1 /*
   2  * Copyright (c) 1999, 2017, 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 "ci/ciField.hpp"
  27 #include "ci/ciInstance.hpp"
  28 #include "ci/ciInstanceKlass.hpp"
  29 #include "ci/ciUtilities.hpp"
  30 #include "classfile/systemDictionary.hpp"
  31 #include "memory/allocation.hpp"
  32 #include "memory/allocation.inline.hpp"
  33 #include "memory/resourceArea.hpp"
  34 #include "oops/oop.inline.hpp"
  35 #include "oops/fieldStreams.hpp"
  36 #include "runtime/fieldDescriptor.hpp"
  37 
  38 // ciInstanceKlass
  39 //
  40 // This class represents a Klass* in the HotSpot virtual machine
  41 // whose Klass part in an InstanceKlass.
  42 
  43 // ------------------------------------------------------------------
  44 // ciInstanceKlass::ciInstanceKlass
  45 //
  46 // Loaded instance klass.
  47 ciInstanceKlass::ciInstanceKlass(Klass* k) :
  48   ciKlass(k)
  49 {
  50   assert(get_Klass()->is_instance_klass(), "wrong type");
  51   assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
  52   InstanceKlass* ik = get_instanceKlass();
  53 
  54   AccessFlags access_flags = ik->access_flags();
  55   _flags = ciFlags(access_flags);
  56   _has_finalizer = access_flags.has_finalizer();
  57   _has_subklass = ik->subklass() != NULL;
  58   _init_state = ik->init_state();
  59   _nonstatic_field_size = ik->nonstatic_field_size();
  60   _has_nonstatic_fields = ik->has_nonstatic_fields();
  61   _has_nonstatic_concrete_methods = ik->has_nonstatic_concrete_methods();
  62   _is_anonymous = ik->is_anonymous();
  63   _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields:
  64   _has_injected_fields = -1;
  65   _implementor = NULL; // we will fill these lazily
  66 
  67   Thread *thread = Thread::current();
  68   if (ciObjectFactory::is_initialized()) {
  69     _loader = JNIHandles::make_local(thread, ik->class_loader());
  70     _protection_domain = JNIHandles::make_local(thread,
  71                                                 ik->protection_domain());
  72     _is_shared = false;
  73   } else {
  74     Handle h_loader(thread, ik->class_loader());
  75     Handle h_protection_domain(thread, ik->protection_domain());
  76     _loader = JNIHandles::make_global(h_loader);
  77     _protection_domain = JNIHandles::make_global(h_protection_domain);
  78     _is_shared = true;
  79   }
  80 
  81   // Lazy fields get filled in only upon request.
  82   _super  = NULL;
  83   _java_mirror = NULL;
  84 
  85   if (is_shared()) {
  86     if (k != SystemDictionary::Object_klass()) {
  87       super();
  88     }
  89     //compute_nonstatic_fields();  // done outside of constructor
  90   }
  91 
  92   _field_cache = NULL;
  93 }
  94 
  95 // Version for unloaded classes:
  96 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
  97                                  jobject loader, jobject protection_domain)
  98   : ciKlass(name, T_OBJECT)
  99 {
 100   assert(name->byte_at(0) != '[', "not an instance klass");
 101   _init_state = (InstanceKlass::ClassState)0;
 102   _nonstatic_field_size = -1;
 103   _has_nonstatic_fields = false;
 104   _nonstatic_fields = NULL;
 105   _has_injected_fields = -1;
 106   _is_anonymous = false;
 107   _loader = loader;
 108   _protection_domain = protection_domain;
 109   _is_shared = false;
 110   _super = NULL;
 111   _java_mirror = NULL;
 112   _field_cache = NULL;
 113 }
 114 
 115 
 116 
 117 // ------------------------------------------------------------------
 118 // ciInstanceKlass::compute_shared_is_initialized
 119 void ciInstanceKlass::compute_shared_init_state() {
 120   GUARDED_VM_ENTRY(
 121     InstanceKlass* ik = get_instanceKlass();
 122     _init_state = ik->init_state();
 123   )
 124 }
 125 
 126 // ------------------------------------------------------------------
 127 // ciInstanceKlass::compute_shared_has_subklass
 128 bool ciInstanceKlass::compute_shared_has_subklass() {
 129   GUARDED_VM_ENTRY(
 130     InstanceKlass* ik = get_instanceKlass();
 131     _has_subklass = ik->subklass() != NULL;
 132     return _has_subklass;
 133   )
 134 }
 135 
 136 // ------------------------------------------------------------------
 137 // ciInstanceKlass::loader
 138 oop ciInstanceKlass::loader() {
 139   ASSERT_IN_VM;
 140   return JNIHandles::resolve(_loader);
 141 }
 142 
 143 // ------------------------------------------------------------------
 144 // ciInstanceKlass::loader_handle
 145 jobject ciInstanceKlass::loader_handle() {
 146   return _loader;
 147 }
 148 
 149 // ------------------------------------------------------------------
 150 // ciInstanceKlass::protection_domain
 151 oop ciInstanceKlass::protection_domain() {
 152   ASSERT_IN_VM;
 153   return JNIHandles::resolve(_protection_domain);
 154 }
 155 
 156 // ------------------------------------------------------------------
 157 // ciInstanceKlass::protection_domain_handle
 158 jobject ciInstanceKlass::protection_domain_handle() {
 159   return _protection_domain;
 160 }
 161 
 162 // ------------------------------------------------------------------
 163 // ciInstanceKlass::field_cache
 164 //
 165 // Get the field cache associated with this klass.
 166 ciConstantPoolCache* ciInstanceKlass::field_cache() {
 167   if (is_shared()) {
 168     return NULL;
 169   }
 170   if (_field_cache == NULL) {
 171     assert(!is_java_lang_Object(), "Object has no fields");
 172     Arena* arena = CURRENT_ENV->arena();
 173     _field_cache = new (arena) ciConstantPoolCache(arena, 5);
 174   }
 175   return _field_cache;
 176 }
 177 
 178 // ------------------------------------------------------------------
 179 // ciInstanceKlass::get_canonical_holder
 180 //
 181 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
 182   #ifdef ASSERT
 183   if (!(offset >= 0 && offset < layout_helper())) {
 184     tty->print("*** get_canonical_holder(%d) on ", offset);
 185     this->print();
 186     tty->print_cr(" ***");
 187   };
 188   assert(offset >= 0 && offset < layout_helper(), "offset must be tame");
 189   #endif
 190 
 191   if (offset < instanceOopDesc::base_offset_in_bytes()) {
 192     // All header offsets belong properly to java/lang/Object.
 193     return CURRENT_ENV->Object_klass();
 194   }
 195 
 196   ciInstanceKlass* self = this;
 197   for (;;) {
 198     assert(self->is_loaded(), "must be loaded to have size");
 199     ciInstanceKlass* super = self->super();
 200     if (super == NULL || super->nof_nonstatic_fields() == 0 ||
 201         !super->contains_field_offset(offset)) {
 202       return self;
 203     } else {
 204       self = super;  // return super->get_canonical_holder(offset)
 205     }
 206   }
 207 }
 208 
 209 // ------------------------------------------------------------------
 210 // ciInstanceKlass::is_java_lang_Object
 211 //
 212 // Is this klass java.lang.Object?
 213 bool ciInstanceKlass::is_java_lang_Object() const {
 214   return equals(CURRENT_ENV->Object_klass());
 215 }
 216 
 217 // ------------------------------------------------------------------
 218 // ciInstanceKlass::uses_default_loader
 219 bool ciInstanceKlass::uses_default_loader() const {
 220   // Note:  We do not need to resolve the handle or enter the VM
 221   // in order to test null-ness.
 222   return _loader == NULL;
 223 }
 224 
 225 // ------------------------------------------------------------------
 226 
 227 /**
 228  * Return basic type of boxed value for box klass or T_OBJECT if not.
 229  */
 230 BasicType ciInstanceKlass::box_klass_type() const {
 231   if (uses_default_loader() && is_loaded()) {
 232     return SystemDictionary::box_klass_type(get_Klass());
 233   } else {
 234     return T_OBJECT;
 235   }
 236 }
 237 
 238 /**
 239  * Is this boxing klass?
 240  */
 241 bool ciInstanceKlass::is_box_klass() const {
 242   return is_java_primitive(box_klass_type());
 243 }
 244 
 245 /**
 246  *  Is this boxed value offset?
 247  */
 248 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
 249   BasicType bt = box_klass_type();
 250   return is_java_primitive(bt) &&
 251          (offset == java_lang_boxing_object::value_offset_in_bytes(bt));
 252 }
 253 
 254 // ------------------------------------------------------------------
 255 // ciInstanceKlass::is_in_package
 256 //
 257 // Is this klass in the given package?
 258 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
 259   // To avoid class loader mischief, this test always rejects application classes.
 260   if (!uses_default_loader())
 261     return false;
 262   GUARDED_VM_ENTRY(
 263     return is_in_package_impl(packagename, len);
 264   )
 265 }
 266 
 267 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
 268   ASSERT_IN_VM;
 269 
 270   // If packagename contains trailing '/' exclude it from the
 271   // prefix-test since we test for it explicitly.
 272   if (packagename[len - 1] == '/')
 273     len--;
 274 
 275   if (!name()->starts_with(packagename, len))
 276     return false;
 277 
 278   // Test if the class name is something like "java/lang".
 279   if ((len + 1) > name()->utf8_length())
 280     return false;
 281 
 282   // Test for trailing '/'
 283   if ((char) name()->byte_at(len) != '/')
 284     return false;
 285 
 286   // Make sure it's not actually in a subpackage:
 287   if (name()->index_of_at(len+1, "/", 1) >= 0)
 288     return false;
 289 
 290   return true;
 291 }
 292 
 293 // ------------------------------------------------------------------
 294 // ciInstanceKlass::print_impl
 295 //
 296 // Implementation of the print method.
 297 void ciInstanceKlass::print_impl(outputStream* st) {
 298   ciKlass::print_impl(st);
 299   GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i((address)loader()));)
 300   if (is_loaded()) {
 301     st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=",
 302               bool_to_str(is_initialized()),
 303               bool_to_str(has_finalizer()),
 304               bool_to_str(has_subklass()),
 305               layout_helper());
 306 
 307     _flags.print_klass_flags();
 308 
 309     if (_super) {
 310       st->print(" super=");
 311       _super->print_name();
 312     }
 313     if (_java_mirror) {
 314       st->print(" mirror=PRESENT");
 315     }
 316   } else {
 317     st->print(" loaded=false");
 318   }
 319 }
 320 
 321 // ------------------------------------------------------------------
 322 // ciInstanceKlass::super
 323 //
 324 // Get the superklass of this klass.
 325 ciInstanceKlass* ciInstanceKlass::super() {
 326   assert(is_loaded(), "must be loaded");
 327   if (_super == NULL && !is_java_lang_Object()) {
 328     GUARDED_VM_ENTRY(
 329       Klass* super_klass = get_instanceKlass()->super();
 330       _super = CURRENT_ENV->get_instance_klass(super_klass);
 331     )
 332   }
 333   return _super;
 334 }
 335 
 336 // ------------------------------------------------------------------
 337 // ciInstanceKlass::java_mirror
 338 //
 339 // Get the instance of java.lang.Class corresponding to this klass.
 340 // Cache it on this->_java_mirror.
 341 ciInstance* ciInstanceKlass::java_mirror() {
 342   if (is_shared()) {
 343     return ciKlass::java_mirror();
 344   }
 345   if (_java_mirror == NULL) {
 346     _java_mirror = ciKlass::java_mirror();
 347   }
 348   return _java_mirror;
 349 }
 350 
 351 // ------------------------------------------------------------------
 352 // ciInstanceKlass::unique_concrete_subklass
 353 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
 354   if (!is_loaded())     return NULL; // No change if class is not loaded
 355   if (!is_abstract())   return NULL; // Only applies to abstract classes.
 356   if (!has_subklass())  return NULL; // Must have at least one subklass.
 357   VM_ENTRY_MARK;
 358   InstanceKlass* ik = get_instanceKlass();
 359   Klass* up = ik->up_cast_abstract();
 360   assert(up->is_instance_klass(), "must be InstanceKlass");
 361   if (ik == up) {
 362     return NULL;
 363   }
 364   return CURRENT_THREAD_ENV->get_instance_klass(up);
 365 }
 366 
 367 // ------------------------------------------------------------------
 368 // ciInstanceKlass::has_finalizable_subclass
 369 bool ciInstanceKlass::has_finalizable_subclass() {
 370   if (!is_loaded())     return true;
 371   VM_ENTRY_MARK;
 372   return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL;
 373 }
 374 
 375 // ------------------------------------------------------------------
 376 // ciInstanceKlass::get_field_by_offset
 377 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
 378   if (!is_static) {
 379     for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
 380       ciField* field = _nonstatic_fields->at(i);
 381       int  field_off = field->offset_in_bytes();
 382       if (field_off == field_offset)
 383         return field;
 384       if (field_off > field_offset)
 385         break;
 386       // could do binary search or check bins, but probably not worth it
 387     }
 388     return NULL;
 389   }
 390   VM_ENTRY_MARK;
 391   InstanceKlass* k = get_instanceKlass();
 392   fieldDescriptor fd;
 393   if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
 394     return NULL;
 395   }
 396   ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
 397   return field;
 398 }
 399 
 400 // ------------------------------------------------------------------
 401 // ciInstanceKlass::get_field_by_name
 402 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
 403   VM_ENTRY_MARK;
 404   InstanceKlass* k = get_instanceKlass();
 405   fieldDescriptor fd;
 406   Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
 407   if (def == NULL) {
 408     return NULL;
 409   }
 410   ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
 411   return field;
 412 }
 413 
 414 
 415 static int sort_field_by_offset(ciField** a, ciField** b) {
 416   return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
 417   // (no worries about 32-bit overflow...)
 418 }
 419 
 420 // ------------------------------------------------------------------
 421 // ciInstanceKlass::compute_nonstatic_fields
 422 int ciInstanceKlass::compute_nonstatic_fields() {
 423   assert(is_loaded(), "must be loaded");
 424 
 425   if (_nonstatic_fields != NULL)
 426     return _nonstatic_fields->length();
 427 
 428   if (!has_nonstatic_fields()) {
 429     Arena* arena = CURRENT_ENV->arena();
 430     _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL);
 431     return 0;
 432   }
 433   assert(!is_java_lang_Object(), "bootstrap OK");
 434 
 435   // Size in bytes of my fields, including inherited fields.
 436   int fsize = nonstatic_field_size() * heapOopSize;
 437 
 438   ciInstanceKlass* super = this->super();
 439   GrowableArray<ciField*>* super_fields = NULL;
 440   if (super != NULL && super->has_nonstatic_fields()) {
 441     int super_fsize  = super->nonstatic_field_size() * heapOopSize;
 442     int super_flen   = super->nof_nonstatic_fields();
 443     super_fields = super->_nonstatic_fields;
 444     assert(super_flen == 0 || super_fields != NULL, "first get nof_fields");
 445     // See if I am no larger than my super; if so, I can use his fields.
 446     if (fsize == super_fsize) {
 447       _nonstatic_fields = super_fields;
 448       return super_fields->length();
 449     }
 450   }
 451 
 452   GrowableArray<ciField*>* fields = NULL;
 453   GUARDED_VM_ENTRY({
 454       fields = compute_nonstatic_fields_impl(super_fields);
 455     });
 456 
 457   if (fields == NULL) {
 458     // This can happen if this class (java.lang.Class) has invisible fields.
 459     if (super_fields != NULL) {
 460       _nonstatic_fields = super_fields;
 461       return super_fields->length();
 462     } else {
 463       return 0;
 464     }
 465   }
 466 
 467   int flen = fields->length();
 468 
 469   // Now sort them by offset, ascending.
 470   // (In principle, they could mix with superclass fields.)
 471   fields->sort(sort_field_by_offset);
 472   _nonstatic_fields = fields;
 473   return flen;
 474 }
 475 
 476 GrowableArray<ciField*>*
 477 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
 478                                                super_fields) {
 479   ASSERT_IN_VM;
 480   Arena* arena = CURRENT_ENV->arena();
 481   int flen = 0;
 482   GrowableArray<ciField*>* fields = NULL;
 483   InstanceKlass* k = get_instanceKlass();
 484   for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
 485     if (fs.access_flags().is_static())  continue;
 486     flen += 1;
 487   }
 488 
 489   // allocate the array:
 490   if (flen == 0) {
 491     return NULL;  // return nothing if none are locally declared
 492   }
 493   if (super_fields != NULL) {
 494     flen += super_fields->length();
 495   }
 496   fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL);
 497   if (super_fields != NULL) {
 498     fields->appendAll(super_fields);
 499   }
 500 
 501   for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
 502     if (fs.access_flags().is_static())  continue;
 503     fieldDescriptor& fd = fs.field_descriptor();
 504     ciField* field = new (arena) ciField(&fd);
 505     fields->append(field);
 506   }
 507   assert(fields->length() == flen, "sanity");
 508   return fields;
 509 }
 510 
 511 bool ciInstanceKlass::compute_injected_fields_helper() {
 512   ASSERT_IN_VM;
 513   InstanceKlass* k = get_instanceKlass();
 514 
 515   for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
 516     if (fs.access_flags().is_static())  continue;
 517     return true;
 518   }
 519   return false;
 520 }
 521 
 522 void ciInstanceKlass::compute_injected_fields() {
 523   assert(is_loaded(), "must be loaded");
 524 
 525   int has_injected_fields = 0;
 526   if (super() != NULL && super()->has_injected_fields()) {
 527     has_injected_fields = 1;
 528   } else {
 529     GUARDED_VM_ENTRY({
 530         has_injected_fields = compute_injected_fields_helper() ? 1 : 0;
 531       });
 532   }
 533   // may be concurrently initialized for shared ciInstanceKlass objects
 534   assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization");
 535   _has_injected_fields = has_injected_fields;
 536 }
 537 
 538 // ------------------------------------------------------------------
 539 // ciInstanceKlass::find_method
 540 //
 541 // Find a method in this klass.
 542 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
 543   VM_ENTRY_MARK;
 544   InstanceKlass* k = get_instanceKlass();
 545   Symbol* name_sym = name->get_symbol();
 546   Symbol* sig_sym= signature->get_symbol();
 547 
 548   Method* m = k->find_method(name_sym, sig_sym);
 549   if (m == NULL)  return NULL;
 550 
 551   return CURRENT_THREAD_ENV->get_method(m);
 552 }
 553 
 554 // ------------------------------------------------------------------
 555 // ciInstanceKlass::is_leaf_type
 556 bool ciInstanceKlass::is_leaf_type() {
 557   assert(is_loaded(), "must be loaded");
 558   if (is_shared()) {
 559     return is_final();  // approximately correct
 560   } else {
 561     return !_has_subklass && (nof_implementors() == 0);
 562   }
 563 }
 564 
 565 // ------------------------------------------------------------------
 566 // ciInstanceKlass::implementor
 567 //
 568 // Report an implementor of this interface.
 569 // Note that there are various races here, since my copy
 570 // of _nof_implementors might be out of date with respect
 571 // to results returned by InstanceKlass::implementor.
 572 // This is OK, since any dependencies we decide to assert
 573 // will be checked later under the Compile_lock.
 574 ciInstanceKlass* ciInstanceKlass::implementor() {
 575   ciInstanceKlass* impl = _implementor;
 576   if (impl == NULL) {
 577     // Go into the VM to fetch the implementor.
 578     {
 579       VM_ENTRY_MARK;
 580       Klass* k = get_instanceKlass()->implementor();
 581       if (k != NULL) {
 582         if (k == get_instanceKlass()) {
 583           // More than one implementors. Use 'this' in this case.
 584           impl = this;
 585         } else {
 586           impl = CURRENT_THREAD_ENV->get_instance_klass(k);
 587         }
 588       }
 589     }
 590     // Memoize this result.
 591     if (!is_shared()) {
 592       _implementor = impl;
 593     }
 594   }
 595   return impl;
 596 }
 597 
 598 ciInstanceKlass* ciInstanceKlass::host_klass() {
 599   assert(is_loaded(), "must be loaded");
 600   if (is_anonymous()) {
 601     VM_ENTRY_MARK
 602     Klass* host_klass = get_instanceKlass()->host_klass();
 603     return CURRENT_ENV->get_instance_klass(host_klass);
 604   }
 605   return NULL;
 606 }
 607 
 608 // Utility class for printing of the contents of the static fields for
 609 // use by compilation replay.  It only prints out the information that
 610 // could be consumed by the compiler, so for primitive types it prints
 611 // out the actual value.  For Strings it's the actual string value.
 612 // For array types it it's first level array size since that's the
 613 // only value which statically unchangeable.  For all other reference
 614 // types it simply prints out the dynamic type.
 615 
 616 class StaticFinalFieldPrinter : public FieldClosure {
 617   outputStream* _out;
 618   const char*   _holder;
 619  public:
 620   StaticFinalFieldPrinter(outputStream* out, const char* holder) :
 621     _out(out),
 622     _holder(holder) {
 623   }
 624   void do_field(fieldDescriptor* fd) {
 625     if (fd->is_final() && !fd->has_initial_value()) {
 626       ResourceMark rm;
 627       oop mirror = fd->field_holder()->java_mirror();
 628       _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
 629       switch (fd->field_type()) {
 630         case T_BYTE:    _out->print_cr("%d", mirror->byte_field(fd->offset()));   break;
 631         case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset()));   break;
 632         case T_SHORT:   _out->print_cr("%d", mirror->short_field(fd->offset()));  break;
 633         case T_CHAR:    _out->print_cr("%d", mirror->char_field(fd->offset()));   break;
 634         case T_INT:     _out->print_cr("%d", mirror->int_field(fd->offset()));    break;
 635         case T_LONG:    _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset())));   break;
 636         case T_FLOAT: {
 637           float f = mirror->float_field(fd->offset());
 638           _out->print_cr("%d", *(int*)&f);
 639           break;
 640         }
 641         case T_DOUBLE: {
 642           double d = mirror->double_field(fd->offset());
 643           _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
 644           break;
 645         }
 646         case T_ARRAY: {
 647           oop value =  mirror->obj_field_acquire(fd->offset());
 648           if (value == NULL) {
 649             _out->print_cr("null");
 650           } else {
 651             typeArrayOop ta = (typeArrayOop)value;
 652             _out->print("%d", ta->length());
 653             if (value->is_objArray()) {
 654               objArrayOop oa = (objArrayOop)value;
 655               const char* klass_name  = value->klass()->name()->as_quoted_ascii();
 656               _out->print(" %s", klass_name);
 657             }
 658             _out->cr();
 659           }
 660           break;
 661         }
 662         case T_OBJECT: {
 663           oop value =  mirror->obj_field_acquire(fd->offset());
 664           if (value == NULL) {
 665             _out->print_cr("null");
 666           } else if (value->is_instance()) {
 667             if (value->is_a(SystemDictionary::String_klass())) {
 668               _out->print("\"");
 669               _out->print_raw(java_lang_String::as_quoted_ascii(value));
 670               _out->print_cr("\"");
 671             } else {
 672               const char* klass_name  = value->klass()->name()->as_quoted_ascii();
 673               _out->print_cr("%s", klass_name);
 674             }
 675           } else {
 676             ShouldNotReachHere();
 677           }
 678           break;
 679         }
 680         default:
 681           ShouldNotReachHere();
 682         }
 683     }
 684   }
 685 };
 686 
 687 
 688 void ciInstanceKlass::dump_replay_data(outputStream* out) {
 689   ResourceMark rm;
 690 
 691   InstanceKlass* ik = get_instanceKlass();
 692   ConstantPool*  cp = ik->constants();
 693 
 694   // Try to record related loaded classes
 695   Klass* sub = ik->subklass();
 696   while (sub != NULL) {
 697     if (sub->is_instance_klass()) {
 698       out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii());
 699     }
 700     sub = sub->next_sibling();
 701   }
 702 
 703   // Dump out the state of the constant pool tags.  During replay the
 704   // tags will be validated for things which shouldn't change and
 705   // classes will be resolved if the tags indicate that they were
 706   // resolved at compile time.
 707   out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(),
 708              is_linked(), is_initialized(), cp->length());
 709   for (int index = 1; index < cp->length(); index++) {
 710     out->print(" %d", cp->tags()->at(index));
 711   }
 712   out->cr();
 713   if (is_initialized()) {
 714     //  Dump out the static final fields in case the compilation relies
 715     //  on their value for correct replay.
 716     StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii());
 717     ik->do_local_static_fields(&sffp);
 718   }
 719 }
--- EOF ---