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/recordComponent.hpp"
  54 #include "oops/typeArrayOop.inline.hpp"
  55 #include "prims/jvmtiExport.hpp"
  56 #include "prims/resolvedMethodTable.hpp"
  57 #include "runtime/fieldDescriptor.inline.hpp"
  58 #include "runtime/frame.inline.hpp"
  59 #include "runtime/handles.inline.hpp"
  60 #include "runtime/interfaceSupport.inline.hpp"
  61 #include "runtime/java.hpp"
  62 #include "runtime/javaCalls.hpp"
  63 #include "runtime/jniHandles.inline.hpp"
  64 #include "runtime/safepoint.hpp"
  65 #include "runtime/safepointVerifiers.hpp"
  66 #include "runtime/thread.inline.hpp"
  67 #include "runtime/vframe.inline.hpp"
  68 #include "runtime/vm_version.hpp"
  69 #include "utilities/align.hpp"
  70 #include "utilities/preserveException.hpp"
  71 #include "utilities/utf8.hpp"
  72 #if INCLUDE_JVMCI
  73 #include "jvmci/jvmciJavaClasses.hpp"
  74 #endif
  75 
  76 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java)    \
  77   klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
  78 
  79 #if INCLUDE_CDS
  80 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
  81   f->do_u4((u4*)&_##name##_offset);
  82 #endif
  83 
  84 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java)           \
  85   { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
  86 
  87 InjectedField JavaClasses::_injected_fields[] = {
  88   ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
  89 };
  90 
  91 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
  92   return _injected_fields[id].compute_offset();
  93 }
  94 
  95 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
  96   *field_count = 0;
  97 
  98   vmSymbols::SID sid = vmSymbols::find_sid(class_name);
  99   if (sid == vmSymbols::NO_SID) {
 100     // Only well known classes can inject fields
 101     return NULL;
 102   }
 103 
 104   int count = 0;
 105   int start = -1;
 106 
 107 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
 108   if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) {              \
 109     count++;                                                       \
 110     if (start == -1) start = klass##_##name##_enum;                \
 111   }
 112   ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
 113 #undef LOOKUP_INJECTED_FIELD
 114 
 115   if (start != -1) {
 116     *field_count = count;
 117     return _injected_fields + start;
 118   }
 119   return NULL;
 120 }
 121 
 122 
 123 // Helpful routine for computing field offsets at run time rather than hardcoding them
 124 // Finds local fields only, including static fields.  Static field offsets are from the
 125 // beginning of the mirror.
 126 static void compute_offset(int &dest_offset,
 127                            InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
 128                            bool is_static = false) {
 129   fieldDescriptor fd;
 130   if (ik == NULL) {
 131     ResourceMark rm;
 132     log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
 133     vm_exit_during_initialization("Invalid layout of well-known class");
 134   }
 135 
 136   if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
 137     ResourceMark rm;
 138     log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
 139                      name_symbol->as_C_string(), signature_symbol->as_C_string());
 140 #ifndef PRODUCT
 141     // Prints all fields and offsets
 142     Log(class) lt;
 143     LogStream ls(lt.error());
 144     ik->print_on(&ls);
 145 #endif //PRODUCT
 146     vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
 147   }
 148   dest_offset = fd.offset();
 149 }
 150 
 151 // Overloading to pass name as a string.
 152 static void compute_offset(int& dest_offset, InstanceKlass* ik,
 153                            const char* name_string, Symbol* signature_symbol,
 154                            bool is_static = false) {
 155   TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
 156   if (name == NULL) {
 157     ResourceMark rm;
 158     log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
 159     vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
 160   }
 161   compute_offset(dest_offset, ik, name, signature_symbol, is_static);
 162 }
 163 
 164 int java_lang_String::value_offset  = 0;
 165 int java_lang_String::hash_offset   = 0;
 166 int java_lang_String::hashIsZero_offset = 0;
 167 int java_lang_String::coder_offset  = 0;
 168 
 169 bool java_lang_String::initialized  = false;
 170 
 171 bool java_lang_String::is_instance(oop obj) {
 172   return is_instance_inlined(obj);
 173 }
 174 
 175 #if INCLUDE_CDS
 176 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
 177   f->do_u4((u4*)&offset)
 178 #endif
 179 
 180 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
 181   compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
 182 
 183 #define STRING_FIELDS_DO(macro) \
 184   macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
 185   macro(hash_offset,  k, "hash",                  int_signature,        false); \
 186   macro(hashIsZero_offset, k, "hashIsZero",       bool_signature,       false); \
 187   macro(coder_offset, k, "coder",                 byte_signature,       false);
 188 
 189 void java_lang_String::compute_offsets() {
 190   if (initialized) {
 191     return;
 192   }
 193 
 194   InstanceKlass* k = SystemDictionary::String_klass();
 195   STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
 196 
 197   initialized = true;
 198 }
 199 
 200 #if INCLUDE_CDS
 201 void java_lang_String::serialize_offsets(SerializeClosure* f) {
 202   STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
 203   f->do_bool(&initialized);
 204 }
 205 #endif
 206 
 207 class CompactStringsFixup : public FieldClosure {
 208 private:
 209   bool _value;
 210 
 211 public:
 212   CompactStringsFixup(bool value) : _value(value) {}
 213 
 214   void do_field(fieldDescriptor* fd) {
 215     if (fd->name() == vmSymbols::compact_strings_name()) {
 216       oop mirror = fd->field_holder()->java_mirror();
 217       assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
 218       assert(mirror != NULL, "String must have mirror already");
 219       mirror->bool_field_put(fd->offset(), _value);
 220     }
 221   }
 222 };
 223 
 224 void java_lang_String::set_compact_strings(bool value) {
 225   CompactStringsFixup fix(value);
 226   SystemDictionary::String_klass()->do_local_static_fields(&fix);
 227 }
 228 
 229 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
 230   assert(initialized, "Must be initialized");
 231   assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
 232 
 233   // Create the String object first, so there's a chance that the String
 234   // and the char array it points to end up in the same cache line.
 235   oop obj;
 236   obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
 237 
 238   // Create the char array.  The String object must be handlized here
 239   // because GC can happen as a result of the allocation attempt.
 240   Handle h_obj(THREAD, obj);
 241   int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
 242   typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
 243 
 244   // Point the String at the char array
 245   obj = h_obj();
 246   set_value(obj, buffer);
 247   // No need to zero the offset, allocation zero'ed the entire String object
 248   set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
 249   return h_obj;
 250 }
 251 
 252 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
 253   bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
 254   Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
 255   typeArrayOop buffer = value(h_obj());
 256   assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
 257   if (is_latin1) {
 258     for (int index = 0; index < length; index++) {
 259       buffer->byte_at_put(index, (jbyte)unicode[index]);
 260     }
 261   } else {
 262     for (int index = 0; index < length; index++) {
 263       buffer->char_at_put(index, unicode[index]);
 264     }
 265   }
 266 
 267 #ifdef ASSERT
 268   {
 269     ResourceMark rm;
 270     char* expected = UNICODE::as_utf8(unicode, length);
 271     char* actual = as_utf8_string(h_obj());
 272     if (strcmp(expected, actual) != 0) {
 273       tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
 274       ShouldNotReachHere();
 275     }
 276   }
 277 #endif
 278 
 279   return h_obj;
 280 }
 281 
 282 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
 283   Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
 284   return h_obj();
 285 }
 286 
 287 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
 288   if (utf8_str == NULL) {
 289     return Handle();
 290   }
 291   bool has_multibyte, is_latin1;
 292   int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
 293   if (!CompactStrings) {
 294     has_multibyte = true;
 295     is_latin1 = false;
 296   }
 297 
 298   Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
 299   if (length > 0) {
 300     if (!has_multibyte) {
 301       const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
 302       ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
 303     } else if (is_latin1) {
 304       UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
 305     } else {
 306       UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
 307     }
 308   }
 309 
 310 #ifdef ASSERT
 311   // This check is too strict because the input string is not necessarily valid UTF8.
 312   // For example, it may be created with arbitrary content via jni_NewStringUTF.
 313   /*
 314   {
 315     ResourceMark rm;
 316     const char* expected = utf8_str;
 317     char* actual = as_utf8_string(h_obj());
 318     if (strcmp(expected, actual) != 0) {
 319       tty->print_cr("String conversion failure: %s --> %s", expected, actual);
 320       ShouldNotReachHere();
 321     }
 322   }
 323   */
 324 #endif
 325 
 326   return h_obj;
 327 }
 328 
 329 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
 330   Handle h_obj = create_from_str(utf8_str, CHECK_0);
 331   return h_obj();
 332 }
 333 
 334 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
 335   const char* utf8_str = (char*)symbol->bytes();
 336   int utf8_len = symbol->utf8_length();
 337 
 338   bool has_multibyte, is_latin1;
 339   int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
 340   if (!CompactStrings) {
 341     has_multibyte = true;
 342     is_latin1 = false;
 343   }
 344 
 345   Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
 346   if (length > 0) {
 347     if (!has_multibyte) {
 348       const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
 349       ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
 350     } else if (is_latin1) {
 351       UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
 352     } else {
 353       UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
 354     }
 355   }
 356 
 357 #ifdef ASSERT
 358   {
 359     ResourceMark rm;
 360     const char* expected = symbol->as_utf8();
 361     char* actual = as_utf8_string(h_obj());
 362     if (strncmp(expected, actual, utf8_len) != 0) {
 363       tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
 364       ShouldNotReachHere();
 365     }
 366   }
 367 #endif
 368 
 369   return h_obj;
 370 }
 371 
 372 // Converts a C string to a Java String based on current encoding
 373 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
 374   assert(str != NULL, "bad arguments");
 375 
 376   typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
 377   static to_java_string_fn_t _to_java_string_fn = NULL;
 378 
 379   if (_to_java_string_fn == NULL) {
 380     void *lib_handle = os::native_java_library();
 381     _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
 382     if (_to_java_string_fn == NULL) {
 383       fatal("NewStringPlatform missing");
 384     }
 385   }
 386 
 387   jstring js = NULL;
 388   {
 389     assert(THREAD->is_Java_thread(), "must be java thread");
 390     JavaThread* thread = (JavaThread*)THREAD;
 391     HandleMark hm(thread);
 392     ThreadToNativeFromVM ttn(thread);
 393     js = (_to_java_string_fn)(thread->jni_environment(), str);
 394   }
 395 
 396   Handle native_platform_string(THREAD, JNIHandles::resolve(js));
 397   JNIHandles::destroy_local(js);  // destroy local JNIHandle.
 398   return native_platform_string;
 399 }
 400 
 401 // Converts a Java String to a native C string that can be used for
 402 // native OS calls.
 403 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
 404   typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
 405   static to_platform_string_fn_t _to_platform_string_fn = NULL;
 406 
 407   if (_to_platform_string_fn == NULL) {
 408     void *lib_handle = os::native_java_library();
 409     _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
 410     if (_to_platform_string_fn == NULL) {
 411       fatal("GetStringPlatformChars missing");
 412     }
 413   }
 414 
 415   char *native_platform_string;
 416   { JavaThread* thread = (JavaThread*)THREAD;
 417     assert(thread->is_Java_thread(), "must be java thread");
 418     JNIEnv *env = thread->jni_environment();
 419     jstring js = (jstring) JNIHandles::make_local(env, java_string());
 420     bool is_copy;
 421     HandleMark hm(thread);
 422     ThreadToNativeFromVM ttn(thread);
 423     native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
 424     assert(is_copy == JNI_TRUE, "is_copy value changed");
 425     JNIHandles::destroy_local(js);
 426   }
 427   return native_platform_string;
 428 }
 429 
 430 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
 431   oop          obj    = java_string();
 432   // Typical usage is to convert all '/' to '.' in string.
 433   typeArrayOop value  = java_lang_String::value(obj);
 434   int          length = java_lang_String::length(obj, value);
 435   bool      is_latin1 = java_lang_String::is_latin1(obj);
 436 
 437   // First check if any from_char exist
 438   int index; // Declared outside, used later
 439   for (index = 0; index < length; index++) {
 440     jchar c = !is_latin1 ? value->char_at(index) :
 441                   ((jchar) value->byte_at(index)) & 0xff;
 442     if (c == from_char) {
 443       break;
 444     }
 445   }
 446   if (index == length) {
 447     // No from_char, so do not copy.
 448     return java_string;
 449   }
 450 
 451   // Check if result string will be latin1
 452   bool to_is_latin1 = false;
 453 
 454   // Replacement char must be latin1
 455   if (CompactStrings && UNICODE::is_latin1(to_char)) {
 456     if (is_latin1) {
 457       // Source string is latin1 as well
 458       to_is_latin1 = true;
 459     } else if (!UNICODE::is_latin1(from_char)) {
 460       // We are replacing an UTF16 char. Scan string to
 461       // check if result can be latin1 encoded.
 462       to_is_latin1 = true;
 463       for (index = 0; index < length; index++) {
 464         jchar c = value->char_at(index);
 465         if (c != from_char && !UNICODE::is_latin1(c)) {
 466           to_is_latin1 = false;
 467           break;
 468         }
 469       }
 470     }
 471   }
 472 
 473   // Create new UNICODE (or byte) buffer. Must handlize value because GC
 474   // may happen during String and char array creation.
 475   typeArrayHandle h_value(THREAD, value);
 476   Handle string = basic_create(length, to_is_latin1, CHECK_NH);
 477   typeArrayOop from_buffer = h_value();
 478   typeArrayOop to_buffer = java_lang_String::value(string());
 479 
 480   // Copy contents
 481   for (index = 0; index < length; index++) {
 482     jchar c = (!is_latin1) ? from_buffer->char_at(index) :
 483                     ((jchar) from_buffer->byte_at(index)) & 0xff;
 484     if (c == from_char) {
 485       c = to_char;
 486     }
 487     if (!to_is_latin1) {
 488       to_buffer->char_at_put(index, c);
 489     } else {
 490       to_buffer->byte_at_put(index, (jbyte) c);
 491     }
 492   }
 493   return string;
 494 }
 495 
 496 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
 497   typeArrayOop value  = java_lang_String::value(java_string);
 498                length = java_lang_String::length(java_string, value);
 499   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 500 
 501   jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
 502   if (result != NULL) {
 503     if (!is_latin1) {
 504       for (int index = 0; index < length; index++) {
 505         result[index] = value->char_at(index);
 506       }
 507     } else {
 508       for (int index = 0; index < length; index++) {
 509         result[index] = ((jchar) value->byte_at(index)) & 0xff;
 510       }
 511     }
 512   } else {
 513     THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
 514   }
 515   return result;
 516 }
 517 
 518 unsigned int java_lang_String::hash_code(oop java_string) {
 519   // The hash and hashIsZero fields are subject to a benign data race,
 520   // making it crucial to ensure that any observable result of the
 521   // calculation in this method stays correct under any possible read of
 522   // these fields. Necessary restrictions to allow this to be correct
 523   // without explicit memory fences or similar concurrency primitives is
 524   // that we can ever only write to one of these two fields for a given
 525   // String instance, and that the computation is idempotent and derived
 526   // from immutable state
 527   assert(initialized && (hash_offset > 0) && (hashIsZero_offset > 0), "Must be initialized");
 528   if (java_lang_String::hash_is_set(java_string)) {
 529     return java_string->int_field(hash_offset);
 530   }
 531 
 532   typeArrayOop value = java_lang_String::value(java_string);
 533   int         length = java_lang_String::length(java_string, value);
 534   bool     is_latin1 = java_lang_String::is_latin1(java_string);
 535 
 536   unsigned int hash = 0;
 537   if (length > 0) {
 538     if (is_latin1) {
 539       hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
 540     } else {
 541       hash = java_lang_String::hash_code(value->char_at_addr(0), length);
 542     }
 543   }
 544 
 545   if (hash != 0) {
 546     java_string->int_field_put(hash_offset, hash);
 547   } else {
 548     java_string->bool_field_put(hashIsZero_offset, true);
 549   }
 550   return hash;
 551 }
 552 
 553 char* java_lang_String::as_quoted_ascii(oop java_string) {
 554   typeArrayOop value  = java_lang_String::value(java_string);
 555   int          length = java_lang_String::length(java_string, value);
 556   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 557 
 558   if (length == 0) return NULL;
 559 
 560   char* result;
 561   int result_length;
 562   if (!is_latin1) {
 563     jchar* base = value->char_at_addr(0);
 564     result_length = UNICODE::quoted_ascii_length(base, length) + 1;
 565     result = NEW_RESOURCE_ARRAY(char, result_length);
 566     UNICODE::as_quoted_ascii(base, length, result, result_length);
 567   } else {
 568     jbyte* base = value->byte_at_addr(0);
 569     result_length = UNICODE::quoted_ascii_length(base, length) + 1;
 570     result = NEW_RESOURCE_ARRAY(char, result_length);
 571     UNICODE::as_quoted_ascii(base, length, result, result_length);
 572   }
 573   assert(result_length >= length + 1, "must not be shorter");
 574   assert(result_length == (int)strlen(result) + 1, "must match");
 575   return result;
 576 }
 577 
 578 Symbol* java_lang_String::as_symbol(oop java_string) {
 579   typeArrayOop value  = java_lang_String::value(java_string);
 580   int          length = java_lang_String::length(java_string, value);
 581   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 582   if (!is_latin1) {
 583     jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
 584     Symbol* sym = SymbolTable::new_symbol(base, length);
 585     return sym;
 586   } else {
 587     ResourceMark rm;
 588     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 589     const char* base = UNICODE::as_utf8(position, length);
 590     Symbol* sym = SymbolTable::new_symbol(base, length);
 591     return sym;
 592   }
 593 }
 594 
 595 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
 596   typeArrayOop value  = java_lang_String::value(java_string);
 597   int          length = java_lang_String::length(java_string, value);
 598   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 599   if (!is_latin1) {
 600     jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
 601     return SymbolTable::probe_unicode(base, length);
 602   } else {
 603     ResourceMark rm;
 604     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 605     const char* base = UNICODE::as_utf8(position, length);
 606     return SymbolTable::probe(base, length);
 607   }
 608 }
 609 
 610 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
 611   assert(value_equals(value, java_lang_String::value(java_string)),
 612          "value must be same as java_lang_String::value(java_string)");
 613   int length = java_lang_String::length(java_string, value);
 614   if (length == 0) {
 615     return 0;
 616   }
 617   if (!java_lang_String::is_latin1(java_string)) {
 618     return UNICODE::utf8_length(value->char_at_addr(0), length);
 619   } else {
 620     return UNICODE::utf8_length(value->byte_at_addr(0), length);
 621   }
 622 }
 623 
 624 int java_lang_String::utf8_length(oop java_string) {
 625   typeArrayOop value = java_lang_String::value(java_string);
 626   return utf8_length(java_string, value);
 627 }
 628 
 629 char* java_lang_String::as_utf8_string(oop java_string) {
 630   typeArrayOop value  = java_lang_String::value(java_string);
 631   int          length = java_lang_String::length(java_string, value);
 632   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 633   if (!is_latin1) {
 634     jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
 635     return UNICODE::as_utf8(position, length);
 636   } else {
 637     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 638     return UNICODE::as_utf8(position, length);
 639   }
 640 }
 641 
 642 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
 643   assert(value_equals(value, java_lang_String::value(java_string)),
 644          "value must be same as java_lang_String::value(java_string)");
 645   int     length = java_lang_String::length(java_string, value);
 646   bool is_latin1 = java_lang_String::is_latin1(java_string);
 647   if (!is_latin1) {
 648     jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
 649     return UNICODE::as_utf8(position, length, buf, buflen);
 650   } else {
 651     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 652     return UNICODE::as_utf8(position, length, buf, buflen);
 653   }
 654 }
 655 
 656 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
 657   typeArrayOop value = java_lang_String::value(java_string);
 658   return as_utf8_string(java_string, value, buf, buflen);
 659 }
 660 
 661 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
 662   typeArrayOop value  = java_lang_String::value(java_string);
 663   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 664   assert(start + len <= java_lang_String::length(java_string), "just checking");
 665   if (!is_latin1) {
 666     jchar* position = value->char_at_addr(start);
 667     return UNICODE::as_utf8(position, len);
 668   } else {
 669     jbyte* position = value->byte_at_addr(start);
 670     return UNICODE::as_utf8(position, len);
 671   }
 672 }
 673 
 674 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
 675   assert(value_equals(value, java_lang_String::value(java_string)),
 676          "value must be same as java_lang_String::value(java_string)");
 677   assert(start + len <= java_lang_String::length(java_string), "just checking");
 678   bool is_latin1 = java_lang_String::is_latin1(java_string);
 679   if (!is_latin1) {
 680     jchar* position = value->char_at_addr(start);
 681     return UNICODE::as_utf8(position, len, buf, buflen);
 682   } else {
 683     jbyte* position = value->byte_at_addr(start);
 684     return UNICODE::as_utf8(position, len, buf, buflen);
 685   }
 686 }
 687 
 688 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
 689   assert(java_string->klass() == SystemDictionary::String_klass(),
 690          "must be java_string");
 691   typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
 692   int length = java_lang_String::length(java_string, value);
 693   if (length != len) {
 694     return false;
 695   }
 696   bool is_latin1 = java_lang_String::is_latin1(java_string);
 697   if (!is_latin1) {
 698     for (int i = 0; i < len; i++) {
 699       if (value->char_at(i) != chars[i]) {
 700         return false;
 701       }
 702     }
 703   } else {
 704     for (int i = 0; i < len; i++) {
 705       if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
 706         return false;
 707       }
 708     }
 709   }
 710   return true;
 711 }
 712 
 713 bool java_lang_String::equals(oop str1, oop str2) {
 714   assert(str1->klass() == SystemDictionary::String_klass(),
 715          "must be java String");
 716   assert(str2->klass() == SystemDictionary::String_klass(),
 717          "must be java String");
 718   typeArrayOop value1    = java_lang_String::value_no_keepalive(str1);
 719   bool         is_latin1 = java_lang_String::is_latin1(str1);
 720   typeArrayOop value2    = java_lang_String::value_no_keepalive(str2);
 721   bool         is_latin2 = java_lang_String::is_latin1(str2);
 722 
 723   if (is_latin1 != is_latin2) {
 724     // Strings with different coders are never equal.
 725     return false;
 726   }
 727   return value_equals(value1, value2);
 728 }
 729 
 730 void java_lang_String::print(oop java_string, outputStream* st) {
 731   assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
 732   typeArrayOop value  = java_lang_String::value_no_keepalive(java_string);
 733 
 734   if (value == NULL) {
 735     // This can happen if, e.g., printing a String
 736     // object before its initializer has been called
 737     st->print("NULL");
 738     return;
 739   }
 740 
 741   int length = java_lang_String::length(java_string, value);
 742   bool is_latin1 = java_lang_String::is_latin1(java_string);
 743 
 744   st->print("\"");
 745   for (int index = 0; index < length; index++) {
 746     st->print("%c", (!is_latin1) ?  value->char_at(index) :
 747                            ((jchar) value->byte_at(index)) & 0xff );
 748   }
 749   st->print("\"");
 750 }
 751 
 752 
 753 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
 754   assert(mirror.not_null() && fd->is_static(), "just checking");
 755   if (fd->has_initial_value()) {
 756     BasicType t = fd->field_type();
 757     switch (t) {
 758       case T_BYTE:
 759         mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
 760               break;
 761       case T_BOOLEAN:
 762         mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
 763               break;
 764       case T_CHAR:
 765         mirror()->char_field_put(fd->offset(), fd->int_initial_value());
 766               break;
 767       case T_SHORT:
 768         mirror()->short_field_put(fd->offset(), fd->int_initial_value());
 769               break;
 770       case T_INT:
 771         mirror()->int_field_put(fd->offset(), fd->int_initial_value());
 772         break;
 773       case T_FLOAT:
 774         mirror()->float_field_put(fd->offset(), fd->float_initial_value());
 775         break;
 776       case T_DOUBLE:
 777         mirror()->double_field_put(fd->offset(), fd->double_initial_value());
 778         break;
 779       case T_LONG:
 780         mirror()->long_field_put(fd->offset(), fd->long_initial_value());
 781         break;
 782       case T_OBJECT:
 783         {
 784           assert(fd->signature() == vmSymbols::string_signature(),
 785                  "just checking");
 786           if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
 787             // Archive the String field and update the pointer.
 788             oop s = mirror()->obj_field(fd->offset());
 789             oop archived_s = StringTable::create_archived_string(s, CHECK);
 790             mirror()->obj_field_put(fd->offset(), archived_s);
 791           } else {
 792             oop string = fd->string_initial_value(CHECK);
 793             mirror()->obj_field_put(fd->offset(), string);
 794           }
 795         }
 796         break;
 797       default:
 798         THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
 799                   "Illegal ConstantValue attribute in class file");
 800     }
 801   }
 802 }
 803 
 804 
 805 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
 806   assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
 807 
 808   // If the offset was read from the shared archive, it was fixed up already
 809   if (!k->is_shared()) {
 810     if (k->is_instance_klass()) {
 811       // During bootstrap, java.lang.Class wasn't loaded so static field
 812       // offsets were computed without the size added it.  Go back and
 813       // update all the static field offsets to included the size.
 814       for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
 815         if (fs.access_flags().is_static()) {
 816           int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
 817           fs.set_offset(real_offset);
 818         }
 819       }
 820     }
 821   }
 822 
 823   if (k->is_shared() && k->has_raw_archived_mirror()) {
 824     if (HeapShared::open_archive_heap_region_mapped()) {
 825       bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
 826       assert(present, "Missing archived mirror for %s", k->external_name());
 827       return;
 828     } else {
 829       k->set_java_mirror_handle(NULL);
 830       k->clear_has_raw_archived_mirror();
 831     }
 832   }
 833   create_mirror(k, Handle(), Handle(), Handle(), CHECK);
 834 }
 835 
 836 void java_lang_Class::initialize_mirror_fields(Klass* k,
 837                                                Handle mirror,
 838                                                Handle protection_domain,
 839                                                TRAPS) {
 840   // Allocate a simple java object for a lock.
 841   // This needs to be a java object because during class initialization
 842   // it can be held across a java call.
 843   typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
 844   set_init_lock(mirror(), r);
 845 
 846   // Set protection domain also
 847   set_protection_domain(mirror(), protection_domain());
 848 
 849   // Initialize static fields
 850   InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
 851 }
 852 
 853 // Set the java.lang.Module module field in the java_lang_Class mirror
 854 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
 855   if (module.is_null()) {
 856     // During startup, the module may be NULL only if java.base has not been defined yet.
 857     // Put the class on the fixup_module_list to patch later when the java.lang.Module
 858     // for java.base is known. But note that since we captured the NULL module another
 859     // thread may have completed that initialization.
 860 
 861     bool javabase_was_defined = false;
 862     {
 863       MutexLocker m1(Module_lock, THREAD);
 864       // Keep list of classes needing java.base module fixup
 865       if (!ModuleEntryTable::javabase_defined()) {
 866         assert(k->java_mirror() != NULL, "Class's mirror is null");
 867         k->class_loader_data()->inc_keep_alive();
 868         assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
 869         fixup_module_field_list()->push(k);
 870       } else {
 871         javabase_was_defined = true;
 872       }
 873     }
 874 
 875     // If java.base was already defined then patch this particular class with java.base.
 876     if (javabase_was_defined) {
 877       ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
 878       assert(javabase_entry != NULL && javabase_entry->module() != NULL,
 879              "Setting class module field, " JAVA_BASE_NAME " should be defined");
 880       Handle javabase_handle(THREAD, javabase_entry->module());
 881       set_module(mirror(), javabase_handle());
 882     }
 883   } else {
 884     assert(Universe::is_module_initialized() ||
 885            (ModuleEntryTable::javabase_defined() &&
 886             (module() == ModuleEntryTable::javabase_moduleEntry()->module())),
 887            "Incorrect java.lang.Module specification while creating mirror");
 888     set_module(mirror(), module());
 889   }
 890 }
 891 
 892 // Statically allocate fixup lists because they always get created.
 893 void java_lang_Class::allocate_fixup_lists() {
 894   GrowableArray<Klass*>* mirror_list =
 895     new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
 896   set_fixup_mirror_list(mirror_list);
 897 
 898   GrowableArray<Klass*>* module_list =
 899     new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
 900   set_fixup_module_field_list(module_list);
 901 }
 902 
 903 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
 904                                     Handle module, Handle protection_domain, TRAPS) {
 905   assert(k != NULL, "Use create_basic_type_mirror for primitive types");
 906   assert(k->java_mirror() == NULL, "should only assign mirror once");
 907 
 908   // Use this moment of initialization to cache modifier_flags also,
 909   // to support Class.getModifiers().  Instance classes recalculate
 910   // the cached flags after the class file is parsed, but before the
 911   // class is put into the system dictionary.
 912   int computed_modifiers = k->compute_modifier_flags(CHECK);
 913   k->set_modifier_flags(computed_modifiers);
 914   // Class_klass has to be loaded because it is used to allocate
 915   // the mirror.
 916   if (SystemDictionary::Class_klass_loaded()) {
 917     // Allocate mirror (java.lang.Class instance)
 918     oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
 919     Handle mirror(THREAD, mirror_oop);
 920     Handle comp_mirror;
 921 
 922     // Setup indirection from mirror->klass
 923     java_lang_Class::set_klass(mirror(), k);
 924 
 925     InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
 926     assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
 927 
 928     java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
 929 
 930     // It might also have a component mirror.  This mirror must already exist.
 931     if (k->is_array_klass()) {
 932       if (k->is_typeArray_klass()) {
 933         BasicType type = TypeArrayKlass::cast(k)->element_type();
 934         comp_mirror = Handle(THREAD, Universe::java_mirror(type));
 935       } else {
 936         assert(k->is_objArray_klass(), "Must be");
 937         Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
 938         assert(element_klass != NULL, "Must have an element klass");
 939         comp_mirror = Handle(THREAD, element_klass->java_mirror());
 940       }
 941       assert(comp_mirror() != NULL, "must have a mirror");
 942 
 943       // Two-way link between the array klass and its component mirror:
 944       // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
 945       set_component_mirror(mirror(), comp_mirror());
 946       // See below for ordering dependencies between field array_klass in component mirror
 947       // and java_mirror in this klass.
 948     } else {
 949       assert(k->is_instance_klass(), "Must be");
 950 
 951       initialize_mirror_fields(k, mirror, protection_domain, THREAD);
 952       if (HAS_PENDING_EXCEPTION) {
 953         // If any of the fields throws an exception like OOM remove the klass field
 954         // from the mirror so GC doesn't follow it after the klass has been deallocated.
 955         // This mirror looks like a primitive type, which logically it is because it
 956         // it represents no class.
 957         java_lang_Class::set_klass(mirror(), NULL);
 958         return;
 959       }
 960     }
 961 
 962     // set the classLoader field in the java_lang_Class instance
 963     assert(class_loader() == k->class_loader(), "should be same");
 964     set_class_loader(mirror(), class_loader());
 965 
 966     // Setup indirection from klass->mirror
 967     // after any exceptions can happen during allocations.
 968     k->set_java_mirror(mirror);
 969 
 970     // Set the module field in the java_lang_Class instance.  This must be done
 971     // after the mirror is set.
 972     set_mirror_module_field(k, mirror, module, THREAD);
 973 
 974     if (comp_mirror() != NULL) {
 975       // Set after k->java_mirror() is published, because compiled code running
 976       // concurrently doesn't expect a k to have a null java_mirror.
 977       release_set_array_klass(comp_mirror(), k);
 978     }
 979   } else {
 980     assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
 981     fixup_mirror_list()->push(k);
 982   }
 983 }
 984 
 985 #if INCLUDE_CDS_JAVA_HEAP
 986 // Clears mirror fields. Static final fields with initial values are reloaded
 987 // from constant pool. The object identity hash is in the object header and is
 988 // not affected.
 989 class ResetMirrorField: public FieldClosure {
 990  private:
 991   Handle _m;
 992 
 993  public:
 994   ResetMirrorField(Handle mirror) : _m(mirror) {}
 995 
 996   void do_field(fieldDescriptor* fd) {
 997     assert(DumpSharedSpaces, "dump time only");
 998     assert(_m.not_null(), "Mirror cannot be NULL");
 999 
1000     if (fd->is_static() && fd->has_initial_value()) {
1001       initialize_static_field(fd, _m, Thread::current());
1002       return;
1003     }
1004 
1005     BasicType ft = fd->field_type();
1006     switch (ft) {
1007       case T_BYTE:
1008         _m()->byte_field_put(fd->offset(), 0);
1009         break;
1010       case T_CHAR:
1011         _m()->char_field_put(fd->offset(), 0);
1012         break;
1013       case T_DOUBLE:
1014         _m()->double_field_put(fd->offset(), 0);
1015         break;
1016       case T_FLOAT:
1017         _m()->float_field_put(fd->offset(), 0);
1018         break;
1019       case T_INT:
1020         _m()->int_field_put(fd->offset(), 0);
1021         break;
1022       case T_LONG:
1023         _m()->long_field_put(fd->offset(), 0);
1024         break;
1025       case T_SHORT:
1026         _m()->short_field_put(fd->offset(), 0);
1027         break;
1028       case T_BOOLEAN:
1029         _m()->bool_field_put(fd->offset(), false);
1030         break;
1031       case T_ARRAY:
1032       case T_OBJECT: {
1033         // It might be useful to cache the String field, but
1034         // for now just clear out any reference field
1035         oop o = _m()->obj_field(fd->offset());
1036         _m()->obj_field_put(fd->offset(), NULL);
1037         break;
1038       }
1039       default:
1040         ShouldNotReachHere();
1041         break;
1042      }
1043   }
1044 };
1045 
1046 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1047   assert(HeapShared::is_heap_object_archiving_allowed(),
1048          "HeapShared::is_heap_object_archiving_allowed() must be true");
1049 
1050   for (int t = 0; t <= T_VOID; t++) {
1051     oop m = Universe::_mirrors[t];
1052     if (m != NULL) {
1053       // Update the field at _array_klass_offset to point to the relocated array klass.
1054       oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1055       assert(archived_m != NULL, "sanity");
1056       Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1057       assert(ak != NULL || t == T_VOID, "should not be NULL");
1058       if (ak != NULL) {
1059         Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak);
1060         archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1061       }
1062 
1063       // Clear the fields. Just to be safe
1064       Klass *k = m->klass();
1065       Handle archived_mirror_h(THREAD, archived_m);
1066       ResetMirrorField reset(archived_mirror_h);
1067       InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1068 
1069       log_trace(cds, heap, mirror)(
1070         "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1071         type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1072 
1073       Universe::_mirrors[t] = archived_m;
1074     }
1075   }
1076 
1077   assert(Universe::_mirrors[T_INT] != NULL &&
1078          Universe::_mirrors[T_FLOAT] != NULL &&
1079          Universe::_mirrors[T_DOUBLE] != NULL &&
1080          Universe::_mirrors[T_BYTE] != NULL &&
1081          Universe::_mirrors[T_BOOLEAN] != NULL &&
1082          Universe::_mirrors[T_CHAR] != NULL &&
1083          Universe::_mirrors[T_LONG] != NULL &&
1084          Universe::_mirrors[T_SHORT] != NULL &&
1085          Universe::_mirrors[T_VOID] != NULL, "sanity");
1086 
1087   Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1088   Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1089   Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1090   Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1091   Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1092   Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1093   Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1094   Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1095   Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1096 }
1097 
1098 //
1099 // After the mirror object is successfully archived, the archived
1100 // klass is set with _has_archived_raw_mirror flag.
1101 //
1102 // The _has_archived_raw_mirror flag is cleared at runtime when the
1103 // archived mirror is restored. If archived java heap data cannot
1104 // be used at runtime, new mirror object is created for the shared
1105 // class. The _has_archived_raw_mirror is cleared also during the process.
1106 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1107   assert(HeapShared::is_heap_object_archiving_allowed(),
1108          "HeapShared::is_heap_object_archiving_allowed() must be true");
1109 
1110   // Mirror is already archived
1111   if (k->has_raw_archived_mirror()) {
1112     assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1113     return k->archived_java_mirror_raw();
1114   }
1115 
1116   // No mirror
1117   oop mirror = k->java_mirror();
1118   if (mirror == NULL) {
1119     return NULL;
1120   }
1121 
1122   if (k->is_instance_klass()) {
1123     InstanceKlass *ik = InstanceKlass::cast(k);
1124     assert(ik->signers() == NULL, "class with signer should have been excluded");
1125 
1126     if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1127           ik->is_shared_app_class())) {
1128       // Archiving mirror for classes from non-builtin loaders is not
1129       // supported. Clear the _java_mirror within the archived class.
1130       k->set_java_mirror_handle(NULL);
1131       return NULL;
1132     }
1133   }
1134 
1135   // Now start archiving the mirror object
1136   oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1137   if (archived_mirror == NULL) {
1138     return NULL;
1139   }
1140 
1141   archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1142   if (archived_mirror == NULL) {
1143     return NULL;
1144   }
1145 
1146   k->set_archived_java_mirror_raw(archived_mirror);
1147 
1148   k->set_has_raw_archived_mirror();
1149 
1150   ResourceMark rm;
1151   log_trace(cds, heap, mirror)(
1152     "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1153     k->external_name(), p2i(mirror), p2i(archived_mirror));
1154 
1155   return archived_mirror;
1156 }
1157 
1158 // The process is based on create_mirror().
1159 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1160                                              oop archived_mirror,
1161                                              Thread *THREAD) {
1162   // Clear nonstatic fields in archived mirror. Some of the fields will be set
1163   // to archived metadata and objects below.
1164   Klass *c = archived_mirror->klass();
1165   Handle archived_mirror_h(THREAD, archived_mirror);
1166   ResetMirrorField reset(archived_mirror_h);
1167   InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1168 
1169   if (k->is_array_klass()) {
1170     oop archived_comp_mirror;
1171     if (k->is_typeArray_klass()) {
1172       // The primitive type mirrors are already archived. Get the archived mirror.
1173       oop comp_mirror = java_lang_Class::component_mirror(mirror);
1174       archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1175       assert(archived_comp_mirror != NULL, "Must be");
1176     } else {
1177       assert(k->is_objArray_klass(), "Must be");
1178       Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1179       assert(element_klass != NULL, "Must have an element klass");
1180       archived_comp_mirror = archive_mirror(element_klass, THREAD);
1181       if (archived_comp_mirror == NULL) {
1182         return NULL;
1183       }
1184     }
1185     java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1186   } else {
1187     assert(k->is_instance_klass(), "Must be");
1188 
1189     // Reset local static fields in the mirror
1190     InstanceKlass::cast(k)->do_local_static_fields(&reset);
1191 
1192     java_lang_Class:set_init_lock(archived_mirror, NULL);
1193 
1194     set_protection_domain(archived_mirror, NULL);
1195   }
1196 
1197   // clear class loader and mirror_module_field
1198   set_class_loader(archived_mirror, NULL);
1199   set_module(archived_mirror, NULL);
1200 
1201   // The archived mirror's field at _klass_offset is still pointing to the original
1202   // klass. Updated the field in the archived mirror to point to the relocated
1203   // klass in the archive.
1204   Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror));
1205   log_debug(cds, heap, mirror)(
1206     "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1207     p2i(as_Klass(mirror)), p2i(reloc_k));
1208   archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1209 
1210   // The field at _array_klass_offset is pointing to the original one dimension
1211   // higher array klass if exists. Relocate the pointer.
1212   Klass *arr = array_klass_acquire(mirror);
1213   if (arr != NULL) {
1214     Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr);
1215     log_debug(cds, heap, mirror)(
1216       "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1217       p2i(arr), p2i(reloc_arr));
1218     archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1219   }
1220   return archived_mirror;
1221 }
1222 
1223 // Returns true if the mirror is updated, false if no archived mirror
1224 // data is present. After the archived mirror object is restored, the
1225 // shared klass' _has_raw_archived_mirror flag is cleared.
1226 bool java_lang_Class::restore_archived_mirror(Klass *k,
1227                                               Handle class_loader, Handle module,
1228                                               Handle protection_domain, TRAPS) {
1229   // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1230   // see more details in SystemDictionary::resolve_well_known_classes().
1231   if (!SystemDictionary::Class_klass_loaded()) {
1232     assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1233     fixup_mirror_list()->push(k);
1234     return true;
1235   }
1236 
1237   oop m = HeapShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1238 
1239   if (m == NULL) {
1240     return false;
1241   }
1242 
1243   log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1244 
1245   // mirror is archived, restore
1246   assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1247   Handle mirror(THREAD, m);
1248 
1249   if (!k->is_array_klass()) {
1250     // - local static final fields with initial values were initialized at dump time
1251 
1252     // create the init_lock
1253     typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1254     set_init_lock(mirror(), r);
1255 
1256     if (protection_domain.not_null()) {
1257       set_protection_domain(mirror(), protection_domain());
1258     }
1259   }
1260 
1261   assert(class_loader() == k->class_loader(), "should be same");
1262   if (class_loader.not_null()) {
1263     set_class_loader(mirror(), class_loader());
1264   }
1265 
1266   k->set_java_mirror(mirror);
1267   k->clear_has_raw_archived_mirror();
1268 
1269   set_mirror_module_field(k, mirror, module, THREAD);
1270 
1271   ResourceMark rm;
1272   log_trace(cds, heap, mirror)(
1273     "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1274 
1275   return true;
1276 }
1277 #endif // INCLUDE_CDS_JAVA_HEAP
1278 
1279 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1280   assert(_module_offset != 0, "must have been computed already");
1281   java_lang_Class::set_module(k->java_mirror(), module());
1282 }
1283 
1284 int  java_lang_Class::oop_size(oop java_class) {
1285   assert(_oop_size_offset != 0, "must be set");
1286   int size = java_class->int_field(_oop_size_offset);
1287   assert(size > 0, "Oop size must be greater than zero, not %d", size);
1288   return size;
1289 }
1290 
1291 
1292 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1293   assert(_oop_size_offset != 0, "must be set");
1294   assert(size > 0, "Oop size must be greater than zero, not %d", size);
1295   *(int*)(((char*)java_class) + _oop_size_offset) = size;
1296 }
1297 
1298 int  java_lang_Class::static_oop_field_count(oop java_class) {
1299   assert(_static_oop_field_count_offset != 0, "must be set");
1300   return java_class->int_field(_static_oop_field_count_offset);
1301 }
1302 
1303 int  java_lang_Class::static_oop_field_count_raw(oop java_class) {
1304   assert(_static_oop_field_count_offset != 0, "must be set");
1305   return java_class->int_field_raw(_static_oop_field_count_offset);
1306 }
1307 
1308 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1309   assert(_static_oop_field_count_offset != 0, "must be set");
1310   java_class->int_field_put(_static_oop_field_count_offset, size);
1311 }
1312 
1313 oop java_lang_Class::protection_domain(oop java_class) {
1314   assert(_protection_domain_offset != 0, "must be set");
1315   return java_class->obj_field(_protection_domain_offset);
1316 }
1317 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1318   assert(_protection_domain_offset != 0, "must be set");
1319   java_class->obj_field_put(_protection_domain_offset, pd);
1320 }
1321 
1322 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1323   assert(_component_mirror_offset != 0, "must be set");
1324     java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1325   }
1326 oop java_lang_Class::component_mirror(oop java_class) {
1327   assert(_component_mirror_offset != 0, "must be set");
1328   return java_class->obj_field(_component_mirror_offset);
1329 }
1330 
1331 oop java_lang_Class::init_lock(oop java_class) {
1332   assert(_init_lock_offset != 0, "must be set");
1333   return java_class->obj_field(_init_lock_offset);
1334 }
1335 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1336   assert(_init_lock_offset != 0, "must be set");
1337   java_class->obj_field_put(_init_lock_offset, init_lock);
1338 }
1339 
1340 objArrayOop java_lang_Class::signers(oop java_class) {
1341   assert(_signers_offset != 0, "must be set");
1342   return (objArrayOop)java_class->obj_field(_signers_offset);
1343 }
1344 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1345   assert(_signers_offset != 0, "must be set");
1346   java_class->obj_field_put(_signers_offset, (oop)signers);
1347 }
1348 
1349 
1350 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1351   // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
1352   if (_class_loader_offset != 0) {
1353     java_class->obj_field_put(_class_loader_offset, loader);
1354   }
1355 }
1356 
1357 oop java_lang_Class::class_loader(oop java_class) {
1358   assert(_class_loader_offset != 0, "must be set");
1359   return java_class->obj_field(_class_loader_offset);
1360 }
1361 
1362 oop java_lang_Class::module(oop java_class) {
1363   assert(_module_offset != 0, "must be set");
1364   return java_class->obj_field(_module_offset);
1365 }
1366 
1367 void java_lang_Class::set_module(oop java_class, oop module) {
1368   assert(_module_offset != 0, "must be set");
1369   java_class->obj_field_put(_module_offset, module);
1370 }
1371 
1372 oop java_lang_Class::name(Handle java_class, TRAPS) {
1373   assert(_name_offset != 0, "must be set");
1374   oop o = java_class->obj_field(_name_offset);
1375   if (o == NULL) {
1376     o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1377     java_class->obj_field_put(_name_offset, o);
1378   }
1379   return o;
1380 }
1381 
1382 oop java_lang_Class::source_file(oop java_class) {
1383   assert(_source_file_offset != 0, "must be set");
1384   return java_class->obj_field(_source_file_offset);
1385 }
1386 
1387 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1388   assert(_source_file_offset != 0, "must be set");
1389   java_class->obj_field_put(_source_file_offset, source_file);
1390 }
1391 
1392 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1393   // This should be improved by adding a field at the Java level or by
1394   // introducing a new VM klass (see comment in ClassFileParser)
1395   oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
1396   if (type != T_VOID) {
1397     Klass* aklass = Universe::typeArrayKlassObj(type);
1398     assert(aklass != NULL, "correct bootstrap");
1399     release_set_array_klass(java_class, aklass);
1400   }
1401 #ifdef ASSERT
1402   InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1403   assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1404 #endif
1405   return java_class;
1406 }
1407 
1408 
1409 Klass* java_lang_Class::as_Klass(oop java_class) {
1410   //%note memory_2
1411   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1412   Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1413   assert(k == NULL || k->is_klass(), "type check");
1414   return k;
1415 }
1416 
1417 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1418   //%note memory_2
1419   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1420   Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1421   assert(k == NULL || k->is_klass(), "type check");
1422   return k;
1423 }
1424 
1425 
1426 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1427   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1428   java_class->metadata_field_put(_klass_offset, klass);
1429 }
1430 
1431 
1432 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1433   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1434   Symbol* name = NULL;
1435   bool is_instance = false;
1436   if (is_primitive(java_class)) {
1437     name = vmSymbols::type_signature(primitive_type(java_class));
1438   } else {
1439     Klass* k = as_Klass(java_class);
1440     is_instance = k->is_instance_klass();
1441     name = k->name();
1442   }
1443   if (name == NULL) {
1444     st->print("<null>");
1445     return;
1446   }
1447   if (is_instance)  st->print("L");
1448   st->write((char*) name->base(), (int) name->utf8_length());
1449   if (is_instance)  st->print(";");
1450 }
1451 
1452 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1453   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1454   Symbol* name;
1455   if (is_primitive(java_class)) {
1456     name = vmSymbols::type_signature(primitive_type(java_class));
1457     // Because this can create a new symbol, the caller has to decrement
1458     // the refcount, so make adjustment here and below for symbols returned
1459     // that are not created or incremented due to a successful lookup.
1460     name->increment_refcount();
1461   } else {
1462     Klass* k = as_Klass(java_class);
1463     if (!k->is_instance_klass()) {
1464       name = k->name();
1465       name->increment_refcount();
1466     } else {
1467       ResourceMark rm;
1468       const char* sigstr = k->signature_name();
1469       int         siglen = (int) strlen(sigstr);
1470       if (!intern_if_not_found) {
1471         name = SymbolTable::probe(sigstr, siglen);
1472       } else {
1473         name = SymbolTable::new_symbol(sigstr, siglen);
1474       }
1475     }
1476   }
1477   return name;
1478 }
1479 
1480 // Returns the Java name for this Java mirror (Resource allocated)
1481 // See Klass::external_name().
1482 // For primitive type Java mirrors, its type name is returned.
1483 const char* java_lang_Class::as_external_name(oop java_class) {
1484   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1485   const char* name = NULL;
1486   if (is_primitive(java_class)) {
1487     name = type2name(primitive_type(java_class));
1488   } else {
1489     name = as_Klass(java_class)->external_name();
1490   }
1491   if (name == NULL) {
1492     name = "<null>";
1493   }
1494   return name;
1495 }
1496 
1497 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1498   Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1499   assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1500   return k;
1501 }
1502 
1503 
1504 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1505   assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1506   java_class->release_metadata_field_put(_array_klass_offset, klass);
1507 }
1508 
1509 
1510 BasicType java_lang_Class::primitive_type(oop java_class) {
1511   assert(java_lang_Class::is_primitive(java_class), "just checking");
1512   Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1513   BasicType type = T_VOID;
1514   if (ak != NULL) {
1515     // Note: create_basic_type_mirror above initializes ak to a non-null value.
1516     type = ArrayKlass::cast(ak)->element_type();
1517   } else {
1518     assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1519   }
1520   assert(Universe::java_mirror(type) == java_class, "must be consistent");
1521   return type;
1522 }
1523 
1524 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1525   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1526   if (is_primitive(java_class)) {
1527     if (reference_klass != NULL)
1528       (*reference_klass) = NULL;
1529     return primitive_type(java_class);
1530   } else {
1531     if (reference_klass != NULL)
1532       (*reference_klass) = as_Klass(java_class);
1533     return T_OBJECT;
1534   }
1535 }
1536 
1537 
1538 oop java_lang_Class::primitive_mirror(BasicType t) {
1539   oop mirror = Universe::java_mirror(t);
1540   assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1541   assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1542   return mirror;
1543 }
1544 
1545 bool java_lang_Class::offsets_computed = false;
1546 int  java_lang_Class::classRedefinedCount_offset = -1;
1547 
1548 #define CLASS_FIELDS_DO(macro) \
1549   macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature,         false); \
1550   macro(_class_loader_offset,       k, "classLoader",         classloader_signature, false); \
1551   macro(_component_mirror_offset,   k, "componentType",       class_signature,       false); \
1552   macro(_module_offset,             k, "module",              module_signature,      false); \
1553   macro(_name_offset,               k, "name",                string_signature,      false); \
1554 
1555 void java_lang_Class::compute_offsets() {
1556   if (offsets_computed) {
1557     return;
1558   }
1559 
1560   offsets_computed = true;
1561 
1562   InstanceKlass* k = SystemDictionary::Class_klass();
1563   CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1564 
1565   // Init lock is a C union with component_mirror.  Only instanceKlass mirrors have
1566   // init_lock and only ArrayKlass mirrors have component_mirror.  Since both are oops
1567   // GC treats them the same.
1568   _init_lock_offset = _component_mirror_offset;
1569 
1570   CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1571 }
1572 
1573 #if INCLUDE_CDS
1574 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1575   f->do_bool(&offsets_computed);
1576   f->do_u4((u4*)&_init_lock_offset);
1577 
1578   CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1579 
1580   CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1581 }
1582 #endif
1583 
1584 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1585   if (classRedefinedCount_offset == -1) {
1586     // If we don't have an offset for it then just return -1 as a marker.
1587     return -1;
1588   }
1589 
1590   return the_class_mirror->int_field(classRedefinedCount_offset);
1591 }
1592 
1593 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1594   if (classRedefinedCount_offset == -1) {
1595     // If we don't have an offset for it then nothing to set.
1596     return;
1597   }
1598 
1599   the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1600 }
1601 
1602 
1603 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1604 //       platform thread structure, and a eetop offset which was used for thread
1605 //       local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1606 //       merged, so in the HotSpot VM we just use the eetop field for the thread
1607 //       instead of the privateInfo_offset.
1608 //
1609 // Note: The stackSize field is only present starting in 1.4.
1610 
1611 int java_lang_Thread::_name_offset = 0;
1612 int java_lang_Thread::_group_offset = 0;
1613 int java_lang_Thread::_contextClassLoader_offset = 0;
1614 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1615 int java_lang_Thread::_priority_offset = 0;
1616 int java_lang_Thread::_eetop_offset = 0;
1617 int java_lang_Thread::_daemon_offset = 0;
1618 int java_lang_Thread::_stillborn_offset = 0;
1619 int java_lang_Thread::_stackSize_offset = 0;
1620 int java_lang_Thread::_tid_offset = 0;
1621 int java_lang_Thread::_thread_status_offset = 0;
1622 int java_lang_Thread::_park_blocker_offset = 0;
1623 
1624 #define THREAD_FIELDS_DO(macro) \
1625   macro(_name_offset,          k, vmSymbols::name_name(), string_signature, false); \
1626   macro(_group_offset,         k, vmSymbols::group_name(), threadgroup_signature, false); \
1627   macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1628   macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1629   macro(_priority_offset,      k, vmSymbols::priority_name(), int_signature, false); \
1630   macro(_daemon_offset,        k, vmSymbols::daemon_name(), bool_signature, false); \
1631   macro(_eetop_offset,         k, "eetop", long_signature, false); \
1632   macro(_stillborn_offset,     k, "stillborn", bool_signature, false); \
1633   macro(_stackSize_offset,     k, "stackSize", long_signature, false); \
1634   macro(_tid_offset,           k, "tid", long_signature, false); \
1635   macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1636   macro(_park_blocker_offset,  k, "parkBlocker", object_signature, false)
1637 
1638 void java_lang_Thread::compute_offsets() {
1639   assert(_group_offset == 0, "offsets should be initialized only once");
1640 
1641   InstanceKlass* k = SystemDictionary::Thread_klass();
1642   THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1643 }
1644 
1645 #if INCLUDE_CDS
1646 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1647   THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1648 }
1649 #endif
1650 
1651 JavaThread* java_lang_Thread::thread(oop java_thread) {
1652   return (JavaThread*)java_thread->address_field(_eetop_offset);
1653 }
1654 
1655 
1656 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1657   java_thread->address_field_put(_eetop_offset, (address)thread);
1658 }
1659 
1660 
1661 oop java_lang_Thread::name(oop java_thread) {
1662   return java_thread->obj_field(_name_offset);
1663 }
1664 
1665 
1666 void java_lang_Thread::set_name(oop java_thread, oop name) {
1667   java_thread->obj_field_put(_name_offset, name);
1668 }
1669 
1670 
1671 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1672   return (ThreadPriority)java_thread->int_field(_priority_offset);
1673 }
1674 
1675 
1676 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1677   java_thread->int_field_put(_priority_offset, priority);
1678 }
1679 
1680 
1681 oop java_lang_Thread::threadGroup(oop java_thread) {
1682   return java_thread->obj_field(_group_offset);
1683 }
1684 
1685 
1686 bool java_lang_Thread::is_stillborn(oop java_thread) {
1687   return java_thread->bool_field(_stillborn_offset) != 0;
1688 }
1689 
1690 
1691 // We never have reason to turn the stillborn bit off
1692 void java_lang_Thread::set_stillborn(oop java_thread) {
1693   java_thread->bool_field_put(_stillborn_offset, true);
1694 }
1695 
1696 
1697 bool java_lang_Thread::is_alive(oop java_thread) {
1698   JavaThread* thr = java_lang_Thread::thread(java_thread);
1699   return (thr != NULL);
1700 }
1701 
1702 
1703 bool java_lang_Thread::is_daemon(oop java_thread) {
1704   return java_thread->bool_field(_daemon_offset) != 0;
1705 }
1706 
1707 
1708 void java_lang_Thread::set_daemon(oop java_thread) {
1709   java_thread->bool_field_put(_daemon_offset, true);
1710 }
1711 
1712 oop java_lang_Thread::context_class_loader(oop java_thread) {
1713   return java_thread->obj_field(_contextClassLoader_offset);
1714 }
1715 
1716 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1717   return java_thread->obj_field(_inheritedAccessControlContext_offset);
1718 }
1719 
1720 
1721 jlong java_lang_Thread::stackSize(oop java_thread) {
1722   return java_thread->long_field(_stackSize_offset);
1723 }
1724 
1725 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1726 void java_lang_Thread::set_thread_status(oop java_thread,
1727                                          java_lang_Thread::ThreadStatus status) {
1728   java_thread->int_field_put(_thread_status_offset, status);
1729 }
1730 
1731 // Read thread status value from threadStatus field in java.lang.Thread java class.
1732 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1733   // Make sure the caller is operating on behalf of the VM or is
1734   // running VM code (state == _thread_in_vm).
1735   assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1736          JavaThread::current()->thread_state() == _thread_in_vm,
1737          "Java Thread is not running in vm");
1738   return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1739 }
1740 
1741 
1742 jlong java_lang_Thread::thread_id(oop java_thread) {
1743   return java_thread->long_field(_tid_offset);
1744 }
1745 
1746 oop java_lang_Thread::park_blocker(oop java_thread) {
1747   return java_thread->obj_field(_park_blocker_offset);
1748 }
1749 
1750 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1751   ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1752   switch (status) {
1753     case NEW                      : return "NEW";
1754     case RUNNABLE                 : return "RUNNABLE";
1755     case SLEEPING                 : return "TIMED_WAITING (sleeping)";
1756     case IN_OBJECT_WAIT           : return "WAITING (on object monitor)";
1757     case IN_OBJECT_WAIT_TIMED     : return "TIMED_WAITING (on object monitor)";
1758     case PARKED                   : return "WAITING (parking)";
1759     case PARKED_TIMED             : return "TIMED_WAITING (parking)";
1760     case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1761     case TERMINATED               : return "TERMINATED";
1762     default                       : return "UNKNOWN";
1763   };
1764 }
1765 int java_lang_ThreadGroup::_parent_offset = 0;
1766 int java_lang_ThreadGroup::_name_offset = 0;
1767 int java_lang_ThreadGroup::_threads_offset = 0;
1768 int java_lang_ThreadGroup::_groups_offset = 0;
1769 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1770 int java_lang_ThreadGroup::_destroyed_offset = 0;
1771 int java_lang_ThreadGroup::_daemon_offset = 0;
1772 int java_lang_ThreadGroup::_nthreads_offset = 0;
1773 int java_lang_ThreadGroup::_ngroups_offset = 0;
1774 
1775 oop  java_lang_ThreadGroup::parent(oop java_thread_group) {
1776   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1777   return java_thread_group->obj_field(_parent_offset);
1778 }
1779 
1780 // ("name as oop" accessor is not necessary)
1781 
1782 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1783   oop name = java_thread_group->obj_field(_name_offset);
1784   // ThreadGroup.name can be null
1785   if (name != NULL) {
1786     return java_lang_String::as_utf8_string(name);
1787   }
1788   return NULL;
1789 }
1790 
1791 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1792   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1793   return java_thread_group->int_field(_nthreads_offset);
1794 }
1795 
1796 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1797   oop threads = java_thread_group->obj_field(_threads_offset);
1798   assert(threads != NULL, "threadgroups should have threads");
1799   assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1800   return objArrayOop(threads);
1801 }
1802 
1803 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1804   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1805   return java_thread_group->int_field(_ngroups_offset);
1806 }
1807 
1808 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1809   oop groups = java_thread_group->obj_field(_groups_offset);
1810   assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1811   return objArrayOop(groups);
1812 }
1813 
1814 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1815   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1816   return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1817 }
1818 
1819 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1820   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1821   return java_thread_group->bool_field(_destroyed_offset) != 0;
1822 }
1823 
1824 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1825   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1826   return java_thread_group->bool_field(_daemon_offset) != 0;
1827 }
1828 
1829 #define THREADGROUP_FIELDS_DO(macro) \
1830   macro(_parent_offset,      k, vmSymbols::parent_name(),      threadgroup_signature,       false); \
1831   macro(_name_offset,        k, vmSymbols::name_name(),        string_signature,            false); \
1832   macro(_threads_offset,     k, vmSymbols::threads_name(),     thread_array_signature,      false); \
1833   macro(_groups_offset,      k, vmSymbols::groups_name(),      threadgroup_array_signature, false); \
1834   macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature,               false); \
1835   macro(_destroyed_offset,   k, vmSymbols::destroyed_name(),   bool_signature,              false); \
1836   macro(_daemon_offset,      k, vmSymbols::daemon_name(),      bool_signature,              false); \
1837   macro(_nthreads_offset,    k, vmSymbols::nthreads_name(),    int_signature,               false); \
1838   macro(_ngroups_offset,     k, vmSymbols::ngroups_name(),     int_signature,               false)
1839 
1840 void java_lang_ThreadGroup::compute_offsets() {
1841   assert(_parent_offset == 0, "offsets should be initialized only once");
1842 
1843   InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1844   THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1845 }
1846 
1847 #if INCLUDE_CDS
1848 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1849   THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1850 }
1851 #endif
1852 
1853 #define THROWABLE_FIELDS_DO(macro) \
1854   macro(backtrace_offset,     k, "backtrace",     object_signature,                  false); \
1855   macro(detailMessage_offset, k, "detailMessage", string_signature,                  false); \
1856   macro(stackTrace_offset,    k, "stackTrace",    java_lang_StackTraceElement_array, false); \
1857   macro(depth_offset,         k, "depth",         int_signature,                     false); \
1858   macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1859 
1860 void java_lang_Throwable::compute_offsets() {
1861   InstanceKlass* k = SystemDictionary::Throwable_klass();
1862   THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1863 }
1864 
1865 #if INCLUDE_CDS
1866 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1867   THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1868 }
1869 #endif
1870 
1871 oop java_lang_Throwable::unassigned_stacktrace() {
1872   InstanceKlass* ik = SystemDictionary::Throwable_klass();
1873   oop base = ik->static_field_base_raw();
1874   return base->obj_field(static_unassigned_stacktrace_offset);
1875 }
1876 
1877 oop java_lang_Throwable::backtrace(oop throwable) {
1878   return throwable->obj_field_acquire(backtrace_offset);
1879 }
1880 
1881 
1882 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1883   throwable->release_obj_field_put(backtrace_offset, value);
1884 }
1885 
1886 int java_lang_Throwable::depth(oop throwable) {
1887   return throwable->int_field(depth_offset);
1888 }
1889 
1890 void java_lang_Throwable::set_depth(oop throwable, int value) {
1891   throwable->int_field_put(depth_offset, value);
1892 }
1893 
1894 oop java_lang_Throwable::message(oop throwable) {
1895   return throwable->obj_field(detailMessage_offset);
1896 }
1897 
1898 
1899 // Return Symbol for detailed_message or NULL
1900 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1901   PRESERVE_EXCEPTION_MARK;  // Keep original exception
1902   oop detailed_message = java_lang_Throwable::message(throwable);
1903   if (detailed_message != NULL) {
1904     return java_lang_String::as_symbol(detailed_message);
1905   }
1906   return NULL;
1907 }
1908 
1909 void java_lang_Throwable::set_message(oop throwable, oop value) {
1910   throwable->obj_field_put(detailMessage_offset, value);
1911 }
1912 
1913 
1914 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1915   throwable->obj_field_put(stackTrace_offset, st_element_array);
1916 }
1917 
1918 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1919   set_stacktrace(throwable, NULL);
1920 }
1921 
1922 
1923 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1924   ResourceMark rm;
1925   Klass* k = throwable->klass();
1926   assert(k != NULL, "just checking");
1927   st->print("%s", k->external_name());
1928   oop msg = message(throwable);
1929   if (msg != NULL) {
1930     st->print(": %s", java_lang_String::as_utf8_string(msg));
1931   }
1932 }
1933 
1934 // After this many redefines, the stack trace is unreliable.
1935 const int MAX_VERSION = USHRT_MAX;
1936 
1937 static inline bool version_matches(Method* method, int version) {
1938   assert(version < MAX_VERSION, "version is too big");
1939   return method != NULL && (method->constants()->version() == version);
1940 }
1941 
1942 // This class provides a simple wrapper over the internal structure of
1943 // exception backtrace to insulate users of the backtrace from needing
1944 // to know what it looks like.
1945 class BacktraceBuilder: public StackObj {
1946  friend class BacktraceIterator;
1947  private:
1948   Handle          _backtrace;
1949   objArrayOop     _head;
1950   typeArrayOop    _methods;
1951   typeArrayOop    _bcis;
1952   objArrayOop     _mirrors;
1953   typeArrayOop    _names; // Needed to insulate method name against redefinition.
1954   // This is set to a java.lang.Boolean(true) if the top frame
1955   // of the backtrace is omitted because it shall be hidden.
1956   // Else it is null.
1957   oop             _has_hidden_top_frame;
1958   int             _index;
1959   NoSafepointVerifier _nsv;
1960 
1961   enum {
1962     trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1963     trace_bcis_offset    = java_lang_Throwable::trace_bcis_offset,
1964     trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1965     trace_names_offset   = java_lang_Throwable::trace_names_offset,
1966     trace_next_offset    = java_lang_Throwable::trace_next_offset,
1967     trace_hidden_offset  = java_lang_Throwable::trace_hidden_offset,
1968     trace_size           = java_lang_Throwable::trace_size,
1969     trace_chunk_size     = java_lang_Throwable::trace_chunk_size
1970   };
1971 
1972   // get info out of chunks
1973   static typeArrayOop get_methods(objArrayHandle chunk) {
1974     typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1975     assert(methods != NULL, "method array should be initialized in backtrace");
1976     return methods;
1977   }
1978   static typeArrayOop get_bcis(objArrayHandle chunk) {
1979     typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1980     assert(bcis != NULL, "bci array should be initialized in backtrace");
1981     return bcis;
1982   }
1983   static objArrayOop get_mirrors(objArrayHandle chunk) {
1984     objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1985     assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1986     return mirrors;
1987   }
1988   static typeArrayOop get_names(objArrayHandle chunk) {
1989     typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
1990     assert(names != NULL, "names array should be initialized in backtrace");
1991     return names;
1992   }
1993   static oop get_has_hidden_top_frame(objArrayHandle chunk) {
1994     oop hidden = chunk->obj_at(trace_hidden_offset);
1995     return hidden;
1996   }
1997 
1998  public:
1999 
2000   // constructor for new backtrace
2001   BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(NULL) {
2002     expand(CHECK);
2003     _backtrace = Handle(THREAD, _head);
2004     _index = 0;
2005   }
2006 
2007   BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2008     _methods = get_methods(backtrace);
2009     _bcis = get_bcis(backtrace);
2010     _mirrors = get_mirrors(backtrace);
2011     _names = get_names(backtrace);
2012     _has_hidden_top_frame = get_has_hidden_top_frame(backtrace);
2013     assert(_methods->length() == _bcis->length() &&
2014            _methods->length() == _mirrors->length() &&
2015            _mirrors->length() == _names->length(),
2016            "method and source information arrays should match");
2017 
2018     // head is the preallocated backtrace
2019     _head = backtrace();
2020     _backtrace = Handle(thread, _head);
2021     _index = 0;
2022   }
2023 
2024   void expand(TRAPS) {
2025     objArrayHandle old_head(THREAD, _head);
2026     PauseNoSafepointVerifier pnsv(&_nsv);
2027 
2028     objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2029     objArrayHandle new_head(THREAD, head);
2030 
2031     typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2032     typeArrayHandle new_methods(THREAD, methods);
2033 
2034     typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2035     typeArrayHandle new_bcis(THREAD, bcis);
2036 
2037     objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2038     objArrayHandle new_mirrors(THREAD, mirrors);
2039 
2040     typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2041     typeArrayHandle new_names(THREAD, names);
2042 
2043     if (!old_head.is_null()) {
2044       old_head->obj_at_put(trace_next_offset, new_head());
2045     }
2046     new_head->obj_at_put(trace_methods_offset, new_methods());
2047     new_head->obj_at_put(trace_bcis_offset, new_bcis());
2048     new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2049     new_head->obj_at_put(trace_names_offset, new_names());
2050     new_head->obj_at_put(trace_hidden_offset, NULL);
2051 
2052     _head    = new_head();
2053     _methods = new_methods();
2054     _bcis = new_bcis();
2055     _mirrors = new_mirrors();
2056     _names  = new_names();
2057     _index = 0;
2058   }
2059 
2060   oop backtrace() {
2061     return _backtrace();
2062   }
2063 
2064   inline void push(Method* method, int bci, TRAPS) {
2065     // Smear the -1 bci to 0 since the array only holds unsigned
2066     // shorts.  The later line number lookup would just smear the -1
2067     // to a 0 even if it could be recorded.
2068     if (bci == SynchronizationEntryBCI) bci = 0;
2069 
2070     if (_index >= trace_chunk_size) {
2071       methodHandle mhandle(THREAD, method);
2072       expand(CHECK);
2073       method = mhandle();
2074     }
2075 
2076     _methods->ushort_at_put(_index, method->orig_method_idnum());
2077     _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2078 
2079     // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2080     // klass owning the symbols alive so their refcounts aren't decremented.
2081     Symbol* name = method->name();
2082     _names->symbol_at_put(_index, name);
2083 
2084     // We need to save the mirrors in the backtrace to keep the class
2085     // from being unloaded while we still have this stack trace.
2086     assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2087     _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2088     _index++;
2089   }
2090 
2091   void set_has_hidden_top_frame(TRAPS) {
2092     if (_has_hidden_top_frame == NULL) {
2093       jvalue prim;
2094       prim.z = 1;
2095       PauseNoSafepointVerifier pnsv(&_nsv);
2096       _has_hidden_top_frame = java_lang_boxing_object::create(T_BOOLEAN, &prim, CHECK);
2097       _head->obj_at_put(trace_hidden_offset, _has_hidden_top_frame);
2098     }
2099   }
2100 
2101 };
2102 
2103 struct BacktraceElement : public StackObj {
2104   int _method_id;
2105   int _bci;
2106   int _version;
2107   Symbol* _name;
2108   Handle _mirror;
2109   BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2110                    _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2111 };
2112 
2113 class BacktraceIterator : public StackObj {
2114   int _index;
2115   objArrayHandle  _result;
2116   objArrayHandle  _mirrors;
2117   typeArrayHandle _methods;
2118   typeArrayHandle _bcis;
2119   typeArrayHandle _names;
2120 
2121   void init(objArrayHandle result, Thread* thread) {
2122     // Get method id, bci, version and mirror from chunk
2123     _result = result;
2124     if (_result.not_null()) {
2125       _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2126       _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2127       _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2128       _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2129       _index = 0;
2130     }
2131   }
2132  public:
2133   BacktraceIterator(objArrayHandle result, Thread* thread) {
2134     init(result, thread);
2135     assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2136   }
2137 
2138   BacktraceElement next(Thread* thread) {
2139     BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2140                         _methods->ushort_at(_index),
2141                         Backtrace::version_at(_bcis->int_at(_index)),
2142                         Backtrace::bci_at(_bcis->int_at(_index)),
2143                         _names->symbol_at(_index));
2144     _index++;
2145 
2146     if (_index >= java_lang_Throwable::trace_chunk_size) {
2147       int next_offset = java_lang_Throwable::trace_next_offset;
2148       // Get next chunk
2149       objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2150       init(result, thread);
2151     }
2152     return e;
2153   }
2154 
2155   bool repeat() {
2156     return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2157   }
2158 };
2159 
2160 
2161 // Print stack trace element to resource allocated buffer
2162 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2163                                           int version, int bci, Symbol* name) {
2164   ResourceMark rm;
2165 
2166   // Get strings and string lengths
2167   InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2168   const char* klass_name  = holder->external_name();
2169   int buf_len = (int)strlen(klass_name);
2170 
2171   char* method_name = name->as_C_string();
2172   buf_len += (int)strlen(method_name);
2173 
2174   char* source_file_name = NULL;
2175   Symbol* source = Backtrace::get_source_file_name(holder, version);
2176   if (source != NULL) {
2177     source_file_name = source->as_C_string();
2178     buf_len += (int)strlen(source_file_name);
2179   }
2180 
2181   char *module_name = NULL, *module_version = NULL;
2182   ModuleEntry* module = holder->module();
2183   if (module->is_named()) {
2184     module_name = module->name()->as_C_string();
2185     buf_len += (int)strlen(module_name);
2186     if (module->version() != NULL) {
2187       module_version = module->version()->as_C_string();
2188       buf_len += (int)strlen(module_version);
2189     }
2190   }
2191 
2192   // Allocate temporary buffer with extra space for formatting and line number
2193   char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2194 
2195   // Print stack trace line in buffer
2196   sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2197 
2198   // Print module information
2199   if (module_name != NULL) {
2200     if (module_version != NULL) {
2201       sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2202     } else {
2203       sprintf(buf + (int)strlen(buf), "%s/", module_name);
2204     }
2205   }
2206 
2207   // The method can be NULL if the requested class version is gone
2208   Method* method = holder->method_with_orig_idnum(method_id, version);
2209   if (!version_matches(method, version)) {
2210     strcat(buf, "Redefined)");
2211   } else {
2212     int line_number = Backtrace::get_line_number(method, bci);
2213     if (line_number == -2) {
2214       strcat(buf, "Native Method)");
2215     } else {
2216       if (source_file_name != NULL && (line_number != -1)) {
2217         // Sourcename and linenumber
2218         sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2219       } else if (source_file_name != NULL) {
2220         // Just sourcename
2221         sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2222       } else {
2223         // Neither sourcename nor linenumber
2224         sprintf(buf + (int)strlen(buf), "Unknown Source)");
2225       }
2226       CompiledMethod* nm = method->code();
2227       if (WizardMode && nm != NULL) {
2228         sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2229       }
2230     }
2231   }
2232 
2233   st->print_cr("%s", buf);
2234 }
2235 
2236 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
2237   Handle mirror (Thread::current(),  method->method_holder()->java_mirror());
2238   int method_id = method->orig_method_idnum();
2239   int version = method->constants()->version();
2240   print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2241 }
2242 
2243 /**
2244  * Print the throwable message and its stack trace plus all causes by walking the
2245  * cause chain.  The output looks the same as of Throwable.printStackTrace().
2246  */
2247 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2248   // First, print the message.
2249   print(throwable(), st);
2250   st->cr();
2251 
2252   // Now print the stack trace.
2253   Thread* THREAD = Thread::current();
2254   while (throwable.not_null()) {
2255     objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2256     if (result.is_null()) {
2257       st->print_raw_cr("\t<<no stack trace available>>");
2258       return;
2259     }
2260     BacktraceIterator iter(result, THREAD);
2261 
2262     while (iter.repeat()) {
2263       BacktraceElement bte = iter.next(THREAD);
2264       print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2265     }
2266     {
2267       // Call getCause() which doesn't necessarily return the _cause field.
2268       EXCEPTION_MARK;
2269       JavaValue cause(T_OBJECT);
2270       JavaCalls::call_virtual(&cause,
2271                               throwable,
2272                               throwable->klass(),
2273                               vmSymbols::getCause_name(),
2274                               vmSymbols::void_throwable_signature(),
2275                               THREAD);
2276       // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2277       if (HAS_PENDING_EXCEPTION) {
2278         CLEAR_PENDING_EXCEPTION;
2279         throwable = Handle();
2280       } else {
2281         throwable = Handle(THREAD, (oop) cause.get_jobject());
2282         if (throwable.not_null()) {
2283           st->print("Caused by: ");
2284           print(throwable(), st);
2285           st->cr();
2286         }
2287       }
2288     }
2289   }
2290 }
2291 
2292 /**
2293  * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2294  */
2295 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2296   assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2297   JavaValue result(T_VOID);
2298   JavaCalls::call_virtual(&result,
2299                           throwable,
2300                           SystemDictionary::Throwable_klass(),
2301                           vmSymbols::printStackTrace_name(),
2302                           vmSymbols::void_method_signature(),
2303                           THREAD);
2304 }
2305 
2306 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2307   if (!StackTraceInThrowable) return;
2308   ResourceMark rm(THREAD);
2309 
2310   // Start out by clearing the backtrace for this object, in case the VM
2311   // runs out of memory while allocating the stack trace
2312   set_backtrace(throwable(), NULL);
2313   // Clear lazily constructed Java level stacktrace if refilling occurs
2314   // This is unnecessary in 1.7+ but harmless
2315   clear_stacktrace(throwable());
2316 
2317   int max_depth = MaxJavaStackTraceDepth;
2318   JavaThread* thread = (JavaThread*)THREAD;
2319 
2320   BacktraceBuilder bt(CHECK);
2321 
2322   // If there is no Java frame just return the method that was being called
2323   // with bci 0
2324   if (!thread->has_last_Java_frame()) {
2325     if (max_depth >= 1 && method() != NULL) {
2326       bt.push(method(), 0, CHECK);
2327       log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2328       set_depth(throwable(), 1);
2329       set_backtrace(throwable(), bt.backtrace());
2330     }
2331     return;
2332   }
2333 
2334   // Instead of using vframe directly, this version of fill_in_stack_trace
2335   // basically handles everything by hand. This significantly improved the
2336   // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2337   // See bug 6333838 for  more details.
2338   // The "ASSERT" here is to verify this method generates the exactly same stack
2339   // trace as utilizing vframe.
2340 #ifdef ASSERT
2341   vframeStream st(thread);
2342   methodHandle st_method(THREAD, st.method());
2343 #endif
2344   int total_count = 0;
2345   RegisterMap map(thread, false);
2346   int decode_offset = 0;
2347   CompiledMethod* nm = NULL;
2348   bool skip_fillInStackTrace_check = false;
2349   bool skip_throwableInit_check = false;
2350   bool skip_hidden = !ShowHiddenFrames;
2351 
2352   for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2353     Method* method = NULL;
2354     int bci = 0;
2355 
2356     // Compiled java method case.
2357     if (decode_offset != 0) {
2358       DebugInfoReadStream stream(nm, decode_offset);
2359       decode_offset = stream.read_int();
2360       method = (Method*)nm->metadata_at(stream.read_int());
2361       bci = stream.read_bci();
2362     } else {
2363       if (fr.is_first_frame()) break;
2364       address pc = fr.pc();
2365       if (fr.is_interpreted_frame()) {
2366         address bcp = fr.interpreter_frame_bcp();
2367         method = fr.interpreter_frame_method();
2368         bci =  method->bci_from(bcp);
2369         fr = fr.sender(&map);
2370       } else {
2371         CodeBlob* cb = fr.cb();
2372         // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2373         // but non nmethod
2374         fr = fr.sender(&map);
2375         if (cb == NULL || !cb->is_compiled()) {
2376           continue;
2377         }
2378         nm = cb->as_compiled_method();
2379         if (nm->method()->is_native()) {
2380           method = nm->method();
2381           bci = 0;
2382         } else {
2383           PcDesc* pd = nm->pc_desc_at(pc);
2384           decode_offset = pd->scope_decode_offset();
2385           // if decode_offset is not equal to 0, it will execute the
2386           // "compiled java method case" at the beginning of the loop.
2387           continue;
2388         }
2389       }
2390     }
2391 #ifdef ASSERT
2392     assert(st_method() == method && st.bci() == bci,
2393            "Wrong stack trace");
2394     st.next();
2395     // vframeStream::method isn't GC-safe so store off a copy
2396     // of the Method* in case we GC.
2397     if (!st.at_end()) {
2398       st_method = st.method();
2399     }
2400 #endif
2401 
2402     // the format of the stacktrace will be:
2403     // - 1 or more fillInStackTrace frames for the exception class (skipped)
2404     // - 0 or more <init> methods for the exception class (skipped)
2405     // - rest of the stack
2406 
2407     if (!skip_fillInStackTrace_check) {
2408       if (method->name() == vmSymbols::fillInStackTrace_name() &&
2409           throwable->is_a(method->method_holder())) {
2410         continue;
2411       }
2412       else {
2413         skip_fillInStackTrace_check = true; // gone past them all
2414       }
2415     }
2416     if (!skip_throwableInit_check) {
2417       assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2418 
2419       // skip <init> methods of the exception class and superclasses
2420       // This is simlar to classic VM.
2421       if (method->name() == vmSymbols::object_initializer_name() &&
2422           throwable->is_a(method->method_holder())) {
2423         continue;
2424       } else {
2425         // there are none or we've seen them all - either way stop checking
2426         skip_throwableInit_check = true;
2427       }
2428     }
2429     if (method->is_hidden()) {
2430       if (skip_hidden) {
2431         if (total_count == 0) {
2432           // The top frame will be hidden from the stack trace.
2433           bt.set_has_hidden_top_frame(CHECK);
2434         }
2435         continue;
2436       }
2437     }
2438     bt.push(method, bci, CHECK);
2439     total_count++;
2440   }
2441 
2442   log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2443 
2444   // Put completed stack trace into throwable object
2445   set_backtrace(throwable(), bt.backtrace());
2446   set_depth(throwable(), total_count);
2447 }
2448 
2449 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2450   // No-op if stack trace is disabled
2451   if (!StackTraceInThrowable) {
2452     return;
2453   }
2454 
2455   // Disable stack traces for some preallocated out of memory errors
2456   if (!Universe::should_fill_in_stack_trace(throwable)) {
2457     return;
2458   }
2459 
2460   PRESERVE_EXCEPTION_MARK;
2461 
2462   JavaThread* thread = JavaThread::active();
2463   fill_in_stack_trace(throwable, method, thread);
2464   // ignore exceptions thrown during stack trace filling
2465   CLEAR_PENDING_EXCEPTION;
2466 }
2467 
2468 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2469   // Allocate stack trace - backtrace is created but not filled in
2470 
2471   // No-op if stack trace is disabled
2472   if (!StackTraceInThrowable) return;
2473   BacktraceBuilder bt(CHECK);   // creates a backtrace
2474   set_backtrace(throwable(), bt.backtrace());
2475 }
2476 
2477 
2478 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2479   // Fill in stack trace into preallocated backtrace (no GC)
2480 
2481   // No-op if stack trace is disabled
2482   if (!StackTraceInThrowable) return;
2483 
2484   assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2485 
2486   JavaThread* THREAD = JavaThread::current();
2487 
2488   objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2489   assert(backtrace.not_null(), "backtrace should have been preallocated");
2490 
2491   ResourceMark rm(THREAD);
2492   vframeStream st(THREAD);
2493 
2494   BacktraceBuilder bt(THREAD, backtrace);
2495 
2496   // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2497   // methods as preallocated errors aren't created by "java" code.
2498 
2499   // fill in as much stack trace as possible
2500   int chunk_count = 0;
2501   for (;!st.at_end(); st.next()) {
2502     bt.push(st.method(), st.bci(), CHECK);
2503     chunk_count++;
2504 
2505     // Bail-out for deep stacks
2506     if (chunk_count >= trace_chunk_size) break;
2507   }
2508   set_depth(throwable(), chunk_count);
2509   log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2510 
2511   // We support the Throwable immutability protocol defined for Java 7.
2512   java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2513   assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2514 }
2515 
2516 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2517                                                    objArrayHandle stack_trace_array_h, TRAPS) {
2518 
2519   if (throwable.is_null() || stack_trace_array_h.is_null()) {
2520     THROW(vmSymbols::java_lang_NullPointerException());
2521   }
2522 
2523   assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2524 
2525   if (stack_trace_array_h->length() != depth(throwable())) {
2526     THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2527   }
2528 
2529   objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2530   BacktraceIterator iter(result, THREAD);
2531 
2532   int index = 0;
2533   while (iter.repeat()) {
2534     BacktraceElement bte = iter.next(THREAD);
2535 
2536     Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2537 
2538     if (stack_trace_element.is_null()) {
2539       THROW(vmSymbols::java_lang_NullPointerException());
2540     }
2541 
2542     InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2543     methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2544 
2545     java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2546                                          method,
2547                                          bte._version,
2548                                          bte._bci,
2549                                          bte._name, CHECK);
2550   }
2551 }
2552 
2553 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
2554   Thread* THREAD = Thread::current();
2555   objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
2556   BacktraceIterator iter(result, THREAD);
2557   // No backtrace available.
2558   if (!iter.repeat()) return false;
2559 
2560   // If the exception happened in a frame that has been hidden, i.e.,
2561   // omitted from the back trace, we can not compute the message.
2562   oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
2563   if (hidden != NULL) {
2564     return false;
2565   }
2566 
2567   // Get first backtrace element.
2568   BacktraceElement bte = iter.next(THREAD);
2569 
2570   InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2571   assert(holder != NULL, "first element should be non-null");
2572   Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
2573 
2574   // Original version is no longer available.
2575   if (m == NULL || !version_matches(m, bte._version)) {
2576     return false;
2577   }
2578 
2579   *method = m;
2580   *bci = bte._bci;
2581   return true;
2582 }
2583 
2584 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2585   // Allocate java.lang.StackTraceElement instance
2586   InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2587   assert(k != NULL, "must be loaded in 1.4+");
2588   if (k->should_be_initialized()) {
2589     k->initialize(CHECK_0);
2590   }
2591 
2592   Handle element = k->allocate_instance_handle(CHECK_0);
2593 
2594   int version = method->constants()->version();
2595   fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
2596   return element();
2597 }
2598 
2599 void java_lang_StackTraceElement::fill_in(Handle element,
2600                                           InstanceKlass* holder, const methodHandle& method,
2601                                           int version, int bci, Symbol* name, TRAPS) {
2602   assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2603 
2604   ResourceMark rm(THREAD);
2605   HandleMark hm(THREAD);
2606 
2607   // Fill in class name
2608   Handle java_class(THREAD, holder->java_mirror());
2609   oop classname = java_lang_Class::name(java_class, CHECK);
2610   java_lang_StackTraceElement::set_declaringClass(element(), classname);
2611   java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2612 
2613   oop loader = holder->class_loader();
2614   if (loader != NULL) {
2615     oop loader_name = java_lang_ClassLoader::name(loader);
2616     if (loader_name != NULL)
2617       java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2618   }
2619 
2620   // Fill in method name
2621   oop methodname = StringTable::intern(name, CHECK);
2622   java_lang_StackTraceElement::set_methodName(element(), methodname);
2623 
2624   // Fill in module name and version
2625   ModuleEntry* module = holder->module();
2626   if (module->is_named()) {
2627     oop module_name = StringTable::intern(module->name(), CHECK);
2628     java_lang_StackTraceElement::set_moduleName(element(), module_name);
2629     oop module_version;
2630     if (module->version() != NULL) {
2631       module_version = StringTable::intern(module->version(), CHECK);
2632     } else {
2633       module_version = NULL;
2634     }
2635     java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2636   }
2637 
2638   if (method() == NULL || !version_matches(method(), version)) {
2639     // The method was redefined, accurate line number information isn't available
2640     java_lang_StackTraceElement::set_fileName(element(), NULL);
2641     java_lang_StackTraceElement::set_lineNumber(element(), -1);
2642   } else {
2643     // Fill in source file name and line number.
2644     Symbol* source = Backtrace::get_source_file_name(holder, version);
2645     oop source_file = java_lang_Class::source_file(java_class());
2646     if (source != NULL) {
2647       // Class was not redefined. We can trust its cache if set,
2648       // else we have to initialize it.
2649       if (source_file == NULL) {
2650         source_file = StringTable::intern(source, CHECK);
2651         java_lang_Class::set_source_file(java_class(), source_file);
2652       }
2653     } else {
2654       // Class was redefined. Dump the cache if it was set.
2655       if (source_file != NULL) {
2656         source_file = NULL;
2657         java_lang_Class::set_source_file(java_class(), source_file);
2658       }
2659     }
2660     java_lang_StackTraceElement::set_fileName(element(), source_file);
2661 
2662     int line_number = Backtrace::get_line_number(method, bci);
2663     java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2664   }
2665 }
2666 
2667 #if INCLUDE_JVMCI
2668 void java_lang_StackTraceElement::decode(Handle mirror, methodHandle method, int bci, Symbol*& methodname, Symbol*& filename, int& line_number) {
2669   int method_id = method->orig_method_idnum();
2670   int cpref = method->name_index();
2671   decode(mirror, method_id, method->constants()->version(), bci, cpref, methodname, filename, line_number);
2672 }
2673 
2674 void java_lang_StackTraceElement::decode(Handle mirror, int method_id, int version, int bci, int cpref, Symbol*& methodname, Symbol*& filename, int& line_number) {
2675   // Fill in class name
2676   InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2677   Method* method = holder->method_with_orig_idnum(method_id, version);
2678 
2679   // The method can be NULL if the requested class version is gone
2680   Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
2681 
2682   // Fill in method name
2683   methodname = sym;
2684 
2685   if (!version_matches(method, version)) {
2686     // If the method was redefined, accurate line number information isn't available
2687     filename = NULL;
2688     line_number = -1;
2689   } else {
2690     // Fill in source file name and line number.
2691     // Use a specific ik version as a holder since the mirror might
2692     // refer to a version that is now obsolete and no longer accessible
2693     // via the previous versions list.
2694     holder = holder->get_klass_version(version);
2695     assert(holder != NULL, "sanity check");
2696     filename = holder->source_file_name();
2697     line_number = Backtrace::get_line_number(method, bci);
2698   }
2699 }
2700 #endif // INCLUDE_JVMCI
2701 
2702 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2703   HandleMark hm(THREAD);
2704   Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2705   Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2706   // we should expand MemberName::name when Throwable uses StackTrace
2707   // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2708   return method;
2709 }
2710 
2711 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2712   // set Method* or mid/cpref
2713   HandleMark hm(THREAD);
2714   Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2715   InstanceKlass* ik = method->method_holder();
2716   CallInfo info(method(), ik, CHECK);
2717   MethodHandles::init_method_MemberName(mname, info);
2718   // set bci
2719   java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2720   // method may be redefined; store the version
2721   int version = method->constants()->version();
2722   assert((jushort)version == version, "version should be short");
2723   java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2724 }
2725 
2726 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2727   ResourceMark rm(THREAD);
2728   HandleMark hm(THREAD);
2729   Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2730   Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2731   InstanceKlass* holder = InstanceKlass::cast(clazz);
2732   Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2733 
2734   short version = stackFrame->short_field(_version_offset);
2735   int bci = stackFrame->int_field(_bci_offset);
2736   Symbol* name = method->name();
2737   java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, name, CHECK);
2738 }
2739 
2740 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2741   macro(_memberName_offset,     k, "memberName",  object_signature, false); \
2742   macro(_bci_offset,            k, "bci",         int_signature,    false)
2743 
2744 void java_lang_StackFrameInfo::compute_offsets() {
2745   InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2746   STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2747   STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2748 }
2749 
2750 #if INCLUDE_CDS
2751 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2752   STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2753   STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2754 }
2755 #endif
2756 
2757 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2758   macro(_monitors_offset,   k, "monitors",    object_array_signature, false); \
2759   macro(_locals_offset,     k, "locals",      object_array_signature, false); \
2760   macro(_operands_offset,   k, "operands",    object_array_signature, false); \
2761   macro(_mode_offset,       k, "mode",        int_signature,          false)
2762 
2763 void java_lang_LiveStackFrameInfo::compute_offsets() {
2764   InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2765   LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2766 }
2767 
2768 #if INCLUDE_CDS
2769 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2770   LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2771 }
2772 #endif
2773 
2774 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2775   macro(override_offset, k, "override", bool_signature, false)
2776 
2777 void java_lang_reflect_AccessibleObject::compute_offsets() {
2778   InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2779   ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2780 }
2781 
2782 #if INCLUDE_CDS
2783 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2784   ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2785 }
2786 #endif
2787 
2788 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2789   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2790   return (jboolean) reflect->bool_field(override_offset);
2791 }
2792 
2793 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2794   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2795   reflect->bool_field_put(override_offset, (int) value);
2796 }
2797 
2798 #define METHOD_FIELDS_DO(macro) \
2799   macro(clazz_offset,          k, vmSymbols::clazz_name(),          class_signature,       false); \
2800   macro(name_offset,           k, vmSymbols::name_name(),           string_signature,      false); \
2801   macro(returnType_offset,     k, vmSymbols::returnType_name(),     class_signature,       false); \
2802   macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2803   macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2804   macro(slot_offset,           k, vmSymbols::slot_name(),           int_signature,         false); \
2805   macro(modifiers_offset,      k, vmSymbols::modifiers_name(),      int_signature,         false); \
2806   macro(signature_offset,             k, vmSymbols::signature_name(),             string_signature,     false); \
2807   macro(annotations_offset,           k, vmSymbols::annotations_name(),           byte_array_signature, false); \
2808   macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2809   macro(annotation_default_offset,    k, vmSymbols::annotation_default_name(),    byte_array_signature, false);
2810 
2811 void java_lang_reflect_Method::compute_offsets() {
2812   InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2813   METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2814 }
2815 
2816 #if INCLUDE_CDS
2817 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2818   METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2819 }
2820 #endif
2821 
2822 Handle java_lang_reflect_Method::create(TRAPS) {
2823   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2824   Klass* klass = SystemDictionary::reflect_Method_klass();
2825   // This class is eagerly initialized during VM initialization, since we keep a refence
2826   // to one of the methods
2827   assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2828   return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2829 }
2830 
2831 oop java_lang_reflect_Method::clazz(oop reflect) {
2832   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2833   return reflect->obj_field(clazz_offset);
2834 }
2835 
2836 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2837   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2838    reflect->obj_field_put(clazz_offset, value);
2839 }
2840 
2841 int java_lang_reflect_Method::slot(oop reflect) {
2842   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2843   return reflect->int_field(slot_offset);
2844 }
2845 
2846 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2847   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2848   reflect->int_field_put(slot_offset, value);
2849 }
2850 
2851 void java_lang_reflect_Method::set_name(oop method, oop value) {
2852   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2853   method->obj_field_put(name_offset, value);
2854 }
2855 
2856 oop java_lang_reflect_Method::return_type(oop method) {
2857   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2858   return method->obj_field(returnType_offset);
2859 }
2860 
2861 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2862   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2863   method->obj_field_put(returnType_offset, value);
2864 }
2865 
2866 oop java_lang_reflect_Method::parameter_types(oop method) {
2867   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2868   return method->obj_field(parameterTypes_offset);
2869 }
2870 
2871 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2872   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2873   method->obj_field_put(parameterTypes_offset, value);
2874 }
2875 
2876 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2877   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2878   method->obj_field_put(exceptionTypes_offset, value);
2879 }
2880 
2881 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2882   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2883   method->int_field_put(modifiers_offset, value);
2884 }
2885 
2886 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2887   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2888   method->obj_field_put(signature_offset, value);
2889 }
2890 
2891 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2892   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2893   method->obj_field_put(annotations_offset, value);
2894 }
2895 
2896 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2897   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2898   method->obj_field_put(parameter_annotations_offset, value);
2899 }
2900 
2901 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2902   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2903   method->obj_field_put(annotation_default_offset, value);
2904 }
2905 
2906 #define CONSTRUCTOR_FIELDS_DO(macro) \
2907   macro(clazz_offset,          k, vmSymbols::clazz_name(),          class_signature,       false); \
2908   macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2909   macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2910   macro(slot_offset,           k, vmSymbols::slot_name(),           int_signature,         false); \
2911   macro(modifiers_offset,      k, vmSymbols::modifiers_name(),      int_signature,         false); \
2912   macro(signature_offset,             k, vmSymbols::signature_name(),             string_signature,     false); \
2913   macro(annotations_offset,           k, vmSymbols::annotations_name(),           byte_array_signature, false); \
2914   macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
2915 
2916 void java_lang_reflect_Constructor::compute_offsets() {
2917   InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2918   CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2919 }
2920 
2921 #if INCLUDE_CDS
2922 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
2923   CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2924 }
2925 #endif
2926 
2927 Handle java_lang_reflect_Constructor::create(TRAPS) {
2928   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2929   Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2930   Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2931   InstanceKlass* ik = InstanceKlass::cast(k);
2932   // Ensure it is initialized
2933   ik->initialize(CHECK_NH);
2934   return ik->allocate_instance_handle(THREAD);
2935 }
2936 
2937 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2938   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2939   return reflect->obj_field(clazz_offset);
2940 }
2941 
2942 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2943   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2944    reflect->obj_field_put(clazz_offset, value);
2945 }
2946 
2947 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2948   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2949   return constructor->obj_field(parameterTypes_offset);
2950 }
2951 
2952 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2953   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2954   constructor->obj_field_put(parameterTypes_offset, value);
2955 }
2956 
2957 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2958   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2959   constructor->obj_field_put(exceptionTypes_offset, value);
2960 }
2961 
2962 int java_lang_reflect_Constructor::slot(oop reflect) {
2963   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2964   return reflect->int_field(slot_offset);
2965 }
2966 
2967 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2968   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2969   reflect->int_field_put(slot_offset, value);
2970 }
2971 
2972 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2973   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2974   constructor->int_field_put(modifiers_offset, value);
2975 }
2976 
2977 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2978   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2979   constructor->obj_field_put(signature_offset, value);
2980 }
2981 
2982 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2983   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2984   constructor->obj_field_put(annotations_offset, value);
2985 }
2986 
2987 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2988   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2989   method->obj_field_put(parameter_annotations_offset, value);
2990 }
2991 
2992 #define FIELD_FIELDS_DO(macro) \
2993   macro(clazz_offset,     k, vmSymbols::clazz_name(),     class_signature,  false); \
2994   macro(name_offset,      k, vmSymbols::name_name(),      string_signature, false); \
2995   macro(type_offset,      k, vmSymbols::type_name(),      class_signature,  false); \
2996   macro(slot_offset,      k, vmSymbols::slot_name(),      int_signature,    false); \
2997   macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature,    false); \
2998   macro(signature_offset,        k, vmSymbols::signature_name(),        string_signature,     false); \
2999   macro(annotations_offset,      k, vmSymbols::annotations_name(),      byte_array_signature, false);
3000 
3001 void java_lang_reflect_Field::compute_offsets() {
3002   InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3003   FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3004 }
3005 
3006 #if INCLUDE_CDS
3007 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3008   FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3009 }
3010 #endif
3011 
3012 Handle java_lang_reflect_Field::create(TRAPS) {
3013   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3014   Symbol* name = vmSymbols::java_lang_reflect_Field();
3015   Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3016   InstanceKlass* ik = InstanceKlass::cast(k);
3017   // Ensure it is initialized
3018   ik->initialize(CHECK_NH);
3019   return ik->allocate_instance_handle(THREAD);
3020 }
3021 
3022 oop java_lang_reflect_Field::clazz(oop reflect) {
3023   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3024   return reflect->obj_field(clazz_offset);
3025 }
3026 
3027 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3028   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3029    reflect->obj_field_put(clazz_offset, value);
3030 }
3031 
3032 oop java_lang_reflect_Field::name(oop field) {
3033   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3034   return field->obj_field(name_offset);
3035 }
3036 
3037 void java_lang_reflect_Field::set_name(oop field, oop value) {
3038   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3039   field->obj_field_put(name_offset, value);
3040 }
3041 
3042 oop java_lang_reflect_Field::type(oop field) {
3043   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3044   return field->obj_field(type_offset);
3045 }
3046 
3047 void java_lang_reflect_Field::set_type(oop field, oop value) {
3048   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3049   field->obj_field_put(type_offset, value);
3050 }
3051 
3052 int java_lang_reflect_Field::slot(oop reflect) {
3053   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3054   return reflect->int_field(slot_offset);
3055 }
3056 
3057 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3058   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3059   reflect->int_field_put(slot_offset, value);
3060 }
3061 
3062 int java_lang_reflect_Field::modifiers(oop field) {
3063   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3064   return field->int_field(modifiers_offset);
3065 }
3066 
3067 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3068   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3069   field->int_field_put(modifiers_offset, value);
3070 }
3071 
3072 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3073   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3074   field->obj_field_put(signature_offset, value);
3075 }
3076 
3077 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3078   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3079   field->obj_field_put(annotations_offset, value);
3080 }
3081 
3082 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3083   // Allocate java.lang.reflect.RecordComponent instance
3084   HandleMark hm(THREAD);
3085   InstanceKlass* ik = SystemDictionary::RecordComponent_klass();
3086   assert(ik != NULL, "must be loaded");
3087   if (ik->should_be_initialized()) {
3088     ik->initialize(CHECK_0);
3089   }
3090 
3091   Handle element = ik->allocate_instance_handle(CHECK_0);
3092 
3093   Handle decl_class(THREAD, holder->java_mirror());
3094   java_lang_reflect_RecordComponent::set_clazz(element(), decl_class());
3095 
3096   Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8
3097   oop component_name = StringTable::intern(name, CHECK_0);
3098   java_lang_reflect_RecordComponent::set_name(element(), component_name);
3099 
3100   Symbol* type = holder->constants()->symbol_at(component->descriptor_index());
3101   Handle component_type_h =
3102     SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_0);
3103   java_lang_reflect_RecordComponent::set_type(element(), component_type_h());
3104 
3105   Method* accessor_method = NULL;
3106   {
3107     // Prepend "()" to type to create the full method signature.
3108     ResourceMark rm(THREAD);
3109     int sig_len = type->utf8_length() + 3; // "()" and null char
3110     char* sig = NEW_RESOURCE_ARRAY(char, sig_len);
3111     jio_snprintf(sig, sig_len, "()%s", type->as_C_string());
3112     TempNewSymbol full_sig = SymbolTable::new_symbol(sig);
3113     accessor_method = holder->find_instance_method(name, full_sig);
3114   }
3115 
3116   if (accessor_method != NULL) {
3117     methodHandle method(THREAD, accessor_method);
3118     oop m = Reflection::new_method(method, false, CHECK_0);
3119     java_lang_reflect_RecordComponent::set_accessor(element(), m);
3120   } else {
3121     java_lang_reflect_RecordComponent::set_accessor(element(), NULL);
3122   }
3123 
3124   int sig_index = component->generic_signature_index();
3125   if (sig_index > 0) {
3126     Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8
3127     oop component_sig = StringTable::intern(sig, CHECK_0);
3128     java_lang_reflect_RecordComponent::set_signature(element(), component_sig);
3129   } else {
3130     java_lang_reflect_RecordComponent::set_signature(element(), NULL);
3131   }
3132 
3133   typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_0);
3134   java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop);
3135 
3136   typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_0);
3137   java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop);
3138 
3139   return element();
3140 }
3141 
3142 #define CONSTANTPOOL_FIELDS_DO(macro) \
3143   macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3144 
3145 void reflect_ConstantPool::compute_offsets() {
3146   InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3147   // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3148   CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3149 }
3150 
3151 #if INCLUDE_CDS
3152 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3153   CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3154 }
3155 #endif
3156 
3157 #define PARAMETER_FIELDS_DO(macro) \
3158   macro(name_offset,        k, vmSymbols::name_name(),        string_signature, false); \
3159   macro(modifiers_offset,   k, vmSymbols::modifiers_name(),   int_signature,    false); \
3160   macro(index_offset,       k, vmSymbols::index_name(),       int_signature,    false); \
3161   macro(executable_offset,  k, vmSymbols::executable_name(),  executable_signature, false)
3162 
3163 void java_lang_reflect_Parameter::compute_offsets() {
3164   InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3165   PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3166 }
3167 
3168 #if INCLUDE_CDS
3169 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3170   PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3171 }
3172 #endif
3173 
3174 Handle java_lang_reflect_Parameter::create(TRAPS) {
3175   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3176   Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3177   Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3178   InstanceKlass* ik = InstanceKlass::cast(k);
3179   // Ensure it is initialized
3180   ik->initialize(CHECK_NH);
3181   return ik->allocate_instance_handle(THREAD);
3182 }
3183 
3184 oop java_lang_reflect_Parameter::name(oop param) {
3185   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3186   return param->obj_field(name_offset);
3187 }
3188 
3189 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3190   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3191   param->obj_field_put(name_offset, value);
3192 }
3193 
3194 int java_lang_reflect_Parameter::modifiers(oop param) {
3195   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3196   return param->int_field(modifiers_offset);
3197 }
3198 
3199 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3200   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3201   param->int_field_put(modifiers_offset, value);
3202 }
3203 
3204 int java_lang_reflect_Parameter::index(oop param) {
3205   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3206   return param->int_field(index_offset);
3207 }
3208 
3209 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3210   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3211   param->int_field_put(index_offset, value);
3212 }
3213 
3214 oop java_lang_reflect_Parameter::executable(oop param) {
3215   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3216   return param->obj_field(executable_offset);
3217 }
3218 
3219 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3220   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3221   param->obj_field_put(executable_offset, value);
3222 }
3223 
3224 
3225 int java_lang_Module::loader_offset;
3226 int java_lang_Module::name_offset;
3227 int java_lang_Module::_module_entry_offset = -1;
3228 
3229 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3230   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3231   return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3232                           vmSymbols::java_lang_module_init_signature(),
3233                           loader, module_name, CHECK_NH);
3234 }
3235 
3236 #define MODULE_FIELDS_DO(macro) \
3237   macro(loader_offset,  k, vmSymbols::loader_name(),  classloader_signature, false); \
3238   macro(name_offset,    k, vmSymbols::name_name(),    string_signature,      false)
3239 
3240 void java_lang_Module::compute_offsets() {
3241   InstanceKlass* k = SystemDictionary::Module_klass();
3242   MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3243   MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3244 }
3245 
3246 #if INCLUDE_CDS
3247 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3248   MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3249   MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3250 }
3251 #endif
3252 
3253 oop java_lang_Module::loader(oop module) {
3254   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3255   return module->obj_field(loader_offset);
3256 }
3257 
3258 void java_lang_Module::set_loader(oop module, oop value) {
3259   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3260   module->obj_field_put(loader_offset, value);
3261 }
3262 
3263 oop java_lang_Module::name(oop module) {
3264   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3265   return module->obj_field(name_offset);
3266 }
3267 
3268 void java_lang_Module::set_name(oop module, oop value) {
3269   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3270   module->obj_field_put(name_offset, value);
3271 }
3272 
3273 ModuleEntry* java_lang_Module::module_entry(oop module) {
3274   assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3275   assert(module != NULL, "module can't be null");
3276   assert(oopDesc::is_oop(module), "module must be oop");
3277 
3278   ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3279   if (module_entry == NULL) {
3280     // If the inject field containing the ModuleEntry* is null then return the
3281     // class loader's unnamed module.
3282     oop loader = java_lang_Module::loader(module);
3283     Handle h_loader = Handle(Thread::current(), loader);
3284     ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3285     return loader_cld->unnamed_module();
3286   }
3287   return module_entry;
3288 }
3289 
3290 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3291   assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3292   assert(module != NULL, "module can't be null");
3293   assert(oopDesc::is_oop(module), "module must be oop");
3294   module->address_field_put(_module_entry_offset, (address)module_entry);
3295 }
3296 
3297 Handle reflect_ConstantPool::create(TRAPS) {
3298   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3299   InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3300   // Ensure it is initialized
3301   k->initialize(CHECK_NH);
3302   return k->allocate_instance_handle(THREAD);
3303 }
3304 
3305 
3306 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3307   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3308   oop mirror = value->pool_holder()->java_mirror();
3309   // Save the mirror to get back the constant pool.
3310   reflect->obj_field_put(_oop_offset, mirror);
3311 }
3312 
3313 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3314   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3315 
3316   oop mirror = reflect->obj_field(_oop_offset);
3317   Klass* k = java_lang_Class::as_Klass(mirror);
3318   assert(k->is_instance_klass(), "Must be");
3319 
3320   // Get the constant pool back from the klass.  Since class redefinition
3321   // merges the new constant pool into the old, this is essentially the
3322   // same constant pool as the original.  If constant pool merging is
3323   // no longer done in the future, this will have to change to save
3324   // the original.
3325   return InstanceKlass::cast(k)->constants();
3326 }
3327 
3328 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3329   macro(_base_offset, k, "base", object_signature, false)
3330 
3331 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3332   InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3333   UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3334 }
3335 
3336 #if INCLUDE_CDS
3337 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3338   UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3339 }
3340 #endif
3341 
3342 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3343   Klass* k = SystemDictionary::box_klass(type);
3344   if (k == NULL)  return NULL;
3345   InstanceKlass* ik = InstanceKlass::cast(k);
3346   if (!ik->is_initialized())  ik->initialize(CHECK_0);
3347   return ik->allocate_instance(THREAD);
3348 }
3349 
3350 
3351 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3352   oop box = initialize_and_allocate(type, CHECK_0);
3353   if (box == NULL)  return NULL;
3354   switch (type) {
3355     case T_BOOLEAN:
3356       box->bool_field_put(value_offset, value->z);
3357       break;
3358     case T_CHAR:
3359       box->char_field_put(value_offset, value->c);
3360       break;
3361     case T_FLOAT:
3362       box->float_field_put(value_offset, value->f);
3363       break;
3364     case T_DOUBLE:
3365       box->double_field_put(long_value_offset, value->d);
3366       break;
3367     case T_BYTE:
3368       box->byte_field_put(value_offset, value->b);
3369       break;
3370     case T_SHORT:
3371       box->short_field_put(value_offset, value->s);
3372       break;
3373     case T_INT:
3374       box->int_field_put(value_offset, value->i);
3375       break;
3376     case T_LONG:
3377       box->long_field_put(long_value_offset, value->j);
3378       break;
3379     default:
3380       return NULL;
3381   }
3382   return box;
3383 }
3384 
3385 
3386 BasicType java_lang_boxing_object::basic_type(oop box) {
3387   if (box == NULL)  return T_ILLEGAL;
3388   BasicType type = SystemDictionary::box_klass_type(box->klass());
3389   if (type == T_OBJECT)         // 'unknown' value returned by SD::bkt
3390     return T_ILLEGAL;
3391   return type;
3392 }
3393 
3394 
3395 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3396   BasicType type = SystemDictionary::box_klass_type(box->klass());
3397   switch (type) {
3398   case T_BOOLEAN:
3399     value->z = box->bool_field(value_offset);
3400     break;
3401   case T_CHAR:
3402     value->c = box->char_field(value_offset);
3403     break;
3404   case T_FLOAT:
3405     value->f = box->float_field(value_offset);
3406     break;
3407   case T_DOUBLE:
3408     value->d = box->double_field(long_value_offset);
3409     break;
3410   case T_BYTE:
3411     value->b = box->byte_field(value_offset);
3412     break;
3413   case T_SHORT:
3414     value->s = box->short_field(value_offset);
3415     break;
3416   case T_INT:
3417     value->i = box->int_field(value_offset);
3418     break;
3419   case T_LONG:
3420     value->j = box->long_field(long_value_offset);
3421     break;
3422   default:
3423     return T_ILLEGAL;
3424   } // end switch
3425   return type;
3426 }
3427 
3428 
3429 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3430   BasicType type = SystemDictionary::box_klass_type(box->klass());
3431   switch (type) {
3432   case T_BOOLEAN:
3433     box->bool_field_put(value_offset, value->z);
3434     break;
3435   case T_CHAR:
3436     box->char_field_put(value_offset, value->c);
3437     break;
3438   case T_FLOAT:
3439     box->float_field_put(value_offset, value->f);
3440     break;
3441   case T_DOUBLE:
3442     box->double_field_put(long_value_offset, value->d);
3443     break;
3444   case T_BYTE:
3445     box->byte_field_put(value_offset, value->b);
3446     break;
3447   case T_SHORT:
3448     box->short_field_put(value_offset, value->s);
3449     break;
3450   case T_INT:
3451     box->int_field_put(value_offset, value->i);
3452     break;
3453   case T_LONG:
3454     box->long_field_put(long_value_offset, value->j);
3455     break;
3456   default:
3457     return T_ILLEGAL;
3458   } // end switch
3459   return type;
3460 }
3461 
3462 
3463 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3464   switch (type) {
3465   case T_BOOLEAN:   st->print("%s", value->z ? "true" : "false");   break;
3466   case T_CHAR:      st->print("%d", value->c);                      break;
3467   case T_BYTE:      st->print("%d", value->b);                      break;
3468   case T_SHORT:     st->print("%d", value->s);                      break;
3469   case T_INT:       st->print("%d", value->i);                      break;
3470   case T_LONG:      st->print(JLONG_FORMAT, value->j);              break;
3471   case T_FLOAT:     st->print("%f", value->f);                      break;
3472   case T_DOUBLE:    st->print("%lf", value->d);                     break;
3473   default:          st->print("type %d?", type);                    break;
3474   }
3475 }
3476 
3477 // Support for java_lang_ref_Reference
3478 
3479 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3480   assert(obj != NULL, "sanity");
3481   if (offset != java_lang_ref_Reference::referent_offset) {
3482     return false;
3483   }
3484 
3485   Klass* k = obj->klass();
3486   if (!k->is_instance_klass()) {
3487     return false;
3488   }
3489 
3490   InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3491   bool is_reference = ik->reference_type() != REF_NONE;
3492   assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3493   return is_reference;
3494 }
3495 
3496 // Support for java_lang_ref_SoftReference
3497 //
3498 
3499 #define SOFTREFERENCE_FIELDS_DO(macro) \
3500   macro(timestamp_offset,    k, "timestamp", long_signature, false); \
3501   macro(static_clock_offset, k, "clock",     long_signature, true)
3502 
3503 void java_lang_ref_SoftReference::compute_offsets() {
3504   InstanceKlass* k = SystemDictionary::SoftReference_klass();
3505   SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3506 }
3507 
3508 #if INCLUDE_CDS
3509 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3510   SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3511 }
3512 #endif
3513 
3514 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3515   return ref->long_field(timestamp_offset);
3516 }
3517 
3518 jlong java_lang_ref_SoftReference::clock() {
3519   InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3520   oop base = ik->static_field_base_raw();
3521   return base->long_field(static_clock_offset);
3522 }
3523 
3524 void java_lang_ref_SoftReference::set_clock(jlong value) {
3525   InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3526   oop base = ik->static_field_base_raw();
3527   base->long_field_put(static_clock_offset, value);
3528 }
3529 
3530 // Support for java_lang_invoke_DirectMethodHandle
3531 
3532 int java_lang_invoke_DirectMethodHandle::_member_offset;
3533 
3534 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3535   oop member_name = NULL;
3536   assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3537          "a DirectMethodHandle oop is expected");
3538   return dmh->obj_field(member_offset_in_bytes());
3539 }
3540 
3541 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3542   macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3543 
3544 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3545   InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3546   DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3547 }
3548 
3549 #if INCLUDE_CDS
3550 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3551   DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3552 }
3553 #endif
3554 
3555 // Support for java_lang_invoke_MethodHandle
3556 
3557 int java_lang_invoke_MethodHandle::_type_offset;
3558 int java_lang_invoke_MethodHandle::_form_offset;
3559 
3560 int java_lang_invoke_MemberName::_clazz_offset;
3561 int java_lang_invoke_MemberName::_name_offset;
3562 int java_lang_invoke_MemberName::_type_offset;
3563 int java_lang_invoke_MemberName::_flags_offset;
3564 int java_lang_invoke_MemberName::_method_offset;
3565 int java_lang_invoke_MemberName::_vmindex_offset;
3566 
3567 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3568 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3569 
3570 int java_lang_invoke_LambdaForm::_vmentry_offset;
3571 
3572 #define METHODHANDLE_FIELDS_DO(macro) \
3573   macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3574   macro(_form_offset, k, "form",                 java_lang_invoke_LambdaForm_signature, false)
3575 
3576 void java_lang_invoke_MethodHandle::compute_offsets() {
3577   InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3578   METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3579 }
3580 
3581 #if INCLUDE_CDS
3582 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3583   METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3584 }
3585 #endif
3586 
3587 #define MEMBERNAME_FIELDS_DO(macro) \
3588   macro(_clazz_offset,   k, vmSymbols::clazz_name(),   class_signature,  false); \
3589   macro(_name_offset,    k, vmSymbols::name_name(),    string_signature, false); \
3590   macro(_type_offset,    k, vmSymbols::type_name(),    object_signature, false); \
3591   macro(_flags_offset,   k, vmSymbols::flags_name(),   int_signature,    false); \
3592   macro(_method_offset,  k, vmSymbols::method_name(),  java_lang_invoke_ResolvedMethodName_signature, false)
3593 
3594 void java_lang_invoke_MemberName::compute_offsets() {
3595   InstanceKlass* k = SystemDictionary::MemberName_klass();
3596   MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3597   MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3598 }
3599 
3600 #if INCLUDE_CDS
3601 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3602   MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3603   MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3604 }
3605 #endif
3606 
3607 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3608   InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3609   assert(k != NULL, "jdk mismatch");
3610   RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3611 }
3612 
3613 #if INCLUDE_CDS
3614 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3615   RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3616 }
3617 #endif
3618 
3619 #define LAMBDAFORM_FIELDS_DO(macro) \
3620   macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3621 
3622 void java_lang_invoke_LambdaForm::compute_offsets() {
3623   InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3624   assert (k != NULL, "jdk mismatch");
3625   LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3626 }
3627 
3628 #if INCLUDE_CDS
3629 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3630   LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3631 }
3632 #endif
3633 
3634 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3635   return obj != NULL && is_subclass(obj->klass());
3636 }
3637 
3638 
3639 oop java_lang_invoke_MethodHandle::type(oop mh) {
3640   return mh->obj_field(_type_offset);
3641 }
3642 
3643 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3644   mh->obj_field_put(_type_offset, mtype);
3645 }
3646 
3647 oop java_lang_invoke_MethodHandle::form(oop mh) {
3648   assert(_form_offset != 0, "");
3649   return mh->obj_field(_form_offset);
3650 }
3651 
3652 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3653   assert(_form_offset != 0, "");
3654   mh->obj_field_put(_form_offset, lform);
3655 }
3656 
3657 /// MemberName accessors
3658 
3659 oop java_lang_invoke_MemberName::clazz(oop mname) {
3660   assert(is_instance(mname), "wrong type");
3661   return mname->obj_field(_clazz_offset);
3662 }
3663 
3664 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3665   assert(is_instance(mname), "wrong type");
3666   mname->obj_field_put(_clazz_offset, clazz);
3667 }
3668 
3669 oop java_lang_invoke_MemberName::name(oop mname) {
3670   assert(is_instance(mname), "wrong type");
3671   return mname->obj_field(_name_offset);
3672 }
3673 
3674 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3675   assert(is_instance(mname), "wrong type");
3676   mname->obj_field_put(_name_offset, name);
3677 }
3678 
3679 oop java_lang_invoke_MemberName::type(oop mname) {
3680   assert(is_instance(mname), "wrong type");
3681   return mname->obj_field(_type_offset);
3682 }
3683 
3684 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3685   assert(is_instance(mname), "wrong type");
3686   mname->obj_field_put(_type_offset, type);
3687 }
3688 
3689 int java_lang_invoke_MemberName::flags(oop mname) {
3690   assert(is_instance(mname), "wrong type");
3691   return mname->int_field(_flags_offset);
3692 }
3693 
3694 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3695   assert(is_instance(mname), "wrong type");
3696   mname->int_field_put(_flags_offset, flags);
3697 }
3698 
3699 
3700 // Return vmtarget from ResolvedMethodName method field through indirection
3701 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3702   assert(is_instance(mname), "wrong type");
3703   oop method = mname->obj_field(_method_offset);
3704   return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3705 }
3706 
3707 bool java_lang_invoke_MemberName::is_method(oop mname) {
3708   assert(is_instance(mname), "must be MemberName");
3709   return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3710 }
3711 
3712 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3713   assert(is_instance(mname), "wrong type");
3714   mname->obj_field_put(_method_offset, resolved_method);
3715 }
3716 
3717 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3718   assert(is_instance(mname), "wrong type");
3719   return (intptr_t) mname->address_field(_vmindex_offset);
3720 }
3721 
3722 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3723   assert(is_instance(mname), "wrong type");
3724   mname->address_field_put(_vmindex_offset, (address) index);
3725 }
3726 
3727 
3728 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3729   assert(is_instance(resolved_method), "wrong type");
3730   Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3731   assert(m->is_method(), "must be");
3732   return m;
3733 }
3734 
3735 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3736 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3737   assert(is_instance(resolved_method), "wrong type");
3738   resolved_method->address_field_put(_vmtarget_offset, (address)m);
3739 }
3740 
3741 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3742   assert(is_instance(resolved_method), "wrong type");
3743   resolved_method->obj_field_put(_vmholder_offset, holder);
3744 }
3745 
3746 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3747   const Method* method = m();
3748 
3749   // lookup ResolvedMethod oop in the table, or create a new one and intern it
3750   oop resolved_method = ResolvedMethodTable::find_method(method);
3751   if (resolved_method != NULL) {
3752     return resolved_method;
3753   }
3754 
3755   InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3756   if (!k->is_initialized()) {
3757     k->initialize(CHECK_NULL);
3758   }
3759 
3760   oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3761 
3762   NoSafepointVerifier nsv;
3763 
3764   if (method->is_old()) {
3765     method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3766                                       method->get_new_method();
3767   }
3768 
3769   InstanceKlass* holder = method->method_holder();
3770 
3771   set_vmtarget(new_resolved_method, const_cast<Method*>(method));
3772   // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3773   // distinct loaders) to ensure the metadata is kept alive.
3774   // This mirror may be different than the one in clazz field.
3775   set_vmholder(new_resolved_method, holder->java_mirror());
3776 
3777   // Set flag in class to indicate this InstanceKlass has entries in the table
3778   // to avoid walking table during redefinition if none of the redefined classes
3779   // have any membernames in the table.
3780   holder->set_has_resolved_methods();
3781 
3782   return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3783 }
3784 
3785 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3786   assert(is_instance(lform), "wrong type");
3787   return lform->obj_field(_vmentry_offset);
3788 }
3789 
3790 
3791 // Support for java_lang_invoke_MethodType
3792 
3793 int java_lang_invoke_MethodType::_rtype_offset;
3794 int java_lang_invoke_MethodType::_ptypes_offset;
3795 
3796 #define METHODTYPE_FIELDS_DO(macro) \
3797   macro(_rtype_offset,  k, "rtype",  class_signature,       false); \
3798   macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3799 
3800 void java_lang_invoke_MethodType::compute_offsets() {
3801   InstanceKlass* k = SystemDictionary::MethodType_klass();
3802   METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3803 }
3804 
3805 #if INCLUDE_CDS
3806 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3807   METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3808 }
3809 #endif
3810 
3811 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3812   st->print("(");
3813   objArrayOop pts = ptypes(mt);
3814   for (int i = 0, limit = pts->length(); i < limit; i++) {
3815     java_lang_Class::print_signature(pts->obj_at(i), st);
3816   }
3817   st->print(")");
3818   java_lang_Class::print_signature(rtype(mt), st);
3819 }
3820 
3821 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
3822   ResourceMark rm;
3823   stringStream buffer(128);
3824   print_signature(mt, &buffer);
3825   const char* sigstr =       buffer.base();
3826   int         siglen = (int) buffer.size();
3827   Symbol *name;
3828   if (!intern_if_not_found) {
3829     name = SymbolTable::probe(sigstr, siglen);
3830   } else {
3831     name = SymbolTable::new_symbol(sigstr, siglen);
3832   }
3833   return name;
3834 }
3835 
3836 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3837   if (mt1 == mt2)
3838     return true;
3839   if (rtype(mt1) != rtype(mt2))
3840     return false;
3841   if (ptype_count(mt1) != ptype_count(mt2))
3842     return false;
3843   for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3844     if (ptype(mt1, i) != ptype(mt2, i))
3845       return false;
3846   }
3847   return true;
3848 }
3849 
3850 oop java_lang_invoke_MethodType::rtype(oop mt) {
3851   assert(is_instance(mt), "must be a MethodType");
3852   return mt->obj_field(_rtype_offset);
3853 }
3854 
3855 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3856   assert(is_instance(mt), "must be a MethodType");
3857   return (objArrayOop) mt->obj_field(_ptypes_offset);
3858 }
3859 
3860 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3861   return ptypes(mt)->obj_at(idx);
3862 }
3863 
3864 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3865   return ptypes(mt)->length();
3866 }
3867 
3868 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3869   objArrayOop pts = ptypes(mt);
3870   int count = pts->length();
3871   int slots = 0;
3872   for (int i = 0; i < count; i++) {
3873     BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3874     slots += type2size[bt];
3875   }
3876   return slots;
3877 }
3878 
3879 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3880   BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3881   return type2size[bt];
3882 }
3883 
3884 
3885 // Support for java_lang_invoke_CallSite
3886 
3887 int java_lang_invoke_CallSite::_target_offset;
3888 int java_lang_invoke_CallSite::_context_offset;
3889 
3890 #define CALLSITE_FIELDS_DO(macro) \
3891   macro(_target_offset,  k, "target", java_lang_invoke_MethodHandle_signature, false); \
3892   macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3893 
3894 void java_lang_invoke_CallSite::compute_offsets() {
3895   InstanceKlass* k = SystemDictionary::CallSite_klass();
3896   CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3897 }
3898 
3899 #if INCLUDE_CDS
3900 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
3901   CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3902 }
3903 #endif
3904 
3905 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
3906   assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3907 
3908   oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
3909   return dep_oop;
3910 }
3911 
3912 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3913 
3914 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3915 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
3916 
3917 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3918   InstanceKlass* k = SystemDictionary::Context_klass();
3919   CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3920 }
3921 
3922 #if INCLUDE_CDS
3923 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
3924   CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3925 }
3926 #endif
3927 
3928 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3929   assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3930   nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
3931   volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
3932   DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
3933   return dep_ctx;
3934 }
3935 
3936 // Support for java_security_AccessControlContext
3937 
3938 int java_security_AccessControlContext::_context_offset = 0;
3939 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3940 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3941 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3942 
3943 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
3944   macro(_context_offset,           k, "context",      protectiondomain_signature, false); \
3945   macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
3946   macro(_isPrivileged_offset,      k, "isPrivileged", bool_signature, false); \
3947   macro(_isAuthorized_offset,      k, "isAuthorized", bool_signature, false)
3948 
3949 void java_security_AccessControlContext::compute_offsets() {
3950   assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3951   InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
3952   ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3953 }
3954 
3955 #if INCLUDE_CDS
3956 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
3957   ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3958 }
3959 #endif
3960 
3961 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3962   assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3963   // Ensure klass is initialized
3964   SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3965   // Allocate result
3966   oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3967   // Fill in values
3968   result->obj_field_put(_context_offset, context());
3969   result->obj_field_put(_privilegedContext_offset, privileged_context());
3970   result->bool_field_put(_isPrivileged_offset, isPrivileged);
3971   // whitelist AccessControlContexts created by the JVM if present
3972   if (_isAuthorized_offset != -1) {
3973     result->bool_field_put(_isAuthorized_offset, true);
3974   }
3975   return result;
3976 }
3977 
3978 
3979 // Support for java_lang_ClassLoader
3980 
3981 bool java_lang_ClassLoader::offsets_computed = false;
3982 int  java_lang_ClassLoader::_loader_data_offset = -1;
3983 int  java_lang_ClassLoader::parallelCapable_offset = -1;
3984 int  java_lang_ClassLoader::name_offset = -1;
3985 int  java_lang_ClassLoader::nameAndId_offset = -1;
3986 int  java_lang_ClassLoader::unnamedModule_offset = -1;
3987 
3988 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
3989   assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3990   return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
3991 }
3992 
3993 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
3994   assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3995   return RawAccess<>::load_at(loader, _loader_data_offset);
3996 }
3997 
3998 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
3999   assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4000   HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4001 }
4002 
4003 #define CLASSLOADER_FIELDS_DO(macro) \
4004   macro(parallelCapable_offset, k1, "parallelLockMap",      concurrenthashmap_signature, false); \
4005   macro(name_offset,            k1, vmSymbols::name_name(), string_signature, false); \
4006   macro(nameAndId_offset,       k1, "nameAndId",            string_signature, false); \
4007   macro(unnamedModule_offset,   k1, "unnamedModule",        module_signature, false); \
4008   macro(parent_offset,          k1, "parent",               classloader_signature, false)
4009 
4010 void java_lang_ClassLoader::compute_offsets() {
4011   assert(!offsets_computed, "offsets should be initialized only once");
4012   offsets_computed = true;
4013 
4014   InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4015   CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4016 
4017   CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4018 }
4019 
4020 #if INCLUDE_CDS
4021 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4022   CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4023   CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4024 }
4025 #endif
4026 
4027 oop java_lang_ClassLoader::parent(oop loader) {
4028   assert(is_instance(loader), "loader must be oop");
4029   return loader->obj_field(parent_offset);
4030 }
4031 
4032 // Returns the name field of this class loader.  If the name field has not
4033 // been set, null will be returned.
4034 oop java_lang_ClassLoader::name(oop loader) {
4035   assert(is_instance(loader), "loader must be oop");
4036   return loader->obj_field(name_offset);
4037 }
4038 
4039 // Returns the nameAndId field of this class loader. The format is
4040 // as follows:
4041 //   If the defining loader has a name explicitly set then '<loader-name>' @<id>
4042 //   If the defining loader has no name then <qualified-class-name> @<id>
4043 //   If built-in loader, then omit '@<id>' as there is only one instance.
4044 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4045 oop java_lang_ClassLoader::nameAndId(oop loader) {
4046   assert(is_instance(loader), "loader must be oop");
4047   return loader->obj_field(nameAndId_offset);
4048 }
4049 
4050 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4051   assert(is_instance(loader), "loader must be oop");
4052   assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4053   oop acl = loader;
4054   debug_only(jint loop_count = 0);
4055   // This loop taken verbatim from ClassLoader.java:
4056   do {
4057     acl = parent(acl);
4058     if (cl == acl) {
4059       return true;
4060     }
4061     assert(++loop_count > 0, "loop_count overflow");
4062   } while (acl != NULL);
4063   return false;
4064 }
4065 
4066 bool java_lang_ClassLoader::is_instance(oop obj) {
4067   return obj != NULL && is_subclass(obj->klass());
4068 }
4069 
4070 
4071 // For class loader classes, parallelCapable defined
4072 // based on non-null field
4073 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4074 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4075   if (parallelCapable_offset == -1) {
4076      // Default for backward compatibility is false
4077      return false;
4078   }
4079   return (class_loader->obj_field(parallelCapable_offset) != NULL);
4080 }
4081 
4082 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4083   // Fix for 4474172; see evaluation for more details
4084   loader = non_reflection_class_loader(loader);
4085 
4086   oop cl = SystemDictionary::java_system_loader();
4087   while(cl != NULL) {
4088     if (cl == loader) return true;
4089     cl = parent(cl);
4090   }
4091   return false;
4092 }
4093 
4094 // Return true if this is one of the class loaders associated with
4095 // the generated bytecodes for reflection.
4096 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4097   if (loader != NULL) {
4098     Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4099     // This might be null in non-1.4 JDKs
4100     return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4101   }
4102   return false;
4103 }
4104 
4105 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4106   // See whether this is one of the class loaders associated with
4107   // the generated bytecodes for reflection, and if so, "magically"
4108   // delegate to its parent to prevent class loading from occurring
4109   // in places where applications using reflection didn't expect it.
4110   if (is_reflection_class_loader(loader)) {
4111     return parent(loader);
4112   }
4113   return loader;
4114 }
4115 
4116 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4117   assert(is_instance(loader), "loader must be oop");
4118   return loader->obj_field(unnamedModule_offset);
4119 }
4120 
4121 // Support for java_lang_System
4122 //
4123 #define SYSTEM_FIELDS_DO(macro) \
4124   macro(static_in_offset,  k, "in",  input_stream_signature, true); \
4125   macro(static_out_offset, k, "out", print_stream_signature, true); \
4126   macro(static_err_offset, k, "err", print_stream_signature, true); \
4127   macro(static_security_offset, k, "security", security_manager_signature, true)
4128 
4129 void java_lang_System::compute_offsets() {
4130   InstanceKlass* k = SystemDictionary::System_klass();
4131   SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4132 }
4133 
4134 #if INCLUDE_CDS
4135 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4136    SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4137 }
4138 #endif
4139 
4140 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4141 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4142 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4143 
4144 // Support for jdk_internal_misc_UnsafeConstants
4145 //
4146 class UnsafeConstantsFixup : public FieldClosure {
4147 private:
4148   int _address_size;
4149   int _page_size;
4150   bool _big_endian;
4151   bool _use_unaligned_access;
4152   int _data_cache_line_flush_size;
4153 public:
4154   UnsafeConstantsFixup() {
4155     // round up values for all static final fields
4156     _address_size = sizeof(void*);
4157     _page_size = os::vm_page_size();
4158     _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4159     _use_unaligned_access = UseUnalignedAccesses;
4160     _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size();
4161   }
4162 
4163   void do_field(fieldDescriptor* fd) {
4164     oop mirror = fd->field_holder()->java_mirror();
4165     assert(mirror != NULL, "UnsafeConstants must have mirror already");
4166     assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4167     assert(fd->is_final(), "fields of UnsafeConstants must be final");
4168     assert(fd->is_static(), "fields of UnsafeConstants must be static");
4169     if (fd->name() == vmSymbols::address_size_name()) {
4170       mirror->int_field_put(fd->offset(), _address_size);
4171     } else if (fd->name() == vmSymbols::page_size_name()) {
4172       mirror->int_field_put(fd->offset(), _page_size);
4173     } else if (fd->name() == vmSymbols::big_endian_name()) {
4174       mirror->bool_field_put(fd->offset(), _big_endian);
4175     } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4176       mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4177     } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) {
4178       mirror->int_field_put(fd->offset(), _data_cache_line_flush_size);
4179     } else {
4180       assert(false, "unexpected UnsafeConstants field");
4181     }
4182   }
4183 };
4184 
4185 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4186   UnsafeConstantsFixup fixup;
4187   SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4188 }
4189 
4190 int java_lang_Class::_klass_offset;
4191 int java_lang_Class::_array_klass_offset;
4192 int java_lang_Class::_oop_size_offset;
4193 int java_lang_Class::_static_oop_field_count_offset;
4194 int java_lang_Class::_class_loader_offset;
4195 int java_lang_Class::_module_offset;
4196 int java_lang_Class::_protection_domain_offset;
4197 int java_lang_Class::_component_mirror_offset;
4198 int java_lang_Class::_init_lock_offset;
4199 int java_lang_Class::_signers_offset;
4200 int java_lang_Class::_name_offset;
4201 int java_lang_Class::_source_file_offset;
4202 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4203 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4204 int java_lang_Throwable::backtrace_offset;
4205 int java_lang_Throwable::detailMessage_offset;
4206 int java_lang_Throwable::stackTrace_offset;
4207 int java_lang_Throwable::depth_offset;
4208 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4209 int java_lang_reflect_AccessibleObject::override_offset;
4210 int java_lang_reflect_Method::clazz_offset;
4211 int java_lang_reflect_Method::name_offset;
4212 int java_lang_reflect_Method::returnType_offset;
4213 int java_lang_reflect_Method::parameterTypes_offset;
4214 int java_lang_reflect_Method::exceptionTypes_offset;
4215 int java_lang_reflect_Method::slot_offset;
4216 int java_lang_reflect_Method::modifiers_offset;
4217 int java_lang_reflect_Method::signature_offset;
4218 int java_lang_reflect_Method::annotations_offset;
4219 int java_lang_reflect_Method::parameter_annotations_offset;
4220 int java_lang_reflect_Method::annotation_default_offset;
4221 int java_lang_reflect_Constructor::clazz_offset;
4222 int java_lang_reflect_Constructor::parameterTypes_offset;
4223 int java_lang_reflect_Constructor::exceptionTypes_offset;
4224 int java_lang_reflect_Constructor::slot_offset;
4225 int java_lang_reflect_Constructor::modifiers_offset;
4226 int java_lang_reflect_Constructor::signature_offset;
4227 int java_lang_reflect_Constructor::annotations_offset;
4228 int java_lang_reflect_Constructor::parameter_annotations_offset;
4229 int java_lang_reflect_Field::clazz_offset;
4230 int java_lang_reflect_Field::name_offset;
4231 int java_lang_reflect_Field::type_offset;
4232 int java_lang_reflect_Field::slot_offset;
4233 int java_lang_reflect_Field::modifiers_offset;
4234 int java_lang_reflect_Field::signature_offset;
4235 int java_lang_reflect_Field::annotations_offset;
4236 int java_lang_reflect_Parameter::name_offset;
4237 int java_lang_reflect_Parameter::modifiers_offset;
4238 int java_lang_reflect_Parameter::index_offset;
4239 int java_lang_reflect_Parameter::executable_offset;
4240 int java_lang_boxing_object::value_offset;
4241 int java_lang_boxing_object::long_value_offset;
4242 int java_lang_ref_Reference::referent_offset;
4243 int java_lang_ref_Reference::queue_offset;
4244 int java_lang_ref_Reference::next_offset;
4245 int java_lang_ref_Reference::discovered_offset;
4246 int java_lang_ref_SoftReference::timestamp_offset;
4247 int java_lang_ref_SoftReference::static_clock_offset;
4248 int java_lang_ClassLoader::parent_offset;
4249 int java_lang_System::static_in_offset;
4250 int java_lang_System::static_out_offset;
4251 int java_lang_System::static_err_offset;
4252 int java_lang_System::static_security_offset;
4253 int java_lang_StackTraceElement::methodName_offset;
4254 int java_lang_StackTraceElement::fileName_offset;
4255 int java_lang_StackTraceElement::lineNumber_offset;
4256 int java_lang_StackTraceElement::moduleName_offset;
4257 int java_lang_StackTraceElement::moduleVersion_offset;
4258 int java_lang_StackTraceElement::classLoaderName_offset;
4259 int java_lang_StackTraceElement::declaringClass_offset;
4260 int java_lang_StackTraceElement::declaringClassObject_offset;
4261 int java_lang_StackFrameInfo::_memberName_offset;
4262 int java_lang_StackFrameInfo::_bci_offset;
4263 int java_lang_StackFrameInfo::_version_offset;
4264 int java_lang_LiveStackFrameInfo::_monitors_offset;
4265 int java_lang_LiveStackFrameInfo::_locals_offset;
4266 int java_lang_LiveStackFrameInfo::_operands_offset;
4267 int java_lang_LiveStackFrameInfo::_mode_offset;
4268 int java_lang_AssertionStatusDirectives::classes_offset;
4269 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4270 int java_lang_AssertionStatusDirectives::packages_offset;
4271 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4272 int java_lang_AssertionStatusDirectives::deflt_offset;
4273 int java_nio_Buffer::_limit_offset;
4274 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4275 int reflect_ConstantPool::_oop_offset;
4276 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4277 int java_lang_Integer_IntegerCache::_static_cache_offset;
4278 int java_lang_Long_LongCache::_static_cache_offset;
4279 int java_lang_Character_CharacterCache::_static_cache_offset;
4280 int java_lang_Short_ShortCache::_static_cache_offset;
4281 int java_lang_Byte_ByteCache::_static_cache_offset;
4282 int java_lang_Boolean::_static_TRUE_offset;
4283 int java_lang_Boolean::_static_FALSE_offset;
4284 int java_lang_reflect_RecordComponent::clazz_offset;
4285 int java_lang_reflect_RecordComponent::name_offset;
4286 int java_lang_reflect_RecordComponent::type_offset;
4287 int java_lang_reflect_RecordComponent::accessor_offset;
4288 int java_lang_reflect_RecordComponent::signature_offset;
4289 int java_lang_reflect_RecordComponent::annotations_offset;
4290 int java_lang_reflect_RecordComponent::typeAnnotations_offset;
4291 
4292 
4293 
4294 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4295   macro(declaringClassObject_offset,  k, "declaringClassObject", class_signature, false); \
4296   macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4297   macro(moduleName_offset,      k, "moduleName",      string_signature, false); \
4298   macro(moduleVersion_offset,   k, "moduleVersion",   string_signature, false); \
4299   macro(declaringClass_offset,  k, "declaringClass",  string_signature, false); \
4300   macro(methodName_offset,      k, "methodName",      string_signature, false); \
4301   macro(fileName_offset,        k, "fileName",        string_signature, false); \
4302   macro(lineNumber_offset,      k, "lineNumber",      int_signature,    false)
4303 
4304 // Support for java_lang_StackTraceElement
4305 void java_lang_StackTraceElement::compute_offsets() {
4306   InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4307   STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4308 }
4309 
4310 #if INCLUDE_CDS
4311 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4312   STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4313 }
4314 #endif
4315 
4316 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4317   element->obj_field_put(fileName_offset, value);
4318 }
4319 
4320 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4321   element->obj_field_put(declaringClass_offset, value);
4322 }
4323 
4324 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4325   element->obj_field_put(methodName_offset, value);
4326 }
4327 
4328 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4329   element->int_field_put(lineNumber_offset, value);
4330 }
4331 
4332 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4333   element->obj_field_put(moduleName_offset, value);
4334 }
4335 
4336 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4337   element->obj_field_put(moduleVersion_offset, value);
4338 }
4339 
4340 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4341   element->obj_field_put(classLoaderName_offset, value);
4342 }
4343 
4344 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4345   element->obj_field_put(declaringClassObject_offset, value);
4346 }
4347 
4348 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4349   element->short_field_put(_version_offset, value);
4350 }
4351 
4352 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4353   assert(value >= 0 && value < max_jushort, "must be a valid bci value");
4354   element->int_field_put(_bci_offset, value);
4355 }
4356 
4357 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4358   element->obj_field_put(_monitors_offset, value);
4359 }
4360 
4361 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4362   element->obj_field_put(_locals_offset, value);
4363 }
4364 
4365 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4366   element->obj_field_put(_operands_offset, value);
4367 }
4368 
4369 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4370   element->int_field_put(_mode_offset, value);
4371 }
4372 
4373 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4374 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4375   macro(classes_offset,        k, "classes",        string_array_signature, false); \
4376   macro(classEnabled_offset,   k, "classEnabled",   bool_array_signature, false); \
4377   macro(packages_offset,       k, "packages",       string_array_signature, false); \
4378   macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature,   false); \
4379   macro(deflt_offset,          k, "deflt",          bool_signature,         false)
4380 
4381 void java_lang_AssertionStatusDirectives::compute_offsets() {
4382   InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4383   ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4384 }
4385 
4386 #if INCLUDE_CDS
4387 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4388   ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4389 }
4390 #endif
4391 
4392 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4393   o->obj_field_put(classes_offset, val);
4394 }
4395 
4396 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4397   o->obj_field_put(classEnabled_offset, val);
4398 }
4399 
4400 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4401   o->obj_field_put(packages_offset, val);
4402 }
4403 
4404 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4405   o->obj_field_put(packageEnabled_offset, val);
4406 }
4407 
4408 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4409   o->bool_field_put(deflt_offset, val);
4410 }
4411 
4412 
4413 // Support for intrinsification of java.nio.Buffer.checkIndex
4414 int java_nio_Buffer::limit_offset() {
4415   return _limit_offset;
4416 }
4417 
4418 #define BUFFER_FIELDS_DO(macro) \
4419   macro(_limit_offset, k, "limit", int_signature, false)
4420 
4421 void java_nio_Buffer::compute_offsets() {
4422   InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4423   assert(k != NULL, "must be loaded in 1.4+");
4424   BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4425 }
4426 
4427 #if INCLUDE_CDS
4428 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4429   BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4430 }
4431 #endif
4432 
4433 #define AOS_FIELDS_DO(macro) \
4434   macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4435 
4436 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4437   InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4438   AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4439 }
4440 
4441 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4442   assert(_owner_offset != 0, "Must be initialized");
4443   return obj->obj_field(_owner_offset);
4444 }
4445 
4446 #if INCLUDE_CDS
4447 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4448   AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4449 }
4450 #endif
4451 
4452 #define INTEGER_CACHE_FIELDS_DO(macro) \
4453   macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4454 
4455 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4456   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4457   INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4458 }
4459 
4460 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4461   oop base = ik->static_field_base_raw();
4462   return objArrayOop(base->obj_field(_static_cache_offset));
4463 }
4464 
4465 Symbol* java_lang_Integer_IntegerCache::symbol() {
4466   return vmSymbols::java_lang_Integer_IntegerCache();
4467 }
4468 
4469 #if INCLUDE_CDS
4470 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4471   INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4472 }
4473 #endif
4474 #undef INTEGER_CACHE_FIELDS_DO
4475 
4476 jint java_lang_Integer::value(oop obj) {
4477    jvalue v;
4478    java_lang_boxing_object::get_value(obj, &v);
4479    return v.i;
4480 }
4481 
4482 #define LONG_CACHE_FIELDS_DO(macro) \
4483   macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4484 
4485 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4486   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4487   LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4488 }
4489 
4490 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4491   oop base = ik->static_field_base_raw();
4492   return objArrayOop(base->obj_field(_static_cache_offset));
4493 }
4494 
4495 Symbol* java_lang_Long_LongCache::symbol() {
4496   return vmSymbols::java_lang_Long_LongCache();
4497 }
4498 
4499 #if INCLUDE_CDS
4500 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4501   LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4502 }
4503 #endif
4504 #undef LONG_CACHE_FIELDS_DO
4505 
4506 jlong java_lang_Long::value(oop obj) {
4507    jvalue v;
4508    java_lang_boxing_object::get_value(obj, &v);
4509    return v.j;
4510 }
4511 
4512 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4513   macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4514 
4515 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4516   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4517   CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4518 }
4519 
4520 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4521   oop base = ik->static_field_base_raw();
4522   return objArrayOop(base->obj_field(_static_cache_offset));
4523 }
4524 
4525 Symbol* java_lang_Character_CharacterCache::symbol() {
4526   return vmSymbols::java_lang_Character_CharacterCache();
4527 }
4528 
4529 #if INCLUDE_CDS
4530 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4531   CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4532 }
4533 #endif
4534 #undef CHARACTER_CACHE_FIELDS_DO
4535 
4536 jchar java_lang_Character::value(oop obj) {
4537    jvalue v;
4538    java_lang_boxing_object::get_value(obj, &v);
4539    return v.c;
4540 }
4541 
4542 #define SHORT_CACHE_FIELDS_DO(macro) \
4543   macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4544 
4545 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4546   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4547   SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4548 }
4549 
4550 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4551   oop base = ik->static_field_base_raw();
4552   return objArrayOop(base->obj_field(_static_cache_offset));
4553 }
4554 
4555 Symbol* java_lang_Short_ShortCache::symbol() {
4556   return vmSymbols::java_lang_Short_ShortCache();
4557 }
4558 
4559 #if INCLUDE_CDS
4560 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4561   SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4562 }
4563 #endif
4564 #undef SHORT_CACHE_FIELDS_DO
4565 
4566 jshort java_lang_Short::value(oop obj) {
4567    jvalue v;
4568    java_lang_boxing_object::get_value(obj, &v);
4569    return v.s;
4570 }
4571 
4572 #define BYTE_CACHE_FIELDS_DO(macro) \
4573   macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4574 
4575 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4576   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4577   BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4578 }
4579 
4580 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4581   oop base = ik->static_field_base_raw();
4582   return objArrayOop(base->obj_field(_static_cache_offset));
4583 }
4584 
4585 Symbol* java_lang_Byte_ByteCache::symbol() {
4586   return vmSymbols::java_lang_Byte_ByteCache();
4587 }
4588 
4589 #if INCLUDE_CDS
4590 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4591   BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4592 }
4593 #endif
4594 #undef BYTE_CACHE_FIELDS_DO
4595 
4596 jbyte java_lang_Byte::value(oop obj) {
4597    jvalue v;
4598    java_lang_boxing_object::get_value(obj, &v);
4599    return v.b;
4600 }
4601 #define BOOLEAN_FIELDS_DO(macro) \
4602   macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4603   macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4604 
4605 
4606 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4607   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4608   BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4609 }
4610 
4611 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4612   oop base = ik->static_field_base_raw();
4613   return base->obj_field(_static_TRUE_offset);
4614 }
4615 
4616 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4617   oop base = ik->static_field_base_raw();
4618   return base->obj_field(_static_FALSE_offset);
4619 }
4620 
4621 Symbol* java_lang_Boolean::symbol() {
4622   return vmSymbols::java_lang_Boolean();
4623 }
4624 
4625 #if INCLUDE_CDS
4626 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4627   BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4628 }
4629 #endif
4630 #undef BOOLEAN_CACHE_FIELDS_DO
4631 
4632 jboolean java_lang_Boolean::value(oop obj) {
4633    jvalue v;
4634    java_lang_boxing_object::get_value(obj, &v);
4635    return v.z;
4636 }
4637 
4638 static int member_offset(int hardcoded_offset) {
4639   return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4640 }
4641 
4642 #define RECORDCOMPONENT_FIELDS_DO(macro) \
4643   macro(clazz_offset,       k, "clazz",       class_signature,  false); \
4644   macro(name_offset,        k, "name",        string_signature, false); \
4645   macro(type_offset,        k, "type",        class_signature,  false); \
4646   macro(accessor_offset,    k, "accessor",    reflect_method_signature, false); \
4647   macro(signature_offset,   k, "signature",   string_signature, false); \
4648   macro(annotations_offset, k, "annotations", byte_array_signature,     false); \
4649   macro(typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false);
4650 
4651 // Support for java_lang_reflect_RecordComponent
4652 void java_lang_reflect_RecordComponent::compute_offsets() {
4653   InstanceKlass* k = SystemDictionary::RecordComponent_klass();
4654   RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4655 }
4656 
4657 #if INCLUDE_CDS
4658 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) {
4659   RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4660 }
4661 #endif
4662 
4663 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) {
4664   element->obj_field_put(clazz_offset, value);
4665 }
4666 
4667 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) {
4668   element->obj_field_put(name_offset, value);
4669 }
4670 
4671 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) {
4672   element->obj_field_put(type_offset, value);
4673 }
4674 
4675 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) {
4676   element->obj_field_put(accessor_offset, value);
4677 }
4678 
4679 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) {
4680   element->obj_field_put(signature_offset, value);
4681 }
4682 
4683 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) {
4684   element->obj_field_put(annotations_offset, value);
4685 }
4686 
4687 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) {
4688   element->obj_field_put(typeAnnotations_offset, value);
4689 }
4690 
4691 // Compute hard-coded offsets
4692 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4693 // are not available to determine the offset_of_static_fields.
4694 void JavaClasses::compute_hard_coded_offsets() {
4695 
4696   // java_lang_boxing_object
4697   java_lang_boxing_object::value_offset      = member_offset(java_lang_boxing_object::hc_value_offset);
4698   java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4699 
4700   // java_lang_ref_Reference
4701   java_lang_ref_Reference::referent_offset    = member_offset(java_lang_ref_Reference::hc_referent_offset);
4702   java_lang_ref_Reference::queue_offset       = member_offset(java_lang_ref_Reference::hc_queue_offset);
4703   java_lang_ref_Reference::next_offset        = member_offset(java_lang_ref_Reference::hc_next_offset);
4704   java_lang_ref_Reference::discovered_offset  = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4705 }
4706 
4707 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4708 
4709 // Compute non-hard-coded field offsets of all the classes in this file
4710 void JavaClasses::compute_offsets() {
4711   if (UseSharedSpaces) {
4712     assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4713                                               JvmtiExport::has_early_class_hook_env()),
4714            "JavaClasses::compute_offsets() must be called in early JVMTI phase.");
4715     // None of the classes used by the rest of this function can be replaced by
4716     // JMVTI ClassFileLoadHook.
4717     // We are safe to use the archived offsets, which have already been restored
4718     // by JavaClasses::serialize_offsets, without computing the offsets again.
4719     return;
4720   }
4721 
4722   // We have already called the compute_offsets() of the
4723   // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String and java_lang_Class)
4724   // earlier inside SystemDictionary::resolve_well_known_classes()
4725   BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4726 }
4727 
4728 #if INCLUDE_CDS
4729 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4730 
4731 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4732   BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4733 }
4734 #endif
4735 
4736 
4737 #ifndef PRODUCT
4738 
4739 // These functions exist to assert the validity of hard-coded field offsets to guard
4740 // against changes in the class files
4741 
4742 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4743   EXCEPTION_MARK;
4744   fieldDescriptor fd;
4745   TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4746   Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4747   InstanceKlass* ik = InstanceKlass::cast(k);
4748   TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4749   TempNewSymbol f_sig  = SymbolTable::new_symbol(field_sig);
4750   if (!ik->find_local_field(f_name, f_sig, &fd)) {
4751     tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4752     return false;
4753   }
4754   if (fd.is_static()) {
4755     tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4756     return false;
4757   }
4758   if (fd.offset() == hardcoded_offset ) {
4759     return true;
4760   } else {
4761     tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4762                   klass_name, field_name, hardcoded_offset, fd.offset());
4763     return false;
4764   }
4765 }
4766 
4767 // Check the hard-coded field offsets of all the classes in this file
4768 
4769 void JavaClasses::check_offsets() {
4770   bool valid = true;
4771 
4772 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4773   valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4774 
4775 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4776   valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4777 
4778   // Boxed primitive objects (java_lang_boxing_object)
4779 
4780   CHECK_OFFSET("java/lang/Boolean",   java_lang_boxing_object, value, "Z");
4781   CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4782   CHECK_OFFSET("java/lang/Float",     java_lang_boxing_object, value, "F");
4783   CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4784   CHECK_OFFSET("java/lang/Byte",      java_lang_boxing_object, value, "B");
4785   CHECK_OFFSET("java/lang/Short",     java_lang_boxing_object, value, "S");
4786   CHECK_OFFSET("java/lang/Integer",   java_lang_boxing_object, value, "I");
4787   CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4788 
4789   // java.lang.ref.Reference
4790 
4791   CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4792   CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4793   CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4794   // Fake field
4795   //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4796 
4797   if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4798 }
4799 
4800 #endif // PRODUCT
4801 
4802 int InjectedField::compute_offset() {
4803   InstanceKlass* ik = InstanceKlass::cast(klass());
4804   for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4805     if (!may_be_java && !fs.access_flags().is_internal()) {
4806       // Only look at injected fields
4807       continue;
4808     }
4809     if (fs.name() == name() && fs.signature() == signature()) {
4810       return fs.offset();
4811     }
4812   }
4813   ResourceMark rm;
4814   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)" : "");
4815 #ifndef PRODUCT
4816   ik->print();
4817   tty->print_cr("all fields:");
4818   for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4819     tty->print_cr("  name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4820   }
4821 #endif //PRODUCT
4822   vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
4823   return -1;
4824 }
4825 
4826 void javaClasses_init() {
4827   JavaClasses::compute_offsets();
4828   JavaClasses::check_offsets();
4829   FilteredFieldsMap::initialize();  // must be done after computing offsets.
4830 }