1 /*
   2  * Copyright (c) 1997, 2018, 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/vmSymbols.hpp"
  32 #include "code/debugInfo.hpp"
  33 #include "code/dependencyContext.hpp"
  34 #include "code/pcDesc.hpp"
  35 #include "interpreter/interpreter.hpp"
  36 #include "interpreter/linkResolver.hpp"
  37 #include "logging/log.hpp"
  38 #include "logging/logStream.hpp"
  39 #include "memory/oopFactory.hpp"
  40 #include "memory/metaspaceShared.inline.hpp"
  41 #include "memory/resourceArea.hpp"
  42 #include "memory/universe.hpp"
  43 #include "oops/fieldStreams.hpp"
  44 #include "oops/instanceKlass.hpp"
  45 #include "oops/instanceMirrorKlass.hpp"
  46 #include "oops/klass.hpp"
  47 #include "oops/method.inline.hpp"
  48 #include "oops/objArrayOop.inline.hpp"
  49 #include "oops/oop.inline.hpp"
  50 #include "oops/symbol.hpp"
  51 #include "oops/typeArrayOop.inline.hpp"
  52 #include "prims/resolvedMethodTable.hpp"
  53 #include "runtime/fieldDescriptor.inline.hpp"
  54 #include "runtime/frame.inline.hpp"
  55 #include "runtime/handles.inline.hpp"
  56 #include "runtime/interfaceSupport.inline.hpp"
  57 #include "runtime/java.hpp"
  58 #include "runtime/javaCalls.hpp"
  59 #include "runtime/jniHandles.inline.hpp"
  60 #include "runtime/safepoint.hpp"
  61 #include "runtime/safepointVerifiers.hpp"
  62 #include "runtime/thread.inline.hpp"
  63 #include "runtime/vframe.inline.hpp"
  64 #include "utilities/align.hpp"
  65 #include "utilities/preserveException.hpp"
  66 #if INCLUDE_JVMCI
  67 #include "jvmci/jvmciJavaClasses.hpp"
  68 #endif
  69 
  70 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java)    \
  71   klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum);
  72 
  73 #if INCLUDE_CDS
  74 #define INJECTED_FIELD_SERIALIZE_OFFSET(klass, name, signature, may_be_java) \
  75   f->do_u4((u4*)&_##name##_offset);
  76 #endif
  77 
  78 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java)           \
  79   { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java },
  80 
  81 InjectedField JavaClasses::_injected_fields[] = {
  82   ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD)
  83 };
  84 
  85 int JavaClasses::compute_injected_offset(InjectedFieldID id) {
  86   return _injected_fields[id].compute_offset();
  87 }
  88 
  89 
  90 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) {
  91   *field_count = 0;
  92 
  93   vmSymbols::SID sid = vmSymbols::find_sid(class_name);
  94   if (sid == vmSymbols::NO_SID) {
  95     // Only well known classes can inject fields
  96     return NULL;
  97   }
  98 
  99   int count = 0;
 100   int start = -1;
 101 
 102 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \
 103   if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) {              \
 104     count++;                                                       \
 105     if (start == -1) start = klass##_##name##_enum;                \
 106   }
 107   ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD);
 108 #undef LOOKUP_INJECTED_FIELD
 109 
 110   if (start != -1) {
 111     *field_count = count;
 112     return _injected_fields + start;
 113   }
 114   return NULL;
 115 }
 116 
 117 
 118 // Helpful routine for computing field offsets at run time rather than hardcoding them
 119 // Finds local fields only, including static fields.  Static field offsets are from the
 120 // beginning of the mirror.
 121 static void compute_offset(int &dest_offset,
 122                            InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol,
 123                            bool is_static = false) {
 124   fieldDescriptor fd;
 125   if (ik == NULL) {
 126     ResourceMark rm;
 127     log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string());
 128     vm_exit_during_initialization("Invalid layout of preloaded class");
 129   }
 130 
 131   if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) {
 132     ResourceMark rm;
 133     log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(),
 134                      name_symbol->as_C_string(), signature_symbol->as_C_string());
 135 #ifndef PRODUCT
 136     // Prints all fields and offsets
 137     Log(class) lt;
 138     LogStream ls(lt.error());
 139     ik->print_on(&ls);
 140 #endif //PRODUCT
 141     vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
 142   }
 143   dest_offset = fd.offset();
 144 }
 145 
 146 // Overloading to pass name as a string.
 147 static void compute_offset(int& dest_offset, InstanceKlass* ik,
 148                            const char* name_string, Symbol* signature_symbol,
 149                            bool is_static = false) {
 150   TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string));
 151   if (name == NULL) {
 152     ResourceMark rm;
 153     log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string);
 154     vm_exit_during_initialization("Invalid layout of preloaded class", ik->external_name());
 155   }
 156   compute_offset(dest_offset, ik, name, signature_symbol, is_static);
 157 }
 158 
 159 // Same as above but for "optional" offsets that might not be present in certain JDK versions
 160 // Old versions should be cleaned out since Hotspot only supports the current JDK, and this
 161 // function should be removed.
 162 static void
 163 compute_optional_offset(int& dest_offset,
 164                         InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol) {
 165   fieldDescriptor fd;
 166   if (ik->find_local_field(name_symbol, signature_symbol, &fd)) {
 167     dest_offset = fd.offset();
 168   }
 169 }
 170 
 171 int java_lang_String::value_offset  = 0;
 172 int java_lang_String::hash_offset   = 0;
 173 int java_lang_String::coder_offset  = 0;
 174 
 175 bool java_lang_String::initialized  = false;
 176 
 177 bool java_lang_String::is_instance(oop obj) {
 178   return is_instance_inlined(obj);
 179 }
 180 
 181 #if INCLUDE_CDS
 182 #define FIELD_SERIALIZE_OFFSET(offset, klass, name, signature, is_static) \
 183   f->do_u4((u4*)&offset)
 184 
 185 #define FIELD_SERIALIZE_OFFSET_OPTIONAL(offset, klass, name, signature) \
 186   f->do_u4((u4*)&offset)
 187 #endif
 188 
 189 #define FIELD_COMPUTE_OFFSET(offset, klass, name, signature, is_static) \
 190   compute_offset(offset, klass, name, vmSymbols::signature(), is_static)
 191 
 192 #define FIELD_COMPUTE_OFFSET_OPTIONAL(offset, klass, name, signature) \
 193   compute_optional_offset(offset, klass, name, vmSymbols::signature())
 194 
 195 #define STRING_FIELDS_DO(macro) \
 196   macro(value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \
 197   macro(hash_offset,  k, "hash",                  int_signature,        false); \
 198   macro(coder_offset, k, "coder",                 byte_signature,       false)
 199 
 200 void java_lang_String::compute_offsets() {
 201   if (initialized) {
 202     return;
 203   }
 204 
 205   InstanceKlass* k = SystemDictionary::String_klass();
 206   STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
 207 
 208   initialized = true;
 209 }
 210 
 211 #if INCLUDE_CDS
 212 void java_lang_String::serialize_offsets(SerializeClosure* f) {
 213   STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
 214   f->do_u4((u4*)&initialized);
 215 }
 216 #endif
 217 
 218 class CompactStringsFixup : public FieldClosure {
 219 private:
 220   bool _value;
 221 
 222 public:
 223   CompactStringsFixup(bool value) : _value(value) {}
 224 
 225   void do_field(fieldDescriptor* fd) {
 226     if (fd->name() == vmSymbols::compact_strings_name()) {
 227       oop mirror = fd->field_holder()->java_mirror();
 228       assert(fd->field_holder() == SystemDictionary::String_klass(), "Should be String");
 229       assert(mirror != NULL, "String must have mirror already");
 230       mirror->bool_field_put(fd->offset(), _value);
 231     }
 232   }
 233 };
 234 
 235 void java_lang_String::set_compact_strings(bool value) {
 236   CompactStringsFixup fix(value);
 237   InstanceKlass::cast(SystemDictionary::String_klass())->do_local_static_fields(&fix);
 238 }
 239 
 240 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) {
 241   assert(initialized, "Must be initialized");
 242   assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings");
 243 
 244   // Create the String object first, so there's a chance that the String
 245   // and the char array it points to end up in the same cache line.
 246   oop obj;
 247   obj = SystemDictionary::String_klass()->allocate_instance(CHECK_NH);
 248 
 249   // Create the char array.  The String object must be handlized here
 250   // because GC can happen as a result of the allocation attempt.
 251   Handle h_obj(THREAD, obj);
 252   int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16.
 253   typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);;
 254 
 255   // Point the String at the char array
 256   obj = h_obj();
 257   set_value(obj, buffer);
 258   // No need to zero the offset, allocation zero'ed the entire String object
 259   set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16);
 260   return h_obj;
 261 }
 262 
 263 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) {
 264   bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length);
 265   Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
 266   typeArrayOop buffer = value(h_obj());
 267   assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]");
 268   if (is_latin1) {
 269     for (int index = 0; index < length; index++) {
 270       buffer->byte_at_put(index, (jbyte)unicode[index]);
 271     }
 272   } else {
 273     for (int index = 0; index < length; index++) {
 274       buffer->char_at_put(index, unicode[index]);
 275     }
 276   }
 277 
 278 #ifdef ASSERT
 279   {
 280     ResourceMark rm;
 281     char* expected = UNICODE::as_utf8(unicode, length);
 282     char* actual = as_utf8_string(h_obj());
 283     if (strcmp(expected, actual) != 0) {
 284       tty->print_cr("Unicode conversion failure: %s --> %s", expected, actual);
 285       ShouldNotReachHere();
 286     }
 287   }
 288 #endif
 289 
 290   return h_obj;
 291 }
 292 
 293 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) {
 294   Handle h_obj = create_from_unicode(unicode, length, CHECK_0);
 295   return h_obj();
 296 }
 297 
 298 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) {
 299   if (utf8_str == NULL) {
 300     return Handle();
 301   }
 302   bool has_multibyte, is_latin1;
 303   int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte);
 304   if (!CompactStrings) {
 305     has_multibyte = true;
 306     is_latin1 = false;
 307   }
 308 
 309   Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
 310   if (length > 0) {
 311     if (!has_multibyte) {
 312       const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
 313       ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
 314     } else if (is_latin1) {
 315       UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
 316     } else {
 317       UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
 318     }
 319   }
 320 
 321 #ifdef ASSERT
 322   // This check is too strict because the input string is not necessarily valid UTF8.
 323   // For example, it may be created with arbitrary content via jni_NewStringUTF.
 324   /*
 325   {
 326     ResourceMark rm;
 327     const char* expected = utf8_str;
 328     char* actual = as_utf8_string(h_obj());
 329     if (strcmp(expected, actual) != 0) {
 330       tty->print_cr("String conversion failure: %s --> %s", expected, actual);
 331       ShouldNotReachHere();
 332     }
 333   }
 334   */
 335 #endif
 336 
 337   return h_obj;
 338 }
 339 
 340 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) {
 341   Handle h_obj = create_from_str(utf8_str, CHECK_0);
 342   return h_obj();
 343 }
 344 
 345 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) {
 346   const char* utf8_str = (char*)symbol->bytes();
 347   int utf8_len = symbol->utf8_length();
 348 
 349   bool has_multibyte, is_latin1;
 350   int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte);
 351   if (!CompactStrings) {
 352     has_multibyte = true;
 353     is_latin1 = false;
 354   }
 355 
 356   Handle h_obj = basic_create(length, is_latin1, CHECK_NH);
 357   if (length > 0) {
 358     if (!has_multibyte) {
 359       const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str);
 360       ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length);
 361     } else if (is_latin1) {
 362       UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length);
 363     } else {
 364       UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length);
 365     }
 366   }
 367 
 368 #ifdef ASSERT
 369   {
 370     ResourceMark rm;
 371     const char* expected = symbol->as_utf8();
 372     char* actual = as_utf8_string(h_obj());
 373     if (strncmp(expected, actual, utf8_len) != 0) {
 374       tty->print_cr("Symbol conversion failure: %s --> %s", expected, actual);
 375       ShouldNotReachHere();
 376     }
 377   }
 378 #endif
 379 
 380   return h_obj;
 381 }
 382 
 383 // Converts a C string to a Java String based on current encoding
 384 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) {
 385   assert(str != NULL, "bad arguments");
 386 
 387   typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *);
 388   static to_java_string_fn_t _to_java_string_fn = NULL;
 389 
 390   if (_to_java_string_fn == NULL) {
 391     void *lib_handle = os::native_java_library();
 392     _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
 393     if (_to_java_string_fn == NULL) {
 394       fatal("NewStringPlatform missing");
 395     }
 396   }
 397 
 398   jstring js = NULL;
 399   { JavaThread* thread = (JavaThread*)THREAD;
 400     assert(thread->is_Java_thread(), "must be java thread");
 401     HandleMark hm(thread);
 402     ThreadToNativeFromVM ttn(thread);
 403     js = (_to_java_string_fn)(thread->jni_environment(), str);
 404   }
 405   return Handle(THREAD, JNIHandles::resolve(js));
 406 }
 407 
 408 // Converts a Java String to a native C string that can be used for
 409 // native OS calls.
 410 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) {
 411   typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*);
 412   static to_platform_string_fn_t _to_platform_string_fn = NULL;
 413 
 414   if (_to_platform_string_fn == NULL) {
 415     void *lib_handle = os::native_java_library();
 416     _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars"));
 417     if (_to_platform_string_fn == NULL) {
 418       fatal("GetStringPlatformChars missing");
 419     }
 420   }
 421 
 422   char *native_platform_string;
 423   { JavaThread* thread = (JavaThread*)THREAD;
 424     assert(thread->is_Java_thread(), "must be java thread");
 425     JNIEnv *env = thread->jni_environment();
 426     jstring js = (jstring) JNIHandles::make_local(env, java_string());
 427     bool is_copy;
 428     HandleMark hm(thread);
 429     ThreadToNativeFromVM ttn(thread);
 430     native_platform_string = (_to_platform_string_fn)(env, js, &is_copy);
 431     assert(is_copy == JNI_TRUE, "is_copy value changed");
 432     JNIHandles::destroy_local(js);
 433   }
 434   return native_platform_string;
 435 }
 436 
 437 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) {
 438   oop          obj    = java_string();
 439   // Typical usage is to convert all '/' to '.' in string.
 440   typeArrayOop value  = java_lang_String::value(obj);
 441   int          length = java_lang_String::length(obj);
 442   bool      is_latin1 = java_lang_String::is_latin1(obj);
 443 
 444   // First check if any from_char exist
 445   int index; // Declared outside, used later
 446   for (index = 0; index < length; index++) {
 447     jchar c = !is_latin1 ? value->char_at(index) :
 448                   ((jchar) value->byte_at(index)) & 0xff;
 449     if (c == from_char) {
 450       break;
 451     }
 452   }
 453   if (index == length) {
 454     // No from_char, so do not copy.
 455     return java_string;
 456   }
 457 
 458   // Check if result string will be latin1
 459   bool to_is_latin1 = false;
 460 
 461   // Replacement char must be latin1
 462   if (CompactStrings && UNICODE::is_latin1(to_char)) {
 463     if (is_latin1) {
 464       // Source string is latin1 as well
 465       to_is_latin1 = true;
 466     } else if (!UNICODE::is_latin1(from_char)) {
 467       // We are replacing an UTF16 char. Scan string to
 468       // check if result can be latin1 encoded.
 469       to_is_latin1 = true;
 470       for (index = 0; index < length; index++) {
 471         jchar c = value->char_at(index);
 472         if (c != from_char && !UNICODE::is_latin1(c)) {
 473           to_is_latin1 = false;
 474           break;
 475         }
 476       }
 477     }
 478   }
 479 
 480   // Create new UNICODE (or byte) buffer. Must handlize value because GC
 481   // may happen during String and char array creation.
 482   typeArrayHandle h_value(THREAD, value);
 483   Handle string = basic_create(length, to_is_latin1, CHECK_NH);
 484   typeArrayOop from_buffer = h_value();
 485   typeArrayOop to_buffer = java_lang_String::value(string());
 486 
 487   // Copy contents
 488   for (index = 0; index < length; index++) {
 489     jchar c = (!is_latin1) ? from_buffer->char_at(index) :
 490                     ((jchar) from_buffer->byte_at(index)) & 0xff;
 491     if (c == from_char) {
 492       c = to_char;
 493     }
 494     if (!to_is_latin1) {
 495       to_buffer->char_at_put(index, c);
 496     } else {
 497       to_buffer->byte_at_put(index, (jbyte) c);
 498     }
 499   }
 500   return string;
 501 }
 502 
 503 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) {
 504   typeArrayOop value  = java_lang_String::value(java_string);
 505                length = java_lang_String::length(java_string);
 506   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 507 
 508   jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length);
 509   if (result != NULL) {
 510     if (!is_latin1) {
 511       for (int index = 0; index < length; index++) {
 512         result[index] = value->char_at(index);
 513       }
 514     } else {
 515       for (int index = 0; index < length; index++) {
 516         result[index] = ((jchar) value->byte_at(index)) & 0xff;
 517       }
 518     }
 519   } else {
 520     THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string");
 521   }
 522   return result;
 523 }
 524 
 525 unsigned int java_lang_String::hash_code(oop java_string) {
 526   int          length = java_lang_String::length(java_string);
 527   // Zero length string will hash to zero with String.hashCode() function.
 528   if (length == 0) return 0;
 529 
 530   typeArrayOop value  = java_lang_String::value(java_string);
 531   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 532 
 533   if (is_latin1) {
 534     return java_lang_String::hash_code(value->byte_at_addr(0), length);
 535   } else {
 536     return java_lang_String::hash_code(value->char_at_addr(0), length);
 537   }
 538 }
 539 
 540 char* java_lang_String::as_quoted_ascii(oop java_string) {
 541   typeArrayOop value  = java_lang_String::value(java_string);
 542   int          length = java_lang_String::length(java_string);
 543   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 544 
 545   if (length == 0) return NULL;
 546 
 547   char* result;
 548   int result_length;
 549   if (!is_latin1) {
 550     jchar* base = value->char_at_addr(0);
 551     result_length = UNICODE::quoted_ascii_length(base, length) + 1;
 552     result = NEW_RESOURCE_ARRAY(char, result_length);
 553     UNICODE::as_quoted_ascii(base, length, result, result_length);
 554   } else {
 555     jbyte* base = value->byte_at_addr(0);
 556     result_length = UNICODE::quoted_ascii_length(base, length) + 1;
 557     result = NEW_RESOURCE_ARRAY(char, result_length);
 558     UNICODE::as_quoted_ascii(base, length, result, result_length);
 559   }
 560   assert(result_length >= length + 1, "must not be shorter");
 561   assert(result_length == (int)strlen(result) + 1, "must match");
 562   return result;
 563 }
 564 
 565 Symbol* java_lang_String::as_symbol(oop java_string, TRAPS) {
 566   typeArrayOop value  = java_lang_String::value(java_string);
 567   int          length = java_lang_String::length(java_string);
 568   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 569   if (!is_latin1) {
 570     jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
 571     Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD);
 572     return sym;
 573   } else {
 574     ResourceMark rm;
 575     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 576     const char* base = UNICODE::as_utf8(position, length);
 577     Symbol* sym = SymbolTable::lookup(base, length, THREAD);
 578     return sym;
 579   }
 580 }
 581 
 582 Symbol* java_lang_String::as_symbol_or_null(oop java_string) {
 583   typeArrayOop value  = java_lang_String::value(java_string);
 584   int          length = java_lang_String::length(java_string);
 585   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 586   if (!is_latin1) {
 587     jchar* base = (length == 0) ? NULL : value->char_at_addr(0);
 588     return SymbolTable::probe_unicode(base, length);
 589   } else {
 590     ResourceMark rm;
 591     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 592     const char* base = UNICODE::as_utf8(position, length);
 593     return SymbolTable::probe(base, length);
 594   }
 595 }
 596 
 597 int java_lang_String::utf8_length(oop java_string) {
 598   typeArrayOop value  = java_lang_String::value(java_string);
 599   int          length = java_lang_String::length(java_string);
 600   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 601   if (length == 0) {
 602     return 0;
 603   }
 604   if (!is_latin1) {
 605     return UNICODE::utf8_length(value->char_at_addr(0), length);
 606   } else {
 607     return UNICODE::utf8_length(value->byte_at_addr(0), length);
 608   }
 609 }
 610 
 611 char* java_lang_String::as_utf8_string(oop java_string) {
 612   typeArrayOop value  = java_lang_String::value(java_string);
 613   int          length = java_lang_String::length(java_string);
 614   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 615   if (!is_latin1) {
 616     jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
 617     return UNICODE::as_utf8(position, length);
 618   } else {
 619     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 620     return UNICODE::as_utf8(position, length);
 621   }
 622 }
 623 
 624 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) {
 625   typeArrayOop value  = java_lang_String::value(java_string);
 626   int          length = java_lang_String::length(java_string);
 627   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 628   if (!is_latin1) {
 629     jchar* position = (length == 0) ? NULL : value->char_at_addr(0);
 630     return UNICODE::as_utf8(position, length, buf, buflen);
 631   } else {
 632     jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0);
 633     return UNICODE::as_utf8(position, length, buf, buflen);
 634   }
 635 }
 636 
 637 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) {
 638   typeArrayOop value  = java_lang_String::value(java_string);
 639   int          length = java_lang_String::length(java_string);
 640   assert(start + len <= length, "just checking");
 641   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 642   if (!is_latin1) {
 643     jchar* position = value->char_at_addr(start);
 644     return UNICODE::as_utf8(position, len);
 645   } else {
 646     jbyte* position = value->byte_at_addr(start);
 647     return UNICODE::as_utf8(position, len);
 648   }
 649 }
 650 
 651 char* java_lang_String::as_utf8_string(oop java_string, int start, int len, char* buf, int buflen) {
 652   typeArrayOop value  = java_lang_String::value(java_string);
 653   int          length = java_lang_String::length(java_string);
 654   assert(start + len <= length, "just checking");
 655   bool      is_latin1 = java_lang_String::is_latin1(java_string);
 656   if (!is_latin1) {
 657     jchar* position = value->char_at_addr(start);
 658     return UNICODE::as_utf8(position, len, buf, buflen);
 659   } else {
 660     jbyte* position = value->byte_at_addr(start);
 661     return UNICODE::as_utf8(position, len, buf, buflen);
 662   }
 663 }
 664 
 665 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) {
 666   assert(java_string->klass() == SystemDictionary::String_klass(),
 667          "must be java_string");
 668   typeArrayOop value = java_lang_String::value_no_keepalive(java_string);
 669   int length = java_lang_String::length(java_string);
 670   if (length != len) {
 671     return false;
 672   }
 673   bool is_latin1 = java_lang_String::is_latin1(java_string);
 674   if (!is_latin1) {
 675     for (int i = 0; i < len; i++) {
 676       if (value->char_at(i) != chars[i]) {
 677         return false;
 678       }
 679     }
 680   } else {
 681     for (int i = 0; i < len; i++) {
 682       if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) {
 683         return false;
 684       }
 685     }
 686   }
 687   return true;
 688 }
 689 
 690 bool java_lang_String::equals(oop str1, oop str2) {
 691   assert(str1->klass() == SystemDictionary::String_klass(),
 692          "must be java String");
 693   assert(str2->klass() == SystemDictionary::String_klass(),
 694          "must be java String");
 695   typeArrayOop value1    = java_lang_String::value_no_keepalive(str1);
 696   int          length1   = java_lang_String::length(str1);
 697   bool         is_latin1 = java_lang_String::is_latin1(str1);
 698   typeArrayOop value2    = java_lang_String::value_no_keepalive(str2);
 699   int          length2   = java_lang_String::length(str2);
 700   bool         is_latin2 = java_lang_String::is_latin1(str2);
 701 
 702   if ((length1 != length2) || (is_latin1 != is_latin2)) {
 703     // Strings of different size or with different
 704     // coders are never equal.
 705     return false;
 706   }
 707   int blength1 = value1->length();
 708   for (int i = 0; i < blength1; i++) {
 709     if (value1->byte_at(i) != value2->byte_at(i)) {
 710       return false;
 711     }
 712   }
 713   return true;
 714 }
 715 
 716 void java_lang_String::print(oop java_string, outputStream* st) {
 717   assert(java_string->klass() == SystemDictionary::String_klass(), "must be java_string");
 718   typeArrayOop value  = java_lang_String::value_no_keepalive(java_string);
 719 
 720   if (value == NULL) {
 721     // This can happen if, e.g., printing a String
 722     // object before its initializer has been called
 723     st->print("NULL");
 724     return;
 725   }
 726 
 727   int length = java_lang_String::length(java_string);
 728   bool is_latin1 = java_lang_String::is_latin1(java_string);
 729 
 730   st->print("\"");
 731   for (int index = 0; index < length; index++) {
 732     st->print("%c", (!is_latin1) ?  value->char_at(index) :
 733                            ((jchar) value->byte_at(index)) & 0xff );
 734   }
 735   st->print("\"");
 736 }
 737 
 738 
 739 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
 740   assert(mirror.not_null() && fd->is_static(), "just checking");
 741   if (fd->has_initial_value()) {
 742     BasicType t = fd->field_type();
 743     switch (t) {
 744       case T_BYTE:
 745         mirror()->byte_field_put(fd->offset(), fd->int_initial_value());
 746               break;
 747       case T_BOOLEAN:
 748         mirror()->bool_field_put(fd->offset(), fd->int_initial_value());
 749               break;
 750       case T_CHAR:
 751         mirror()->char_field_put(fd->offset(), fd->int_initial_value());
 752               break;
 753       case T_SHORT:
 754         mirror()->short_field_put(fd->offset(), fd->int_initial_value());
 755               break;
 756       case T_INT:
 757         mirror()->int_field_put(fd->offset(), fd->int_initial_value());
 758         break;
 759       case T_FLOAT:
 760         mirror()->float_field_put(fd->offset(), fd->float_initial_value());
 761         break;
 762       case T_DOUBLE:
 763         mirror()->double_field_put(fd->offset(), fd->double_initial_value());
 764         break;
 765       case T_LONG:
 766         mirror()->long_field_put(fd->offset(), fd->long_initial_value());
 767         break;
 768       case T_OBJECT:
 769         {
 770           assert(fd->signature() == vmSymbols::string_signature(),
 771                  "just checking");
 772           if (DumpSharedSpaces && MetaspaceShared::is_archive_object(mirror())) {
 773             // Archive the String field and update the pointer.
 774             oop s = mirror()->obj_field(fd->offset());
 775             oop archived_s = StringTable::create_archived_string(s, CHECK);
 776             mirror()->obj_field_put(fd->offset(), archived_s);
 777           } else {
 778             oop string = fd->string_initial_value(CHECK);
 779             mirror()->obj_field_put(fd->offset(), string);
 780           }
 781         }
 782         break;
 783       default:
 784         THROW_MSG(vmSymbols::java_lang_ClassFormatError(),
 785                   "Illegal ConstantValue attribute in class file");
 786     }
 787   }
 788 }
 789 
 790 
 791 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) {
 792   assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already");
 793 
 794   // If the offset was read from the shared archive, it was fixed up already
 795   if (!k->is_shared()) {
 796     if (k->is_instance_klass()) {
 797       // During bootstrap, java.lang.Class wasn't loaded so static field
 798       // offsets were computed without the size added it.  Go back and
 799       // update all the static field offsets to included the size.
 800       for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) {
 801         if (fs.access_flags().is_static()) {
 802           int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields();
 803           fs.set_offset(real_offset);
 804         }
 805       }
 806     }
 807   }
 808 
 809   if (k->is_shared() && k->has_raw_archived_mirror()) {
 810     if (MetaspaceShared::open_archive_heap_region_mapped()) {
 811       bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK);
 812       assert(present, "Missing archived mirror for %s", k->external_name());
 813       return;
 814     } else {
 815       k->set_java_mirror_handle(NULL);
 816       k->clear_has_raw_archived_mirror();
 817     }
 818   }
 819   create_mirror(k, Handle(), Handle(), Handle(), CHECK);
 820 }
 821 
 822 void java_lang_Class::initialize_mirror_fields(Klass* k,
 823                                                Handle mirror,
 824                                                Handle protection_domain,
 825                                                TRAPS) {
 826   // Allocate a simple java object for a lock.
 827   // This needs to be a java object because during class initialization
 828   // it can be held across a java call.
 829   typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK);
 830   set_init_lock(mirror(), r);
 831 
 832   // Set protection domain also
 833   set_protection_domain(mirror(), protection_domain());
 834 
 835   // Initialize static fields
 836   InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK);
 837 }
 838 
 839 // Set the java.lang.Module module field in the java_lang_Class mirror
 840 void java_lang_Class::set_mirror_module_field(Klass* k, Handle mirror, Handle module, TRAPS) {
 841   if (module.is_null()) {
 842     // During startup, the module may be NULL only if java.base has not been defined yet.
 843     // Put the class on the fixup_module_list to patch later when the java.lang.Module
 844     // for java.base is known.
 845     assert(!Universe::is_module_initialized(), "Incorrect java.lang.Module pre module system initialization");
 846 
 847     bool javabase_was_defined = false;
 848     {
 849       MutexLocker m1(Module_lock, THREAD);
 850       // Keep list of classes needing java.base module fixup
 851       if (!ModuleEntryTable::javabase_defined()) {
 852         assert(k->java_mirror() != NULL, "Class's mirror is null");
 853         k->class_loader_data()->inc_keep_alive();
 854         assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized");
 855         fixup_module_field_list()->push(k);
 856       } else {
 857         javabase_was_defined = true;
 858       }
 859     }
 860 
 861     // If java.base was already defined then patch this particular class with java.base.
 862     if (javabase_was_defined) {
 863       ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry();
 864       assert(javabase_entry != NULL && javabase_entry->module() != NULL,
 865              "Setting class module field, " JAVA_BASE_NAME " should be defined");
 866       Handle javabase_handle(THREAD, javabase_entry->module());
 867       set_module(mirror(), javabase_handle());
 868     }
 869   } else {
 870     assert(Universe::is_module_initialized() ||
 871            (ModuleEntryTable::javabase_defined() &&
 872             (oopDesc::equals(module(), ModuleEntryTable::javabase_moduleEntry()->module()))),
 873            "Incorrect java.lang.Module specification while creating mirror");
 874     set_module(mirror(), module());
 875   }
 876 }
 877 
 878 // Statically allocate fixup lists because they always get created.
 879 void java_lang_Class::allocate_fixup_lists() {
 880   GrowableArray<Klass*>* mirror_list =
 881     new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true);
 882   set_fixup_mirror_list(mirror_list);
 883 
 884   GrowableArray<Klass*>* module_list =
 885     new (ResourceObj::C_HEAP, mtModule) GrowableArray<Klass*>(500, true);
 886   set_fixup_module_field_list(module_list);
 887 }
 888 
 889 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
 890                                     Handle module, Handle protection_domain, TRAPS) {
 891   assert(k != NULL, "Use create_basic_type_mirror for primitive types");
 892   assert(k->java_mirror() == NULL, "should only assign mirror once");
 893 
 894   // Use this moment of initialization to cache modifier_flags also,
 895   // to support Class.getModifiers().  Instance classes recalculate
 896   // the cached flags after the class file is parsed, but before the
 897   // class is put into the system dictionary.
 898   int computed_modifiers = k->compute_modifier_flags(CHECK);
 899   k->set_modifier_flags(computed_modifiers);
 900   // Class_klass has to be loaded because it is used to allocate
 901   // the mirror.
 902   if (SystemDictionary::Class_klass_loaded()) {
 903     // Allocate mirror (java.lang.Class instance)
 904     oop mirror_oop = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK);
 905     Handle mirror(THREAD, mirror_oop);
 906     Handle comp_mirror;
 907 
 908     // Setup indirection from mirror->klass
 909     java_lang_Class::set_klass(mirror(), k);
 910 
 911     InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
 912     assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
 913 
 914     java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
 915 
 916     // It might also have a component mirror.  This mirror must already exist.
 917     if (k->is_array_klass()) {
 918       if (k->is_typeArray_klass()) {
 919         BasicType type = TypeArrayKlass::cast(k)->element_type();
 920         comp_mirror = Handle(THREAD, Universe::java_mirror(type));
 921       } else {
 922         assert(k->is_objArray_klass(), "Must be");
 923         Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
 924         assert(element_klass != NULL, "Must have an element klass");
 925         comp_mirror = Handle(THREAD, element_klass->java_mirror());
 926       }
 927       assert(comp_mirror() != NULL, "must have a mirror");
 928 
 929       // Two-way link between the array klass and its component mirror:
 930       // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
 931       set_component_mirror(mirror(), comp_mirror());
 932       // See below for ordering dependencies between field array_klass in component mirror
 933       // and java_mirror in this klass.
 934     } else {
 935       assert(k->is_instance_klass(), "Must be");
 936 
 937       initialize_mirror_fields(k, mirror, protection_domain, THREAD);
 938       if (HAS_PENDING_EXCEPTION) {
 939         // If any of the fields throws an exception like OOM remove the klass field
 940         // from the mirror so GC doesn't follow it after the klass has been deallocated.
 941         // This mirror looks like a primitive type, which logically it is because it
 942         // it represents no class.
 943         java_lang_Class::set_klass(mirror(), NULL);
 944         return;
 945       }
 946     }
 947 
 948     // set the classLoader field in the java_lang_Class instance
 949     assert(oopDesc::equals(class_loader(), k->class_loader()), "should be same");
 950     set_class_loader(mirror(), class_loader());
 951 
 952     // Setup indirection from klass->mirror
 953     // after any exceptions can happen during allocations.
 954     k->set_java_mirror(mirror);
 955 
 956     // Set the module field in the java_lang_Class instance.  This must be done
 957     // after the mirror is set.
 958     set_mirror_module_field(k, mirror, module, THREAD);
 959 
 960     if (comp_mirror() != NULL) {
 961       // Set after k->java_mirror() is published, because compiled code running
 962       // concurrently doesn't expect a k to have a null java_mirror.
 963       release_set_array_klass(comp_mirror(), k);
 964     }
 965   } else {
 966     assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
 967     fixup_mirror_list()->push(k);
 968   }
 969 }
 970 
 971 #if INCLUDE_CDS_JAVA_HEAP
 972 // Clears mirror fields. Static final fields with initial values are reloaded
 973 // from constant pool. The object identity hash is in the object header and is
 974 // not affected.
 975 class ResetMirrorField: public FieldClosure {
 976  private:
 977   Handle _m;
 978 
 979  public:
 980   ResetMirrorField(Handle mirror) : _m(mirror) {}
 981 
 982   void do_field(fieldDescriptor* fd) {
 983     assert(DumpSharedSpaces, "dump time only");
 984     assert(_m.not_null(), "Mirror cannot be NULL");
 985 
 986     if (fd->is_static() && fd->has_initial_value()) {
 987       initialize_static_field(fd, _m, Thread::current());
 988       return;
 989     }
 990 
 991     BasicType ft = fd->field_type();
 992     switch (ft) {
 993       case T_BYTE:
 994         _m()->byte_field_put(fd->offset(), 0);
 995         break;
 996       case T_CHAR:
 997         _m()->char_field_put(fd->offset(), 0);
 998         break;
 999       case T_DOUBLE:
1000         _m()->double_field_put(fd->offset(), 0);
1001         break;
1002       case T_FLOAT:
1003         _m()->float_field_put(fd->offset(), 0);
1004         break;
1005       case T_INT:
1006         _m()->int_field_put(fd->offset(), 0);
1007         break;
1008       case T_LONG:
1009         _m()->long_field_put(fd->offset(), 0);
1010         break;
1011       case T_SHORT:
1012         _m()->short_field_put(fd->offset(), 0);
1013         break;
1014       case T_BOOLEAN:
1015         _m()->bool_field_put(fd->offset(), false);
1016         break;
1017       case T_ARRAY:
1018       case T_OBJECT: {
1019         // It might be useful to cache the String field, but
1020         // for now just clear out any reference field
1021         oop o = _m()->obj_field(fd->offset());
1022         _m()->obj_field_put(fd->offset(), NULL);
1023         break;
1024       }
1025       default:
1026         ShouldNotReachHere();
1027         break;
1028      }
1029   }
1030 };
1031 
1032 void java_lang_Class::archive_basic_type_mirrors(TRAPS) {
1033   assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1034          "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1035 
1036   for (int t = 0; t <= T_VOID; t++) {
1037     oop m = Universe::_mirrors[t];
1038     if (m != NULL) {
1039       // Update the field at _array_klass_offset to point to the relocated array klass.
1040       oop archived_m = MetaspaceShared::archive_heap_object(m, THREAD);
1041       assert(archived_m != NULL, "sanity");
1042       Klass *ak = (Klass*)(archived_m->metadata_field(_array_klass_offset));
1043       assert(ak != NULL || t == T_VOID, "should not be NULL");
1044       if (ak != NULL) {
1045         Klass *reloc_ak = MetaspaceShared::get_relocated_klass(ak);
1046         archived_m->metadata_field_put(_array_klass_offset, reloc_ak);
1047       }
1048 
1049       // Clear the fields. Just to be safe
1050       Klass *k = m->klass();
1051       Handle archived_mirror_h(THREAD, archived_m);
1052       ResetMirrorField reset(archived_mirror_h);
1053       InstanceKlass::cast(k)->do_nonstatic_fields(&reset);
1054 
1055       log_trace(cds, heap, mirror)(
1056         "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1057         type2name((BasicType)t), p2i(Universe::_mirrors[t]), p2i(archived_m));
1058 
1059       Universe::_mirrors[t] = archived_m;
1060     }
1061   }
1062 
1063   assert(Universe::_mirrors[T_INT] != NULL &&
1064          Universe::_mirrors[T_FLOAT] != NULL &&
1065          Universe::_mirrors[T_DOUBLE] != NULL &&
1066          Universe::_mirrors[T_BYTE] != NULL &&
1067          Universe::_mirrors[T_BOOLEAN] != NULL &&
1068          Universe::_mirrors[T_CHAR] != NULL &&
1069          Universe::_mirrors[T_LONG] != NULL &&
1070          Universe::_mirrors[T_SHORT] != NULL &&
1071          Universe::_mirrors[T_VOID] != NULL, "sanity");
1072 
1073   Universe::set_int_mirror(Universe::_mirrors[T_INT]);
1074   Universe::set_float_mirror(Universe::_mirrors[T_FLOAT]);
1075   Universe::set_double_mirror(Universe::_mirrors[T_DOUBLE]);
1076   Universe::set_byte_mirror(Universe::_mirrors[T_BYTE]);
1077   Universe::set_bool_mirror(Universe::_mirrors[T_BOOLEAN]);
1078   Universe::set_char_mirror(Universe::_mirrors[T_CHAR]);
1079   Universe::set_long_mirror(Universe::_mirrors[T_LONG]);
1080   Universe::set_short_mirror(Universe::_mirrors[T_SHORT]);
1081   Universe::set_void_mirror(Universe::_mirrors[T_VOID]);
1082 }
1083 
1084 //
1085 // After the mirror object is successfully archived, the archived
1086 // klass is set with _has_archived_raw_mirror flag.
1087 //
1088 // The _has_archived_raw_mirror flag is cleared at runtime when the
1089 // archived mirror is restored. If archived java heap data cannot
1090 // be used at runtime, new mirror object is created for the shared
1091 // class. The _has_archived_raw_mirror is cleared also during the process.
1092 oop java_lang_Class::archive_mirror(Klass* k, TRAPS) {
1093   assert(MetaspaceShared::is_heap_object_archiving_allowed(),
1094          "MetaspaceShared::is_heap_object_archiving_allowed() must be true");
1095 
1096   // Mirror is already archived
1097   if (k->has_raw_archived_mirror()) {
1098     assert(k->archived_java_mirror_raw() != NULL, "no archived mirror");
1099     return k->archived_java_mirror_raw();
1100   }
1101 
1102   // No mirror
1103   oop mirror = k->java_mirror();
1104   if (mirror == NULL) {
1105     return NULL;
1106   }
1107 
1108   if (k->is_instance_klass()) {
1109     InstanceKlass *ik = InstanceKlass::cast(k);
1110     assert(ik->signers() == NULL && !k->has_signer_and_not_archived(),
1111            "class with signer cannot be supported");
1112 
1113     if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() ||
1114           ik->is_shared_app_class())) {
1115       // Archiving mirror for classes from non-builtin loaders is not
1116       // supported. Clear the _java_mirror within the archived class.
1117       k->set_java_mirror_handle(NULL);
1118       return NULL;
1119     }
1120   }
1121 
1122   // Now start archiving the mirror object
1123   oop archived_mirror = MetaspaceShared::archive_heap_object(mirror, THREAD);
1124   if (archived_mirror == NULL) {
1125     return NULL;
1126   }
1127 
1128   archived_mirror = process_archived_mirror(k, mirror, archived_mirror, THREAD);
1129   if (archived_mirror == NULL) {
1130     return NULL;
1131   }
1132 
1133   k->set_archived_java_mirror_raw(archived_mirror);
1134 
1135   k->set_has_raw_archived_mirror();
1136 
1137   ResourceMark rm;
1138   log_trace(cds, heap, mirror)(
1139     "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT,
1140     k->external_name(), p2i(mirror), p2i(archived_mirror));
1141 
1142   return archived_mirror;
1143 }
1144 
1145 // The process is based on create_mirror().
1146 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror,
1147                                              oop archived_mirror,
1148                                              Thread *THREAD) {
1149   // Clear nonstatic fields in archived mirror. Some of the fields will be set
1150   // to archived metadata and objects below.
1151   Klass *c = archived_mirror->klass();
1152   Handle archived_mirror_h(THREAD, archived_mirror);
1153   ResetMirrorField reset(archived_mirror_h);
1154   InstanceKlass::cast(c)->do_nonstatic_fields(&reset);
1155 
1156   if (k->is_array_klass()) {
1157     oop archived_comp_mirror;
1158     if (k->is_typeArray_klass()) {
1159       // The primitive type mirrors are already archived. Get the archived mirror.
1160       oop comp_mirror = java_lang_Class::component_mirror(mirror);
1161       archived_comp_mirror = MetaspaceShared::find_archived_heap_object(comp_mirror);
1162       assert(archived_comp_mirror != NULL, "Must be");
1163     } else {
1164       assert(k->is_objArray_klass(), "Must be");
1165       Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1166       assert(element_klass != NULL, "Must have an element klass");
1167       archived_comp_mirror = archive_mirror(element_klass, THREAD);
1168       if (archived_comp_mirror == NULL) {
1169         return NULL;
1170       }
1171     }
1172     java_lang_Class::set_component_mirror(archived_mirror, archived_comp_mirror);
1173   } else {
1174     assert(k->is_instance_klass(), "Must be");
1175 
1176     // Reset local static fields in the mirror
1177     InstanceKlass::cast(k)->do_local_static_fields(&reset);
1178 
1179     java_lang_Class:set_init_lock(archived_mirror, NULL);
1180 
1181     set_protection_domain(archived_mirror, NULL);
1182   }
1183 
1184   // clear class loader and mirror_module_field
1185   set_class_loader(archived_mirror, NULL);
1186   set_module(archived_mirror, NULL);
1187 
1188   // The archived mirror's field at _klass_offset is still pointing to the original
1189   // klass. Updated the field in the archived mirror to point to the relocated
1190   // klass in the archive.
1191   Klass *reloc_k = MetaspaceShared::get_relocated_klass(as_Klass(mirror));
1192   log_debug(cds, heap, mirror)(
1193     "Relocate mirror metadata field at _klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1194     p2i(as_Klass(mirror)), p2i(reloc_k));
1195   archived_mirror->metadata_field_put(_klass_offset, reloc_k);
1196 
1197   // The field at _array_klass_offset is pointing to the original one dimension
1198   // higher array klass if exists. Relocate the pointer.
1199   Klass *arr = array_klass_acquire(mirror);
1200   if (arr != NULL) {
1201     Klass *reloc_arr = MetaspaceShared::get_relocated_klass(arr);
1202     log_debug(cds, heap, mirror)(
1203       "Relocate mirror metadata field at _array_klass_offset from " PTR_FORMAT " ==> " PTR_FORMAT,
1204       p2i(arr), p2i(reloc_arr));
1205     archived_mirror->metadata_field_put(_array_klass_offset, reloc_arr);
1206   }
1207   return archived_mirror;
1208 }
1209 
1210 // Returns true if the mirror is updated, false if no archived mirror
1211 // data is present. After the archived mirror object is restored, the
1212 // shared klass' _has_raw_archived_mirror flag is cleared.
1213 bool java_lang_Class::restore_archived_mirror(Klass *k,
1214                                               Handle class_loader, Handle module,
1215                                               Handle protection_domain, TRAPS) {
1216   // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1217   // see more details in SystemDictionary::resolve_preloaded_classes().
1218   if (!SystemDictionary::Class_klass_loaded()) {
1219     assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized");
1220     fixup_mirror_list()->push(k);
1221     return true;
1222   }
1223 
1224   oop m = MetaspaceShared::materialize_archived_object(k->archived_java_mirror_raw_narrow());
1225 
1226   if (m == NULL) {
1227     return false;
1228   }
1229 
1230   log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1231 
1232   // mirror is archived, restore
1233   assert(MetaspaceShared::is_archive_object(m), "must be archived mirror object");
1234   Handle mirror(THREAD, m);
1235 
1236   if (!k->is_array_klass()) {
1237     // - local static final fields with initial values were initialized at dump time
1238 
1239     // create the init_lock
1240     typeArrayOop r = oopFactory::new_typeArray(T_INT, 0, CHECK_(false));
1241     set_init_lock(mirror(), r);
1242 
1243     if (protection_domain.not_null()) {
1244       set_protection_domain(mirror(), protection_domain());
1245     }
1246   }
1247 
1248   assert(class_loader() == k->class_loader(), "should be same");
1249   if (class_loader.not_null()) {
1250     set_class_loader(mirror(), class_loader());
1251   }
1252 
1253   k->set_java_mirror(mirror);
1254   k->clear_has_raw_archived_mirror();
1255 
1256   set_mirror_module_field(k, mirror, module, THREAD);
1257 
1258   ResourceMark rm;
1259   log_trace(cds, heap, mirror)(
1260     "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1261 
1262   return true;
1263 }
1264 #endif // INCLUDE_CDS_JAVA_HEAP
1265 
1266 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1267   assert(_module_offset != 0, "must have been computed already");
1268   java_lang_Class::set_module(k->java_mirror(), module());
1269 }
1270 
1271 int  java_lang_Class::oop_size(oop java_class) {
1272   assert(_oop_size_offset != 0, "must be set");
1273   int size = java_class->int_field(_oop_size_offset);
1274   assert(size > 0, "Oop size must be greater than zero, not %d", size);
1275   return size;
1276 }
1277 
1278 int  java_lang_Class::oop_size_raw(oop java_class) {
1279   assert(_oop_size_offset != 0, "must be set");
1280   int size = java_class->int_field_raw(_oop_size_offset);
1281   assert(size > 0, "Oop size must be greater than zero, not %d", size);
1282   return size;
1283 }
1284 
1285 void java_lang_Class::set_oop_size(HeapWord* java_class, int size) {
1286   assert(_oop_size_offset != 0, "must be set");
1287   assert(size > 0, "Oop size must be greater than zero, not %d", size);
1288   *(int*)(((char*)java_class) + _oop_size_offset) = size;
1289 }
1290 
1291 int  java_lang_Class::static_oop_field_count(oop java_class) {
1292   assert(_static_oop_field_count_offset != 0, "must be set");
1293   return java_class->int_field(_static_oop_field_count_offset);
1294 }
1295 
1296 int  java_lang_Class::static_oop_field_count_raw(oop java_class) {
1297   assert(_static_oop_field_count_offset != 0, "must be set");
1298   return java_class->int_field_raw(_static_oop_field_count_offset);
1299 }
1300 
1301 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) {
1302   assert(_static_oop_field_count_offset != 0, "must be set");
1303   java_class->int_field_put(_static_oop_field_count_offset, size);
1304 }
1305 
1306 oop java_lang_Class::protection_domain(oop java_class) {
1307   assert(_protection_domain_offset != 0, "must be set");
1308   return java_class->obj_field(_protection_domain_offset);
1309 }
1310 void java_lang_Class::set_protection_domain(oop java_class, oop pd) {
1311   assert(_protection_domain_offset != 0, "must be set");
1312   java_class->obj_field_put(_protection_domain_offset, pd);
1313 }
1314 
1315 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) {
1316   assert(_component_mirror_offset != 0, "must be set");
1317     java_class->obj_field_put(_component_mirror_offset, comp_mirror);
1318   }
1319 oop java_lang_Class::component_mirror(oop java_class) {
1320   assert(_component_mirror_offset != 0, "must be set");
1321   return java_class->obj_field(_component_mirror_offset);
1322 }
1323 
1324 oop java_lang_Class::init_lock(oop java_class) {
1325   assert(_init_lock_offset != 0, "must be set");
1326   return java_class->obj_field(_init_lock_offset);
1327 }
1328 void java_lang_Class::set_init_lock(oop java_class, oop init_lock) {
1329   assert(_init_lock_offset != 0, "must be set");
1330   java_class->obj_field_put(_init_lock_offset, init_lock);
1331 }
1332 
1333 objArrayOop java_lang_Class::signers(oop java_class) {
1334   assert(_signers_offset != 0, "must be set");
1335   return (objArrayOop)java_class->obj_field(_signers_offset);
1336 }
1337 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) {
1338   assert(_signers_offset != 0, "must be set");
1339   java_class->obj_field_put(_signers_offset, (oop)signers);
1340 }
1341 
1342 
1343 void java_lang_Class::set_class_loader(oop java_class, oop loader) {
1344   // jdk7 runs Queens in bootstrapping and jdk8-9 has no coordinated pushes yet.
1345   if (_class_loader_offset != 0) {
1346     java_class->obj_field_put(_class_loader_offset, loader);
1347   }
1348 }
1349 
1350 oop java_lang_Class::class_loader(oop java_class) {
1351   assert(_class_loader_offset != 0, "must be set");
1352   return java_class->obj_field(_class_loader_offset);
1353 }
1354 
1355 oop java_lang_Class::module(oop java_class) {
1356   assert(_module_offset != 0, "must be set");
1357   return java_class->obj_field(_module_offset);
1358 }
1359 
1360 void java_lang_Class::set_module(oop java_class, oop module) {
1361   assert(_module_offset != 0, "must be set");
1362   java_class->obj_field_put(_module_offset, module);
1363 }
1364 
1365 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1366   // This should be improved by adding a field at the Java level or by
1367   // introducing a new VM klass (see comment in ClassFileParser)
1368   oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0);
1369   if (type != T_VOID) {
1370     Klass* aklass = Universe::typeArrayKlassObj(type);
1371     assert(aklass != NULL, "correct bootstrap");
1372     release_set_array_klass(java_class, aklass);
1373   }
1374 #ifdef ASSERT
1375   InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass());
1376   assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1377 #endif
1378   return java_class;
1379 }
1380 
1381 
1382 Klass* java_lang_Class::as_Klass(oop java_class) {
1383   //%note memory_2
1384   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1385   Klass* k = ((Klass*)java_class->metadata_field(_klass_offset));
1386   assert(k == NULL || k->is_klass(), "type check");
1387   return k;
1388 }
1389 
1390 Klass* java_lang_Class::as_Klass_raw(oop java_class) {
1391   //%note memory_2
1392   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1393   Klass* k = ((Klass*)java_class->metadata_field_raw(_klass_offset));
1394   assert(k == NULL || k->is_klass(), "type check");
1395   return k;
1396 }
1397 
1398 
1399 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1400   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1401   java_class->metadata_field_put(_klass_offset, klass);
1402 }
1403 
1404 
1405 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1406   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1407   Symbol* name = NULL;
1408   bool is_instance = false;
1409   if (is_primitive(java_class)) {
1410     name = vmSymbols::type_signature(primitive_type(java_class));
1411   } else {
1412     Klass* k = as_Klass(java_class);
1413     is_instance = k->is_instance_klass();
1414     name = k->name();
1415   }
1416   if (name == NULL) {
1417     st->print("<null>");
1418     return;
1419   }
1420   if (is_instance)  st->print("L");
1421   st->write((char*) name->base(), (int) name->utf8_length());
1422   if (is_instance)  st->print(";");
1423 }
1424 
1425 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) {
1426   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1427   Symbol* name;
1428   if (is_primitive(java_class)) {
1429     name = vmSymbols::type_signature(primitive_type(java_class));
1430     // Because this can create a new symbol, the caller has to decrement
1431     // the refcount, so make adjustment here and below for symbols returned
1432     // that are not created or incremented due to a successful lookup.
1433     name->increment_refcount();
1434   } else {
1435     Klass* k = as_Klass(java_class);
1436     if (!k->is_instance_klass()) {
1437       name = k->name();
1438       name->increment_refcount();
1439     } else {
1440       ResourceMark rm;
1441       const char* sigstr = k->signature_name();
1442       int         siglen = (int) strlen(sigstr);
1443       if (!intern_if_not_found) {
1444         name = SymbolTable::probe(sigstr, siglen);
1445       } else {
1446         name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
1447       }
1448     }
1449   }
1450   return name;
1451 }
1452 
1453 // Returns the Java name for this Java mirror (Resource allocated)
1454 // See Klass::external_name().
1455 // For primitive type Java mirrors, its type name is returned.
1456 const char* java_lang_Class::as_external_name(oop java_class) {
1457   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1458   const char* name = NULL;
1459   if (is_primitive(java_class)) {
1460     name = type2name(primitive_type(java_class));
1461   } else {
1462     name = as_Klass(java_class)->external_name();
1463   }
1464   if (name == NULL) {
1465     name = "<null>";
1466   }
1467   return name;
1468 }
1469 
1470 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1471   Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1472   assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass");
1473   return k;
1474 }
1475 
1476 
1477 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1478   assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1479   java_class->release_metadata_field_put(_array_klass_offset, klass);
1480 }
1481 
1482 
1483 bool java_lang_Class::is_primitive(oop java_class) {
1484   // should assert:
1485   //assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1486   bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL);
1487 
1488 #ifdef ASSERT
1489   if (is_primitive) {
1490     Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset));
1491     assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()),
1492         "Should be either the T_VOID primitive or a java primitive");
1493   }
1494 #endif
1495 
1496   return is_primitive;
1497 }
1498 
1499 
1500 BasicType java_lang_Class::primitive_type(oop java_class) {
1501   assert(java_lang_Class::is_primitive(java_class), "just checking");
1502   Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1503   BasicType type = T_VOID;
1504   if (ak != NULL) {
1505     // Note: create_basic_type_mirror above initializes ak to a non-null value.
1506     type = ArrayKlass::cast(ak)->element_type();
1507   } else {
1508     assert(oopDesc::equals(java_class, Universe::void_mirror()), "only valid non-array primitive");
1509   }
1510   assert(oopDesc::equals(Universe::java_mirror(type), java_class), "must be consistent");
1511   return type;
1512 }
1513 
1514 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) {
1515   assert(java_lang_Class::is_instance(java_class), "must be a Class object");
1516   if (is_primitive(java_class)) {
1517     if (reference_klass != NULL)
1518       (*reference_klass) = NULL;
1519     return primitive_type(java_class);
1520   } else {
1521     if (reference_klass != NULL)
1522       (*reference_klass) = as_Klass(java_class);
1523     return T_OBJECT;
1524   }
1525 }
1526 
1527 
1528 oop java_lang_Class::primitive_mirror(BasicType t) {
1529   oop mirror = Universe::java_mirror(t);
1530   assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class");
1531   assert(java_lang_Class::is_primitive(mirror), "must be primitive");
1532   return mirror;
1533 }
1534 
1535 bool java_lang_Class::offsets_computed = false;
1536 int  java_lang_Class::classRedefinedCount_offset = -1;
1537 
1538 #define CLASS_FIELDS_DO(macro) \
1539   macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature,         false) ; \
1540   macro(_class_loader_offset,       k, "classLoader",         classloader_signature, false); \
1541   macro(_component_mirror_offset,   k, "componentType",       class_signature,       false); \
1542   macro(_module_offset,             k, "module",              module_signature,      false)
1543 
1544 void java_lang_Class::compute_offsets() {
1545   if (offsets_computed) {
1546     return;
1547   }
1548 
1549   offsets_computed = true;
1550 
1551   InstanceKlass* k = SystemDictionary::Class_klass();
1552   CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1553 
1554   // Init lock is a C union with component_mirror.  Only instanceKlass mirrors have
1555   // init_lock and only ArrayKlass mirrors have component_mirror.  Since both are oops
1556   // GC treats them the same.
1557   _init_lock_offset = _component_mirror_offset;
1558 
1559   CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1560 }
1561 
1562 #if INCLUDE_CDS
1563 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1564   f->do_u4((u4*)&offsets_computed);
1565   f->do_u4((u4*)&_init_lock_offset);
1566 
1567   CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1568 
1569   CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1570 }
1571 #endif
1572 
1573 int java_lang_Class::classRedefinedCount(oop the_class_mirror) {
1574   if (classRedefinedCount_offset == -1) {
1575     // If we don't have an offset for it then just return -1 as a marker.
1576     return -1;
1577   }
1578 
1579   return the_class_mirror->int_field(classRedefinedCount_offset);
1580 }
1581 
1582 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) {
1583   if (classRedefinedCount_offset == -1) {
1584     // If we don't have an offset for it then nothing to set.
1585     return;
1586   }
1587 
1588   the_class_mirror->int_field_put(classRedefinedCount_offset, value);
1589 }
1590 
1591 
1592 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the
1593 //       platform thread structure, and a eetop offset which was used for thread
1594 //       local storage (and unused by the HotSpot VM). In JDK1.2 the two structures
1595 //       merged, so in the HotSpot VM we just use the eetop field for the thread
1596 //       instead of the privateInfo_offset.
1597 //
1598 // Note: The stackSize field is only present starting in 1.4.
1599 
1600 int java_lang_Thread::_name_offset = 0;
1601 int java_lang_Thread::_group_offset = 0;
1602 int java_lang_Thread::_contextClassLoader_offset = 0;
1603 int java_lang_Thread::_inheritedAccessControlContext_offset = 0;
1604 int java_lang_Thread::_priority_offset = 0;
1605 int java_lang_Thread::_eetop_offset = 0;
1606 int java_lang_Thread::_daemon_offset = 0;
1607 int java_lang_Thread::_stillborn_offset = 0;
1608 int java_lang_Thread::_stackSize_offset = 0;
1609 int java_lang_Thread::_tid_offset = 0;
1610 int java_lang_Thread::_thread_status_offset = 0;
1611 int java_lang_Thread::_park_blocker_offset = 0;
1612 int java_lang_Thread::_park_event_offset = 0 ;
1613 
1614 #define THREAD_FIELDS_DO(macro) \
1615   macro(_name_offset,          k, vmSymbols::name_name(), string_signature, false); \
1616   macro(_group_offset,         k, vmSymbols::group_name(), threadgroup_signature, false); \
1617   macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \
1618   macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \
1619   macro(_priority_offset,      k, vmSymbols::priority_name(), int_signature, false); \
1620   macro(_daemon_offset,        k, vmSymbols::daemon_name(), bool_signature, false); \
1621   macro(_eetop_offset,         k, "eetop", long_signature, false); \
1622   macro(_stillborn_offset,     k, "stillborn", bool_signature, false); \
1623   macro(_stackSize_offset,     k, "stackSize", long_signature, false); \
1624   macro(_tid_offset,           k, "tid", long_signature, false); \
1625   macro(_thread_status_offset, k, "threadStatus", int_signature, false); \
1626   macro(_park_blocker_offset,  k, "parkBlocker", object_signature, false); \
1627   macro(_park_event_offset,    k, "nativeParkEventPointer", long_signature, false)
1628 
1629 void java_lang_Thread::compute_offsets() {
1630   assert(_group_offset == 0, "offsets should be initialized only once");
1631 
1632   InstanceKlass* k = SystemDictionary::Thread_klass();
1633   THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1634 }
1635 
1636 #if INCLUDE_CDS
1637 void java_lang_Thread::serialize_offsets(SerializeClosure* f) {
1638   THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1639 }
1640 #endif
1641 
1642 JavaThread* java_lang_Thread::thread(oop java_thread) {
1643   return (JavaThread*)java_thread->address_field(_eetop_offset);
1644 }
1645 
1646 
1647 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) {
1648   java_thread->address_field_put(_eetop_offset, (address)thread);
1649 }
1650 
1651 
1652 oop java_lang_Thread::name(oop java_thread) {
1653   return java_thread->obj_field(_name_offset);
1654 }
1655 
1656 
1657 void java_lang_Thread::set_name(oop java_thread, oop name) {
1658   java_thread->obj_field_put(_name_offset, name);
1659 }
1660 
1661 
1662 ThreadPriority java_lang_Thread::priority(oop java_thread) {
1663   return (ThreadPriority)java_thread->int_field(_priority_offset);
1664 }
1665 
1666 
1667 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) {
1668   java_thread->int_field_put(_priority_offset, priority);
1669 }
1670 
1671 
1672 oop java_lang_Thread::threadGroup(oop java_thread) {
1673   return java_thread->obj_field(_group_offset);
1674 }
1675 
1676 
1677 bool java_lang_Thread::is_stillborn(oop java_thread) {
1678   return java_thread->bool_field(_stillborn_offset) != 0;
1679 }
1680 
1681 
1682 // We never have reason to turn the stillborn bit off
1683 void java_lang_Thread::set_stillborn(oop java_thread) {
1684   java_thread->bool_field_put(_stillborn_offset, true);
1685 }
1686 
1687 
1688 bool java_lang_Thread::is_alive(oop java_thread) {
1689   JavaThread* thr = java_lang_Thread::thread(java_thread);
1690   return (thr != NULL);
1691 }
1692 
1693 
1694 bool java_lang_Thread::is_daemon(oop java_thread) {
1695   return java_thread->bool_field(_daemon_offset) != 0;
1696 }
1697 
1698 
1699 void java_lang_Thread::set_daemon(oop java_thread) {
1700   java_thread->bool_field_put(_daemon_offset, true);
1701 }
1702 
1703 oop java_lang_Thread::context_class_loader(oop java_thread) {
1704   return java_thread->obj_field(_contextClassLoader_offset);
1705 }
1706 
1707 oop java_lang_Thread::inherited_access_control_context(oop java_thread) {
1708   return java_thread->obj_field(_inheritedAccessControlContext_offset);
1709 }
1710 
1711 
1712 jlong java_lang_Thread::stackSize(oop java_thread) {
1713   if (_stackSize_offset > 0) {
1714     return java_thread->long_field(_stackSize_offset);
1715   } else {
1716     return 0;
1717   }
1718 }
1719 
1720 // Write the thread status value to threadStatus field in java.lang.Thread java class.
1721 void java_lang_Thread::set_thread_status(oop java_thread,
1722                                          java_lang_Thread::ThreadStatus status) {
1723   // The threadStatus is only present starting in 1.5
1724   if (_thread_status_offset > 0) {
1725     java_thread->int_field_put(_thread_status_offset, status);
1726   }
1727 }
1728 
1729 // Read thread status value from threadStatus field in java.lang.Thread java class.
1730 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) {
1731   // Make sure the caller is operating on behalf of the VM or is
1732   // running VM code (state == _thread_in_vm).
1733   assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() ||
1734          JavaThread::current()->thread_state() == _thread_in_vm,
1735          "Java Thread is not running in vm");
1736   // The threadStatus is only present starting in 1.5
1737   if (_thread_status_offset > 0) {
1738     return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1739   } else {
1740     // All we can easily figure out is if it is alive, but that is
1741     // enough info for a valid unknown status.
1742     // These aren't restricted to valid set ThreadStatus values, so
1743     // use JVMTI values and cast.
1744     JavaThread* thr = java_lang_Thread::thread(java_thread);
1745     if (thr == NULL) {
1746       // the thread hasn't run yet or is in the process of exiting
1747       return NEW;
1748     }
1749     return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE;
1750   }
1751 }
1752 
1753 
1754 jlong java_lang_Thread::thread_id(oop java_thread) {
1755   // The thread ID field is only present starting in 1.5
1756   if (_tid_offset > 0) {
1757     return java_thread->long_field(_tid_offset);
1758   } else {
1759     return 0;
1760   }
1761 }
1762 
1763 oop java_lang_Thread::park_blocker(oop java_thread) {
1764   assert(JDK_Version::current().supports_thread_park_blocker() &&
1765          _park_blocker_offset != 0, "Must support parkBlocker field");
1766 
1767   if (_park_blocker_offset > 0) {
1768     return java_thread->obj_field(_park_blocker_offset);
1769   }
1770 
1771   return NULL;
1772 }
1773 
1774 jlong java_lang_Thread::park_event(oop java_thread) {
1775   if (_park_event_offset > 0) {
1776     return java_thread->long_field(_park_event_offset);
1777   }
1778   return 0;
1779 }
1780 
1781 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) {
1782   if (_park_event_offset > 0) {
1783     java_thread->long_field_put(_park_event_offset, ptr);
1784     return true;
1785   }
1786   return false;
1787 }
1788 
1789 
1790 const char* java_lang_Thread::thread_status_name(oop java_thread) {
1791   assert(_thread_status_offset != 0, "Must have thread status");
1792   ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset);
1793   switch (status) {
1794     case NEW                      : return "NEW";
1795     case RUNNABLE                 : return "RUNNABLE";
1796     case SLEEPING                 : return "TIMED_WAITING (sleeping)";
1797     case IN_OBJECT_WAIT           : return "WAITING (on object monitor)";
1798     case IN_OBJECT_WAIT_TIMED     : return "TIMED_WAITING (on object monitor)";
1799     case PARKED                   : return "WAITING (parking)";
1800     case PARKED_TIMED             : return "TIMED_WAITING (parking)";
1801     case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)";
1802     case TERMINATED               : return "TERMINATED";
1803     default                       : return "UNKNOWN";
1804   };
1805 }
1806 int java_lang_ThreadGroup::_parent_offset = 0;
1807 int java_lang_ThreadGroup::_name_offset = 0;
1808 int java_lang_ThreadGroup::_threads_offset = 0;
1809 int java_lang_ThreadGroup::_groups_offset = 0;
1810 int java_lang_ThreadGroup::_maxPriority_offset = 0;
1811 int java_lang_ThreadGroup::_destroyed_offset = 0;
1812 int java_lang_ThreadGroup::_daemon_offset = 0;
1813 int java_lang_ThreadGroup::_nthreads_offset = 0;
1814 int java_lang_ThreadGroup::_ngroups_offset = 0;
1815 
1816 oop  java_lang_ThreadGroup::parent(oop java_thread_group) {
1817   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1818   return java_thread_group->obj_field(_parent_offset);
1819 }
1820 
1821 // ("name as oop" accessor is not necessary)
1822 
1823 const char* java_lang_ThreadGroup::name(oop java_thread_group) {
1824   oop name = java_thread_group->obj_field(_name_offset);
1825   // ThreadGroup.name can be null
1826   if (name != NULL) {
1827     return java_lang_String::as_utf8_string(name);
1828   }
1829   return NULL;
1830 }
1831 
1832 int java_lang_ThreadGroup::nthreads(oop java_thread_group) {
1833   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1834   return java_thread_group->int_field(_nthreads_offset);
1835 }
1836 
1837 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) {
1838   oop threads = java_thread_group->obj_field(_threads_offset);
1839   assert(threads != NULL, "threadgroups should have threads");
1840   assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code
1841   return objArrayOop(threads);
1842 }
1843 
1844 int java_lang_ThreadGroup::ngroups(oop java_thread_group) {
1845   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1846   return java_thread_group->int_field(_ngroups_offset);
1847 }
1848 
1849 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) {
1850   oop groups = java_thread_group->obj_field(_groups_offset);
1851   assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code
1852   return objArrayOop(groups);
1853 }
1854 
1855 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) {
1856   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1857   return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset);
1858 }
1859 
1860 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) {
1861   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1862   return java_thread_group->bool_field(_destroyed_offset) != 0;
1863 }
1864 
1865 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) {
1866   assert(oopDesc::is_oop(java_thread_group), "thread group must be oop");
1867   return java_thread_group->bool_field(_daemon_offset) != 0;
1868 }
1869 
1870 #define THREADGROUP_FIELDS_DO(macro) \
1871   macro(_parent_offset,      k, vmSymbols::parent_name(),      threadgroup_signature,       false); \
1872   macro(_name_offset,        k, vmSymbols::name_name(),        string_signature,            false); \
1873   macro(_threads_offset,     k, vmSymbols::threads_name(),     thread_array_signature,      false); \
1874   macro(_groups_offset,      k, vmSymbols::groups_name(),      threadgroup_array_signature, false); \
1875   macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature,               false); \
1876   macro(_destroyed_offset,   k, vmSymbols::destroyed_name(),   bool_signature,              false); \
1877   macro(_daemon_offset,      k, vmSymbols::daemon_name(),      bool_signature,              false); \
1878   macro(_nthreads_offset,    k, vmSymbols::nthreads_name(),    int_signature,               false); \
1879   macro(_ngroups_offset,     k, vmSymbols::ngroups_name(),     int_signature,               false)
1880 
1881 void java_lang_ThreadGroup::compute_offsets() {
1882   assert(_parent_offset == 0, "offsets should be initialized only once");
1883 
1884   InstanceKlass* k = SystemDictionary::ThreadGroup_klass();
1885   THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1886 }
1887 
1888 #if INCLUDE_CDS
1889 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) {
1890   THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1891 }
1892 #endif
1893 
1894 #define THROWABLE_FIELDS_DO(macro) \
1895   macro(backtrace_offset,     k, "backtrace",     object_signature,                  false); \
1896   macro(detailMessage_offset, k, "detailMessage", string_signature,                  false); \
1897   macro(stackTrace_offset,    k, "stackTrace",    java_lang_StackTraceElement_array, false); \
1898   macro(depth_offset,         k, "depth",         int_signature,                     false); \
1899   macro(static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
1900 
1901 void java_lang_Throwable::compute_offsets() {
1902   InstanceKlass* k = SystemDictionary::Throwable_klass();
1903   THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1904 }
1905 
1906 #if INCLUDE_CDS
1907 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
1908   THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1909 }
1910 #endif
1911 
1912 oop java_lang_Throwable::unassigned_stacktrace() {
1913   InstanceKlass* ik = SystemDictionary::Throwable_klass();
1914   oop base = ik->static_field_base_raw();
1915   return base->obj_field(static_unassigned_stacktrace_offset);
1916 }
1917 
1918 oop java_lang_Throwable::backtrace(oop throwable) {
1919   return throwable->obj_field_acquire(backtrace_offset);
1920 }
1921 
1922 
1923 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
1924   throwable->release_obj_field_put(backtrace_offset, value);
1925 }
1926 
1927 int java_lang_Throwable::depth(oop throwable) {
1928   return throwable->int_field(depth_offset);
1929 }
1930 
1931 void java_lang_Throwable::set_depth(oop throwable, int value) {
1932   throwable->int_field_put(depth_offset, value);
1933 }
1934 
1935 oop java_lang_Throwable::message(oop throwable) {
1936   return throwable->obj_field(detailMessage_offset);
1937 }
1938 
1939 
1940 // Return Symbol for detailed_message or NULL
1941 Symbol* java_lang_Throwable::detail_message(oop throwable) {
1942   PRESERVE_EXCEPTION_MARK;  // Keep original exception
1943   oop detailed_message = java_lang_Throwable::message(throwable);
1944   if (detailed_message != NULL) {
1945     return java_lang_String::as_symbol(detailed_message, THREAD);
1946   }
1947   return NULL;
1948 }
1949 
1950 void java_lang_Throwable::set_message(oop throwable, oop value) {
1951   throwable->obj_field_put(detailMessage_offset, value);
1952 }
1953 
1954 
1955 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) {
1956   throwable->obj_field_put(stackTrace_offset, st_element_array);
1957 }
1958 
1959 void java_lang_Throwable::clear_stacktrace(oop throwable) {
1960   set_stacktrace(throwable, NULL);
1961 }
1962 
1963 
1964 void java_lang_Throwable::print(oop throwable, outputStream* st) {
1965   ResourceMark rm;
1966   Klass* k = throwable->klass();
1967   assert(k != NULL, "just checking");
1968   st->print("%s", k->external_name());
1969   oop msg = message(throwable);
1970   if (msg != NULL) {
1971     st->print(": %s", java_lang_String::as_utf8_string(msg));
1972   }
1973 }
1974 
1975 // After this many redefines, the stack trace is unreliable.
1976 const int MAX_VERSION = USHRT_MAX;
1977 
1978 static inline bool version_matches(Method* method, int version) {
1979   assert(version < MAX_VERSION, "version is too big");
1980   return method != NULL && (method->constants()->version() == version);
1981 }
1982 
1983 
1984 // This class provides a simple wrapper over the internal structure of
1985 // exception backtrace to insulate users of the backtrace from needing
1986 // to know what it looks like.
1987 class BacktraceBuilder: public StackObj {
1988  friend class BacktraceIterator;
1989  private:
1990   Handle          _backtrace;
1991   objArrayOop     _head;
1992   typeArrayOop    _methods;
1993   typeArrayOop    _bcis;
1994   objArrayOop     _mirrors;
1995   typeArrayOop    _names; // needed to insulate method name against redefinition
1996   int             _index;
1997   NoSafepointVerifier _nsv;
1998 
1999   enum {
2000     trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2001     trace_bcis_offset    = java_lang_Throwable::trace_bcis_offset,
2002     trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2003     trace_names_offset   = java_lang_Throwable::trace_names_offset,
2004     trace_next_offset    = java_lang_Throwable::trace_next_offset,
2005     trace_size           = java_lang_Throwable::trace_size,
2006     trace_chunk_size     = java_lang_Throwable::trace_chunk_size
2007   };
2008 
2009   // get info out of chunks
2010   static typeArrayOop get_methods(objArrayHandle chunk) {
2011     typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2012     assert(methods != NULL, "method array should be initialized in backtrace");
2013     return methods;
2014   }
2015   static typeArrayOop get_bcis(objArrayHandle chunk) {
2016     typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2017     assert(bcis != NULL, "bci array should be initialized in backtrace");
2018     return bcis;
2019   }
2020   static objArrayOop get_mirrors(objArrayHandle chunk) {
2021     objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2022     assert(mirrors != NULL, "mirror array should be initialized in backtrace");
2023     return mirrors;
2024   }
2025   static typeArrayOop get_names(objArrayHandle chunk) {
2026     typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2027     assert(names != NULL, "names array should be initialized in backtrace");
2028     return names;
2029   }
2030 
2031  public:
2032 
2033   // constructor for new backtrace
2034   BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL) {
2035     expand(CHECK);
2036     _backtrace = Handle(THREAD, _head);
2037     _index = 0;
2038   }
2039 
2040   BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2041     _methods = get_methods(backtrace);
2042     _bcis = get_bcis(backtrace);
2043     _mirrors = get_mirrors(backtrace);
2044     _names = get_names(backtrace);
2045     assert(_methods->length() == _bcis->length() &&
2046            _methods->length() == _mirrors->length() &&
2047            _mirrors->length() == _names->length(),
2048            "method and source information arrays should match");
2049 
2050     // head is the preallocated backtrace
2051     _head = backtrace();
2052     _backtrace = Handle(thread, _head);
2053     _index = 0;
2054   }
2055 
2056   void expand(TRAPS) {
2057     objArrayHandle old_head(THREAD, _head);
2058     PauseNoSafepointVerifier pnsv(&_nsv);
2059 
2060     objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2061     objArrayHandle new_head(THREAD, head);
2062 
2063     typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2064     typeArrayHandle new_methods(THREAD, methods);
2065 
2066     typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2067     typeArrayHandle new_bcis(THREAD, bcis);
2068 
2069     objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2070     objArrayHandle new_mirrors(THREAD, mirrors);
2071 
2072     typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2073     typeArrayHandle new_names(THREAD, names);
2074 
2075     if (!old_head.is_null()) {
2076       old_head->obj_at_put(trace_next_offset, new_head());
2077     }
2078     new_head->obj_at_put(trace_methods_offset, new_methods());
2079     new_head->obj_at_put(trace_bcis_offset, new_bcis());
2080     new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2081     new_head->obj_at_put(trace_names_offset, new_names());
2082 
2083     _head    = new_head();
2084     _methods = new_methods();
2085     _bcis = new_bcis();
2086     _mirrors = new_mirrors();
2087     _names  = new_names();
2088     _index = 0;
2089   }
2090 
2091   oop backtrace() {
2092     return _backtrace();
2093   }
2094 
2095   inline void push(Method* method, int bci, TRAPS) {
2096     // Smear the -1 bci to 0 since the array only holds unsigned
2097     // shorts.  The later line number lookup would just smear the -1
2098     // to a 0 even if it could be recorded.
2099     if (bci == SynchronizationEntryBCI) bci = 0;
2100 
2101     if (_index >= trace_chunk_size) {
2102       methodHandle mhandle(THREAD, method);
2103       expand(CHECK);
2104       method = mhandle();
2105     }
2106 
2107     _methods->ushort_at_put(_index, method->orig_method_idnum());
2108     _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2109 
2110     // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2111     // klass owning the symbols alive so their refcounts aren't decremented.
2112     Symbol* name = method->name();
2113     _names->symbol_at_put(_index, name);
2114 
2115     // We need to save the mirrors in the backtrace to keep the class
2116     // from being unloaded while we still have this stack trace.
2117     assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
2118     _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
2119     _index++;
2120   }
2121 
2122 };
2123 
2124 struct BacktraceElement : public StackObj {
2125   int _method_id;
2126   int _bci;
2127   int _version;
2128   Symbol* _name;
2129   Handle _mirror;
2130   BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2131                    _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2132 };
2133 
2134 class BacktraceIterator : public StackObj {
2135   int _index;
2136   objArrayHandle  _result;
2137   objArrayHandle  _mirrors;
2138   typeArrayHandle _methods;
2139   typeArrayHandle _bcis;
2140   typeArrayHandle _names;
2141 
2142   void init(objArrayHandle result, Thread* thread) {
2143     // Get method id, bci, version and mirror from chunk
2144     _result = result;
2145     if (_result.not_null()) {
2146       _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2147       _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2148       _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2149       _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2150       _index = 0;
2151     }
2152   }
2153  public:
2154   BacktraceIterator(objArrayHandle result, Thread* thread) {
2155     init(result, thread);
2156     assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2157   }
2158 
2159   BacktraceElement next(Thread* thread) {
2160     BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2161                         _methods->ushort_at(_index),
2162                         Backtrace::version_at(_bcis->int_at(_index)),
2163                         Backtrace::bci_at(_bcis->int_at(_index)),
2164                         _names->symbol_at(_index));
2165     _index++;
2166 
2167     if (_index >= java_lang_Throwable::trace_chunk_size) {
2168       int next_offset = java_lang_Throwable::trace_next_offset;
2169       // Get next chunk
2170       objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2171       init(result, thread);
2172     }
2173     return e;
2174   }
2175 
2176   bool repeat() {
2177     return _result.not_null() && _mirrors->obj_at(_index) != NULL;
2178   }
2179 };
2180 
2181 
2182 // Print stack trace element to resource allocated buffer
2183 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2184                                           int version, int bci, Symbol* name) {
2185   ResourceMark rm;
2186 
2187   // Get strings and string lengths
2188   InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
2189   const char* klass_name  = holder->external_name();
2190   int buf_len = (int)strlen(klass_name);
2191 
2192   char* method_name = name->as_C_string();
2193   buf_len += (int)strlen(method_name);
2194 
2195   char* source_file_name = NULL;
2196   Symbol* source = Backtrace::get_source_file_name(holder, version);
2197   if (source != NULL) {
2198     source_file_name = source->as_C_string();
2199     buf_len += (int)strlen(source_file_name);
2200   }
2201 
2202   char *module_name = NULL, *module_version = NULL;
2203   ModuleEntry* module = holder->module();
2204   if (module->is_named()) {
2205     module_name = module->name()->as_C_string();
2206     buf_len += (int)strlen(module_name);
2207     if (module->version() != NULL) {
2208       module_version = module->version()->as_C_string();
2209       buf_len += (int)strlen(module_version);
2210     }
2211   }
2212 
2213   // Allocate temporary buffer with extra space for formatting and line number
2214   char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
2215 
2216   // Print stack trace line in buffer
2217   sprintf(buf, "\tat %s.%s(", klass_name, method_name);
2218 
2219   // Print module information
2220   if (module_name != NULL) {
2221     if (module_version != NULL) {
2222       sprintf(buf + (int)strlen(buf), "%s@%s/", module_name, module_version);
2223     } else {
2224       sprintf(buf + (int)strlen(buf), "%s/", module_name);
2225     }
2226   }
2227 
2228   // The method can be NULL if the requested class version is gone
2229   Method* method = holder->method_with_orig_idnum(method_id, version);
2230   if (!version_matches(method, version)) {
2231     strcat(buf, "Redefined)");
2232   } else {
2233     int line_number = Backtrace::get_line_number(method, bci);
2234     if (line_number == -2) {
2235       strcat(buf, "Native Method)");
2236     } else {
2237       if (source_file_name != NULL && (line_number != -1)) {
2238         // Sourcename and linenumber
2239         sprintf(buf + (int)strlen(buf), "%s:%d)", source_file_name, line_number);
2240       } else if (source_file_name != NULL) {
2241         // Just sourcename
2242         sprintf(buf + (int)strlen(buf), "%s)", source_file_name);
2243       } else {
2244         // Neither sourcename nor linenumber
2245         sprintf(buf + (int)strlen(buf), "Unknown Source)");
2246       }
2247       CompiledMethod* nm = method->code();
2248       if (WizardMode && nm != NULL) {
2249         sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
2250       }
2251     }
2252   }
2253 
2254   st->print_cr("%s", buf);
2255 }
2256 
2257 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
2258   Handle mirror (Thread::current(),  method->method_holder()->java_mirror());
2259   int method_id = method->orig_method_idnum();
2260   int version = method->constants()->version();
2261   print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2262 }
2263 
2264 /**
2265  * Print the throwable message and its stack trace plus all causes by walking the
2266  * cause chain.  The output looks the same as of Throwable.printStackTrace().
2267  */
2268 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2269   // First, print the message.
2270   print(throwable(), st);
2271   st->cr();
2272 
2273   // Now print the stack trace.
2274   Thread* THREAD = Thread::current();
2275   while (throwable.not_null()) {
2276     objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2277     if (result.is_null()) {
2278       st->print_raw_cr("\t<<no stack trace available>>");
2279       return;
2280     }
2281     BacktraceIterator iter(result, THREAD);
2282 
2283     while (iter.repeat()) {
2284       BacktraceElement bte = iter.next(THREAD);
2285       print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2286     }
2287     {
2288       // Call getCause() which doesn't necessarily return the _cause field.
2289       EXCEPTION_MARK;
2290       JavaValue cause(T_OBJECT);
2291       JavaCalls::call_virtual(&cause,
2292                               throwable,
2293                               throwable->klass(),
2294                               vmSymbols::getCause_name(),
2295                               vmSymbols::void_throwable_signature(),
2296                               THREAD);
2297       // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
2298       if (HAS_PENDING_EXCEPTION) {
2299         CLEAR_PENDING_EXCEPTION;
2300         throwable = Handle();
2301       } else {
2302         throwable = Handle(THREAD, (oop) cause.get_jobject());
2303         if (throwable.not_null()) {
2304           st->print("Caused by: ");
2305           print(throwable(), st);
2306           st->cr();
2307         }
2308       }
2309     }
2310   }
2311 }
2312 
2313 /**
2314  * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace().
2315  */
2316 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) {
2317   assert(throwable->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected");
2318   JavaValue result(T_VOID);
2319   JavaCalls::call_virtual(&result,
2320                           throwable,
2321                           SystemDictionary::Throwable_klass(),
2322                           vmSymbols::printStackTrace_name(),
2323                           vmSymbols::void_method_signature(),
2324                           THREAD);
2325 }
2326 
2327 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) {
2328   if (!StackTraceInThrowable) return;
2329   ResourceMark rm(THREAD);
2330 
2331   // Start out by clearing the backtrace for this object, in case the VM
2332   // runs out of memory while allocating the stack trace
2333   set_backtrace(throwable(), NULL);
2334   // Clear lazily constructed Java level stacktrace if refilling occurs
2335   // This is unnecessary in 1.7+ but harmless
2336   clear_stacktrace(throwable());
2337 
2338   int max_depth = MaxJavaStackTraceDepth;
2339   JavaThread* thread = (JavaThread*)THREAD;
2340 
2341   BacktraceBuilder bt(CHECK);
2342 
2343   // If there is no Java frame just return the method that was being called
2344   // with bci 0
2345   if (!thread->has_last_Java_frame()) {
2346     if (max_depth >= 1 && method() != NULL) {
2347       bt.push(method(), 0, CHECK);
2348       log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1);
2349       set_depth(throwable(), 1);
2350       set_backtrace(throwable(), bt.backtrace());
2351     }
2352     return;
2353   }
2354 
2355   // Instead of using vframe directly, this version of fill_in_stack_trace
2356   // basically handles everything by hand. This significantly improved the
2357   // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows.
2358   // See bug 6333838 for  more details.
2359   // The "ASSERT" here is to verify this method generates the exactly same stack
2360   // trace as utilizing vframe.
2361 #ifdef ASSERT
2362   vframeStream st(thread);
2363   methodHandle st_method(THREAD, st.method());
2364 #endif
2365   int total_count = 0;
2366   RegisterMap map(thread, false);
2367   int decode_offset = 0;
2368   CompiledMethod* nm = NULL;
2369   bool skip_fillInStackTrace_check = false;
2370   bool skip_throwableInit_check = false;
2371   bool skip_hidden = !ShowHiddenFrames;
2372 
2373   for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) {
2374     Method* method = NULL;
2375     int bci = 0;
2376 
2377     // Compiled java method case.
2378     if (decode_offset != 0) {
2379       DebugInfoReadStream stream(nm, decode_offset);
2380       decode_offset = stream.read_int();
2381       method = (Method*)nm->metadata_at(stream.read_int());
2382       bci = stream.read_bci();
2383     } else {
2384       if (fr.is_first_frame()) break;
2385       address pc = fr.pc();
2386       if (fr.is_interpreted_frame()) {
2387         address bcp = fr.interpreter_frame_bcp();
2388         method = fr.interpreter_frame_method();
2389         bci =  method->bci_from(bcp);
2390         fr = fr.sender(&map);
2391       } else {
2392         CodeBlob* cb = fr.cb();
2393         // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL
2394         // but non nmethod
2395         fr = fr.sender(&map);
2396         if (cb == NULL || !cb->is_compiled()) {
2397           continue;
2398         }
2399         nm = cb->as_compiled_method();
2400         if (nm->method()->is_native()) {
2401           method = nm->method();
2402           bci = 0;
2403         } else {
2404           PcDesc* pd = nm->pc_desc_at(pc);
2405           decode_offset = pd->scope_decode_offset();
2406           // if decode_offset is not equal to 0, it will execute the
2407           // "compiled java method case" at the beginning of the loop.
2408           continue;
2409         }
2410       }
2411     }
2412 #ifdef ASSERT
2413     assert(st_method() == method && st.bci() == bci,
2414            "Wrong stack trace");
2415     st.next();
2416     // vframeStream::method isn't GC-safe so store off a copy
2417     // of the Method* in case we GC.
2418     if (!st.at_end()) {
2419       st_method = st.method();
2420     }
2421 #endif
2422 
2423     // the format of the stacktrace will be:
2424     // - 1 or more fillInStackTrace frames for the exception class (skipped)
2425     // - 0 or more <init> methods for the exception class (skipped)
2426     // - rest of the stack
2427 
2428     if (!skip_fillInStackTrace_check) {
2429       if (method->name() == vmSymbols::fillInStackTrace_name() &&
2430           throwable->is_a(method->method_holder())) {
2431         continue;
2432       }
2433       else {
2434         skip_fillInStackTrace_check = true; // gone past them all
2435       }
2436     }
2437     if (!skip_throwableInit_check) {
2438       assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2439 
2440       // skip <init> methods of the exception class and superclasses
2441       // This is simlar to classic VM.
2442       if (method->name() == vmSymbols::object_initializer_name() &&
2443           throwable->is_a(method->method_holder())) {
2444         continue;
2445       } else {
2446         // there are none or we've seen them all - either way stop checking
2447         skip_throwableInit_check = true;
2448       }
2449     }
2450     if (method->is_hidden()) {
2451       if (skip_hidden)  continue;
2452     }
2453     bt.push(method, bci, CHECK);
2454     total_count++;
2455   }
2456 
2457   log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count);
2458 
2459   // Put completed stack trace into throwable object
2460   set_backtrace(throwable(), bt.backtrace());
2461   set_depth(throwable(), total_count);
2462 }
2463 
2464 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) {
2465   // No-op if stack trace is disabled
2466   if (!StackTraceInThrowable) {
2467     return;
2468   }
2469 
2470   // Disable stack traces for some preallocated out of memory errors
2471   if (!Universe::should_fill_in_stack_trace(throwable)) {
2472     return;
2473   }
2474 
2475   PRESERVE_EXCEPTION_MARK;
2476 
2477   JavaThread* thread = JavaThread::active();
2478   fill_in_stack_trace(throwable, method, thread);
2479   // ignore exceptions thrown during stack trace filling
2480   CLEAR_PENDING_EXCEPTION;
2481 }
2482 
2483 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2484   // Allocate stack trace - backtrace is created but not filled in
2485 
2486   // No-op if stack trace is disabled
2487   if (!StackTraceInThrowable) return;
2488   BacktraceBuilder bt(CHECK);   // creates a backtrace
2489   set_backtrace(throwable(), bt.backtrace());
2490 }
2491 
2492 
2493 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2494   // Fill in stack trace into preallocated backtrace (no GC)
2495 
2496   // No-op if stack trace is disabled
2497   if (!StackTraceInThrowable) return;
2498 
2499   assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check");
2500 
2501   JavaThread* THREAD = JavaThread::current();
2502 
2503   objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2504   assert(backtrace.not_null(), "backtrace should have been preallocated");
2505 
2506   ResourceMark rm(THREAD);
2507   vframeStream st(THREAD);
2508 
2509   BacktraceBuilder bt(THREAD, backtrace);
2510 
2511   // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2512   // methods as preallocated errors aren't created by "java" code.
2513 
2514   // fill in as much stack trace as possible
2515   int chunk_count = 0;
2516   for (;!st.at_end(); st.next()) {
2517     bt.push(st.method(), st.bci(), CHECK);
2518     chunk_count++;
2519 
2520     // Bail-out for deep stacks
2521     if (chunk_count >= trace_chunk_size) break;
2522   }
2523   set_depth(throwable(), chunk_count);
2524   log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2525 
2526   // We support the Throwable immutability protocol defined for Java 7.
2527   java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2528   assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized");
2529 }
2530 
2531 void java_lang_Throwable::get_stack_trace_elements(Handle throwable,
2532                                                    objArrayHandle stack_trace_array_h, TRAPS) {
2533 
2534   if (throwable.is_null() || stack_trace_array_h.is_null()) {
2535     THROW(vmSymbols::java_lang_NullPointerException());
2536   }
2537 
2538   assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2539 
2540   if (stack_trace_array_h->length() != depth(throwable())) {
2541     THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2542   }
2543 
2544   objArrayHandle result(THREAD, objArrayOop(backtrace(throwable())));
2545   BacktraceIterator iter(result, THREAD);
2546 
2547   int index = 0;
2548   while (iter.repeat()) {
2549     BacktraceElement bte = iter.next(THREAD);
2550 
2551     Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2552 
2553     if (stack_trace_element.is_null()) {
2554       THROW(vmSymbols::java_lang_NullPointerException());
2555     }
2556 
2557     InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
2558     methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2559 
2560     java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2561                                          method,
2562                                          bte._version,
2563                                          bte._bci,
2564                                          bte._name, CHECK);
2565   }
2566 }
2567 
2568 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
2569   // Allocate java.lang.StackTraceElement instance
2570   InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
2571   assert(k != NULL, "must be loaded in 1.4+");
2572   if (k->should_be_initialized()) {
2573     k->initialize(CHECK_0);
2574   }
2575 
2576   Handle element = k->allocate_instance_handle(CHECK_0);
2577 
2578   int version = method->constants()->version();
2579   fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_0);
2580   return element();
2581 }
2582 
2583 void java_lang_StackTraceElement::fill_in(Handle element,
2584                                           InstanceKlass* holder, const methodHandle& method,
2585                                           int version, int bci, Symbol* name, TRAPS) {
2586   assert(element->is_a(SystemDictionary::StackTraceElement_klass()), "sanity check");
2587 
2588   // Fill in class name
2589   ResourceMark rm(THREAD);
2590   const char* str = holder->external_name();
2591   oop classname = StringTable::intern(str, CHECK);
2592   java_lang_StackTraceElement::set_declaringClass(element(), classname);
2593   java_lang_StackTraceElement::set_declaringClassObject(element(), holder->java_mirror());
2594 
2595   oop loader = holder->class_loader();
2596   if (loader != NULL) {
2597     oop loader_name = java_lang_ClassLoader::name(loader);
2598     if (loader_name != NULL)
2599       java_lang_StackTraceElement::set_classLoaderName(element(), loader_name);
2600   }
2601 
2602   // Fill in method name
2603   oop methodname = StringTable::intern(name, CHECK);
2604   java_lang_StackTraceElement::set_methodName(element(), methodname);
2605 
2606   // Fill in module name and version
2607   ModuleEntry* module = holder->module();
2608   if (module->is_named()) {
2609     oop module_name = StringTable::intern(module->name(), CHECK);
2610     java_lang_StackTraceElement::set_moduleName(element(), module_name);
2611     oop module_version;
2612     if (module->version() != NULL) {
2613       module_version = StringTable::intern(module->version(), CHECK);
2614     } else {
2615       module_version = NULL;
2616     }
2617     java_lang_StackTraceElement::set_moduleVersion(element(), module_version);
2618   }
2619 
2620   if (method() == NULL || !version_matches(method(), version)) {
2621     // The method was redefined, accurate line number information isn't available
2622     java_lang_StackTraceElement::set_fileName(element(), NULL);
2623     java_lang_StackTraceElement::set_lineNumber(element(), -1);
2624   } else {
2625     // Fill in source file name and line number.
2626     Symbol* source = Backtrace::get_source_file_name(holder, version);
2627     if (ShowHiddenFrames && source == NULL)
2628       source = vmSymbols::unknown_class_name();
2629     oop filename = StringTable::intern(source, CHECK);
2630     java_lang_StackTraceElement::set_fileName(element(), filename);
2631 
2632     int line_number = Backtrace::get_line_number(method, bci);
2633     java_lang_StackTraceElement::set_lineNumber(element(), line_number);
2634   }
2635 }
2636 
2637 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) {
2638   Handle mname(THREAD, stackFrame->obj_field(_memberName_offset));
2639   Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname());
2640   // we should expand MemberName::name when Throwable uses StackTrace
2641   // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL);
2642   return method;
2643 }
2644 
2645 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, TRAPS) {
2646   // set Method* or mid/cpref
2647   Handle mname(Thread::current(), stackFrame->obj_field(_memberName_offset));
2648   InstanceKlass* ik = method->method_holder();
2649   CallInfo info(method(), ik, CHECK);
2650   MethodHandles::init_method_MemberName(mname, info);
2651   // set bci
2652   java_lang_StackFrameInfo::set_bci(stackFrame(), bci);
2653   // method may be redefined; store the version
2654   int version = method->constants()->version();
2655   assert((jushort)version == version, "version should be short");
2656   java_lang_StackFrameInfo::set_version(stackFrame(), (short)version);
2657 }
2658 
2659 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
2660   ResourceMark rm(THREAD);
2661   Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
2662   Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
2663   InstanceKlass* holder = InstanceKlass::cast(clazz);
2664   Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
2665 
2666   short version = stackFrame->short_field(_version_offset);
2667   short bci = stackFrame->short_field(_bci_offset);
2668   Symbol* name = method->name();
2669   java_lang_StackTraceElement::fill_in(stack_trace_element, holder, method, version, bci, name, CHECK);
2670 }
2671 
2672 #define STACKFRAMEINFO_FIELDS_DO(macro) \
2673   macro(_memberName_offset,     k, "memberName",  object_signature, false); \
2674   macro(_bci_offset,            k, "bci",         short_signature,  false)
2675 
2676 void java_lang_StackFrameInfo::compute_offsets() {
2677   InstanceKlass* k = SystemDictionary::StackFrameInfo_klass();
2678   STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2679   STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
2680 }
2681 
2682 #if INCLUDE_CDS
2683 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) {
2684   STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2685   STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2686 }
2687 #endif
2688 
2689 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \
2690   macro(_monitors_offset,   k, "monitors",    object_array_signature, false); \
2691   macro(_locals_offset,     k, "locals",      object_array_signature, false); \
2692   macro(_operands_offset,   k, "operands",    object_array_signature, false); \
2693   macro(_mode_offset,       k, "mode",        int_signature,          false)
2694 
2695 void java_lang_LiveStackFrameInfo::compute_offsets() {
2696   InstanceKlass* k = SystemDictionary::LiveStackFrameInfo_klass();
2697   LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2698 }
2699 
2700 #if INCLUDE_CDS
2701 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) {
2702   LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2703 }
2704 #endif
2705 
2706 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \
2707   macro(override_offset, k, "override", bool_signature, false)
2708 
2709 void java_lang_reflect_AccessibleObject::compute_offsets() {
2710   InstanceKlass* k = SystemDictionary::reflect_AccessibleObject_klass();
2711   ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2712 }
2713 
2714 #if INCLUDE_CDS
2715 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) {
2716   ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2717 }
2718 #endif
2719 
2720 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
2721   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2722   return (jboolean) reflect->bool_field(override_offset);
2723 }
2724 
2725 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
2726   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2727   reflect->bool_field_put(override_offset, (int) value);
2728 }
2729 
2730 #define METHOD_FIELDS_DO(macro) \
2731   macro(clazz_offset,          k, vmSymbols::clazz_name(),          class_signature,       false); \
2732   macro(name_offset,           k, vmSymbols::name_name(),           string_signature,      false); \
2733   macro(returnType_offset,     k, vmSymbols::returnType_name(),     class_signature,       false); \
2734   macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2735   macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2736   macro(slot_offset,           k, vmSymbols::slot_name(),           int_signature,         false); \
2737   macro(modifiers_offset,      k, vmSymbols::modifiers_name(),      int_signature,         false); \
2738   macro##_OPTIONAL(signature_offset,             k, vmSymbols::signature_name(),             string_signature); \
2739   macro##_OPTIONAL(annotations_offset,           k, vmSymbols::annotations_name(),           byte_array_signature); \
2740   macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
2741   macro##_OPTIONAL(annotation_default_offset,    k, vmSymbols::annotation_default_name(),    byte_array_signature); \
2742   macro##_OPTIONAL(type_annotations_offset,      k, vmSymbols::type_annotations_name(),      byte_array_signature)
2743 
2744 void java_lang_reflect_Method::compute_offsets() {
2745   InstanceKlass* k = SystemDictionary::reflect_Method_klass();
2746   // The generic signature and annotations fields are only present in 1.5
2747   signature_offset = -1;
2748   annotations_offset = -1;
2749   parameter_annotations_offset = -1;
2750   annotation_default_offset = -1;
2751   type_annotations_offset = -1;
2752   METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2753 }
2754 
2755 #if INCLUDE_CDS
2756 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) {
2757   METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2758 }
2759 #endif
2760 
2761 Handle java_lang_reflect_Method::create(TRAPS) {
2762   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2763   Klass* klass = SystemDictionary::reflect_Method_klass();
2764   // This class is eagerly initialized during VM initialization, since we keep a refence
2765   // to one of the methods
2766   assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized");
2767   return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD);
2768 }
2769 
2770 oop java_lang_reflect_Method::clazz(oop reflect) {
2771   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2772   return reflect->obj_field(clazz_offset);
2773 }
2774 
2775 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) {
2776   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2777    reflect->obj_field_put(clazz_offset, value);
2778 }
2779 
2780 int java_lang_reflect_Method::slot(oop reflect) {
2781   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2782   return reflect->int_field(slot_offset);
2783 }
2784 
2785 void java_lang_reflect_Method::set_slot(oop reflect, int value) {
2786   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2787   reflect->int_field_put(slot_offset, value);
2788 }
2789 
2790 oop java_lang_reflect_Method::name(oop method) {
2791   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2792   return method->obj_field(name_offset);
2793 }
2794 
2795 void java_lang_reflect_Method::set_name(oop method, oop value) {
2796   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2797   method->obj_field_put(name_offset, value);
2798 }
2799 
2800 oop java_lang_reflect_Method::return_type(oop method) {
2801   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2802   return method->obj_field(returnType_offset);
2803 }
2804 
2805 void java_lang_reflect_Method::set_return_type(oop method, oop value) {
2806   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2807   method->obj_field_put(returnType_offset, value);
2808 }
2809 
2810 oop java_lang_reflect_Method::parameter_types(oop method) {
2811   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2812   return method->obj_field(parameterTypes_offset);
2813 }
2814 
2815 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) {
2816   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2817   method->obj_field_put(parameterTypes_offset, value);
2818 }
2819 
2820 oop java_lang_reflect_Method::exception_types(oop method) {
2821   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2822   return method->obj_field(exceptionTypes_offset);
2823 }
2824 
2825 void java_lang_reflect_Method::set_exception_types(oop method, oop value) {
2826   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2827   method->obj_field_put(exceptionTypes_offset, value);
2828 }
2829 
2830 int java_lang_reflect_Method::modifiers(oop method) {
2831   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2832   return method->int_field(modifiers_offset);
2833 }
2834 
2835 void java_lang_reflect_Method::set_modifiers(oop method, int value) {
2836   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2837   method->int_field_put(modifiers_offset, value);
2838 }
2839 
2840 bool java_lang_reflect_Method::has_signature_field() {
2841   return (signature_offset >= 0);
2842 }
2843 
2844 oop java_lang_reflect_Method::signature(oop method) {
2845   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2846   assert(has_signature_field(), "signature field must be present");
2847   return method->obj_field(signature_offset);
2848 }
2849 
2850 void java_lang_reflect_Method::set_signature(oop method, oop value) {
2851   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2852   assert(has_signature_field(), "signature field must be present");
2853   method->obj_field_put(signature_offset, value);
2854 }
2855 
2856 bool java_lang_reflect_Method::has_annotations_field() {
2857   return (annotations_offset >= 0);
2858 }
2859 
2860 oop java_lang_reflect_Method::annotations(oop method) {
2861   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2862   assert(has_annotations_field(), "annotations field must be present");
2863   return method->obj_field(annotations_offset);
2864 }
2865 
2866 void java_lang_reflect_Method::set_annotations(oop method, oop value) {
2867   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2868   assert(has_annotations_field(), "annotations field must be present");
2869   method->obj_field_put(annotations_offset, value);
2870 }
2871 
2872 bool java_lang_reflect_Method::has_parameter_annotations_field() {
2873   return (parameter_annotations_offset >= 0);
2874 }
2875 
2876 oop java_lang_reflect_Method::parameter_annotations(oop method) {
2877   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2878   assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2879   return method->obj_field(parameter_annotations_offset);
2880 }
2881 
2882 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) {
2883   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2884   assert(has_parameter_annotations_field(), "parameter annotations field must be present");
2885   method->obj_field_put(parameter_annotations_offset, value);
2886 }
2887 
2888 bool java_lang_reflect_Method::has_annotation_default_field() {
2889   return (annotation_default_offset >= 0);
2890 }
2891 
2892 oop java_lang_reflect_Method::annotation_default(oop method) {
2893   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2894   assert(has_annotation_default_field(), "annotation default field must be present");
2895   return method->obj_field(annotation_default_offset);
2896 }
2897 
2898 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) {
2899   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2900   assert(has_annotation_default_field(), "annotation default field must be present");
2901   method->obj_field_put(annotation_default_offset, value);
2902 }
2903 
2904 bool java_lang_reflect_Method::has_type_annotations_field() {
2905   return (type_annotations_offset >= 0);
2906 }
2907 
2908 oop java_lang_reflect_Method::type_annotations(oop method) {
2909   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2910   assert(has_type_annotations_field(), "type_annotations field must be present");
2911   return method->obj_field(type_annotations_offset);
2912 }
2913 
2914 void java_lang_reflect_Method::set_type_annotations(oop method, oop value) {
2915   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2916   assert(has_type_annotations_field(), "type_annotations field must be present");
2917   method->obj_field_put(type_annotations_offset, value);
2918 }
2919 
2920 #define CONSTRUCTOR_FIELDS_DO(macro) \
2921   macro(clazz_offset,          k, vmSymbols::clazz_name(),          class_signature,       false); \
2922   macro(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \
2923   macro(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \
2924   macro(slot_offset,           k, vmSymbols::slot_name(),           int_signature,         false); \
2925   macro(modifiers_offset,      k, vmSymbols::modifiers_name(),      int_signature,         false); \
2926   macro##_OPTIONAL(signature_offset,             k, vmSymbols::signature_name(),             string_signature); \
2927   macro##_OPTIONAL(annotations_offset,           k, vmSymbols::annotations_name(),           byte_array_signature); \
2928   macro##_OPTIONAL(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature); \
2929   macro##_OPTIONAL(type_annotations_offset,      k, vmSymbols::type_annotations_name(),      byte_array_signature)
2930 
2931 
2932 void java_lang_reflect_Constructor::compute_offsets() {
2933   InstanceKlass* k = SystemDictionary::reflect_Constructor_klass();
2934   // The generic signature and annotations fields are only present in 1.5
2935   signature_offset = -1;
2936   annotations_offset = -1;
2937   parameter_annotations_offset = -1;
2938   type_annotations_offset = -1;
2939   CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2940 }
2941 
2942 #if INCLUDE_CDS
2943 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) {
2944   CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2945 }
2946 #endif
2947 
2948 Handle java_lang_reflect_Constructor::create(TRAPS) {
2949   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2950   Symbol* name = vmSymbols::java_lang_reflect_Constructor();
2951   Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
2952   InstanceKlass* ik = InstanceKlass::cast(k);
2953   // Ensure it is initialized
2954   ik->initialize(CHECK_NH);
2955   return ik->allocate_instance_handle(THREAD);
2956 }
2957 
2958 oop java_lang_reflect_Constructor::clazz(oop reflect) {
2959   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2960   return reflect->obj_field(clazz_offset);
2961 }
2962 
2963 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) {
2964   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2965    reflect->obj_field_put(clazz_offset, value);
2966 }
2967 
2968 oop java_lang_reflect_Constructor::parameter_types(oop constructor) {
2969   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2970   return constructor->obj_field(parameterTypes_offset);
2971 }
2972 
2973 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) {
2974   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2975   constructor->obj_field_put(parameterTypes_offset, value);
2976 }
2977 
2978 oop java_lang_reflect_Constructor::exception_types(oop constructor) {
2979   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2980   return constructor->obj_field(exceptionTypes_offset);
2981 }
2982 
2983 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) {
2984   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2985   constructor->obj_field_put(exceptionTypes_offset, value);
2986 }
2987 
2988 int java_lang_reflect_Constructor::slot(oop reflect) {
2989   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2990   return reflect->int_field(slot_offset);
2991 }
2992 
2993 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) {
2994   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
2995   reflect->int_field_put(slot_offset, value);
2996 }
2997 
2998 int java_lang_reflect_Constructor::modifiers(oop constructor) {
2999   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3000   return constructor->int_field(modifiers_offset);
3001 }
3002 
3003 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) {
3004   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3005   constructor->int_field_put(modifiers_offset, value);
3006 }
3007 
3008 bool java_lang_reflect_Constructor::has_signature_field() {
3009   return (signature_offset >= 0);
3010 }
3011 
3012 oop java_lang_reflect_Constructor::signature(oop constructor) {
3013   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3014   assert(has_signature_field(), "signature field must be present");
3015   return constructor->obj_field(signature_offset);
3016 }
3017 
3018 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3019   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3020   assert(has_signature_field(), "signature field must be present");
3021   constructor->obj_field_put(signature_offset, value);
3022 }
3023 
3024 bool java_lang_reflect_Constructor::has_annotations_field() {
3025   return (annotations_offset >= 0);
3026 }
3027 
3028 oop java_lang_reflect_Constructor::annotations(oop constructor) {
3029   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3030   assert(has_annotations_field(), "annotations field must be present");
3031   return constructor->obj_field(annotations_offset);
3032 }
3033 
3034 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3035   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3036   assert(has_annotations_field(), "annotations field must be present");
3037   constructor->obj_field_put(annotations_offset, value);
3038 }
3039 
3040 bool java_lang_reflect_Constructor::has_parameter_annotations_field() {
3041   return (parameter_annotations_offset >= 0);
3042 }
3043 
3044 oop java_lang_reflect_Constructor::parameter_annotations(oop method) {
3045   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3046   assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3047   return method->obj_field(parameter_annotations_offset);
3048 }
3049 
3050 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3051   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3052   assert(has_parameter_annotations_field(), "parameter annotations field must be present");
3053   method->obj_field_put(parameter_annotations_offset, value);
3054 }
3055 
3056 bool java_lang_reflect_Constructor::has_type_annotations_field() {
3057   return (type_annotations_offset >= 0);
3058 }
3059 
3060 oop java_lang_reflect_Constructor::type_annotations(oop constructor) {
3061   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3062   assert(has_type_annotations_field(), "type_annotations field must be present");
3063   return constructor->obj_field(type_annotations_offset);
3064 }
3065 
3066 void java_lang_reflect_Constructor::set_type_annotations(oop constructor, oop value) {
3067   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3068   assert(has_type_annotations_field(), "type_annotations field must be present");
3069   constructor->obj_field_put(type_annotations_offset, value);
3070 }
3071 
3072 #define FIELD_FIELDS_DO(macro) \
3073   macro(clazz_offset,     k, vmSymbols::clazz_name(),     class_signature,  false); \
3074   macro(name_offset,      k, vmSymbols::name_name(),      string_signature, false); \
3075   macro(type_offset,      k, vmSymbols::type_name(),      class_signature,  false); \
3076   macro(slot_offset,      k, vmSymbols::slot_name(),      int_signature,    false); \
3077   macro(modifiers_offset, k, vmSymbols::modifiers_name(), int_signature,    false); \
3078   macro##_OPTIONAL(signature_offset,        k, vmSymbols::signature_name(), string_signature); \
3079   macro##_OPTIONAL(annotations_offset,      k, vmSymbols::annotations_name(),  byte_array_signature); \
3080   macro##_OPTIONAL(type_annotations_offset, k, vmSymbols::type_annotations_name(),  byte_array_signature)
3081 
3082 void java_lang_reflect_Field::compute_offsets() {
3083   InstanceKlass* k = SystemDictionary::reflect_Field_klass();
3084   // The generic signature and annotations fields are only present in 1.5
3085   signature_offset = -1;
3086   annotations_offset = -1;
3087   type_annotations_offset = -1;
3088   FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3089 }
3090 
3091 #if INCLUDE_CDS
3092 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3093   FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3094 }
3095 #endif
3096 
3097 Handle java_lang_reflect_Field::create(TRAPS) {
3098   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3099   Symbol* name = vmSymbols::java_lang_reflect_Field();
3100   Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3101   InstanceKlass* ik = InstanceKlass::cast(k);
3102   // Ensure it is initialized
3103   ik->initialize(CHECK_NH);
3104   return ik->allocate_instance_handle(THREAD);
3105 }
3106 
3107 oop java_lang_reflect_Field::clazz(oop reflect) {
3108   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3109   return reflect->obj_field(clazz_offset);
3110 }
3111 
3112 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) {
3113   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3114    reflect->obj_field_put(clazz_offset, value);
3115 }
3116 
3117 oop java_lang_reflect_Field::name(oop field) {
3118   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3119   return field->obj_field(name_offset);
3120 }
3121 
3122 void java_lang_reflect_Field::set_name(oop field, oop value) {
3123   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3124   field->obj_field_put(name_offset, value);
3125 }
3126 
3127 oop java_lang_reflect_Field::type(oop field) {
3128   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3129   return field->obj_field(type_offset);
3130 }
3131 
3132 void java_lang_reflect_Field::set_type(oop field, oop value) {
3133   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3134   field->obj_field_put(type_offset, value);
3135 }
3136 
3137 int java_lang_reflect_Field::slot(oop reflect) {
3138   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3139   return reflect->int_field(slot_offset);
3140 }
3141 
3142 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3143   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3144   reflect->int_field_put(slot_offset, value);
3145 }
3146 
3147 int java_lang_reflect_Field::modifiers(oop field) {
3148   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3149   return field->int_field(modifiers_offset);
3150 }
3151 
3152 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3153   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3154   field->int_field_put(modifiers_offset, value);
3155 }
3156 
3157 bool java_lang_reflect_Field::has_signature_field() {
3158   return (signature_offset >= 0);
3159 }
3160 
3161 oop java_lang_reflect_Field::signature(oop field) {
3162   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3163   assert(has_signature_field(), "signature field must be present");
3164   return field->obj_field(signature_offset);
3165 }
3166 
3167 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3168   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3169   assert(has_signature_field(), "signature field must be present");
3170   field->obj_field_put(signature_offset, value);
3171 }
3172 
3173 bool java_lang_reflect_Field::has_annotations_field() {
3174   return (annotations_offset >= 0);
3175 }
3176 
3177 oop java_lang_reflect_Field::annotations(oop field) {
3178   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3179   assert(has_annotations_field(), "annotations field must be present");
3180   return field->obj_field(annotations_offset);
3181 }
3182 
3183 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3184   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3185   assert(has_annotations_field(), "annotations field must be present");
3186   field->obj_field_put(annotations_offset, value);
3187 }
3188 
3189 bool java_lang_reflect_Field::has_type_annotations_field() {
3190   return (type_annotations_offset >= 0);
3191 }
3192 
3193 oop java_lang_reflect_Field::type_annotations(oop field) {
3194   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3195   assert(has_type_annotations_field(), "type_annotations field must be present");
3196   return field->obj_field(type_annotations_offset);
3197 }
3198 
3199 void java_lang_reflect_Field::set_type_annotations(oop field, oop value) {
3200   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3201   assert(has_type_annotations_field(), "type_annotations field must be present");
3202   field->obj_field_put(type_annotations_offset, value);
3203 }
3204 
3205 #define CONSTANTPOOL_FIELDS_DO(macro) \
3206   macro(_oop_offset, k, "constantPoolOop", object_signature, false)
3207 
3208 void reflect_ConstantPool::compute_offsets() {
3209   InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3210   // The field is called ConstantPool* in the sun.reflect.ConstantPool class.
3211   CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3212 }
3213 
3214 #if INCLUDE_CDS
3215 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) {
3216   CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3217 }
3218 #endif
3219 
3220 #define PARAMETER_FIELDS_DO(macro) \
3221   macro(name_offset,        k, vmSymbols::name_name(),        string_signature, false); \
3222   macro(modifiers_offset,   k, vmSymbols::modifiers_name(),   int_signature,    false); \
3223   macro(index_offset,       k, vmSymbols::index_name(),       int_signature,    false); \
3224   macro(executable_offset,  k, vmSymbols::executable_name(),  executable_signature, false)
3225 
3226 void java_lang_reflect_Parameter::compute_offsets() {
3227   InstanceKlass* k = SystemDictionary::reflect_Parameter_klass();
3228   PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3229 }
3230 
3231 #if INCLUDE_CDS
3232 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) {
3233   PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3234 }
3235 #endif
3236 
3237 Handle java_lang_reflect_Parameter::create(TRAPS) {
3238   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3239   Symbol* name = vmSymbols::java_lang_reflect_Parameter();
3240   Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3241   InstanceKlass* ik = InstanceKlass::cast(k);
3242   // Ensure it is initialized
3243   ik->initialize(CHECK_NH);
3244   return ik->allocate_instance_handle(THREAD);
3245 }
3246 
3247 oop java_lang_reflect_Parameter::name(oop param) {
3248   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3249   return param->obj_field(name_offset);
3250 }
3251 
3252 void java_lang_reflect_Parameter::set_name(oop param, oop value) {
3253   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3254   param->obj_field_put(name_offset, value);
3255 }
3256 
3257 int java_lang_reflect_Parameter::modifiers(oop param) {
3258   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3259   return param->int_field(modifiers_offset);
3260 }
3261 
3262 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) {
3263   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3264   param->int_field_put(modifiers_offset, value);
3265 }
3266 
3267 int java_lang_reflect_Parameter::index(oop param) {
3268   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3269   return param->int_field(index_offset);
3270 }
3271 
3272 void java_lang_reflect_Parameter::set_index(oop param, int value) {
3273   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3274   param->int_field_put(index_offset, value);
3275 }
3276 
3277 oop java_lang_reflect_Parameter::executable(oop param) {
3278   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3279   return param->obj_field(executable_offset);
3280 }
3281 
3282 void java_lang_reflect_Parameter::set_executable(oop param, oop value) {
3283   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3284   param->obj_field_put(executable_offset, value);
3285 }
3286 
3287 
3288 int java_lang_Module::loader_offset;
3289 int java_lang_Module::name_offset;
3290 int java_lang_Module::_module_entry_offset = -1;
3291 
3292 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) {
3293   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3294   return JavaCalls::construct_new_instance(SystemDictionary::Module_klass(),
3295                           vmSymbols::java_lang_module_init_signature(),
3296                           loader, module_name, CHECK_NH);
3297 }
3298 
3299 #define MODULE_FIELDS_DO(macro) \
3300   macro(loader_offset,  k, vmSymbols::loader_name(),  classloader_signature, false); \
3301   macro(name_offset,    k, vmSymbols::name_name(),    string_signature,      false)
3302 
3303 void java_lang_Module::compute_offsets() {
3304   InstanceKlass* k = SystemDictionary::Module_klass();
3305   MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3306   MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3307 }
3308 
3309 #if INCLUDE_CDS
3310 void java_lang_Module::serialize_offsets(SerializeClosure* f) {
3311   MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3312   MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3313 }
3314 #endif
3315 
3316 oop java_lang_Module::loader(oop module) {
3317   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3318   return module->obj_field(loader_offset);
3319 }
3320 
3321 void java_lang_Module::set_loader(oop module, oop value) {
3322   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3323   module->obj_field_put(loader_offset, value);
3324 }
3325 
3326 oop java_lang_Module::name(oop module) {
3327   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3328   return module->obj_field(name_offset);
3329 }
3330 
3331 void java_lang_Module::set_name(oop module, oop value) {
3332   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3333   module->obj_field_put(name_offset, value);
3334 }
3335 
3336 ModuleEntry* java_lang_Module::module_entry(oop module) {
3337   assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3338   assert(module != NULL, "module can't be null");
3339   assert(oopDesc::is_oop(module), "module must be oop");
3340 
3341   ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset);
3342   if (module_entry == NULL) {
3343     // If the inject field containing the ModuleEntry* is null then return the
3344     // class loader's unnamed module.
3345     oop loader = java_lang_Module::loader(module);
3346     Handle h_loader = Handle(Thread::current(), loader);
3347     ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader);
3348     return loader_cld->unnamed_module();
3349   }
3350   return module_entry;
3351 }
3352 
3353 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) {
3354   assert(_module_entry_offset != -1, "Uninitialized module_entry_offset");
3355   assert(module != NULL, "module can't be null");
3356   assert(oopDesc::is_oop(module), "module must be oop");
3357   module->address_field_put(_module_entry_offset, (address)module_entry);
3358 }
3359 
3360 Handle reflect_ConstantPool::create(TRAPS) {
3361   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3362   InstanceKlass* k = SystemDictionary::reflect_ConstantPool_klass();
3363   // Ensure it is initialized
3364   k->initialize(CHECK_NH);
3365   return k->allocate_instance_handle(THREAD);
3366 }
3367 
3368 
3369 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) {
3370   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3371   oop mirror = value->pool_holder()->java_mirror();
3372   // Save the mirror to get back the constant pool.
3373   reflect->obj_field_put(_oop_offset, mirror);
3374 }
3375 
3376 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) {
3377   assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3378 
3379   oop mirror = reflect->obj_field(_oop_offset);
3380   Klass* k = java_lang_Class::as_Klass(mirror);
3381   assert(k->is_instance_klass(), "Must be");
3382 
3383   // Get the constant pool back from the klass.  Since class redefinition
3384   // merges the new constant pool into the old, this is essentially the
3385   // same constant pool as the original.  If constant pool merging is
3386   // no longer done in the future, this will have to change to save
3387   // the original.
3388   return InstanceKlass::cast(k)->constants();
3389 }
3390 
3391 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \
3392   macro(_base_offset, k, "base", object_signature, false)
3393 
3394 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() {
3395   InstanceKlass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass();
3396   UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3397 }
3398 
3399 #if INCLUDE_CDS
3400 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) {
3401   UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3402 }
3403 #endif
3404 
3405 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3406   Klass* k = SystemDictionary::box_klass(type);
3407   if (k == NULL)  return NULL;
3408   InstanceKlass* ik = InstanceKlass::cast(k);
3409   if (!ik->is_initialized())  ik->initialize(CHECK_0);
3410   return ik->allocate_instance(THREAD);
3411 }
3412 
3413 
3414 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3415   oop box = initialize_and_allocate(type, CHECK_0);
3416   if (box == NULL)  return NULL;
3417   switch (type) {
3418     case T_BOOLEAN:
3419       box->bool_field_put(value_offset, value->z);
3420       break;
3421     case T_CHAR:
3422       box->char_field_put(value_offset, value->c);
3423       break;
3424     case T_FLOAT:
3425       box->float_field_put(value_offset, value->f);
3426       break;
3427     case T_DOUBLE:
3428       box->double_field_put(long_value_offset, value->d);
3429       break;
3430     case T_BYTE:
3431       box->byte_field_put(value_offset, value->b);
3432       break;
3433     case T_SHORT:
3434       box->short_field_put(value_offset, value->s);
3435       break;
3436     case T_INT:
3437       box->int_field_put(value_offset, value->i);
3438       break;
3439     case T_LONG:
3440       box->long_field_put(long_value_offset, value->j);
3441       break;
3442     default:
3443       return NULL;
3444   }
3445   return box;
3446 }
3447 
3448 
3449 BasicType java_lang_boxing_object::basic_type(oop box) {
3450   if (box == NULL)  return T_ILLEGAL;
3451   BasicType type = SystemDictionary::box_klass_type(box->klass());
3452   if (type == T_OBJECT)         // 'unknown' value returned by SD::bkt
3453     return T_ILLEGAL;
3454   return type;
3455 }
3456 
3457 
3458 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
3459   BasicType type = SystemDictionary::box_klass_type(box->klass());
3460   switch (type) {
3461   case T_BOOLEAN:
3462     value->z = box->bool_field(value_offset);
3463     break;
3464   case T_CHAR:
3465     value->c = box->char_field(value_offset);
3466     break;
3467   case T_FLOAT:
3468     value->f = box->float_field(value_offset);
3469     break;
3470   case T_DOUBLE:
3471     value->d = box->double_field(long_value_offset);
3472     break;
3473   case T_BYTE:
3474     value->b = box->byte_field(value_offset);
3475     break;
3476   case T_SHORT:
3477     value->s = box->short_field(value_offset);
3478     break;
3479   case T_INT:
3480     value->i = box->int_field(value_offset);
3481     break;
3482   case T_LONG:
3483     value->j = box->long_field(long_value_offset);
3484     break;
3485   default:
3486     return T_ILLEGAL;
3487   } // end switch
3488   return type;
3489 }
3490 
3491 
3492 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
3493   BasicType type = SystemDictionary::box_klass_type(box->klass());
3494   switch (type) {
3495   case T_BOOLEAN:
3496     box->bool_field_put(value_offset, value->z);
3497     break;
3498   case T_CHAR:
3499     box->char_field_put(value_offset, value->c);
3500     break;
3501   case T_FLOAT:
3502     box->float_field_put(value_offset, value->f);
3503     break;
3504   case T_DOUBLE:
3505     box->double_field_put(long_value_offset, value->d);
3506     break;
3507   case T_BYTE:
3508     box->byte_field_put(value_offset, value->b);
3509     break;
3510   case T_SHORT:
3511     box->short_field_put(value_offset, value->s);
3512     break;
3513   case T_INT:
3514     box->int_field_put(value_offset, value->i);
3515     break;
3516   case T_LONG:
3517     box->long_field_put(long_value_offset, value->j);
3518     break;
3519   default:
3520     return T_ILLEGAL;
3521   } // end switch
3522   return type;
3523 }
3524 
3525 
3526 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
3527   switch (type) {
3528   case T_BOOLEAN:   st->print("%s", value->z ? "true" : "false");   break;
3529   case T_CHAR:      st->print("%d", value->c);                      break;
3530   case T_BYTE:      st->print("%d", value->b);                      break;
3531   case T_SHORT:     st->print("%d", value->s);                      break;
3532   case T_INT:       st->print("%d", value->i);                      break;
3533   case T_LONG:      st->print(JLONG_FORMAT, value->j);              break;
3534   case T_FLOAT:     st->print("%f", value->f);                      break;
3535   case T_DOUBLE:    st->print("%lf", value->d);                     break;
3536   default:          st->print("type %d?", type);                    break;
3537   }
3538 }
3539 
3540 // Support for java_lang_ref_Reference
3541 
3542 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3543   assert(obj != NULL, "sanity");
3544   if (offset != java_lang_ref_Reference::referent_offset) {
3545     return false;
3546   }
3547 
3548   Klass* k = obj->klass();
3549   if (!k->is_instance_klass()) {
3550     return false;
3551   }
3552 
3553   InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3554   bool is_reference = ik->reference_type() != REF_NONE;
3555   assert(!is_reference || ik->is_subclass_of(SystemDictionary::Reference_klass()), "sanity");
3556   return is_reference;
3557 }
3558 
3559 // Support for java_lang_ref_SoftReference
3560 //
3561 
3562 #define SOFTREFERENCE_FIELDS_DO(macro) \
3563   macro(timestamp_offset,    k, "timestamp", long_signature, false); \
3564   macro(static_clock_offset, k, "clock",     long_signature, true)
3565 
3566 void java_lang_ref_SoftReference::compute_offsets() {
3567   InstanceKlass* k = SystemDictionary::SoftReference_klass();
3568   SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3569 }
3570 
3571 #if INCLUDE_CDS
3572 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) {
3573   SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3574 }
3575 #endif
3576 
3577 jlong java_lang_ref_SoftReference::timestamp(oop ref) {
3578   return ref->long_field(timestamp_offset);
3579 }
3580 
3581 jlong java_lang_ref_SoftReference::clock() {
3582   InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3583   oop base = ik->static_field_base_raw();
3584   return base->long_field(static_clock_offset);
3585 }
3586 
3587 void java_lang_ref_SoftReference::set_clock(jlong value) {
3588   InstanceKlass* ik = SystemDictionary::SoftReference_klass();
3589   oop base = ik->static_field_base_raw();
3590   base->long_field_put(static_clock_offset, value);
3591 }
3592 
3593 // Support for java_lang_invoke_DirectMethodHandle
3594 
3595 int java_lang_invoke_DirectMethodHandle::_member_offset;
3596 
3597 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) {
3598   oop member_name = NULL;
3599   assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh),
3600          "a DirectMethodHandle oop is expected");
3601   return dmh->obj_field(member_offset_in_bytes());
3602 }
3603 
3604 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \
3605   macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false)
3606 
3607 void java_lang_invoke_DirectMethodHandle::compute_offsets() {
3608   InstanceKlass* k = SystemDictionary::DirectMethodHandle_klass();
3609   DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3610 }
3611 
3612 #if INCLUDE_CDS
3613 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) {
3614   DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3615 }
3616 #endif
3617 
3618 // Support for java_lang_invoke_MethodHandle
3619 
3620 int java_lang_invoke_MethodHandle::_type_offset;
3621 int java_lang_invoke_MethodHandle::_form_offset;
3622 
3623 int java_lang_invoke_MemberName::_clazz_offset;
3624 int java_lang_invoke_MemberName::_name_offset;
3625 int java_lang_invoke_MemberName::_type_offset;
3626 int java_lang_invoke_MemberName::_flags_offset;
3627 int java_lang_invoke_MemberName::_method_offset;
3628 int java_lang_invoke_MemberName::_vmindex_offset;
3629 
3630 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset;
3631 int java_lang_invoke_ResolvedMethodName::_vmholder_offset;
3632 
3633 int java_lang_invoke_LambdaForm::_vmentry_offset;
3634 
3635 #define METHODHANDLE_FIELDS_DO(macro) \
3636   macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \
3637   macro(_form_offset, k, "form",                 java_lang_invoke_LambdaForm_signature, false)
3638 
3639 void java_lang_invoke_MethodHandle::compute_offsets() {
3640   InstanceKlass* k = SystemDictionary::MethodHandle_klass();
3641   METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3642 }
3643 
3644 #if INCLUDE_CDS
3645 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) {
3646   METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3647 }
3648 #endif
3649 
3650 #define MEMBERNAME_FIELDS_DO(macro) \
3651   macro(_clazz_offset,   k, vmSymbols::clazz_name(),   class_signature,  false); \
3652   macro(_name_offset,    k, vmSymbols::name_name(),    string_signature, false); \
3653   macro(_type_offset,    k, vmSymbols::type_name(),    object_signature, false); \
3654   macro(_flags_offset,   k, vmSymbols::flags_name(),   int_signature,    false); \
3655   macro(_method_offset,  k, vmSymbols::method_name(),  java_lang_invoke_ResolvedMethodName_signature, false)
3656 
3657 void java_lang_invoke_MemberName::compute_offsets() {
3658   InstanceKlass* k = SystemDictionary::MemberName_klass();
3659   MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3660   MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3661 }
3662 
3663 #if INCLUDE_CDS
3664 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) {
3665   MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3666   MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3667 }
3668 #endif
3669 
3670 void java_lang_invoke_ResolvedMethodName::compute_offsets() {
3671   InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3672   assert(k != NULL, "jdk mismatch");
3673   RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3674 }
3675 
3676 #if INCLUDE_CDS
3677 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) {
3678   RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3679 }
3680 #endif
3681 
3682 #define LAMBDAFORM_FIELDS_DO(macro) \
3683   macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false)
3684 
3685 void java_lang_invoke_LambdaForm::compute_offsets() {
3686   InstanceKlass* k = SystemDictionary::LambdaForm_klass();
3687   assert (k != NULL, "jdk mismatch");
3688   LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3689 }
3690 
3691 #if INCLUDE_CDS
3692 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) {
3693   LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3694 }
3695 #endif
3696 
3697 bool java_lang_invoke_LambdaForm::is_instance(oop obj) {
3698   return obj != NULL && is_subclass(obj->klass());
3699 }
3700 
3701 
3702 oop java_lang_invoke_MethodHandle::type(oop mh) {
3703   return mh->obj_field(_type_offset);
3704 }
3705 
3706 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
3707   mh->obj_field_put(_type_offset, mtype);
3708 }
3709 
3710 oop java_lang_invoke_MethodHandle::form(oop mh) {
3711   assert(_form_offset != 0, "");
3712   return mh->obj_field(_form_offset);
3713 }
3714 
3715 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
3716   assert(_form_offset != 0, "");
3717   mh->obj_field_put(_form_offset, lform);
3718 }
3719 
3720 /// MemberName accessors
3721 
3722 oop java_lang_invoke_MemberName::clazz(oop mname) {
3723   assert(is_instance(mname), "wrong type");
3724   return mname->obj_field(_clazz_offset);
3725 }
3726 
3727 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) {
3728   assert(is_instance(mname), "wrong type");
3729   mname->obj_field_put(_clazz_offset, clazz);
3730 }
3731 
3732 oop java_lang_invoke_MemberName::name(oop mname) {
3733   assert(is_instance(mname), "wrong type");
3734   return mname->obj_field(_name_offset);
3735 }
3736 
3737 void java_lang_invoke_MemberName::set_name(oop mname, oop name) {
3738   assert(is_instance(mname), "wrong type");
3739   mname->obj_field_put(_name_offset, name);
3740 }
3741 
3742 oop java_lang_invoke_MemberName::type(oop mname) {
3743   assert(is_instance(mname), "wrong type");
3744   return mname->obj_field(_type_offset);
3745 }
3746 
3747 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
3748   assert(is_instance(mname), "wrong type");
3749   mname->obj_field_put(_type_offset, type);
3750 }
3751 
3752 int java_lang_invoke_MemberName::flags(oop mname) {
3753   assert(is_instance(mname), "wrong type");
3754   return mname->int_field(_flags_offset);
3755 }
3756 
3757 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
3758   assert(is_instance(mname), "wrong type");
3759   mname->int_field_put(_flags_offset, flags);
3760 }
3761 
3762 
3763 // Return vmtarget from ResolvedMethodName method field through indirection
3764 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
3765   assert(is_instance(mname), "wrong type");
3766   oop method = mname->obj_field(_method_offset);
3767   return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method);
3768 }
3769 
3770 bool java_lang_invoke_MemberName::is_method(oop mname) {
3771   assert(is_instance(mname), "must be MemberName");
3772   return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
3773 }
3774 
3775 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
3776   assert(is_instance(mname), "wrong type");
3777   mname->obj_field_put(_method_offset, resolved_method);
3778 }
3779 
3780 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
3781   assert(is_instance(mname), "wrong type");
3782   return (intptr_t) mname->address_field(_vmindex_offset);
3783 }
3784 
3785 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
3786   assert(is_instance(mname), "wrong type");
3787   mname->address_field_put(_vmindex_offset, (address) index);
3788 }
3789 
3790 
3791 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
3792   assert(is_instance(resolved_method), "wrong type");
3793   Method* m = (Method*)resolved_method->address_field(_vmtarget_offset);
3794   assert(m->is_method(), "must be");
3795   return m;
3796 }
3797 
3798 // Used by redefinition to change Method* to new Method* with same hash (name, signature)
3799 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) {
3800   assert(is_instance(resolved_method), "wrong type");
3801   resolved_method->address_field_put(_vmtarget_offset, (address)m);
3802 }
3803 
3804 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) {
3805   // lookup ResolvedMethod oop in the table, or create a new one and intern it
3806   oop resolved_method = ResolvedMethodTable::find_method(m());
3807   if (resolved_method == NULL) {
3808     InstanceKlass* k = SystemDictionary::ResolvedMethodName_klass();
3809     if (!k->is_initialized()) {
3810       k->initialize(CHECK_NULL);
3811     }
3812     oop new_resolved_method = k->allocate_instance(CHECK_NULL);
3813     new_resolved_method->address_field_put(_vmtarget_offset, (address)m());
3814     // Add a reference to the loader (actually mirror because unsafe anonymous classes will not have
3815     // distinct loaders) to ensure the metadata is kept alive.
3816     // This mirror may be different than the one in clazz field.
3817     new_resolved_method->obj_field_put(_vmholder_offset, m->method_holder()->java_mirror());
3818     resolved_method = ResolvedMethodTable::add_method(Handle(THREAD, new_resolved_method));
3819   }
3820   return resolved_method;
3821 }
3822 
3823 oop java_lang_invoke_LambdaForm::vmentry(oop lform) {
3824   assert(is_instance(lform), "wrong type");
3825   return lform->obj_field(_vmentry_offset);
3826 }
3827 
3828 
3829 // Support for java_lang_invoke_MethodType
3830 
3831 int java_lang_invoke_MethodType::_rtype_offset;
3832 int java_lang_invoke_MethodType::_ptypes_offset;
3833 
3834 #define METHODTYPE_FIELDS_DO(macro) \
3835   macro(_rtype_offset,  k, "rtype",  class_signature,       false); \
3836   macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
3837 
3838 void java_lang_invoke_MethodType::compute_offsets() {
3839   InstanceKlass* k = SystemDictionary::MethodType_klass();
3840   METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3841 }
3842 
3843 #if INCLUDE_CDS
3844 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
3845   METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3846 }
3847 #endif
3848 
3849 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
3850   st->print("(");
3851   objArrayOop pts = ptypes(mt);
3852   for (int i = 0, limit = pts->length(); i < limit; i++) {
3853     java_lang_Class::print_signature(pts->obj_at(i), st);
3854   }
3855   st->print(")");
3856   java_lang_Class::print_signature(rtype(mt), st);
3857 }
3858 
3859 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) {
3860   ResourceMark rm;
3861   stringStream buffer(128);
3862   print_signature(mt, &buffer);
3863   const char* sigstr =       buffer.base();
3864   int         siglen = (int) buffer.size();
3865   Symbol *name;
3866   if (!intern_if_not_found) {
3867     name = SymbolTable::probe(sigstr, siglen);
3868   } else {
3869     name = SymbolTable::new_symbol(sigstr, siglen, THREAD);
3870   }
3871   return name;
3872 }
3873 
3874 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
3875   if (oopDesc::equals(mt1, mt2))
3876     return true;
3877   if (!oopDesc::equals(rtype(mt1), rtype(mt2)))
3878     return false;
3879   if (ptype_count(mt1) != ptype_count(mt2))
3880     return false;
3881   for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
3882     if (!oopDesc::equals(ptype(mt1, i), ptype(mt2, i)))
3883       return false;
3884   }
3885   return true;
3886 }
3887 
3888 oop java_lang_invoke_MethodType::rtype(oop mt) {
3889   assert(is_instance(mt), "must be a MethodType");
3890   return mt->obj_field(_rtype_offset);
3891 }
3892 
3893 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
3894   assert(is_instance(mt), "must be a MethodType");
3895   return (objArrayOop) mt->obj_field(_ptypes_offset);
3896 }
3897 
3898 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
3899   return ptypes(mt)->obj_at(idx);
3900 }
3901 
3902 int java_lang_invoke_MethodType::ptype_count(oop mt) {
3903   return ptypes(mt)->length();
3904 }
3905 
3906 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
3907   objArrayOop pts = ptypes(mt);
3908   int count = pts->length();
3909   int slots = 0;
3910   for (int i = 0; i < count; i++) {
3911     BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
3912     slots += type2size[bt];
3913   }
3914   return slots;
3915 }
3916 
3917 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
3918   BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
3919   return type2size[bt];
3920 }
3921 
3922 
3923 // Support for java_lang_invoke_CallSite
3924 
3925 int java_lang_invoke_CallSite::_target_offset;
3926 int java_lang_invoke_CallSite::_context_offset;
3927 
3928 #define CALLSITE_FIELDS_DO(macro) \
3929   macro(_target_offset,  k, "target", java_lang_invoke_MethodHandle_signature, false); \
3930   macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false)
3931 
3932 void java_lang_invoke_CallSite::compute_offsets() {
3933   InstanceKlass* k = SystemDictionary::CallSite_klass();
3934   CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3935 }
3936 
3937 #if INCLUDE_CDS
3938 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) {
3939   CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3940 }
3941 #endif
3942 
3943 oop java_lang_invoke_CallSite::context(oop call_site) {
3944   assert(java_lang_invoke_CallSite::is_instance(call_site), "");
3945 
3946   oop dep_oop = call_site->obj_field(_context_offset);
3947   return dep_oop;
3948 }
3949 
3950 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext
3951 
3952 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset;
3953 
3954 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() {
3955   InstanceKlass* k = SystemDictionary::Context_klass();
3956   CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
3957 }
3958 
3959 #if INCLUDE_CDS
3960 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) {
3961   CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
3962 }
3963 #endif
3964 
3965 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) {
3966   assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), "");
3967   intptr_t* vmdeps_addr = (intptr_t*)call_site->field_addr(_vmdependencies_offset);
3968   DependencyContext dep_ctx(vmdeps_addr);
3969   return dep_ctx;
3970 }
3971 
3972 // Support for java_security_AccessControlContext
3973 
3974 int java_security_AccessControlContext::_context_offset = 0;
3975 int java_security_AccessControlContext::_privilegedContext_offset = 0;
3976 int java_security_AccessControlContext::_isPrivileged_offset = 0;
3977 int java_security_AccessControlContext::_isAuthorized_offset = -1;
3978 
3979 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \
3980   macro(_context_offset,           k, "context",      protectiondomain_signature, false); \
3981   macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \
3982   macro(_isPrivileged_offset,      k, "isPrivileged", bool_signature, false); \
3983   macro(_isAuthorized_offset,      k, "isAuthorized", bool_signature, false)
3984 
3985 void java_security_AccessControlContext::compute_offsets() {
3986   assert(_isPrivileged_offset == 0, "offsets should be initialized only once");
3987   InstanceKlass* k = SystemDictionary::AccessControlContext_klass();
3988   ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3989 }
3990 
3991 #if INCLUDE_CDS
3992 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) {
3993   ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3994 }
3995 #endif
3996 
3997 bool java_security_AccessControlContext::is_authorized(Handle context) {
3998   assert(context.not_null() && context->klass() == SystemDictionary::AccessControlContext_klass(), "Invalid type");
3999   assert(_isAuthorized_offset != -1, "should be set");
4000   return context->bool_field(_isAuthorized_offset) != 0;
4001 }
4002 
4003 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) {
4004   assert(_isPrivileged_offset != 0, "offsets should have been initialized");
4005   // Ensure klass is initialized
4006   SystemDictionary::AccessControlContext_klass()->initialize(CHECK_0);
4007   // Allocate result
4008   oop result = SystemDictionary::AccessControlContext_klass()->allocate_instance(CHECK_0);
4009   // Fill in values
4010   result->obj_field_put(_context_offset, context());
4011   result->obj_field_put(_privilegedContext_offset, privileged_context());
4012   result->bool_field_put(_isPrivileged_offset, isPrivileged);
4013   // whitelist AccessControlContexts created by the JVM if present
4014   if (_isAuthorized_offset != -1) {
4015     result->bool_field_put(_isAuthorized_offset, true);
4016   }
4017   return result;
4018 }
4019 
4020 
4021 // Support for java_lang_ClassLoader
4022 
4023 bool java_lang_ClassLoader::offsets_computed = false;
4024 int  java_lang_ClassLoader::_loader_data_offset = -1;
4025 int  java_lang_ClassLoader::parallelCapable_offset = -1;
4026 int  java_lang_ClassLoader::name_offset = -1;
4027 int  java_lang_ClassLoader::nameAndId_offset = -1;
4028 int  java_lang_ClassLoader::unnamedModule_offset = -1;
4029 
4030 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) {
4031   assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4032   return HeapAccess<MO_ACQUIRE>::load_at(loader, _loader_data_offset);
4033 }
4034 
4035 ClassLoaderData* java_lang_ClassLoader::loader_data_raw(oop loader) {
4036   assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4037   return RawAccess<>::load_at(loader, _loader_data_offset);
4038 }
4039 
4040 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) {
4041   assert(loader != NULL && oopDesc::is_oop(loader), "loader must be oop");
4042   HeapAccess<MO_RELEASE>::store_at(loader, _loader_data_offset, new_data);
4043 }
4044 
4045 #define CLASSLOADER_FIELDS_DO(macro) \
4046   macro(parallelCapable_offset, k1, "parallelLockMap",      concurrenthashmap_signature, false); \
4047   macro(name_offset,            k1, vmSymbols::name_name(), string_signature, false); \
4048   macro(nameAndId_offset,       k1, "nameAndId",            string_signature, false); \
4049   macro(unnamedModule_offset,   k1, "unnamedModule",        module_signature, false); \
4050   macro(parent_offset,          k1, "parent",               classloader_signature, false)
4051 
4052 void java_lang_ClassLoader::compute_offsets() {
4053   assert(!offsets_computed, "offsets should be initialized only once");
4054   offsets_computed = true;
4055 
4056   InstanceKlass* k1 = SystemDictionary::ClassLoader_klass();
4057   CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4058 
4059   CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
4060 }
4061 
4062 #if INCLUDE_CDS
4063 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) {
4064   CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4065   CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
4066 }
4067 #endif
4068 
4069 oop java_lang_ClassLoader::parent(oop loader) {
4070   assert(is_instance(loader), "loader must be oop");
4071   return loader->obj_field(parent_offset);
4072 }
4073 
4074 // Returns the name field of this class loader.  If the name field has not
4075 // been set, null will be returned.
4076 oop java_lang_ClassLoader::name(oop loader) {
4077   assert(is_instance(loader), "loader must be oop");
4078   return loader->obj_field(name_offset);
4079 }
4080 
4081 // Returns the nameAndId field of this class loader. The format is
4082 // as follows:
4083 //   If the defining loader has a name explicitly set then '<loader-name>' @<id>
4084 //   If the defining loader has no name then <qualified-class-name> @<id>
4085 //   If built-in loader, then omit '@<id>' as there is only one instance.
4086 // Use ClassLoader::loader_name_id() to obtain this String as a char*.
4087 oop java_lang_ClassLoader::nameAndId(oop loader) {
4088   assert(is_instance(loader), "loader must be oop");
4089   return loader->obj_field(nameAndId_offset);
4090 }
4091 
4092 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) {
4093   assert(is_instance(loader), "loader must be oop");
4094   assert(cl == NULL || is_instance(cl), "cl argument must be oop");
4095   oop acl = loader;
4096   debug_only(jint loop_count = 0);
4097   // This loop taken verbatim from ClassLoader.java:
4098   do {
4099     acl = parent(acl);
4100     if (oopDesc::equals(cl, acl)) {
4101       return true;
4102     }
4103     assert(++loop_count > 0, "loop_count overflow");
4104   } while (acl != NULL);
4105   return false;
4106 }
4107 
4108 bool java_lang_ClassLoader::is_instance(oop obj) {
4109   return obj != NULL && is_subclass(obj->klass());
4110 }
4111 
4112 
4113 // For class loader classes, parallelCapable defined
4114 // based on non-null field
4115 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it
4116 bool java_lang_ClassLoader::parallelCapable(oop class_loader) {
4117   if (parallelCapable_offset == -1) {
4118      // Default for backward compatibility is false
4119      return false;
4120   }
4121   return (class_loader->obj_field(parallelCapable_offset) != NULL);
4122 }
4123 
4124 bool java_lang_ClassLoader::is_trusted_loader(oop loader) {
4125   // Fix for 4474172; see evaluation for more details
4126   loader = non_reflection_class_loader(loader);
4127 
4128   oop cl = SystemDictionary::java_system_loader();
4129   while(cl != NULL) {
4130     if (oopDesc::equals(cl, loader)) return true;
4131     cl = parent(cl);
4132   }
4133   return false;
4134 }
4135 
4136 // Return true if this is one of the class loaders associated with
4137 // the generated bytecodes for reflection.
4138 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) {
4139   if (loader != NULL) {
4140     Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass();
4141     // This might be null in non-1.4 JDKs
4142     return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class));
4143   }
4144   return false;
4145 }
4146 
4147 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) {
4148   // See whether this is one of the class loaders associated with
4149   // the generated bytecodes for reflection, and if so, "magically"
4150   // delegate to its parent to prevent class loading from occurring
4151   // in places where applications using reflection didn't expect it.
4152   if (is_reflection_class_loader(loader)) {
4153     return parent(loader);
4154   }
4155   return loader;
4156 }
4157 
4158 oop java_lang_ClassLoader::unnamedModule(oop loader) {
4159   assert(is_instance(loader), "loader must be oop");
4160   return loader->obj_field(unnamedModule_offset);
4161 }
4162 
4163 // Support for java_lang_System
4164 //
4165 #define SYSTEM_FIELDS_DO(macro) \
4166   macro(static_in_offset,  k, "in",  input_stream_signature, true); \
4167   macro(static_out_offset, k, "out", print_stream_signature, true); \
4168   macro(static_err_offset, k, "err", print_stream_signature, true); \
4169   macro(static_security_offset, k, "security", security_manager_signature, true)
4170 
4171 void java_lang_System::compute_offsets() {
4172   InstanceKlass* k = SystemDictionary::System_klass();
4173   SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4174 }
4175 
4176 #if INCLUDE_CDS
4177 void java_lang_System::serialize_offsets(SerializeClosure* f) {
4178    SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4179 }
4180 #endif
4181 
4182 int java_lang_System::in_offset_in_bytes() { return static_in_offset; }
4183 int java_lang_System::out_offset_in_bytes() { return static_out_offset; }
4184 int java_lang_System::err_offset_in_bytes() { return static_err_offset; }
4185 
4186 
4187 bool java_lang_System::has_security_manager() {
4188   InstanceKlass* ik = SystemDictionary::System_klass();
4189   oop base = ik->static_field_base_raw();
4190   return base->obj_field(static_security_offset) != NULL;
4191 }
4192 
4193 int java_lang_Class::_klass_offset;
4194 int java_lang_Class::_array_klass_offset;
4195 int java_lang_Class::_oop_size_offset;
4196 int java_lang_Class::_static_oop_field_count_offset;
4197 int java_lang_Class::_class_loader_offset;
4198 int java_lang_Class::_module_offset;
4199 int java_lang_Class::_protection_domain_offset;
4200 int java_lang_Class::_component_mirror_offset;
4201 int java_lang_Class::_init_lock_offset;
4202 int java_lang_Class::_signers_offset;
4203 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL;
4204 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL;
4205 int java_lang_Throwable::backtrace_offset;
4206 int java_lang_Throwable::detailMessage_offset;
4207 int java_lang_Throwable::stackTrace_offset;
4208 int java_lang_Throwable::depth_offset;
4209 int java_lang_Throwable::static_unassigned_stacktrace_offset;
4210 int java_lang_reflect_AccessibleObject::override_offset;
4211 int java_lang_reflect_Method::clazz_offset;
4212 int java_lang_reflect_Method::name_offset;
4213 int java_lang_reflect_Method::returnType_offset;
4214 int java_lang_reflect_Method::parameterTypes_offset;
4215 int java_lang_reflect_Method::exceptionTypes_offset;
4216 int java_lang_reflect_Method::slot_offset;
4217 int java_lang_reflect_Method::modifiers_offset;
4218 int java_lang_reflect_Method::signature_offset;
4219 int java_lang_reflect_Method::annotations_offset;
4220 int java_lang_reflect_Method::parameter_annotations_offset;
4221 int java_lang_reflect_Method::annotation_default_offset;
4222 int java_lang_reflect_Method::type_annotations_offset;
4223 int java_lang_reflect_Constructor::clazz_offset;
4224 int java_lang_reflect_Constructor::parameterTypes_offset;
4225 int java_lang_reflect_Constructor::exceptionTypes_offset;
4226 int java_lang_reflect_Constructor::slot_offset;
4227 int java_lang_reflect_Constructor::modifiers_offset;
4228 int java_lang_reflect_Constructor::signature_offset;
4229 int java_lang_reflect_Constructor::annotations_offset;
4230 int java_lang_reflect_Constructor::parameter_annotations_offset;
4231 int java_lang_reflect_Constructor::type_annotations_offset;
4232 int java_lang_reflect_Field::clazz_offset;
4233 int java_lang_reflect_Field::name_offset;
4234 int java_lang_reflect_Field::type_offset;
4235 int java_lang_reflect_Field::slot_offset;
4236 int java_lang_reflect_Field::modifiers_offset;
4237 int java_lang_reflect_Field::signature_offset;
4238 int java_lang_reflect_Field::annotations_offset;
4239 int java_lang_reflect_Field::type_annotations_offset;
4240 int java_lang_reflect_Parameter::name_offset;
4241 int java_lang_reflect_Parameter::modifiers_offset;
4242 int java_lang_reflect_Parameter::index_offset;
4243 int java_lang_reflect_Parameter::executable_offset;
4244 int java_lang_boxing_object::value_offset;
4245 int java_lang_boxing_object::long_value_offset;
4246 int java_lang_ref_Reference::referent_offset;
4247 int java_lang_ref_Reference::queue_offset;
4248 int java_lang_ref_Reference::next_offset;
4249 int java_lang_ref_Reference::discovered_offset;
4250 int java_lang_ref_SoftReference::timestamp_offset;
4251 int java_lang_ref_SoftReference::static_clock_offset;
4252 int java_lang_ClassLoader::parent_offset;
4253 int java_lang_System::static_in_offset;
4254 int java_lang_System::static_out_offset;
4255 int java_lang_System::static_err_offset;
4256 int java_lang_System::static_security_offset;
4257 int java_lang_StackTraceElement::methodName_offset;
4258 int java_lang_StackTraceElement::fileName_offset;
4259 int java_lang_StackTraceElement::lineNumber_offset;
4260 int java_lang_StackTraceElement::moduleName_offset;
4261 int java_lang_StackTraceElement::moduleVersion_offset;
4262 int java_lang_StackTraceElement::classLoaderName_offset;
4263 int java_lang_StackTraceElement::declaringClass_offset;
4264 int java_lang_StackTraceElement::declaringClassObject_offset;
4265 int java_lang_StackFrameInfo::_memberName_offset;
4266 int java_lang_StackFrameInfo::_bci_offset;
4267 int java_lang_StackFrameInfo::_version_offset;
4268 int java_lang_LiveStackFrameInfo::_monitors_offset;
4269 int java_lang_LiveStackFrameInfo::_locals_offset;
4270 int java_lang_LiveStackFrameInfo::_operands_offset;
4271 int java_lang_LiveStackFrameInfo::_mode_offset;
4272 int java_lang_AssertionStatusDirectives::classes_offset;
4273 int java_lang_AssertionStatusDirectives::classEnabled_offset;
4274 int java_lang_AssertionStatusDirectives::packages_offset;
4275 int java_lang_AssertionStatusDirectives::packageEnabled_offset;
4276 int java_lang_AssertionStatusDirectives::deflt_offset;
4277 int java_nio_Buffer::_limit_offset;
4278 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset;
4279 int reflect_ConstantPool::_oop_offset;
4280 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset;
4281 
4282 
4283 #define STACKTRACEELEMENT_FIELDS_DO(macro) \
4284   macro(declaringClassObject_offset,  k, "declaringClassObject", class_signature, false); \
4285   macro(classLoaderName_offset, k, "classLoaderName", string_signature, false); \
4286   macro(moduleName_offset,      k, "moduleName",      string_signature, false); \
4287   macro(moduleVersion_offset,   k, "moduleVersion",   string_signature, false); \
4288   macro(declaringClass_offset,  k, "declaringClass",  string_signature, false); \
4289   macro(methodName_offset,      k, "methodName",      string_signature, false); \
4290   macro(fileName_offset,        k, "fileName",        string_signature, false); \
4291   macro(lineNumber_offset,      k, "lineNumber",      int_signature,    false)
4292 
4293 // Support for java_lang_StackTraceElement
4294 void java_lang_StackTraceElement::compute_offsets() {
4295   InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
4296   STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4297 }
4298 
4299 #if INCLUDE_CDS
4300 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) {
4301   STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4302 }
4303 #endif
4304 
4305 void java_lang_StackTraceElement::set_fileName(oop element, oop value) {
4306   element->obj_field_put(fileName_offset, value);
4307 }
4308 
4309 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) {
4310   element->obj_field_put(declaringClass_offset, value);
4311 }
4312 
4313 void java_lang_StackTraceElement::set_methodName(oop element, oop value) {
4314   element->obj_field_put(methodName_offset, value);
4315 }
4316 
4317 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) {
4318   element->int_field_put(lineNumber_offset, value);
4319 }
4320 
4321 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) {
4322   element->obj_field_put(moduleName_offset, value);
4323 }
4324 
4325 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) {
4326   element->obj_field_put(moduleVersion_offset, value);
4327 }
4328 
4329 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) {
4330   element->obj_field_put(classLoaderName_offset, value);
4331 }
4332 
4333 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) {
4334   element->obj_field_put(declaringClassObject_offset, value);
4335 }
4336 
4337 void java_lang_StackFrameInfo::set_version(oop element, short value) {
4338   element->short_field_put(_version_offset, value);
4339 }
4340 
4341 void java_lang_StackFrameInfo::set_bci(oop element, int value) {
4342   element->int_field_put(_bci_offset, value);
4343 }
4344 
4345 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) {
4346   element->obj_field_put(_monitors_offset, value);
4347 }
4348 
4349 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) {
4350   element->obj_field_put(_locals_offset, value);
4351 }
4352 
4353 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) {
4354   element->obj_field_put(_operands_offset, value);
4355 }
4356 
4357 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) {
4358   element->int_field_put(_mode_offset, value);
4359 }
4360 
4361 // Support for java Assertions - java_lang_AssertionStatusDirectives.
4362 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \
4363   macro(classes_offset,        k, "classes",        string_array_signature, false); \
4364   macro(classEnabled_offset,   k, "classEnabled",   bool_array_signature, false); \
4365   macro(packages_offset,       k, "packages",       string_array_signature, false); \
4366   macro(packageEnabled_offset, k, "packageEnabled", bool_array_signature,   false); \
4367   macro(deflt_offset,          k, "deflt",          bool_signature,         false)
4368 
4369 void java_lang_AssertionStatusDirectives::compute_offsets() {
4370   InstanceKlass* k = SystemDictionary::AssertionStatusDirectives_klass();
4371   ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4372 }
4373 
4374 #if INCLUDE_CDS
4375 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) {
4376   ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4377 }
4378 #endif
4379 
4380 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) {
4381   o->obj_field_put(classes_offset, val);
4382 }
4383 
4384 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) {
4385   o->obj_field_put(classEnabled_offset, val);
4386 }
4387 
4388 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) {
4389   o->obj_field_put(packages_offset, val);
4390 }
4391 
4392 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) {
4393   o->obj_field_put(packageEnabled_offset, val);
4394 }
4395 
4396 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) {
4397   o->bool_field_put(deflt_offset, val);
4398 }
4399 
4400 
4401 // Support for intrinsification of java.nio.Buffer.checkIndex
4402 int java_nio_Buffer::limit_offset() {
4403   return _limit_offset;
4404 }
4405 
4406 #define BUFFER_FIELDS_DO(macro) \
4407   macro(_limit_offset, k, "limit", int_signature, false)
4408 
4409 void java_nio_Buffer::compute_offsets() {
4410   InstanceKlass* k = SystemDictionary::nio_Buffer_klass();
4411   assert(k != NULL, "must be loaded in 1.4+");
4412   BUFFER_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4413 }
4414 
4415 #if INCLUDE_CDS
4416 void java_nio_Buffer::serialize_offsets(SerializeClosure* f) {
4417   BUFFER_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4418 }
4419 #endif
4420 
4421 #define AOS_FIELDS_DO(macro) \
4422   macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false)
4423 
4424 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() {
4425   InstanceKlass* k = SystemDictionary::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass();
4426   AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4427 }
4428 
4429 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) {
4430   assert(_owner_offset != 0, "Must be initialized");
4431   return obj->obj_field(_owner_offset);
4432 }
4433 
4434 #if INCLUDE_CDS
4435 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) {
4436   AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4437 }
4438 #endif
4439 
4440 static int member_offset(int hardcoded_offset) {
4441   return (hardcoded_offset * heapOopSize) + instanceOopDesc::base_offset_in_bytes();
4442 }
4443 
4444 // Compute hard-coded offsets
4445 // Invoked before SystemDictionary::initialize, so pre-loaded classes
4446 // are not available to determine the offset_of_static_fields.
4447 void JavaClasses::compute_hard_coded_offsets() {
4448 
4449   // java_lang_boxing_object
4450   java_lang_boxing_object::value_offset      = member_offset(java_lang_boxing_object::hc_value_offset);
4451   java_lang_boxing_object::long_value_offset = align_up(member_offset(java_lang_boxing_object::hc_value_offset), BytesPerLong);
4452 
4453   // java_lang_ref_Reference
4454   java_lang_ref_Reference::referent_offset    = member_offset(java_lang_ref_Reference::hc_referent_offset);
4455   java_lang_ref_Reference::queue_offset       = member_offset(java_lang_ref_Reference::hc_queue_offset);
4456   java_lang_ref_Reference::next_offset        = member_offset(java_lang_ref_Reference::hc_next_offset);
4457   java_lang_ref_Reference::discovered_offset  = member_offset(java_lang_ref_Reference::hc_discovered_offset);
4458 }
4459 
4460 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets();
4461 
4462 // Compute non-hard-coded field offsets of all the classes in this file
4463 void JavaClasses::compute_offsets() {
4464   if (UseSharedSpaces) {
4465     return; // field offsets are loaded from archive
4466   }
4467 
4468   // We have already called the compute_offsets() of the
4469   // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String and java_lang_Class)
4470   // earlier inside SystemDictionary::resolve_preloaded_classes()
4471   BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS);
4472 
4473   // generated interpreter code wants to know about the offsets we just computed:
4474   AbstractAssembler::update_delayed_values();
4475 }
4476 
4477 #if INCLUDE_CDS
4478 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc);
4479 
4480 void JavaClasses::serialize_offsets(SerializeClosure* soc) {
4481   BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS);
4482 }
4483 #endif
4484 
4485 
4486 #ifndef PRODUCT
4487 
4488 // These functions exist to assert the validity of hard-coded field offsets to guard
4489 // against changes in the class files
4490 
4491 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) {
4492   EXCEPTION_MARK;
4493   fieldDescriptor fd;
4494   TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH);
4495   Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH);
4496   InstanceKlass* ik = InstanceKlass::cast(k);
4497   TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH);
4498   TempNewSymbol f_sig  = SymbolTable::new_symbol(field_sig, CATCH);
4499   if (!ik->find_local_field(f_name, f_sig, &fd)) {
4500     tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
4501     return false;
4502   }
4503   if (fd.is_static()) {
4504     tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
4505     return false;
4506   }
4507   if (fd.offset() == hardcoded_offset ) {
4508     return true;
4509   } else {
4510     tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.",
4511                   klass_name, field_name, hardcoded_offset, fd.offset());
4512     return false;
4513   }
4514 }
4515 
4516 // Check the hard-coded field offsets of all the classes in this file
4517 
4518 void JavaClasses::check_offsets() {
4519   bool valid = true;
4520 
4521 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4522   valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig)
4523 
4524 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
4525   valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig)
4526 
4527   // Boxed primitive objects (java_lang_boxing_object)
4528 
4529   CHECK_OFFSET("java/lang/Boolean",   java_lang_boxing_object, value, "Z");
4530   CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
4531   CHECK_OFFSET("java/lang/Float",     java_lang_boxing_object, value, "F");
4532   CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
4533   CHECK_OFFSET("java/lang/Byte",      java_lang_boxing_object, value, "B");
4534   CHECK_OFFSET("java/lang/Short",     java_lang_boxing_object, value, "S");
4535   CHECK_OFFSET("java/lang/Integer",   java_lang_boxing_object, value, "I");
4536   CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
4537 
4538   // java.lang.ref.Reference
4539 
4540   CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;");
4541   CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;");
4542   CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;");
4543   // Fake field
4544   //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;");
4545 
4546   if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed");
4547 }
4548 
4549 #endif // PRODUCT
4550 
4551 int InjectedField::compute_offset() {
4552   InstanceKlass* ik = InstanceKlass::cast(klass());
4553   for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4554     if (!may_be_java && !fs.access_flags().is_internal()) {
4555       // Only look at injected fields
4556       continue;
4557     }
4558     if (fs.name() == name() && fs.signature() == signature()) {
4559       return fs.offset();
4560     }
4561   }
4562   ResourceMark rm;
4563   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)" : "");
4564 #ifndef PRODUCT
4565   ik->print();
4566   tty->print_cr("all fields:");
4567   for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
4568     tty->print_cr("  name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int());
4569   }
4570 #endif //PRODUCT
4571   vm_exit_during_initialization("Invalid layout of preloaded class: use -Xlog:class+load=info to see the origin of the problem class");
4572   return -1;
4573 }
4574 
4575 void javaClasses_init() {
4576   JavaClasses::compute_offsets();
4577   JavaClasses::check_offsets();
4578   FilteredFieldsMap::initialize();  // must be done after computing offsets.
4579 }