1 /*
   2  * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "classfile/altHashing.hpp"
  27 #include "classfile/classLoaderData.inline.hpp"
  28 #include "classfile/javaClasses.inline.hpp"
  29 #include "classfile/moduleEntry.hpp"
  30 #include "classfile/stringTable.hpp"
  31 #include "classfile/symbolTable.hpp"
  32 #include "classfile/vmSymbols.hpp"
  33 #include "code/debugInfo.hpp"
  34 #include "code/dependencyContext.hpp"
  35 #include "code/pcDesc.hpp"
  36 #include "interpreter/interpreter.hpp"
  37 #include "interpreter/linkResolver.hpp"
  38 #include "logging/log.hpp"
  39 #include "logging/logStream.hpp"
  40 #include "memory/heapShared.inline.hpp"
  41 #include "memory/metaspaceShared.hpp"
  42 #include "memory/oopFactory.hpp"
  43 #include "memory/resourceArea.hpp"
  44 #include "memory/universe.hpp"
  45 #include "oops/fieldStreams.hpp"
  46 #include "oops/instanceKlass.hpp"
  47 #include "oops/instanceMirrorKlass.hpp"
  48 #include "oops/klass.hpp"
  49 #include "oops/method.inline.hpp"
  50 #include "oops/objArrayOop.inline.hpp"
  51 #include "oops/oop.inline.hpp"
  52 #include "oops/symbol.hpp"
  53 #include "oops/typeArrayOop.inline.hpp"
  54 #include "prims/jvmtiExport.hpp"
  55 #include "prims/resolvedMethodTable.hpp"
  56 #include "runtime/fieldDescriptor.inline.hpp"
  57 #include "runtime/frame.inline.hpp"
  58 #include "runtime/handles.inline.hpp"
  59 #include "runtime/interfaceSupport.inline.hpp"
  60 #include "runtime/java.hpp"
  61 #include "runtime/javaCalls.hpp"
  62 #include "runtime/jniHandles.inline.hpp"
  63 #include "runtime/safepoint.hpp"
  64 #include "runtime/safepointVerifiers.hpp"
  65 #include "runtime/thread.inline.hpp"
  66 #include "runtime/vframe.inline.hpp"
  67 #include "utilities/align.hpp"
  68 #include "utilities/preserveException.hpp"
  69 #include "utilities/utf8.hpp"
  70 #if INCLUDE_JVMCI
  71 #include "jvmci/jvmciJavaClasses.hpp"
  72 #endif
  73 
  74 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java)    \
  75   klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
  76 
  77 #if INCLUDE_CDS
  78 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
  79   f->do_u4((u4*)&_##name##_offset);
  80 #endif
  81 
  82 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java)           \
  83   { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
  84 
  85 InjectedField JavaClasses::_injected_fields[] = {
  86   ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
  87 };
  88 
  89 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
  90   return _injected_fields[id].compute_offset();
  91 }
  92 
  93 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
  94   *field_count = 0;
  95 
  96   vmSymbols::SID sid = vmSymbols::find_sid(class_name);
  97   if (sid == vmSymbols::NO_SID) {
  98     // Only well known classes can inject fields
  99     return NULL;
 100   }
 101 
 102   int count = 0;
 103   int start = -1;
 104 
 105 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
 106   if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) {              \
 107     count++;                                                       \
 108     if (start == -1) start = klass##_##name##_enum;                \
 109   }
 110   ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
 111 #undef LOOKUP_INJECTED_FIELD
 112 
 113   if (start != -1) {
 114     *field_count = count;
 115     return _injected_fields + start;
 116   }
 117   return NULL;
 118 }
 119 
 120 
 121 // Helpful routine for computing field offsets at run time rather than hardcoding them
 122 // Finds local fields only, including static fields.  Static field offsets are from the
 123 // beginning of the mirror.
 124 static void compute_offset(int &dest_offset,
 125                            InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
 126                            bool is_static = false) {
 127   fieldDescriptor fd;
 128   if (ik == NULL) {
 129     ResourceMark rm;
 130     log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
 131     vm_exit_during_initialization("Invalid layout of well-known class");
 132   }
 133 
 134   if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
 135     ResourceMark rm;
 136     log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
 137                      name_symbol->as_C_string(), signature_symbol->as_C_string());
 138 #ifndef PRODUCT
 139     // Prints all fields and offsets
 140     Log(class) lt;
 141     LogStream ls(lt.error());
 142     ik->print_on(&ls);
 143 #endif //PRODUCT
 144     vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
 145   }
 146   dest_offset = fd.offset();
 147 }
 148 
 149 // Overloading to pass name as a string.
 150 static void compute_offset(int& dest_offset, InstanceKlass* ik,
 151                            const char* name_string, Symbol* signature_symbol,
 152                            bool is_static = false) {
 153   TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
 154   if (name == NULL) {
 155     ResourceMark rm;
 156     log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
 157     vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name());
 158   }
 159   compute_offset(dest_offset, ik, name, signature_symbol, is_static);
 160 }
 161 
 162 int java_lang_String::value_offset  = 0;
 163 int java_lang_String::hash_offset   = 0;
 164 int java_lang_String::hashIsZero_offset = 0;
 165 int java_lang_String::coder_offset  = 0;
 166 
 167 bool java_lang_String::initialized  = false;
 168 
 169 bool java_lang_String::is_instance(oop obj) {
 170   return is_instance_inlined(obj);
 171 }
 172 
 173 #if INCLUDE_CDS
 174 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
 175   f->do_u4((u4*)&offset)
 176 #endif
 177 
 178 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
 179   compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
 180 
 181 #define STRING_FIELDS_DO(macro) \
 182   macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
 183   macro(hash_offset,  k, "hash",                  int_signature,        false); \
 184   macro(hashIsZero_offset, k, "hashIsZero",       bool_signature,       false); \
 185   macro(coder_offset, k, "coder",                 byte_signature,       false);
 186 
 187 void java_lang_String::compute_offsets() {
 188   if (initialized) {
 189     return;
 190   }
 191 
 192   InstanceKlass* k = SystemDictionary::String_klass();
 193   STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
 194 
 195   initialized = true;
 196 }
 197 
 198 #if INCLUDE_CDS
 199 void java_lang_String::serialize_offsets(SerializeClosure* f) {
 200   STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
 201   f->do_bool(&initialized);
 202 }
 203 #endif
 204 
 205 class CompactStringsFixup : public FieldClosure {
 206 private:
 207   bool _value;
 208 
 209 public:
 210   CompactStringsFixup(bool value) : _value(value) {}
 211 
 212   void do_field(fieldDescriptor* fd) {
 213     if (fd->name() == vmSymbols::compact_strings_name()) {
 214       oop mirror = fd->field_holder()->java_mirror();
 215       assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
 216       assert(mirror != NULL, "String must have mirror already");
 217       mirror->bool_field_put(fd->offset(), _value);
 218     }
 219   }
 220 };
 221 
 222 void java_lang_String::set_compact_strings(bool value) {
 223   CompactStringsFixup fix(value);
 224   SystemDictionary::String_klass()->do_local_static_fields(&fix);
 225 }
 226 
 227 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
 228   assert(initialized, "Must be initialized");
 229   assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
 230 
 231   // Create the String object first, so there's a chance that the String
 232   // and the char array it points to end up in the same cache line.
 233   oop obj;
 234   obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
 235 
 236   // Create the char array.  The String object must be handlized here
 237   // because GC can happen as a result of the allocation attempt.
 238   Handle h_obj(THREAD, obj);
 239   int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
 240   typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
 241 
 242   // Point the String at the char array
 243   obj = h_obj();
 244   set_value(obj, buffer);
 245   // No need to zero the offset, allocation zero'ed the entire String object
 246   set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
 247   return h_obj;
 248 }
 249 
 250 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
 251   bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
 252   Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
 253   typeArrayOop buffer = value(h_obj());
 254   assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
 255   if (is_latin1) {
 256     for (int index = 0; index < length; index++) {
 257       buffer->byte_at_put(index, (jbyte)unicode[index]);
 258     }
 259   } else {
 260     for (int index = 0; index < length; index++) {
 261       buffer->char_at_put(index, unicode[index]);
 262     }
 263   }
 264 
 265 #ifdef ASSERT
 266   {
 267     ResourceMark rm;
 268     char* expected = UNICODE::as_utf8(unicode, length);
 269     char* actual = as_utf8_string(h_obj());
 270     if (strcmp(expected, actual) != 0) {
 271       tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
 272       ShouldNotReachHere();
 273     }
 274   }
 275 #endif
 276 
 277   return h_obj;
 278 }
 279 
 280 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
 281   Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
 282   return h_obj();
 283 }
 284 
 285 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
 286   if (utf8_str == NULL) {
 287     return Handle();
 288   }
 289   bool has_multibyte, is_latin1;
 290   int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
 291   if (!CompactStrings) {
 292     has_multibyte = true;
 293     is_latin1 = false;
 294   }
 295 
 296   Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
 297   if (length > 0) {
 298     if (!has_multibyte) {
 299       const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
 300       ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
 301     } else if (is_latin1) {
 302       UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
 303     } else {
 304       UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
 305     }
 306   }
 307 
 308 #ifdef ASSERT
 309   // This check is too strict because the input string is not necessarily valid UTF8.
 310   // For example, it may be created with arbitrary content via jni_NewStringUTF.
 311   /*
 312   {
 313     ResourceMark rm;
 314     const char* expected = utf8_str;
 315     char* actual = as_utf8_string(h_obj());
 316     if (strcmp(expected, actual) != 0) {
 317       tty->print_cr("String conversion failure: %s --> %s", expected, actual);
 318       ShouldNotReachHere();
 319     }
 320   }
 321   */
 322 #endif
 323 
 324   return h_obj;
 325 }
 326 
 327 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
 328   Handle h_obj = create_from_str(utf8_str, CHECK_0);
 329   return h_obj();
 330 }
 331 
 332 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
 333   const char* utf8_str = (char*)symbol->bytes();
 334   int utf8_len = symbol->utf8_length();
 335 
 336   bool has_multibyte, is_latin1;
 337   int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
 338   if (!CompactStrings) {
 339     has_multibyte = true;
 340     is_latin1 = false;
 341   }
 342 
 343   Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
 344   if (length > 0) {
 345     if (!has_multibyte) {
 346       const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
 347       ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
 348     } else if (is_latin1) {
 349       UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
 350     } else {
 351       UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
 352     }
 353   }
 354 
 355 #ifdef ASSERT
 356   {
 357     ResourceMark rm;
 358     const char* expected = symbol->as_utf8();
 359     char* actual = as_utf8_string(h_obj());
 360     if (strncmp(expected, actual, utf8_len) != 0) {
 361       tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
 362       ShouldNotReachHere();
 363     }
 364   }
 365 #endif
 366 
 367   return h_obj;
 368 }
 369 
 370 // Converts a C string to a Java String based on current encoding
 371 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
 372   assert(str != NULL, "bad arguments");
 373 
 374   typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
 375   static to_java_string_fn_t _to_java_string_fn = NULL;
 376 
 377   if (_to_java_string_fn == NULL) {
 378     void *lib_handle = os::native_java_library();
 379     _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
 380     if (_to_java_string_fn == NULL) {
 381       fatal("NewStringPlatform missing");
 382     }
 383   }
 384 
 385   jstring js = NULL;
 386   { JavaThread* thread = (JavaThread*)THREAD;
 387     assert(thread->is_Java_thread(), "must be java thread");
 388     HandleMark hm(thread);
 389     ThreadToNativeFromVM ttn(thread);
 390     js = (_to_java_string_fn)(thread->jni_environment(), str);
 391   }
 392   return Handle(THREAD, JNIHandles::resolve(js));
 393 }
 394 
 395 // Converts a Java String to a native C string that can be used for
 396 // native OS calls.
 397 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
 398   typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
 399   static to_platform_string_fn_t _to_platform_string_fn = NULL;
 400 
 401   if (_to_platform_string_fn == NULL) {
 402     void *lib_handle = os::native_java_library();
 403     _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
 404     if (_to_platform_string_fn == NULL) {
 405       fatal("GetStringPlatformChars missing");
 406     }
 407   }
 408 
 409   char *native_platform_string;
 410   { JavaThread* thread = (JavaThread*)THREAD;
 411     assert(thread->is_Java_thread(), "must be java thread");
 412     JNIEnv *env = thread->jni_environment();
 413     jstring js = (jstring) JNIHandles::make_local(env, java_string());
 414     bool is_copy;
 415     HandleMark hm(thread);
 416     ThreadToNativeFromVM ttn(thread);
 417     native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
 418     assert(is_copy == JNI_TRUE, "is_copy value changed");
 419     JNIHandles::destroy_local(js);
 420   }
 421   return native_platform_string;
 422 }
 423 
 424 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
 425   oop          obj    = java_string();
 426   // Typical usage is to convert all '/' to '.' in string.
 427   typeArrayOop value  = java_lang_String::value(obj);
 428   int          length = java_lang_String::length(obj, value);
 429   bool      is_latin1 = java_lang_String::is_latin1(obj);
 430 
 431   // First check if any from_char exist
 432   int index; // Declared outside, used later
 433   for (index = 0; index < length; index++) {
 434     jchar c = !is_latin1 ? value->char_at(index) :
 435                   ((jchar) value->byte_at(index)) & 0xff;
 436     if (c == from_char) {
 437       break;
 438     }
 439   }
 440   if (index == length) {
 441     // No from_char, so do not copy.
 442     return java_string;
 443   }
 444 
 445   // Check if result string will be latin1
 446   bool to_is_latin1 = false;
 447 
 448   // Replacement char must be latin1
 449   if (CompactStrings && UNICODE::is_latin1(to_char)) {
 450     if (is_latin1) {
 451       // Source string is latin1 as well
 452       to_is_latin1 = true;
 453     } else if (!UNICODE::is_latin1(from_char)) {
 454       // We are replacing an UTF16 char. Scan string to
 455       // check if result can be latin1 encoded.
 456       to_is_latin1 = true;
 457       for (index = 0; index < length; index++) {
 458         jchar c = value->char_at(index);
 459         if (c != from_char && !UNICODE::is_latin1(c)) {
 460           to_is_latin1 = false;
 461           break;
 462         }
 463       }
 464     }
 465   }
 466 
 467   // Create new UNICODE (or byte) buffer. Must handlize value because GC
 468   // may happen during String and char array creation.
 469   typeArrayHandle h_value(THREAD, value);
 470   Handle string = basic_create(length, to_is_latin1, CHECK_NH);
 471   typeArrayOop from_buffer = h_value();
 472   typeArrayOop to_buffer = java_lang_String::value(string());
 473 
 474   // Copy contents
 475   for (index = 0; index < length; index++) {
 476     jchar c = (!is_latin1) ? from_buffer->char_at(index) :
 477                     ((jchar) from_buffer->byte_at(index)) & 0xff;
 478     if (c == from_char) {
 479       c = to_char;
 480     }
 481     if (!to_is_latin1) {
 482       to_buffer->char_at_put(index, c);
 483     } else {
 484       to_buffer->byte_at_put(index, (jbyte) c);
 485     }
 486   }
 487   return string;
 488 }
 489 
 490 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
 491   typeArrayOop value  = java_lang_String::value(java_string);
 492                length = java_lang_String::length(java_string, value);
 493   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 494 
 495   jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
 496   if (result != NULL) {
 497     if (!is_latin1) {
 498       for (int index = 0; index < length; index++) {
 499         result[index] = value->char_at(index);
 500       }
 501     } else {
 502       for (int index = 0; index < length; index++) {
 503         result[index] = ((jchar) value->byte_at(index)) & 0xff;
 504       }
 505     }
 506   } else {
 507     THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
 508   }
 509   return result;
 510 }
 511 
 512 unsigned int java_lang_String::hash_code(oop java_string) {
 513   // The hash and hashIsZero fields are subject to a benign data race,
 514   // making it crucial to ensure that any observable result of the
 515   // calculation in this method stays correct under any possible read of
 516   // these fields. Necessary restrictions to allow this to be correct
 517   // without explicit memory fences or similar concurrency primitives is
 518   // that we can ever only write to one of these two fields for a given
 519   // String instance, and that the computation is idempotent and derived
 520   // from immutable state
 521   assert(initialized && (hash_offset > 0) && (hashIsZero_offset > 0), "Must be initialized");
 522   if (java_lang_String::hash_is_set(java_string)) {
 523     return java_string->int_field(hash_offset);
 524   }
 525 
 526   typeArrayOop value = java_lang_String::value(java_string);
 527   int         length = java_lang_String::length(java_string, value);
 528   bool     is_latin1 = java_lang_String::is_latin1(java_string);
 529 
 530   unsigned int hash = 0;
 531   if (length > 0) {
 532     if (is_latin1) {
 533       hash = java_lang_String::hash_code(value->byte_at_addr(0), length);
 534     } else {
 535       hash = java_lang_String::hash_code(value->char_at_addr(0), length);
 536     }
 537   }
 538 
 539   if (hash != 0) {
 540     java_string->int_field_put(hash_offset, hash);
 541   } else {
 542     java_string->bool_field_put(hashIsZero_offset, true);
 543   }
 544   return hash;
 545 }
 546 
 547 char* java_lang_String::as_quoted_ascii(oop java_string) {
 548   typeArrayOop value  = java_lang_String::value(java_string);
 549   int          length = java_lang_String::length(java_string, value);
 550   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 551 
 552   if (length == 0) return NULL;
 553 
 554   char* result;
 555   int result_length;
 556   if (!is_latin1) {
 557     jchar* base = value->char_at_addr(0);
 558     result_length = UNICODE::quoted_ascii_length(base, length) + 1;
 559     result = NEW_RESOURCE_ARRAY(char, result_length);
 560     UNICODE::as_quoted_ascii(base, length, result, result_length);
 561   } else {
 562     jbyte* base = value->byte_at_addr(0);
 563     result_length = UNICODE::quoted_ascii_length(base, length) + 1;
 564     result = NEW_RESOURCE_ARRAY(char, result_length);
 565     UNICODE::as_quoted_ascii(base, length, result, result_length);
 566   }
 567   assert(result_length >= length + 1, "must not be shorter");
 568   assert(result_length == (int)strlen(result) + 1, "must match");
 569   return result;
 570 }
 571 
 572 Symbol* java_lang_String::as_symbol(oop java_string) {
 573   typeArrayOop value  = java_lang_String::value(java_string);
 574   int          length = java_lang_String::length(java_string, value);
 575   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 576   if (!is_latin1) {
 577     jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
 578     Symbol* sym = SymbolTable::new_symbol(base, length);
 579     return sym;
 580   } else {
 581     ResourceMark rm;
 582     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 583     const char* base = UNICODE::as_utf8(position, length);
 584     Symbol* sym = SymbolTable::new_symbol(base, length);
 585     return sym;
 586   }
 587 }
 588 
 589 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
 590   typeArrayOop value  = java_lang_String::value(java_string);
 591   int          length = java_lang_String::length(java_string, value);
 592   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 593   if (!is_latin1) {
 594     jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
 595     return SymbolTable::probe_unicode(base, length);
 596   } else {
 597     ResourceMark rm;
 598     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 599     const char* base = UNICODE::as_utf8(position, length);
 600     return SymbolTable::probe(base, length);
 601   }
 602 }
 603 
 604 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) {
 605   assert(value_equals(value, java_lang_String::value(java_string)),
 606          "value must be same as java_lang_String::value(java_string)");
 607   int length = java_lang_String::length(java_string, value);
 608   if (length == 0) {
 609     return 0;
 610   }
 611   if (!java_lang_String::is_latin1(java_string)) {
 612     return UNICODE::utf8_length(value->char_at_addr(0), length);
 613   } else {
 614     return UNICODE::utf8_length(value->byte_at_addr(0), length);
 615   }
 616 }
 617 
 618 int java_lang_String::utf8_length(oop java_string) {
 619   typeArrayOop value = java_lang_String::value(java_string);
 620   return utf8_length(java_string, value);
 621 }
 622 
 623 char* java_lang_String::as_utf8_string(oop java_string) {
 624   typeArrayOop value  = java_lang_String::value(java_string);
 625   int          length = java_lang_String::length(java_string, value);
 626   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 627   if (!is_latin1) {
 628     jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
 629     return UNICODE::as_utf8(position, length);
 630   } else {
 631     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 632     return UNICODE::as_utf8(position, length);
 633   }
 634 }
 635 
 636 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) {
 637   assert(value_equals(value, java_lang_String::value(java_string)),
 638          "value must be same as java_lang_String::value(java_string)");
 639   int     length = java_lang_String::length(java_string, value);
 640   bool is_latin1 = java_lang_String::is_latin1(java_string);
 641   if (!is_latin1) {
 642     jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
 643     return UNICODE::as_utf8(position, length, buf, buflen);
 644   } else {
 645     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 646     return UNICODE::as_utf8(position, length, buf, buflen);
 647   }
 648 }
 649 
 650 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
 651   typeArrayOop value = java_lang_String::value(java_string);
 652   return as_utf8_string(java_string, value, buf, buflen);
 653 }
 654 
 655 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
 656   typeArrayOop value  = java_lang_String::value(java_string);
 657   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 658   assert(start + len <= java_lang_String::length(java_string), "just checking");
 659   if (!is_latin1) {
 660     jchar* position = value->char_at_addr(start);
 661     return UNICODE::as_utf8(position, len);
 662   } else {
 663     jbyte* position = value->byte_at_addr(start);
 664     return UNICODE::as_utf8(position, len);
 665   }
 666 }
 667 
 668 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) {
 669   assert(value_equals(value, java_lang_String::value(java_string)),
 670          "value must be same as java_lang_String::value(java_string)");
 671   assert(start + len <= java_lang_String::length(java_string), "just checking");
 672   bool is_latin1 = java_lang_String::is_latin1(java_string);
 673   if (!is_latin1) {
 674     jchar* position = value->char_at_addr(start);
 675     return UNICODE::as_utf8(position, len, buf, buflen);
 676   } else {
 677     jbyte* position = value->byte_at_addr(start);
 678     return UNICODE::as_utf8(position, len, buf, buflen);
 679   }
 680 }
 681 
 682 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
 683   assert(java_string->klass() == SystemDictionary::String_klass(),
 684          "must be java_string");
 685   typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
 686   int length = java_lang_String::length(java_string, value);
 687   if (length != len) {
 688     return false;
 689   }
 690   bool is_latin1 = java_lang_String::is_latin1(java_string);
 691   if (!is_latin1) {
 692     for (int i = 0; i < len; i++) {
 693       if (value->char_at(i) != chars[i]) {
 694         return false;
 695       }
 696     }
 697   } else {
 698     for (int i = 0; i < len; i++) {
 699       if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
 700         return false;
 701       }
 702     }
 703   }
 704   return true;
 705 }
 706 
 707 bool java_lang_String::equals(oop str1, oop str2) {
 708   assert(str1->klass() == SystemDictionary::String_klass(),
 709          "must be java String");
 710   assert(str2->klass() == SystemDictionary::String_klass(),
 711          "must be java String");
 712   typeArrayOop value1    = java_lang_String::value_no_keepalive(str1);
 713   bool         is_latin1 = java_lang_String::is_latin1(str1);
 714   typeArrayOop value2    = java_lang_String::value_no_keepalive(str2);
 715   bool         is_latin2 = java_lang_String::is_latin1(str2);
 716 
 717   if (is_latin1 != is_latin2) {
 718     // Strings with different coders are never equal.
 719     return false;
 720   }
 721   return value_equals(value1, value2);
 722 }
 723 
 724 void java_lang_String::print(oop java_string, outputStream* st) {
 725   assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
 726   typeArrayOop value  = java_lang_String::value_no_keepalive(java_string);
 727 
 728   if (value == NULL) {
 729     // This can happen if, e.g., printing a String
 730     // object before its initializer has been called
 731     st->print("NULL");
 732     return;
 733   }
 734 
 735   int length = java_lang_String::length(java_string, value);
 736   bool is_latin1 = java_lang_String::is_latin1(java_string);
 737 
 738   st->print("\"");
 739   for (int index = 0; index < length; index++) {
 740     st->print("%c", (!is_latin1) ?  value->char_at(index) :
 741                            ((jchar) value->byte_at(index)) & 0xff );
 742   }
 743   st->print("\"");
 744 }
 745 
 746 
 747 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
 748   assert(mirror.not_null() && fd->is_static(), "just checking");
 749   if (fd->has_initial_value()) {
 750     BasicType t = fd->field_type();
 751     switch (t) {
 752       case T_BYTE:
 753         mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
 754               break;
 755       case T_BOOLEAN:
 756         mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
 757               break;
 758       case T_CHAR:
 759         mirror()->char_field_put(fd->offset(), fd->int_initial_value());
 760               break;
 761       case T_SHORT:
 762         mirror()->short_field_put(fd->offset(), fd->int_initial_value());
 763               break;
 764       case T_INT:
 765         mirror()->int_field_put(fd->offset(), fd->int_initial_value());
 766         break;
 767       case T_FLOAT:
 768         mirror()->float_field_put(fd->offset(), fd->float_initial_value());
 769         break;
 770       case T_DOUBLE:
 771         mirror()->double_field_put(fd->offset(), fd->double_initial_value());
 772         break;
 773       case T_LONG:
 774         mirror()->long_field_put(fd->offset(), fd->long_initial_value());
 775         break;
 776       case T_OBJECT:
 777         {
 778           assert(fd->signature() == vmSymbols::string_signature(),
 779                  "just checking");
 780           if (DumpSharedSpaces && HeapShared::is_archived_object(mirror())) {
 781             // Archive the String field and update the pointer.
 782             oop s = mirror()->obj_field(fd->offset());
 783             oop archived_s = StringTable::create_archived_string(s, CHECK);
 784             mirror()->obj_field_put(fd->offset(), archived_s);
 785           } else {
 786             oop string = fd->string_initial_value(CHECK);
 787             mirror()->obj_field_put(fd->offset(), string);
 788           }
 789         }
 790         break;
 791       default:
 792         THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
 793                   "Illegal ConstantValue attribute in class file");
 794     }
 795   }
 796 }
 797 
 798 
 799 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
 800   assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
 801 
 802   // If the offset was read from the shared archive, it was fixed up already
 803   if (!k->is_shared()) {
 804     if (k->is_instance_klass()) {
 805       // During bootstrap, java.lang.Class wasn't loaded so static field
 806       // offsets were computed without the size added it.  Go back and
 807       // update all the static field offsets to included the size.
 808       for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
 809         if (fs.access_flags().is_static()) {
 810           int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
 811           fs.set_offset(real_offset);
 812         }
 813       }
 814     }
 815   }
 816 
 817   if (k->is_shared() && k->has_raw_archived_mirror()) {
 818     if (HeapShared::open_archive_heap_region_mapped()) {
 819       bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
 820       assert(present, "Missing archived mirror for %s", k->external_name());
 821       return;
 822     } else {
 823       k->set_java_mirror_handle(NULL);
 824       k->clear_has_raw_archived_mirror();
 825     }
 826   }
 827   create_mirror(k, Handle(), Handle(), Handle(), CHECK);
 828 }
 829 
 830 void java_lang_Class::initialize_mirror_fields(Klass* k,
 831                                                Handle mirror,
 832                                                Handle protection_domain,
 833                                                TRAPS) {
 834   // Allocate a simple java object for a lock.
 835   // This needs to be a java object because during class initialization
 836   // it can be held across a java call.
 837   typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
 838   set_init_lock(mirror(), r);
 839 
 840   // Set protection domain also
 841   set_protection_domain(mirror(), protection_domain());
 842 
 843   // Initialize static fields
 844   InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
 845 }
 846 
 847 // Set the java.lang.Module module field in the java_lang_Class mirror
 848 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
 849   if (module.is_null()) {
 850     // During startup, the module may be NULL only if java.base has not been defined yet.
 851     // Put the class on the fixup_module_list to patch later when the java.lang.Module
 852     // for java.base is known. But note that since we captured the NULL module another
 853     // thread may have completed that initialization.
 854 
 855     bool javabase_was_defined = false;
 856     {
 857       MutexLocker m1(Module_lock, THREAD);
 858       // Keep list of classes needing java.base module fixup
 859       if (!ModuleEntryTable::javabase_defined()) {
 860         assert(k->java_mirror() != NULL, "Class's mirror is null");
 861         k->class_loader_data()->inc_keep_alive();
 862         assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
 863         fixup_module_field_list()->push(k);
 864       } else {
 865         javabase_was_defined = true;
 866       }
 867     }
 868 
 869     // If java.base was already defined then patch this particular class with java.base.
 870     if (javabase_was_defined) {
 871       ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
 872       assert(javabase_entry != NULL && javabase_entry->module() != NULL,
 873              "Setting class module field, " JAVA_BASE_NAME " should be defined");
 874       Handle javabase_handle(THREAD, javabase_entry->module());
 875       set_module(mirror(), javabase_handle());
 876     }
 877   } else {
 878     assert(Universe::is_module_initialized() ||
 879            (ModuleEntryTable::javabase_defined() &&
 880             (oopDesc::equals(module(), ModuleEntryTable::javabase_moduleEntry()->module()))),
 881            "Incorrect java.lang.Module specification while creating mirror");
 882     set_module(mirror(), module());
 883   }
 884 }
 885 
 886 // Statically allocate fixup lists because they always get created.
 887 void java_lang_Class::allocate_fixup_lists() {
 888   GrowableArray<Klass*>* mirror_list =
 889     new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
 890   set_fixup_mirror_list(mirror_list);
 891 
 892   GrowableArray<Klass*>* module_list =
 893     new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
 894   set_fixup_module_field_list(module_list);
 895 }
 896 
 897 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
 898                                     Handle module, Handle protection_domain, TRAPS) {
 899   assert(k != NULL, "Use create_basic_type_mirror for primitive types");
 900   assert(k->java_mirror() == NULL, "should only assign mirror once");
 901 
 902   // Use this moment of initialization to cache modifier_flags also,
 903   // to support Class.getModifiers().  Instance classes recalculate
 904   // the cached flags after the class file is parsed, but before the
 905   // class is put into the system dictionary.
 906   int computed_modifiers = k->compute_modifier_flags(CHECK);
 907   k->set_modifier_flags(computed_modifiers);
 908   // Class_klass has to be loaded because it is used to allocate
 909   // the mirror.
 910   if (SystemDictionary::Class_klass_loaded()) {
 911     // Allocate mirror (java.lang.Class instance)
 912     oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
 913     Handle mirror(THREAD, mirror_oop);
 914     Handle comp_mirror;
 915 
 916     // Setup indirection from mirror->klass
 917     java_lang_Class::set_klass(mirror(), k);
 918 
 919     InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
 920     assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
 921 
 922     java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
 923 
 924     // It might also have a component mirror.  This mirror must already exist.
 925     if (k->is_array_klass()) {
 926       if (k->is_typeArray_klass()) {
 927         BasicType type = TypeArrayKlass::cast(k)->element_type();
 928         comp_mirror = Handle(THREAD, Universe::java_mirror(type));
 929       } else {
 930         assert(k->is_objArray_klass(), "Must be");
 931         Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
 932         assert(element_klass != NULL, "Must have an element klass");
 933         comp_mirror = Handle(THREAD, element_klass->java_mirror());
 934       }
 935       assert(comp_mirror() != NULL, "must have a mirror");
 936 
 937       // Two-way link between the array klass and its component mirror:
 938       // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
 939       set_component_mirror(mirror(), comp_mirror());
 940       // See below for ordering dependencies between field array_klass in component mirror
 941       // and java_mirror in this klass.
 942     } else {
 943       assert(k->is_instance_klass(), "Must be");
 944 
 945       initialize_mirror_fields(k, mirror, protection_domain, THREAD);
 946       if (HAS_PENDING_EXCEPTION) {
 947         // If any of the fields throws an exception like OOM remove the klass field
 948         // from the mirror so GC doesn't follow it after the klass has been deallocated.
 949         // This mirror looks like a primitive type, which logically it is because it
 950         // it represents no class.
 951         java_lang_Class::set_klass(mirror(), NULL);
 952         return;
 953       }
 954     }
 955 
 956     // set the classLoader field in the java_lang_Class instance
 957     assert(oopDesc::equals(class_loader(), k->class_loader()), "should be same");
 958     set_class_loader(mirror(), class_loader());
 959 
 960     // Setup indirection from klass->mirror
 961     // after any exceptions can happen during allocations.
 962     k->set_java_mirror(mirror);
 963 
 964     // Set the module field in the java_lang_Class instance.  This must be done
 965     // after the mirror is set.
 966     set_mirror_module_field(k, mirror, module, THREAD);
 967 
 968     if (comp_mirror() != NULL) {
 969       // Set after k->java_mirror() is published, because compiled code running
 970       // concurrently doesn't expect a k to have a null java_mirror.
 971       release_set_array_klass(comp_mirror(), k);
 972     }
 973   } else {
 974     assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
 975     fixup_mirror_list()->push(k);
 976   }
 977 }
 978 
 979 #if INCLUDE_CDS_JAVA_HEAP
 980 // Clears mirror fields. Static final fields with initial values are reloaded
 981 // from constant pool. The object identity hash is in the object header and is
 982 // not affected.
 983 class ResetMirrorField: public FieldClosure {
 984  private:
 985   Handle _m;
 986 
 987  public:
 988   ResetMirrorField(Handle mirror) : _m(mirror) {}
 989 
 990   void do_field(fieldDescriptor* fd) {
 991     assert(DumpSharedSpaces, "dump time only");
 992     assert(_m.not_null(), "Mirror cannot be NULL");
 993 
 994     if (fd->is_static() && fd->has_initial_value()) {
 995       initialize_static_field(fd, _m, Thread::current());
 996       return;
 997     }
 998 
 999     BasicType ft = fd->field_type();
1000     switch (ft) {
1001       case T_BYTE:
1002         _m()->byte_field_put(fd->offset(), 0);
1003         break;
1004       case T_CHAR:
1005         _m()->char_field_put(fd->offset(), 0);
1006         break;
1007       case T_DOUBLE:
1008         _m()->double_field_put(fd->offset(), 0);
1009         break;
1010       case T_FLOAT:
1011         _m()->float_field_put(fd->offset(), 0);
1012         break;
1013       case T_INT:
1014         _m()->int_field_put(fd->offset(), 0);
1015         break;
1016       case T_LONG:
1017         _m()->long_field_put(fd->offset(), 0);
1018         break;
1019       case T_SHORT:
1020         _m()->short_field_put(fd->offset(), 0);
1021         break;
1022       case T_BOOLEAN:
1023         _m()->bool_field_put(fd->offset(), false);
1024         break;
1025       case T_ARRAY:
1026       case T_OBJECT: {
1027         // It might be useful to cache the String field, but
1028         // for now just clear out any reference field
1029         oop o = _m()->obj_field(fd->offset());
1030         _m()->obj_field_put(fd->offset(), NULL);
1031         break;
1032       }
1033       default:
1034         ShouldNotReachHere();
1035         break;
1036      }
1037   }
1038 };
1039 
1040 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1041   assert(HeapShared::is_heap_object_archiving_allowed(),
1042          "HeapShared::is_heap_object_archiving_allowed() must be true");
1043 
1044   for (int t = 0; t <= T_VOID; t++) {
1045     oop m = Universe::_mirrors[t];
1046     if (m != NULL) {
1047       // Update the field at _array_klass_offset to point to the relocated array klass.
1048       oop archived_m = HeapShared::archive_heap_object(m, THREAD);
1049       assert(archived_m != NULL, "sanity");
1050       Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1051       assert(ak != NULL || t == T_VOID, "should not be NULL");
1052       if (ak != NULL) {
1053         Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak);
1054         archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1055       }
1056 
1057       // Clear the fields. Just to be safe
1058       Klass *k = m->klass();
1059       Handle archived_mirror_h(THREAD, archived_m);
1060       ResetMirrorField reset(archived_mirror_h);
1061       InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1062 
1063       log_trace(cds, heap, mirror)(
1064         "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1065         type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1066 
1067       Universe::_mirrors[t] = archived_m;
1068     }
1069   }
1070 
1071   assert(Universe::_mirrors[T_INT] != NULL &&
1072          Universe::_mirrors[T_FLOAT] != NULL &&
1073          Universe::_mirrors[T_DOUBLE] != NULL &&
1074          Universe::_mirrors[T_BYTE] != NULL &&
1075          Universe::_mirrors[T_BOOLEAN] != NULL &&
1076          Universe::_mirrors[T_CHAR] != NULL &&
1077          Universe::_mirrors[T_LONG] != NULL &&
1078          Universe::_mirrors[T_SHORT] != NULL &&
1079          Universe::_mirrors[T_VOID] != NULL, "sanity");
1080 
1081   Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1082   Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1083   Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1084   Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1085   Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1086   Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1087   Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1088   Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1089   Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1090 }
1091 
1092 //
1093 // After the mirror object is successfully archived, the archived
1094 // klass is set with _has_archived_raw_mirror flag.
1095 //
1096 // The _has_archived_raw_mirror flag is cleared at runtime when the
1097 // archived mirror is restored. If archived java heap data cannot
1098 // be used at runtime, new mirror object is created for the shared
1099 // class. The _has_archived_raw_mirror is cleared also during the process.
1100 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1101   assert(HeapShared::is_heap_object_archiving_allowed(),
1102          "HeapShared::is_heap_object_archiving_allowed() must be true");
1103 
1104   // Mirror is already archived
1105   if (k->has_raw_archived_mirror()) {
1106     assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1107     return k->archived_java_mirror_raw();
1108   }
1109 
1110   // No mirror
1111   oop mirror = k->java_mirror();
1112   if (mirror == NULL) {
1113     return NULL;
1114   }
1115 
1116   if (k->is_instance_klass()) {
1117     InstanceKlass *ik = InstanceKlass::cast(k);
1118     assert(ik->signers() == NULL, "class with signer should have been excluded");
1119 
1120     if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1121           ik->is_shared_app_class())) {
1122       // Archiving mirror for classes from non-builtin loaders is not
1123       // supported. Clear the _java_mirror within the archived class.
1124       k->set_java_mirror_handle(NULL);
1125       return NULL;
1126     }
1127   }
1128 
1129   // Now start archiving the mirror object
1130   oop archived_mirror = HeapShared::archive_heap_object(mirror, THREAD);
1131   if (archived_mirror == NULL) {
1132     return NULL;
1133   }
1134 
1135   archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1136   if (archived_mirror == NULL) {
1137     return NULL;
1138   }
1139 
1140   k->set_archived_java_mirror_raw(archived_mirror);
1141 
1142   k->set_has_raw_archived_mirror();
1143 
1144   ResourceMark rm;
1145   log_trace(cds, heap, mirror)(
1146     "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1147     k->external_name(), p2i(mirror), p2i(archived_mirror));
1148 
1149   return archived_mirror;
1150 }
1151 
1152 // The process is based on create_mirror().
1153 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1154                                              oop archived_mirror,
1155                                              Thread *THREAD) {
1156   // Clear nonstatic fields in archived mirror. Some of the fields will be set
1157   // to archived metadata and objects below.
1158   Klass *c = archived_mirror->klass();
1159   Handle archived_mirror_h(THREAD, archived_mirror);
1160   ResetMirrorField reset(archived_mirror_h);
1161   InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1162 
1163   if (k->is_array_klass()) {
1164     oop archived_comp_mirror;
1165     if (k->is_typeArray_klass()) {
1166       // The primitive type mirrors are already archived. Get the archived mirror.
1167       oop comp_mirror = java_lang_Class::component_mirror(mirror);
1168       archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror);
1169       assert(archived_comp_mirror != NULL, "Must be");
1170     } else {
1171       assert(k->is_objArray_klass(), "Must be");
1172       Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1173       assert(element_klass != NULL, "Must have an element klass");
1174       archived_comp_mirror = archive_mirror(element_klass, THREAD);
1175       if (archived_comp_mirror == NULL) {
1176         return NULL;
1177       }
1178     }
1179     java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1180   } else {
1181     assert(k->is_instance_klass(), "Must be");
1182 
1183     // Reset local static fields in the mirror
1184     InstanceKlass::cast(k)->do_local_static_fields(&reset);
1185 
1186     java_lang_Class:set_init_lock(archived_mirror, NULL);
1187 
1188     set_protection_domain(archived_mirror, NULL);
1189   }
1190 
1191   // clear class loader and mirror_module_field
1192   set_class_loader(archived_mirror, NULL);
1193   set_module(archived_mirror, NULL);
1194 
1195   // The archived mirror's field at _klass_offset is still pointing to the original
1196   // klass. Updated the field in the archived mirror to point to the relocated
1197   // klass in the archive.
1198   Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror));
1199   log_debug(cds, heap, mirror)(
1200     "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1201     p2i(as_Klass(mirror)), p2i(reloc_k));
1202   archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1203 
1204   // The field at _array_klass_offset is pointing to the original one dimension
1205   // higher array klass if exists. Relocate the pointer.
1206   Klass *arr = array_klass_acquire(mirror);
1207   if (arr != NULL) {
1208     Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr);
1209     log_debug(cds, heap, mirror)(
1210       "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1211       p2i(arr), p2i(reloc_arr));
1212     archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1213   }
1214   return archived_mirror;
1215 }
1216 
1217 // Returns true if the mirror is updated, false if no archived mirror
1218 // data is present. After the archived mirror object is restored, the
1219 // shared klass' _has_raw_archived_mirror flag is cleared.
1220 bool java_lang_Class::restore_archived_mirror(Klass *k,
1221                                               Handle class_loader, Handle module,
1222                                               Handle protection_domain, TRAPS) {
1223   // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1224   // see more details in SystemDictionary::resolve_well_known_classes().
1225   if (!SystemDictionary::Class_klass_loaded()) {
1226     assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1227     fixup_mirror_list()->push(k);
1228     return true;
1229   }
1230 
1231   oop m = HeapShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1232 
1233   if (m == NULL) {
1234     return false;
1235   }
1236 
1237   log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1238 
1239   // mirror is archived, restore
1240   assert(HeapShared::is_archived_object(m), "must be archived mirror object");
1241   Handle mirror(THREAD, m);
1242 
1243   if (!k->is_array_klass()) {
1244     // - local static final fields with initial values were initialized at dump time
1245 
1246     // create the init_lock
1247     typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1248     set_init_lock(mirror(), r);
1249 
1250     if (protection_domain.not_null()) {
1251       set_protection_domain(mirror(), protection_domain());
1252     }
1253   }
1254 
1255   assert(class_loader() == k->class_loader(), "should be same");
1256   if (class_loader.not_null()) {
1257     set_class_loader(mirror(), class_loader());
1258   }
1259 
1260   k->set_java_mirror(mirror);
1261   k->clear_has_raw_archived_mirror();
1262 
1263   set_mirror_module_field(k, mirror, module, THREAD);
1264 
1265   ResourceMark rm;
1266   log_trace(cds, heap, mirror)(
1267     "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1268 
1269   return true;
1270 }
1271 #endif // INCLUDE_CDS_JAVA_HEAP
1272 
1273 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1274   assert(_module_offset != 0, "must have been computed already");
1275   java_lang_Class::set_module(k->java_mirror(), module());
1276 }
1277 
1278 int  java_lang_Class::oop_size(oop java_class) {
1279   assert(_oop_size_offset != 0, "must be set");
1280   int size = java_class->int_field(_oop_size_offset);
1281   assert(size > 0, "Oop size must be greater than zero, not %d", size);
1282   return size;
1283 }
1284 
1285 
1286 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1287   assert(_oop_size_offset != 0, "must be set");
1288   assert(size > 0, "Oop size must be greater than zero, not %d", size);
1289   *(int*)(((char*)java_class) + _oop_size_offset) = size;
1290 }
1291 
1292 int  java_lang_Class::static_oop_field_count(oop java_class) {
1293   assert(_static_oop_field_count_offset != 0, "must be set");
1294   return java_class->int_field(_static_oop_field_count_offset);
1295 }
1296 
1297 int  java_lang_Class::static_oop_field_count_raw(oop java_class) {
1298   assert(_static_oop_field_count_offset != 0, "must be set");
1299   return java_class->int_field_raw(_static_oop_field_count_offset);
1300 }
1301 
1302 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1303   assert(_static_oop_field_count_offset != 0, "must be set");
1304   java_class->int_field_put(_static_oop_field_count_offset, size);
1305 }
1306 
1307 oop java_lang_Class::protection_domain(oop java_class) {
1308   assert(_protection_domain_offset != 0, "must be set");
1309   return java_class->obj_field(_protection_domain_offset);
1310 }
1311 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1312   assert(_protection_domain_offset != 0, "must be set");
1313   java_class->obj_field_put(_protection_domain_offset, pd);
1314 }
1315 
1316 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1317   assert(_component_mirror_offset != 0, "must be set");
1318     java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1319   }
1320 oop java_lang_Class::component_mirror(oop java_class) {
1321   assert(_component_mirror_offset != 0, "must be set");
1322   return java_class->obj_field(_component_mirror_offset);
1323 }
1324 
1325 oop java_lang_Class::init_lock(oop java_class) {
1326   assert(_init_lock_offset != 0, "must be set");
1327   return java_class->obj_field(_init_lock_offset);
1328 }
1329 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1330   assert(_init_lock_offset != 0, "must be set");
1331   java_class->obj_field_put(_init_lock_offset, init_lock);
1332 }
1333 
1334 objArrayOop java_lang_Class::signers(oop java_class) {
1335   assert(_signers_offset != 0, "must be set");
1336   return (objArrayOop)java_class->obj_field(_signers_offset);
1337 }
1338 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1339   assert(_signers_offset != 0, "must be set");
1340   java_class->obj_field_put(_signers_offset, (oop)signers);
1341 }
1342 
1343 
1344 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1345   // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
1346   if (_class_loader_offset != 0) {
1347     java_class->obj_field_put(_class_loader_offset, loader);
1348   }
1349 }
1350 
1351 oop java_lang_Class::class_loader(oop java_class) {
1352   assert(_class_loader_offset != 0, "must be set");
1353   return java_class->obj_field(_class_loader_offset);
1354 }
1355 
1356 oop java_lang_Class::module(oop java_class) {
1357   assert(_module_offset != 0, "must be set");
1358   return java_class->obj_field(_module_offset);
1359 }
1360 
1361 void java_lang_Class::set_module(oop java_class, oop module) {
1362   assert(_module_offset != 0, "must be set");
1363   java_class->obj_field_put(_module_offset, module);
1364 }
1365 
1366 oop java_lang_Class::name(Handle java_class, TRAPS) {
1367   assert(_name_offset != 0, "must be set");
1368   oop o = java_class->obj_field(_name_offset);
1369   if (o == NULL) {
1370     o = StringTable::intern(java_lang_Class::as_external_name(java_class()), THREAD);
1371     java_class->obj_field_put(_name_offset, o);
1372   }
1373   return o;
1374 }
1375 
1376 oop java_lang_Class::source_file(oop java_class) {
1377   assert(_source_file_offset != 0, "must be set");
1378   return java_class->obj_field(_source_file_offset);
1379 }
1380 
1381 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1382   assert(_source_file_offset != 0, "must be set");
1383   java_class->obj_field_put(_source_file_offset, source_file);
1384 }
1385 
1386 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1387   // This should be improved by adding a field at the Java level or by
1388   // introducing a new VM klass (see comment in ClassFileParser)
1389   oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
1390   if (type != T_VOID) {
1391     Klass* aklass = Universe::typeArrayKlassObj(type);
1392     assert(aklass != NULL, "correct bootstrap");
1393     release_set_array_klass(java_class, aklass);
1394   }
1395 #ifdef ASSERT
1396   InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1397   assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1398 #endif
1399   return java_class;
1400 }
1401 
1402 
1403 Klass* java_lang_Class::as_Klass(oop java_class) {
1404   //%note memory_2
1405   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1406   Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1407   assert(k == NULL || k->is_klass(), "type check");
1408   return k;
1409 }
1410 
1411 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1412   //%note memory_2
1413   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1414   Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1415   assert(k == NULL || k->is_klass(), "type check");
1416   return k;
1417 }
1418 
1419 
1420 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1421   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1422   java_class->metadata_field_put(_klass_offset, klass);
1423 }
1424 
1425 
1426 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1427   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1428   Symbol* name = NULL;
1429   bool is_instance = false;
1430   if (is_primitive(java_class)) {
1431     name = vmSymbols::type_signature(primitive_type(java_class));
1432   } else {
1433     Klass* k = as_Klass(java_class);
1434     is_instance = k->is_instance_klass();
1435     name = k->name();
1436   }
1437   if (name == NULL) {
1438     st->print("<null>");
1439     return;
1440   }
1441   if (is_instance)  st->print("L");
1442   st->write((char*) name->base(), (int) name->utf8_length());
1443   if (is_instance)  st->print(";");
1444 }
1445 
1446 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1447   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1448   Symbol* name;
1449   if (is_primitive(java_class)) {
1450     name = vmSymbols::type_signature(primitive_type(java_class));
1451     // Because this can create a new symbol, the caller has to decrement
1452     // the refcount, so make adjustment here and below for symbols returned
1453     // that are not created or incremented due to a successful lookup.
1454     name->increment_refcount();
1455   } else {
1456     Klass* k = as_Klass(java_class);
1457     if (!k->is_instance_klass()) {
1458       name = k->name();
1459       name->increment_refcount();
1460     } else {
1461       ResourceMark rm;
1462       const char* sigstr = k->signature_name();
1463       int         siglen = (int) strlen(sigstr);
1464       if (!intern_if_not_found) {
1465         name = SymbolTable::probe(sigstr, siglen);
1466       } else {
1467         name = SymbolTable::new_symbol(sigstr, siglen);
1468       }
1469     }
1470   }
1471   return name;
1472 }
1473 
1474 // Returns the Java name for this Java mirror (Resource allocated)
1475 // See Klass::external_name().
1476 // For primitive type Java mirrors, its type name is returned.
1477 const char* java_lang_Class::as_external_name(oop java_class) {
1478   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1479   const char* name = NULL;
1480   if (is_primitive(java_class)) {
1481     name = type2name(primitive_type(java_class));
1482   } else {
1483     name = as_Klass(java_class)->external_name();
1484   }
1485   if (name == NULL) {
1486     name = "<null>";
1487   }
1488   return name;
1489 }
1490 
1491 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1492   Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1493   assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1494   return k;
1495 }
1496 
1497 
1498 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1499   assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1500   java_class->release_metadata_field_put(_array_klass_offset, klass);
1501 }
1502 
1503 
1504 BasicType java_lang_Class::primitive_type(oop java_class) {
1505   assert(java_lang_Class::is_primitive(java_class), "just checking");
1506   Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1507   BasicType type = T_VOID;
1508   if (ak != NULL) {
1509     // Note: create_basic_type_mirror above initializes ak to a non-null value.
1510     type = ArrayKlass::cast(ak)->element_type();
1511   } else {
1512     assert(oopDesc::equals(java_class, Universe::void_mirror()), "only valid non-array primitive");
1513   }
1514   assert(oopDesc::equals(Universe::java_mirror(type), java_class), "must be consistent");
1515   return type;
1516 }
1517 
1518 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1519   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1520   if (is_primitive(java_class)) {
1521     if (reference_klass != NULL)
1522       (*reference_klass) = NULL;
1523     return primitive_type(java_class);
1524   } else {
1525     if (reference_klass != NULL)
1526       (*reference_klass) = as_Klass(java_class);
1527     return T_OBJECT;
1528   }
1529 }
1530 
1531 
1532 oop java_lang_Class::primitive_mirror(BasicType t) {
1533   oop mirror = Universe::java_mirror(t);
1534   assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1535   assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1536   return mirror;
1537 }
1538 
1539 bool java_lang_Class::offsets_computed = false;
1540 int  java_lang_Class::classRedefinedCount_offset = -1;
1541 
1542 #define CLASS_FIELDS_DO(macro) \
1543   macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature,         false) ; \
1544   macro(_class_loader_offset,       k, "classLoader",         classloader_signature, false); \
1545   macro(_component_mirror_offset,   k, "componentType",       class_signature,       false); \
1546   macro(_module_offset,             k, "module",              module_signature,      false); \
1547   macro(_name_offset,               k, "name",                string_signature,      false); \
1548 
1549 void java_lang_Class::compute_offsets() {
1550   if (offsets_computed) {
1551     return;
1552   }
1553 
1554   offsets_computed = true;
1555 
1556   InstanceKlass* k = SystemDictionary::Class_klass();
1557   CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1558 
1559   // Init lock is a C union with component_mirror.  Only instanceKlass mirrors have
1560   // init_lock and only ArrayKlass mirrors have component_mirror.  Since both are oops
1561   // GC treats them the same.
1562   _init_lock_offset = _component_mirror_offset;
1563 
1564   CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1565 }
1566 
1567 #if INCLUDE_CDS
1568 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1569   f->do_bool(&offsets_computed);
1570   f->do_u4((u4*)&_init_lock_offset);
1571 
1572   CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1573 
1574   CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1575 }
1576 #endif
1577 
1578 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1579   if (classRedefinedCount_offset == -1) {
1580     // If we don't have an offset for it then just return -1 as a marker.
1581     return -1;
1582   }
1583 
1584   return the_class_mirror->int_field(classRedefinedCount_offset);
1585 }
1586 
1587 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1588   if (classRedefinedCount_offset == -1) {
1589     // If we don't have an offset for it then nothing to set.
1590     return;
1591   }
1592 
1593   the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1594 }
1595 
1596 
1597 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1598 //       platform thread structure, and a eetop offset which was used for thread
1599 //       local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1600 //       merged, so in the HotSpot VM we just use the eetop field for the thread
1601 //       instead of the privateInfo_offset.
1602 //
1603 // Note: The stackSize field is only present starting in 1.4.
1604 
1605 int java_lang_Thread::_name_offset = 0;
1606 int java_lang_Thread::_group_offset = 0;
1607 int java_lang_Thread::_contextClassLoader_offset = 0;
1608 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1609 int java_lang_Thread::_priority_offset = 0;
1610 int java_lang_Thread::_eetop_offset = 0;
1611 int java_lang_Thread::_daemon_offset = 0;
1612 int java_lang_Thread::_stillborn_offset = 0;
1613 int java_lang_Thread::_stackSize_offset = 0;
1614 int java_lang_Thread::_tid_offset = 0;
1615 int java_lang_Thread::_thread_status_offset = 0;
1616 int java_lang_Thread::_park_blocker_offset = 0;
1617 
1618 #define THREAD_FIELDS_DO(macro) \
1619   macro(_name_offset,          k, vmSymbols::name_name(), string_signature, false); \
1620   macro(_group_offset,         k, vmSymbols::group_name(), threadgroup_signature, false); \
1621   macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1622   macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1623   macro(_priority_offset,      k, vmSymbols::priority_name(), int_signature, false); \
1624   macro(_daemon_offset,        k, vmSymbols::daemon_name(), bool_signature, false); \
1625   macro(_eetop_offset,         k, "eetop", long_signature, false); \
1626   macro(_stillborn_offset,     k, "stillborn", bool_signature, false); \
1627   macro(_stackSize_offset,     k, "stackSize", long_signature, false); \
1628   macro(_tid_offset,           k, "tid", long_signature, false); \
1629   macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1630   macro(_park_blocker_offset,  k, "parkBlocker", object_signature, false)
1631 
1632 void java_lang_Thread::compute_offsets() {
1633   assert(_group_offset == 0, "offsets should be initialized only once");
1634 
1635   InstanceKlass* k = SystemDictionary::Thread_klass();
1636   THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1637 }
1638 
1639 #if INCLUDE_CDS
1640 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1641   THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1642 }
1643 #endif
1644 
1645 JavaThread* java_lang_Thread::thread(oop java_thread) {
1646   return (JavaThread*)java_thread->address_field(_eetop_offset);
1647 }
1648 
1649 
1650 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1651   java_thread->address_field_put(_eetop_offset, (address)thread);
1652 }
1653 
1654 
1655 oop java_lang_Thread::name(oop java_thread) {
1656   return java_thread->obj_field(_name_offset);
1657 }
1658 
1659 
1660 void java_lang_Thread::set_name(oop java_thread, oop name) {
1661   java_thread->obj_field_put(_name_offset, name);
1662 }
1663 
1664 
1665 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1666   return (ThreadPriority)java_thread->int_field(_priority_offset);
1667 }
1668 
1669 
1670 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1671   java_thread->int_field_put(_priority_offset, priority);
1672 }
1673 
1674 
1675 oop java_lang_Thread::threadGroup(oop java_thread) {
1676   return java_thread->obj_field(_group_offset);
1677 }
1678 
1679 
1680 bool java_lang_Thread::is_stillborn(oop java_thread) {
1681   return java_thread->bool_field(_stillborn_offset) != 0;
1682 }
1683 
1684 
1685 // We never have reason to turn the stillborn bit off
1686 void java_lang_Thread::set_stillborn(oop java_thread) {
1687   java_thread->bool_field_put(_stillborn_offset, true);
1688 }
1689 
1690 
1691 bool java_lang_Thread::is_alive(oop java_thread) {
1692   JavaThread* thr = java_lang_Thread::thread(java_thread);
1693   return (thr != NULL);
1694 }
1695 
1696 
1697 bool java_lang_Thread::is_daemon(oop java_thread) {
1698   return java_thread->bool_field(_daemon_offset) != 0;
1699 }
1700 
1701 
1702 void java_lang_Thread::set_daemon(oop java_thread) {
1703   java_thread->bool_field_put(_daemon_offset, true);
1704 }
1705 
1706 oop java_lang_Thread::context_class_loader(oop java_thread) {
1707   return java_thread->obj_field(_contextClassLoader_offset);
1708 }
1709 
1710 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1711   return java_thread->obj_field(_inheritedAccessControlContext_offset);
1712 }
1713 
1714 
1715 jlong java_lang_Thread::stackSize(oop java_thread) {
1716   return java_thread->long_field(_stackSize_offset);
1717 }
1718 
1719 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1720 void java_lang_Thread::set_thread_status(oop java_thread,
1721                                          java_lang_Thread::ThreadStatus status) {
1722   java_thread->int_field_put(_thread_status_offset, status);
1723 }
1724 
1725 // Read thread status value from threadStatus field in java.lang.Thread java class.
1726 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1727   // Make sure the caller is operating on behalf of the VM or is
1728   // running VM code (state == _thread_in_vm).
1729   assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1730          JavaThread::current()->thread_state() == _thread_in_vm,
1731          "Java Thread is not running in vm");
1732   return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1733 }
1734 
1735 
1736 jlong java_lang_Thread::thread_id(oop java_thread) {
1737   return java_thread->long_field(_tid_offset);
1738 }
1739 
1740 oop java_lang_Thread::park_blocker(oop java_thread) {
1741   return java_thread->obj_field(_park_blocker_offset);
1742 }
1743 
1744 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1745   ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1746   switch (status) {
1747     case NEW                      : return "NEW";
1748     case RUNNABLE                 : return "RUNNABLE";
1749     case SLEEPING                 : return "TIMED_WAITING (sleeping)";
1750     case IN_OBJECT_WAIT           : return "WAITING (on object monitor)";
1751     case IN_OBJECT_WAIT_TIMED     : return "TIMED_WAITING (on object monitor)";
1752     case PARKED                   : return "WAITING (parking)";
1753     case PARKED_TIMED             : return "TIMED_WAITING (parking)";
1754     case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1755     case TERMINATED               : return "TERMINATED";
1756     default                       : return "UNKNOWN";
1757   };
1758 }
1759 int java_lang_ThreadGroup::_parent_offset = 0;
1760 int java_lang_ThreadGroup::_name_offset = 0;
1761 int java_lang_ThreadGroup::_threads_offset = 0;
1762 int java_lang_ThreadGroup::_groups_offset = 0;
1763 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1764 int java_lang_ThreadGroup::_destroyed_offset = 0;
1765 int java_lang_ThreadGroup::_daemon_offset = 0;
1766 int java_lang_ThreadGroup::_nthreads_offset = 0;
1767 int java_lang_ThreadGroup::_ngroups_offset = 0;
1768 
1769 oop  java_lang_ThreadGroup::parent(oop java_thread_group) {
1770   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1771   return java_thread_group->obj_field(_parent_offset);
1772 }
1773 
1774 // ("name as oop" accessor is not necessary)
1775 
1776 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1777   oop name = java_thread_group->obj_field(_name_offset);
1778   // ThreadGroup.name can be null
1779   if (name != NULL) {
1780     return java_lang_String::as_utf8_string(name);
1781   }
1782   return NULL;
1783 }
1784 
1785 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1786   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1787   return java_thread_group->int_field(_nthreads_offset);
1788 }
1789 
1790 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1791   oop threads = java_thread_group->obj_field(_threads_offset);
1792   assert(threads != NULL, "threadgroups should have threads");
1793   assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1794   return objArrayOop(threads);
1795 }
1796 
1797 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1798   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1799   return java_thread_group->int_field(_ngroups_offset);
1800 }
1801 
1802 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1803   oop groups = java_thread_group->obj_field(_groups_offset);
1804   assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1805   return objArrayOop(groups);
1806 }
1807 
1808 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1809   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1810   return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1811 }
1812 
1813 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1814   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1815   return java_thread_group->bool_field(_destroyed_offset) != 0;
1816 }
1817 
1818 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1819   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1820   return java_thread_group->bool_field(_daemon_offset) != 0;
1821 }
1822 
1823 #define THREADGROUP_FIELDS_DO(macro) \
1824   macro(_parent_offset,      k, vmSymbols::parent_name(),      threadgroup_signature,       false); \
1825   macro(_name_offset,        k, vmSymbols::name_name(),        string_signature,            false); \
1826   macro(_threads_offset,     k, vmSymbols::threads_name(),     thread_array_signature,      false); \
1827   macro(_groups_offset,      k, vmSymbols::groups_name(),      threadgroup_array_signature, false); \
1828   macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature,               false); \
1829   macro(_destroyed_offset,   k, vmSymbols::destroyed_name(),   bool_signature,              false); \
1830   macro(_daemon_offset,      k, vmSymbols::daemon_name(),      bool_signature,              false); \
1831   macro(_nthreads_offset,    k, vmSymbols::nthreads_name(),    int_signature,               false); \
1832   macro(_ngroups_offset,     k, vmSymbols::ngroups_name(),     int_signature,               false)
1833 
1834 void java_lang_ThreadGroup::compute_offsets() {
1835   assert(_parent_offset == 0, "offsets should be initialized only once");
1836 
1837   InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1838   THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1839 }
1840 
1841 #if INCLUDE_CDS
1842 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1843   THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1844 }
1845 #endif
1846 
1847 #define THROWABLE_FIELDS_DO(macro) \
1848   macro(backtrace_offset,     k, "backtrace",     object_signature,                  false); \
1849   macro(detailMessage_offset, k, "detailMessage", string_signature,                  false); \
1850   macro(stackTrace_offset,    k, "stackTrace",    java_lang_StackTraceElement_array, false); \
1851   macro(depth_offset,         k, "depth",         int_signature,                     false); \
1852   macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1853 
1854 void java_lang_Throwable::compute_offsets() {
1855   InstanceKlass* k = SystemDictionary::Throwable_klass();
1856   THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1857 }
1858 
1859 #if INCLUDE_CDS
1860 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1861   THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1862 }
1863 #endif
1864 
1865 oop java_lang_Throwable::unassigned_stacktrace() {
1866   InstanceKlass* ik = SystemDictionary::Throwable_klass();
1867   oop base = ik->static_field_base_raw();
1868   return base->obj_field(static_unassigned_stacktrace_offset);
1869 }
1870 
1871 oop java_lang_Throwable::backtrace(oop throwable) {
1872   return throwable->obj_field_acquire(backtrace_offset);
1873 }
1874 
1875 
1876 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1877   throwable->release_obj_field_put(backtrace_offset, value);
1878 }
1879 
1880 int java_lang_Throwable::depth(oop throwable) {
1881   return throwable->int_field(depth_offset);
1882 }
1883 
1884 void java_lang_Throwable::set_depth(oop throwable, int value) {
1885   throwable->int_field_put(depth_offset, value);
1886 }
1887 
1888 oop java_lang_Throwable::message(oop throwable) {
1889   return throwable->obj_field(detailMessage_offset);
1890 }
1891 
1892 
1893 // Return Symbol for detailed_message or NULL
1894 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1895   PRESERVE_EXCEPTION_MARK;  // Keep original exception
1896   oop detailed_message = java_lang_Throwable::message(throwable);
1897   if (detailed_message != NULL) {
1898     return java_lang_String::as_symbol(detailed_message);
1899   }
1900   return NULL;
1901 }
1902 
1903 void java_lang_Throwable::set_message(oop throwable, oop value) {
1904   throwable->obj_field_put(detailMessage_offset, value);
1905 }
1906 
1907 
1908 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1909   throwable->obj_field_put(stackTrace_offset, st_element_array);
1910 }
1911 
1912 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1913   set_stacktrace(throwable, NULL);
1914 }
1915 
1916 
1917 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1918   ResourceMark rm;
1919   Klass* k = throwable->klass();
1920   assert(k != NULL, "just checking");
1921   st->print("%s", k->external_name());
1922   oop msg = message(throwable);
1923   if (msg != NULL) {
1924     st->print(": %s", java_lang_String::as_utf8_string(msg));
1925   }
1926 }
1927 
1928 // After this many redefines, the stack trace is unreliable.
1929 const int MAX_VERSION = USHRT_MAX;
1930 
1931 static inline bool version_matches(Method* method, int version) {
1932   assert(version < MAX_VERSION, "version is too big");
1933   return method != NULL && (method->constants()->version() == version);
1934 }
1935 
1936 
1937 // This class provides a simple wrapper over the internal structure of
1938 // exception backtrace to insulate users of the backtrace from needing
1939 // to know what it looks like.
1940 class BacktraceBuilder: public StackObj {
1941  friend class BacktraceIterator;
1942  private:
1943   Handle          _backtrace;
1944   objArrayOop     _head;
1945   typeArrayOop    _methods;
1946   typeArrayOop    _bcis;
1947   objArrayOop     _mirrors;
1948   typeArrayOop    _names; // needed to insulate method name against redefinition
1949   int             _index;
1950   NoSafepointVerifier _nsv;
1951 
1952   enum {
1953     trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1954     trace_bcis_offset    = java_lang_Throwable::trace_bcis_offset,
1955     trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1956     trace_names_offset   = java_lang_Throwable::trace_names_offset,
1957     trace_next_offset    = java_lang_Throwable::trace_next_offset,
1958     trace_size           = java_lang_Throwable::trace_size,
1959     trace_chunk_size     = java_lang_Throwable::trace_chunk_size
1960   };
1961 
1962   // get info out of chunks
1963   static typeArrayOop get_methods(objArrayHandle chunk) {
1964     typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1965     assert(methods != NULL, "method array should be initialized in backtrace");
1966     return methods;
1967   }
1968   static typeArrayOop get_bcis(objArrayHandle chunk) {
1969     typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1970     assert(bcis != NULL, "bci array should be initialized in backtrace");
1971     return bcis;
1972   }
1973   static objArrayOop get_mirrors(objArrayHandle chunk) {
1974     objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1975     assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1976     return mirrors;
1977   }
1978   static typeArrayOop get_names(objArrayHandle chunk) {
1979     typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
1980     assert(names != NULL, "names array should be initialized in backtrace");
1981     return names;
1982   }
1983 
1984  public:
1985 
1986   // constructor for new backtrace
1987   BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL) {
1988     expand(CHECK);
1989     _backtrace = Handle(THREAD, _head);
1990     _index = 0;
1991   }
1992 
1993   BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
1994     _methods = get_methods(backtrace);
1995     _bcis = get_bcis(backtrace);
1996     _mirrors = get_mirrors(backtrace);
1997     _names = get_names(backtrace);
1998     assert(_methods->length() == _bcis->length() &&
1999            _methods->length() == _mirrors->length() &&
2000            _mirrors->length() == _names->length(),
2001            "method and source information arrays should match");
2002 
2003     // head is the preallocated backtrace
2004     _head = backtrace();
2005     _backtrace = Handle(thread, _head);
2006     _index = 0;
2007   }
2008 
2009   void expand(TRAPS) {
2010     objArrayHandle old_head(THREAD, _head);
2011     PauseNoSafepointVerifier pnsv(&_nsv);
2012 
2013     objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2014     objArrayHandle new_head(THREAD, head);
2015 
2016     typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2017     typeArrayHandle new_methods(THREAD, methods);
2018 
2019     typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2020     typeArrayHandle new_bcis(THREAD, bcis);
2021 
2022     objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2023     objArrayHandle new_mirrors(THREAD, mirrors);
2024 
2025     typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2026     typeArrayHandle new_names(THREAD, names);
2027 
2028     if (!old_head.is_null()) {
2029       old_head->obj_at_put(trace_next_offset, new_head());
2030     }
2031     new_head->obj_at_put(trace_methods_offset, new_methods());
2032     new_head->obj_at_put(trace_bcis_offset, new_bcis());
2033     new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2034     new_head->obj_at_put(trace_names_offset, new_names());
2035 
2036     _head    = new_head();
2037     _methods = new_methods();
2038     _bcis = new_bcis();
2039     _mirrors = new_mirrors();
2040     _names  = new_names();
2041     _index = 0;
2042   }
2043 
2044   oop backtrace() {
2045     return _backtrace();
2046   }
2047 
2048   inline void push(Method* method, int bci, TRAPS) {
2049     // Smear the -1 bci to 0 since the array only holds unsigned
2050     // shorts.  The later line number lookup would just smear the -1
2051     // to a 0 even if it could be recorded.
2052     if (bci == SynchronizationEntryBCI) bci = 0;
2053 
2054     if (_index >= trace_chunk_size) {
2055       methodHandle mhandle(THREAD, method);
2056       expand(CHECK);
2057       method = mhandle();
2058     }
2059 
2060     _methods->ushort_at_put(_index, method->orig_method_idnum());
2061     _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2062 
2063     // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2064     // klass owning the symbols alive so their refcounts aren't decremented.
2065     Symbol* name = method->name();
2066     _names->symbol_at_put(_index, name);
2067 
2068     // We need to save the mirrors in the backtrace to keep the class
2069     // from being unloaded while we still have this stack trace.
2070     assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2071     _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2072     _index++;
2073   }
2074 
2075 };
2076 
2077 struct BacktraceElement : public StackObj {
2078   int _method_id;
2079   int _bci;
2080   int _version;
2081   Symbol* _name;
2082   Handle _mirror;
2083   BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2084                    _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2085 };
2086 
2087 class BacktraceIterator : public StackObj {
2088   int _index;
2089   objArrayHandle  _result;
2090   objArrayHandle  _mirrors;
2091   typeArrayHandle _methods;
2092   typeArrayHandle _bcis;
2093   typeArrayHandle _names;
2094 
2095   void init(objArrayHandle result, Thread* thread) {
2096     // Get method id, bci, version and mirror from chunk
2097     _result = result;
2098     if (_result.not_null()) {
2099       _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2100       _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2101       _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2102       _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2103       _index = 0;
2104     }
2105   }
2106  public:
2107   BacktraceIterator(objArrayHandle result, Thread* thread) {
2108     init(result, thread);
2109     assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2110   }
2111 
2112   BacktraceElement next(Thread* thread) {
2113     BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2114                         _methods->ushort_at(_index),
2115                         Backtrace::version_at(_bcis->int_at(_index)),
2116                         Backtrace::bci_at(_bcis->int_at(_index)),
2117                         _names->symbol_at(_index));
2118     _index++;
2119 
2120     if (_index >= java_lang_Throwable::trace_chunk_size) {
2121       int next_offset = java_lang_Throwable::trace_next_offset;
2122       // Get next chunk
2123       objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2124       init(result, thread);
2125     }
2126     return e;
2127   }
2128 
2129   bool repeat() {
2130     return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2131   }
2132 };
2133 
2134 
2135 // Print stack trace element to resource allocated buffer
2136 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2137                                           int version, int bci, Symbol* name) {
2138   ResourceMark rm;
2139 
2140   // Get strings and string lengths
2141   InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2142   const char* klass_name  = holder->external_name();
2143   int buf_len = (int)strlen(klass_name);
2144 
2145   char* method_name = name->as_C_string();
2146   buf_len += (int)strlen(method_name);
2147 
2148   char* source_file_name = NULL;
2149   Symbol* source = Backtrace::get_source_file_name(holder, version);
2150   if (source != NULL) {
2151     source_file_name = source->as_C_string();
2152     buf_len += (int)strlen(source_file_name);
2153   }
2154 
2155   char *module_name = NULL, *module_version = NULL;
2156   ModuleEntry* module = holder->module();
2157   if (module->is_named()) {
2158     module_name = module->name()->as_C_string();
2159     buf_len += (int)strlen(module_name);
2160     if (module->version() != NULL) {
2161       module_version = module->version()->as_C_string();
2162       buf_len += (int)strlen(module_version);
2163     }
2164   }
2165 
2166   // Allocate temporary buffer with extra space for formatting and line number
2167   char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2168 
2169   // Print stack trace line in buffer
2170   sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2171 
2172   // Print module information
2173   if (module_name != NULL) {
2174     if (module_version != NULL) {
2175       sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2176     } else {
2177       sprintf(buf + (int)strlen(buf), "%s/", module_name);
2178     }
2179   }
2180 
2181   // The method can be NULL if the requested class version is gone
2182   Method* method = holder->method_with_orig_idnum(method_id, version);
2183   if (!version_matches(method, version)) {
2184     strcat(buf, "Redefined)");
2185   } else {
2186     int line_number = Backtrace::get_line_number(method, bci);
2187     if (line_number == -2) {
2188       strcat(buf, "Native Method)");
2189     } else {
2190       if (source_file_name != NULL && (line_number != -1)) {
2191         // Sourcename and linenumber
2192         sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2193       } else if (source_file_name != NULL) {
2194         // Just sourcename
2195         sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2196       } else {
2197         // Neither sourcename nor linenumber
2198         sprintf(buf + (int)strlen(buf), "Unknown Source)");
2199       }
2200       CompiledMethod* nm = method->code();
2201       if (WizardMode && nm != NULL) {
2202         sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2203       }
2204     }
2205   }
2206 
2207   st->print_cr("%s", buf);
2208 }
2209 
2210 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
2211   Handle mirror (Thread::current(),  method->method_holder()->java_mirror());
2212   int method_id = method->orig_method_idnum();
2213   int version = method->constants()->version();
2214   print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2215 }
2216 
2217 /**
2218  * Print the throwable message and its stack trace plus all causes by walking the
2219  * cause chain.  The output looks the same as of Throwable.printStackTrace().
2220  */
2221 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2222   // First, print the message.
2223   print(throwable(), st);
2224   st->cr();
2225 
2226   // Now print the stack trace.
2227   Thread* THREAD = Thread::current();
2228   while (throwable.not_null()) {
2229     objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2230     if (result.is_null()) {
2231       st->print_raw_cr("\t<<no stack trace available>>");
2232       return;
2233     }
2234     BacktraceIterator iter(result, THREAD);
2235 
2236     while (iter.repeat()) {
2237       BacktraceElement bte = iter.next(THREAD);
2238       print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2239     }
2240     {
2241       // Call getCause() which doesn't necessarily return the _cause field.
2242       EXCEPTION_MARK;
2243       JavaValue cause(T_OBJECT);
2244       JavaCalls::call_virtual(&cause,
2245                               throwable,
2246                               throwable->klass(),
2247                               vmSymbols::getCause_name(),
2248                               vmSymbols::void_throwable_signature(),
2249                               THREAD);
2250       // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2251       if (HAS_PENDING_EXCEPTION) {
2252         CLEAR_PENDING_EXCEPTION;
2253         throwable = Handle();
2254       } else {
2255         throwable = Handle(THREAD, (oop) cause.get_jobject());
2256         if (throwable.not_null()) {
2257           st->print("Caused by: ");
2258           print(throwable(), st);
2259           st->cr();
2260         }
2261       }
2262     }
2263   }
2264 }
2265 
2266 /**
2267  * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2268  */
2269 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2270   assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2271   JavaValue result(T_VOID);
2272   JavaCalls::call_virtual(&result,
2273                           throwable,
2274                           SystemDictionary::Throwable_klass(),
2275                           vmSymbols::printStackTrace_name(),
2276                           vmSymbols::void_method_signature(),
2277                           THREAD);
2278 }
2279 
2280 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2281   if (!StackTraceInThrowable) return;
2282   ResourceMark rm(THREAD);
2283 
2284   // Start out by clearing the backtrace for this object, in case the VM
2285   // runs out of memory while allocating the stack trace
2286   set_backtrace(throwable(), NULL);
2287   // Clear lazily constructed Java level stacktrace if refilling occurs
2288   // This is unnecessary in 1.7+ but harmless
2289   clear_stacktrace(throwable());
2290 
2291   int max_depth = MaxJavaStackTraceDepth;
2292   JavaThread* thread = (JavaThread*)THREAD;
2293 
2294   BacktraceBuilder bt(CHECK);
2295 
2296   // If there is no Java frame just return the method that was being called
2297   // with bci 0
2298   if (!thread->has_last_Java_frame()) {
2299     if (max_depth >= 1 && method() != NULL) {
2300       bt.push(method(), 0, CHECK);
2301       log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2302       set_depth(throwable(), 1);
2303       set_backtrace(throwable(), bt.backtrace());
2304     }
2305     return;
2306   }
2307 
2308   // Instead of using vframe directly, this version of fill_in_stack_trace
2309   // basically handles everything by hand. This significantly improved the
2310   // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2311   // See bug 6333838 for  more details.
2312   // The "ASSERT" here is to verify this method generates the exactly same stack
2313   // trace as utilizing vframe.
2314 #ifdef ASSERT
2315   vframeStream st(thread);
2316   methodHandle st_method(THREAD, st.method());
2317 #endif
2318   int total_count = 0;
2319   RegisterMap map(thread, false);
2320   int decode_offset = 0;
2321   CompiledMethod* nm = NULL;
2322   bool skip_fillInStackTrace_check = false;
2323   bool skip_throwableInit_check = false;
2324   bool skip_hidden = !ShowHiddenFrames;
2325 
2326   for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2327     Method* method = NULL;
2328     int bci = 0;
2329 
2330     // Compiled java method case.
2331     if (decode_offset != 0) {
2332       DebugInfoReadStream stream(nm, decode_offset);
2333       decode_offset = stream.read_int();
2334       method = (Method*)nm->metadata_at(stream.read_int());
2335       bci = stream.read_bci();
2336     } else {
2337       if (fr.is_first_frame()) break;
2338       address pc = fr.pc();
2339       if (fr.is_interpreted_frame()) {
2340         address bcp = fr.interpreter_frame_bcp();
2341         method = fr.interpreter_frame_method();
2342         bci =  method->bci_from(bcp);
2343         fr = fr.sender(&map);
2344       } else {
2345         CodeBlob* cb = fr.cb();
2346         // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2347         // but non nmethod
2348         fr = fr.sender(&map);
2349         if (cb == NULL || !cb->is_compiled()) {
2350           continue;
2351         }
2352         nm = cb->as_compiled_method();
2353         if (nm->method()->is_native()) {
2354           method = nm->method();
2355           bci = 0;
2356         } else {
2357           PcDesc* pd = nm->pc_desc_at(pc);
2358           decode_offset = pd->scope_decode_offset();
2359           // if decode_offset is not equal to 0, it will execute the
2360           // "compiled java method case" at the beginning of the loop.
2361           continue;
2362         }
2363       }
2364     }
2365 #ifdef ASSERT
2366     assert(st_method() == method && st.bci() == bci,
2367            "Wrong stack trace");
2368     st.next();
2369     // vframeStream::method isn't GC-safe so store off a copy
2370     // of the Method* in case we GC.
2371     if (!st.at_end()) {
2372       st_method = st.method();
2373     }
2374 #endif
2375 
2376     // the format of the stacktrace will be:
2377     // - 1 or more fillInStackTrace frames for the exception class (skipped)
2378     // - 0 or more <init> methods for the exception class (skipped)
2379     // - rest of the stack
2380 
2381     if (!skip_fillInStackTrace_check) {
2382       if (method->name() == vmSymbols::fillInStackTrace_name() &&
2383           throwable->is_a(method->method_holder())) {
2384         continue;
2385       }
2386       else {
2387         skip_fillInStackTrace_check = true; // gone past them all
2388       }
2389     }
2390     if (!skip_throwableInit_check) {
2391       assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2392 
2393       // skip <init> methods of the exception class and superclasses
2394       // This is simlar to classic VM.
2395       if (method->name() == vmSymbols::object_initializer_name() &&
2396           throwable->is_a(method->method_holder())) {
2397         continue;
2398       } else {
2399         // there are none or we've seen them all - either way stop checking
2400         skip_throwableInit_check = true;
2401       }
2402     }
2403     if (method->is_hidden()) {
2404       if (skip_hidden)  continue;
2405     }
2406     bt.push(method, bci, CHECK);
2407     total_count++;
2408   }
2409 
2410   log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2411 
2412   // Put completed stack trace into throwable object
2413   set_backtrace(throwable(), bt.backtrace());
2414   set_depth(throwable(), total_count);
2415 }
2416 
2417 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2418   // No-op if stack trace is disabled
2419   if (!StackTraceInThrowable) {
2420     return;
2421   }
2422 
2423   // Disable stack traces for some preallocated out of memory errors
2424   if (!Universe::should_fill_in_stack_trace(throwable)) {
2425     return;
2426   }
2427 
2428   PRESERVE_EXCEPTION_MARK;
2429 
2430   JavaThread* thread = JavaThread::active();
2431   fill_in_stack_trace(throwable, method, thread);
2432   // ignore exceptions thrown during stack trace filling
2433   CLEAR_PENDING_EXCEPTION;
2434 }
2435 
2436 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2437   // Allocate stack trace - backtrace is created but not filled in
2438 
2439   // No-op if stack trace is disabled
2440   if (!StackTraceInThrowable) return;
2441   BacktraceBuilder bt(CHECK);   // creates a backtrace
2442   set_backtrace(throwable(), bt.backtrace());
2443 }
2444 
2445 
2446 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2447   // Fill in stack trace into preallocated backtrace (no GC)
2448 
2449   // No-op if stack trace is disabled
2450   if (!StackTraceInThrowable) return;
2451 
2452   assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2453 
2454   JavaThread* THREAD = JavaThread::current();
2455 
2456   objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2457   assert(backtrace.not_null(), "backtrace should have been preallocated");
2458 
2459   ResourceMark rm(THREAD);
2460   vframeStream st(THREAD);
2461 
2462   BacktraceBuilder bt(THREAD, backtrace);
2463 
2464   // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2465   // methods as preallocated errors aren't created by "java" code.
2466 
2467   // fill in as much stack trace as possible
2468   int chunk_count = 0;
2469   for (;!st.at_end(); st.next()) {
2470     bt.push(st.method(), st.bci(), CHECK);
2471     chunk_count++;
2472 
2473     // Bail-out for deep stacks
2474     if (chunk_count >= trace_chunk_size) break;
2475   }
2476   set_depth(throwable(), chunk_count);
2477   log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2478 
2479   // We support the Throwable immutability protocol defined for Java 7.
2480   java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2481   assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2482 }
2483 
2484 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2485                                                    objArrayHandle stack_trace_array_h, TRAPS) {
2486 
2487   if (throwable.is_null() || stack_trace_array_h.is_null()) {
2488     THROW(vmSymbols::java_lang_NullPointerException());
2489   }
2490 
2491   assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2492 
2493   if (stack_trace_array_h->length() != depth(throwable())) {
2494     THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2495   }
2496 
2497   objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2498   BacktraceIterator iter(result, THREAD);
2499 
2500   int index = 0;
2501   while (iter.repeat()) {
2502     BacktraceElement bte = iter.next(THREAD);
2503 
2504     Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2505 
2506     if (stack_trace_element.is_null()) {
2507       THROW(vmSymbols::java_lang_NullPointerException());
2508     }
2509 
2510     InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2511     methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2512 
2513     java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2514                                          method,
2515                                          bte._version,
2516                                          bte._bci,
2517                                          bte._name, CHECK);
2518   }
2519 }
2520 
2521 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2522   // Allocate java.lang.StackTraceElement instance
2523   InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2524   assert(k != NULL, "must be loaded in 1.4+");
2525   if (k->should_be_initialized()) {
2526     k->initialize(CHECK_0);
2527   }
2528 
2529   Handle element = k->allocate_instance_handle(CHECK_0);
2530 
2531   int version = method->constants()->version();
2532   fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
2533   return element();
2534 }
2535 
2536 void java_lang_StackTraceElement::fill_in(Handle element,
2537                                           InstanceKlass* holder, const methodHandle& method,
2538                                           int version, int bci, Symbol* name, TRAPS) {
2539   assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2540 
2541   ResourceMark rm(THREAD);
2542   HandleMark hm(THREAD);
2543 
2544   // Fill in class name
2545   Handle java_class(THREAD, holder->java_mirror());
2546   oop classname = java_lang_Class::name(java_class, CHECK);
2547   java_lang_StackTraceElement::set_declaringClass(element(), classname);
2548   java_lang_StackTraceElement::set_declaringClassObject(element(), java_class());
2549 
2550   oop loader = holder->class_loader();
2551   if (loader != NULL) {
2552     oop loader_name = java_lang_ClassLoader::name(loader);
2553     if (loader_name != NULL)
2554       java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2555   }
2556 
2557   // Fill in method name
2558   oop methodname = StringTable::intern(name, CHECK);
2559   java_lang_StackTraceElement::set_methodName(element(), methodname);
2560 
2561   // Fill in module name and version
2562   ModuleEntry* module = holder->module();
2563   if (module->is_named()) {
2564     oop module_name = StringTable::intern(module->name(), CHECK);
2565     java_lang_StackTraceElement::set_moduleName(element(), module_name);
2566     oop module_version;
2567     if (module->version() != NULL) {
2568       module_version = StringTable::intern(module->version(), CHECK);
2569     } else {
2570       module_version = NULL;
2571     }
2572     java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2573   }
2574 
2575   if (method() == NULL || !version_matches(method(), version)) {
2576     // The method was redefined, accurate line number information isn't available
2577     java_lang_StackTraceElement::set_fileName(element(), NULL);
2578     java_lang_StackTraceElement::set_lineNumber(element(), -1);
2579   } else {
2580     // Fill in source file name and line number.
2581     Symbol* source = Backtrace::get_source_file_name(holder, version);
2582     oop source_file = java_lang_Class::source_file(java_class());
2583     if (source != NULL) {
2584       // Class was not redefined. We can trust its cache if set,
2585       // else we have to initialize it.
2586       if (source_file == NULL) {
2587         source_file = StringTable::intern(source, CHECK);
2588         java_lang_Class::set_source_file(java_class(), source_file);
2589       }
2590     } else {
2591       // Class was redefined. Dump the cache if it was set.
2592       if (source_file != NULL) {
2593         source_file = NULL;
2594         java_lang_Class::set_source_file(java_class(), source_file);
2595       }
2596       if (ShowHiddenFrames) {
2597         source = vmSymbols::unknown_class_name();
2598         source_file = StringTable::intern(source, CHECK);
2599       }
2600     }
2601     java_lang_StackTraceElement::set_fileName(element(), source_file);
2602 
2603     int line_number = Backtrace::get_line_number(method, bci);
2604     java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2605   }
2606 }
2607 
2608 #if INCLUDE_JVMCI
2609 void java_lang_StackTraceElement::decode(Handle mirror, methodHandle method, int bci, Symbol*& methodname, Symbol*& filename, int& line_number) {
2610   int method_id = method->orig_method_idnum();
2611   int cpref = method->name_index();
2612   decode(mirror, method_id, method->constants()->version(), bci, cpref, methodname, filename, line_number);
2613 }
2614 
2615 void java_lang_StackTraceElement::decode(Handle mirror, int method_id, int version, int bci, int cpref, Symbol*& methodname, Symbol*& filename, int& line_number) {
2616   // Fill in class name
2617   InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2618   Method* method = holder->method_with_orig_idnum(method_id, version);
2619 
2620   // The method can be NULL if the requested class version is gone
2621   Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
2622 
2623   // Fill in method name
2624   methodname = sym;
2625 
2626   if (!version_matches(method, version)) {
2627     // If the method was redefined, accurate line number information isn't available
2628     filename = NULL;
2629     line_number = -1;
2630   } else {
2631     // Fill in source file name and line number.
2632     // Use a specific ik version as a holder since the mirror might
2633     // refer to a version that is now obsolete and no longer accessible
2634     // via the previous versions list.
2635     holder = holder->get_klass_version(version);
2636     assert(holder != NULL, "sanity check");
2637     Symbol* source = holder->source_file_name();
2638     if (ShowHiddenFrames && source == NULL) {
2639       source = vmSymbols::unknown_class_name();
2640     }
2641     filename = source;
2642     line_number = Backtrace::get_line_number(method, bci);
2643   }
2644 }
2645 #endif // INCLUDE_JVMCI
2646 
2647 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2648   HandleMark hm(THREAD);
2649   Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2650   Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2651   // we should expand MemberName::name when Throwable uses StackTrace
2652   // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2653   return method;
2654 }
2655 
2656 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2657   // set Method* or mid/cpref
2658   HandleMark hm(THREAD);
2659   Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2660   InstanceKlass* ik = method->method_holder();
2661   CallInfo info(method(), ik, CHECK);
2662   MethodHandles::init_method_MemberName(mname, info);
2663   // set bci
2664   java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2665   // method may be redefined; store the version
2666   int version = method->constants()->version();
2667   assert((jushort)version == version, "version should be short");
2668   java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2669 }
2670 
2671 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2672   ResourceMark rm(THREAD);
2673   HandleMark hm(THREAD);
2674   Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2675   Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2676   InstanceKlass* holder = InstanceKlass::cast(clazz);
2677   Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2678 
2679   short version = stackFrame->short_field(_version_offset);
2680   short bci = stackFrame->short_field(_bci_offset);
2681   Symbol* name = method->name();
2682   java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, name, CHECK);
2683 }
2684 
2685 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2686   macro(_memberName_offset,     k, "memberName",  object_signature, false); \
2687   macro(_bci_offset,            k, "bci",         short_signature,  false)
2688 
2689 void java_lang_StackFrameInfo::compute_offsets() {
2690   InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2691   STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2692   STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2693 }
2694 
2695 #if INCLUDE_CDS
2696 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2697   STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2698   STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2699 }
2700 #endif
2701 
2702 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2703   macro(_monitors_offset,   k, "monitors",    object_array_signature, false); \
2704   macro(_locals_offset,     k, "locals",      object_array_signature, false); \
2705   macro(_operands_offset,   k, "operands",    object_array_signature, false); \
2706   macro(_mode_offset,       k, "mode",        int_signature,          false)
2707 
2708 void java_lang_LiveStackFrameInfo::compute_offsets() {
2709   InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2710   LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2711 }
2712 
2713 #if INCLUDE_CDS
2714 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2715   LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2716 }
2717 #endif
2718 
2719 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2720   macro(override_offset, k, "override", bool_signature, false)
2721 
2722 void java_lang_reflect_AccessibleObject::compute_offsets() {
2723   InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2724   ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2725 }
2726 
2727 #if INCLUDE_CDS
2728 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2729   ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2730 }
2731 #endif
2732 
2733 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2734   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2735   return (jboolean) reflect->bool_field(override_offset);
2736 }
2737 
2738 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2739   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2740   reflect->bool_field_put(override_offset, (int) value);
2741 }
2742 
2743 #define METHOD_FIELDS_DO(macro) \
2744   macro(clazz_offset,          k, vmSymbols::clazz_name(),          class_signature,       false); \
2745   macro(name_offset,           k, vmSymbols::name_name(),           string_signature,      false); \
2746   macro(returnType_offset,     k, vmSymbols::returnType_name(),     class_signature,       false); \
2747   macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2748   macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2749   macro(slot_offset,           k, vmSymbols::slot_name(),           int_signature,         false); \
2750   macro(modifiers_offset,      k, vmSymbols::modifiers_name(),      int_signature,         false); \
2751   macro(signature_offset,             k, vmSymbols::signature_name(),             string_signature,     false); \
2752   macro(annotations_offset,           k, vmSymbols::annotations_name(),           byte_array_signature, false); \
2753   macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \
2754   macro(annotation_default_offset,    k, vmSymbols::annotation_default_name(),    byte_array_signature, false);
2755 
2756 void java_lang_reflect_Method::compute_offsets() {
2757   InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2758   METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2759 }
2760 
2761 #if INCLUDE_CDS
2762 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2763   METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2764 }
2765 #endif
2766 
2767 Handle java_lang_reflect_Method::create(TRAPS) {
2768   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2769   Klass* klass = SystemDictionary::reflect_Method_klass();
2770   // This class is eagerly initialized during VM initialization, since we keep a refence
2771   // to one of the methods
2772   assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2773   return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2774 }
2775 
2776 oop java_lang_reflect_Method::clazz(oop reflect) {
2777   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2778   return reflect->obj_field(clazz_offset);
2779 }
2780 
2781 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2782   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2783    reflect->obj_field_put(clazz_offset, value);
2784 }
2785 
2786 int java_lang_reflect_Method::slot(oop reflect) {
2787   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2788   return reflect->int_field(slot_offset);
2789 }
2790 
2791 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2792   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2793   reflect->int_field_put(slot_offset, value);
2794 }
2795 
2796 void java_lang_reflect_Method::set_name(oop method, oop value) {
2797   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2798   method->obj_field_put(name_offset, value);
2799 }
2800 
2801 oop java_lang_reflect_Method::return_type(oop method) {
2802   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2803   return method->obj_field(returnType_offset);
2804 }
2805 
2806 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2807   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2808   method->obj_field_put(returnType_offset, value);
2809 }
2810 
2811 oop java_lang_reflect_Method::parameter_types(oop method) {
2812   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2813   return method->obj_field(parameterTypes_offset);
2814 }
2815 
2816 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2817   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2818   method->obj_field_put(parameterTypes_offset, value);
2819 }
2820 
2821 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2822   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2823   method->obj_field_put(exceptionTypes_offset, value);
2824 }
2825 
2826 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2827   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2828   method->int_field_put(modifiers_offset, value);
2829 }
2830 
2831 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2832   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2833   method->obj_field_put(signature_offset, value);
2834 }
2835 
2836 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2837   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2838   method->obj_field_put(annotations_offset, value);
2839 }
2840 
2841 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2842   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2843   method->obj_field_put(parameter_annotations_offset, value);
2844 }
2845 
2846 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2847   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2848   method->obj_field_put(annotation_default_offset, value);
2849 }
2850 
2851 #define CONSTRUCTOR_FIELDS_DO(macro) \
2852   macro(clazz_offset,          k, vmSymbols::clazz_name(),          class_signature,       false); \
2853   macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2854   macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2855   macro(slot_offset,           k, vmSymbols::slot_name(),           int_signature,         false); \
2856   macro(modifiers_offset,      k, vmSymbols::modifiers_name(),      int_signature,         false); \
2857   macro(signature_offset,             k, vmSymbols::signature_name(),             string_signature,     false); \
2858   macro(annotations_offset,           k, vmSymbols::annotations_name(),           byte_array_signature, false); \
2859   macro(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false);
2860 
2861 void java_lang_reflect_Constructor::compute_offsets() {
2862   InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2863   CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2864 }
2865 
2866 #if INCLUDE_CDS
2867 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
2868   CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2869 }
2870 #endif
2871 
2872 Handle java_lang_reflect_Constructor::create(TRAPS) {
2873   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2874   Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2875   Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2876   InstanceKlass* ik = InstanceKlass::cast(k);
2877   // Ensure it is initialized
2878   ik->initialize(CHECK_NH);
2879   return ik->allocate_instance_handle(THREAD);
2880 }
2881 
2882 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2883   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2884   return reflect->obj_field(clazz_offset);
2885 }
2886 
2887 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2888   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2889    reflect->obj_field_put(clazz_offset, value);
2890 }
2891 
2892 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2893   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2894   return constructor->obj_field(parameterTypes_offset);
2895 }
2896 
2897 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2898   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2899   constructor->obj_field_put(parameterTypes_offset, value);
2900 }
2901 
2902 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2903   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2904   constructor->obj_field_put(exceptionTypes_offset, value);
2905 }
2906 
2907 int java_lang_reflect_Constructor::slot(oop reflect) {
2908   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2909   return reflect->int_field(slot_offset);
2910 }
2911 
2912 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2913   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2914   reflect->int_field_put(slot_offset, value);
2915 }
2916 
2917 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
2918   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2919   constructor->int_field_put(modifiers_offset, value);
2920 }
2921 
2922 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
2923   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2924   constructor->obj_field_put(signature_offset, value);
2925 }
2926 
2927 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
2928   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2929   constructor->obj_field_put(annotations_offset, value);
2930 }
2931 
2932 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
2933   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2934   method->obj_field_put(parameter_annotations_offset, value);
2935 }
2936 
2937 #define FIELD_FIELDS_DO(macro) \
2938   macro(clazz_offset,     k, vmSymbols::clazz_name(),     class_signature,  false); \
2939   macro(name_offset,      k, vmSymbols::name_name(),      string_signature, false); \
2940   macro(type_offset,      k, vmSymbols::type_name(),      class_signature,  false); \
2941   macro(slot_offset,      k, vmSymbols::slot_name(),      int_signature,    false); \
2942   macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature,    false); \
2943   macro(signature_offset,        k, vmSymbols::signature_name(),        string_signature,     false); \
2944   macro(annotations_offset,      k, vmSymbols::annotations_name(),      byte_array_signature, false);
2945 
2946 void java_lang_reflect_Field::compute_offsets() {
2947   InstanceKlass* k = SystemDictionary::reflect_Field_klass();
2948   FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2949 }
2950 
2951 #if INCLUDE_CDS
2952 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
2953   FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2954 }
2955 #endif
2956 
2957 Handle java_lang_reflect_Field::create(TRAPS) {
2958   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2959   Symbol* name = vmSymbols::java_lang_reflect_Field();
2960   Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2961   InstanceKlass* ik = InstanceKlass::cast(k);
2962   // Ensure it is initialized
2963   ik->initialize(CHECK_NH);
2964   return ik->allocate_instance_handle(THREAD);
2965 }
2966 
2967 oop java_lang_reflect_Field::clazz(oop reflect) {
2968   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2969   return reflect->obj_field(clazz_offset);
2970 }
2971 
2972 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
2973   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2974    reflect->obj_field_put(clazz_offset, value);
2975 }
2976 
2977 oop java_lang_reflect_Field::name(oop field) {
2978   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2979   return field->obj_field(name_offset);
2980 }
2981 
2982 void java_lang_reflect_Field::set_name(oop field, oop value) {
2983   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2984   field->obj_field_put(name_offset, value);
2985 }
2986 
2987 oop java_lang_reflect_Field::type(oop field) {
2988   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2989   return field->obj_field(type_offset);
2990 }
2991 
2992 void java_lang_reflect_Field::set_type(oop field, oop value) {
2993   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2994   field->obj_field_put(type_offset, value);
2995 }
2996 
2997 int java_lang_reflect_Field::slot(oop reflect) {
2998   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2999   return reflect->int_field(slot_offset);
3000 }
3001 
3002 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3003   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3004   reflect->int_field_put(slot_offset, value);
3005 }
3006 
3007 int java_lang_reflect_Field::modifiers(oop field) {
3008   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3009   return field->int_field(modifiers_offset);
3010 }
3011 
3012 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3013   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3014   field->int_field_put(modifiers_offset, value);
3015 }
3016 
3017 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3018   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3019   field->obj_field_put(signature_offset, value);
3020 }
3021 
3022 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3023   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3024   field->obj_field_put(annotations_offset, value);
3025 }
3026 
3027 #define CONSTANTPOOL_FIELDS_DO(macro) \
3028   macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3029 
3030 void reflect_ConstantPool::compute_offsets() {
3031   InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3032   // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3033   CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3034 }
3035 
3036 #if INCLUDE_CDS
3037 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3038   CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3039 }
3040 #endif
3041 
3042 #define PARAMETER_FIELDS_DO(macro) \
3043   macro(name_offset,        k, vmSymbols::name_name(),        string_signature, false); \
3044   macro(modifiers_offset,   k, vmSymbols::modifiers_name(),   int_signature,    false); \
3045   macro(index_offset,       k, vmSymbols::index_name(),       int_signature,    false); \
3046   macro(executable_offset,  k, vmSymbols::executable_name(),  executable_signature, false)
3047 
3048 void java_lang_reflect_Parameter::compute_offsets() {
3049   InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3050   PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3051 }
3052 
3053 #if INCLUDE_CDS
3054 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3055   PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3056 }
3057 #endif
3058 
3059 Handle java_lang_reflect_Parameter::create(TRAPS) {
3060   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3061   Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3062   Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3063   InstanceKlass* ik = InstanceKlass::cast(k);
3064   // Ensure it is initialized
3065   ik->initialize(CHECK_NH);
3066   return ik->allocate_instance_handle(THREAD);
3067 }
3068 
3069 oop java_lang_reflect_Parameter::name(oop param) {
3070   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3071   return param->obj_field(name_offset);
3072 }
3073 
3074 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3075   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3076   param->obj_field_put(name_offset, value);
3077 }
3078 
3079 int java_lang_reflect_Parameter::modifiers(oop param) {
3080   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3081   return param->int_field(modifiers_offset);
3082 }
3083 
3084 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3085   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3086   param->int_field_put(modifiers_offset, value);
3087 }
3088 
3089 int java_lang_reflect_Parameter::index(oop param) {
3090   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3091   return param->int_field(index_offset);
3092 }
3093 
3094 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3095   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3096   param->int_field_put(index_offset, value);
3097 }
3098 
3099 oop java_lang_reflect_Parameter::executable(oop param) {
3100   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3101   return param->obj_field(executable_offset);
3102 }
3103 
3104 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3105   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3106   param->obj_field_put(executable_offset, value);
3107 }
3108 
3109 
3110 int java_lang_Module::loader_offset;
3111 int java_lang_Module::name_offset;
3112 int java_lang_Module::_module_entry_offset = -1;
3113 
3114 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3115   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3116   return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3117                           vmSymbols::java_lang_module_init_signature(),
3118                           loader, module_name, CHECK_NH);
3119 }
3120 
3121 #define MODULE_FIELDS_DO(macro) \
3122   macro(loader_offset,  k, vmSymbols::loader_name(),  classloader_signature, false); \
3123   macro(name_offset,    k, vmSymbols::name_name(),    string_signature,      false)
3124 
3125 void java_lang_Module::compute_offsets() {
3126   InstanceKlass* k = SystemDictionary::Module_klass();
3127   MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3128   MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3129 }
3130 
3131 #if INCLUDE_CDS
3132 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3133   MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3134   MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3135 }
3136 #endif
3137 
3138 oop java_lang_Module::loader(oop module) {
3139   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3140   return module->obj_field(loader_offset);
3141 }
3142 
3143 void java_lang_Module::set_loader(oop module, oop value) {
3144   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3145   module->obj_field_put(loader_offset, value);
3146 }
3147 
3148 oop java_lang_Module::name(oop module) {
3149   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3150   return module->obj_field(name_offset);
3151 }
3152 
3153 void java_lang_Module::set_name(oop module, oop value) {
3154   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3155   module->obj_field_put(name_offset, value);
3156 }
3157 
3158 ModuleEntry* java_lang_Module::module_entry(oop module) {
3159   assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3160   assert(module != NULL, "module can't be null");
3161   assert(oopDesc::is_oop(module), "module must be oop");
3162 
3163   ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3164   if (module_entry == NULL) {
3165     // If the inject field containing the ModuleEntry* is null then return the
3166     // class loader's unnamed module.
3167     oop loader = java_lang_Module::loader(module);
3168     Handle h_loader = Handle(Thread::current(), loader);
3169     ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3170     return loader_cld->unnamed_module();
3171   }
3172   return module_entry;
3173 }
3174 
3175 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3176   assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3177   assert(module != NULL, "module can't be null");
3178   assert(oopDesc::is_oop(module), "module must be oop");
3179   module->address_field_put(_module_entry_offset, (address)module_entry);
3180 }
3181 
3182 Handle reflect_ConstantPool::create(TRAPS) {
3183   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3184   InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3185   // Ensure it is initialized
3186   k->initialize(CHECK_NH);
3187   return k->allocate_instance_handle(THREAD);
3188 }
3189 
3190 
3191 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3192   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3193   oop mirror = value->pool_holder()->java_mirror();
3194   // Save the mirror to get back the constant pool.
3195   reflect->obj_field_put(_oop_offset, mirror);
3196 }
3197 
3198 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3199   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3200 
3201   oop mirror = reflect->obj_field(_oop_offset);
3202   Klass* k = java_lang_Class::as_Klass(mirror);
3203   assert(k->is_instance_klass(), "Must be");
3204 
3205   // Get the constant pool back from the klass.  Since class redefinition
3206   // merges the new constant pool into the old, this is essentially the
3207   // same constant pool as the original.  If constant pool merging is
3208   // no longer done in the future, this will have to change to save
3209   // the original.
3210   return InstanceKlass::cast(k)->constants();
3211 }
3212 
3213 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3214   macro(_base_offset, k, "base", object_signature, false)
3215 
3216 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3217   InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3218   UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3219 }
3220 
3221 #if INCLUDE_CDS
3222 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3223   UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3224 }
3225 #endif
3226 
3227 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3228   Klass* k = SystemDictionary::box_klass(type);
3229   if (k == NULL)  return NULL;
3230   InstanceKlass* ik = InstanceKlass::cast(k);
3231   if (!ik->is_initialized())  ik->initialize(CHECK_0);
3232   return ik->allocate_instance(THREAD);
3233 }
3234 
3235 
3236 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3237   oop box = initialize_and_allocate(type, CHECK_0);
3238   if (box == NULL)  return NULL;
3239   switch (type) {
3240     case T_BOOLEAN:
3241       box->bool_field_put(value_offset, value->z);
3242       break;
3243     case T_CHAR:
3244       box->char_field_put(value_offset, value->c);
3245       break;
3246     case T_FLOAT:
3247       box->float_field_put(value_offset, value->f);
3248       break;
3249     case T_DOUBLE:
3250       box->double_field_put(long_value_offset, value->d);
3251       break;
3252     case T_BYTE:
3253       box->byte_field_put(value_offset, value->b);
3254       break;
3255     case T_SHORT:
3256       box->short_field_put(value_offset, value->s);
3257       break;
3258     case T_INT:
3259       box->int_field_put(value_offset, value->i);
3260       break;
3261     case T_LONG:
3262       box->long_field_put(long_value_offset, value->j);
3263       break;
3264     default:
3265       return NULL;
3266   }
3267   return box;
3268 }
3269 
3270 
3271 BasicType java_lang_boxing_object::basic_type(oop box) {
3272   if (box == NULL)  return T_ILLEGAL;
3273   BasicType type = SystemDictionary::box_klass_type(box->klass());
3274   if (type == T_OBJECT)         // 'unknown' value returned by SD::bkt
3275     return T_ILLEGAL;
3276   return type;
3277 }
3278 
3279 
3280 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3281   BasicType type = SystemDictionary::box_klass_type(box->klass());
3282   switch (type) {
3283   case T_BOOLEAN:
3284     value->z = box->bool_field(value_offset);
3285     break;
3286   case T_CHAR:
3287     value->c = box->char_field(value_offset);
3288     break;
3289   case T_FLOAT:
3290     value->f = box->float_field(value_offset);
3291     break;
3292   case T_DOUBLE:
3293     value->d = box->double_field(long_value_offset);
3294     break;
3295   case T_BYTE:
3296     value->b = box->byte_field(value_offset);
3297     break;
3298   case T_SHORT:
3299     value->s = box->short_field(value_offset);
3300     break;
3301   case T_INT:
3302     value->i = box->int_field(value_offset);
3303     break;
3304   case T_LONG:
3305     value->j = box->long_field(long_value_offset);
3306     break;
3307   default:
3308     return T_ILLEGAL;
3309   } // end switch
3310   return type;
3311 }
3312 
3313 
3314 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3315   BasicType type = SystemDictionary::box_klass_type(box->klass());
3316   switch (type) {
3317   case T_BOOLEAN:
3318     box->bool_field_put(value_offset, value->z);
3319     break;
3320   case T_CHAR:
3321     box->char_field_put(value_offset, value->c);
3322     break;
3323   case T_FLOAT:
3324     box->float_field_put(value_offset, value->f);
3325     break;
3326   case T_DOUBLE:
3327     box->double_field_put(long_value_offset, value->d);
3328     break;
3329   case T_BYTE:
3330     box->byte_field_put(value_offset, value->b);
3331     break;
3332   case T_SHORT:
3333     box->short_field_put(value_offset, value->s);
3334     break;
3335   case T_INT:
3336     box->int_field_put(value_offset, value->i);
3337     break;
3338   case T_LONG:
3339     box->long_field_put(long_value_offset, value->j);
3340     break;
3341   default:
3342     return T_ILLEGAL;
3343   } // end switch
3344   return type;
3345 }
3346 
3347 
3348 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3349   switch (type) {
3350   case T_BOOLEAN:   st->print("%s", value->z ? "true" : "false");   break;
3351   case T_CHAR:      st->print("%d", value->c);                      break;
3352   case T_BYTE:      st->print("%d", value->b);                      break;
3353   case T_SHORT:     st->print("%d", value->s);                      break;
3354   case T_INT:       st->print("%d", value->i);                      break;
3355   case T_LONG:      st->print(JLONG_FORMAT, value->j);              break;
3356   case T_FLOAT:     st->print("%f", value->f);                      break;
3357   case T_DOUBLE:    st->print("%lf", value->d);                     break;
3358   default:          st->print("type %d?", type);                    break;
3359   }
3360 }
3361 
3362 // Support for java_lang_ref_Reference
3363 
3364 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3365   assert(obj != NULL, "sanity");
3366   if (offset != java_lang_ref_Reference::referent_offset) {
3367     return false;
3368   }
3369 
3370   Klass* k = obj->klass();
3371   if (!k->is_instance_klass()) {
3372     return false;
3373   }
3374 
3375   InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3376   bool is_reference = ik->reference_type() != REF_NONE;
3377   assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3378   return is_reference;
3379 }
3380 
3381 // Support for java_lang_ref_SoftReference
3382 //
3383 
3384 #define SOFTREFERENCE_FIELDS_DO(macro) \
3385   macro(timestamp_offset,    k, "timestamp", long_signature, false); \
3386   macro(static_clock_offset, k, "clock",     long_signature, true)
3387 
3388 void java_lang_ref_SoftReference::compute_offsets() {
3389   InstanceKlass* k = SystemDictionary::SoftReference_klass();
3390   SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3391 }
3392 
3393 #if INCLUDE_CDS
3394 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3395   SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3396 }
3397 #endif
3398 
3399 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3400   return ref->long_field(timestamp_offset);
3401 }
3402 
3403 jlong java_lang_ref_SoftReference::clock() {
3404   InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3405   oop base = ik->static_field_base_raw();
3406   return base->long_field(static_clock_offset);
3407 }
3408 
3409 void java_lang_ref_SoftReference::set_clock(jlong value) {
3410   InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3411   oop base = ik->static_field_base_raw();
3412   base->long_field_put(static_clock_offset, value);
3413 }
3414 
3415 // Support for java_lang_invoke_DirectMethodHandle
3416 
3417 int java_lang_invoke_DirectMethodHandle::_member_offset;
3418 
3419 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3420   oop member_name = NULL;
3421   assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3422          "a DirectMethodHandle oop is expected");
3423   return dmh->obj_field(member_offset_in_bytes());
3424 }
3425 
3426 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3427   macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3428 
3429 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3430   InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3431   DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3432 }
3433 
3434 #if INCLUDE_CDS
3435 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3436   DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3437 }
3438 #endif
3439 
3440 // Support for java_lang_invoke_MethodHandle
3441 
3442 int java_lang_invoke_MethodHandle::_type_offset;
3443 int java_lang_invoke_MethodHandle::_form_offset;
3444 
3445 int java_lang_invoke_MemberName::_clazz_offset;
3446 int java_lang_invoke_MemberName::_name_offset;
3447 int java_lang_invoke_MemberName::_type_offset;
3448 int java_lang_invoke_MemberName::_flags_offset;
3449 int java_lang_invoke_MemberName::_method_offset;
3450 int java_lang_invoke_MemberName::_vmindex_offset;
3451 
3452 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3453 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3454 
3455 int java_lang_invoke_LambdaForm::_vmentry_offset;
3456 
3457 #define METHODHANDLE_FIELDS_DO(macro) \
3458   macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3459   macro(_form_offset, k, "form",                 java_lang_invoke_LambdaForm_signature, false)
3460 
3461 void java_lang_invoke_MethodHandle::compute_offsets() {
3462   InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3463   METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3464 }
3465 
3466 #if INCLUDE_CDS
3467 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3468   METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3469 }
3470 #endif
3471 
3472 #define MEMBERNAME_FIELDS_DO(macro) \
3473   macro(_clazz_offset,   k, vmSymbols::clazz_name(),   class_signature,  false); \
3474   macro(_name_offset,    k, vmSymbols::name_name(),    string_signature, false); \
3475   macro(_type_offset,    k, vmSymbols::type_name(),    object_signature, false); \
3476   macro(_flags_offset,   k, vmSymbols::flags_name(),   int_signature,    false); \
3477   macro(_method_offset,  k, vmSymbols::method_name(),  java_lang_invoke_ResolvedMethodName_signature, false)
3478 
3479 void java_lang_invoke_MemberName::compute_offsets() {
3480   InstanceKlass* k = SystemDictionary::MemberName_klass();
3481   MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3482   MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3483 }
3484 
3485 #if INCLUDE_CDS
3486 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3487   MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3488   MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3489 }
3490 #endif
3491 
3492 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3493   InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3494   assert(k != NULL, "jdk mismatch");
3495   RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3496 }
3497 
3498 #if INCLUDE_CDS
3499 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3500   RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3501 }
3502 #endif
3503 
3504 #define LAMBDAFORM_FIELDS_DO(macro) \
3505   macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3506 
3507 void java_lang_invoke_LambdaForm::compute_offsets() {
3508   InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3509   assert (k != NULL, "jdk mismatch");
3510   LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3511 }
3512 
3513 #if INCLUDE_CDS
3514 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3515   LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3516 }
3517 #endif
3518 
3519 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3520   return obj != NULL && is_subclass(obj->klass());
3521 }
3522 
3523 
3524 oop java_lang_invoke_MethodHandle::type(oop mh) {
3525   return mh->obj_field(_type_offset);
3526 }
3527 
3528 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3529   mh->obj_field_put(_type_offset, mtype);
3530 }
3531 
3532 oop java_lang_invoke_MethodHandle::form(oop mh) {
3533   assert(_form_offset != 0, "");
3534   return mh->obj_field(_form_offset);
3535 }
3536 
3537 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3538   assert(_form_offset != 0, "");
3539   mh->obj_field_put(_form_offset, lform);
3540 }
3541 
3542 /// MemberName accessors
3543 
3544 oop java_lang_invoke_MemberName::clazz(oop mname) {
3545   assert(is_instance(mname), "wrong type");
3546   return mname->obj_field(_clazz_offset);
3547 }
3548 
3549 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3550   assert(is_instance(mname), "wrong type");
3551   mname->obj_field_put(_clazz_offset, clazz);
3552 }
3553 
3554 oop java_lang_invoke_MemberName::name(oop mname) {
3555   assert(is_instance(mname), "wrong type");
3556   return mname->obj_field(_name_offset);
3557 }
3558 
3559 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3560   assert(is_instance(mname), "wrong type");
3561   mname->obj_field_put(_name_offset, name);
3562 }
3563 
3564 oop java_lang_invoke_MemberName::type(oop mname) {
3565   assert(is_instance(mname), "wrong type");
3566   return mname->obj_field(_type_offset);
3567 }
3568 
3569 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3570   assert(is_instance(mname), "wrong type");
3571   mname->obj_field_put(_type_offset, type);
3572 }
3573 
3574 int java_lang_invoke_MemberName::flags(oop mname) {
3575   assert(is_instance(mname), "wrong type");
3576   return mname->int_field(_flags_offset);
3577 }
3578 
3579 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3580   assert(is_instance(mname), "wrong type");
3581   mname->int_field_put(_flags_offset, flags);
3582 }
3583 
3584 
3585 // Return vmtarget from ResolvedMethodName method field through indirection
3586 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3587   assert(is_instance(mname), "wrong type");
3588   oop method = mname->obj_field(_method_offset);
3589   return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3590 }
3591 
3592 bool java_lang_invoke_MemberName::is_method(oop mname) {
3593   assert(is_instance(mname), "must be MemberName");
3594   return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3595 }
3596 
3597 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3598   assert(is_instance(mname), "wrong type");
3599   mname->obj_field_put(_method_offset, resolved_method);
3600 }
3601 
3602 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3603   assert(is_instance(mname), "wrong type");
3604   return (intptr_t) mname->address_field(_vmindex_offset);
3605 }
3606 
3607 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3608   assert(is_instance(mname), "wrong type");
3609   mname->address_field_put(_vmindex_offset, (address) index);
3610 }
3611 
3612 
3613 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3614   assert(is_instance(resolved_method), "wrong type");
3615   Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3616   assert(m->is_method(), "must be");
3617   return m;
3618 }
3619 
3620 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3621 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3622   assert(is_instance(resolved_method), "wrong type");
3623   resolved_method->address_field_put(_vmtarget_offset, (address)m);
3624 }
3625 
3626 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) {
3627   assert(is_instance(resolved_method), "wrong type");
3628   resolved_method->obj_field_put(_vmholder_offset, holder);
3629 }
3630 
3631 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3632   const Method* method = m();
3633 
3634   // lookup ResolvedMethod oop in the table, or create a new one and intern it
3635   oop resolved_method = ResolvedMethodTable::find_method(method);
3636   if (resolved_method != NULL) {
3637     return resolved_method;
3638   }
3639 
3640   InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3641   if (!k->is_initialized()) {
3642     k->initialize(CHECK_NULL);
3643   }
3644 
3645   oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3646 
3647   NoSafepointVerifier nsv;
3648 
3649   if (method->is_old()) {
3650     method = (method->is_deleted()) ? Universe::throw_no_such_method_error() :
3651                                       method->get_new_method();
3652   }
3653 
3654   InstanceKlass* holder = method->method_holder();
3655 
3656   set_vmtarget(new_resolved_method, const_cast<Method*>(method));
3657   // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3658   // distinct loaders) to ensure the metadata is kept alive.
3659   // This mirror may be different than the one in clazz field.
3660   set_vmholder(new_resolved_method, holder->java_mirror());
3661 
3662   // Set flag in class to indicate this InstanceKlass has entries in the table
3663   // to avoid walking table during redefinition if none of the redefined classes
3664   // have any membernames in the table.
3665   holder->set_has_resolved_methods();
3666 
3667   return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method));
3668 }
3669 
3670 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3671   assert(is_instance(lform), "wrong type");
3672   return lform->obj_field(_vmentry_offset);
3673 }
3674 
3675 
3676 // Support for java_lang_invoke_MethodType
3677 
3678 int java_lang_invoke_MethodType::_rtype_offset;
3679 int java_lang_invoke_MethodType::_ptypes_offset;
3680 
3681 #define METHODTYPE_FIELDS_DO(macro) \
3682   macro(_rtype_offset,  k, "rtype",  class_signature,       false); \
3683   macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3684 
3685 void java_lang_invoke_MethodType::compute_offsets() {
3686   InstanceKlass* k = SystemDictionary::MethodType_klass();
3687   METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3688 }
3689 
3690 #if INCLUDE_CDS
3691 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3692   METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3693 }
3694 #endif
3695 
3696 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3697   st->print("(");
3698   objArrayOop pts = ptypes(mt);
3699   for (int i = 0, limit = pts->length(); i < limit; i++) {
3700     java_lang_Class::print_signature(pts->obj_at(i), st);
3701   }
3702   st->print(")");
3703   java_lang_Class::print_signature(rtype(mt), st);
3704 }
3705 
3706 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
3707   ResourceMark rm;
3708   stringStream buffer(128);
3709   print_signature(mt, &buffer);
3710   const char* sigstr =       buffer.base();
3711   int         siglen = (int) buffer.size();
3712   Symbol *name;
3713   if (!intern_if_not_found) {
3714     name = SymbolTable::probe(sigstr, siglen);
3715   } else {
3716     name = SymbolTable::new_symbol(sigstr, siglen);
3717   }
3718   return name;
3719 }
3720 
3721 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3722   if (oopDesc::equals(mt1, mt2))
3723     return true;
3724   if (!oopDesc::equals(rtype(mt1), rtype(mt2)))
3725     return false;
3726   if (ptype_count(mt1) != ptype_count(mt2))
3727     return false;
3728   for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3729     if (!oopDesc::equals(ptype(mt1, i), ptype(mt2, i)))
3730       return false;
3731   }
3732   return true;
3733 }
3734 
3735 oop java_lang_invoke_MethodType::rtype(oop mt) {
3736   assert(is_instance(mt), "must be a MethodType");
3737   return mt->obj_field(_rtype_offset);
3738 }
3739 
3740 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3741   assert(is_instance(mt), "must be a MethodType");
3742   return (objArrayOop) mt->obj_field(_ptypes_offset);
3743 }
3744 
3745 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3746   return ptypes(mt)->obj_at(idx);
3747 }
3748 
3749 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3750   return ptypes(mt)->length();
3751 }
3752 
3753 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3754   objArrayOop pts = ptypes(mt);
3755   int count = pts->length();
3756   int slots = 0;
3757   for (int i = 0; i < count; i++) {
3758     BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3759     slots += type2size[bt];
3760   }
3761   return slots;
3762 }
3763 
3764 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3765   BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3766   return type2size[bt];
3767 }
3768 
3769 
3770 // Support for java_lang_invoke_CallSite
3771 
3772 int java_lang_invoke_CallSite::_target_offset;
3773 int java_lang_invoke_CallSite::_context_offset;
3774 
3775 #define CALLSITE_FIELDS_DO(macro) \
3776   macro(_target_offset,  k, "target", java_lang_invoke_MethodHandle_signature, false); \
3777   macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3778 
3779 void java_lang_invoke_CallSite::compute_offsets() {
3780   InstanceKlass* k = SystemDictionary::CallSite_klass();
3781   CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3782 }
3783 
3784 #if INCLUDE_CDS
3785 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
3786   CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3787 }
3788 #endif
3789 
3790 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) {
3791   assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3792 
3793   oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset);
3794   return dep_oop;
3795 }
3796 
3797 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3798 
3799 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3800 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset;
3801 
3802 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3803   InstanceKlass* k = SystemDictionary::Context_klass();
3804   CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3805 }
3806 
3807 #if INCLUDE_CDS
3808 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
3809   CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3810 }
3811 #endif
3812 
3813 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3814   assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3815   nmethodBucket* volatile* vmdeps_addr = (nmethodBucket* volatile*)call_site->field_addr(_vmdependencies_offset);
3816   volatile uint64_t* last_cleanup_addr = (volatile uint64_t*)call_site->field_addr(_last_cleanup_offset);
3817   DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr);
3818   return dep_ctx;
3819 }
3820 
3821 // Support for java_security_AccessControlContext
3822 
3823 int java_security_AccessControlContext::_context_offset = 0;
3824 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3825 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3826 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3827 
3828 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
3829   macro(_context_offset,           k, "context",      protectiondomain_signature, false); \
3830   macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
3831   macro(_isPrivileged_offset,      k, "isPrivileged", bool_signature, false); \
3832   macro(_isAuthorized_offset,      k, "isAuthorized", bool_signature, false)
3833 
3834 void java_security_AccessControlContext::compute_offsets() {
3835   assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3836   InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
3837   ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3838 }
3839 
3840 #if INCLUDE_CDS
3841 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
3842   ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3843 }
3844 #endif
3845 
3846 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
3847   assert(_isPrivileged_offset != 0, "offsets should have been initialized");
3848   // Ensure klass is initialized
3849   SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
3850   // Allocate result
3851   oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
3852   // Fill in values
3853   result->obj_field_put(_context_offset, context());
3854   result->obj_field_put(_privilegedContext_offset, privileged_context());
3855   result->bool_field_put(_isPrivileged_offset, isPrivileged);
3856   // whitelist AccessControlContexts created by the JVM if present
3857   if (_isAuthorized_offset != -1) {
3858     result->bool_field_put(_isAuthorized_offset, true);
3859   }
3860   return result;
3861 }
3862 
3863 
3864 // Support for java_lang_ClassLoader
3865 
3866 bool java_lang_ClassLoader::offsets_computed = false;
3867 int  java_lang_ClassLoader::_loader_data_offset = -1;
3868 int  java_lang_ClassLoader::parallelCapable_offset = -1;
3869 int  java_lang_ClassLoader::name_offset = -1;
3870 int  java_lang_ClassLoader::nameAndId_offset = -1;
3871 int  java_lang_ClassLoader::unnamedModule_offset = -1;
3872 
3873 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
3874   assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3875   return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
3876 }
3877 
3878 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
3879   assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3880   return RawAccess<>::load_at(loader, _loader_data_offset);
3881 }
3882 
3883 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
3884   assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
3885   HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
3886 }
3887 
3888 #define CLASSLOADER_FIELDS_DO(macro) \
3889   macro(parallelCapable_offset, k1, "parallelLockMap",      concurrenthashmap_signature, false); \
3890   macro(name_offset,            k1, vmSymbols::name_name(), string_signature, false); \
3891   macro(nameAndId_offset,       k1, "nameAndId",            string_signature, false); \
3892   macro(unnamedModule_offset,   k1, "unnamedModule",        module_signature, false); \
3893   macro(parent_offset,          k1, "parent",               classloader_signature, false)
3894 
3895 void java_lang_ClassLoader::compute_offsets() {
3896   assert(!offsets_computed, "offsets should be initialized only once");
3897   offsets_computed = true;
3898 
3899   InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
3900   CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3901 
3902   CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3903 }
3904 
3905 #if INCLUDE_CDS
3906 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
3907   CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3908   CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3909 }
3910 #endif
3911 
3912 oop java_lang_ClassLoader::parent(oop loader) {
3913   assert(is_instance(loader), "loader must be oop");
3914   return loader->obj_field(parent_offset);
3915 }
3916 
3917 // Returns the name field of this class loader.  If the name field has not
3918 // been set, null will be returned.
3919 oop java_lang_ClassLoader::name(oop loader) {
3920   assert(is_instance(loader), "loader must be oop");
3921   return loader->obj_field(name_offset);
3922 }
3923 
3924 // Returns the nameAndId field of this class loader. The format is
3925 // as follows:
3926 //   If the defining loader has a name explicitly set then '<loader-name>' @<id>
3927 //   If the defining loader has no name then <qualified-class-name> @<id>
3928 //   If built-in loader, then omit '@<id>' as there is only one instance.
3929 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
3930 oop java_lang_ClassLoader::nameAndId(oop loader) {
3931   assert(is_instance(loader), "loader must be oop");
3932   return loader->obj_field(nameAndId_offset);
3933 }
3934 
3935 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
3936   assert(is_instance(loader), "loader must be oop");
3937   assert(cl == NULL || is_instance(cl), "cl argument must be oop");
3938   oop acl = loader;
3939   debug_only(jint loop_count = 0);
3940   // This loop taken verbatim from ClassLoader.java:
3941   do {
3942     acl = parent(acl);
3943     if (oopDesc::equals(cl, acl)) {
3944       return true;
3945     }
3946     assert(++loop_count > 0, "loop_count overflow");
3947   } while (acl != NULL);
3948   return false;
3949 }
3950 
3951 bool java_lang_ClassLoader::is_instance(oop obj) {
3952   return obj != NULL && is_subclass(obj->klass());
3953 }
3954 
3955 
3956 // For class loader classes, parallelCapable defined
3957 // based on non-null field
3958 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
3959 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
3960   if (parallelCapable_offset == -1) {
3961      // Default for backward compatibility is false
3962      return false;
3963   }
3964   return (class_loader->obj_field(parallelCapable_offset) != NULL);
3965 }
3966 
3967 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
3968   // Fix for 4474172; see evaluation for more details
3969   loader = non_reflection_class_loader(loader);
3970 
3971   oop cl = SystemDictionary::java_system_loader();
3972   while(cl != NULL) {
3973     if (oopDesc::equals(cl, loader)) return true;
3974     cl = parent(cl);
3975   }
3976   return false;
3977 }
3978 
3979 // Return true if this is one of the class loaders associated with
3980 // the generated bytecodes for reflection.
3981 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
3982   if (loader != NULL) {
3983     Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
3984     // This might be null in non-1.4 JDKs
3985     return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
3986   }
3987   return false;
3988 }
3989 
3990 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
3991   // See whether this is one of the class loaders associated with
3992   // the generated bytecodes for reflection, and if so, "magically"
3993   // delegate to its parent to prevent class loading from occurring
3994   // in places where applications using reflection didn't expect it.
3995   if (is_reflection_class_loader(loader)) {
3996     return parent(loader);
3997   }
3998   return loader;
3999 }
4000 
4001 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4002   assert(is_instance(loader), "loader must be oop");
4003   return loader->obj_field(unnamedModule_offset);
4004 }
4005 
4006 // Support for java_lang_System
4007 //
4008 #define SYSTEM_FIELDS_DO(macro) \
4009   macro(static_in_offset,  k, "in",  input_stream_signature, true); \
4010   macro(static_out_offset, k, "out", print_stream_signature, true); \
4011   macro(static_err_offset, k, "err", print_stream_signature, true); \
4012   macro(static_security_offset, k, "security", security_manager_signature, true)
4013 
4014 void java_lang_System::compute_offsets() {
4015   InstanceKlass* k = SystemDictionary::System_klass();
4016   SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4017 }
4018 
4019 #if INCLUDE_CDS
4020 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4021    SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4022 }
4023 #endif
4024 
4025 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4026 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4027 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4028 
4029 // Support for jdk_internal_misc_UnsafeConstants
4030 //
4031 class UnsafeConstantsFixup : public FieldClosure {
4032 private:
4033   int _address_size;
4034   int _page_size;
4035   bool _big_endian;
4036   bool _use_unaligned_access;
4037 public:
4038   UnsafeConstantsFixup() {
4039     // round up values for all static final fields
4040     _address_size = sizeof(void*);
4041     _page_size = os::vm_page_size();
4042     _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true);
4043     _use_unaligned_access = UseUnalignedAccesses;
4044   }
4045 
4046   void do_field(fieldDescriptor* fd) {
4047     oop mirror = fd->field_holder()->java_mirror();
4048     assert(mirror != NULL, "UnsafeConstants must have mirror already");
4049     assert(fd->field_holder() == SystemDictionary::UnsafeConstants_klass(), "Should be UnsafeConstants");
4050     assert(fd->is_final(), "fields of UnsafeConstants must be final");
4051     assert(fd->is_static(), "fields of UnsafeConstants must be static");
4052     if (fd->name() == vmSymbols::address_size_name()) {
4053       mirror->int_field_put(fd->offset(), _address_size);
4054     } else if (fd->name() == vmSymbols::page_size_name()) {
4055       mirror->int_field_put(fd->offset(), _page_size);
4056     } else if (fd->name() == vmSymbols::big_endian_name()) {
4057       mirror->bool_field_put(fd->offset(), _big_endian);
4058     } else if (fd->name() == vmSymbols::use_unaligned_access_name()) {
4059       mirror->bool_field_put(fd->offset(), _use_unaligned_access);
4060     } else {
4061       assert(false, "unexpected UnsafeConstants field");
4062     }
4063   }
4064 };
4065 
4066 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() {
4067   UnsafeConstantsFixup fixup;
4068   SystemDictionary::UnsafeConstants_klass()->do_local_static_fields(&fixup);
4069 }
4070 
4071 int java_lang_Class::_klass_offset;
4072 int java_lang_Class::_array_klass_offset;
4073 int java_lang_Class::_oop_size_offset;
4074 int java_lang_Class::_static_oop_field_count_offset;
4075 int java_lang_Class::_class_loader_offset;
4076 int java_lang_Class::_module_offset;
4077 int java_lang_Class::_protection_domain_offset;
4078 int java_lang_Class::_component_mirror_offset;
4079 int java_lang_Class::_init_lock_offset;
4080 int java_lang_Class::_signers_offset;
4081 int java_lang_Class::_name_offset;
4082 int java_lang_Class::_source_file_offset;
4083 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4084 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4085 int java_lang_Throwable::backtrace_offset;
4086 int java_lang_Throwable::detailMessage_offset;
4087 int java_lang_Throwable::stackTrace_offset;
4088 int java_lang_Throwable::depth_offset;
4089 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4090 int java_lang_reflect_AccessibleObject::override_offset;
4091 int java_lang_reflect_Method::clazz_offset;
4092 int java_lang_reflect_Method::name_offset;
4093 int java_lang_reflect_Method::returnType_offset;
4094 int java_lang_reflect_Method::parameterTypes_offset;
4095 int java_lang_reflect_Method::exceptionTypes_offset;
4096 int java_lang_reflect_Method::slot_offset;
4097 int java_lang_reflect_Method::modifiers_offset;
4098 int java_lang_reflect_Method::signature_offset;
4099 int java_lang_reflect_Method::annotations_offset;
4100 int java_lang_reflect_Method::parameter_annotations_offset;
4101 int java_lang_reflect_Method::annotation_default_offset;
4102 int java_lang_reflect_Constructor::clazz_offset;
4103 int java_lang_reflect_Constructor::parameterTypes_offset;
4104 int java_lang_reflect_Constructor::exceptionTypes_offset;
4105 int java_lang_reflect_Constructor::slot_offset;
4106 int java_lang_reflect_Constructor::modifiers_offset;
4107 int java_lang_reflect_Constructor::signature_offset;
4108 int java_lang_reflect_Constructor::annotations_offset;
4109 int java_lang_reflect_Constructor::parameter_annotations_offset;
4110 int java_lang_reflect_Field::clazz_offset;
4111 int java_lang_reflect_Field::name_offset;
4112 int java_lang_reflect_Field::type_offset;
4113 int java_lang_reflect_Field::slot_offset;
4114 int java_lang_reflect_Field::modifiers_offset;
4115 int java_lang_reflect_Field::signature_offset;
4116 int java_lang_reflect_Field::annotations_offset;
4117 int java_lang_reflect_Parameter::name_offset;
4118 int java_lang_reflect_Parameter::modifiers_offset;
4119 int java_lang_reflect_Parameter::index_offset;
4120 int java_lang_reflect_Parameter::executable_offset;
4121 int java_lang_boxing_object::value_offset;
4122 int java_lang_boxing_object::long_value_offset;
4123 int java_lang_ref_Reference::referent_offset;
4124 int java_lang_ref_Reference::queue_offset;
4125 int java_lang_ref_Reference::next_offset;
4126 int java_lang_ref_Reference::discovered_offset;
4127 int java_lang_ref_SoftReference::timestamp_offset;
4128 int java_lang_ref_SoftReference::static_clock_offset;
4129 int java_lang_ClassLoader::parent_offset;
4130 int java_lang_System::static_in_offset;
4131 int java_lang_System::static_out_offset;
4132 int java_lang_System::static_err_offset;
4133 int java_lang_System::static_security_offset;
4134 int java_lang_StackTraceElement::methodName_offset;
4135 int java_lang_StackTraceElement::fileName_offset;
4136 int java_lang_StackTraceElement::lineNumber_offset;
4137 int java_lang_StackTraceElement::moduleName_offset;
4138 int java_lang_StackTraceElement::moduleVersion_offset;
4139 int java_lang_StackTraceElement::classLoaderName_offset;
4140 int java_lang_StackTraceElement::declaringClass_offset;
4141 int java_lang_StackTraceElement::declaringClassObject_offset;
4142 int java_lang_StackFrameInfo::_memberName_offset;
4143 int java_lang_StackFrameInfo::_bci_offset;
4144 int java_lang_StackFrameInfo::_version_offset;
4145 int java_lang_LiveStackFrameInfo::_monitors_offset;
4146 int java_lang_LiveStackFrameInfo::_locals_offset;
4147 int java_lang_LiveStackFrameInfo::_operands_offset;
4148 int java_lang_LiveStackFrameInfo::_mode_offset;
4149 int java_lang_AssertionStatusDirectives::classes_offset;
4150 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4151 int java_lang_AssertionStatusDirectives::packages_offset;
4152 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4153 int java_lang_AssertionStatusDirectives::deflt_offset;
4154 int java_nio_Buffer::_limit_offset;
4155 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4156 int reflect_ConstantPool::_oop_offset;
4157 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4158 int java_lang_Integer_IntegerCache::_static_cache_offset;
4159 int java_lang_Long_LongCache::_static_cache_offset;
4160 int java_lang_Character_CharacterCache::_static_cache_offset;
4161 int java_lang_Short_ShortCache::_static_cache_offset;
4162 int java_lang_Byte_ByteCache::_static_cache_offset;
4163 int java_lang_Boolean::_static_TRUE_offset;
4164 int java_lang_Boolean::_static_FALSE_offset;
4165 
4166 
4167 
4168 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4169   macro(declaringClassObject_offset,  k, "declaringClassObject", class_signature, false); \
4170   macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4171   macro(moduleName_offset,      k, "moduleName",      string_signature, false); \
4172   macro(moduleVersion_offset,   k, "moduleVersion",   string_signature, false); \
4173   macro(declaringClass_offset,  k, "declaringClass",  string_signature, false); \
4174   macro(methodName_offset,      k, "methodName",      string_signature, false); \
4175   macro(fileName_offset,        k, "fileName",        string_signature, false); \
4176   macro(lineNumber_offset,      k, "lineNumber",      int_signature,    false)
4177 
4178 // Support for java_lang_StackTraceElement
4179 void java_lang_StackTraceElement::compute_offsets() {
4180   InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4181   STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4182 }
4183 
4184 #if INCLUDE_CDS
4185 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4186   STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4187 }
4188 #endif
4189 
4190 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4191   element->obj_field_put(fileName_offset, value);
4192 }
4193 
4194 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4195   element->obj_field_put(declaringClass_offset, value);
4196 }
4197 
4198 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4199   element->obj_field_put(methodName_offset, value);
4200 }
4201 
4202 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4203   element->int_field_put(lineNumber_offset, value);
4204 }
4205 
4206 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4207   element->obj_field_put(moduleName_offset, value);
4208 }
4209 
4210 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4211   element->obj_field_put(moduleVersion_offset, value);
4212 }
4213 
4214 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4215   element->obj_field_put(classLoaderName_offset, value);
4216 }
4217 
4218 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4219   element->obj_field_put(declaringClassObject_offset, value);
4220 }
4221 
4222 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4223   element->short_field_put(_version_offset, value);
4224 }
4225 
4226 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4227   element->int_field_put(_bci_offset, value);
4228 }
4229 
4230 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4231   element->obj_field_put(_monitors_offset, value);
4232 }
4233 
4234 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4235   element->obj_field_put(_locals_offset, value);
4236 }
4237 
4238 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4239   element->obj_field_put(_operands_offset, value);
4240 }
4241 
4242 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4243   element->int_field_put(_mode_offset, value);
4244 }
4245 
4246 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4247 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4248   macro(classes_offset,        k, "classes",        string_array_signature, false); \
4249   macro(classEnabled_offset,   k, "classEnabled",   bool_array_signature, false); \
4250   macro(packages_offset,       k, "packages",       string_array_signature, false); \
4251   macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature,   false); \
4252   macro(deflt_offset,          k, "deflt",          bool_signature,         false)
4253 
4254 void java_lang_AssertionStatusDirectives::compute_offsets() {
4255   InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4256   ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4257 }
4258 
4259 #if INCLUDE_CDS
4260 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4261   ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4262 }
4263 #endif
4264 
4265 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4266   o->obj_field_put(classes_offset, val);
4267 }
4268 
4269 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4270   o->obj_field_put(classEnabled_offset, val);
4271 }
4272 
4273 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4274   o->obj_field_put(packages_offset, val);
4275 }
4276 
4277 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4278   o->obj_field_put(packageEnabled_offset, val);
4279 }
4280 
4281 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4282   o->bool_field_put(deflt_offset, val);
4283 }
4284 
4285 
4286 // Support for intrinsification of java.nio.Buffer.checkIndex
4287 int java_nio_Buffer::limit_offset() {
4288   return _limit_offset;
4289 }
4290 
4291 #define BUFFER_FIELDS_DO(macro) \
4292   macro(_limit_offset, k, "limit", int_signature, false)
4293 
4294 void java_nio_Buffer::compute_offsets() {
4295   InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4296   assert(k != NULL, "must be loaded in 1.4+");
4297   BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4298 }
4299 
4300 #if INCLUDE_CDS
4301 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4302   BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4303 }
4304 #endif
4305 
4306 #define AOS_FIELDS_DO(macro) \
4307   macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4308 
4309 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4310   InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4311   AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4312 }
4313 
4314 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4315   assert(_owner_offset != 0, "Must be initialized");
4316   return obj->obj_field(_owner_offset);
4317 }
4318 
4319 #if INCLUDE_CDS
4320 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4321   AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4322 }
4323 #endif
4324 
4325 #define INTEGER_CACHE_FIELDS_DO(macro) \
4326   macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
4327 
4328 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
4329   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4330   INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4331 }
4332 
4333 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
4334   oop base = ik->static_field_base_raw();
4335   return objArrayOop(base->obj_field(_static_cache_offset));
4336 }
4337 
4338 Symbol* java_lang_Integer_IntegerCache::symbol() {
4339   return vmSymbols::java_lang_Integer_IntegerCache();
4340 }
4341 
4342 #if INCLUDE_CDS
4343 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
4344   INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4345 }
4346 #endif
4347 #undef INTEGER_CACHE_FIELDS_DO
4348 
4349 jint java_lang_Integer::value(oop obj) {
4350    jvalue v;
4351    java_lang_boxing_object::get_value(obj, &v);
4352    return v.i;
4353 }
4354 
4355 #define LONG_CACHE_FIELDS_DO(macro) \
4356   macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
4357 
4358 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
4359   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4360   LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4361 }
4362 
4363 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
4364   oop base = ik->static_field_base_raw();
4365   return objArrayOop(base->obj_field(_static_cache_offset));
4366 }
4367 
4368 Symbol* java_lang_Long_LongCache::symbol() {
4369   return vmSymbols::java_lang_Long_LongCache();
4370 }
4371 
4372 #if INCLUDE_CDS
4373 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
4374   LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4375 }
4376 #endif
4377 #undef LONG_CACHE_FIELDS_DO
4378 
4379 jlong java_lang_Long::value(oop obj) {
4380    jvalue v;
4381    java_lang_boxing_object::get_value(obj, &v);
4382    return v.j;
4383 }
4384 
4385 #define CHARACTER_CACHE_FIELDS_DO(macro) \
4386   macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
4387 
4388 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
4389   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4390   CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4391 }
4392 
4393 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
4394   oop base = ik->static_field_base_raw();
4395   return objArrayOop(base->obj_field(_static_cache_offset));
4396 }
4397 
4398 Symbol* java_lang_Character_CharacterCache::symbol() {
4399   return vmSymbols::java_lang_Character_CharacterCache();
4400 }
4401 
4402 #if INCLUDE_CDS
4403 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
4404   CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4405 }
4406 #endif
4407 #undef CHARACTER_CACHE_FIELDS_DO
4408 
4409 jchar java_lang_Character::value(oop obj) {
4410    jvalue v;
4411    java_lang_boxing_object::get_value(obj, &v);
4412    return v.c;
4413 }
4414 
4415 #define SHORT_CACHE_FIELDS_DO(macro) \
4416   macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
4417 
4418 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
4419   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4420   SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4421 }
4422 
4423 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
4424   oop base = ik->static_field_base_raw();
4425   return objArrayOop(base->obj_field(_static_cache_offset));
4426 }
4427 
4428 Symbol* java_lang_Short_ShortCache::symbol() {
4429   return vmSymbols::java_lang_Short_ShortCache();
4430 }
4431 
4432 #if INCLUDE_CDS
4433 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
4434   SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4435 }
4436 #endif
4437 #undef SHORT_CACHE_FIELDS_DO
4438 
4439 jshort java_lang_Short::value(oop obj) {
4440    jvalue v;
4441    java_lang_boxing_object::get_value(obj, &v);
4442    return v.s;
4443 }
4444 
4445 #define BYTE_CACHE_FIELDS_DO(macro) \
4446   macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
4447 
4448 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
4449   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4450   BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4451 }
4452 
4453 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
4454   oop base = ik->static_field_base_raw();
4455   return objArrayOop(base->obj_field(_static_cache_offset));
4456 }
4457 
4458 Symbol* java_lang_Byte_ByteCache::symbol() {
4459   return vmSymbols::java_lang_Byte_ByteCache();
4460 }
4461 
4462 #if INCLUDE_CDS
4463 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
4464   BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4465 }
4466 #endif
4467 #undef BYTE_CACHE_FIELDS_DO
4468 
4469 jbyte java_lang_Byte::value(oop obj) {
4470    jvalue v;
4471    java_lang_boxing_object::get_value(obj, &v);
4472    return v.b;
4473 }
4474 #define BOOLEAN_FIELDS_DO(macro) \
4475   macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
4476   macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
4477 
4478 
4479 void java_lang_Boolean::compute_offsets(InstanceKlass *k) {
4480   guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized");
4481   BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4482 }
4483 
4484 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) {
4485   oop base = ik->static_field_base_raw();
4486   return base->obj_field(_static_TRUE_offset);
4487 }
4488 
4489 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) {
4490   oop base = ik->static_field_base_raw();
4491   return base->obj_field(_static_FALSE_offset);
4492 }
4493 
4494 Symbol* java_lang_Boolean::symbol() {
4495   return vmSymbols::java_lang_Boolean();
4496 }
4497 
4498 #if INCLUDE_CDS
4499 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) {
4500   BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4501 }
4502 #endif
4503 #undef BOOLEAN_CACHE_FIELDS_DO
4504 
4505 jboolean java_lang_Boolean::value(oop obj) {
4506    jvalue v;
4507    java_lang_boxing_object::get_value(obj, &v);
4508    return v.z;
4509 }
4510 
4511 static int member_offset(int hardcoded_offset) {
4512   return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4513 }
4514 
4515 // Compute hard-coded offsets
4516 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4517 // are not available to determine the offset_of_static_fields.
4518 void JavaClasses::compute_hard_coded_offsets() {
4519 
4520   // java_lang_boxing_object
4521   java_lang_boxing_object::value_offset      = member_offset(java_lang_boxing_object::hc_value_offset);
4522   java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4523 
4524   // java_lang_ref_Reference
4525   java_lang_ref_Reference::referent_offset    = member_offset(java_lang_ref_Reference::hc_referent_offset);
4526   java_lang_ref_Reference::queue_offset       = member_offset(java_lang_ref_Reference::hc_queue_offset);
4527   java_lang_ref_Reference::next_offset        = member_offset(java_lang_ref_Reference::hc_next_offset);
4528   java_lang_ref_Reference::discovered_offset  = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4529 }
4530 
4531 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4532 
4533 // Compute non-hard-coded field offsets of all the classes in this file
4534 void JavaClasses::compute_offsets() {
4535   if (UseSharedSpaces) {
4536     assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() &&
4537                                               JvmtiExport::has_early_class_hook_env()),
4538            "JavaClasses::compute_offsets() must be called in early JVMTI phase.");
4539     // None of the classes used by the rest of this function can be replaced by
4540     // JMVTI ClassFileLoadHook.
4541     // We are safe to use the archived offsets, which have already been restored
4542     // by JavaClasses::serialize_offsets, without computing the offsets again.
4543     return;
4544   }
4545 
4546   // We have already called the compute_offsets() of the
4547   // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String and java_lang_Class)
4548   // earlier inside SystemDictionary::resolve_well_known_classes()
4549   BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4550 
4551   // generated interpreter code wants to know about the offsets we just computed:
4552   AbstractAssembler::update_delayed_values();
4553 }
4554 
4555 #if INCLUDE_CDS
4556 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4557 
4558 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4559   BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4560 }
4561 #endif
4562 
4563 
4564 #ifndef PRODUCT
4565 
4566 // These functions exist to assert the validity of hard-coded field offsets to guard
4567 // against changes in the class files
4568 
4569 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4570   EXCEPTION_MARK;
4571   fieldDescriptor fd;
4572   TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name);
4573   Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4574   InstanceKlass* ik = InstanceKlass::cast(k);
4575   TempNewSymbol f_name = SymbolTable::new_symbol(field_name);
4576   TempNewSymbol f_sig  = SymbolTable::new_symbol(field_sig);
4577   if (!ik->find_local_field(f_name, f_sig, &fd)) {
4578     tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4579     return false;
4580   }
4581   if (fd.is_static()) {
4582     tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4583     return false;
4584   }
4585   if (fd.offset() == hardcoded_offset ) {
4586     return true;
4587   } else {
4588     tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4589                   klass_name, field_name, hardcoded_offset, fd.offset());
4590     return false;
4591   }
4592 }
4593 
4594 // Check the hard-coded field offsets of all the classes in this file
4595 
4596 void JavaClasses::check_offsets() {
4597   bool valid = true;
4598 
4599 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4600   valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4601 
4602 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4603   valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4604 
4605   // Boxed primitive objects (java_lang_boxing_object)
4606 
4607   CHECK_OFFSET("java/lang/Boolean",   java_lang_boxing_object, value, "Z");
4608   CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4609   CHECK_OFFSET("java/lang/Float",     java_lang_boxing_object, value, "F");
4610   CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4611   CHECK_OFFSET("java/lang/Byte",      java_lang_boxing_object, value, "B");
4612   CHECK_OFFSET("java/lang/Short",     java_lang_boxing_object, value, "S");
4613   CHECK_OFFSET("java/lang/Integer",   java_lang_boxing_object, value, "I");
4614   CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4615 
4616   // java.lang.ref.Reference
4617 
4618   CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4619   CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4620   CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4621   // Fake field
4622   //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4623 
4624   if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4625 }
4626 
4627 #endif // PRODUCT
4628 
4629 int InjectedField::compute_offset() {
4630   InstanceKlass* ik = InstanceKlass::cast(klass());
4631   for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4632     if (!may_be_java && !fs.access_flags().is_internal()) {
4633       // Only look at injected fields
4634       continue;
4635     }
4636     if (fs.name() == name() && fs.signature() == signature()) {
4637       return fs.offset();
4638     }
4639   }
4640   ResourceMark rm;
4641   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)" : "");
4642 #ifndef PRODUCT
4643   ik->print();
4644   tty->print_cr("all fields:");
4645   for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4646     tty->print_cr("  name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4647   }
4648 #endif //PRODUCT
4649   vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class");
4650   return -1;
4651 }
4652 
4653 void javaClasses_init() {
4654   JavaClasses::compute_offsets();
4655   JavaClasses::check_offsets();
4656   FilteredFieldsMap::initialize();  // must be done after computing offsets.
4657 }