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.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/interfaceSupport.inline.hpp"
60 #include "runtime/java.hpp"
61 #include "runtime/javaCalls.hpp"
62 #include "runtime/jniHandles.inline.hpp"
63 #include "runtime/safepoint.hpp"
64 #include "runtime/safepointVerifiers.hpp"
65 #include "runtime/thread.inline.hpp"
66 #include "runtime/vframe.inline.hpp"
67 #include "runtime/vm_version.hpp"
68 #include "utilities/align.hpp"
69 #include "utilities/preserveException.hpp"
70 #include "utilities/utf8.hpp"
71 #if INCLUDE_JVMCI
72 #include "jvmci/jvmciJavaClasses.hpp"
73 #endif
74
75 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \
76 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
77
78 #if INCLUDE_CDS
79 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
80 f->do_u4((u4*)&_##name##_offset);
81 #endif
82
83 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \
84 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
85
86 InjectedField JavaClasses::_injected_fields[] = {
87 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
88 };
89
90 // Register native methods of Object
91 void java_lang_Object::register_natives(TRAPS) {
92 InstanceKlass* obj = SystemDictionary::Object_klass();
93 Method::register_native(obj, vmSymbols::hashCode_name(),
94 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK);
95 Method::register_native(obj, vmSymbols::wait_name(),
96 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK);
97 Method::register_native(obj, vmSymbols::notify_name(),
98 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK);
99 Method::register_native(obj, vmSymbols::notifyAll_name(),
100 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK);
101 Method::register_native(obj, vmSymbols::clone_name(),
102 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD);
103 }
104
105 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
106 return _injected_fields[id].compute_offset();
107 }
108
109 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
110 *field_count = 0;
111
112 vmSymbols::SID sid = vmSymbols::find_sid(class_name);
113 if (sid == vmSymbols::NO_SID) {
114 // Only well known classes can inject fields
115 return NULL;
116 }
117
118 int count = 0;
119 int start = -1;
120
121 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
122 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \
123 count++; \
124 if (start == -1) start = klass##_##name##_enum; \
125 }
126 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
127 #undef LOOKUP_INJECTED_FIELD
128
129 if (start != -1) {
130 *field_count = count;
131 return _injected_fields + start;
132 }
133 return NULL;
134 }
135
136
137 // Helpful routine for computing field offsets at run time rather than hardcoding them
138 // Finds local fields only, including static fields. Static field offsets are from the
139 // beginning of the mirror.
140 static void compute_offset(int &dest_offset,
141 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
142 bool is_static = false) {
143 fieldDescriptor fd;
144 if (ik == NULL) {
145 ResourceMark rm;
146 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
147 vm_exit_during_initialization("Invalid layout of well-known class");
148 }
149
150 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
151 ResourceMark rm;
152 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
153 name_symbol->as_C_string(), signature_symbol->as_C_string());
154 #ifndef PRODUCT
155 // Prints all fields and offsets
156 Log(class) lt;
157 LogStream ls(lt.error());
158 ik->print_on(&ls);
159 #endif //PRODUCT
160 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
161 }
162 dest_offset = fd.offset();
163 }
164
165 // Overloading to pass name as a string.
166 static void compute_offset(int& dest_offset, InstanceKlass* ik,
167 const char* name_string, Symbol* signature_symbol,
168 bool is_static = false) {
169 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
170 if (name == NULL) {
171 ResourceMark rm;
172 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
173 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
174 }
175 compute_offset(dest_offset, ik, name, signature_symbol, is_static);
176 }
177
178 int java_lang_String::value_offset = 0;
179 int java_lang_String::hash_offset = 0;
180 int java_lang_String::hashIsZero_offset = 0;
181 int java_lang_String::coder_offset = 0;
182
183 bool java_lang_String::initialized = false;
184
185 bool java_lang_String::is_instance(oop obj) {
186 return is_instance_inlined(obj);
187 }
188
189 #if INCLUDE_CDS
190 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
191 f->do_u4((u4*)&offset)
192 #endif
193
194 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
195 compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
196
197 #define STRING_FIELDS_DO(macro) \
198 macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
199 macro(hash_offset, k, "hash", int_signature, false); \
200 macro(hashIsZero_offset, k, "hashIsZero", bool_signature, false); \
201 macro(coder_offset, k, "coder", byte_signature, false);
202
203 void java_lang_String::compute_offsets() {
204 if (initialized) {
205 return;
206 }
207
208 InstanceKlass* k = SystemDictionary::String_klass();
209 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
210
211 initialized = true;
212 }
213
214 #if INCLUDE_CDS
215 void java_lang_String::serialize_offsets(SerializeClosure* f) {
216 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
217 f->do_bool(&initialized);
218 }
219 #endif
220
221 class CompactStringsFixup : public FieldClosure {
222 private:
223 bool _value;
224
225 public:
226 CompactStringsFixup(bool value) : _value(value) {}
227
228 void do_field(fieldDescriptor* fd) {
229 if (fd->name() == vmSymbols::compact_strings_name()) {
230 oop mirror = fd->field_holder()->java_mirror();
231 assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
232 assert(mirror != NULL, "String must have mirror already");
233 mirror->bool_field_put(fd->offset(), _value);
234 }
235 }
236 };
237
238 void java_lang_String::set_compact_strings(bool value) {
239 CompactStringsFixup fix(value);
240 SystemDictionary::String_klass()->do_local_static_fields(&fix);
241 }
242
243 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
244 assert(initialized, "Must be initialized");
245 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
246
247 // Create the String object first, so there's a chance that the String
248 // and the char array it points to end up in the same cache line.
249 oop obj;
250 obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
251
252 // Create the char array. The String object must be handlized here
253 // because GC can happen as a result of the allocation attempt.
254 Handle h_obj(THREAD, obj);
255 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
256 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
257
258 // Point the String at the char array
259 obj = h_obj();
260 set_value(obj, buffer);
261 // No need to zero the offset, allocation zero'ed the entire String object
262 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
263 return h_obj;
264 }
265
266 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
267 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
268 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
269 typeArrayOop buffer = value(h_obj());
270 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
271 if (is_latin1) {
272 for (int index = 0; index < length; index++) {
273 buffer->byte_at_put(index, (jbyte)unicode[index]);
274 }
275 } else {
276 for (int index = 0; index < length; index++) {
277 buffer->char_at_put(index, unicode[index]);
278 }
279 }
280
281 #ifdef ASSERT
282 {
283 ResourceMark rm;
284 char* expected = UNICODE::as_utf8(unicode, length);
285 char* actual = as_utf8_string(h_obj());
286 if (strcmp(expected, actual) != 0) {
287 tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
288 ShouldNotReachHere();
289 }
290 }
291 #endif
292
293 return h_obj;
294 }
295
296 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
297 Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
298 return h_obj();
299 }
300
301 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
302 if (utf8_str == NULL) {
303 return Handle();
304 }
305 bool has_multibyte, is_latin1;
306 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
307 if (!CompactStrings) {
308 has_multibyte = true;
309 is_latin1 = false;
310 }
311
312 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
313 if (length > 0) {
314 if (!has_multibyte) {
315 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
316 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
317 } else if (is_latin1) {
318 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
319 } else {
320 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
321 }
322 }
323
324 #ifdef ASSERT
325 // This check is too strict because the input string is not necessarily valid UTF8.
326 // For example, it may be created with arbitrary content via jni_NewStringUTF.
327 /*
328 {
329 ResourceMark rm;
330 const char* expected = utf8_str;
331 char* actual = as_utf8_string(h_obj());
332 if (strcmp(expected, actual) != 0) {
333 tty->print_cr("String conversion failure: %s --> %s", expected, actual);
334 ShouldNotReachHere();
335 }
336 }
337 */
338 #endif
339
340 return h_obj;
341 }
342
343 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
344 Handle h_obj = create_from_str(utf8_str, CHECK_0);
345 return h_obj();
346 }
347
348 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
349 const char* utf8_str = (char*)symbol->bytes();
350 int utf8_len = symbol->utf8_length();
351
352 bool has_multibyte, is_latin1;
353 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
354 if (!CompactStrings) {
355 has_multibyte = true;
356 is_latin1 = false;
357 }
358
359 Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
360 if (length > 0) {
361 if (!has_multibyte) {
362 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
363 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
364 } else if (is_latin1) {
365 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
366 } else {
367 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
368 }
369 }
370
371 #ifdef ASSERT
372 {
373 ResourceMark rm;
374 const char* expected = symbol->as_utf8();
375 char* actual = as_utf8_string(h_obj());
376 if (strncmp(expected, actual, utf8_len) != 0) {
377 tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
378 ShouldNotReachHere();
379 }
380 }
381 #endif
382
383 return h_obj;
384 }
385
386 // Converts a C string to a Java String based on current encoding
387 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
388 assert(str != NULL, "bad arguments");
389
390 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *);
391 static to_java_string_fn_t _to_java_string_fn = NULL;
392
393 if (_to_java_string_fn == NULL) {
394 void *lib_handle = os::native_java_library();
395 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
396 #if defined(_WIN32) && !defined(_WIN64)
397 if (_to_java_string_fn == NULL) {
398 // On 32 bit Windows, also try __stdcall decorated name
399 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8"));
400 }
401 #endif
402 if (_to_java_string_fn == NULL) {
403 fatal("JNU_NewStringPlatform missing");
404 }
405 }
406
407 jstring js = NULL;
408 {
409 assert(THREAD->is_Java_thread(), "must be java thread");
410 JavaThread* thread = (JavaThread*)THREAD;
411 HandleMark hm(thread);
412 ThreadToNativeFromVM ttn(thread);
413 js = (_to_java_string_fn)(thread->jni_environment(), str);
414 }
415
416 Handle native_platform_string(THREAD, JNIHandles::resolve(js));
417 JNIHandles::destroy_local(js); // destroy local JNIHandle.
418 return native_platform_string;
419 }
420
421 // Converts a Java String to a native C string that can be used for
422 // native OS calls.
423 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
424 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
425 static to_platform_string_fn_t _to_platform_string_fn = NULL;
426
427 if (_to_platform_string_fn == NULL) {
428 void *lib_handle = os::native_java_library();
429 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
430 if (_to_platform_string_fn == NULL) {
431 fatal("GetStringPlatformChars missing");
432 }
433 }
434
435 char *native_platform_string;
436 { JavaThread* thread = (JavaThread*)THREAD;
437 assert(thread->is_Java_thread(), "must be java thread");
438 JNIEnv *env = thread->jni_environment();
439 jstring js = (jstring) JNIHandles::make_local(env, java_string());
440 bool is_copy;
441 HandleMark hm(thread);
442 ThreadToNativeFromVM ttn(thread);
443 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
444 assert(is_copy == JNI_TRUE, "is_copy value changed");
445 JNIHandles::destroy_local(js);
446 }
447 return native_platform_string;
448 }
449
450 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
451 oop obj = java_string();
452 // Typical usage is to convert all '/' to '.' in string.
453 typeArrayOop value = java_lang_String::value(obj);
454 int length = java_lang_String::length(obj, value);
455 bool is_latin1 = java_lang_String::is_latin1(obj);
456
457 // First check if any from_char exist
458 int index; // Declared outside, used later
459 for (index = 0; index < length; index++) {
460 jchar c = !is_latin1 ? value->char_at(index) :
461 ((jchar) value->byte_at(index)) & 0xff;
462 if (c == from_char) {
463 break;
464 }
465 }
466 if (index == length) {
467 // No from_char, so do not copy.
468 return java_string;
469 }
470
471 // Check if result string will be latin1
472 bool to_is_latin1 = false;
473
474 // Replacement char must be latin1
475 if (CompactStrings && UNICODE::is_latin1(to_char)) {
476 if (is_latin1) {
477 // Source string is latin1 as well
478 to_is_latin1 = true;
479 } else if (!UNICODE::is_latin1(from_char)) {
480 // We are replacing an UTF16 char. Scan string to
481 // check if result can be latin1 encoded.
482 to_is_latin1 = true;
483 for (index = 0; index < length; index++) {
484 jchar c = value->char_at(index);
485 if (c != from_char && !UNICODE::is_latin1(c)) {
486 to_is_latin1 = false;
487 break;
488 }
489 }
490 }
491 }
492
493 // Create new UNICODE (or byte) buffer. Must handlize value because GC
494 // may happen during String and char array creation.
495 typeArrayHandle h_value(THREAD, value);
496 Handle string = basic_create(length, to_is_latin1, CHECK_NH);
497 typeArrayOop from_buffer = h_value();
498 typeArrayOop to_buffer = java_lang_String::value(string());
499
500 // Copy contents
501 for (index = 0; index < length; index++) {
502 jchar c = (!is_latin1) ? from_buffer->char_at(index) :
503 ((jchar) from_buffer->byte_at(index)) & 0xff;
504 if (c == from_char) {
505 c = to_char;
506 }
507 if (!to_is_latin1) {
508 to_buffer->char_at_put(index, c);
509 } else {
510 to_buffer->byte_at_put(index, (jbyte) c);
511 }
512 }
513 return string;
514 }
515
516 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
517 typeArrayOop value = java_lang_String::value(java_string);
518 length = java_lang_String::length(java_string, value);
519 bool is_latin1 = java_lang_String::is_latin1(java_string);
520
521 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
522 if (result != NULL) {
523 if (!is_latin1) {
524 for (int index = 0; index < length; index++) {
525 result[index] = value->char_at(index);
526 }
527 } else {
528 for (int index = 0; index < length; index++) {
529 result[index] = ((jchar) value->byte_at(index)) & 0xff;
530 }
531 }
532 } else {
533 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
534 }
535 return result;
536 }
537
538 unsigned int java_lang_String::hash_code(oop java_string) {
539 // The hash and hashIsZero fields are subject to a benign data race,
540 // making it crucial to ensure that any observable result of the
541 // calculation in this method stays correct under any possible read of
542 // these fields. Necessary restrictions to allow this to be correct
543 // without explicit memory fences or similar concurrency primitives is
544 // that we can ever only write to one of these two fields for a given
545 // String instance, and that the computation is idempotent and derived
546 // from immutable state
547 assert(initialized && (hash_offset > 0) && (hashIsZero_offset > 0), "Must be initialized");
548 if (java_lang_String::hash_is_set(java_string)) {
549 return java_string->int_field(hash_offset);
550 }
551
552 typeArrayOop value = java_lang_String::value(java_string);
553 int length = java_lang_String::length(java_string, value);
554 bool is_latin1 = java_lang_String::is_latin1(java_string);
555
556 unsigned int hash = 0;
557 if (length > 0) {
558 if (is_latin1) {
559 hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
560 } else {
561 hash = java_lang_String::hash_code(value->char_at_addr(0), length);
562 }
563 }
564
565 if (hash != 0) {
566 java_string->int_field_put(hash_offset, hash);
567 } else {
568 java_string->bool_field_put(hashIsZero_offset, true);
569 }
570 return hash;
571 }
572
573 char* java_lang_String::as_quoted_ascii(oop java_string) {
574 typeArrayOop value = java_lang_String::value(java_string);
575 int length = java_lang_String::length(java_string, value);
576 bool is_latin1 = java_lang_String::is_latin1(java_string);
577
578 if (length == 0) return NULL;
579
580 char* result;
581 int result_length;
582 if (!is_latin1) {
583 jchar* base = value->char_at_addr(0);
584 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
585 result = NEW_RESOURCE_ARRAY(char, result_length);
586 UNICODE::as_quoted_ascii(base, length, result, result_length);
587 } else {
588 jbyte* base = value->byte_at_addr(0);
589 result_length = UNICODE::quoted_ascii_length(base, length) + 1;
590 result = NEW_RESOURCE_ARRAY(char, result_length);
591 UNICODE::as_quoted_ascii(base, length, result, result_length);
592 }
593 assert(result_length >= length + 1, "must not be shorter");
594 assert(result_length == (int)strlen(result) + 1, "must match");
595 return result;
596 }
597
598 Symbol* java_lang_String::as_symbol(oop java_string) {
599 typeArrayOop value = java_lang_String::value(java_string);
600 int length = java_lang_String::length(java_string, value);
601 bool is_latin1 = java_lang_String::is_latin1(java_string);
602 if (!is_latin1) {
603 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
604 Symbol* sym = SymbolTable::new_symbol(base, length);
605 return sym;
606 } else {
607 ResourceMark rm;
608 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
609 const char* base = UNICODE::as_utf8(position, length);
610 Symbol* sym = SymbolTable::new_symbol(base, length);
611 return sym;
612 }
613 }
614
615 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
616 typeArrayOop value = java_lang_String::value(java_string);
617 int length = java_lang_String::length(java_string, value);
618 bool is_latin1 = java_lang_String::is_latin1(java_string);
619 if (!is_latin1) {
620 jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
621 return SymbolTable::probe_unicode(base, length);
622 } else {
623 ResourceMark rm;
624 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
625 const char* base = UNICODE::as_utf8(position, length);
626 return SymbolTable::probe(base, length);
627 }
628 }
629
630 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
631 assert(value_equals(value, java_lang_String::value(java_string)),
632 "value must be same as java_lang_String::value(java_string)");
633 int length = java_lang_String::length(java_string, value);
634 if (length == 0) {
635 return 0;
636 }
637 if (!java_lang_String::is_latin1(java_string)) {
638 return UNICODE::utf8_length(value->char_at_addr(0), length);
639 } else {
640 return UNICODE::utf8_length(value->byte_at_addr(0), length);
641 }
642 }
643
644 int java_lang_String::utf8_length(oop java_string) {
645 typeArrayOop value = java_lang_String::value(java_string);
646 return utf8_length(java_string, value);
647 }
648
649 char* java_lang_String::as_utf8_string(oop java_string) {
650 typeArrayOop value = java_lang_String::value(java_string);
651 int length = java_lang_String::length(java_string, value);
652 bool is_latin1 = java_lang_String::is_latin1(java_string);
653 if (!is_latin1) {
654 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
655 return UNICODE::as_utf8(position, length);
656 } else {
657 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
658 return UNICODE::as_utf8(position, length);
659 }
660 }
661
662 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
663 assert(value_equals(value, java_lang_String::value(java_string)),
664 "value must be same as java_lang_String::value(java_string)");
665 int length = java_lang_String::length(java_string, value);
666 bool is_latin1 = java_lang_String::is_latin1(java_string);
667 if (!is_latin1) {
668 jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
669 return UNICODE::as_utf8(position, length, buf, buflen);
670 } else {
671 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
672 return UNICODE::as_utf8(position, length, buf, buflen);
673 }
674 }
675
676 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
677 typeArrayOop value = java_lang_String::value(java_string);
678 return as_utf8_string(java_string, value, buf, buflen);
679 }
680
681 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
682 typeArrayOop value = java_lang_String::value(java_string);
683 bool is_latin1 = java_lang_String::is_latin1(java_string);
684 assert(start + len <= java_lang_String::length(java_string), "just checking");
685 if (!is_latin1) {
686 jchar* position = value->char_at_addr(start);
687 return UNICODE::as_utf8(position, len);
688 } else {
689 jbyte* position = value->byte_at_addr(start);
690 return UNICODE::as_utf8(position, len);
691 }
692 }
693
694 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
695 assert(value_equals(value, java_lang_String::value(java_string)),
696 "value must be same as java_lang_String::value(java_string)");
697 assert(start + len <= java_lang_String::length(java_string), "just checking");
698 bool is_latin1 = java_lang_String::is_latin1(java_string);
699 if (!is_latin1) {
700 jchar* position = value->char_at_addr(start);
701 return UNICODE::as_utf8(position, len, buf, buflen);
702 } else {
703 jbyte* position = value->byte_at_addr(start);
704 return UNICODE::as_utf8(position, len, buf, buflen);
705 }
706 }
707
708 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
709 assert(java_string->klass() == SystemDictionary::String_klass(),
710 "must be java_string");
711 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
712 int length = java_lang_String::length(java_string, value);
713 if (length != len) {
714 return false;
715 }
716 bool is_latin1 = java_lang_String::is_latin1(java_string);
717 if (!is_latin1) {
718 for (int i = 0; i < len; i++) {
719 if (value->char_at(i) != chars[i]) {
720 return false;
721 }
722 }
723 } else {
724 for (int i = 0; i < len; i++) {
725 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
726 return false;
727 }
728 }
729 }
730 return true;
731 }
732
733 bool java_lang_String::equals(oop str1, oop str2) {
734 assert(str1->klass() == SystemDictionary::String_klass(),
735 "must be java String");
736 assert(str2->klass() == SystemDictionary::String_klass(),
737 "must be java String");
738 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1);
739 bool is_latin1 = java_lang_String::is_latin1(str1);
740 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2);
741 bool is_latin2 = java_lang_String::is_latin1(str2);
742
743 if (is_latin1 != is_latin2) {
744 // Strings with different coders are never equal.
745 return false;
746 }
747 return value_equals(value1, value2);
748 }
749
750 void java_lang_String::print(oop java_string, outputStream* st) {
751 assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
752 typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
753
754 if (value == NULL) {
755 // This can happen if, e.g., printing a String
756 // object before its initializer has been called
757 st->print("NULL");
758 return;
759 }
760
761 int length = java_lang_String::length(java_string, value);
762 bool is_latin1 = java_lang_String::is_latin1(java_string);
763
764 st->print("\"");
765 for (int index = 0; index < length; index++) {
766 st->print("%c", (!is_latin1) ? value->char_at(index) :
767 ((jchar) value->byte_at(index)) & 0xff );
768 }
769 st->print("\"");
770 }
771
772
773 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
774 assert(mirror.not_null() && fd->is_static(), "just checking");
775 if (fd->has_initial_value()) {
776 BasicType t = fd->field_type();
777 switch (t) {
778 case T_BYTE:
779 mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
780 break;
781 case T_BOOLEAN:
782 mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
783 break;
784 case T_CHAR:
785 mirror()->char_field_put(fd->offset(), fd->int_initial_value());
786 break;
787 case T_SHORT:
788 mirror()->short_field_put(fd->offset(), fd->int_initial_value());
789 break;
790 case T_INT:
791 mirror()->int_field_put(fd->offset(), fd->int_initial_value());
792 break;
793 case T_FLOAT:
794 mirror()->float_field_put(fd->offset(), fd->float_initial_value());
795 break;
796 case T_DOUBLE:
797 mirror()->double_field_put(fd->offset(), fd->double_initial_value());
798 break;
799 case T_LONG:
800 mirror()->long_field_put(fd->offset(), fd->long_initial_value());
801 break;
802 case T_OBJECT:
803 {
804 assert(fd->signature() == vmSymbols::string_signature(),
805 "just checking");
806 if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
807 // Archive the String field and update the pointer.
808 oop s = mirror()->obj_field(fd->offset());
809 oop archived_s = StringTable::create_archived_string(s, CHECK);
810 mirror()->obj_field_put(fd->offset(), archived_s);
811 } else {
812 oop string = fd->string_initial_value(CHECK);
813 mirror()->obj_field_put(fd->offset(), string);
814 }
815 }
816 break;
817 default:
818 THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
819 "Illegal ConstantValue attribute in class file");
820 }
821 }
822 }
823
824
825 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
826 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
827
828 // If the offset was read from the shared archive, it was fixed up already
829 if (!k->is_shared()) {
830 if (k->is_instance_klass()) {
831 // During bootstrap, java.lang.Class wasn't loaded so static field
832 // offsets were computed without the size added it. Go back and
833 // update all the static field offsets to included the size.
834 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
835 if (fs.access_flags().is_static()) {
836 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
837 fs.set_offset(real_offset);
838 }
839 }
840 }
841 }
842
843 if (k->is_shared() && k->has_raw_archived_mirror()) {
844 if (HeapShared::open_archive_heap_region_mapped()) {
845 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
846 assert(present, "Missing archived mirror for %s", k->external_name());
847 return;
848 } else {
849 k->set_java_mirror_handle(NULL);
850 k->clear_has_raw_archived_mirror();
851 }
852 }
853 create_mirror(k, Handle(), Handle(), Handle(), CHECK);
854 }
855
856 void java_lang_Class::initialize_mirror_fields(Klass* k,
857 Handle mirror,
858 Handle protection_domain,
859 TRAPS) {
860 // Allocate a simple java object for a lock.
861 // This needs to be a java object because during class initialization
862 // it can be held across a java call.
863 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
864 set_init_lock(mirror(), r);
865
866 // Set protection domain also
867 set_protection_domain(mirror(), protection_domain());
868
869 // Initialize static fields
870 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
871 }
872
873 // Set the java.lang.Module module field in the java_lang_Class mirror
874 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
875 if (module.is_null()) {
876 // During startup, the module may be NULL only if java.base has not been defined yet.
877 // Put the class on the fixup_module_list to patch later when the java.lang.Module
878 // for java.base is known. But note that since we captured the NULL module another
879 // thread may have completed that initialization.
880
881 bool javabase_was_defined = false;
882 {
883 MutexLocker m1(Module_lock, THREAD);
884 // Keep list of classes needing java.base module fixup
885 if (!ModuleEntryTable::javabase_defined()) {
886 assert(k->java_mirror() != NULL, "Class's mirror is null");
887 k->class_loader_data()->inc_keep_alive();
888 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
889 fixup_module_field_list()->push(k);
890 } else {
891 javabase_was_defined = true;
892 }
893 }
894
895 // If java.base was already defined then patch this particular class with java.base.
896 if (javabase_was_defined) {
897 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
898 assert(javabase_entry != NULL && javabase_entry->module() != NULL,
899 "Setting class module field, " JAVA_BASE_NAME " should be defined");
900 Handle javabase_handle(THREAD, javabase_entry->module());
901 set_module(mirror(), javabase_handle());
902 }
903 } else {
904 assert(Universe::is_module_initialized() ||
905 (ModuleEntryTable::javabase_defined() &&
906 (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
907 "Incorrect java.lang.Module specification while creating mirror");
908 set_module(mirror(), module());
909 }
910 }
911
912 // Statically allocate fixup lists because they always get created.
913 void java_lang_Class::allocate_fixup_lists() {
914 GrowableArray<Klass*>* mirror_list =
915 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
916 set_fixup_mirror_list(mirror_list);
917
918 GrowableArray<Klass*>* module_list =
919 new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
920 set_fixup_module_field_list(module_list);
921 }
922
923 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
924 Handle module, Handle protection_domain, TRAPS) {
925 assert(k != NULL, "Use create_basic_type_mirror for primitive types");
926 assert(k->java_mirror() == NULL, "should only assign mirror once");
927
928 // Use this moment of initialization to cache modifier_flags also,
929 // to support Class.getModifiers(). Instance classes recalculate
930 // the cached flags after the class file is parsed, but before the
931 // class is put into the system dictionary.
932 int computed_modifiers = k->compute_modifier_flags(CHECK);
933 k->set_modifier_flags(computed_modifiers);
934 // Class_klass has to be loaded because it is used to allocate
935 // the mirror.
936 if (SystemDictionary::Class_klass_loaded()) {
937 // Allocate mirror (java.lang.Class instance)
938 oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
939 Handle mirror(THREAD, mirror_oop);
940 Handle comp_mirror;
941
942 // Setup indirection from mirror->klass
943 java_lang_Class::set_klass(mirror(), k);
944
945 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
946 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
947
948 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
949
950 // It might also have a component mirror. This mirror must already exist.
951 if (k->is_array_klass()) {
952 if (k->is_typeArray_klass()) {
953 BasicType type = TypeArrayKlass::cast(k)->element_type();
954 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
955 } else {
956 assert(k->is_objArray_klass(), "Must be");
957 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
958 assert(element_klass != NULL, "Must have an element klass");
959 comp_mirror = Handle(THREAD, element_klass->java_mirror());
960 }
961 assert(comp_mirror() != NULL, "must have a mirror");
962
963 // Two-way link between the array klass and its component mirror:
964 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
965 set_component_mirror(mirror(), comp_mirror());
966 // See below for ordering dependencies between field array_klass in component mirror
967 // and java_mirror in this klass.
968 } else {
969 assert(k->is_instance_klass(), "Must be");
970
971 initialize_mirror_fields(k, mirror, protection_domain, THREAD);
972 if (HAS_PENDING_EXCEPTION) {
973 // If any of the fields throws an exception like OOM remove the klass field
974 // from the mirror so GC doesn't follow it after the klass has been deallocated.
975 // This mirror looks like a primitive type, which logically it is because it
976 // it represents no class.
977 java_lang_Class::set_klass(mirror(), NULL);
978 return;
979 }
980 }
981
982 // set the classLoader field in the java_lang_Class instance
983 assert(class_loader() == k->class_loader(), "should be same");
984 set_class_loader(mirror(), class_loader());
985
986 // Setup indirection from klass->mirror
987 // after any exceptions can happen during allocations.
988 k->set_java_mirror(mirror);
989
990 // Set the module field in the java_lang_Class instance. This must be done
991 // after the mirror is set.
992 set_mirror_module_field(k, mirror, module, THREAD);
993
994 if (comp_mirror() != NULL) {
995 // Set after k->java_mirror() is published, because compiled code running
996 // concurrently doesn't expect a k to have a null java_mirror.
997 release_set_array_klass(comp_mirror(), k);
998 }
999 } else {
1000 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1001 fixup_mirror_list()->push(k);
1002 }
1003 }
1004
1005 #if INCLUDE_CDS_JAVA_HEAP
1006 // Clears mirror fields. Static final fields with initial values are reloaded
1007 // from constant pool. The object identity hash is in the object header and is
1008 // not affected.
1009 class ResetMirrorField: public FieldClosure {
1010 private:
1011 Handle _m;
1012
1013 public:
1014 ResetMirrorField(Handle mirror) : _m(mirror) {}
1015
1016 void do_field(fieldDescriptor* fd) {
1017 assert(DumpSharedSpaces, "dump time only");
1018 assert(_m.not_null(), "Mirror cannot be NULL");
1019
1020 if (fd->is_static() && fd->has_initial_value()) {
1021 initialize_static_field(fd, _m, Thread::current());
1022 return;
1023 }
1024
1025 BasicType ft = fd->field_type();
1026 switch (ft) {
1027 case T_BYTE:
1028 _m()->byte_field_put(fd->offset(), 0);
1029 break;
1030 case T_CHAR:
1031 _m()->char_field_put(fd->offset(), 0);
1032 break;
1033 case T_DOUBLE:
1034 _m()->double_field_put(fd->offset(), 0);
1035 break;
1036 case T_FLOAT:
1037 _m()->float_field_put(fd->offset(), 0);
1038 break;
1039 case T_INT:
1040 _m()->int_field_put(fd->offset(), 0);
1041 break;
1042 case T_LONG:
1043 _m()->long_field_put(fd->offset(), 0);
1044 break;
1045 case T_SHORT:
1046 _m()->short_field_put(fd->offset(), 0);
1047 break;
1048 case T_BOOLEAN:
1049 _m()->bool_field_put(fd->offset(), false);
1050 break;
1051 case T_ARRAY:
1052 case T_OBJECT: {
1053 // It might be useful to cache the String field, but
1054 // for now just clear out any reference field
1055 oop o = _m()->obj_field(fd->offset());
1056 _m()->obj_field_put(fd->offset(), NULL);
1057 break;
1058 }
1059 default:
1060 ShouldNotReachHere();
1061 break;
1062 }
1063 }
1064 };
1065
1066 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1067 assert(HeapShared::is_heap_object_archiving_allowed(),
1068 "HeapShared::is_heap_object_archiving_allowed() must be true");
1069
1070 for (int t = 0; t <= T_VOID; t++) {
1071 oop m = Universe::_mirrors[t];
1072 if (m != NULL) {
1073 // Update the field at _array_klass_offset to point to the relocated array klass.
1074 oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1075 assert(archived_m != NULL, "sanity");
1076 Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1077 assert(ak != NULL || t == T_VOID, "should not be NULL");
1078 if (ak != NULL) {
1079 Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak);
1080 archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1081 }
1082
1083 // Clear the fields. Just to be safe
1084 Klass *k = m->klass();
1085 Handle archived_mirror_h(THREAD, archived_m);
1086 ResetMirrorField reset(archived_mirror_h);
1087 InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1088
1089 log_trace(cds, heap, mirror)(
1090 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1091 type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1092
1093 Universe::_mirrors[t] = archived_m;
1094 }
1095 }
1096
1097 assert(Universe::_mirrors[T_INT] != NULL &&
1098 Universe::_mirrors[T_FLOAT] != NULL &&
1099 Universe::_mirrors[T_DOUBLE] != NULL &&
1100 Universe::_mirrors[T_BYTE] != NULL &&
1101 Universe::_mirrors[T_BOOLEAN] != NULL &&
1102 Universe::_mirrors[T_CHAR] != NULL &&
1103 Universe::_mirrors[T_LONG] != NULL &&
1104 Universe::_mirrors[T_SHORT] != NULL &&
1105 Universe::_mirrors[T_VOID] != NULL, "sanity");
1106
1107 Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1108 Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1109 Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1110 Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1111 Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1112 Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1113 Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1114 Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1115 Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1116 }
1117
1118 //
1119 // After the mirror object is successfully archived, the archived
1120 // klass is set with _has_archived_raw_mirror flag.
1121 //
1122 // The _has_archived_raw_mirror flag is cleared at runtime when the
1123 // archived mirror is restored. If archived java heap data cannot
1124 // be used at runtime, new mirror object is created for the shared
1125 // class. The _has_archived_raw_mirror is cleared also during the process.
1126 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1127 assert(HeapShared::is_heap_object_archiving_allowed(),
1128 "HeapShared::is_heap_object_archiving_allowed() must be true");
1129
1130 // Mirror is already archived
1131 if (k->has_raw_archived_mirror()) {
1132 assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1133 return k->archived_java_mirror_raw();
1134 }
1135
1136 // No mirror
1137 oop mirror = k->java_mirror();
1138 if (mirror == NULL) {
1139 return NULL;
1140 }
1141
1142 if (k->is_instance_klass()) {
1143 InstanceKlass *ik = InstanceKlass::cast(k);
1144 assert(ik->signers() == NULL, "class with signer should have been excluded");
1145
1146 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1147 ik->is_shared_app_class())) {
1148 // Archiving mirror for classes from non-builtin loaders is not
1149 // supported. Clear the _java_mirror within the archived class.
1150 k->set_java_mirror_handle(NULL);
1151 return NULL;
1152 }
1153 }
1154
1155 // Now start archiving the mirror object
1156 oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1157 if (archived_mirror == NULL) {
1158 return NULL;
1159 }
1160
1161 archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1162 if (archived_mirror == NULL) {
1163 return NULL;
1164 }
1165
1166 k->set_archived_java_mirror_raw(archived_mirror);
1167
1168 k->set_has_raw_archived_mirror();
1169
1170 ResourceMark rm;
1171 log_trace(cds, heap, mirror)(
1172 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1173 k->external_name(), p2i(mirror), p2i(archived_mirror));
1174
1175 return archived_mirror;
1176 }
1177
1178 // The process is based on create_mirror().
1179 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1180 oop archived_mirror,
1181 Thread *THREAD) {
1182 // Clear nonstatic fields in archived mirror. Some of the fields will be set
1183 // to archived metadata and objects below.
1184 Klass *c = archived_mirror->klass();
1185 Handle archived_mirror_h(THREAD, archived_mirror);
1186 ResetMirrorField reset(archived_mirror_h);
1187 InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1188
1189 if (k->is_array_klass()) {
1190 oop archived_comp_mirror;
1191 if (k->is_typeArray_klass()) {
1192 // The primitive type mirrors are already archived. Get the archived mirror.
1193 oop comp_mirror = java_lang_Class::component_mirror(mirror);
1194 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1195 assert(archived_comp_mirror != NULL, "Must be");
1196 } else {
1197 assert(k->is_objArray_klass(), "Must be");
1198 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1199 assert(element_klass != NULL, "Must have an element klass");
1200 archived_comp_mirror = archive_mirror(element_klass, THREAD);
1201 if (archived_comp_mirror == NULL) {
1202 return NULL;
1203 }
1204 }
1205 java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1206 } else {
1207 assert(k->is_instance_klass(), "Must be");
1208
1209 // Reset local static fields in the mirror
1210 InstanceKlass::cast(k)->do_local_static_fields(&reset);
1211
1212 java_lang_Class:set_init_lock(archived_mirror, NULL);
1213
1214 set_protection_domain(archived_mirror, NULL);
1215 }
1216
1217 // clear class loader and mirror_module_field
1218 set_class_loader(archived_mirror, NULL);
1219 set_module(archived_mirror, NULL);
1220
1221 // The archived mirror's field at _klass_offset is still pointing to the original
1222 // klass. Updated the field in the archived mirror to point to the relocated
1223 // klass in the archive.
1224 Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror));
1225 log_debug(cds, heap, mirror)(
1226 "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1227 p2i(as_Klass(mirror)), p2i(reloc_k));
1228 archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1229
1230 // The field at _array_klass_offset is pointing to the original one dimension
1231 // higher array klass if exists. Relocate the pointer.
1232 Klass *arr = array_klass_acquire(mirror);
1233 if (arr != NULL) {
1234 Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr);
1235 log_debug(cds, heap, mirror)(
1236 "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1237 p2i(arr), p2i(reloc_arr));
1238 archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1239 }
1240 return archived_mirror;
1241 }
1242
1243 // Returns true if the mirror is updated, false if no archived mirror
1244 // data is present. After the archived mirror object is restored, the
1245 // shared klass' _has_raw_archived_mirror flag is cleared.
1246 bool java_lang_Class::restore_archived_mirror(Klass *k,
1247 Handle class_loader, Handle module,
1248 Handle protection_domain, TRAPS) {
1249 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1250 // see more details in SystemDictionary::resolve_well_known_classes().
1251 if (!SystemDictionary::Class_klass_loaded()) {
1252 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1253 fixup_mirror_list()->push(k);
1254 return true;
1255 }
1256
1257 oop m = HeapShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1258
1259 if (m == NULL) {
1260 return false;
1261 }
1262
1263 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1264
1265 // mirror is archived, restore
1266 assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1267 Handle mirror(THREAD, m);
1268
1269 if (!k->is_array_klass()) {
1270 // - local static final fields with initial values were initialized at dump time
1271
1272 // create the init_lock
1273 typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1274 set_init_lock(mirror(), r);
1275
1276 if (protection_domain.not_null()) {
1277 set_protection_domain(mirror(), protection_domain());
1278 }
1279 }
1280
1281 assert(class_loader() == k->class_loader(), "should be same");
1282 if (class_loader.not_null()) {
1283 set_class_loader(mirror(), class_loader());
1284 }
1285
1286 k->set_java_mirror(mirror);
1287 k->clear_has_raw_archived_mirror();
1288
1289 set_mirror_module_field(k, mirror, module, THREAD);
1290
1291 ResourceMark rm;
1292 log_trace(cds, heap, mirror)(
1293 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1294
1295 return true;
1296 }
1297 #endif // INCLUDE_CDS_JAVA_HEAP
1298
1299 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1300 assert(_module_offset != 0, "must have been computed already");
1301 java_lang_Class::set_module(k->java_mirror(), module());
1302 }
1303
1304 int java_lang_Class::oop_size(oop java_class) {
1305 assert(_oop_size_offset != 0, "must be set");
1306 int size = java_class->int_field(_oop_size_offset);
1307 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1308 return size;
1309 }
1310
1311
1312 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1313 assert(_oop_size_offset != 0, "must be set");
1314 assert(size > 0, "Oop size must be greater than zero, not %d", size);
1315 *(int*)(((char*)java_class) + _oop_size_offset) = size;
1316 }
1317
1318 int java_lang_Class::static_oop_field_count(oop java_class) {
1319 assert(_static_oop_field_count_offset != 0, "must be set");
1320 return java_class->int_field(_static_oop_field_count_offset);
1321 }
1322
1323 int java_lang_Class::static_oop_field_count_raw(oop java_class) {
1324 assert(_static_oop_field_count_offset != 0, "must be set");
1325 return java_class->int_field_raw(_static_oop_field_count_offset);
1326 }
1327
1328 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1329 assert(_static_oop_field_count_offset != 0, "must be set");
1330 java_class->int_field_put(_static_oop_field_count_offset, size);
1331 }
1332
1333 oop java_lang_Class::protection_domain(oop java_class) {
1334 assert(_protection_domain_offset != 0, "must be set");
1335 return java_class->obj_field(_protection_domain_offset);
1336 }
1337 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1338 assert(_protection_domain_offset != 0, "must be set");
1339 java_class->obj_field_put(_protection_domain_offset, pd);
1340 }
1341
1342 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1343 assert(_component_mirror_offset != 0, "must be set");
1344 java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1345 }
1346 oop java_lang_Class::component_mirror(oop java_class) {
1347 assert(_component_mirror_offset != 0, "must be set");
1348 return java_class->obj_field(_component_mirror_offset);
1349 }
1350
1351 oop java_lang_Class::init_lock(oop java_class) {
1352 assert(_init_lock_offset != 0, "must be set");
1353 return java_class->obj_field(_init_lock_offset);
1354 }
1355 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1356 assert(_init_lock_offset != 0, "must be set");
1357 java_class->obj_field_put(_init_lock_offset, init_lock);
1358 }
1359
1360 objArrayOop java_lang_Class::signers(oop java_class) {
1361 assert(_signers_offset != 0, "must be set");
1362 return (objArrayOop)java_class->obj_field(_signers_offset);
1363 }
1364 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1365 assert(_signers_offset != 0, "must be set");
1366 java_class->obj_field_put(_signers_offset, (oop)signers);
1367 }
1368
1369
1370 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1371 // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
1372 if (_class_loader_offset != 0) {
1373 java_class->obj_field_put(_class_loader_offset, loader);
1374 }
1375 }
1376
1377 oop java_lang_Class::class_loader(oop java_class) {
1378 assert(_class_loader_offset != 0, "must be set");
1379 return java_class->obj_field(_class_loader_offset);
1380 }
1381
1382 oop java_lang_Class::module(oop java_class) {
1383 assert(_module_offset != 0, "must be set");
1384 return java_class->obj_field(_module_offset);
1385 }
1386
1387 void java_lang_Class::set_module(oop java_class, oop module) {
1388 assert(_module_offset != 0, "must be set");
1389 java_class->obj_field_put(_module_offset, module);
1390 }
1391
1392 oop java_lang_Class::name(Handle java_class, TRAPS) {
1393 assert(_name_offset != 0, "must be set");
1394 oop o = java_class->obj_field(_name_offset);
1395 if (o == NULL) {
1396 o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1397 java_class->obj_field_put(_name_offset, o);
1398 }
1399 return o;
1400 }
1401
1402 oop java_lang_Class::source_file(oop java_class) {
1403 assert(_source_file_offset != 0, "must be set");
1404 return java_class->obj_field(_source_file_offset);
1405 }
1406
1407 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1408 assert(_source_file_offset != 0, "must be set");
1409 java_class->obj_field_put(_source_file_offset, source_file);
1410 }
1411
1412 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1413 // This should be improved by adding a field at the Java level or by
1414 // introducing a new VM klass (see comment in ClassFileParser)
1415 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
1416 if (type != T_VOID) {
1417 Klass* aklass = Universe::typeArrayKlassObj(type);
1418 assert(aklass != NULL, "correct bootstrap");
1419 release_set_array_klass(java_class, aklass);
1420 }
1421 #ifdef ASSERT
1422 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1423 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1424 #endif
1425 return java_class;
1426 }
1427
1428
1429 Klass* java_lang_Class::as_Klass(oop java_class) {
1430 //%note memory_2
1431 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1432 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1433 assert(k == NULL || k->is_klass(), "type check");
1434 return k;
1435 }
1436
1437 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1438 //%note memory_2
1439 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1440 Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1441 assert(k == NULL || k->is_klass(), "type check");
1442 return k;
1443 }
1444
1445
1446 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1447 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1448 java_class->metadata_field_put(_klass_offset, klass);
1449 }
1450
1451
1452 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1453 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1454 Symbol* name = NULL;
1455 bool is_instance = false;
1456 if (is_primitive(java_class)) {
1457 name = vmSymbols::type_signature(primitive_type(java_class));
1458 } else {
1459 Klass* k = as_Klass(java_class);
1460 is_instance = k->is_instance_klass();
1461 name = k->name();
1462 }
1463 if (name == NULL) {
1464 st->print("<null>");
1465 return;
1466 }
1467 if (is_instance) st->print("L");
1468 st->write((char*) name->base(), (int) name->utf8_length());
1469 if (is_instance) st->print(";");
1470 }
1471
1472 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1473 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1474 Symbol* name;
1475 if (is_primitive(java_class)) {
1476 name = vmSymbols::type_signature(primitive_type(java_class));
1477 // Because this can create a new symbol, the caller has to decrement
1478 // the refcount, so make adjustment here and below for symbols returned
1479 // that are not created or incremented due to a successful lookup.
1480 name->increment_refcount();
1481 } else {
1482 Klass* k = as_Klass(java_class);
1483 if (!k->is_instance_klass()) {
1484 name = k->name();
1485 name->increment_refcount();
1486 } else {
1487 ResourceMark rm;
1488 const char* sigstr = k->signature_name();
1489 int siglen = (int) strlen(sigstr);
1490 if (!intern_if_not_found) {
1491 name = SymbolTable::probe(sigstr, siglen);
1492 } else {
1493 name = SymbolTable::new_symbol(sigstr, siglen);
1494 }
1495 }
1496 }
1497 return name;
1498 }
1499
1500 // Returns the Java name for this Java mirror (Resource allocated)
1501 // See Klass::external_name().
1502 // For primitive type Java mirrors, its type name is returned.
1503 const char* java_lang_Class::as_external_name(oop java_class) {
1504 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1505 const char* name = NULL;
1506 if (is_primitive(java_class)) {
1507 name = type2name(primitive_type(java_class));
1508 } else {
1509 name = as_Klass(java_class)->external_name();
1510 }
1511 if (name == NULL) {
1512 name = "<null>";
1513 }
1514 return name;
1515 }
1516
1517 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1518 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1519 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1520 return k;
1521 }
1522
1523
1524 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1525 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1526 java_class->release_metadata_field_put(_array_klass_offset, klass);
1527 }
1528
1529
1530 BasicType java_lang_Class::primitive_type(oop java_class) {
1531 assert(java_lang_Class::is_primitive(java_class), "just checking");
1532 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1533 BasicType type = T_VOID;
1534 if (ak != NULL) {
1535 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1536 type = ArrayKlass::cast(ak)->element_type();
1537 } else {
1538 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1539 }
1540 assert(Universe::java_mirror(type) == java_class, "must be consistent");
1541 return type;
1542 }
1543
1544 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1545 assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1546 if (is_primitive(java_class)) {
1547 if (reference_klass != NULL)
1548 (*reference_klass) = NULL;
1549 return primitive_type(java_class);
1550 } else {
1551 if (reference_klass != NULL)
1552 (*reference_klass) = as_Klass(java_class);
1553 return T_OBJECT;
1554 }
1555 }
1556
1557
1558 oop java_lang_Class::primitive_mirror(BasicType t) {
1559 oop mirror = Universe::java_mirror(t);
1560 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1561 assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1562 return mirror;
1563 }
1564
1565 bool java_lang_Class::offsets_computed = false;
1566 int java_lang_Class::classRedefinedCount_offset = -1;
1567
1568 #define CLASS_FIELDS_DO(macro) \
1569 macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1570 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1571 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1572 macro(_module_offset, k, "module", module_signature, false); \
1573 macro(_name_offset, k, "name", string_signature, false); \
1574
1575 void java_lang_Class::compute_offsets() {
1576 if (offsets_computed) {
1577 return;
1578 }
1579
1580 offsets_computed = true;
1581
1582 InstanceKlass* k = SystemDictionary::Class_klass();
1583 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1584
1585 // Init lock is a C union with component_mirror. Only instanceKlass mirrors have
1586 // init_lock and only ArrayKlass mirrors have component_mirror. Since both are oops
1587 // GC treats them the same.
1588 _init_lock_offset = _component_mirror_offset;
1589
1590 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1591 }
1592
1593 #if INCLUDE_CDS
1594 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1595 f->do_bool(&offsets_computed);
1596 f->do_u4((u4*)&_init_lock_offset);
1597
1598 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1599
1600 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1601 }
1602 #endif
1603
1604 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1605 if (classRedefinedCount_offset == -1) {
1606 // If we don't have an offset for it then just return -1 as a marker.
1607 return -1;
1608 }
1609
1610 return the_class_mirror->int_field(classRedefinedCount_offset);
1611 }
1612
1613 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1614 if (classRedefinedCount_offset == -1) {
1615 // If we don't have an offset for it then nothing to set.
1616 return;
1617 }
1618
1619 the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1620 }
1621
1622
1623 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1624 // platform thread structure, and a eetop offset which was used for thread
1625 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1626 // merged, so in the HotSpot VM we just use the eetop field for the thread
1627 // instead of the privateInfo_offset.
1628 //
1629 // Note: The stackSize field is only present starting in 1.4.
1630
1631 int java_lang_Thread::_name_offset = 0;
1632 int java_lang_Thread::_group_offset = 0;
1633 int java_lang_Thread::_contextClassLoader_offset = 0;
1634 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1635 int java_lang_Thread::_priority_offset = 0;
1636 int java_lang_Thread::_eetop_offset = 0;
1637 int java_lang_Thread::_daemon_offset = 0;
1638 int java_lang_Thread::_stillborn_offset = 0;
1639 int java_lang_Thread::_stackSize_offset = 0;
1640 int java_lang_Thread::_tid_offset = 0;
1641 int java_lang_Thread::_thread_status_offset = 0;
1642 int java_lang_Thread::_park_blocker_offset = 0;
1643
1644 #define THREAD_FIELDS_DO(macro) \
1645 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1646 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \
1647 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1648 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1649 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \
1650 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1651 macro(_eetop_offset, k, "eetop", long_signature, false); \
1652 macro(_stillborn_offset, k, "stillborn", bool_signature, false); \
1653 macro(_stackSize_offset, k, "stackSize", long_signature, false); \
1654 macro(_tid_offset, k, "tid", long_signature, false); \
1655 macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1656 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false)
1657
1658 void java_lang_Thread::compute_offsets() {
1659 assert(_group_offset == 0, "offsets should be initialized only once");
1660
1661 InstanceKlass* k = SystemDictionary::Thread_klass();
1662 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1663 }
1664
1665 #if INCLUDE_CDS
1666 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1667 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1668 }
1669 #endif
1670
1671 JavaThread* java_lang_Thread::thread(oop java_thread) {
1672 return (JavaThread*)java_thread->address_field(_eetop_offset);
1673 }
1674
1675
1676 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1677 java_thread->address_field_put(_eetop_offset, (address)thread);
1678 }
1679
1680
1681 oop java_lang_Thread::name(oop java_thread) {
1682 return java_thread->obj_field(_name_offset);
1683 }
1684
1685
1686 void java_lang_Thread::set_name(oop java_thread, oop name) {
1687 java_thread->obj_field_put(_name_offset, name);
1688 }
1689
1690
1691 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1692 return (ThreadPriority)java_thread->int_field(_priority_offset);
1693 }
1694
1695
1696 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1697 java_thread->int_field_put(_priority_offset, priority);
1698 }
1699
1700
1701 oop java_lang_Thread::threadGroup(oop java_thread) {
1702 return java_thread->obj_field(_group_offset);
1703 }
1704
1705
1706 bool java_lang_Thread::is_stillborn(oop java_thread) {
1707 return java_thread->bool_field(_stillborn_offset) != 0;
1708 }
1709
1710
1711 // We never have reason to turn the stillborn bit off
1712 void java_lang_Thread::set_stillborn(oop java_thread) {
1713 java_thread->bool_field_put(_stillborn_offset, true);
1714 }
1715
1716
1717 bool java_lang_Thread::is_alive(oop java_thread) {
1718 JavaThread* thr = java_lang_Thread::thread(java_thread);
1719 return (thr != NULL);
1720 }
1721
1722
1723 bool java_lang_Thread::is_daemon(oop java_thread) {
1724 return java_thread->bool_field(_daemon_offset) != 0;
1725 }
1726
1727
1728 void java_lang_Thread::set_daemon(oop java_thread) {
1729 java_thread->bool_field_put(_daemon_offset, true);
1730 }
1731
1732 oop java_lang_Thread::context_class_loader(oop java_thread) {
1733 return java_thread->obj_field(_contextClassLoader_offset);
1734 }
1735
1736 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1737 return java_thread->obj_field(_inheritedAccessControlContext_offset);
1738 }
1739
1740
1741 jlong java_lang_Thread::stackSize(oop java_thread) {
1742 return java_thread->long_field(_stackSize_offset);
1743 }
1744
1745 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1746 void java_lang_Thread::set_thread_status(oop java_thread,
1747 java_lang_Thread::ThreadStatus status) {
1748 java_thread->int_field_put(_thread_status_offset, status);
1749 }
1750
1751 // Read thread status value from threadStatus field in java.lang.Thread java class.
1752 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1753 // Make sure the caller is operating on behalf of the VM or is
1754 // running VM code (state == _thread_in_vm).
1755 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1756 JavaThread::current()->thread_state() == _thread_in_vm,
1757 "Java Thread is not running in vm");
1758 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1759 }
1760
1761
1762 jlong java_lang_Thread::thread_id(oop java_thread) {
1763 return java_thread->long_field(_tid_offset);
1764 }
1765
1766 oop java_lang_Thread::park_blocker(oop java_thread) {
1767 return java_thread->obj_field(_park_blocker_offset);
1768 }
1769
1770 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1771 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1772 switch (status) {
1773 case NEW : return "NEW";
1774 case RUNNABLE : return "RUNNABLE";
1775 case SLEEPING : return "TIMED_WAITING (sleeping)";
1776 case IN_OBJECT_WAIT : return "WAITING (on object monitor)";
1777 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
1778 case PARKED : return "WAITING (parking)";
1779 case PARKED_TIMED : return "TIMED_WAITING (parking)";
1780 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1781 case TERMINATED : return "TERMINATED";
1782 default : return "UNKNOWN";
1783 };
1784 }
1785 int java_lang_ThreadGroup::_parent_offset = 0;
1786 int java_lang_ThreadGroup::_name_offset = 0;
1787 int java_lang_ThreadGroup::_threads_offset = 0;
1788 int java_lang_ThreadGroup::_groups_offset = 0;
1789 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1790 int java_lang_ThreadGroup::_destroyed_offset = 0;
1791 int java_lang_ThreadGroup::_daemon_offset = 0;
1792 int java_lang_ThreadGroup::_nthreads_offset = 0;
1793 int java_lang_ThreadGroup::_ngroups_offset = 0;
1794
1795 oop java_lang_ThreadGroup::parent(oop java_thread_group) {
1796 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1797 return java_thread_group->obj_field(_parent_offset);
1798 }
1799
1800 // ("name as oop" accessor is not necessary)
1801
1802 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1803 oop name = java_thread_group->obj_field(_name_offset);
1804 // ThreadGroup.name can be null
1805 if (name != NULL) {
1806 return java_lang_String::as_utf8_string(name);
1807 }
1808 return NULL;
1809 }
1810
1811 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1812 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1813 return java_thread_group->int_field(_nthreads_offset);
1814 }
1815
1816 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1817 oop threads = java_thread_group->obj_field(_threads_offset);
1818 assert(threads != NULL, "threadgroups should have threads");
1819 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1820 return objArrayOop(threads);
1821 }
1822
1823 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1824 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1825 return java_thread_group->int_field(_ngroups_offset);
1826 }
1827
1828 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1829 oop groups = java_thread_group->obj_field(_groups_offset);
1830 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1831 return objArrayOop(groups);
1832 }
1833
1834 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1835 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1836 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1837 }
1838
1839 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1840 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1841 return java_thread_group->bool_field(_destroyed_offset) != 0;
1842 }
1843
1844 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1845 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1846 return java_thread_group->bool_field(_daemon_offset) != 0;
1847 }
1848
1849 #define THREADGROUP_FIELDS_DO(macro) \
1850 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \
1851 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
1852 macro(_threads_offset, k, vmSymbols::threads_name(), thread_array_signature, false); \
1853 macro(_groups_offset, k, vmSymbols::groups_name(), threadgroup_array_signature, false); \
1854 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \
1855 macro(_destroyed_offset, k, vmSymbols::destroyed_name(), bool_signature, false); \
1856 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \
1857 macro(_nthreads_offset, k, vmSymbols::nthreads_name(), int_signature, false); \
1858 macro(_ngroups_offset, k, vmSymbols::ngroups_name(), int_signature, false)
1859
1860 void java_lang_ThreadGroup::compute_offsets() {
1861 assert(_parent_offset == 0, "offsets should be initialized only once");
1862
1863 InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1864 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1865 }
1866
1867 #if INCLUDE_CDS
1868 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1869 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1870 }
1871 #endif
1872
1873 #define THROWABLE_FIELDS_DO(macro) \
1874 macro(backtrace_offset, k, "backtrace", object_signature, false); \
1875 macro(detailMessage_offset, k, "detailMessage", string_signature, false); \
1876 macro(stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \
1877 macro(depth_offset, k, "depth", int_signature, false); \
1878 macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1879
1880 void java_lang_Throwable::compute_offsets() {
1881 InstanceKlass* k = SystemDictionary::Throwable_klass();
1882 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1883 }
1884
1885 #if INCLUDE_CDS
1886 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1887 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1888 }
1889 #endif
1890
1891 oop java_lang_Throwable::unassigned_stacktrace() {
1892 InstanceKlass* ik = SystemDictionary::Throwable_klass();
1893 oop base = ik->static_field_base_raw();
1894 return base->obj_field(static_unassigned_stacktrace_offset);
1895 }
1896
1897 oop java_lang_Throwable::backtrace(oop throwable) {
1898 return throwable->obj_field_acquire(backtrace_offset);
1899 }
1900
1901
1902 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1903 throwable->release_obj_field_put(backtrace_offset, value);
1904 }
1905
1906 int java_lang_Throwable::depth(oop throwable) {
1907 return throwable->int_field(depth_offset);
1908 }
1909
1910 void java_lang_Throwable::set_depth(oop throwable, int value) {
1911 throwable->int_field_put(depth_offset, value);
1912 }
1913
1914 oop java_lang_Throwable::message(oop throwable) {
1915 return throwable->obj_field(detailMessage_offset);
1916 }
1917
1918
1919 // Return Symbol for detailed_message or NULL
1920 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1921 PRESERVE_EXCEPTION_MARK; // Keep original exception
1922 oop detailed_message = java_lang_Throwable::message(throwable);
1923 if (detailed_message != NULL) {
1924 return java_lang_String::as_symbol(detailed_message);
1925 }
1926 return NULL;
1927 }
1928
1929 void java_lang_Throwable::set_message(oop throwable, oop value) {
1930 throwable->obj_field_put(detailMessage_offset, value);
1931 }
1932
1933
1934 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1935 throwable->obj_field_put(stackTrace_offset, st_element_array);
1936 }
1937
1938 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1939 set_stacktrace(throwable, NULL);
1940 }
1941
1942
1943 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1944 ResourceMark rm;
1945 Klass* k = throwable->klass();
1946 assert(k != NULL, "just checking");
1947 st->print("%s", k->external_name());
1948 oop msg = message(throwable);
1949 if (msg != NULL) {
1950 st->print(": %s", java_lang_String::as_utf8_string(msg));
1951 }
1952 }
1953
1954 // After this many redefines, the stack trace is unreliable.
1955 const int MAX_VERSION = USHRT_MAX;
1956
1957 static inline bool version_matches(Method* method, int version) {
1958 assert(version < MAX_VERSION, "version is too big");
1959 return method != NULL && (method->constants()->version() == version);
1960 }
1961
1962 // This class provides a simple wrapper over the internal structure of
1963 // exception backtrace to insulate users of the backtrace from needing
1964 // to know what it looks like.
1965 class BacktraceBuilder: public StackObj {
1966 friend class BacktraceIterator;
1967 private:
1968 Handle _backtrace;
1969 objArrayOop _head;
1970 typeArrayOop _methods;
1971 typeArrayOop _bcis;
1972 objArrayOop _mirrors;
1973 typeArrayOop _names; // Needed to insulate method name against redefinition.
1974 // This is set to a java.lang.Boolean(true) if the top frame
1975 // of the backtrace is omitted because it shall be hidden.
1976 // Else it is null.
1977 oop _has_hidden_top_frame;
1978 int _index;
1979 NoSafepointVerifier _nsv;
1980
1981 enum {
1982 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1983 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1984 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1985 trace_names_offset = java_lang_Throwable::trace_names_offset,
1986 trace_next_offset = java_lang_Throwable::trace_next_offset,
1987 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
1988 trace_size = java_lang_Throwable::trace_size,
1989 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1990 };
1991
1992 // get info out of chunks
1993 static typeArrayOop get_methods(objArrayHandle chunk) {
1994 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1995 assert(methods != NULL, "method array should be initialized in backtrace");
1996 return methods;
1997 }
1998 static typeArrayOop get_bcis(objArrayHandle chunk) {
1999 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2000 assert(bcis != NULL, "bci array should be initialized in backtrace");
2001 return bcis;
2002 }
2003 static objArrayOop get_mirrors(objArrayHandle chunk) {
2004 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2005 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2006 return mirrors;
2007 }
2008 static typeArrayOop get_names(objArrayHandle chunk) {
2009 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2010 assert(names != NULL, "names array should be initialized in backtrace");
2011 return names;
2012 }
2013 static oop get_has_hidden_top_frame(objArrayHandle chunk) {
2014 oop hidden = chunk->obj_at(trace_hidden_offset);
2015 return hidden;
2016 }
2017
2018 public:
2019
2020 // constructor for new backtrace
2021 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(NULL) {
2022 expand(CHECK);
2023 _backtrace = Handle(THREAD, _head);
2024 _index = 0;
2025 }
2026
2027 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2028 _methods = get_methods(backtrace);
2029 _bcis = get_bcis(backtrace);
2030 _mirrors = get_mirrors(backtrace);
2031 _names = get_names(backtrace);
2032 _has_hidden_top_frame = get_has_hidden_top_frame(backtrace);
2033 assert(_methods->length() == _bcis->length() &&
2034 _methods->length() == _mirrors->length() &&
2035 _mirrors->length() == _names->length(),
2036 "method and source information arrays should match");
2037
2038 // head is the preallocated backtrace
2039 _head = backtrace();
2040 _backtrace = Handle(thread, _head);
2041 _index = 0;
2042 }
2043
2044 void expand(TRAPS) {
2045 objArrayHandle old_head(THREAD, _head);
2046 PauseNoSafepointVerifier pnsv(&_nsv);
2047
2048 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2049 objArrayHandle new_head(THREAD, head);
2050
2051 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2052 typeArrayHandle new_methods(THREAD, methods);
2053
2054 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2055 typeArrayHandle new_bcis(THREAD, bcis);
2056
2057 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2058 objArrayHandle new_mirrors(THREAD, mirrors);
2059
2060 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2061 typeArrayHandle new_names(THREAD, names);
2062
2063 if (!old_head.is_null()) {
2064 old_head->obj_at_put(trace_next_offset, new_head());
2065 }
2066 new_head->obj_at_put(trace_methods_offset, new_methods());
2067 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2068 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2069 new_head->obj_at_put(trace_names_offset, new_names());
2070 new_head->obj_at_put(trace_hidden_offset, NULL);
2071
2072 _head = new_head();
2073 _methods = new_methods();
2074 _bcis = new_bcis();
2075 _mirrors = new_mirrors();
2076 _names = new_names();
2077 _index = 0;
2078 }
2079
2080 oop backtrace() {
2081 return _backtrace();
2082 }
2083
2084 inline void push(Method* method, int bci, TRAPS) {
2085 // Smear the -1 bci to 0 since the array only holds unsigned
2086 // shorts. The later line number lookup would just smear the -1
2087 // to a 0 even if it could be recorded.
2088 if (bci == SynchronizationEntryBCI) bci = 0;
2089
2090 if (_index >= trace_chunk_size) {
2091 methodHandle mhandle(THREAD, method);
2092 expand(CHECK);
2093 method = mhandle();
2094 }
2095
2096 _methods->ushort_at_put(_index, method->orig_method_idnum());
2097 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2098
2099 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2100 // klass owning the symbols alive so their refcounts aren't decremented.
2101 Symbol* name = method->name();
2102 _names->symbol_at_put(_index, name);
2103
2104 // We need to save the mirrors in the backtrace to keep the class
2105 // from being unloaded while we still have this stack trace.
2106 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2107 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2108 _index++;
2109 }
2110
2111 void set_has_hidden_top_frame(TRAPS) {
2112 if (_has_hidden_top_frame == NULL) {
2113 jvalue prim;
2114 prim.z = 1;
2115 PauseNoSafepointVerifier pnsv(&_nsv);
2116 _has_hidden_top_frame = java_lang_boxing_object::create(T_BOOLEAN, &prim, CHECK);
2117 _head->obj_at_put(trace_hidden_offset, _has_hidden_top_frame);
2118 }
2119 }
2120
2121 };
2122
2123 struct BacktraceElement : public StackObj {
2124 int _method_id;
2125 int _bci;
2126 int _version;
2127 Symbol* _name;
2128 Handle _mirror;
2129 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2130 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2131 };
2132
2133 class BacktraceIterator : public StackObj {
2134 int _index;
2135 objArrayHandle _result;
2136 objArrayHandle _mirrors;
2137 typeArrayHandle _methods;
2138 typeArrayHandle _bcis;
2139 typeArrayHandle _names;
2140
2141 void init(objArrayHandle result, Thread* thread) {
2142 // Get method id, bci, version and mirror from chunk
2143 _result = result;
2144 if (_result.not_null()) {
2145 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2146 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2147 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2148 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2149 _index = 0;
2150 }
2151 }
2152 public:
2153 BacktraceIterator(objArrayHandle result, Thread* thread) {
2154 init(result, thread);
2155 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2156 }
2157
2158 BacktraceElement next(Thread* thread) {
2159 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2160 _methods->ushort_at(_index),
2161 Backtrace::version_at(_bcis->int_at(_index)),
2162 Backtrace::bci_at(_bcis->int_at(_index)),
2163 _names->symbol_at(_index));
2164 _index++;
2165
2166 if (_index >= java_lang_Throwable::trace_chunk_size) {
2167 int next_offset = java_lang_Throwable::trace_next_offset;
2168 // Get next chunk
2169 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2170 init(result, thread);
2171 }
2172 return e;
2173 }
2174
2175 bool repeat() {
2176 return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2177 }
2178 };
2179
2180
2181 // Print stack trace element to resource allocated buffer
2182 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2183 int version, int bci, Symbol* name) {
2184 ResourceMark rm;
2185
2186 // Get strings and string lengths
2187 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2188 const char* klass_name = holder->external_name();
2189 int buf_len = (int)strlen(klass_name);
2190
2191 char* method_name = name->as_C_string();
2192 buf_len += (int)strlen(method_name);
2193
2194 char* source_file_name = NULL;
2195 Symbol* source = Backtrace::get_source_file_name(holder, version);
2196 if (source != NULL) {
2197 source_file_name = source->as_C_string();
2198 buf_len += (int)strlen(source_file_name);
2199 }
2200
2201 char *module_name = NULL, *module_version = NULL;
2202 ModuleEntry* module = holder->module();
2203 if (module->is_named()) {
2204 module_name = module->name()->as_C_string();
2205 buf_len += (int)strlen(module_name);
2206 if (module->version() != NULL) {
2207 module_version = module->version()->as_C_string();
2208 buf_len += (int)strlen(module_version);
2209 }
2210 }
2211
2212 // Allocate temporary buffer with extra space for formatting and line number
2213 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2214
2215 // Print stack trace line in buffer
2216 sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2217
2218 // Print module information
2219 if (module_name != NULL) {
2220 if (module_version != NULL) {
2221 sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2222 } else {
2223 sprintf(buf + (int)strlen(buf), "%s/", module_name);
2224 }
2225 }
2226
2227 // The method can be NULL if the requested class version is gone
2228 Method* method = holder->method_with_orig_idnum(method_id, version);
2229 if (!version_matches(method, version)) {
2230 strcat(buf, "Redefined)");
2231 } else {
2232 int line_number = Backtrace::get_line_number(method, bci);
2233 if (line_number == -2) {
2234 strcat(buf, "Native Method)");
2235 } else {
2236 if (source_file_name != NULL && (line_number != -1)) {
2237 // Sourcename and linenumber
2238 sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2239 } else if (source_file_name != NULL) {
2240 // Just sourcename
2241 sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2242 } else {
2243 // Neither sourcename nor linenumber
2244 sprintf(buf + (int)strlen(buf), "Unknown Source)");
2245 }
2246 CompiledMethod* nm = method->code();
2247 if (WizardMode && nm != NULL) {
2248 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2249 }
2250 }
2251 }
2252
2253 st->print_cr("%s", buf);
2254 }
2255
2256 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
2257 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2258 int method_id = method->orig_method_idnum();
2259 int version = method->constants()->version();
2260 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2261 }
2262
2263 /**
2264 * Print the throwable message and its stack trace plus all causes by walking the
2265 * cause chain. The output looks the same as of Throwable.printStackTrace().
2266 */
2267 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2268 // First, print the message.
2269 print(throwable(), st);
2270 st->cr();
2271
2272 // Now print the stack trace.
2273 Thread* THREAD = Thread::current();
2274 while (throwable.not_null()) {
2275 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2276 if (result.is_null()) {
2277 st->print_raw_cr("\t<<no stack trace available>>");
2278 return;
2279 }
2280 BacktraceIterator iter(result, THREAD);
2281
2282 while (iter.repeat()) {
2283 BacktraceElement bte = iter.next(THREAD);
2284 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2285 }
2286 {
2287 // Call getCause() which doesn't necessarily return the _cause field.
2288 EXCEPTION_MARK;
2289 JavaValue cause(T_OBJECT);
2290 JavaCalls::call_virtual(&cause,
2291 throwable,
2292 throwable->klass(),
2293 vmSymbols::getCause_name(),
2294 vmSymbols::void_throwable_signature(),
2295 THREAD);
2296 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2297 if (HAS_PENDING_EXCEPTION) {
2298 CLEAR_PENDING_EXCEPTION;
2299 throwable = Handle();
2300 } else {
2301 throwable = Handle(THREAD, (oop) cause.get_jobject());
2302 if (throwable.not_null()) {
2303 st->print("Caused by: ");
2304 print(throwable(), st);
2305 st->cr();
2306 }
2307 }
2308 }
2309 }
2310 }
2311
2312 /**
2313 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2314 */
2315 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2316 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2317 JavaValue result(T_VOID);
2318 JavaCalls::call_virtual(&result,
2319 throwable,
2320 SystemDictionary::Throwable_klass(),
2321 vmSymbols::printStackTrace_name(),
2322 vmSymbols::void_method_signature(),
2323 THREAD);
2324 }
2325
2326 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2327 if (!StackTraceInThrowable) return;
2328 ResourceMark rm(THREAD);
2329
2330 // Start out by clearing the backtrace for this object, in case the VM
2331 // runs out of memory while allocating the stack trace
2332 set_backtrace(throwable(), NULL);
2333 // Clear lazily constructed Java level stacktrace if refilling occurs
2334 // This is unnecessary in 1.7+ but harmless
2335 clear_stacktrace(throwable());
2336
2337 int max_depth = MaxJavaStackTraceDepth;
2338 JavaThread* thread = (JavaThread*)THREAD;
2339
2340 BacktraceBuilder bt(CHECK);
2341
2342 // If there is no Java frame just return the method that was being called
2343 // with bci 0
2344 if (!thread->has_last_Java_frame()) {
2345 if (max_depth >= 1 && method() != NULL) {
2346 bt.push(method(), 0, CHECK);
2347 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2348 set_depth(throwable(), 1);
2349 set_backtrace(throwable(), bt.backtrace());
2350 }
2351 return;
2352 }
2353
2354 // Instead of using vframe directly, this version of fill_in_stack_trace
2355 // basically handles everything by hand. This significantly improved the
2356 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2357 // See bug 6333838 for more details.
2358 // The "ASSERT" here is to verify this method generates the exactly same stack
2359 // trace as utilizing vframe.
2360 #ifdef ASSERT
2361 vframeStream st(thread);
2362 methodHandle st_method(THREAD, st.method());
2363 #endif
2364 int total_count = 0;
2365 RegisterMap map(thread, false);
2366 int decode_offset = 0;
2367 CompiledMethod* nm = NULL;
2368 bool skip_fillInStackTrace_check = false;
2369 bool skip_throwableInit_check = false;
2370 bool skip_hidden = !ShowHiddenFrames;
2371
2372 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2373 Method* method = NULL;
2374 int bci = 0;
2375
2376 // Compiled java method case.
2377 if (decode_offset != 0) {
2378 DebugInfoReadStream stream(nm, decode_offset);
2379 decode_offset = stream.read_int();
2380 method = (Method*)nm->metadata_at(stream.read_int());
2381 bci = stream.read_bci();
2382 } else {
2383 if (fr.is_first_frame()) break;
2384 address pc = fr.pc();
2385 if (fr.is_interpreted_frame()) {
2386 address bcp = fr.interpreter_frame_bcp();
2387 method = fr.interpreter_frame_method();
2388 bci = method->bci_from(bcp);
2389 fr = fr.sender(&map);
2390 } else {
2391 CodeBlob* cb = fr.cb();
2392 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2393 // but non nmethod
2394 fr = fr.sender(&map);
2395 if (cb == NULL || !cb->is_compiled()) {
2396 continue;
2397 }
2398 nm = cb->as_compiled_method();
2399 if (nm->method()->is_native()) {
2400 method = nm->method();
2401 bci = 0;
2402 } else {
2403 PcDesc* pd = nm->pc_desc_at(pc);
2404 decode_offset = pd->scope_decode_offset();
2405 // if decode_offset is not equal to 0, it will execute the
2406 // "compiled java method case" at the beginning of the loop.
2407 continue;
2408 }
2409 }
2410 }
2411 #ifdef ASSERT
2412 assert(st_method() == method && st.bci() == bci,
2413 "Wrong stack trace");
2414 st.next();
2415 // vframeStream::method isn't GC-safe so store off a copy
2416 // of the Method* in case we GC.
2417 if (!st.at_end()) {
2418 st_method = st.method();
2419 }
2420 #endif
2421
2422 // the format of the stacktrace will be:
2423 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2424 // - 0 or more <init> methods for the exception class (skipped)
2425 // - rest of the stack
2426
2427 if (!skip_fillInStackTrace_check) {
2428 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2429 throwable->is_a(method->method_holder())) {
2430 continue;
2431 }
2432 else {
2433 skip_fillInStackTrace_check = true; // gone past them all
2434 }
2435 }
2436 if (!skip_throwableInit_check) {
2437 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2438
2439 // skip <init> methods of the exception class and superclasses
2440 // This is simlar to classic VM.
2441 if (method->name() == vmSymbols::object_initializer_name() &&
2442 throwable->is_a(method->method_holder())) {
2443 continue;
2444 } else {
2445 // there are none or we've seen them all - either way stop checking
2446 skip_throwableInit_check = true;
2447 }
2448 }
2449 if (method->is_hidden()) {
2450 if (skip_hidden) {
2451 if (total_count == 0) {
2452 // The top frame will be hidden from the stack trace.
2453 bt.set_has_hidden_top_frame(CHECK);
2454 }
2455 continue;
2456 }
2457 }
2458 bt.push(method, bci, CHECK);
2459 total_count++;
2460 }
2461
2462 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2463
2464 // Put completed stack trace into throwable object
2465 set_backtrace(throwable(), bt.backtrace());
2466 set_depth(throwable(), total_count);
2467 }
2468
2469 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2470 // No-op if stack trace is disabled
2471 if (!StackTraceInThrowable) {
2472 return;
2473 }
2474
2475 // Disable stack traces for some preallocated out of memory errors
2476 if (!Universe::should_fill_in_stack_trace(throwable)) {
2477 return;
2478 }
2479
2480 PRESERVE_EXCEPTION_MARK;
2481
2482 JavaThread* thread = JavaThread::active();
2483 fill_in_stack_trace(throwable, method, thread);
2484 // ignore exceptions thrown during stack trace filling
2485 CLEAR_PENDING_EXCEPTION;
2486 }
2487
2488 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2489 // Allocate stack trace - backtrace is created but not filled in
2490
2491 // No-op if stack trace is disabled
2492 if (!StackTraceInThrowable) return;
2493 BacktraceBuilder bt(CHECK); // creates a backtrace
2494 set_backtrace(throwable(), bt.backtrace());
2495 }
2496
2497
2498 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2499 // Fill in stack trace into preallocated backtrace (no GC)
2500
2501 // No-op if stack trace is disabled
2502 if (!StackTraceInThrowable) return;
2503
2504 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2505
2506 JavaThread* THREAD = JavaThread::current();
2507
2508 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2509 assert(backtrace.not_null(), "backtrace should have been preallocated");
2510
2511 ResourceMark rm(THREAD);
2512 vframeStream st(THREAD);
2513
2514 BacktraceBuilder bt(THREAD, backtrace);
2515
2516 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2517 // methods as preallocated errors aren't created by "java" code.
2518
2519 // fill in as much stack trace as possible
2520 int chunk_count = 0;
2521 for (;!st.at_end(); st.next()) {
2522 bt.push(st.method(), st.bci(), CHECK);
2523 chunk_count++;
2524
2525 // Bail-out for deep stacks
2526 if (chunk_count >= trace_chunk_size) break;
2527 }
2528 set_depth(throwable(), chunk_count);
2529 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2530
2531 // We support the Throwable immutability protocol defined for Java 7.
2532 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2533 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2534 }
2535
2536 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2537 objArrayHandle stack_trace_array_h, TRAPS) {
2538
2539 if (throwable.is_null() || stack_trace_array_h.is_null()) {
2540 THROW(vmSymbols::java_lang_NullPointerException());
2541 }
2542
2543 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2544
2545 if (stack_trace_array_h->length() != depth(throwable())) {
2546 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2547 }
2548
2549 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2550 BacktraceIterator iter(result, THREAD);
2551
2552 int index = 0;
2553 while (iter.repeat()) {
2554 BacktraceElement bte = iter.next(THREAD);
2555
2556 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2557
2558 if (stack_trace_element.is_null()) {
2559 THROW(vmSymbols::java_lang_NullPointerException());
2560 }
2561
2562 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2563 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2564
2565 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2566 method,
2567 bte._version,
2568 bte._bci,
2569 bte._name, CHECK);
2570 }
2571 }
2572
2573 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2574 Thread* THREAD = Thread::current();
2575 objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
2576 BacktraceIterator iter(result, THREAD);
2577 // No backtrace available.
2578 if (!iter.repeat()) return false;
2579
2580 // If the exception happened in a frame that has been hidden, i.e.,
2581 // omitted from the back trace, we can not compute the message.
2582 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2583 if (hidden != NULL) {
2584 return false;
2585 }
2586
2587 // Get first backtrace element.
2588 BacktraceElement bte = iter.next(THREAD);
2589
2590 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2591 assert(holder != NULL, "first element should be non-null");
2592 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2593
2594 // Original version is no longer available.
2595 if (m == NULL || !version_matches(m, bte._version)) {
2596 return false;
2597 }
2598
2599 *method = m;
2600 *bci = bte._bci;
2601 return true;
2602 }
2603
2604 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2605 // Allocate java.lang.StackTraceElement instance
2606 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2607 assert(k != NULL, "must be loaded in 1.4+");
2608 if (k->should_be_initialized()) {
2609 k->initialize(CHECK_0);
2610 }
2611
2612 Handle element = k->allocate_instance_handle(CHECK_0);
2613
2614 int version = method->constants()->version();
2615 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
2616 return element();
2617 }
2618
2619 void java_lang_StackTraceElement::fill_in(Handle element,
2620 InstanceKlass* holder, const methodHandle& method,
2621 int version, int bci, Symbol* name, TRAPS) {
2622 assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2623
2624 ResourceMark rm(THREAD);
2625 HandleMark hm(THREAD);
2626
2627 // Fill in class name
2628 Handle java_class(THREAD, holder->java_mirror());
2629 oop classname = java_lang_Class::name(java_class, CHECK);
2630 java_lang_StackTraceElement::set_declaringClass(element(), classname);
2631 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2632
2633 oop loader = holder->class_loader();
2634 if (loader != NULL) {
2635 oop loader_name = java_lang_ClassLoader::name(loader);
2636 if (loader_name != NULL)
2637 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2638 }
2639
2640 // Fill in method name
2641 oop methodname = StringTable::intern(name, CHECK);
2642 java_lang_StackTraceElement::set_methodName(element(), methodname);
2643
2644 // Fill in module name and version
2645 ModuleEntry* module = holder->module();
2646 if (module->is_named()) {
2647 oop module_name = StringTable::intern(module->name(), CHECK);
2648 java_lang_StackTraceElement::set_moduleName(element(), module_name);
2649 oop module_version;
2650 if (module->version() != NULL) {
2651 module_version = StringTable::intern(module->version(), CHECK);
2652 } else {
2653 module_version = NULL;
2654 }
2655 java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2656 }
2657
2658 if (method() == NULL || !version_matches(method(), version)) {
2659 // The method was redefined, accurate line number information isn't available
2660 java_lang_StackTraceElement::set_fileName(element(), NULL);
2661 java_lang_StackTraceElement::set_lineNumber(element(), -1);
2662 } else {
2663 // Fill in source file name and line number.
2664 Symbol* source = Backtrace::get_source_file_name(holder, version);
2665 oop source_file = java_lang_Class::source_file(java_class());
2666 if (source != NULL) {
2667 // Class was not redefined. We can trust its cache if set,
2668 // else we have to initialize it.
2669 if (source_file == NULL) {
2670 source_file = StringTable::intern(source, CHECK);
2671 java_lang_Class::set_source_file(java_class(), source_file);
2672 }
2673 } else {
2674 // Class was redefined. Dump the cache if it was set.
2675 if (source_file != NULL) {
2676 source_file = NULL;
2677 java_lang_Class::set_source_file(java_class(), source_file);
2678 }
2679 }
2680 java_lang_StackTraceElement::set_fileName(element(), source_file);
2681
2682 int line_number = Backtrace::get_line_number(method, bci);
2683 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2684 }
2685 }
2686
2687 #if INCLUDE_JVMCI
2688 void java_lang_StackTraceElement::decode(Handle mirror, methodHandle method, int bci, Symbol*& methodname, Symbol*& filename, int& line_number) {
2689 int method_id = method->orig_method_idnum();
2690 int cpref = method->name_index();
2691 decode(mirror, method_id, method->constants()->version(), bci, cpref, methodname, filename, line_number);
2692 }
2693
2694 void java_lang_StackTraceElement::decode(Handle mirror, int method_id, int version, int bci, int cpref, Symbol*& methodname, Symbol*& filename, int& line_number) {
2695 // Fill in class name
2696 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2697 Method* method = holder->method_with_orig_idnum(method_id, version);
2698
2699 // The method can be NULL if the requested class version is gone
2700 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
2701
2702 // Fill in method name
2703 methodname = sym;
2704
2705 if (!version_matches(method, version)) {
2706 // If the method was redefined, accurate line number information isn't available
2707 filename = NULL;
2708 line_number = -1;
2709 } else {
2710 // Fill in source file name and line number.
2711 // Use a specific ik version as a holder since the mirror might
2712 // refer to a version that is now obsolete and no longer accessible
2713 // via the previous versions list.
2714 holder = holder->get_klass_version(version);
2715 assert(holder != NULL, "sanity check");
2716 filename = holder->source_file_name();
2717 line_number = Backtrace::get_line_number(method, bci);
2718 }
2719 }
2720 #endif // INCLUDE_JVMCI
2721
2722 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2723 HandleMark hm(THREAD);
2724 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2725 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2726 // we should expand MemberName::name when Throwable uses StackTrace
2727 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2728 return method;
2729 }
2730
2731 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2732 // set Method* or mid/cpref
2733 HandleMark hm(THREAD);
2734 Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2735 InstanceKlass* ik = method->method_holder();
2736 CallInfo info(method(), ik, CHECK);
2737 MethodHandles::init_method_MemberName(mname, info);
2738 // set bci
2739 java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2740 // method may be redefined; store the version
2741 int version = method->constants()->version();
2742 assert((jushort)version == version, "version should be short");
2743 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2744 }
2745
2746 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2747 ResourceMark rm(THREAD);
2748 HandleMark hm(THREAD);
2749 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2750 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2751 InstanceKlass* holder = InstanceKlass::cast(clazz);
2752 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2753
2754 short version = stackFrame->short_field(_version_offset);
2755 int bci = stackFrame->int_field(_bci_offset);
2756 Symbol* name = method->name();
2757 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, name, CHECK);
2758 }
2759
2760 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2761 macro(_memberName_offset, k, "memberName", object_signature, false); \
2762 macro(_bci_offset, k, "bci", int_signature, false)
2763
2764 void java_lang_StackFrameInfo::compute_offsets() {
2765 InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2766 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2767 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2768 }
2769
2770 #if INCLUDE_CDS
2771 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2772 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2773 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2774 }
2775 #endif
2776
2777 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2778 macro(_monitors_offset, k, "monitors", object_array_signature, false); \
2779 macro(_locals_offset, k, "locals", object_array_signature, false); \
2780 macro(_operands_offset, k, "operands", object_array_signature, false); \
2781 macro(_mode_offset, k, "mode", int_signature, false)
2782
2783 void java_lang_LiveStackFrameInfo::compute_offsets() {
2784 InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2785 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2786 }
2787
2788 #if INCLUDE_CDS
2789 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2790 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2791 }
2792 #endif
2793
2794 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2795 macro(override_offset, k, "override", bool_signature, false)
2796
2797 void java_lang_reflect_AccessibleObject::compute_offsets() {
2798 InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2799 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2800 }
2801
2802 #if INCLUDE_CDS
2803 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2804 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2805 }
2806 #endif
2807
2808 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2809 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2810 return (jboolean) reflect->bool_field(override_offset);
2811 }
2812
2813 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2814 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2815 reflect->bool_field_put(override_offset, (int) value);
2816 }
2817
2818 #define METHOD_FIELDS_DO(macro) \
2819 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2820 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
2821 macro(returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \
2822 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2823 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2824 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2825 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2826 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2827 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2828 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2829 macro(annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false);
2830
2831 void java_lang_reflect_Method::compute_offsets() {
2832 InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2833 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2834 }
2835
2836 #if INCLUDE_CDS
2837 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2838 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2839 }
2840 #endif
2841
2842 Handle java_lang_reflect_Method::create(TRAPS) {
2843 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2844 Klass* klass = SystemDictionary::reflect_Method_klass();
2845 // This class is eagerly initialized during VM initialization, since we keep a refence
2846 // to one of the methods
2847 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2848 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2849 }
2850
2851 oop java_lang_reflect_Method::clazz(oop reflect) {
2852 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2853 return reflect->obj_field(clazz_offset);
2854 }
2855
2856 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2857 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2858 reflect->obj_field_put(clazz_offset, value);
2859 }
2860
2861 int java_lang_reflect_Method::slot(oop reflect) {
2862 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2863 return reflect->int_field(slot_offset);
2864 }
2865
2866 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2867 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2868 reflect->int_field_put(slot_offset, value);
2869 }
2870
2871 void java_lang_reflect_Method::set_name(oop method, oop value) {
2872 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2873 method->obj_field_put(name_offset, value);
2874 }
2875
2876 oop java_lang_reflect_Method::return_type(oop method) {
2877 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2878 return method->obj_field(returnType_offset);
2879 }
2880
2881 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2882 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2883 method->obj_field_put(returnType_offset, value);
2884 }
2885
2886 oop java_lang_reflect_Method::parameter_types(oop method) {
2887 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2888 return method->obj_field(parameterTypes_offset);
2889 }
2890
2891 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2892 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2893 method->obj_field_put(parameterTypes_offset, value);
2894 }
2895
2896 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2897 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2898 method->obj_field_put(exceptionTypes_offset, value);
2899 }
2900
2901 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2902 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2903 method->int_field_put(modifiers_offset, value);
2904 }
2905
2906 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2907 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2908 method->obj_field_put(signature_offset, value);
2909 }
2910
2911 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2912 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2913 method->obj_field_put(annotations_offset, value);
2914 }
2915
2916 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2917 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2918 method->obj_field_put(parameter_annotations_offset, value);
2919 }
2920
2921 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2922 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2923 method->obj_field_put(annotation_default_offset, value);
2924 }
2925
2926 #define CONSTRUCTOR_FIELDS_DO(macro) \
2927 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
2928 macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2929 macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2930 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
2931 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
2932 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
2933 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \
2934 macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
2935
2936 void java_lang_reflect_Constructor::compute_offsets() {
2937 InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2938 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2939 }
2940
2941 #if INCLUDE_CDS
2942 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
2943 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2944 }
2945 #endif
2946
2947 Handle java_lang_reflect_Constructor::create(TRAPS) {
2948 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2949 Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2950 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2951 InstanceKlass* ik = InstanceKlass::cast(k);
2952 // Ensure it is initialized
2953 ik->initialize(CHECK_NH);
2954 return ik->allocate_instance_handle(THREAD);
2955 }
2956
2957 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2958 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2959 return reflect->obj_field(clazz_offset);
2960 }
2961
2962 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2963 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2964 reflect->obj_field_put(clazz_offset, value);
2965 }
2966
2967 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2968 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2969 return constructor->obj_field(parameterTypes_offset);
2970 }
2971
2972 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2973 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2974 constructor->obj_field_put(parameterTypes_offset, value);
2975 }
2976
2977 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2978 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2979 constructor->obj_field_put(exceptionTypes_offset, value);
2980 }
2981
2982 int java_lang_reflect_Constructor::slot(oop reflect) {
2983 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2984 return reflect->int_field(slot_offset);
2985 }
2986
2987 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2988 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2989 reflect->int_field_put(slot_offset, value);
2990 }
2991
2992 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2993 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2994 constructor->int_field_put(modifiers_offset, value);
2995 }
2996
2997 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2998 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2999 constructor->obj_field_put(signature_offset, value);
3000 }
3001
3002 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3003 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3004 constructor->obj_field_put(annotations_offset, value);
3005 }
3006
3007 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3008 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3009 method->obj_field_put(parameter_annotations_offset, value);
3010 }
3011
3012 #define FIELD_FIELDS_DO(macro) \
3013 macro(clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3014 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3015 macro(type_offset, k, vmSymbols::type_name(), class_signature, false); \
3016 macro(slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3017 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3018 macro(signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3019 macro(annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3020
3021 void java_lang_reflect_Field::compute_offsets() {
3022 InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3023 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3024 }
3025
3026 #if INCLUDE_CDS
3027 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3028 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3029 }
3030 #endif
3031
3032 Handle java_lang_reflect_Field::create(TRAPS) {
3033 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3034 Symbol* name = vmSymbols::java_lang_reflect_Field();
3035 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3036 InstanceKlass* ik = InstanceKlass::cast(k);
3037 // Ensure it is initialized
3038 ik->initialize(CHECK_NH);
3039 return ik->allocate_instance_handle(THREAD);
3040 }
3041
3042 oop java_lang_reflect_Field::clazz(oop reflect) {
3043 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3044 return reflect->obj_field(clazz_offset);
3045 }
3046
3047 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3048 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3049 reflect->obj_field_put(clazz_offset, value);
3050 }
3051
3052 oop java_lang_reflect_Field::name(oop field) {
3053 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3054 return field->obj_field(name_offset);
3055 }
3056
3057 void java_lang_reflect_Field::set_name(oop field, oop value) {
3058 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3059 field->obj_field_put(name_offset, value);
3060 }
3061
3062 oop java_lang_reflect_Field::type(oop field) {
3063 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3064 return field->obj_field(type_offset);
3065 }
3066
3067 void java_lang_reflect_Field::set_type(oop field, oop value) {
3068 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3069 field->obj_field_put(type_offset, value);
3070 }
3071
3072 int java_lang_reflect_Field::slot(oop reflect) {
3073 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3074 return reflect->int_field(slot_offset);
3075 }
3076
3077 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3078 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3079 reflect->int_field_put(slot_offset, value);
3080 }
3081
3082 int java_lang_reflect_Field::modifiers(oop field) {
3083 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3084 return field->int_field(modifiers_offset);
3085 }
3086
3087 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3088 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3089 field->int_field_put(modifiers_offset, value);
3090 }
3091
3092 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3093 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3094 field->obj_field_put(signature_offset, value);
3095 }
3096
3097 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3098 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3099 field->obj_field_put(annotations_offset, value);
3100 }
3101
3102 #define CONSTANTPOOL_FIELDS_DO(macro) \
3103 macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3104
3105 void reflect_ConstantPool::compute_offsets() {
3106 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3107 // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3108 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3109 }
3110
3111 #if INCLUDE_CDS
3112 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3113 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3114 }
3115 #endif
3116
3117 #define PARAMETER_FIELDS_DO(macro) \
3118 macro(name_offset, k, vmSymbols::name_name(), string_signature, false); \
3119 macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3120 macro(index_offset, k, vmSymbols::index_name(), int_signature, false); \
3121 macro(executable_offset, k, vmSymbols::executable_name(), executable_signature, false)
3122
3123 void java_lang_reflect_Parameter::compute_offsets() {
3124 InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3125 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3126 }
3127
3128 #if INCLUDE_CDS
3129 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3130 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3131 }
3132 #endif
3133
3134 Handle java_lang_reflect_Parameter::create(TRAPS) {
3135 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3136 Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3137 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3138 InstanceKlass* ik = InstanceKlass::cast(k);
3139 // Ensure it is initialized
3140 ik->initialize(CHECK_NH);
3141 return ik->allocate_instance_handle(THREAD);
3142 }
3143
3144 oop java_lang_reflect_Parameter::name(oop param) {
3145 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3146 return param->obj_field(name_offset);
3147 }
3148
3149 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3150 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3151 param->obj_field_put(name_offset, value);
3152 }
3153
3154 int java_lang_reflect_Parameter::modifiers(oop param) {
3155 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3156 return param->int_field(modifiers_offset);
3157 }
3158
3159 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3160 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3161 param->int_field_put(modifiers_offset, value);
3162 }
3163
3164 int java_lang_reflect_Parameter::index(oop param) {
3165 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3166 return param->int_field(index_offset);
3167 }
3168
3169 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3170 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3171 param->int_field_put(index_offset, value);
3172 }
3173
3174 oop java_lang_reflect_Parameter::executable(oop param) {
3175 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3176 return param->obj_field(executable_offset);
3177 }
3178
3179 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3180 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3181 param->obj_field_put(executable_offset, value);
3182 }
3183
3184
3185 int java_lang_Module::loader_offset;
3186 int java_lang_Module::name_offset;
3187 int java_lang_Module::_module_entry_offset = -1;
3188
3189 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3190 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3191 return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3192 vmSymbols::java_lang_module_init_signature(),
3193 loader, module_name, CHECK_NH);
3194 }
3195
3196 #define MODULE_FIELDS_DO(macro) \
3197 macro(loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \
3198 macro(name_offset, k, vmSymbols::name_name(), string_signature, false)
3199
3200 void java_lang_Module::compute_offsets() {
3201 InstanceKlass* k = SystemDictionary::Module_klass();
3202 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3203 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3204 }
3205
3206 #if INCLUDE_CDS
3207 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3208 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3209 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3210 }
3211 #endif
3212
3213 oop java_lang_Module::loader(oop module) {
3214 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3215 return module->obj_field(loader_offset);
3216 }
3217
3218 void java_lang_Module::set_loader(oop module, oop value) {
3219 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3220 module->obj_field_put(loader_offset, value);
3221 }
3222
3223 oop java_lang_Module::name(oop module) {
3224 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3225 return module->obj_field(name_offset);
3226 }
3227
3228 void java_lang_Module::set_name(oop module, oop value) {
3229 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3230 module->obj_field_put(name_offset, value);
3231 }
3232
3233 ModuleEntry* java_lang_Module::module_entry(oop module) {
3234 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3235 assert(module != NULL, "module can't be null");
3236 assert(oopDesc::is_oop(module), "module must be oop");
3237
3238 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3239 if (module_entry == NULL) {
3240 // If the inject field containing the ModuleEntry* is null then return the
3241 // class loader's unnamed module.
3242 oop loader = java_lang_Module::loader(module);
3243 Handle h_loader = Handle(Thread::current(), loader);
3244 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3245 return loader_cld->unnamed_module();
3246 }
3247 return module_entry;
3248 }
3249
3250 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3251 assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3252 assert(module != NULL, "module can't be null");
3253 assert(oopDesc::is_oop(module), "module must be oop");
3254 module->address_field_put(_module_entry_offset, (address)module_entry);
3255 }
3256
3257 Handle reflect_ConstantPool::create(TRAPS) {
3258 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3259 InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3260 // Ensure it is initialized
3261 k->initialize(CHECK_NH);
3262 return k->allocate_instance_handle(THREAD);
3263 }
3264
3265
3266 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3267 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3268 oop mirror = value->pool_holder()->java_mirror();
3269 // Save the mirror to get back the constant pool.
3270 reflect->obj_field_put(_oop_offset, mirror);
3271 }
3272
3273 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3274 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3275
3276 oop mirror = reflect->obj_field(_oop_offset);
3277 Klass* k = java_lang_Class::as_Klass(mirror);
3278 assert(k->is_instance_klass(), "Must be");
3279
3280 // Get the constant pool back from the klass. Since class redefinition
3281 // merges the new constant pool into the old, this is essentially the
3282 // same constant pool as the original. If constant pool merging is
3283 // no longer done in the future, this will have to change to save
3284 // the original.
3285 return InstanceKlass::cast(k)->constants();
3286 }
3287
3288 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3289 macro(_base_offset, k, "base", object_signature, false)
3290
3291 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3292 InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3293 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3294 }
3295
3296 #if INCLUDE_CDS
3297 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3298 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3299 }
3300 #endif
3301
3302 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3303 Klass* k = SystemDictionary::box_klass(type);
3304 if (k == NULL) return NULL;
3305 InstanceKlass* ik = InstanceKlass::cast(k);
3306 if (!ik->is_initialized()) ik->initialize(CHECK_0);
3307 return ik->allocate_instance(THREAD);
3308 }
3309
3310
3311 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3312 oop box = initialize_and_allocate(type, CHECK_0);
3313 if (box == NULL) return NULL;
3314 switch (type) {
3315 case T_BOOLEAN:
3316 box->bool_field_put(value_offset, value->z);
3317 break;
3318 case T_CHAR:
3319 box->char_field_put(value_offset, value->c);
3320 break;
3321 case T_FLOAT:
3322 box->float_field_put(value_offset, value->f);
3323 break;
3324 case T_DOUBLE:
3325 box->double_field_put(long_value_offset, value->d);
3326 break;
3327 case T_BYTE:
3328 box->byte_field_put(value_offset, value->b);
3329 break;
3330 case T_SHORT:
3331 box->short_field_put(value_offset, value->s);
3332 break;
3333 case T_INT:
3334 box->int_field_put(value_offset, value->i);
3335 break;
3336 case T_LONG:
3337 box->long_field_put(long_value_offset, value->j);
3338 break;
3339 default:
3340 return NULL;
3341 }
3342 return box;
3343 }
3344
3345
3346 BasicType java_lang_boxing_object::basic_type(oop box) {
3347 if (box == NULL) return T_ILLEGAL;
3348 BasicType type = SystemDictionary::box_klass_type(box->klass());
3349 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
3350 return T_ILLEGAL;
3351 return type;
3352 }
3353
3354
3355 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3356 BasicType type = SystemDictionary::box_klass_type(box->klass());
3357 switch (type) {
3358 case T_BOOLEAN:
3359 value->z = box->bool_field(value_offset);
3360 break;
3361 case T_CHAR:
3362 value->c = box->char_field(value_offset);
3363 break;
3364 case T_FLOAT:
3365 value->f = box->float_field(value_offset);
3366 break;
3367 case T_DOUBLE:
3368 value->d = box->double_field(long_value_offset);
3369 break;
3370 case T_BYTE:
3371 value->b = box->byte_field(value_offset);
3372 break;
3373 case T_SHORT:
3374 value->s = box->short_field(value_offset);
3375 break;
3376 case T_INT:
3377 value->i = box->int_field(value_offset);
3378 break;
3379 case T_LONG:
3380 value->j = box->long_field(long_value_offset);
3381 break;
3382 default:
3383 return T_ILLEGAL;
3384 } // end switch
3385 return type;
3386 }
3387
3388
3389 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3390 BasicType type = SystemDictionary::box_klass_type(box->klass());
3391 switch (type) {
3392 case T_BOOLEAN:
3393 box->bool_field_put(value_offset, value->z);
3394 break;
3395 case T_CHAR:
3396 box->char_field_put(value_offset, value->c);
3397 break;
3398 case T_FLOAT:
3399 box->float_field_put(value_offset, value->f);
3400 break;
3401 case T_DOUBLE:
3402 box->double_field_put(long_value_offset, value->d);
3403 break;
3404 case T_BYTE:
3405 box->byte_field_put(value_offset, value->b);
3406 break;
3407 case T_SHORT:
3408 box->short_field_put(value_offset, value->s);
3409 break;
3410 case T_INT:
3411 box->int_field_put(value_offset, value->i);
3412 break;
3413 case T_LONG:
3414 box->long_field_put(long_value_offset, value->j);
3415 break;
3416 default:
3417 return T_ILLEGAL;
3418 } // end switch
3419 return type;
3420 }
3421
3422
3423 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3424 switch (type) {
3425 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
3426 case T_CHAR: st->print("%d", value->c); break;
3427 case T_BYTE: st->print("%d", value->b); break;
3428 case T_SHORT: st->print("%d", value->s); break;
3429 case T_INT: st->print("%d", value->i); break;
3430 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
3431 case T_FLOAT: st->print("%f", value->f); break;
3432 case T_DOUBLE: st->print("%lf", value->d); break;
3433 default: st->print("type %d?", type); break;
3434 }
3435 }
3436
3437 // Support for java_lang_ref_Reference
3438
3439 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3440 assert(obj != NULL, "sanity");
3441 if (offset != java_lang_ref_Reference::referent_offset) {
3442 return false;
3443 }
3444
3445 Klass* k = obj->klass();
3446 if (!k->is_instance_klass()) {
3447 return false;
3448 }
3449
3450 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3451 bool is_reference = ik->reference_type() != REF_NONE;
3452 assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3453 return is_reference;
3454 }
3455
3456 // Support for java_lang_ref_SoftReference
3457 //
3458
3459 #define SOFTREFERENCE_FIELDS_DO(macro) \
3460 macro(timestamp_offset, k, "timestamp", long_signature, false); \
3461 macro(static_clock_offset, k, "clock", long_signature, true)
3462
3463 void java_lang_ref_SoftReference::compute_offsets() {
3464 InstanceKlass* k = SystemDictionary::SoftReference_klass();
3465 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3466 }
3467
3468 #if INCLUDE_CDS
3469 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3470 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3471 }
3472 #endif
3473
3474 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3475 return ref->long_field(timestamp_offset);
3476 }
3477
3478 jlong java_lang_ref_SoftReference::clock() {
3479 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3480 oop base = ik->static_field_base_raw();
3481 return base->long_field(static_clock_offset);
3482 }
3483
3484 void java_lang_ref_SoftReference::set_clock(jlong value) {
3485 InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3486 oop base = ik->static_field_base_raw();
3487 base->long_field_put(static_clock_offset, value);
3488 }
3489
3490 // Support for java_lang_invoke_DirectMethodHandle
3491
3492 int java_lang_invoke_DirectMethodHandle::_member_offset;
3493
3494 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3495 oop member_name = NULL;
3496 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3497 "a DirectMethodHandle oop is expected");
3498 return dmh->obj_field(member_offset_in_bytes());
3499 }
3500
3501 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3502 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3503
3504 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3505 InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3506 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3507 }
3508
3509 #if INCLUDE_CDS
3510 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3511 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3512 }
3513 #endif
3514
3515 // Support for java_lang_invoke_MethodHandle
3516
3517 int java_lang_invoke_MethodHandle::_type_offset;
3518 int java_lang_invoke_MethodHandle::_form_offset;
3519
3520 int java_lang_invoke_MemberName::_clazz_offset;
3521 int java_lang_invoke_MemberName::_name_offset;
3522 int java_lang_invoke_MemberName::_type_offset;
3523 int java_lang_invoke_MemberName::_flags_offset;
3524 int java_lang_invoke_MemberName::_method_offset;
3525 int java_lang_invoke_MemberName::_vmindex_offset;
3526
3527 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3528 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3529
3530 int java_lang_invoke_LambdaForm::_vmentry_offset;
3531
3532 #define METHODHANDLE_FIELDS_DO(macro) \
3533 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3534 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false)
3535
3536 void java_lang_invoke_MethodHandle::compute_offsets() {
3537 InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3538 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3539 }
3540
3541 #if INCLUDE_CDS
3542 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3543 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3544 }
3545 #endif
3546
3547 #define MEMBERNAME_FIELDS_DO(macro) \
3548 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3549 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3550 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \
3551 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3552 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false)
3553
3554 void java_lang_invoke_MemberName::compute_offsets() {
3555 InstanceKlass* k = SystemDictionary::MemberName_klass();
3556 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3557 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3558 }
3559
3560 #if INCLUDE_CDS
3561 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3562 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3563 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3564 }
3565 #endif
3566
3567 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3568 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3569 assert(k != NULL, "jdk mismatch");
3570 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3571 }
3572
3573 #if INCLUDE_CDS
3574 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3575 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3576 }
3577 #endif
3578
3579 #define LAMBDAFORM_FIELDS_DO(macro) \
3580 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3581
3582 void java_lang_invoke_LambdaForm::compute_offsets() {
3583 InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3584 assert (k != NULL, "jdk mismatch");
3585 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3586 }
3587
3588 #if INCLUDE_CDS
3589 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3590 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3591 }
3592 #endif
3593
3594 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3595 return obj != NULL && is_subclass(obj->klass());
3596 }
3597
3598
3599 oop java_lang_invoke_MethodHandle::type(oop mh) {
3600 return mh->obj_field(_type_offset);
3601 }
3602
3603 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3604 mh->obj_field_put(_type_offset, mtype);
3605 }
3606
3607 oop java_lang_invoke_MethodHandle::form(oop mh) {
3608 assert(_form_offset != 0, "");
3609 return mh->obj_field(_form_offset);
3610 }
3611
3612 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3613 assert(_form_offset != 0, "");
3614 mh->obj_field_put(_form_offset, lform);
3615 }
3616
3617 /// MemberName accessors
3618
3619 oop java_lang_invoke_MemberName::clazz(oop mname) {
3620 assert(is_instance(mname), "wrong type");
3621 return mname->obj_field(_clazz_offset);
3622 }
3623
3624 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3625 assert(is_instance(mname), "wrong type");
3626 mname->obj_field_put(_clazz_offset, clazz);
3627 }
3628
3629 oop java_lang_invoke_MemberName::name(oop mname) {
3630 assert(is_instance(mname), "wrong type");
3631 return mname->obj_field(_name_offset);
3632 }
3633
3634 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3635 assert(is_instance(mname), "wrong type");
3636 mname->obj_field_put(_name_offset, name);
3637 }
3638
3639 oop java_lang_invoke_MemberName::type(oop mname) {
3640 assert(is_instance(mname), "wrong type");
3641 return mname->obj_field(_type_offset);
3642 }
3643
3644 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3645 assert(is_instance(mname), "wrong type");
3646 mname->obj_field_put(_type_offset, type);
3647 }
3648
3649 int java_lang_invoke_MemberName::flags(oop mname) {
3650 assert(is_instance(mname), "wrong type");
3651 return mname->int_field(_flags_offset);
3652 }
3653
3654 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3655 assert(is_instance(mname), "wrong type");
3656 mname->int_field_put(_flags_offset, flags);
3657 }
3658
3659
3660 // Return vmtarget from ResolvedMethodName method field through indirection
3661 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3662 assert(is_instance(mname), "wrong type");
3663 oop method = mname->obj_field(_method_offset);
3664 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3665 }
3666
3667 bool java_lang_invoke_MemberName::is_method(oop mname) {
3668 assert(is_instance(mname), "must be MemberName");
3669 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3670 }
3671
3672 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3673 assert(is_instance(mname), "wrong type");
3674 mname->obj_field_put(_method_offset, resolved_method);
3675 }
3676
3677 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3678 assert(is_instance(mname), "wrong type");
3679 return (intptr_t) mname->address_field(_vmindex_offset);
3680 }
3681
3682 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3683 assert(is_instance(mname), "wrong type");
3684 mname->address_field_put(_vmindex_offset, (address) index);
3685 }
3686
3687
3688 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3689 assert(is_instance(resolved_method), "wrong type");
3690 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3691 assert(m->is_method(), "must be");
3692 return m;
3693 }
3694
3695 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3696 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3697 assert(is_instance(resolved_method), "wrong type");
3698 resolved_method->address_field_put(_vmtarget_offset, (address)m);
3699 }
3700
3701 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3702 assert(is_instance(resolved_method), "wrong type");
3703 resolved_method->obj_field_put(_vmholder_offset, holder);
3704 }
3705
3706 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3707 const Method* method = m();
3708
3709 // lookup ResolvedMethod oop in the table, or create a new one and intern it
3710 oop resolved_method = ResolvedMethodTable::find_method(method);
3711 if (resolved_method != NULL) {
3712 return resolved_method;
3713 }
3714
3715 InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3716 if (!k->is_initialized()) {
3717 k->initialize(CHECK_NULL);
3718 }
3719
3720 oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3721
3722 NoSafepointVerifier nsv;
3723
3724 if (method->is_old()) {
3725 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3726 method->get_new_method();
3727 }
3728
3729 InstanceKlass* holder = method->method_holder();
3730
3731 set_vmtarget(new_resolved_method, const_cast<Method*>(method));
3732 // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3733 // distinct loaders) to ensure the metadata is kept alive.
3734 // This mirror may be different than the one in clazz field.
3735 set_vmholder(new_resolved_method, holder->java_mirror());
3736
3737 // Set flag in class to indicate this InstanceKlass has entries in the table
3738 // to avoid walking table during redefinition if none of the redefined classes
3739 // have any membernames in the table.
3740 holder->set_has_resolved_methods();
3741
3742 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3743 }
3744
3745 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3746 assert(is_instance(lform), "wrong type");
3747 return lform->obj_field(_vmentry_offset);
3748 }
3749
3750
3751 // Support for java_lang_invoke_MethodType
3752
3753 int java_lang_invoke_MethodType::_rtype_offset;
3754 int java_lang_invoke_MethodType::_ptypes_offset;
3755
3756 #define METHODTYPE_FIELDS_DO(macro) \
3757 macro(_rtype_offset, k, "rtype", class_signature, false); \
3758 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3759
3760 void java_lang_invoke_MethodType::compute_offsets() {
3761 InstanceKlass* k = SystemDictionary::MethodType_klass();
3762 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3763 }
3764
3765 #if INCLUDE_CDS
3766 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3767 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3768 }
3769 #endif
3770
3771 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3772 st->print("(");
3773 objArrayOop pts = ptypes(mt);
3774 for (int i = 0, limit = pts->length(); i < limit; i++) {
3775 java_lang_Class::print_signature(pts->obj_at(i), st);
3776 }
3777 st->print(")");
3778 java_lang_Class::print_signature(rtype(mt), st);
3779 }
3780
3781 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
3782 ResourceMark rm;
3783 stringStream buffer(128);
3784 print_signature(mt, &buffer);
3785 const char* sigstr = buffer.base();
3786 int siglen = (int) buffer.size();
3787 Symbol *name;
3788 if (!intern_if_not_found) {
3789 name = SymbolTable::probe(sigstr, siglen);
3790 } else {
3791 name = SymbolTable::new_symbol(sigstr, siglen);
3792 }
3793 return name;
3794 }
3795
3796 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3797 if (mt1 == mt2)
3798 return true;
3799 if (rtype(mt1) != rtype(mt2))
3800 return false;
3801 if (ptype_count(mt1) != ptype_count(mt2))
3802 return false;
3803 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3804 if (ptype(mt1, i) != ptype(mt2, i))
3805 return false;
3806 }
3807 return true;
3808 }
3809
3810 oop java_lang_invoke_MethodType::rtype(oop mt) {
3811 assert(is_instance(mt), "must be a MethodType");
3812 return mt->obj_field(_rtype_offset);
3813 }
3814
3815 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3816 assert(is_instance(mt), "must be a MethodType");
3817 return (objArrayOop) mt->obj_field(_ptypes_offset);
3818 }
3819
3820 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3821 return ptypes(mt)->obj_at(idx);
3822 }
3823
3824 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3825 return ptypes(mt)->length();
3826 }
3827
3828 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3829 objArrayOop pts = ptypes(mt);
3830 int count = pts->length();
3831 int slots = 0;
3832 for (int i = 0; i < count; i++) {
3833 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3834 slots += type2size[bt];
3835 }
3836 return slots;
3837 }
3838
3839 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3840 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3841 return type2size[bt];
3842 }
3843
3844
3845 // Support for java_lang_invoke_CallSite
3846
3847 int java_lang_invoke_CallSite::_target_offset;
3848 int java_lang_invoke_CallSite::_context_offset;
3849
3850 #define CALLSITE_FIELDS_DO(macro) \
3851 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \
3852 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3853
3854 void java_lang_invoke_CallSite::compute_offsets() {
3855 InstanceKlass* k = SystemDictionary::CallSite_klass();
3856 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3857 }
3858
3859 #if INCLUDE_CDS
3860 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
3861 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3862 }
3863 #endif
3864
3865 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
3866 assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3867
3868 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
3869 return dep_oop;
3870 }
3871
3872 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3873
3874 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3875 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
3876
3877 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3878 InstanceKlass* k = SystemDictionary::Context_klass();
3879 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3880 }
3881
3882 #if INCLUDE_CDS
3883 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
3884 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3885 }
3886 #endif
3887
3888 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3889 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3890 nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
3891 volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
3892 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
3893 return dep_ctx;
3894 }
3895
3896 // Support for java_security_AccessControlContext
3897
3898 int java_security_AccessControlContext::_context_offset = 0;
3899 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3900 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3901 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3902
3903 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
3904 macro(_context_offset, k, "context", protectiondomain_signature, false); \
3905 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
3906 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \
3907 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false)
3908
3909 void java_security_AccessControlContext::compute_offsets() {
3910 assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3911 InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
3912 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3913 }
3914
3915 #if INCLUDE_CDS
3916 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
3917 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3918 }
3919 #endif
3920
3921 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3922 assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3923 // Ensure klass is initialized
3924 SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3925 // Allocate result
3926 oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3927 // Fill in values
3928 result->obj_field_put(_context_offset, context());
3929 result->obj_field_put(_privilegedContext_offset, privileged_context());
3930 result->bool_field_put(_isPrivileged_offset, isPrivileged);
3931 // whitelist AccessControlContexts created by the JVM if present
3932 if (_isAuthorized_offset != -1) {
3933 result->bool_field_put(_isAuthorized_offset, true);
3934 }
3935 return result;
3936 }
3937
3938
3939 // Support for java_lang_ClassLoader
3940
3941 bool java_lang_ClassLoader::offsets_computed = false;
3942 int java_lang_ClassLoader::_loader_data_offset = -1;
3943 int java_lang_ClassLoader::parallelCapable_offset = -1;
3944 int java_lang_ClassLoader::name_offset = -1;
3945 int java_lang_ClassLoader::nameAndId_offset = -1;
3946 int java_lang_ClassLoader::unnamedModule_offset = -1;
3947
3948 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
3949 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3950 return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
3951 }
3952
3953 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
3954 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3955 return RawAccess<>::load_at(loader, _loader_data_offset);
3956 }
3957
3958 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
3959 assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3960 HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
3961 }
3962
3963 #define CLASSLOADER_FIELDS_DO(macro) \
3964 macro(parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \
3965 macro(name_offset, k1, vmSymbols::name_name(), string_signature, false); \
3966 macro(nameAndId_offset, k1, "nameAndId", string_signature, false); \
3967 macro(unnamedModule_offset, k1, "unnamedModule", module_signature, false); \
3968 macro(parent_offset, k1, "parent", classloader_signature, false)
3969
3970 void java_lang_ClassLoader::compute_offsets() {
3971 assert(!offsets_computed, "offsets should be initialized only once");
3972 offsets_computed = true;
3973
3974 InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
3975 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3976
3977 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3978 }
3979
3980 #if INCLUDE_CDS
3981 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
3982 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3983 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3984 }
3985 #endif
3986
3987 oop java_lang_ClassLoader::parent(oop loader) {
3988 assert(is_instance(loader), "loader must be oop");
3989 return loader->obj_field(parent_offset);
3990 }
3991
3992 // Returns the name field of this class loader. If the name field has not
3993 // been set, null will be returned.
3994 oop java_lang_ClassLoader::name(oop loader) {
3995 assert(is_instance(loader), "loader must be oop");
3996 return loader->obj_field(name_offset);
3997 }
3998
3999 // Returns the nameAndId field of this class loader. The format is
4000 // as follows:
4001 // If the defining loader has a name explicitly set then '<loader-name>' @<id>
4002 // If the defining loader has no name then <qualified-class-name> @<id>
4003 // If built-in loader, then omit '@<id>' as there is only one instance.
4004 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4005 oop java_lang_ClassLoader::nameAndId(oop loader) {
4006 assert(is_instance(loader), "loader must be oop");
4007 return loader->obj_field(nameAndId_offset);
4008 }
4009
4010 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4011 assert(is_instance(loader), "loader must be oop");
4012 assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4013 oop acl = loader;
4014 debug_only(jint loop_count = 0);
4015 // This loop taken verbatim from ClassLoader.java:
4016 do {
4017 acl = parent(acl);
4018 if (cl == acl) {
4019 return true;
4020 }
4021 assert(++loop_count > 0, "loop_count overflow");
4022 } while (acl != NULL);
4023 return false;
4024 }
4025
4026 bool java_lang_ClassLoader::is_instance(oop obj) {
4027 return obj != NULL && is_subclass(obj->klass());
4028 }
4029
4030
4031 // For class loader classes, parallelCapable defined
4032 // based on non-null field
4033 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4034 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4035 if (parallelCapable_offset == -1) {
4036 // Default for backward compatibility is false
4037 return false;
4038 }
4039 return (class_loader->obj_field(parallelCapable_offset) != NULL);
4040 }
4041
4042 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4043 // Fix for 4474172; see evaluation for more details
4044 loader = non_reflection_class_loader(loader);
4045
4046 oop cl = SystemDictionary::java_system_loader();
4047 while(cl != NULL) {
4048 if (cl == loader) return true;
4049 cl = parent(cl);
4050 }
4051 return false;
4052 }
4053
4054 // Return true if this is one of the class loaders associated with
4055 // the generated bytecodes for reflection.
4056 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4057 if (loader != NULL) {
4058 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4059 // This might be null in non-1.4 JDKs
4060 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4061 }
4062 return false;
4063 }
4064
4065 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4066 // See whether this is one of the class loaders associated with
4067 // the generated bytecodes for reflection, and if so, "magically"
4068 // delegate to its parent to prevent class loading from occurring
4069 // in places where applications using reflection didn't expect it.
4070 if (is_reflection_class_loader(loader)) {
4071 return parent(loader);
4072 }
4073 return loader;
4074 }
4075
4076 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4077 assert(is_instance(loader), "loader must be oop");
4078 return loader->obj_field(unnamedModule_offset);
4079 }
4080
4081 // Support for java_lang_System
4082 //
4083 #define SYSTEM_FIELDS_DO(macro) \
4084 macro(static_in_offset, k, "in", input_stream_signature, true); \
4085 macro(static_out_offset, k, "out", print_stream_signature, true); \
4086 macro(static_err_offset, k, "err", print_stream_signature, true); \
4087 macro(static_security_offset, k, "security", security_manager_signature, true)
4088
4089 void java_lang_System::compute_offsets() {
4090 InstanceKlass* k = SystemDictionary::System_klass();
4091 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4092 }
4093
4094 #if INCLUDE_CDS
4095 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4096 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4097 }
4098 #endif
4099
4100 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4101 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4102 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4103
4104 // Support for jdk_internal_misc_UnsafeConstants
4105 //
4106 class UnsafeConstantsFixup : public FieldClosure {
4107 private:
4108 int _address_size;
4109 int _page_size;
4110 bool _big_endian;
4111 bool _use_unaligned_access;
4112 int _data_cache_line_flush_size;
4113 public:
4114 UnsafeConstantsFixup() {
4115 // round up values for all static final fields
4116 _address_size = sizeof(void*);
4117 _page_size = os::vm_page_size();
4118 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4119 _use_unaligned_access = UseUnalignedAccesses;
4120 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4121 }
4122
4123 void do_field(fieldDescriptor* fd) {
4124 oop mirror = fd->field_holder()->java_mirror();
4125 assert(mirror != NULL, "UnsafeConstants must have mirror already");
4126 assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4127 assert(fd->is_final(), "fields of UnsafeConstants must be final");
4128 assert(fd->is_static(), "fields of UnsafeConstants must be static");
4129 if (fd->name() == vmSymbols::address_size_name()) {
4130 mirror->int_field_put(fd->offset(), _address_size);
4131 } else if (fd->name() == vmSymbols::page_size_name()) {
4132 mirror->int_field_put(fd->offset(), _page_size);
4133 } else if (fd->name() == vmSymbols::big_endian_name()) {
4134 mirror->bool_field_put(fd->offset(), _big_endian);
4135 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4136 mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4137 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4138 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4139 } else {
4140 assert(false, "unexpected UnsafeConstants field");
4141 }
4142 }
4143 };
4144
4145 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4146 UnsafeConstantsFixup fixup;
4147 SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4148 }
4149
4150 int java_lang_Class::_klass_offset;
4151 int java_lang_Class::_array_klass_offset;
4152 int java_lang_Class::_oop_size_offset;
4153 int java_lang_Class::_static_oop_field_count_offset;
4154 int java_lang_Class::_class_loader_offset;
4155 int java_lang_Class::_module_offset;
4156 int java_lang_Class::_protection_domain_offset;
4157 int java_lang_Class::_component_mirror_offset;
4158 int java_lang_Class::_init_lock_offset;
4159 int java_lang_Class::_signers_offset;
4160 int java_lang_Class::_name_offset;
4161 int java_lang_Class::_source_file_offset;
4162 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4163 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4164 int java_lang_Throwable::backtrace_offset;
4165 int java_lang_Throwable::detailMessage_offset;
4166 int java_lang_Throwable::stackTrace_offset;
4167 int java_lang_Throwable::depth_offset;
4168 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4169 int java_lang_reflect_AccessibleObject::override_offset;
4170 int java_lang_reflect_Method::clazz_offset;
4171 int java_lang_reflect_Method::name_offset;
4172 int java_lang_reflect_Method::returnType_offset;
4173 int java_lang_reflect_Method::parameterTypes_offset;
4174 int java_lang_reflect_Method::exceptionTypes_offset;
4175 int java_lang_reflect_Method::slot_offset;
4176 int java_lang_reflect_Method::modifiers_offset;
4177 int java_lang_reflect_Method::signature_offset;
4178 int java_lang_reflect_Method::annotations_offset;
4179 int java_lang_reflect_Method::parameter_annotations_offset;
4180 int java_lang_reflect_Method::annotation_default_offset;
4181 int java_lang_reflect_Constructor::clazz_offset;
4182 int java_lang_reflect_Constructor::parameterTypes_offset;
4183 int java_lang_reflect_Constructor::exceptionTypes_offset;
4184 int java_lang_reflect_Constructor::slot_offset;
4185 int java_lang_reflect_Constructor::modifiers_offset;
4186 int java_lang_reflect_Constructor::signature_offset;
4187 int java_lang_reflect_Constructor::annotations_offset;
4188 int java_lang_reflect_Constructor::parameter_annotations_offset;
4189 int java_lang_reflect_Field::clazz_offset;
4190 int java_lang_reflect_Field::name_offset;
4191 int java_lang_reflect_Field::type_offset;
4192 int java_lang_reflect_Field::slot_offset;
4193 int java_lang_reflect_Field::modifiers_offset;
4194 int java_lang_reflect_Field::signature_offset;
4195 int java_lang_reflect_Field::annotations_offset;
4196 int java_lang_reflect_Parameter::name_offset;
4197 int java_lang_reflect_Parameter::modifiers_offset;
4198 int java_lang_reflect_Parameter::index_offset;
4199 int java_lang_reflect_Parameter::executable_offset;
4200 int java_lang_boxing_object::value_offset;
4201 int java_lang_boxing_object::long_value_offset;
4202 int java_lang_ref_Reference::referent_offset;
4203 int java_lang_ref_Reference::queue_offset;
4204 int java_lang_ref_Reference::next_offset;
4205 int java_lang_ref_Reference::discovered_offset;
4206 int java_lang_ref_SoftReference::timestamp_offset;
4207 int java_lang_ref_SoftReference::static_clock_offset;
4208 int java_lang_ClassLoader::parent_offset;
4209 int java_lang_System::static_in_offset;
4210 int java_lang_System::static_out_offset;
4211 int java_lang_System::static_err_offset;
4212 int java_lang_System::static_security_offset;
4213 int java_lang_StackTraceElement::methodName_offset;
4214 int java_lang_StackTraceElement::fileName_offset;
4215 int java_lang_StackTraceElement::lineNumber_offset;
4216 int java_lang_StackTraceElement::moduleName_offset;
4217 int java_lang_StackTraceElement::moduleVersion_offset;
4218 int java_lang_StackTraceElement::classLoaderName_offset;
4219 int java_lang_StackTraceElement::declaringClass_offset;
4220 int java_lang_StackTraceElement::declaringClassObject_offset;
4221 int java_lang_StackFrameInfo::_memberName_offset;
4222 int java_lang_StackFrameInfo::_bci_offset;
4223 int java_lang_StackFrameInfo::_version_offset;
4224 int java_lang_LiveStackFrameInfo::_monitors_offset;
4225 int java_lang_LiveStackFrameInfo::_locals_offset;
4226 int java_lang_LiveStackFrameInfo::_operands_offset;
4227 int java_lang_LiveStackFrameInfo::_mode_offset;
4228 int java_lang_AssertionStatusDirectives::classes_offset;
4229 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4230 int java_lang_AssertionStatusDirectives::packages_offset;
4231 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4232 int java_lang_AssertionStatusDirectives::deflt_offset;
4233 int java_nio_Buffer::_limit_offset;
4234 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4235 int reflect_ConstantPool::_oop_offset;
4236 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4237 int java_lang_Integer_IntegerCache::_static_cache_offset;
4238 int java_lang_Long_LongCache::_static_cache_offset;
4239 int java_lang_Character_CharacterCache::_static_cache_offset;
4240 int java_lang_Short_ShortCache::_static_cache_offset;
4241 int java_lang_Byte_ByteCache::_static_cache_offset;
4242 int java_lang_Boolean::_static_TRUE_offset;
4243 int java_lang_Boolean::_static_FALSE_offset;
4244
4245
4246
4247 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4248 macro(declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \
4249 macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4250 macro(moduleName_offset, k, "moduleName", string_signature, false); \
4251 macro(moduleVersion_offset, k, "moduleVersion", string_signature, false); \
4252 macro(declaringClass_offset, k, "declaringClass", string_signature, false); \
4253 macro(methodName_offset, k, "methodName", string_signature, false); \
4254 macro(fileName_offset, k, "fileName", string_signature, false); \
4255 macro(lineNumber_offset, k, "lineNumber", int_signature, false)
4256
4257 // Support for java_lang_StackTraceElement
4258 void java_lang_StackTraceElement::compute_offsets() {
4259 InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4260 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4261 }
4262
4263 #if INCLUDE_CDS
4264 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4265 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4266 }
4267 #endif
4268
4269 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4270 element->obj_field_put(fileName_offset, value);
4271 }
4272
4273 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4274 element->obj_field_put(declaringClass_offset, value);
4275 }
4276
4277 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4278 element->obj_field_put(methodName_offset, value);
4279 }
4280
4281 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4282 element->int_field_put(lineNumber_offset, value);
4283 }
4284
4285 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4286 element->obj_field_put(moduleName_offset, value);
4287 }
4288
4289 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4290 element->obj_field_put(moduleVersion_offset, value);
4291 }
4292
4293 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4294 element->obj_field_put(classLoaderName_offset, value);
4295 }
4296
4297 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4298 element->obj_field_put(declaringClassObject_offset, value);
4299 }
4300
4301 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4302 element->short_field_put(_version_offset, value);
4303 }
4304
4305 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4306 assert(value >= 0 && value < max_jushort, "must be a valid bci value");
4307 element->int_field_put(_bci_offset, value);
4308 }
4309
4310 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4311 element->obj_field_put(_monitors_offset, value);
4312 }
4313
4314 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4315 element->obj_field_put(_locals_offset, value);
4316 }
4317
4318 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4319 element->obj_field_put(_operands_offset, value);
4320 }
4321
4322 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4323 element->int_field_put(_mode_offset, value);
4324 }
4325
4326 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4327 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4328 macro(classes_offset, k, "classes", string_array_signature, false); \
4329 macro(classEnabled_offset, k, "classEnabled", bool_array_signature, false); \
4330 macro(packages_offset, k, "packages", string_array_signature, false); \
4331 macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \
4332 macro(deflt_offset, k, "deflt", bool_signature, false)
4333
4334 void java_lang_AssertionStatusDirectives::compute_offsets() {
4335 InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4336 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4337 }
4338
4339 #if INCLUDE_CDS
4340 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4341 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4342 }
4343 #endif
4344
4345 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4346 o->obj_field_put(classes_offset, val);
4347 }
4348
4349 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4350 o->obj_field_put(classEnabled_offset, val);
4351 }
4352
4353 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4354 o->obj_field_put(packages_offset, val);
4355 }
4356
4357 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4358 o->obj_field_put(packageEnabled_offset, val);
4359 }
4360
4361 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4362 o->bool_field_put(deflt_offset, val);
4363 }
4364
4365
4366 // Support for intrinsification of java.nio.Buffer.checkIndex
4367 int java_nio_Buffer::limit_offset() {
4368 return _limit_offset;
4369 }
4370
4371 #define BUFFER_FIELDS_DO(macro) \
4372 macro(_limit_offset, k, "limit", int_signature, false)
4373
4374 void java_nio_Buffer::compute_offsets() {
4375 InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4376 assert(k != NULL, "must be loaded in 1.4+");
4377 BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4378 }
4379
4380 #if INCLUDE_CDS
4381 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4382 BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4383 }
4384 #endif
4385
4386 #define AOS_FIELDS_DO(macro) \
4387 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4388
4389 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4390 InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4391 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4392 }
4393
4394 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4395 assert(_owner_offset != 0, "Must be initialized");
4396 return obj->obj_field(_owner_offset);
4397 }
4398
4399 #if INCLUDE_CDS
4400 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4401 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4402 }
4403 #endif
4404
4405 #define INTEGER_CACHE_FIELDS_DO(macro) \
4406 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4407
4408 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4409 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4410 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4411 }
4412
4413 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4414 oop base = ik->static_field_base_raw();
4415 return objArrayOop(base->obj_field(_static_cache_offset));
4416 }
4417
4418 Symbol* java_lang_Integer_IntegerCache::symbol() {
4419 return vmSymbols::java_lang_Integer_IntegerCache();
4420 }
4421
4422 #if INCLUDE_CDS
4423 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4424 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4425 }
4426 #endif
4427 #undef INTEGER_CACHE_FIELDS_DO
4428
4429 jint java_lang_Integer::value(oop obj) {
4430 jvalue v;
4431 java_lang_boxing_object::get_value(obj, &v);
4432 return v.i;
4433 }
4434
4435 #define LONG_CACHE_FIELDS_DO(macro) \
4436 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4437
4438 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4439 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4440 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4441 }
4442
4443 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4444 oop base = ik->static_field_base_raw();
4445 return objArrayOop(base->obj_field(_static_cache_offset));
4446 }
4447
4448 Symbol* java_lang_Long_LongCache::symbol() {
4449 return vmSymbols::java_lang_Long_LongCache();
4450 }
4451
4452 #if INCLUDE_CDS
4453 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4454 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4455 }
4456 #endif
4457 #undef LONG_CACHE_FIELDS_DO
4458
4459 jlong java_lang_Long::value(oop obj) {
4460 jvalue v;
4461 java_lang_boxing_object::get_value(obj, &v);
4462 return v.j;
4463 }
4464
4465 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4466 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4467
4468 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4469 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4470 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4471 }
4472
4473 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4474 oop base = ik->static_field_base_raw();
4475 return objArrayOop(base->obj_field(_static_cache_offset));
4476 }
4477
4478 Symbol* java_lang_Character_CharacterCache::symbol() {
4479 return vmSymbols::java_lang_Character_CharacterCache();
4480 }
4481
4482 #if INCLUDE_CDS
4483 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4484 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4485 }
4486 #endif
4487 #undef CHARACTER_CACHE_FIELDS_DO
4488
4489 jchar java_lang_Character::value(oop obj) {
4490 jvalue v;
4491 java_lang_boxing_object::get_value(obj, &v);
4492 return v.c;
4493 }
4494
4495 #define SHORT_CACHE_FIELDS_DO(macro) \
4496 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4497
4498 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4499 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4500 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4501 }
4502
4503 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4504 oop base = ik->static_field_base_raw();
4505 return objArrayOop(base->obj_field(_static_cache_offset));
4506 }
4507
4508 Symbol* java_lang_Short_ShortCache::symbol() {
4509 return vmSymbols::java_lang_Short_ShortCache();
4510 }
4511
4512 #if INCLUDE_CDS
4513 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4514 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4515 }
4516 #endif
4517 #undef SHORT_CACHE_FIELDS_DO
4518
4519 jshort java_lang_Short::value(oop obj) {
4520 jvalue v;
4521 java_lang_boxing_object::get_value(obj, &v);
4522 return v.s;
4523 }
4524
4525 #define BYTE_CACHE_FIELDS_DO(macro) \
4526 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4527
4528 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4529 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4530 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4531 }
4532
4533 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4534 oop base = ik->static_field_base_raw();
4535 return objArrayOop(base->obj_field(_static_cache_offset));
4536 }
4537
4538 Symbol* java_lang_Byte_ByteCache::symbol() {
4539 return vmSymbols::java_lang_Byte_ByteCache();
4540 }
4541
4542 #if INCLUDE_CDS
4543 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4544 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4545 }
4546 #endif
4547 #undef BYTE_CACHE_FIELDS_DO
4548
4549 jbyte java_lang_Byte::value(oop obj) {
4550 jvalue v;
4551 java_lang_boxing_object::get_value(obj, &v);
4552 return v.b;
4553 }
4554 #define BOOLEAN_FIELDS_DO(macro) \
4555 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4556 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4557
4558
4559 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4560 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4561 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4562 }
4563
4564 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4565 oop base = ik->static_field_base_raw();
4566 return base->obj_field(_static_TRUE_offset);
4567 }
4568
4569 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4570 oop base = ik->static_field_base_raw();
4571 return base->obj_field(_static_FALSE_offset);
4572 }
4573
4574 Symbol* java_lang_Boolean::symbol() {
4575 return vmSymbols::java_lang_Boolean();
4576 }
4577
4578 #if INCLUDE_CDS
4579 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4580 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4581 }
4582 #endif
4583 #undef BOOLEAN_CACHE_FIELDS_DO
4584
4585 jboolean java_lang_Boolean::value(oop obj) {
4586 jvalue v;
4587 java_lang_boxing_object::get_value(obj, &v);
4588 return v.z;
4589 }
4590
4591 static int member_offset(int hardcoded_offset) {
4592 return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4593 }
4594
4595 // Compute hard-coded offsets
4596 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4597 // are not available to determine the offset_of_static_fields.
4598 void JavaClasses::compute_hard_coded_offsets() {
4599
4600 // java_lang_boxing_object
4601 java_lang_boxing_object::value_offset = member_offset(java_lang_boxing_object::hc_value_offset);
4602 java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4603
4604 // java_lang_ref_Reference
4605 java_lang_ref_Reference::referent_offset = member_offset(java_lang_ref_Reference::hc_referent_offset);
4606 java_lang_ref_Reference::queue_offset = member_offset(java_lang_ref_Reference::hc_queue_offset);
4607 java_lang_ref_Reference::next_offset = member_offset(java_lang_ref_Reference::hc_next_offset);
4608 java_lang_ref_Reference::discovered_offset = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4609 }
4610
4611 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4612
4613 // Compute non-hard-coded field offsets of all the classes in this file
4614 void JavaClasses::compute_offsets() {
4615 if (UseSharedSpaces) {
4616 assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4617 JvmtiExport::has_early_class_hook_env()),
4618 "JavaClasses::compute_offsets() must be called in early JVMTI phase.");
4619 // None of the classes used by the rest of this function can be replaced by
4620 // JMVTI ClassFileLoadHook.
4621 // We are safe to use the archived offsets, which have already been restored
4622 // by JavaClasses::serialize_offsets, without computing the offsets again.
4623 return;
4624 }
4625
4626 // We have already called the compute_offsets() of the
4627 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String and java_lang_Class)
4628 // earlier inside SystemDictionary::resolve_well_known_classes()
4629 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4630 }
4631
4632 #if INCLUDE_CDS
4633 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4634
4635 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4636 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4637 }
4638 #endif
4639
4640
4641 #ifndef PRODUCT
4642
4643 // These functions exist to assert the validity of hard-coded field offsets to guard
4644 // against changes in the class files
4645
4646 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4647 EXCEPTION_MARK;
4648 fieldDescriptor fd;
4649 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4650 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4651 InstanceKlass* ik = InstanceKlass::cast(k);
4652 TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4653 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig);
4654 if (!ik->find_local_field(f_name, f_sig, &fd)) {
4655 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4656 return false;
4657 }
4658 if (fd.is_static()) {
4659 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4660 return false;
4661 }
4662 if (fd.offset() == hardcoded_offset ) {
4663 return true;
4664 } else {
4665 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4666 klass_name, field_name, hardcoded_offset, fd.offset());
4667 return false;
4668 }
4669 }
4670
4671 // Check the hard-coded field offsets of all the classes in this file
4672
4673 void JavaClasses::check_offsets() {
4674 bool valid = true;
4675
4676 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4677 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4678
4679 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4680 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4681
4682 // Boxed primitive objects (java_lang_boxing_object)
4683
4684 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
4685 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4686 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
4687 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4688 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
4689 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
4690 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
4691 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4692
4693 // java.lang.ref.Reference
4694
4695 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4696 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4697 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4698 // Fake field
4699 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4700
4701 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4702 }
4703
4704 #endif // PRODUCT
4705
4706 int InjectedField::compute_offset() {
4707 InstanceKlass* ik = InstanceKlass::cast(klass());
4708 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4709 if (!may_be_java && !fs.access_flags().is_internal()) {
4710 // Only look at injected fields
4711 continue;
4712 }
4713 if (fs.name() == name() && fs.signature() == signature()) {
4714 return fs.offset();
4715 }
4716 }
4717 ResourceMark rm;
4718 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)" : "");
4719 #ifndef PRODUCT
4720 ik->print();
4721 tty->print_cr("all fields:");
4722 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4723 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4724 }
4725 #endif //PRODUCT
4726 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
4727 return -1;
4728 }
4729
4730 void javaClasses_init() {
4731 JavaClasses::compute_offsets();
4732 JavaClasses::check_offsets();
4733 FilteredFieldsMap::initialize(); // must be done after computing offsets.
4734 }