer.
809 oop s = mirror()->obj_field(fd->offset());
810 oop archived_s = StringTable::create_archived_string(s, CHECK);
811 mirror()->obj_field_put(fd->offset(), archived_s);
812 } else {
813 oop string = fd->string_initial_value(CHECK);
814 mirror()->obj_field_put(fd->offset(), string);
815 }
816 }
817 break;
818 default:
819 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
820 "Illegal ConstantValue attribute in class file");
821 }
822 }
823 }
824
825
826 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
827 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
828
829 // If the offset was read from the shared archive, it was fixed up already
830 if (!k->is_shared()) {
831 if (k->is_instance_klass()) {
832 // During bootstrap, java.lang.Class wasn't loaded so static field
833 // offsets were computed without the size added it. Go back and
834 // update all the static field offsets to included the size.
835 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
836 if (fs.access_flags().is_static()) {
837 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
838 fs.set_offset(real_offset);
839 }
840 }
841 }
842 }
843
844 if (k->is_shared() && k->has_raw_archived_mirror()) {
845 if (HeapShared::open_archive_heap_region_mapped()) {
846 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
847 assert(present, "Missing archived mirror for %s", k->external_name());
848 return;
849 } else {
850 k->set_java_mirror_handle(NULL);
851 k->clear_has_raw_archived_mirror();
852 }
853 }
854 create_mirror(k, Handle(), Handle(), Handle(), CHECK);
855 }
856
857 void java_lang_Class::initialize_mirror_fields(Klass* k,
858 Handle mirror,
859 Handle protection_domain,
860 TRAPS) {
861 // Allocate a simple java object for a lock.
862 // This needs to be a java object because during class initialization
863 // it can be held across a java call.
864 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
865 set_init_lock(mirror(), r);
866
867 // Set protection domain also
868 set_protection_domain(mirror(), protection_domain());
869
870 // Initialize static fields
871 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
872 }
873
874 // Set the java.lang.Module module field in the java_lang_Class mirror
875 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
876 if (module.is_null()) {
877 // During startup, the module may be NULL only if java.base has not been defined yet.
878 // Put the class on the fixup_module_list to patch later when the java.lang.Module
879 // for java.base is known. But note that since we captured the NULL module another
880 // thread may have completed that initialization.
881
882 bool javabase_was_defined = false;
883 {
884 MutexLocker m1(Module_lock, THREAD);
885 // Keep list of classes needing java.base module fixup
886 if (!ModuleEntryTable::javabase_defined()) {
887 assert(k->java_mirror() != NULL, "Class's mirror is null");
888 k->class_loader_data()->inc_keep_alive();
889 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
890 fixup_module_field_list()->push(k);
891 } else {
892 javabase_was_defined = true;
893 }
894 }
895
896 // If java.base was already defined then patch this particular class with java.base.
897 if (javabase_was_defined) {
898 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
899 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
900 "Setting class module field, " JAVA_BASE_NAME " should be defined");
901 Handle javabase_handle(THREAD, javabase_entry->module());
902 set_module(mirror(), javabase_handle());
903 }
904 } else {
905 assert(Universe::is_module_initialized() ||
906 (ModuleEntryTable::javabase_defined() &&
907 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
908 "Incorrect java.lang.Module specification while creating mirror");
909 set_module(mirror(), module());
910 }
911 }
912
913 // Statically allocate fixup lists because they always get created.
914 void java_lang_Class::allocate_fixup_lists() {
915 GrowableArray<Klass*>* mirror_list =
916 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
917 set_fixup_mirror_list(mirror_list);
918
919 GrowableArray<Klass*>* module_list =
920 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
921 set_fixup_module_field_list(module_list);
922 }
923
924 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
925 Handle module, Handle protection_domain, TRAPS) {
926 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
927 assert(k->java_mirror() == NULL, "should only assign mirror once");
928
929 // Use this moment of initialization to cache modifier_flags also,
930 // to support Class.getModifiers(). Instance classes recalculate
931 // the cached flags after the class file is parsed, but before the
932 // class is put into the system dictionary.
933 int computed_modifiers = k->compute_modifier_flags(CHECK);
934 k->set_modifier_flags(computed_modifiers);
935 // Class_klass has to be loaded because it is used to allocate
936 // the mirror.
937 if (SystemDictionary::Class_klass_loaded()) {
938 // Allocate mirror (java.lang.Class instance)
939 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
940 Handle mirror(THREAD, mirror_oop);
941 Handle comp_mirror;
942
943 // Setup indirection from mirror->klass
944 java_lang_Class::set_klass(mirror(), k);
945
946 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
947 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
948
949 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
950
951 // It might also have a component mirror. This mirror must already exist.
952 if (k->is_array_klass()) {
953 if (k->is_typeArray_klass()) {
954 BasicType type = TypeArrayKlass::cast(k)->element_type();
955 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
956 } else {
957 assert(k->is_objArray_klass(), "Must be");
958 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
959 assert(element_klass != NULL, "Must have an element klass");
960 comp_mirror = Handle(THREAD, element_klass->java_mirror());
961 }
962 assert(comp_mirror() != NULL, "must have a mirror");
963
964 // Two-way link between the array klass and its component mirror:
965 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
966 set_component_mirror(mirror(), comp_mirror());
967 // See below for ordering dependencies between field array_klass in component mirror
968 // and java_mirror in this klass.
969 } else {
970 assert(k->is_instance_klass(), "Must be");
971
972 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
973 if (HAS_PENDING_EXCEPTION) {
974 // If any of the fields throws an exception like OOM remove the klass field
975 // from the mirror so GC doesn't follow it after the klass has been deallocated.
976 // This mirror looks like a primitive type, which logically it is because it
977 // it represents no class.
978 java_lang_Class::set_klass(mirror(), NULL);
979 return;
980 }
981 }
982
983 // set the classLoader field in the java_lang_Class instance
984 assert(class_loader() == k->class_loader(), "should be same");
985 set_class_loader(mirror(), class_loader());
986
987 // Setup indirection from klass->mirror
988 // after any exceptions can happen during allocations.
989 k->set_java_mirror(mirror);
990
991 // Set the module field in the java_lang_Class instance. This must be done
992 // after the mirror is set.
993 set_mirror_module_field(k, mirror, module, THREAD);
994
995 if (comp_mirror() != NULL) {
996 // Set after k->java_mirror() is published, because compiled code running
997 // concurrently doesn't expect a k to have a null java_mirror.
998 release_set_array_klass(comp_mirror(), k);
999 }
1000 } else {
1001 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1002 fixup_mirror_list()->push(k);
1003 }
1004 }
1005
1006 #if INCLUDE_CDS_JAVA_HEAP
1007 // Clears mirror fields. Static final fields with initial values are reloaded
1008 // from constant pool. The object identity hash is in the object header and is
1009 // not affected.
1010 class ResetMirrorField: public FieldClosure {
1011 private:
1012 Handle _m;
1013
1014 public:
1015 ResetMirrorField(Handle mirror) : _m(mirror) {}
1016
1017 void do_field(fieldDescriptor* fd) {
1018 assert(DumpSharedSpaces, "dump time only");
1019 assert(_m.not_null(), "Mirror cannot be NULL");
1020
1021 if (fd->is_static() && fd->has_initial_value()) {
1022 initialize_static_field(fd, _m, Thread::current());
1023 return;
1024 }
1025
1026 BasicType ft = fd->field_type();
1027 switch (ft) {
1028 case T_BYTE:
1029 _m()->byte_field_put(fd->offset(), 0);
1030 break;
1031 case T_CHAR:
1032 _m()->char_field_put(fd->offset(), 0);
1033 break;
1034 case T_DOUBLE:
1035 _m()->double_field_put(fd->offset(), 0);
1036 break;
1037 case T_FLOAT:
1038 _m()->float_field_put(fd->offset(), 0);
1039 break;
1040 case T_INT:
1041 _m()->int_field_put(fd->offset(), 0);
1042 break;
1043 case T_LONG:
1044 _m()->long_field_put(fd->offset(), 0);
1045 break;
1046 case T_SHORT:
1047 _m()->short_field_put(fd->offset(), 0);
1048 break;
1049 case T_BOOLEAN:
1050 _m()->bool_field_put(fd->offset(), false);
1051 break;
1052 case T_ARRAY:
1053 case T_OBJECT: {
1054 // It might be useful to cache the String field, but
1055 // for now just clear out any reference field
1056 oop o = _m()->obj_field(fd->offset());
1057 _m()->obj_field_put(fd->offset(), NULL);
1058 break;
1059 }
1060 default:
1061 ShouldNotReachHere();
1062 break;
1063 }
1064 }
1065 };
1066
1067 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1068 assert(HeapShared::is_heap_object_archiving_allowed(),
1069 "HeapShared::is_heap_object_archiving_allowed() must be true");
1070
1071 for (int t = 0; t <= T_VOID; t++) {
1072 oop m = Universe::_mirrors[t];
1073 if (m != NULL) {
1074 // Update the field at _array_klass_offset to point to the relocated array klass.
1075 oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1076 assert(archived_m != NULL, "sanity");
1077 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1078 assert(ak != NULL || t == T_VOID, "should not be NULL");
1079 if (ak != NULL) {
1080 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak, true);
1081 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1082 }
1083
1084 // Clear the fields. Just to be safe
1085 Klass *k = m->klass();
1086 Handle archived_mirror_h(THREAD, archived_m);
1087 ResetMirrorField reset(archived_mirror_h);
1088 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1089
1090 log_trace(cds, heap, mirror)(
1091 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1092 type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1093
1094 Universe::_mirrors[t] = archived_m;
1095 }
1096 }
1097
1098 assert(Universe::_mirrors[T_INT] != NULL &&
1099 Universe::_mirrors[T_FLOAT] != NULL &&
1100 Universe::_mirrors[T_DOUBLE] != NULL &&
1101 Universe::_mirrors[T_BYTE] != NULL &&
1102 Universe::_mirrors[T_BOOLEAN] != NULL &&
1103 Universe::_mirrors[T_CHAR] != NULL &&
1104 Universe::_mirrors[T_LONG] != NULL &&
1105 Universe::_mirrors[T_SHORT] != NULL &&
1106 Universe::_mirrors[T_VOID] != NULL, "sanity");
1107
1108 Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1109 Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1110 Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1111 Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1112 Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1113 Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1114 Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1115 Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1116 Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1117 }
1118
1119 //
1120 // After the mirror object is successfully archived, the archived
1121 // klass is set with _has_archived_raw_mirror flag.
1122 //
1123 // The _has_archived_raw_mirror flag is cleared at runtime when the
1124 // archived mirror is restored. If archived java heap data cannot
1125 // be used at runtime, new mirror object is created for the shared
1126 // class. The _has_archived_raw_mirror is cleared also during the process.
1127 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1128 assert(HeapShared::is_heap_object_archiving_allowed(),
1129 "HeapShared::is_heap_object_archiving_allowed() must be true");
1130
1131 // Mirror is already archived
1132 if (k->has_raw_archived_mirror()) {
1133 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1134 return k->archived_java_mirror_raw();
1135 }
1136
1137 // No mirror
1138 oop mirror = k->java_mirror();
1139 if (mirror == NULL) {
1140 return NULL;
1141 }
1142
1143 if (k->is_instance_klass()) {
1144 InstanceKlass *ik = InstanceKlass::cast(k);
1145 assert(ik->signers() == NULL, "class with signer should have been excluded");
1146
1147 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1148 ik->is_shared_app_class())) {
1149 // Archiving mirror for classes from non-builtin loaders is not
1150 // supported. Clear the _java_mirror within the archived class.
1151 k->set_java_mirror_handle(NULL);
1152 return NULL;
1153 }
1154 }
1155
1156 // Now start archiving the mirror object
1157 oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1158 if (archived_mirror == NULL) {
1159 return NULL;
1160 }
1161
1162 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1163 if (archived_mirror == NULL) {
1164 return NULL;
1165 }
1166
1167 k->set_archived_java_mirror_raw(archived_mirror);
1168
1169 k->set_has_raw_archived_mirror();
1170
1171 ResourceMark rm;
1172 log_trace(cds, heap, mirror)(
1173 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1174 k->external_name(), p2i(mirror), p2i(archived_mirror));
1175
1176 return archived_mirror;
1177 }
1178
1179 // The process is based on create_mirror().
1180 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1181 oop archived_mirror,
1182 Thread *THREAD) {
1183 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1184 // to archived metadata and objects below.
1185 Klass *c = archived_mirror->klass();
1186 Handle archived_mirror_h(THREAD, archived_mirror);
1187 ResetMirrorField reset(archived_mirror_h);
1188 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1189
1190 if (k->is_array_klass()) {
1191 oop archived_comp_mirror;
1192 if (k->is_typeArray_klass()) {
1193 // The primitive type mirrors are already archived. Get the archived mirror.
1194 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1195 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1196 assert(archived_comp_mirror != NULL, "Must be");
1197 } else {
1198 assert(k->is_objArray_klass(), "Must be");
1199 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1200 assert(element_klass != NULL, "Must have an element klass");
1201 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1202 if (archived_comp_mirror == NULL) {
1203 return NULL;
1204 }
1205 }
1206 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1207 } else {
1208 assert(k->is_instance_klass(), "Must be");
1209
1210 // Reset local static fields in the mirror
1211 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1212
1213 java_lang_Class:set_init_lock(archived_mirror, NULL);
1214
1215 set_protection_domain(archived_mirror, NULL);
1216 }
1217
1218 // clear class loader and mirror_module_field
1219 set_class_loader(archived_mirror, NULL);
1220 set_module(archived_mirror, NULL);
1221
1222 // The archived mirror's field at _klass_offset is still pointing to the original
1223 // klass. Updated the field in the archived mirror to point to the relocated
1224 // klass in the archive.
1225 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror), true);
1226 log_debug(cds, heap, mirror)(
1227 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1228 p2i(as_Klass(mirror)), p2i(reloc_k));
1229 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1230
1231 // The field at _array_klass_offset is pointing to the original one dimension
1232 // higher array klass if exists. Relocate the pointer.
1233 Klass *arr = array_klass_acquire(mirror);
1234 if (arr != NULL) {
1235 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr, true);
1236 log_debug(cds, heap, mirror)(
1237 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1238 p2i(arr), p2i(reloc_arr));
1239 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1240 }
1241 return archived_mirror;
1242 }
1243
1244 void java_lang_Class::update_archived_primitive_mirror_native_pointers(oop archived_mirror) {
1245 if (MetaspaceShared::relocation_delta() != 0) {
1246 assert(archived_mirror->metadata_field(_klass_offset) == NULL, "must be for primitive class");
1247
1248 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1249 if (ak != NULL) {
1250 archived_mirror->metadata_field_put(_array_klass_offset,
1251 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1252 }
1253 }
1254 }
1255
1256 void java_lang_Class::update_archived_mirror_native_pointers(oop archived_mirror) {
1257 if (MetaspaceShared::relocation_delta() != 0) {
1258 Klass* k = ((Klass*)archived_mirror->metadata_field(_klass_offset));
1259 archived_mirror->metadata_field_put(_klass_offset,
1260 (Klass*)(address(k) + MetaspaceShared::relocation_delta()));
1261
1262 Klass* ak = ((Klass*)archived_mirror->metadata_field(_array_klass_offset));
1263 if (ak != NULL) {
1264 archived_mirror->metadata_field_put(_array_klass_offset,
1265 (Klass*)(address(ak) + MetaspaceShared::relocation_delta()));
1266 }
1267 }
1268 }
1269
1270
1271 // Returns true if the mirror is updated, false if no archived mirror
1272 // data is present. After the archived mirror object is restored, the
1273 // shared klass' _has_raw_archived_mirror flag is cleared.
1274 bool java_lang_Class::restore_archived_mirror(Klass *k,
1275 Handle class_loader, Handle module,
1276 Handle protection_domain, TRAPS) {
1277 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1278 // see more details in SystemDictionary::resolve_well_known_classes().
1279 if (!SystemDictionary::Class_klass_loaded()) {
1280 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1281 fixup_mirror_list()->push(k);
1282 return true;
1283 }
1284
1285 oop m = HeapShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1286 if (m == NULL) {
1287 return false;
1288 }
1289
1290 // mirror is archived, restore
1291 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1292 assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1293 update_archived_mirror_native_pointers(m);
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 ResourceMark rm;
1320 log_trace(cds, heap, mirror)(
1321 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1322
1323 return true;
1324 }
1325 #endif // INCLUDE_CDS_JAVA_HEAP
1326
1327 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1328 assert(_module_offset != 0, "must have been computed already");
1329 java_lang_Class::set_module(k->java_mirror(), module());
1330 }
1331
1332 int java_lang_Class::oop_size(oop java_class) {
1333 assert(_oop_size_offset != 0, "must be set");
1334 int size = java_class->int_field(_oop_size_offset);
1335 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1336 return size;
1337 }
1338
1339
1340 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1341 assert(_oop_size_offset != 0, "must be set");
1342 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1343 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1344 }
1345
1346 int java_lang_Class::static_oop_field_count(oop java_class) {
1347 assert(_static_oop_field_count_offset != 0, "must be set");
1348 return java_class->int_field(_static_oop_field_count_offset);
1349 }
1350
1351 int java_lang_Class::static_oop_field_count_raw(oop java_class) {
1352 assert(_static_oop_field_count_offset != 0, "must be set");
1353 return java_class->int_field_raw(_static_oop_field_count_offset);
1354 }
1355
1356 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1357 assert(_static_oop_field_count_offset != 0, "must be set");
1358 java_class->int_field_put(_static_oop_field_count_offset, size);
1359 }
1360
1361 oop java_lang_Class::protection_domain(oop java_class) {
1362 assert(_protection_domain_offset != 0, "must be set");
1363 return java_class->obj_field(_protection_domain_offset);
1364 }
1365 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1366 assert(_protection_domain_offset != 0, "must be set");
1367 java_class->obj_field_put(_protection_domain_offset, pd);
1368 }
1369
1370 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1371 assert(_component_mirror_offset != 0, "must be set");
1372 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1373 }
1374 oop java_lang_Class::component_mirror(oop java_class) {
1375 assert(_component_mirror_offset != 0, "must be set");
1376 return java_class->obj_field(_component_mirror_offset);
1377 }
1378
1379 oop java_lang_Class::init_lock(oop java_class) {
1380 assert(_init_lock_offset != 0, "must be set");
1381 return java_class->obj_field(_init_lock_offset);
1382 }
1383 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1384 assert(_init_lock_offset != 0, "must be set");
1385 java_class->obj_field_put(_init_lock_offset, init_lock);
1386 }
1387
1388 objArrayOop java_lang_Class::signers(oop java_class) {
1389 assert(_signers_offset != 0, "must be set");
1390 return (objArrayOop)java_class->obj_field(_signers_offset);
1391 }
1392 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1393 assert(_signers_offset != 0, "must be set");
1394 java_class->obj_field_put(_signers_offset, (oop)signers);
1395 }
1396
1397
1398 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1399 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
1400 if (_class_loader_offset != 0) {
1401 java_class->obj_field_put(_class_loader_offset, loader);
1402 }
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_0);
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 if (classRedefinedCount_offset == -1) {
1634 // If we don't have an offset for it then just return -1 as a marker.
1635 return -1;
1636 }
1637
1638 return the_class_mirror->int_field(classRedefinedCount_offset);
1639 }
1640
1641 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1642 if (classRedefinedCount_offset == -1) {
1643 // If we don't have an offset for it then nothing to set.
1644 return;
1645 }
1646
1647 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1648 }
1649
1650
1651 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1652 // platform thread structure, and a eetop offset which was used for thread
1653 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1654 // merged, so in the HotSpot VM we just use the eetop field for the thread
1655 // instead of the privateInfo_offset.
1656 //
1657 // Note: The stackSize field is only present starting in 1.4.
1658
1659 int java_lang_Thread::_name_offset = 0;
1660 int java_lang_Thread::_group_offset = 0;
1661 int java_lang_Thread::_contextClassLoader_offset = 0;
1662 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1663 int java_lang_Thread::_priority_offset = 0;
1664 int java_lang_Thread::_eetop_offset = 0;
1665 int java_lang_Thread::_interrupted_offset = 0;
1666 int java_lang_Thread::_daemon_offset = 0;
1667 int java_lang_Thread::_stillborn_offset = 0;
1668 int java_lang_Thread::_stackSize_offset = 0;
1669 int java_lang_Thread::_tid_offset = 0;
1670 int java_lang_Thread::_thread_status_offset = 0;
1671 int java_lang_Thread::_park_blocker_offset = 0;
1672
1673 #define THREAD_FIELDS_DO(macro) \
1674 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1675 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1676 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1677 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1678 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1679 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1680 macro(_eetop_offset, k, "eetop", long_signature, false); \
1681 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \
1682 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1683 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1684 macro(_tid_offset, k, "tid", long_signature, false); \
1685 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1686 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1687
1688 void java_lang_Thread::compute_offsets() {
1689 assert(_group_offset == 0, "offsets should be initialized only once");
1690
1691 InstanceKlass* k = SystemDictionary::Thread_klass();
1692 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1693 }
1694
1695 #if INCLUDE_CDS
1696 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1697 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1698 }
1699 #endif
1700
1701 JavaThread* java_lang_Thread::thread(oop java_thread) {
1702 return (JavaThread*)java_thread->address_field(_eetop_offset);
1703 }
1704
1705
1706 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1707 java_thread->address_field_put(_eetop_offset, (address)thread);
1708 }
1709
1710 bool java_lang_Thread::interrupted(oop java_thread) {
1711 // Make sure the caller can safely access oops.
1712 assert(Thread::current()->is_VM_thread() ||
1713 (JavaThread::current()->thread_state() != _thread_blocked &&
1714 JavaThread::current()->thread_state() != _thread_in_native),
1715 "Unsafe access to oop");
1716 return java_thread->bool_field_volatile(_interrupted_offset);
1717 }
1718
1719 void java_lang_Thread::set_interrupted(oop java_thread, bool val) {
1720 // Make sure the caller can safely access oops.
1721 assert(Thread::current()->is_VM_thread() ||
1722 (JavaThread::current()->thread_state() != _thread_blocked &&
1723 JavaThread::current()->thread_state() != _thread_in_native),
1724 "Unsafe access to oop");
1725 java_thread->bool_field_put_volatile(_interrupted_offset, val);
1726 }
1727
1728
1729 oop java_lang_Thread::name(oop java_thread) {
1730 return java_thread->obj_field(_name_offset);
1731 }
1732
1733
1734 void java_lang_Thread::set_name(oop java_thread, oop name) {
1735 java_thread->obj_field_put(_name_offset, name);
1736 }
1737
1738
1739 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1740 return (ThreadPriority)java_thread->int_field(_priority_offset);
1741 }
1742
1743
1744 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1745 java_thread->int_field_put(_priority_offset, priority);
1746 }
1747
1748
1749 oop java_lang_Thread::threadGroup(oop java_thread) {
1750 return java_thread->obj_field(_group_offset);
1751 }
1752
1753
1754 bool java_lang_Thread::is_stillborn(oop java_thread) {
1755 return java_thread->bool_field(_stillborn_offset) != 0;
1756 }
1757
1758
1759 // We never have reason to turn the stillborn bit off
1760 void java_lang_Thread::set_stillborn(oop java_thread) {
1761 java_thread->bool_field_put(_stillborn_offset, true);
1762 }
1763
1764
1765 bool java_lang_Thread::is_alive(oop java_thread) {
1766 JavaThread* thr = java_lang_Thread::thread(java_thread);
1767 return (thr != NULL);
1768 }
1769
1770
1771 bool java_lang_Thread::is_daemon(oop java_thread) {
1772 return java_thread->bool_field(_daemon_offset) != 0;
1773 }
1774
1775
1776 void java_lang_Thread::set_daemon(oop java_thread) {
1777 java_thread->bool_field_put(_daemon_offset, true);
1778 }
1779
1780 oop java_lang_Thread::context_class_loader(oop java_thread) {
1781 return java_thread->obj_field(_contextClassLoader_offset);
1782 }
1783
1784 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1785 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1786 }
1787
1788
1789 jlong java_lang_Thread::stackSize(oop java_thread) {
1790 return java_thread->long_field(_stackSize_offset);
1791 }
1792
1793 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1794 void java_lang_Thread::set_thread_status(oop java_thread,
1795 java_lang_Thread::ThreadStatus status) {
1796 java_thread->int_field_put(_thread_status_offset, status);
1797 }
1798
1799 // Read thread status value from threadStatus field in java.lang.Thread java class.
1800 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1801 // Make sure the caller is operating on behalf of the VM or is
1802 // running VM code (state == _thread_in_vm).
1803 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1804 JavaThread::current()->thread_state() == _thread_in_vm,
1805 "Java Thread is not running in vm");
1806 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1807 }
1808
1809
1810 jlong java_lang_Thread::thread_id(oop java_thread) {
1811 return java_thread->long_field(_tid_offset);
1812 }
1813
1814 oop java_lang_Thread::park_blocker(oop java_thread) {
1815 return java_thread->obj_field(_park_blocker_offset);
1816 }
1817
1818 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1819 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1820 switch (status) {
1821 case NEW : return "NEW";
1822 case RUNNABLE : return "RUNNABLE";
1823 case SLEEPING : return "TIMED_WAITING (sleeping)";
1824 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1825 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1826 case PARKED : return "WAITING (parking)";
1827 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1828 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1829 case TERMINATED : return "TERMINATED";
1830 default : return "UNKNOWN";
1831 };
1832 }
1833 int java_lang_ThreadGroup::_parent_offset = 0;
1834 int java_lang_ThreadGroup::_name_offset = 0;
1835 int java_lang_ThreadGroup::_threads_offset = 0;
1836 int java_lang_ThreadGroup::_groups_offset = 0;
1837 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1838 int java_lang_ThreadGroup::_destroyed_offset = 0;
1839 int java_lang_ThreadGroup::_daemon_offset = 0;
1840 int java_lang_ThreadGroup::_nthreads_offset = 0;
1841 int java_lang_ThreadGroup::_ngroups_offset = 0;
1842
1843 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1844 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1845 return java_thread_group->obj_field(_parent_offset);
1846 }
1847
1848 // ("name as oop" accessor is not necessary)
1849
1850 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1851 oop name = java_thread_group->obj_field(_name_offset);
1852 // ThreadGroup.name can be null
1853 if (name != NULL) {
1854 return java_lang_String::as_utf8_string(name);
1855 }
1856 return NULL;
1857 }
1858
1859 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1860 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1861 return java_thread_group->int_field(_nthreads_offset);
1862 }
1863
1864 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1865 oop threads = java_thread_group->obj_field(_threads_offset);
1866 assert(threads != NULL, "threadgroups should have threads");
1867 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1868 return objArrayOop(threads);
1869 }
1870
1871 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1872 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1873 return java_thread_group->int_field(_ngroups_offset);
1874 }
1875
1876 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1877 oop groups = java_thread_group->obj_field(_groups_offset);
1878 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1879 return objArrayOop(groups);
1880 }
1881
1882 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1883 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1884 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1885 }
1886
1887 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1888 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1889 return java_thread_group->bool_field(_destroyed_offset) != 0;
1890 }
1891
1892 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1893 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1894 return java_thread_group->bool_field(_daemon_offset) != 0;
1895 }
1896
1897 #define THREADGROUP_FIELDS_DO(macro) \
1898 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1899 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1900 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1901 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1902 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1903 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1904 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1905 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1906 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1907
1908 void java_lang_ThreadGroup::compute_offsets() {
1909 assert(_parent_offset == 0, "offsets should be initialized only once");
1910
1911 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1912 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1913 }
1914
1915 #if INCLUDE_CDS
1916 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1917 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1918 }
1919 #endif
1920
1921 #define THROWABLE_FIELDS_DO(macro) \
1922 macro(backtrace_offset, k, "backtrace", object_signature, false); \
1923 macro(detailMessage_offset, k, "detailMessage", string_signature, false); \
1924 macro(stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1925 macro(depth_offset, k, "depth", int_signature, false); \
1926 macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1927
1928 void java_lang_Throwable::compute_offsets() {
1929 InstanceKlass* k = SystemDictionary::Throwable_klass();
1930 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1931 }
1932
1933 #if INCLUDE_CDS
1934 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1935 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1936 }
1937 #endif
1938
1939 oop java_lang_Throwable::unassigned_stacktrace() {
1940 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1941 oop base = ik->static_field_base_raw();
1942 return base->obj_field(static_unassigned_stacktrace_offset);
1943 }
1944
1945 oop java_lang_Throwable::backtrace(oop throwable) {
1946 return throwable->obj_field_acquire(backtrace_offset);
1947 }
1948
1949
1950 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1951 throwable->release_obj_field_put(backtrace_offset, value);
1952 }
1953
1954 int java_lang_Throwable::depth(oop throwable) {
1955 return throwable->int_field(depth_offset);
1956 }
1957
1958 void java_lang_Throwable::set_depth(oop throwable, int value) {
1959 throwable->int_field_put(depth_offset, value);
1960 }
1961
1962 oop java_lang_Throwable::message(oop throwable) {
1963 return throwable->obj_field(detailMessage_offset);
1964 }
1965
1966
1967 // Return Symbol for detailed_message or NULL
1968 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1969 PRESERVE_EXCEPTION_MARK; // Keep original exception
1970 oop detailed_message = java_lang_Throwable::message(throwable);
1971 if (detailed_message != NULL) {
1972 return java_lang_String::as_symbol(detailed_message);
1973 }
1974 return NULL;
1975 }
1976
1977 void java_lang_Throwable::set_message(oop throwable, oop value) {
1978 throwable->obj_field_put(detailMessage_offset, value);
1979 }
1980
1981
1982 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1983 throwable->obj_field_put(stackTrace_offset, st_element_array);
1984 }
1985
1986 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1987 set_stacktrace(throwable, NULL);
1988 }
1989
1990
1991 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1992 ResourceMark rm;
1993 Klass* k = throwable->klass();
1994 assert(k != NULL, "just checking");
1995 st->print("%s", k->external_name());
1996 oop msg = message(throwable);
1997 if (msg != NULL) {
1998 st->print(": %s", java_lang_String::as_utf8_string(msg));
1999 }
2000 }
2001
2002 // After this many redefines, the stack trace is unreliable.
2003 const int MAX_VERSION = USHRT_MAX;
2004
2005 static inline bool version_matches(Method* method, int version) {
2006 assert(version < MAX_VERSION, "version is too big");
2007 return method != NULL && (method->constants()->version() == version);
2008 }
2009
2010 // This class provides a simple wrapper over the internal structure of
2011 // exception backtrace to insulate users of the backtrace from needing
2012 // to know what it looks like.
2013 // The code of this class is not GC safe. Allocations can only happen
2014 // in expand().
2015 class BacktraceBuilder: public StackObj {
2016 friend class BacktraceIterator;
2017 private:
2018 Handle _backtrace;
2019 objArrayOop _head;
2020 typeArrayOop _methods;
2021 typeArrayOop _bcis;
2022 objArrayOop _mirrors;
2023 typeArrayOop _names; // Needed to insulate method name against redefinition.
2024 // This is set to a java.lang.Boolean(true) if the top frame
2025 // of the backtrace is omitted because it shall be hidden.
2026 // Else it is null.
2027 oop _has_hidden_top_frame;
2028 int _index;
2029 NoSafepointVerifier _nsv;
2030
2031 enum {
2032 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2033 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2034 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2035 trace_names_offset = java_lang_Throwable::trace_names_offset,
2036 trace_next_offset = java_lang_Throwable::trace_next_offset,
2037 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2038 trace_size = java_lang_Throwable::trace_size,
2039 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2040 };
2041
2042 // get info out of chunks
2043 static typeArrayOop get_methods(objArrayHandle chunk) {
2044 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2045 assert(methods != NULL, "method array should be initialized in backtrace");
2046 return methods;
2047 }
2048 static typeArrayOop get_bcis(objArrayHandle chunk) {
2049 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2050 assert(bcis != NULL, "bci array should be initialized in backtrace");
2051 return bcis;
2052 }
2053 static objArrayOop get_mirrors(objArrayHandle chunk) {
2054 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2055 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2056 return mirrors;
2057 }
2058 static typeArrayOop get_names(objArrayHandle chunk) {
2059 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2060 assert(names != NULL, "names array should be initialized in backtrace");
2061 return names;
2062 }
2063 static oop get_has_hidden_top_frame(objArrayHandle chunk) {
2064 oop hidden = chunk->obj_at(trace_hidden_offset);
2065 return hidden;
2066 }
2067
2068 public:
2069
2070 // constructor for new backtrace
2071 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(NULL) {
2072 expand(CHECK);
2073 _backtrace = Handle(THREAD, _head);
2074 _index = 0;
2075 }
2076
2077 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2078 _methods = get_methods(backtrace);
2079 _bcis = get_bcis(backtrace);
2080 _mirrors = get_mirrors(backtrace);
2081 _names = get_names(backtrace);
2082 _has_hidden_top_frame = get_has_hidden_top_frame(backtrace);
2083 assert(_methods->length() == _bcis->length() &&
2084 _methods->length() == _mirrors->length() &&
2085 _mirrors->length() == _names->length(),
2086 "method and source information arrays should match");
2087
2088 // head is the preallocated backtrace
2089 _head = backtrace();
2090 _backtrace = Handle(thread, _head);
2091 _index = 0;
2092 }
2093
2094 void expand(TRAPS) {
2095 objArrayHandle old_head(THREAD, _head);
2096 PauseNoSafepointVerifier pnsv(&_nsv);
2097
2098 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2099 objArrayHandle new_head(THREAD, head);
2100
2101 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2102 typeArrayHandle new_methods(THREAD, methods);
2103
2104 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2105 typeArrayHandle new_bcis(THREAD, bcis);
2106
2107 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2108 objArrayHandle new_mirrors(THREAD, mirrors);
2109
2110 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2111 typeArrayHandle new_names(THREAD, names);
2112
2113 if (!old_head.is_null()) {
2114 old_head->obj_at_put(trace_next_offset, new_head());
2115 }
2116 new_head->obj_at_put(trace_methods_offset, new_methods());
2117 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2118 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2119 new_head->obj_at_put(trace_names_offset, new_names());
2120 new_head->obj_at_put(trace_hidden_offset, NULL);
2121
2122 _head = new_head();
2123 _methods = new_methods();
2124 _bcis = new_bcis();
2125 _mirrors = new_mirrors();
2126 _names = new_names();
2127 _index = 0;
2128 }
2129
2130 oop backtrace() {
2131 return _backtrace();
2132 }
2133
2134 inline void push(Method* method, int bci, TRAPS) {
2135 // Smear the -1 bci to 0 since the array only holds unsigned
2136 // shorts. The later line number lookup would just smear the -1
2137 // to a 0 even if it could be recorded.
2138 if (bci == SynchronizationEntryBCI) bci = 0;
2139
2140 if (_index >= trace_chunk_size) {
2141 methodHandle mhandle(THREAD, method);
2142 expand(CHECK);
2143 method = mhandle();
2144 }
2145
2146 _methods->ushort_at_put(_index, method->orig_method_idnum());
2147 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2148
2149 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2150 // klass owning the symbols alive so their refcounts aren't decremented.
2151 Symbol* name = method->name();
2152 _names->symbol_at_put(_index, name);
2153
2154 // We need to save the mirrors in the backtrace to keep the class
2155 // from being unloaded while we still have this stack trace.
2156 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2157 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2158 _index++;
2159 }
2160
2161 void set_has_hidden_top_frame(TRAPS) {
2162 if (_has_hidden_top_frame == NULL) {
2163 // It would be nice to add java/lang/Boolean::TRUE here
2164 // to indicate that this backtrace has a hidden top frame.
2165 // But this code is used before TRUE is allocated.
2166 // Therefor let's just use an arbitrary legal oop
2167 // available right here. We only test for != null
2168 // anyways. _methods is a short[].
2169 assert(_methods != NULL, "we need a legal oop");
2170 _has_hidden_top_frame = _methods;
2171 _head->obj_at_put(trace_hidden_offset, _has_hidden_top_frame);
2172 }
2173 }
2174
2175 };
2176
2177 struct BacktraceElement : public StackObj {
2178 int _method_id;
2179 int _bci;
2180 int _version;
2181 Symbol* _name;
2182 Handle _mirror;
2183 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2184 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2185 };
2186
2187 class BacktraceIterator : public StackObj {
2188 int _index;
2189 objArrayHandle _result;
2190 objArrayHandle _mirrors;
2191 typeArrayHandle _methods;
2192 typeArrayHandle _bcis;
2193 typeArrayHandle _names;
2194
2195 void init(objArrayHandle result, Thread* thread) {
2196 // Get method id, bci, version and mirror from chunk
2197 _result = result;
2198 if (_result.not_null()) {
2199 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2200 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2201 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2202 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2203 _index = 0;
2204 }
2205 }
2206 public:
2207 BacktraceIterator(objArrayHandle result, Thread* thread) {
2208 init(result, thread);
2209 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2210 }
2211
2212 BacktraceElement next(Thread* thread) {
2213 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2214 _methods->ushort_at(_index),
2215 Backtrace::version_at(_bcis->int_at(_index)),
2216 Backtrace::bci_at(_bcis->int_at(_index)),
2217 _names->symbol_at(_index));
2218 _index++;
2219
2220 if (_index >= java_lang_Throwable::trace_chunk_size) {
2221 int next_offset = java_lang_Throwable::trace_next_offset;
2222 // Get next chunk
2223 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2224 init(result, thread);
2225 }
2226 return e;
2227 }
2228
2229 bool repeat() {
2230 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2231 }
2232 };
2233
2234
2235 // Print stack trace element to resource allocated buffer
2236 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2237 int version, int bci, Symbol* name) {
2238 ResourceMark rm;
2239
2240 // Get strings and string lengths
2241 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2242 const char* klass_name = holder->external_name();
2243 int buf_len = (int)strlen(klass_name);
2244
2245 char* method_name = name->as_C_string();
2246 buf_len += (int)strlen(method_name);
2247
2248 char* source_file_name = NULL;
2249 Symbol* source = Backtrace::get_source_file_name(holder, version);
2250 if (source != NULL) {
2251 source_file_name = source->as_C_string();
2252 buf_len += (int)strlen(source_file_name);
2253 }
2254
2255 char *module_name = NULL, *module_version = NULL;
2256 ModuleEntry* module = holder->module();
2257 if (module->is_named()) {
2258 module_name = module->name()->as_C_string();
2259 buf_len += (int)strlen(module_name);
2260 if (module->version() != NULL) {
2261 module_version = module->version()->as_C_string();
2262 buf_len += (int)strlen(module_version);
2263 }
2264 }
2265
2266 // Allocate temporary buffer with extra space for formatting and line number
2267 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2268
2269 // Print stack trace line in buffer
2270 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2271
2272 // Print module information
2273 if (module_name != NULL) {
2274 if (module_version != NULL) {
2275 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2276 } else {
2277 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2278 }
2279 }
2280
2281 // The method can be NULL if the requested class version is gone
2282 Method* method = holder->method_with_orig_idnum(method_id, version);
2283 if (!version_matches(method, version)) {
2284 strcat(buf, "Redefined)");
2285 } else {
2286 int line_number = Backtrace::get_line_number(method, bci);
2287 if (line_number == -2) {
2288 strcat(buf, "Native Method)");
2289 } else {
2290 if (source_file_name != NULL && (line_number != -1)) {
2291 // Sourcename and linenumber
2292 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2293 } else if (source_file_name != NULL) {
2294 // Just sourcename
2295 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2296 } else {
2297 // Neither sourcename nor linenumber
2298 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2299 }
2300 CompiledMethod* nm = method->code();
2301 if (WizardMode && nm != NULL) {
2302 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2303 }
2304 }
2305 }
2306
2307 st->print_cr("%s", buf);
2308 }
2309
2310 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2311 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2312 int method_id = method->orig_method_idnum();
2313 int version = method->constants()->version();
2314 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2315 }
2316
2317 /**
2318 * Print the throwable message and its stack trace plus all causes by walking the
2319 * cause chain. The output looks the same as of Throwable.printStackTrace().
2320 */
2321 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2322 // First, print the message.
2323 print(throwable(), st);
2324 st->cr();
2325
2326 // Now print the stack trace.
2327 Thread* THREAD = Thread::current();
2328 while (throwable.not_null()) {
2329 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2330 if (result.is_null()) {
2331 st->print_raw_cr("\t<<no stack trace available>>");
2332 return;
2333 }
2334 BacktraceIterator iter(result, THREAD);
2335
2336 while (iter.repeat()) {
2337 BacktraceElement bte = iter.next(THREAD);
2338 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2339 }
2340 {
2341 // Call getCause() which doesn't necessarily return the _cause field.
2342 EXCEPTION_MARK;
2343 JavaValue cause(T_OBJECT);
2344 JavaCalls::call_virtual(&cause,
2345 throwable,
2346 throwable->klass(),
2347 vmSymbols::getCause_name(),
2348 vmSymbols::void_throwable_signature(),
2349 THREAD);
2350 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2351 if (HAS_PENDING_EXCEPTION) {
2352 CLEAR_PENDING_EXCEPTION;
2353 throwable = Handle();
2354 } else {
2355 throwable = Handle(THREAD, (oop) cause.get_jobject());
2356 if (throwable.not_null()) {
2357 st->print("Caused by: ");
2358 print(throwable(), st);
2359 st->cr();
2360 }
2361 }
2362 }
2363 }
2364 }
2365
2366 /**
2367 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2368 */
2369 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2370 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2371 JavaValue result(T_VOID);
2372 JavaCalls::call_virtual(&result,
2373 throwable,
2374 SystemDictionary::Throwable_klass(),
2375 vmSymbols::printStackTrace_name(),
2376 vmSymbols::void_method_signature(),
2377 THREAD);
2378 }
2379
2380 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2381 if (!StackTraceInThrowable) return;
2382 ResourceMark rm(THREAD);
2383
2384 // Start out by clearing the backtrace for this object, in case the VM
2385 // runs out of memory while allocating the stack trace
2386 set_backtrace(throwable(), NULL);
2387 // Clear lazily constructed Java level stacktrace if refilling occurs
2388 // This is unnecessary in 1.7+ but harmless
2389 clear_stacktrace(throwable());
2390
2391 int max_depth = MaxJavaStackTraceDepth;
2392 JavaThread* thread = (JavaThread*)THREAD;
2393
2394 BacktraceBuilder bt(CHECK);
2395
2396 // If there is no Java frame just return the method that was being called
2397 // with bci 0
2398 if (!thread->has_last_Java_frame()) {
2399 if (max_depth >= 1 && method() != NULL) {
2400 bt.push(method(), 0, CHECK);
2401 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2402 set_depth(throwable(), 1);
2403 set_backtrace(throwable(), bt.backtrace());
2404 }
2405 return;
2406 }
2407
2408 // Instead of using vframe directly, this version of fill_in_stack_trace
2409 // basically handles everything by hand. This significantly improved the
2410 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2411 // See bug 6333838 for more details.
2412 // The "ASSERT" here is to verify this method generates the exactly same stack
2413 // trace as utilizing vframe.
2414 #ifdef ASSERT
2415 vframeStream st(thread);
2416 #endif
2417 int total_count = 0;
2418 RegisterMap map(thread, false);
2419 int decode_offset = 0;
2420 CompiledMethod* nm = NULL;
2421 bool skip_fillInStackTrace_check = false;
2422 bool skip_throwableInit_check = false;
2423 bool skip_hidden = !ShowHiddenFrames;
2424
2425 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2426 Method* method = NULL;
2427 int bci = 0;
2428
2429 // Compiled java method case.
2430 if (decode_offset != 0) {
2431 DebugInfoReadStream stream(nm, decode_offset);
2432 decode_offset = stream.read_int();
2433 method = (Method*)nm->metadata_at(stream.read_int());
2434 bci = stream.read_bci();
2435 } else {
2436 if (fr.is_first_frame()) break;
2437 address pc = fr.pc();
2438 if (fr.is_interpreted_frame()) {
2439 address bcp = fr.interpreter_frame_bcp();
2440 method = fr.interpreter_frame_method();
2441 bci = method->bci_from(bcp);
2442 fr = fr.sender(&map);
2443 } else {
2444 CodeBlob* cb = fr.cb();
2445 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2446 // but non nmethod
2447 fr = fr.sender(&map);
2448 if (cb == NULL || !cb->is_compiled()) {
2449 continue;
2450 }
2451 nm = cb->as_compiled_method();
2452 if (nm->method()->is_native()) {
2453 method = nm->method();
2454 bci = 0;
2455 } else {
2456 PcDesc* pd = nm->pc_desc_at(pc);
2457 decode_offset = pd->scope_decode_offset();
2458 // if decode_offset is not equal to 0, it will execute the
2459 // "compiled java method case" at the beginning of the loop.
2460 continue;
2461 }
2462 }
2463 }
2464 #ifdef ASSERT
2465 assert(st.method() == method && st.bci() == bci,
2466 "Wrong stack trace");
2467 st.next();
2468 #endif
2469
2470 // the format of the stacktrace will be:
2471 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2472 // - 0 or more <init> methods for the exception class (skipped)
2473 // - rest of the stack
2474
2475 if (!skip_fillInStackTrace_check) {
2476 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2477 throwable->is_a(method->method_holder())) {
2478 continue;
2479 }
2480 else {
2481 skip_fillInStackTrace_check = true; // gone past them all
2482 }
2483 }
2484 if (!skip_throwableInit_check) {
2485 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2486
2487 // skip <init> methods of the exception class and superclasses
2488 // This is simlar to classic VM.
2489 if (method->name() == vmSymbols::object_initializer_name() &&
2490 throwable->is_a(method->method_holder())) {
2491 continue;
2492 } else {
2493 // there are none or we've seen them all - either way stop checking
2494 skip_throwableInit_check = true;
2495 }
2496 }
2497 if (method->is_hidden()) {
2498 if (skip_hidden) {
2499 if (total_count == 0) {
2500 // The top frame will be hidden from the stack trace.
2501 bt.set_has_hidden_top_frame(CHECK);
2502 }
2503 continue;
2504 }
2505 }
2506 bt.push(method, bci, CHECK);
2507 total_count++;
2508 }
2509
2510 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2511
2512 // Put completed stack trace into throwable object
2513 set_backtrace(throwable(), bt.backtrace());
2514 set_depth(throwable(), total_count);
2515 }
2516
2517 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2518 // No-op if stack trace is disabled
2519 if (!StackTraceInThrowable) {
2520 return;
2521 }
2522
2523 // Disable stack traces for some preallocated out of memory errors
2524 if (!Universe::should_fill_in_stack_trace(throwable)) {
2525 return;
2526 }
2527
2528 PRESERVE_EXCEPTION_MARK;
2529
2530 JavaThread* thread = JavaThread::active();
2531 fill_in_stack_trace(throwable, method, thread);
2532 // ignore exceptions thrown during stack trace filling
2533 CLEAR_PENDING_EXCEPTION;
2534 }
2535
2536 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2537 // Allocate stack trace - backtrace is created but not filled in
2538
2539 // No-op if stack trace is disabled
2540 if (!StackTraceInThrowable) return;
2541 BacktraceBuilder bt(CHECK); // creates a backtrace
2542 set_backtrace(throwable(), bt.backtrace());
2543 }
2544
2545
2546 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2547 // Fill in stack trace into preallocated backtrace (no GC)
2548
2549 // No-op if stack trace is disabled
2550 if (!StackTraceInThrowable) return;
2551
2552 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2553
2554 JavaThread* THREAD = JavaThread::current();
2555
2556 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2557 assert(backtrace.not_null(), "backtrace should have been preallocated");
2558
2559 ResourceMark rm(THREAD);
2560 vframeStream st(THREAD);
2561
2562 BacktraceBuilder bt(THREAD, backtrace);
2563
2564 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2565 // methods as preallocated errors aren't created by "java" code.
2566
2567 // fill in as much stack trace as possible
2568 int chunk_count = 0;
2569 for (;!st.at_end(); st.next()) {
2570 bt.push(st.method(), st.bci(), CHECK);
2571 chunk_count++;
2572
2573 // Bail-out for deep stacks
2574 if (chunk_count >= trace_chunk_size) break;
2575 }
2576 set_depth(throwable(), chunk_count);
2577 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2578
2579 // We support the Throwable immutability protocol defined for Java 7.
2580 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2581 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2582 }
2583
2584 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2585 objArrayHandle stack_trace_array_h, TRAPS) {
2586
2587 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2588 THROW(vmSymbols::java_lang_NullPointerException());
2589 }
2590
2591 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2592
2593 if (stack_trace_array_h->length() != depth(throwable())) {
2594 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2595 }
2596
2597 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2598 BacktraceIterator iter(result, THREAD);
2599
2600 int index = 0;
2601 while (iter.repeat()) {
2602 BacktraceElement bte = iter.next(THREAD);
2603
2604 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2605
2606 if (stack_trace_element.is_null()) {
2607 THROW(vmSymbols::java_lang_NullPointerException());
2608 }
2609
2610 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2611 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2612
2613 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2614 method,
2615 bte._version,
2616 bte._bci,
2617 bte._name, CHECK);
2618 }
2619 }
2620
2621 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2622 Thread* THREAD = Thread::current();
2623 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
2624 BacktraceIterator iter(result, THREAD);
2625 // No backtrace available.
2626 if (!iter.repeat()) return false;
2627
2628 // If the exception happened in a frame that has been hidden, i.e.,
2629 // omitted from the back trace, we can not compute the message.
2630 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2631 if (hidden != NULL) {
2632 return false;
2633 }
2634
2635 // Get first backtrace element.
2636 BacktraceElement bte = iter.next(THREAD);
2637
2638 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2639 assert(holder != NULL, "first element should be non-null");
2640 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2641
2642 // Original version is no longer available.
2643 if (m == NULL || !version_matches(m, bte._version)) {
2644 return false;
2645 }
2646
2647 *method = m;
2648 *bci = bte._bci;
2649 return true;
2650 }
2651
2652 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2653 // Allocate java.lang.StackTraceElement instance
2654 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2655 assert(k != NULL, "must be loaded in 1.4+");
2656 if (k->should_be_initialized()) {
2657 k->initialize(CHECK_0);
2658 }
2659
2660 Handle element = k->allocate_instance_handle(CHECK_0);
2661
2662 int version = method->constants()->version();
2663 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
2664 return element();
2665 }
2666
2667 void java_lang_StackTraceElement::fill_in(Handle element,
2668 InstanceKlass* holder, const methodHandle& method,
2669 int version, int bci, Symbol* name, TRAPS) {
2670 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2671
2672 ResourceMark rm(THREAD);
2673 HandleMark hm(THREAD);
2674
2675 // Fill in class name
2676 Handle java_class(THREAD, holder->java_mirror());
2677 oop classname = java_lang_Class::name(java_class, CHECK);
2678 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2679 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2680
2681 oop loader = holder->class_loader();
2682 if (loader != NULL) {
2683 oop loader_name = java_lang_ClassLoader::name(loader);
2684 if (loader_name != NULL)
2685 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2686 }
2687
2688 // Fill in method name
2689 oop methodname = StringTable::intern(name, CHECK);
2690 java_lang_StackTraceElement::set_methodName(element(), methodname);
2691
2692 // Fill in module name and version
2693 ModuleEntry* module = holder->module();
2694 if (module->is_named()) {
2695 oop module_name = StringTable::intern(module->name(), CHECK);
2696 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2697 oop module_version;
2698 if (module->version() != NULL) {
2699 module_version = StringTable::intern(module->version(), CHECK);
2700 } else {
2701 module_version = NULL;
2702 }
2703 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2704 }
2705
2706 if (method() == NULL || !version_matches(method(), version)) {
2707 // The method was redefined, accurate line number information isn't available
2708 java_lang_StackTraceElement::set_fileName(element(), NULL);
2709 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2710 } else {
2711 // Fill in source file name and line number.
2712 Symbol* source = Backtrace::get_source_file_name(holder, version);
2713 oop source_file = java_lang_Class::source_file(java_class());
2714 if (source != NULL) {
2715 // Class was not redefined. We can trust its cache if set,
2716 // else we have to initialize it.
2717 if (source_file == NULL) {
2718 source_file = StringTable::intern(source, CHECK);
2719 java_lang_Class::set_source_file(java_class(), source_file);
2720 }
2721 } else {
2722 // Class was redefined. Dump the cache if it was set.
2723 if (source_file != NULL) {
2724 source_file = NULL;
2725 java_lang_Class::set_source_file(java_class(), source_file);
2726 }
2727 }
2728 java_lang_StackTraceElement::set_fileName(element(), source_file);
2729
2730 int line_number = Backtrace::get_line_number(method(), bci);
2731 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2732 }
2733 }
2734
2735 #if INCLUDE_JVMCI
2736 void java_lang_StackTraceElement::decode(Handle mirror, methodHandle method, int bci, Symbol*& methodname, Symbol*& filename, int& line_number) {
2737 int method_id = method->orig_method_idnum();
2738 int cpref = method->name_index();
2739 decode(mirror, method_id, method->constants()->version(), bci, cpref, methodname, filename, line_number);
2740 }
2741
2742 void java_lang_StackTraceElement::decode(Handle mirror, int method_id, int version, int bci, int cpref, Symbol*& methodname, Symbol*& filename, int& line_number) {
2743 // Fill in class name
2744 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2745 Method* method = holder->method_with_orig_idnum(method_id, version);
2746
2747 // The method can be NULL if the requested class version is gone
2748 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
2749
2750 // Fill in method name
2751 methodname = sym;
2752
2753 if (!version_matches(method, version)) {
2754 // If the method was redefined, accurate line number information isn't available
2755 filename = NULL;
2756 line_number = -1;
2757 } else {
2758 // Fill in source file name and line number.
2759 // Use a specific ik version as a holder since the mirror might
2760 // refer to a version that is now obsolete and no longer accessible
2761 // via the previous versions list.
2762 holder = holder->get_klass_version(version);
2763 assert(holder != NULL, "sanity check");
2764 filename = holder->source_file_name();
2765 line_number = Backtrace::get_line_number(method, bci);
2766 }
2767 }
2768 #endif // INCLUDE_JVMCI
2769
2770 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2771 HandleMark hm(THREAD);
2772 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2773 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2774 // we should expand MemberName::name when Throwable uses StackTrace
2775 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2776 return method;
2777 }
2778
2779 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2780 // set Method* or mid/cpref
2781 HandleMark hm(THREAD);
2782 Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2783 InstanceKlass* ik = method->method_holder();
2784 CallInfo info(method(), ik, CHECK);
2785 MethodHandles::init_method_MemberName(mname, info);
2786 // set bci
2787 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2788 // method may be redefined; store the version
2789 int version = method->constants()->version();
2790 assert((jushort)version == version, "version should be short");
2791 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2792 }
2793
2794 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2795 ResourceMark rm(THREAD);
2796 HandleMark hm(THREAD);
2797 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2798 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2799 InstanceKlass* holder = InstanceKlass::cast(clazz);
2800 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2801
2802 short version = stackFrame->short_field(_version_offset);
2803 int bci = stackFrame->int_field(_bci_offset);
2804 Symbol* name = method->name();
2805 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method),
2806 version, bci, name, CHECK);
2807 }
2808
2809 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2810 macro(_memberName_offset, k, "memberName", object_signature, false); \
2811 macro(_bci_offset, k, "bci", int_signature, false)
2812
2813 void java_lang_StackFrameInfo::compute_offsets() {
2814 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2815 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2816 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2817 }
2818
2819 #if INCLUDE_CDS
2820 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2821 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2822 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2823 }
2824 #endif
2825
2826 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2827 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2828 macro(_locals_offset, k, "locals", object_array_signature, false); \
2829 macro(_operands_offset, k, "operands", object_array_signature, false); \
2830 macro(_mode_offset, k, "mode", int_signature, false)
2831
2832 void java_lang_LiveStackFrameInfo::compute_offsets() {
2833 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2834 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2835 }
2836
2837 #if INCLUDE_CDS
2838 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2839 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2840 }
2841 #endif
2842
2843 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2844 macro(override_offset, k, "override", bool_signature, false)
2845
2846 void java_lang_reflect_AccessibleObject::compute_offsets() {
2847 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2848 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2849 }
2850
2851 #if INCLUDE_CDS
2852 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2853 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2854 }
2855 #endif
2856
2857 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2858 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2859 return (jboolean) reflect->bool_field(override_offset);
2860 }
2861
2862 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2863 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2864 reflect->bool_field_put(override_offset, (int) value);
2865 }
2866
2867 #define METHOD_FIELDS_DO(macro) \
2868 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2869 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
2870 macro(returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2871 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2872 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2873 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2874 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2875 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2876 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2877 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2878 macro(annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
2879
2880 void java_lang_reflect_Method::compute_offsets() {
2881 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2882 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2883 }
2884
2885 #if INCLUDE_CDS
2886 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2887 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2888 }
2889 #endif
2890
2891 Handle java_lang_reflect_Method::create(TRAPS) {
2892 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2893 Klass* klass = SystemDictionary::reflect_Method_klass();
2894 // This class is eagerly initialized during VM initialization, since we keep a refence
2895 // to one of the methods
2896 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2897 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2898 }
2899
2900 oop java_lang_reflect_Method::clazz(oop reflect) {
2901 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2902 return reflect->obj_field(clazz_offset);
2903 }
2904
2905 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2906 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2907 reflect->obj_field_put(clazz_offset, value);
2908 }
2909
2910 int java_lang_reflect_Method::slot(oop reflect) {
2911 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2912 return reflect->int_field(slot_offset);
2913 }
2914
2915 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2916 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2917 reflect->int_field_put(slot_offset, value);
2918 }
2919
2920 void java_lang_reflect_Method::set_name(oop method, oop value) {
2921 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2922 method->obj_field_put(name_offset, value);
2923 }
2924
2925 oop java_lang_reflect_Method::return_type(oop method) {
2926 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2927 return method->obj_field(returnType_offset);
2928 }
2929
2930 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2931 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2932 method->obj_field_put(returnType_offset, value);
2933 }
2934
2935 oop java_lang_reflect_Method::parameter_types(oop method) {
2936 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2937 return method->obj_field(parameterTypes_offset);
2938 }
2939
2940 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2941 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2942 method->obj_field_put(parameterTypes_offset, value);
2943 }
2944
2945 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2946 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2947 method->obj_field_put(exceptionTypes_offset, value);
2948 }
2949
2950 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2951 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2952 method->int_field_put(modifiers_offset, value);
2953 }
2954
2955 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2956 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2957 method->obj_field_put(signature_offset, value);
2958 }
2959
2960 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2961 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2962 method->obj_field_put(annotations_offset, value);
2963 }
2964
2965 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2966 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2967 method->obj_field_put(parameter_annotations_offset, value);
2968 }
2969
2970 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2971 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2972 method->obj_field_put(annotation_default_offset, value);
2973 }
2974
2975 #define CONSTRUCTOR_FIELDS_DO(macro) \
2976 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2977 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2978 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2979 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2980 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2981 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2982 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2983 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
2984
2985 void java_lang_reflect_Constructor::compute_offsets() {
2986 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2987 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2988 }
2989
2990 #if INCLUDE_CDS
2991 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
2992 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2993 }
2994 #endif
2995
2996 Handle java_lang_reflect_Constructor::create(TRAPS) {
2997 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2998 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2999 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3000 InstanceKlass* ik = InstanceKlass::cast(k);
3001 // Ensure it is initialized
3002 ik->initialize(CHECK_NH);
3003 return ik->allocate_instance_handle(THREAD);
3004 }
3005
3006 oop java_lang_reflect_Constructor::clazz(oop reflect) {
3007 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3008 return reflect->obj_field(clazz_offset);
3009 }
3010
3011 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
3012 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3013 reflect->obj_field_put(clazz_offset, value);
3014 }
3015
3016 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
3017 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3018 return constructor->obj_field(parameterTypes_offset);
3019 }
3020
3021 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
3022 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3023 constructor->obj_field_put(parameterTypes_offset, value);
3024 }
3025
3026 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
3027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3028 constructor->obj_field_put(exceptionTypes_offset, value);
3029 }
3030
3031 int java_lang_reflect_Constructor::slot(oop reflect) {
3032 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3033 return reflect->int_field(slot_offset);
3034 }
3035
3036 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
3037 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3038 reflect->int_field_put(slot_offset, value);
3039 }
3040
3041 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3042 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3043 constructor->int_field_put(modifiers_offset, value);
3044 }
3045
3046 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3047 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3048 constructor->obj_field_put(signature_offset, value);
3049 }
3050
3051 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3052 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3053 constructor->obj_field_put(annotations_offset, value);
3054 }
3055
3056 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3057 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3058 method->obj_field_put(parameter_annotations_offset, value);
3059 }
3060
3061 #define FIELD_FIELDS_DO(macro) \
3062 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3063 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3064 macro(type_offset, k, vmSymbols::type_name(), class_signature, false); \
3065 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3066 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3067 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3068 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3069
3070 void java_lang_reflect_Field::compute_offsets() {
3071 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3072 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3073 }
3074
3075 #if INCLUDE_CDS
3076 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3077 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3078 }
3079 #endif
3080
3081 Handle java_lang_reflect_Field::create(TRAPS) {
3082 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3083 Symbol* name = vmSymbols::java_lang_reflect_Field();
3084 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3085 InstanceKlass* ik = InstanceKlass::cast(k);
3086 // Ensure it is initialized
3087 ik->initialize(CHECK_NH);
3088 return ik->allocate_instance_handle(THREAD);
3089 }
3090
3091 oop java_lang_reflect_Field::clazz(oop reflect) {
3092 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3093 return reflect->obj_field(clazz_offset);
3094 }
3095
3096 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3097 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3098 reflect->obj_field_put(clazz_offset, value);
3099 }
3100
3101 oop java_lang_reflect_Field::name(oop field) {
3102 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3103 return field->obj_field(name_offset);
3104 }
3105
3106 void java_lang_reflect_Field::set_name(oop field, oop value) {
3107 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3108 field->obj_field_put(name_offset, value);
3109 }
3110
3111 oop java_lang_reflect_Field::type(oop field) {
3112 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3113 return field->obj_field(type_offset);
3114 }
3115
3116 void java_lang_reflect_Field::set_type(oop field, oop value) {
3117 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3118 field->obj_field_put(type_offset, value);
3119 }
3120
3121 int java_lang_reflect_Field::slot(oop reflect) {
3122 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3123 return reflect->int_field(slot_offset);
3124 }
3125
3126 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3127 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3128 reflect->int_field_put(slot_offset, value);
3129 }
3130
3131 int java_lang_reflect_Field::modifiers(oop field) {
3132 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3133 return field->int_field(modifiers_offset);
3134 }
3135
3136 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3137 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3138 field->int_field_put(modifiers_offset, value);
3139 }
3140
3141 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3142 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3143 field->obj_field_put(signature_offset, value);
3144 }
3145
3146 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3147 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3148 field->obj_field_put(annotations_offset, value);
3149 }
3150
3151 #define CONSTANTPOOL_FIELDS_DO(macro) \
3152 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3153
3154 void reflect_ConstantPool::compute_offsets() {
3155 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3156 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3157 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3158 }
3159
3160 #if INCLUDE_CDS
3161 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3162 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3163 }
3164 #endif
3165
3166 #define PARAMETER_FIELDS_DO(macro) \
3167 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3168 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3169 macro(index_offset, k, vmSymbols::index_name(), int_signature, false); \
3170 macro(executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3171
3172 void java_lang_reflect_Parameter::compute_offsets() {
3173 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3174 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3175 }
3176
3177 #if INCLUDE_CDS
3178 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3179 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3180 }
3181 #endif
3182
3183 Handle java_lang_reflect_Parameter::create(TRAPS) {
3184 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3185 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3186 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3187 InstanceKlass* ik = InstanceKlass::cast(k);
3188 // Ensure it is initialized
3189 ik->initialize(CHECK_NH);
3190 return ik->allocate_instance_handle(THREAD);
3191 }
3192
3193 oop java_lang_reflect_Parameter::name(oop param) {
3194 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3195 return param->obj_field(name_offset);
3196 }
3197
3198 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3199 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3200 param->obj_field_put(name_offset, value);
3201 }
3202
3203 int java_lang_reflect_Parameter::modifiers(oop param) {
3204 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3205 return param->int_field(modifiers_offset);
3206 }
3207
3208 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3209 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3210 param->int_field_put(modifiers_offset, value);
3211 }
3212
3213 int java_lang_reflect_Parameter::index(oop param) {
3214 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3215 return param->int_field(index_offset);
3216 }
3217
3218 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3219 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3220 param->int_field_put(index_offset, value);
3221 }
3222
3223 oop java_lang_reflect_Parameter::executable(oop param) {
3224 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3225 return param->obj_field(executable_offset);
3226 }
3227
3228 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3229 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3230 param->obj_field_put(executable_offset, value);
3231 }
3232
3233
3234 int java_lang_Module::loader_offset;
3235 int java_lang_Module::name_offset;
3236 int java_lang_Module::_module_entry_offset = -1;
3237
3238 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3239 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3240 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3241 vmSymbols::java_lang_module_init_signature(),
3242 loader, module_name, CHECK_NH);
3243 }
3244
3245 #define MODULE_FIELDS_DO(macro) \
3246 macro(loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3247 macro(name_offset, k, vmSymbols::name_name(), string_signature, false)
3248
3249 void java_lang_Module::compute_offsets() {
3250 InstanceKlass* k = SystemDictionary::Module_klass();
3251 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3252 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3253 }
3254
3255 #if INCLUDE_CDS
3256 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3257 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3258 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3259 }
3260 #endif
3261
3262 oop java_lang_Module::loader(oop module) {
3263 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3264 return module->obj_field(loader_offset);
3265 }
3266
3267 void java_lang_Module::set_loader(oop module, oop value) {
3268 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3269 module->obj_field_put(loader_offset, value);
3270 }
3271
3272 oop java_lang_Module::name(oop module) {
3273 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3274 return module->obj_field(name_offset);
3275 }
3276
3277 void java_lang_Module::set_name(oop module, oop value) {
3278 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3279 module->obj_field_put(name_offset, value);
3280 }
3281
3282 ModuleEntry* java_lang_Module::module_entry(oop module) {
3283 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3284 assert(module != NULL, "module can't be null");
3285 assert(oopDesc::is_oop(module), "module must be oop");
3286
3287 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3288 if (module_entry == NULL) {
3289 // If the inject field containing the ModuleEntry* is null then return the
3290 // class loader's unnamed module.
3291 oop loader = java_lang_Module::loader(module);
3292 Handle h_loader = Handle(Thread::current(), loader);
3293 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3294 return loader_cld->unnamed_module();
3295 }
3296 return module_entry;
3297 }
3298
3299 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3300 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3301 assert(module != NULL, "module can't be null");
3302 assert(oopDesc::is_oop(module), "module must be oop");
3303 module->address_field_put(_module_entry_offset, (address)module_entry);
3304 }
3305
3306 Handle reflect_ConstantPool::create(TRAPS) {
3307 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3308 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3309 // Ensure it is initialized
3310 k->initialize(CHECK_NH);
3311 return k->allocate_instance_handle(THREAD);
3312 }
3313
3314
3315 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3316 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3317 oop mirror = value->pool_holder()->java_mirror();
3318 // Save the mirror to get back the constant pool.
3319 reflect->obj_field_put(_oop_offset, mirror);
3320 }
3321
3322 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3323 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3324
3325 oop mirror = reflect->obj_field(_oop_offset);
3326 Klass* k = java_lang_Class::as_Klass(mirror);
3327 assert(k->is_instance_klass(), "Must be");
3328
3329 // Get the constant pool back from the klass. Since class redefinition
3330 // merges the new constant pool into the old, this is essentially the
3331 // same constant pool as the original. If constant pool merging is
3332 // no longer done in the future, this will have to change to save
3333 // the original.
3334 return InstanceKlass::cast(k)->constants();
3335 }
3336
3337 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3338 macro(_base_offset, k, "base", object_signature, false)
3339
3340 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3341 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3342 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3343 }
3344
3345 #if INCLUDE_CDS
3346 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3347 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3348 }
3349 #endif
3350
3351 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3352 Klass* k = SystemDictionary::box_klass(type);
3353 if (k == NULL) return NULL;
3354 InstanceKlass* ik = InstanceKlass::cast(k);
3355 if (!ik->is_initialized()) ik->initialize(CHECK_0);
3356 return ik->allocate_instance(THREAD);
3357 }
3358
3359
3360 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3361 oop box = initialize_and_allocate(type, CHECK_0);
3362 if (box == NULL) return NULL;
3363 switch (type) {
3364 case T_BOOLEAN:
3365 box->bool_field_put(value_offset, value->z);
3366 break;
3367 case T_CHAR:
3368 box->char_field_put(value_offset, value->c);
3369 break;
3370 case T_FLOAT:
3371 box->float_field_put(value_offset, value->f);
3372 break;
3373 case T_DOUBLE:
3374 box->double_field_put(long_value_offset, value->d);
3375 break;
3376 case T_BYTE:
3377 box->byte_field_put(value_offset, value->b);
3378 break;
3379 case T_SHORT:
3380 box->short_field_put(value_offset, value->s);
3381 break;
3382 case T_INT:
3383 box->int_field_put(value_offset, value->i);
3384 break;
3385 case T_LONG:
3386 box->long_field_put(long_value_offset, value->j);
3387 break;
3388 default:
3389 return NULL;
3390 }
3391 return box;
3392 }
3393
3394
3395 BasicType java_lang_boxing_object::basic_type(oop box) {
3396 if (box == NULL) return T_ILLEGAL;
3397 BasicType type = SystemDictionary::box_klass_type(box->klass());
3398 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3399 return T_ILLEGAL;
3400 return type;
3401 }
3402
3403
3404 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3405 BasicType type = SystemDictionary::box_klass_type(box->klass());
3406 switch (type) {
3407 case T_BOOLEAN:
3408 value->z = box->bool_field(value_offset);
3409 break;
3410 case T_CHAR:
3411 value->c = box->char_field(value_offset);
3412 break;
3413 case T_FLOAT:
3414 value->f = box->float_field(value_offset);
3415 break;
3416 case T_DOUBLE:
3417 value->d = box->double_field(long_value_offset);
3418 break;
3419 case T_BYTE:
3420 value->b = box->byte_field(value_offset);
3421 break;
3422 case T_SHORT:
3423 value->s = box->short_field(value_offset);
3424 break;
3425 case T_INT:
3426 value->i = box->int_field(value_offset);
3427 break;
3428 case T_LONG:
3429 value->j = box->long_field(long_value_offset);
3430 break;
3431 default:
3432 return T_ILLEGAL;
3433 } // end switch
3434 return type;
3435 }
3436
3437
3438 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3439 BasicType type = SystemDictionary::box_klass_type(box->klass());
3440 switch (type) {
3441 case T_BOOLEAN:
3442 box->bool_field_put(value_offset, value->z);
3443 break;
3444 case T_CHAR:
3445 box->char_field_put(value_offset, value->c);
3446 break;
3447 case T_FLOAT:
3448 box->float_field_put(value_offset, value->f);
3449 break;
3450 case T_DOUBLE:
3451 box->double_field_put(long_value_offset, value->d);
3452 break;
3453 case T_BYTE:
3454 box->byte_field_put(value_offset, value->b);
3455 break;
3456 case T_SHORT:
3457 box->short_field_put(value_offset, value->s);
3458 break;
3459 case T_INT:
3460 box->int_field_put(value_offset, value->i);
3461 break;
3462 case T_LONG:
3463 box->long_field_put(long_value_offset, value->j);
3464 break;
3465 default:
3466 return T_ILLEGAL;
3467 } // end switch
3468 return type;
3469 }
3470
3471
3472 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3473 switch (type) {
3474 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3475 case T_CHAR: st->print("%d", value->c); break;
3476 case T_BYTE: st->print("%d", value->b); break;
3477 case T_SHORT: st->print("%d", value->s); break;
3478 case T_INT: st->print("%d", value->i); break;
3479 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3480 case T_FLOAT: st->print("%f", value->f); break;
3481 case T_DOUBLE: st->print("%lf", value->d); break;
3482 default: st->print("type %d?", type); break;
3483 }
3484 }
3485
3486 // Support for java_lang_ref_Reference
3487
3488 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3489 assert(obj != NULL, "sanity");
3490 if (offset != java_lang_ref_Reference::referent_offset) {
3491 return false;
3492 }
3493
3494 Klass* k = obj->klass();
3495 if (!k->is_instance_klass()) {
3496 return false;
3497 }
3498
3499 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3500 bool is_reference = ik->reference_type() != REF_NONE;
3501 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3502 return is_reference;
3503 }
3504
3505 // Support for java_lang_ref_SoftReference
3506 //
3507
3508 #define SOFTREFERENCE_FIELDS_DO(macro) \
3509 macro(timestamp_offset, k, "timestamp", long_signature, false); \
3510 macro(static_clock_offset, k, "clock", long_signature, true)
3511
3512 void java_lang_ref_SoftReference::compute_offsets() {
3513 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3514 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3515 }
3516
3517 #if INCLUDE_CDS
3518 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3519 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3520 }
3521 #endif
3522
3523 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3524 return ref->long_field(timestamp_offset);
3525 }
3526
3527 jlong java_lang_ref_SoftReference::clock() {
3528 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3529 oop base = ik->static_field_base_raw();
3530 return base->long_field(static_clock_offset);
3531 }
3532
3533 void java_lang_ref_SoftReference::set_clock(jlong value) {
3534 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3535 oop base = ik->static_field_base_raw();
3536 base->long_field_put(static_clock_offset, value);
3537 }
3538
3539 // Support for java_lang_invoke_DirectMethodHandle
3540
3541 int java_lang_invoke_DirectMethodHandle::_member_offset;
3542
3543 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3544 oop member_name = NULL;
3545 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3546 "a DirectMethodHandle oop is expected");
3547 return dmh->obj_field(member_offset_in_bytes());
3548 }
3549
3550 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3551 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3552
3553 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3554 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3555 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3556 }
3557
3558 #if INCLUDE_CDS
3559 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3560 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3561 }
3562 #endif
3563
3564 // Support for java_lang_invoke_MethodHandle
3565
3566 int java_lang_invoke_MethodHandle::_type_offset;
3567 int java_lang_invoke_MethodHandle::_form_offset;
3568
3569 int java_lang_invoke_MemberName::_clazz_offset;
3570 int java_lang_invoke_MemberName::_name_offset;
3571 int java_lang_invoke_MemberName::_type_offset;
3572 int java_lang_invoke_MemberName::_flags_offset;
3573 int java_lang_invoke_MemberName::_method_offset;
3574 int java_lang_invoke_MemberName::_vmindex_offset;
3575
3576 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3577 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3578
3579 int java_lang_invoke_LambdaForm::_vmentry_offset;
3580
3581 #define METHODHANDLE_FIELDS_DO(macro) \
3582 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3583 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3584
3585 void java_lang_invoke_MethodHandle::compute_offsets() {
3586 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3587 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3588 }
3589
3590 #if INCLUDE_CDS
3591 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3592 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3593 }
3594 #endif
3595
3596 #define MEMBERNAME_FIELDS_DO(macro) \
3597 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3598 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3599 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3600 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3601 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3602
3603 void java_lang_invoke_MemberName::compute_offsets() {
3604 InstanceKlass* k = SystemDictionary::MemberName_klass();
3605 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3606 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3607 }
3608
3609 #if INCLUDE_CDS
3610 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3611 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3612 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3613 }
3614 #endif
3615
3616 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3617 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3618 assert(k != NULL, "jdk mismatch");
3619 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3620 }
3621
3622 #if INCLUDE_CDS
3623 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3624 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3625 }
3626 #endif
3627
3628 #define LAMBDAFORM_FIELDS_DO(macro) \
3629 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3630
3631 void java_lang_invoke_LambdaForm::compute_offsets() {
3632 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3633 assert (k != NULL, "jdk mismatch");
3634 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3635 }
3636
3637 #if INCLUDE_CDS
3638 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3639 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3640 }
3641 #endif
3642
3643 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3644 return obj != NULL && is_subclass(obj->klass());
3645 }
3646
3647
3648 oop java_lang_invoke_MethodHandle::type(oop mh) {
3649 return mh->obj_field(_type_offset);
3650 }
3651
3652 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3653 mh->obj_field_put(_type_offset, mtype);
3654 }
3655
3656 oop java_lang_invoke_MethodHandle::form(oop mh) {
3657 assert(_form_offset != 0, "");
3658 return mh->obj_field(_form_offset);
3659 }
3660
3661 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3662 assert(_form_offset != 0, "");
3663 mh->obj_field_put(_form_offset, lform);
3664 }
3665
3666 /// MemberName accessors
3667
3668 oop java_lang_invoke_MemberName::clazz(oop mname) {
3669 assert(is_instance(mname), "wrong type");
3670 return mname->obj_field(_clazz_offset);
3671 }
3672
3673 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3674 assert(is_instance(mname), "wrong type");
3675 mname->obj_field_put(_clazz_offset, clazz);
3676 }
3677
3678 oop java_lang_invoke_MemberName::name(oop mname) {
3679 assert(is_instance(mname), "wrong type");
3680 return mname->obj_field(_name_offset);
3681 }
3682
3683 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3684 assert(is_instance(mname), "wrong type");
3685 mname->obj_field_put(_name_offset, name);
3686 }
3687
3688 oop java_lang_invoke_MemberName::type(oop mname) {
3689 assert(is_instance(mname), "wrong type");
3690 return mname->obj_field(_type_offset);
3691 }
3692
3693 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3694 assert(is_instance(mname), "wrong type");
3695 mname->obj_field_put(_type_offset, type);
3696 }
3697
3698 int java_lang_invoke_MemberName::flags(oop mname) {
3699 assert(is_instance(mname), "wrong type");
3700 return mname->int_field(_flags_offset);
3701 }
3702
3703 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3704 assert(is_instance(mname), "wrong type");
3705 mname->int_field_put(_flags_offset, flags);
3706 }
3707
3708
3709 // Return vmtarget from ResolvedMethodName method field through indirection
3710 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3711 assert(is_instance(mname), "wrong type");
3712 oop method = mname->obj_field(_method_offset);
3713 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3714 }
3715
3716 bool java_lang_invoke_MemberName::is_method(oop mname) {
3717 assert(is_instance(mname), "must be MemberName");
3718 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3719 }
3720
3721 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3722 assert(is_instance(mname), "wrong type");
3723 mname->obj_field_put(_method_offset, resolved_method);
3724 }
3725
3726 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3727 assert(is_instance(mname), "wrong type");
3728 return (intptr_t) mname->address_field(_vmindex_offset);
3729 }
3730
3731 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3732 assert(is_instance(mname), "wrong type");
3733 mname->address_field_put(_vmindex_offset, (address) index);
3734 }
3735
3736
3737 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3738 assert(is_instance(resolved_method), "wrong type");
3739 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3740 assert(m->is_method(), "must be");
3741 return m;
3742 }
3743
3744 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3745 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3746 assert(is_instance(resolved_method), "wrong type");
3747 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3748 }
3749
3750 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3751 assert(is_instance(resolved_method), "wrong type");
3752 resolved_method->obj_field_put(_vmholder_offset, holder);
3753 }
3754
3755 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3756 const Method* method = m();
3757
3758 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3759 oop resolved_method = ResolvedMethodTable::find_method(method);
3760 if (resolved_method != NULL) {
3761 return resolved_method;
3762 }
3763
3764 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3765 if (!k->is_initialized()) {
3766 k->initialize(CHECK_NULL);
3767 }
3768
3769 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3770
3771 NoSafepointVerifier nsv;
3772
3773 if (method->is_old()) {
3774 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3775 method->get_new_method();
3776 }
3777
3778 InstanceKlass* holder = method->method_holder();
3779
3780 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
3781 // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3782 // distinct loaders) to ensure the metadata is kept alive.
3783 // This mirror may be different than the one in clazz field.
3784 set_vmholder(new_resolved_method, holder->java_mirror());
3785
3786 // Set flag in class to indicate this InstanceKlass has entries in the table
3787 // to avoid walking table during redefinition if none of the redefined classes
3788 // have any membernames in the table.
3789 holder->set_has_resolved_methods();
3790
3791 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3792 }
3793
3794 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3795 assert(is_instance(lform), "wrong type");
3796 return lform->obj_field(_vmentry_offset);
3797 }
3798
3799
3800 // Support for java_lang_invoke_MethodType
3801
3802 int java_lang_invoke_MethodType::_rtype_offset;
3803 int java_lang_invoke_MethodType::_ptypes_offset;
3804
3805 #define METHODTYPE_FIELDS_DO(macro) \
3806 macro(_rtype_offset, k, "rtype", class_signature, false); \
3807 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3808
3809 void java_lang_invoke_MethodType::compute_offsets() {
3810 InstanceKlass* k = SystemDictionary::MethodType_klass();
3811 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3812 }
3813
3814 #if INCLUDE_CDS
3815 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3816 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3817 }
3818 #endif
3819
3820 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3821 st->print("(");
3822 objArrayOop pts = ptypes(mt);
3823 for (int i = 0, limit = pts->length(); i < limit; i++) {
3824 java_lang_Class::print_signature(pts->obj_at(i), st);
3825 }
3826 st->print(")");
3827 java_lang_Class::print_signature(rtype(mt), st);
3828 }
3829
3830 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
3831 ResourceMark rm;
3832 stringStream buffer(128);
3833 print_signature(mt, &buffer);
3834 const char* sigstr = buffer.base();
3835 int siglen = (int) buffer.size();
3836 Symbol *name;
3837 if (!intern_if_not_found) {
3838 name = SymbolTable::probe(sigstr, siglen);
3839 } else {
3840 name = SymbolTable::new_symbol(sigstr, siglen);
3841 }
3842 return name;
3843 }
3844
3845 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3846 if (mt1 == mt2)
3847 return true;
3848 if (rtype(mt1) != rtype(mt2))
3849 return false;
3850 if (ptype_count(mt1) != ptype_count(mt2))
3851 return false;
3852 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3853 if (ptype(mt1, i) != ptype(mt2, i))
3854 return false;
3855 }
3856 return true;
3857 }
3858
3859 oop java_lang_invoke_MethodType::rtype(oop mt) {
3860 assert(is_instance(mt), "must be a MethodType");
3861 return mt->obj_field(_rtype_offset);
3862 }
3863
3864 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3865 assert(is_instance(mt), "must be a MethodType");
3866 return (objArrayOop) mt->obj_field(_ptypes_offset);
3867 }
3868
3869 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3870 return ptypes(mt)->obj_at(idx);
3871 }
3872
3873 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3874 return ptypes(mt)->length();
3875 }
3876
3877 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3878 objArrayOop pts = ptypes(mt);
3879 int count = pts->length();
3880 int slots = 0;
3881 for (int i = 0; i < count; i++) {
3882 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3883 slots += type2size[bt];
3884 }
3885 return slots;
3886 }
3887
3888 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3889 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3890 return type2size[bt];
3891 }
3892
3893
3894 // Support for java_lang_invoke_CallSite
3895
3896 int java_lang_invoke_CallSite::_target_offset;
3897 int java_lang_invoke_CallSite::_context_offset;
3898
3899 #define CALLSITE_FIELDS_DO(macro) \
3900 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
3901 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3902
3903 void java_lang_invoke_CallSite::compute_offsets() {
3904 InstanceKlass* k = SystemDictionary::CallSite_klass();
3905 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3906 }
3907
3908 #if INCLUDE_CDS
3909 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
3910 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3911 }
3912 #endif
3913
3914 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
3915 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3916
3917 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
3918 return dep_oop;
3919 }
3920
3921 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3922
3923 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3924 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
3925
3926 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3927 InstanceKlass* k = SystemDictionary::Context_klass();
3928 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3929 }
3930
3931 #if INCLUDE_CDS
3932 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
3933 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3934 }
3935 #endif
3936
3937 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3938 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3939 nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
3940 volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
3941 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
3942 return dep_ctx;
3943 }
3944
3945 // Support for java_security_AccessControlContext
3946
3947 int java_security_AccessControlContext::_context_offset = 0;
3948 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3949 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3950 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3951
3952 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
3953 macro(_context_offset, k, "context", protectiondomain_signature, false); \
3954 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
3955 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
3956 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
3957
3958 void java_security_AccessControlContext::compute_offsets() {
3959 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3960 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
3961 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3962 }
3963
3964 #if INCLUDE_CDS
3965 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
3966 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3967 }
3968 #endif
3969
3970 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3971 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3972 // Ensure klass is initialized
3973 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3974 // Allocate result
3975 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3976 // Fill in values
3977 result->obj_field_put(_context_offset, context());
3978 result->obj_field_put(_privilegedContext_offset, privileged_context());
3979 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3980 // whitelist AccessControlContexts created by the JVM if present
3981 if (_isAuthorized_offset != -1) {
3982 result->bool_field_put(_isAuthorized_offset, true);
3983 }
3984 return result;
3985 }
3986
3987
3988 // Support for java_lang_ClassLoader
3989
3990 bool java_lang_ClassLoader::offsets_computed = false;
3991 int java_lang_ClassLoader::_loader_data_offset = -1;
3992 int java_lang_ClassLoader::parallelCapable_offset = -1;
3993 int java_lang_ClassLoader::name_offset = -1;
3994 int java_lang_ClassLoader::nameAndId_offset = -1;
3995 int java_lang_ClassLoader::unnamedModule_offset = -1;
3996
3997 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
3998 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3999 return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
4000 }
4001
4002 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
4003 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4004 return RawAccess<>::load_at(loader, _loader_data_offset);
4005 }
4006
4007 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4008 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4009 HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4010 }
4011
4012 #define CLASSLOADER_FIELDS_DO(macro) \
4013 macro(parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
4014 macro(name_offset, k1, vmSymbols::name_name(), string_signature, false); \
4015 macro(nameAndId_offset, k1, "nameAndId", string_signature, false); \
4016 macro(unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
4017 macro(parent_offset, k1, "parent", classloader_signature, false)
4018
4019 void java_lang_ClassLoader::compute_offsets() {
4020 assert(!offsets_computed, "offsets should be initialized only once");
4021 offsets_computed = true;
4022
4023 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4024 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4025
4026 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4027 }
4028
4029 #if INCLUDE_CDS
4030 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4031 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4032 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4033 }
4034 #endif
4035
4036 oop java_lang_ClassLoader::parent(oop loader) {
4037 assert(is_instance(loader), "loader must be oop");
4038 return loader->obj_field(parent_offset);
4039 }
4040
4041 // Returns the name field of this class loader. If the name field has not
4042 // been set, null will be returned.
4043 oop java_lang_ClassLoader::name(oop loader) {
4044 assert(is_instance(loader), "loader must be oop");
4045 return loader->obj_field(name_offset);
4046 }
4047
4048 // Returns the nameAndId field of this class loader. The format is
4049 // as follows:
4050 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4051 // If the defining loader has no name then <qualified-class-name> @<id>
4052 // If built-in loader, then omit '@<id>' as there is only one instance.
4053 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4054 oop java_lang_ClassLoader::nameAndId(oop loader) {
4055 assert(is_instance(loader), "loader must be oop");
4056 return loader->obj_field(nameAndId_offset);
4057 }
4058
4059 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4060 assert(is_instance(loader), "loader must be oop");
4061 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4062 oop acl = loader;
4063 debug_only(jint loop_count = 0);
4064 // This loop taken verbatim from ClassLoader.java:
4065 do {
4066 acl = parent(acl);
4067 if (cl == acl) {
4068 return true;
4069 }
4070 assert(++loop_count > 0, "loop_count overflow");
4071 } while (acl != NULL);
4072 return false;
4073 }
4074
4075 bool java_lang_ClassLoader::is_instance(oop obj) {
4076 return obj != NULL && is_subclass(obj->klass());
4077 }
4078
4079
4080 // For class loader classes, parallelCapable defined
4081 // based on non-null field
4082 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4083 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4084 if (parallelCapable_offset == -1) {
4085 // Default for backward compatibility is false
4086 return false;
4087 }
4088 return (class_loader->obj_field(parallelCapable_offset) != NULL);
4089 }
4090
4091 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4092 // Fix for 4474172; see evaluation for more details
4093 loader = non_reflection_class_loader(loader);
4094
4095 oop cl = SystemDictionary::java_system_loader();
4096 while(cl != NULL) {
4097 if (cl == loader) return true;
4098 cl = parent(cl);
4099 }
4100 return false;
4101 }
4102
4103 // Return true if this is one of the class loaders associated with
4104 // the generated bytecodes for reflection.
4105 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4106 if (loader != NULL) {
4107 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4108 // This might be null in non-1.4 JDKs
4109 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4110 }
4111 return false;
4112 }
4113
4114 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4115 // See whether this is one of the class loaders associated with
4116 // the generated bytecodes for reflection, and if so, "magically"
4117 // delegate to its parent to prevent class loading from occurring
4118 // in places where applications using reflection didn't expect it.
4119 if (is_reflection_class_loader(loader)) {
4120 return parent(loader);
4121 }
4122 return loader;
4123 }
4124
4125 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4126 assert(is_instance(loader), "loader must be oop");
4127 return loader->obj_field(unnamedModule_offset);
4128 }
4129
4130 // Support for java_lang_System
4131 //
4132 #define SYSTEM_FIELDS_DO(macro) \
4133 macro(static_in_offset, k, "in", input_stream_signature, true); \
4134 macro(static_out_offset, k, "out", print_stream_signature, true); \
4135 macro(static_err_offset, k, "err", print_stream_signature, true); \
4136 macro(static_security_offset, k, "security", security_manager_signature, true)
4137
4138 void java_lang_System::compute_offsets() {
4139 InstanceKlass* k = SystemDictionary::System_klass();
4140 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4141 }
4142
4143 #if INCLUDE_CDS
4144 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4145 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4146 }
4147 #endif
4148
4149 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4150 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4151 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4152
4153 // Support for jdk_internal_misc_UnsafeConstants
4154 //
4155 class UnsafeConstantsFixup : public FieldClosure {
4156 private:
4157 int _address_size;
4158 int _page_size;
4159 bool _big_endian;
4160 bool _use_unaligned_access;
4161 int _data_cache_line_flush_size;
4162 public:
4163 UnsafeConstantsFixup() {
4164 // round up values for all static final fields
4165 _address_size = sizeof(void*);
4166 _page_size = os::vm_page_size();
4167 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4168 _use_unaligned_access = UseUnalignedAccesses;
4169 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4170 }
4171
4172 void do_field(fieldDescriptor* fd) {
4173 oop mirror = fd->field_holder()->java_mirror();
4174 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4175 assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4176 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4177 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4178 if (fd->name() == vmSymbols::address_size_name()) {
4179 mirror->int_field_put(fd->offset(), _address_size);
4180 } else if (fd->name() == vmSymbols::page_size_name()) {
4181 mirror->int_field_put(fd->offset(), _page_size);
4182 } else if (fd->name() == vmSymbols::big_endian_name()) {
4183 mirror->bool_field_put(fd->offset(), _big_endian);
4184 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4185 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4186 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4187 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4188 } else {
4189 assert(false, "unexpected UnsafeConstants field");
4190 }
4191 }
4192 };
4193
4194 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4195 UnsafeConstantsFixup fixup;
4196 SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4197 }
4198
4199 int java_lang_Class::_klass_offset;
4200 int java_lang_Class::_array_klass_offset;
4201 int java_lang_Class::_oop_size_offset;
4202 int java_lang_Class::_static_oop_field_count_offset;
4203 int java_lang_Class::_class_loader_offset;
4204 int java_lang_Class::_module_offset;
4205 int java_lang_Class::_protection_domain_offset;
4206 int java_lang_Class::_component_mirror_offset;
4207 int java_lang_Class::_init_lock_offset;
4208 int java_lang_Class::_signers_offset;
4209 int java_lang_Class::_name_offset;
4210 int java_lang_Class::_source_file_offset;
4211 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4212 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4213 int java_lang_Throwable::backtrace_offset;
4214 int java_lang_Throwable::detailMessage_offset;
4215 int java_lang_Throwable::stackTrace_offset;
4216 int java_lang_Throwable::depth_offset;
4217 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4218 int java_lang_reflect_AccessibleObject::override_offset;
4219 int java_lang_reflect_Method::clazz_offset;
4220 int java_lang_reflect_Method::name_offset;
4221 int java_lang_reflect_Method::returnType_offset;
4222 int java_lang_reflect_Method::parameterTypes_offset;
4223 int java_lang_reflect_Method::exceptionTypes_offset;
4224 int java_lang_reflect_Method::slot_offset;
4225 int java_lang_reflect_Method::modifiers_offset;
4226 int java_lang_reflect_Method::signature_offset;
4227 int java_lang_reflect_Method::annotations_offset;
4228 int java_lang_reflect_Method::parameter_annotations_offset;
4229 int java_lang_reflect_Method::annotation_default_offset;
4230 int java_lang_reflect_Constructor::clazz_offset;
4231 int java_lang_reflect_Constructor::parameterTypes_offset;
4232 int java_lang_reflect_Constructor::exceptionTypes_offset;
4233 int java_lang_reflect_Constructor::slot_offset;
4234 int java_lang_reflect_Constructor::modifiers_offset;
4235 int java_lang_reflect_Constructor::signature_offset;
4236 int java_lang_reflect_Constructor::annotations_offset;
4237 int java_lang_reflect_Constructor::parameter_annotations_offset;
4238 int java_lang_reflect_Field::clazz_offset;
4239 int java_lang_reflect_Field::name_offset;
4240 int java_lang_reflect_Field::type_offset;
4241 int java_lang_reflect_Field::slot_offset;
4242 int java_lang_reflect_Field::modifiers_offset;
4243 int java_lang_reflect_Field::signature_offset;
4244 int java_lang_reflect_Field::annotations_offset;
4245 int java_lang_reflect_Parameter::name_offset;
4246 int java_lang_reflect_Parameter::modifiers_offset;
4247 int java_lang_reflect_Parameter::index_offset;
4248 int java_lang_reflect_Parameter::executable_offset;
4249 int java_lang_boxing_object::value_offset;
4250 int java_lang_boxing_object::long_value_offset;
4251 int java_lang_ref_Reference::referent_offset;
4252 int java_lang_ref_Reference::queue_offset;
4253 int java_lang_ref_Reference::next_offset;
4254 int java_lang_ref_Reference::discovered_offset;
4255 int java_lang_ref_SoftReference::timestamp_offset;
4256 int java_lang_ref_SoftReference::static_clock_offset;
4257 int java_lang_ClassLoader::parent_offset;
4258 int java_lang_System::static_in_offset;
4259 int java_lang_System::static_out_offset;
4260 int java_lang_System::static_err_offset;
4261 int java_lang_System::static_security_offset;
4262 int java_lang_StackTraceElement::methodName_offset;
4263 int java_lang_StackTraceElement::fileName_offset;
4264 int java_lang_StackTraceElement::lineNumber_offset;
4265 int java_lang_StackTraceElement::moduleName_offset;
4266 int java_lang_StackTraceElement::moduleVersion_offset;
4267 int java_lang_StackTraceElement::classLoaderName_offset;
4268 int java_lang_StackTraceElement::declaringClass_offset;
4269 int java_lang_StackTraceElement::declaringClassObject_offset;
4270 int java_lang_StackFrameInfo::_memberName_offset;
4271 int java_lang_StackFrameInfo::_bci_offset;
4272 int java_lang_StackFrameInfo::_version_offset;
4273 int java_lang_LiveStackFrameInfo::_monitors_offset;
4274 int java_lang_LiveStackFrameInfo::_locals_offset;
4275 int java_lang_LiveStackFrameInfo::_operands_offset;
4276 int java_lang_LiveStackFrameInfo::_mode_offset;
4277 int java_lang_AssertionStatusDirectives::classes_offset;
4278 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4279 int java_lang_AssertionStatusDirectives::packages_offset;
4280 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4281 int java_lang_AssertionStatusDirectives::deflt_offset;
4282 int java_nio_Buffer::_limit_offset;
4283 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4284 int reflect_ConstantPool::_oop_offset;
4285 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4286 int java_lang_Integer_IntegerCache::_static_cache_offset;
4287 int java_lang_Long_LongCache::_static_cache_offset;
4288 int java_lang_Character_CharacterCache::_static_cache_offset;
4289 int java_lang_Short_ShortCache::_static_cache_offset;
4290 int java_lang_Byte_ByteCache::_static_cache_offset;
4291 int java_lang_Boolean::_static_TRUE_offset;
4292 int java_lang_Boolean::_static_FALSE_offset;
4293
4294
4295
4296 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4297 macro(declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4298 macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4299 macro(moduleName_offset, k, "moduleName", string_signature, false); \
4300 macro(moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4301 macro(declaringClass_offset, k, "declaringClass", string_signature, false); \
4302 macro(methodName_offset, k, "methodName", string_signature, false); \
4303 macro(fileName_offset, k, "fileName", string_signature, false); \
4304 macro(lineNumber_offset, k, "lineNumber", int_signature, false)
4305
4306 // Support for java_lang_StackTraceElement
4307 void java_lang_StackTraceElement::compute_offsets() {
4308 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4309 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4310 }
4311
4312 #if INCLUDE_CDS
4313 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4314 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4315 }
4316 #endif
4317
4318 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4319 element->obj_field_put(fileName_offset, value);
4320 }
4321
4322 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4323 element->obj_field_put(declaringClass_offset, value);
4324 }
4325
4326 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4327 element->obj_field_put(methodName_offset, value);
4328 }
4329
4330 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4331 element->int_field_put(lineNumber_offset, value);
4332 }
4333
4334 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4335 element->obj_field_put(moduleName_offset, value);
4336 }
4337
4338 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4339 element->obj_field_put(moduleVersion_offset, value);
4340 }
4341
4342 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4343 element->obj_field_put(classLoaderName_offset, value);
4344 }
4345
4346 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4347 element->obj_field_put(declaringClassObject_offset, value);
4348 }
4349
4350 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4351 element->short_field_put(_version_offset, value);
4352 }
4353
4354 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4355 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
4356 element->int_field_put(_bci_offset, value);
4357 }
4358
4359 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4360 element->obj_field_put(_monitors_offset, value);
4361 }
4362
4363 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4364 element->obj_field_put(_locals_offset, value);
4365 }
4366
4367 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4368 element->obj_field_put(_operands_offset, value);
4369 }
4370
4371 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4372 element->int_field_put(_mode_offset, value);
4373 }
4374
4375 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4376 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4377 macro(classes_offset, k, "classes", string_array_signature, false); \
4378 macro(classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4379 macro(packages_offset, k, "packages", string_array_signature, false); \
4380 macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4381 macro(deflt_offset, k, "deflt", bool_signature, false)
4382
4383 void java_lang_AssertionStatusDirectives::compute_offsets() {
4384 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4385 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4386 }
4387
4388 #if INCLUDE_CDS
4389 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4390 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4391 }
4392 #endif
4393
4394 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4395 o->obj_field_put(classes_offset, val);
4396 }
4397
4398 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4399 o->obj_field_put(classEnabled_offset, val);
4400 }
4401
4402 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4403 o->obj_field_put(packages_offset, val);
4404 }
4405
4406 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4407 o->obj_field_put(packageEnabled_offset, val);
4408 }
4409
4410 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4411 o->bool_field_put(deflt_offset, val);
4412 }
4413
4414
4415 // Support for intrinsification of java.nio.Buffer.checkIndex
4416 int java_nio_Buffer::limit_offset() {
4417 return _limit_offset;
4418 }
4419
4420 #define BUFFER_FIELDS_DO(macro) \
4421 macro(_limit_offset, k, "limit", int_signature, false)
4422
4423 void java_nio_Buffer::compute_offsets() {
4424 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4425 assert(k != NULL, "must be loaded in 1.4+");
4426 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4427 }
4428
4429 #if INCLUDE_CDS
4430 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4431 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4432 }
4433 #endif
4434
4435 #define AOS_FIELDS_DO(macro) \
4436 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4437
4438 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4439 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4440 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4441 }
4442
4443 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4444 assert(_owner_offset != 0, "Must be initialized");
4445 return obj->obj_field(_owner_offset);
4446 }
4447
4448 #if INCLUDE_CDS
4449 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4450 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4451 }
4452 #endif
4453
4454 #define INTEGER_CACHE_FIELDS_DO(macro) \
4455 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4456
4457 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4458 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4459 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4460 }
4461
4462 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4463 oop base = ik->static_field_base_raw();
4464 return objArrayOop(base->obj_field(_static_cache_offset));
4465 }
4466
4467 Symbol* java_lang_Integer_IntegerCache::symbol() {
4468 return vmSymbols::java_lang_Integer_IntegerCache();
4469 }
4470
4471 #if INCLUDE_CDS
4472 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4473 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4474 }
4475 #endif
4476 #undef INTEGER_CACHE_FIELDS_DO
4477
4478 jint java_lang_Integer::value(oop obj) {
4479 jvalue v;
4480 java_lang_boxing_object::get_value(obj, &v);
4481 return v.i;
4482 }
4483
4484 #define LONG_CACHE_FIELDS_DO(macro) \
4485 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4486
4487 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4488 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4489 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4490 }
4491
4492 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4493 oop base = ik->static_field_base_raw();
4494 return objArrayOop(base->obj_field(_static_cache_offset));
4495 }
4496
4497 Symbol* java_lang_Long_LongCache::symbol() {
4498 return vmSymbols::java_lang_Long_LongCache();
4499 }
4500
4501 #if INCLUDE_CDS
4502 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4503 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4504 }
4505 #endif
4506 #undef LONG_CACHE_FIELDS_DO
4507
4508 jlong java_lang_Long::value(oop obj) {
4509 jvalue v;
4510 java_lang_boxing_object::get_value(obj, &v);
4511 return v.j;
4512 }
4513
4514 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4515 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4516
4517 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4518 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4519 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4520 }
4521
4522 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4523 oop base = ik->static_field_base_raw();
4524 return objArrayOop(base->obj_field(_static_cache_offset));
4525 }
4526
4527 Symbol* java_lang_Character_CharacterCache::symbol() {
4528 return vmSymbols::java_lang_Character_CharacterCache();
4529 }
4530
4531 #if INCLUDE_CDS
4532 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4533 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4534 }
4535 #endif
4536 #undef CHARACTER_CACHE_FIELDS_DO
4537
4538 jchar java_lang_Character::value(oop obj) {
4539 jvalue v;
4540 java_lang_boxing_object::get_value(obj, &v);
4541 return v.c;
4542 }
4543
4544 #define SHORT_CACHE_FIELDS_DO(macro) \
4545 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4546
4547 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4548 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4549 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4550 }
4551
4552 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4553 oop base = ik->static_field_base_raw();
4554 return objArrayOop(base->obj_field(_static_cache_offset));
4555 }
4556
4557 Symbol* java_lang_Short_ShortCache::symbol() {
4558 return vmSymbols::java_lang_Short_ShortCache();
4559 }
4560
4561 #if INCLUDE_CDS
4562 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4563 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4564 }
4565 #endif
4566 #undef SHORT_CACHE_FIELDS_DO
4567
4568 jshort java_lang_Short::value(oop obj) {
4569 jvalue v;
4570 java_lang_boxing_object::get_value(obj, &v);
4571 return v.s;
4572 }
4573
4574 #define BYTE_CACHE_FIELDS_DO(macro) \
4575 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4576
4577 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4578 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4579 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4580 }
4581
4582 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4583 oop base = ik->static_field_base_raw();
4584 return objArrayOop(base->obj_field(_static_cache_offset));
4585 }
4586
4587 Symbol* java_lang_Byte_ByteCache::symbol() {
4588 return vmSymbols::java_lang_Byte_ByteCache();
4589 }
4590
4591 #if INCLUDE_CDS
4592 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4593 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4594 }
4595 #endif
4596 #undef BYTE_CACHE_FIELDS_DO
4597
4598 jbyte java_lang_Byte::value(oop obj) {
4599 jvalue v;
4600 java_lang_boxing_object::get_value(obj, &v);
4601 return v.b;
4602 }
4603 #define BOOLEAN_FIELDS_DO(macro) \
4604 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4605 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4606
4607
4608 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4609 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4610 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4611 }
4612
4613 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4614 oop base = ik->static_field_base_raw();
4615 return base->obj_field(_static_TRUE_offset);
4616 }
4617
4618 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4619 oop base = ik->static_field_base_raw();
4620 return base->obj_field(_static_FALSE_offset);
4621 }
4622
4623 Symbol* java_lang_Boolean::symbol() {
4624 return vmSymbols::java_lang_Boolean();
4625 }
4626
4627 #if INCLUDE_CDS
4628 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4629 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4630 }
4631 #endif
4632 #undef BOOLEAN_CACHE_FIELDS_DO
4633
4634 jboolean java_lang_Boolean::value(oop obj) {
4635 jvalue v;
4636 java_lang_boxing_object::get_value(obj, &v);
4637 return v.z;
4638 }
4639
4640 static int member_offset(int hardcoded_offset) {
4641 return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4642 }
4643
4644 // Compute hard-coded offsets
4645 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4646 // are not available to determine the offset_of_static_fields.
4647 void JavaClasses::compute_hard_coded_offsets() {
4648
4649 // java_lang_boxing_object
4650 java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
4651 java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4652
4653 // java_lang_ref_Reference
4654 java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
4655 java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
4656 java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
4657 java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4658 }
4659
4660 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4661
4662 // Compute non-hard-coded field offsets of all the classes in this file
4663 void JavaClasses::compute_offsets() {
4664 if (UseSharedSpaces) {
4665 assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4666 JvmtiExport::has_early_class_hook_env()),
4667 "JavaClasses::compute_offsets() must be called in early JVMTI phase.");
4668 // None of the classes used by the rest of this function can be replaced by
4669 // JMVTI ClassFileLoadHook.
4670 // We are safe to use the archived offsets, which have already been restored
4671 // by JavaClasses::serialize_offsets, without computing the offsets again.
4672 return;
4673 }
4674
4675 // We have already called the compute_offsets() of the
4676 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String and java_lang_Class)
4677 // earlier inside SystemDictionary::resolve_well_known_classes()
4678 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4679 }
4680
4681 #if INCLUDE_CDS
4682 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4683
4684 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4685 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4686 }
4687 #endif
4688
4689 #if INCLUDE_CDS_JAVA_HEAP
4690 bool JavaClasses::is_supported_for_archiving(oop obj) {
4691 Klass* klass = obj->klass();
4692
4693 if (klass == SystemDictionary::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed.
4694 klass == SystemDictionary::Module_klass() || // Module::module_entry is malloc'ed
4695 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in
4696 // regular Java code. The implementation of java.lang.invoke uses generated anonymoys classes
4697 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS.
4698 // So for now we cannot not support these classes for archiving.
4699 //
4700 // These objects typically are not referenced by static fields, but rather by resolved
4701 // constant pool entries, so excluding them shouldn't affect the archiving of static fields.
4702 klass == SystemDictionary::ResolvedMethodName_klass() ||
4703 klass == SystemDictionary::MemberName_klass() ||
4704 klass == SystemDictionary::Context_klass()) {
4705 return false;
4706 }
4707
4708 return true;
4709 }
4710 #endif
4711
4712 #ifndef PRODUCT
4713
4714 // These functions exist to assert the validity of hard-coded field offsets to guard
4715 // against changes in the class files
4716
4717 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4718 EXCEPTION_MARK;
4719 fieldDescriptor fd;
4720 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4721 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4722 InstanceKlass* ik = InstanceKlass::cast(k);
4723 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4724 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
4725 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4726 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4727 return false;
4728 }
4729 if (fd.is_static()) {
4730 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4731 return false;
4732 }
4733 if (fd.offset() == hardcoded_offset ) {
4734 return true;
4735 } else {
4736 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4737 klass_name, field_name, hardcoded_offset, fd.offset());
4738 return false;
4739 }
4740 }
4741
4742 // Check the hard-coded field offsets of all the classes in this file
4743
4744 void JavaClasses::check_offsets() {
4745 bool valid = true;
4746
4747 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4748 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4749
4750 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4751 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4752
4753 // Boxed primitive objects (java_lang_boxing_object)
4754
4755 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4756 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4757 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4758 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4759 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4760 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4761 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4762 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4763
4764 // java.lang.ref.Reference
4765
4766 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4767 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4768 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4769 // Fake field
4770 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4771
4772 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4773 }
4774
4775 #endif // PRODUCT
4776
4777 int InjectedField::compute_offset() {
4778 InstanceKlass* ik = InstanceKlass::cast(klass());
4779 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4780 if (!may_be_java && !fs.access_flags().is_internal()) {
4781 // Only look at injected fields
4782 continue;
4783 }
4784 if (fs.name() == name() && fs.signature() == signature()) {
4785 return fs.offset();
4786 }
4787 }
4788 ResourceMark rm;
4789 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)" : "");
4790 #ifndef PRODUCT
4791 ik->print();
4792 tty->print_cr("all fields:");
4793 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4794 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4795 }
4796 #endif //PRODUCT
4797 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
4798 return -1;
4799 }
4800
4801 void javaClasses_init() {
4802 JavaClasses::compute_offsets();
4803 JavaClasses::check_offsets();
4804 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4805 }