1 /*
   2  * Copyright (c) 1999, 2013, 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/ciConstant.hpp"
  27 #include "ci/ciEnv.hpp"
  28 #include "ci/ciField.hpp"
  29 #include "ci/ciInstance.hpp"
  30 #include "ci/ciInstanceKlass.hpp"
  31 #include "ci/ciMethod.hpp"
  32 #include "ci/ciNullObject.hpp"
  33 #include "ci/ciReplay.hpp"
  34 #include "ci/ciUtilities.hpp"
  35 #include "classfile/systemDictionary.hpp"
  36 #include "classfile/vmSymbols.hpp"
  37 #include "code/scopeDesc.hpp"
  38 #include "compiler/compileBroker.hpp"
  39 #include "compiler/compileLog.hpp"
  40 #include "compiler/compilerOracle.hpp"
  41 #include "gc_interface/collectedHeap.inline.hpp"
  42 #include "interpreter/linkResolver.hpp"
  43 #include "memory/allocation.inline.hpp"
  44 #include "memory/oopFactory.hpp"
  45 #include "memory/universe.inline.hpp"
  46 #include "oops/methodData.hpp"
  47 #include "oops/objArrayKlass.hpp"
  48 #include "oops/oop.inline.hpp"
  49 #include "oops/oop.inline2.hpp"
  50 #include "prims/jvmtiExport.hpp"
  51 #include "runtime/init.hpp"
  52 #include "runtime/reflection.hpp"
  53 #include "runtime/sharedRuntime.hpp"
  54 #include "utilities/dtrace.hpp"
  55 #include "utilities/macros.hpp"
  56 #ifdef COMPILER1
  57 #include "c1/c1_Runtime1.hpp"
  58 #endif
  59 #ifdef COMPILER2
  60 #include "opto/runtime.hpp"
  61 #endif
  62 
  63 // ciEnv
  64 //
  65 // This class is the top level broker for requests from the compiler
  66 // to the VM.
  67 
  68 ciObject*              ciEnv::_null_object_instance;
  69 
  70 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
  71 WK_KLASSES_DO(WK_KLASS_DEFN)
  72 #undef WK_KLASS_DEFN
  73 
  74 ciSymbol*        ciEnv::_unloaded_cisymbol = NULL;
  75 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
  76 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
  77 
  78 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
  79 jobject ciEnv::_ArrayStoreException_handle = NULL;
  80 jobject ciEnv::_ClassCastException_handle = NULL;
  81 
  82 #ifndef PRODUCT
  83 static bool firstEnv = true;
  84 #endif /* PRODUCT */
  85 
  86 // ------------------------------------------------------------------
  87 // ciEnv::ciEnv
  88 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) {
  89   VM_ENTRY_MARK;
  90 
  91   // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
  92   thread->set_env(this);
  93   assert(ciEnv::current() == this, "sanity");
  94 
  95   _oop_recorder = NULL;
  96   _debug_info = NULL;
  97   _dependencies = NULL;
  98   _failure_reason = NULL;
  99   _compilable = MethodCompilable;
 100   _break_at_compile = false;
 101   _compiler_data = NULL;
 102 #ifndef PRODUCT
 103   assert(!firstEnv, "not initialized properly");
 104 #endif /* !PRODUCT */
 105 
 106   _system_dictionary_modification_counter = system_dictionary_modification_counter;
 107   _num_inlined_bytecodes = 0;
 108   assert(task == NULL || thread->task() == task, "sanity");
 109   _task = task;
 110   _log = NULL;
 111 
 112   // Temporary buffer for creating symbols and such.
 113   _name_buffer = NULL;
 114   _name_buffer_len = 0;
 115 
 116   _arena   = &_ciEnv_arena;
 117   _factory = new (_arena) ciObjectFactory(_arena, 128);
 118 
 119   // Preload commonly referenced system ciObjects.
 120 
 121   // During VM initialization, these instances have not yet been created.
 122   // Assertions ensure that these instances are not accessed before
 123   // their initialization.
 124 
 125   assert(Universe::is_fully_initialized(), "should be complete");
 126 
 127   oop o = Universe::null_ptr_exception_instance();
 128   assert(o != NULL, "should have been initialized");
 129   _NullPointerException_instance = get_object(o)->as_instance();
 130   o = Universe::arithmetic_exception_instance();
 131   assert(o != NULL, "should have been initialized");
 132   _ArithmeticException_instance = get_object(o)->as_instance();
 133 
 134   _ArrayIndexOutOfBoundsException_instance = NULL;
 135   _ArrayStoreException_instance = NULL;
 136   _ClassCastException_instance = NULL;
 137   _the_null_string = NULL;
 138   _the_min_jint_string = NULL;
 139 }
 140 
 141 ciEnv::ciEnv(Arena* arena) {
 142   ASSERT_IN_VM;
 143 
 144   // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
 145   CompilerThread* current_thread = CompilerThread::current();
 146   assert(current_thread->env() == NULL, "must be");
 147   current_thread->set_env(this);
 148   assert(ciEnv::current() == this, "sanity");
 149 
 150   _oop_recorder = NULL;
 151   _debug_info = NULL;
 152   _dependencies = NULL;
 153   _failure_reason = NULL;
 154   _compilable = MethodCompilable_never;
 155   _break_at_compile = false;
 156   _compiler_data = NULL;
 157 #ifndef PRODUCT
 158   assert(firstEnv, "must be first");
 159   firstEnv = false;
 160 #endif /* !PRODUCT */
 161 
 162   _system_dictionary_modification_counter = 0;
 163   _num_inlined_bytecodes = 0;
 164   _task = NULL;
 165   _log = NULL;
 166 
 167   // Temporary buffer for creating symbols and such.
 168   _name_buffer = NULL;
 169   _name_buffer_len = 0;
 170 
 171   _arena   = arena;
 172   _factory = new (_arena) ciObjectFactory(_arena, 128);
 173 
 174   // Preload commonly referenced system ciObjects.
 175 
 176   // During VM initialization, these instances have not yet been created.
 177   // Assertions ensure that these instances are not accessed before
 178   // their initialization.
 179 
 180   assert(Universe::is_fully_initialized(), "must be");
 181 
 182   _NullPointerException_instance = NULL;
 183   _ArithmeticException_instance = NULL;
 184   _ArrayIndexOutOfBoundsException_instance = NULL;
 185   _ArrayStoreException_instance = NULL;
 186   _ClassCastException_instance = NULL;
 187   _the_null_string = NULL;
 188   _the_min_jint_string = NULL;
 189 }
 190 
 191 ciEnv::~ciEnv() {
 192   CompilerThread* current_thread = CompilerThread::current();
 193   _factory->remove_symbols();
 194   // Need safepoint to clear the env on the thread.  RedefineClasses might
 195   // be reading it.
 196   GUARDED_VM_ENTRY(current_thread->set_env(NULL);)
 197 }
 198 
 199 // ------------------------------------------------------------------
 200 // Cache Jvmti state
 201 void ciEnv::cache_jvmti_state() {
 202   VM_ENTRY_MARK;
 203   // Get Jvmti capabilities under lock to get consistant values.
 204   MutexLocker mu(JvmtiThreadState_lock);
 205   _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
 206   _jvmti_can_access_local_variables     = JvmtiExport::can_access_local_variables();
 207   _jvmti_can_post_on_exceptions         = JvmtiExport::can_post_on_exceptions();
 208 }
 209 
 210 // ------------------------------------------------------------------
 211 // Cache DTrace flags
 212 void ciEnv::cache_dtrace_flags() {
 213   // Need lock?
 214   _dtrace_extended_probes = ExtendedDTraceProbes;
 215   if (_dtrace_extended_probes) {
 216     _dtrace_monitor_probes  = true;
 217     _dtrace_method_probes   = true;
 218     _dtrace_alloc_probes    = true;
 219   } else {
 220     _dtrace_monitor_probes  = DTraceMonitorProbes;
 221     _dtrace_method_probes   = DTraceMethodProbes;
 222     _dtrace_alloc_probes    = DTraceAllocProbes;
 223   }
 224 }
 225 
 226 // ------------------------------------------------------------------
 227 // helper for lazy exception creation
 228 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
 229   VM_ENTRY_MARK;
 230   if (handle == NULL) {
 231     // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
 232     Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
 233     jobject objh = NULL;
 234     if (!HAS_PENDING_EXCEPTION && k != NULL) {
 235       oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
 236       if (!HAS_PENDING_EXCEPTION)
 237         objh = JNIHandles::make_global(obj);
 238     }
 239     if (HAS_PENDING_EXCEPTION) {
 240       CLEAR_PENDING_EXCEPTION;
 241     } else {
 242       handle = objh;
 243     }
 244   }
 245   oop obj = JNIHandles::resolve(handle);
 246   return obj == NULL? NULL: get_object(obj)->as_instance();
 247 }
 248 
 249 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
 250   if (_ArrayIndexOutOfBoundsException_instance == NULL) {
 251     _ArrayIndexOutOfBoundsException_instance
 252           = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
 253           vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
 254   }
 255   return _ArrayIndexOutOfBoundsException_instance;
 256 }
 257 ciInstance* ciEnv::ArrayStoreException_instance() {
 258   if (_ArrayStoreException_instance == NULL) {
 259     _ArrayStoreException_instance
 260           = get_or_create_exception(_ArrayStoreException_handle,
 261           vmSymbols::java_lang_ArrayStoreException());
 262   }
 263   return _ArrayStoreException_instance;
 264 }
 265 ciInstance* ciEnv::ClassCastException_instance() {
 266   if (_ClassCastException_instance == NULL) {
 267     _ClassCastException_instance
 268           = get_or_create_exception(_ClassCastException_handle,
 269           vmSymbols::java_lang_ClassCastException());
 270   }
 271   return _ClassCastException_instance;
 272 }
 273 
 274 ciInstance* ciEnv::the_null_string() {
 275   if (_the_null_string == NULL) {
 276     VM_ENTRY_MARK;
 277     _the_null_string = get_object(Universe::the_null_string())->as_instance();
 278   }
 279   return _the_null_string;
 280 }
 281 
 282 ciInstance* ciEnv::the_min_jint_string() {
 283   if (_the_min_jint_string == NULL) {
 284     VM_ENTRY_MARK;
 285     _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
 286   }
 287   return _the_min_jint_string;
 288 }
 289 
 290 // ------------------------------------------------------------------
 291 // ciEnv::get_method_from_handle
 292 ciMethod* ciEnv::get_method_from_handle(Method* method) {
 293   VM_ENTRY_MARK;
 294   return get_metadata(method)->as_method();
 295 }
 296 
 297 // ------------------------------------------------------------------
 298 // ciEnv::array_element_offset_in_bytes
 299 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
 300   VM_ENTRY_MARK;
 301   objArrayOop a = (objArrayOop)a_h->get_oop();
 302   assert(a->is_objArray(), "");
 303   int length = a->length();
 304   oop o = o_h->get_oop();
 305   for (int i = 0; i < length; i++) {
 306     if (a->obj_at(i) == o)  return i;
 307   }
 308   return -1;
 309 }
 310 
 311 
 312 // ------------------------------------------------------------------
 313 // ciEnv::check_klass_accessiblity
 314 //
 315 // Note: the logic of this method should mirror the logic of
 316 // ConstantPool::verify_constant_pool_resolve.
 317 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
 318                                       Klass* resolved_klass) {
 319   if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
 320     return true;
 321   }
 322   if (accessing_klass->is_obj_array_klass()) {
 323     accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
 324   }
 325   if (!accessing_klass->is_instance_klass()) {
 326     return true;
 327   }
 328 
 329   if (resolved_klass->oop_is_objArray()) {
 330     // Find the element klass, if this is an array.
 331     resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
 332   }
 333   if (resolved_klass->oop_is_instance()) {
 334     return Reflection::verify_class_access(accessing_klass->get_Klass(),
 335                                            resolved_klass,
 336                                            true);
 337   }
 338   return true;
 339 }
 340 
 341 // ------------------------------------------------------------------
 342 // ciEnv::get_klass_by_name_impl
 343 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
 344                                        constantPoolHandle cpool,
 345                                        ciSymbol* name,
 346                                        bool require_local) {
 347   ASSERT_IN_VM;
 348   EXCEPTION_CONTEXT;
 349 
 350   // Now we need to check the SystemDictionary
 351   Symbol* sym = name->get_symbol();
 352   if (sym->byte_at(0) == 'L' &&
 353     sym->byte_at(sym->utf8_length()-1) == ';') {
 354     // This is a name from a signature.  Strip off the trimmings.
 355     // Call recursive to keep scope of strippedsym.
 356     TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
 357                     sym->utf8_length()-2,
 358                     KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
 359     ciSymbol* strippedname = get_symbol(strippedsym);
 360     return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
 361   }
 362 
 363   // Check for prior unloaded klass.  The SystemDictionary's answers
 364   // can vary over time but the compiler needs consistency.
 365   ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
 366   if (unloaded_klass != NULL) {
 367     if (require_local)  return NULL;
 368     return unloaded_klass;
 369   }
 370 
 371   Handle loader(THREAD, (oop)NULL);
 372   Handle domain(THREAD, (oop)NULL);
 373   if (accessing_klass != NULL) {
 374     loader = Handle(THREAD, accessing_klass->loader());
 375     domain = Handle(THREAD, accessing_klass->protection_domain());
 376   }
 377 
 378   // setup up the proper type to return on OOM
 379   ciKlass* fail_type;
 380   if (sym->byte_at(0) == '[') {
 381     fail_type = _unloaded_ciobjarrayklass;
 382   } else {
 383     fail_type = _unloaded_ciinstance_klass;
 384   }
 385   KlassHandle found_klass;
 386   {
 387     ttyUnlocker ttyul;  // release tty lock to avoid ordering problems
 388     MutexLocker ml(Compile_lock);
 389     Klass* kls;
 390     if (!require_local) {
 391       kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
 392                                                                        KILL_COMPILE_ON_FATAL_(fail_type));
 393     } else {
 394       kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
 395                                                            KILL_COMPILE_ON_FATAL_(fail_type));
 396     }
 397     found_klass = KlassHandle(THREAD, kls);
 398   }
 399 
 400   // If we fail to find an array klass, look again for its element type.
 401   // The element type may be available either locally or via constraints.
 402   // In either case, if we can find the element type in the system dictionary,
 403   // we must build an array type around it.  The CI requires array klasses
 404   // to be loaded if their element klasses are loaded, except when memory
 405   // is exhausted.
 406   if (sym->byte_at(0) == '[' &&
 407       (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
 408     // We have an unloaded array.
 409     // Build it on the fly if the element class exists.
 410     TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
 411                                                  sym->utf8_length()-1,
 412                                                  KILL_COMPILE_ON_FATAL_(fail_type));
 413 
 414     // Get element ciKlass recursively.
 415     ciKlass* elem_klass =
 416       get_klass_by_name_impl(accessing_klass,
 417                              cpool,
 418                              get_symbol(elem_sym),
 419                              require_local);
 420     if (elem_klass != NULL && elem_klass->is_loaded()) {
 421       // Now make an array for it
 422       return ciObjArrayKlass::make_impl(elem_klass);
 423     }
 424   }
 425 
 426   if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
 427     // Look inside the constant pool for pre-resolved class entries.
 428     for (int i = cpool->length() - 1; i >= 1; i--) {
 429       if (cpool->tag_at(i).is_klass()) {
 430         Klass* kls = cpool->resolved_klass_at(i);
 431         if (kls->name() == sym) {
 432           found_klass = KlassHandle(THREAD, kls);
 433           break;
 434         }
 435       }
 436     }
 437   }
 438 
 439   if (found_klass() != NULL) {
 440     // Found it.  Build a CI handle.
 441     return get_klass(found_klass());
 442   }
 443 
 444   if (require_local)  return NULL;
 445 
 446   // Not yet loaded into the VM, or not governed by loader constraints.
 447   // Make a CI representative for it.
 448   return get_unloaded_klass(accessing_klass, name);
 449 }
 450 
 451 // ------------------------------------------------------------------
 452 // ciEnv::get_klass_by_name
 453 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
 454                                   ciSymbol* klass_name,
 455                                   bool require_local) {
 456   GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
 457                                                  constantPoolHandle(),
 458                                                  klass_name,
 459                                                  require_local);)
 460 }
 461 
 462 // ------------------------------------------------------------------
 463 // ciEnv::get_klass_by_index_impl
 464 //
 465 // Implementation of get_klass_by_index.
 466 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool,
 467                                         int index,
 468                                         bool& is_accessible,
 469                                         ciInstanceKlass* accessor) {
 470   EXCEPTION_CONTEXT;
 471   KlassHandle klass; // = NULL;
 472   Symbol* klass_name = NULL;
 473 
 474   if (cpool->tag_at(index).is_symbol()) {
 475     klass_name = cpool->symbol_at(index);
 476   } else {
 477     // Check if it's resolved if it's not a symbol constant pool entry.
 478     klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index));
 479 
 480   if (klass.is_null()) {
 481     // The klass has not been inserted into the constant pool.
 482     // Try to look it up by name.
 483     {
 484       // We have to lock the cpool to keep the oop from being resolved
 485       // while we are accessing it.
 486       oop cplock = cpool->lock();
 487       ObjectLocker ol(cplock, THREAD, cplock != NULL);
 488       constantTag tag = cpool->tag_at(index);
 489       if (tag.is_klass()) {
 490         // The klass has been inserted into the constant pool
 491         // very recently.
 492         klass = KlassHandle(THREAD, cpool->resolved_klass_at(index));
 493       } else {
 494         assert(cpool->tag_at(index).is_unresolved_klass(), "wrong tag");
 495         klass_name = cpool->unresolved_klass_at(index);
 496       }
 497     }
 498   }
 499   }
 500 
 501   if (klass.is_null()) {
 502     // Not found in constant pool.  Use the name to do the lookup.
 503     ciKlass* k = get_klass_by_name_impl(accessor,
 504                                         cpool,
 505                                         get_symbol(klass_name),
 506                                         false);
 507     // Calculate accessibility the hard way.
 508     if (!k->is_loaded()) {
 509       is_accessible = false;
 510     } else if (k->loader() != accessor->loader() &&
 511                get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
 512       // Loaded only remotely.  Not linked yet.
 513       is_accessible = false;
 514     } else {
 515       // Linked locally, and we must also check public/private, etc.
 516       is_accessible = check_klass_accessibility(accessor, k->get_Klass());
 517     }
 518     return k;
 519   }
 520 
 521   // Check for prior unloaded klass.  The SystemDictionary's answers
 522   // can vary over time but the compiler needs consistency.
 523   ciSymbol* name = get_symbol(klass()->name());
 524   ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
 525   if (unloaded_klass != NULL) {
 526     is_accessible = false;
 527     return unloaded_klass;
 528   }
 529 
 530   // It is known to be accessible, since it was found in the constant pool.
 531   is_accessible = true;
 532   return get_klass(klass());
 533 }
 534 
 535 // ------------------------------------------------------------------
 536 // ciEnv::get_klass_by_index
 537 //
 538 // Get a klass from the constant pool.
 539 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool,
 540                                    int index,
 541                                    bool& is_accessible,
 542                                    ciInstanceKlass* accessor) {
 543   GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
 544 }
 545 
 546 // ------------------------------------------------------------------
 547 // ciEnv::get_constant_by_index_impl
 548 //
 549 // Implementation of get_constant_by_index().
 550 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool,
 551                                              int pool_index, int cache_index,
 552                                              ciInstanceKlass* accessor) {
 553   bool ignore_will_link;
 554   EXCEPTION_CONTEXT;
 555   int index = pool_index;
 556   if (cache_index >= 0) {
 557     assert(index < 0, "only one kind of index at a time");
 558     oop obj = cpool->resolved_references()->obj_at(cache_index);
 559     if (obj != NULL) {
 560       ciObject* ciobj = get_object(obj);
 561       return ciConstant(T_OBJECT, ciobj);
 562     }
 563     index = cpool->object_to_cp_index(cache_index);
 564   }
 565   constantTag tag = cpool->tag_at(index);
 566   if (tag.is_int()) {
 567     return ciConstant(T_INT, (jint)cpool->int_at(index));
 568   } else if (tag.is_long()) {
 569     return ciConstant((jlong)cpool->long_at(index));
 570   } else if (tag.is_float()) {
 571     return ciConstant((jfloat)cpool->float_at(index));
 572   } else if (tag.is_double()) {
 573     return ciConstant((jdouble)cpool->double_at(index));
 574   } else if (tag.is_string()) {
 575     oop string = NULL;
 576     assert(cache_index >= 0, "should have a cache index");
 577     if (cpool->is_pseudo_string_at(index)) {
 578       string = cpool->pseudo_string_at(index, cache_index);
 579     } else {
 580       string = cpool->string_at(index, cache_index, THREAD);
 581       if (HAS_PENDING_EXCEPTION) {
 582         CLEAR_PENDING_EXCEPTION;
 583         record_out_of_memory_failure();
 584         return ciConstant();
 585       }
 586     }
 587     ciObject* constant = get_object(string);
 588     assert (constant->is_instance(), "must be an instance, or not? ");
 589     return ciConstant(T_OBJECT, constant);
 590   } else if (tag.is_klass() || tag.is_unresolved_klass()) {
 591     // 4881222: allow ldc to take a class type
 592     ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
 593     if (HAS_PENDING_EXCEPTION) {
 594       CLEAR_PENDING_EXCEPTION;
 595       record_out_of_memory_failure();
 596       return ciConstant();
 597     }
 598     assert (klass->is_instance_klass() || klass->is_array_klass(),
 599             "must be an instance or array klass ");
 600     return ciConstant(T_OBJECT, klass->java_mirror());
 601   } else if (tag.is_method_type()) {
 602     // must execute Java code to link this CP entry into cache[i].f1
 603     ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
 604     ciObject* ciobj = get_unloaded_method_type_constant(signature);
 605     return ciConstant(T_OBJECT, ciobj);
 606   } else if (tag.is_method_handle()) {
 607     // must execute Java code to link this CP entry into cache[i].f1
 608     int ref_kind        = cpool->method_handle_ref_kind_at(index);
 609     int callee_index    = cpool->method_handle_klass_index_at(index);
 610     ciKlass* callee     = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
 611     ciSymbol* name      = get_symbol(cpool->method_handle_name_ref_at(index));
 612     ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
 613     ciObject* ciobj     = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
 614     return ciConstant(T_OBJECT, ciobj);
 615   } else {
 616     ShouldNotReachHere();
 617     return ciConstant();
 618   }
 619 }
 620 
 621 // ------------------------------------------------------------------
 622 // ciEnv::get_constant_by_index
 623 //
 624 // Pull a constant out of the constant pool.  How appropriate.
 625 //
 626 // Implementation note: this query is currently in no way cached.
 627 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool,
 628                                         int pool_index, int cache_index,
 629                                         ciInstanceKlass* accessor) {
 630   GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
 631 }
 632 
 633 // ------------------------------------------------------------------
 634 // ciEnv::get_field_by_index_impl
 635 //
 636 // Implementation of get_field_by_index.
 637 //
 638 // Implementation note: the results of field lookups are cached
 639 // in the accessor klass.
 640 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
 641                                         int index) {
 642   ciConstantPoolCache* cache = accessor->field_cache();
 643   if (cache == NULL) {
 644     ciField* field = new (arena()) ciField(accessor, index);
 645     return field;
 646   } else {
 647     ciField* field = (ciField*)cache->get(index);
 648     if (field == NULL) {
 649       field = new (arena()) ciField(accessor, index);
 650       cache->insert(index, field);
 651     }
 652     return field;
 653   }
 654 }
 655 
 656 // ------------------------------------------------------------------
 657 // ciEnv::get_field_by_index
 658 //
 659 // Get a field by index from a klass's constant pool.
 660 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
 661                                    int index) {
 662   GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
 663 }
 664 
 665 // ------------------------------------------------------------------
 666 // ciEnv::lookup_method
 667 //
 668 // Perform an appropriate method lookup based on accessor, holder,
 669 // name, signature, and bytecode.
 670 Method* ciEnv::lookup_method(InstanceKlass*  accessor,
 671                                InstanceKlass*  holder,
 672                                Symbol*       name,
 673                                Symbol*       sig,
 674                                Bytecodes::Code bc) {
 675   EXCEPTION_CONTEXT;
 676   KlassHandle h_accessor(THREAD, accessor);
 677   KlassHandle h_holder(THREAD, holder);
 678   LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL));
 679   methodHandle dest_method;
 680   switch (bc) {
 681   case Bytecodes::_invokestatic:
 682     dest_method =
 683       LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor);
 684     break;
 685   case Bytecodes::_invokespecial:
 686     dest_method =
 687       LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor);
 688     break;
 689   case Bytecodes::_invokeinterface:
 690     dest_method =
 691       LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig,
 692                                                               h_accessor, true);
 693     break;
 694   case Bytecodes::_invokevirtual:
 695     dest_method =
 696       LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig,
 697                                                             h_accessor, true);
 698     break;
 699   default: ShouldNotReachHere();
 700   }
 701 
 702   return dest_method();
 703 }
 704 
 705 
 706 // ------------------------------------------------------------------
 707 // ciEnv::get_method_by_index_impl
 708 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool,
 709                                           int index, Bytecodes::Code bc,
 710                                           ciInstanceKlass* accessor) {
 711   if (bc == Bytecodes::_invokedynamic) {
 712     ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
 713     bool is_resolved = !cpce->is_f1_null();
 714     // FIXME: code generation could allow for null (unlinked) call site
 715     // The call site could be made patchable as follows:
 716     // Load the appendix argument from the constant pool.
 717     // Test the appendix argument and jump to a known deopt routine if it is null.
 718     // Jump through a patchable call site, which is initially a deopt routine.
 719     // Patch the call site to the nmethod entry point of the static compiled lambda form.
 720     // As with other two-component call sites, both values must be independently verified.
 721 
 722     if (is_resolved) {
 723       // Get the invoker Method* from the constant pool.
 724       // (The appendix argument, if any, will be noted in the method's signature.)
 725       Method* adapter = cpce->f1_as_method();
 726       return get_method(adapter);
 727     }
 728 
 729     // Fake a method that is equivalent to a declared method.
 730     ciInstanceKlass* holder    = get_instance_klass(SystemDictionary::MethodHandle_klass());
 731     ciSymbol*        name      = ciSymbol::invokeBasic_name();
 732     ciSymbol*        signature = get_symbol(cpool->signature_ref_at(index));
 733     return get_unloaded_method(holder, name, signature, accessor);
 734   } else {
 735     const int holder_index = cpool->klass_ref_index_at(index);
 736     bool holder_is_accessible;
 737     ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
 738     ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder);
 739 
 740     // Get the method's name and signature.
 741     Symbol* name_sym = cpool->name_ref_at(index);
 742     Symbol* sig_sym  = cpool->signature_ref_at(index);
 743 
 744     if (cpool->has_preresolution()
 745         || (holder == ciEnv::MethodHandle_klass() &&
 746             MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
 747       // Short-circuit lookups for JSR 292-related call sites.
 748       // That is, do not rely only on name-based lookups, because they may fail
 749       // if the names are not resolvable in the boot class loader (7056328).
 750       switch (bc) {
 751       case Bytecodes::_invokevirtual:
 752       case Bytecodes::_invokeinterface:
 753       case Bytecodes::_invokespecial:
 754       case Bytecodes::_invokestatic:
 755         {
 756           Method* m = ConstantPool::method_at_if_loaded(cpool, index);
 757           if (m != NULL) {
 758             return get_method(m);
 759           }
 760         }
 761         break;
 762       }
 763     }
 764 
 765     if (holder_is_accessible) {  // Our declared holder is loaded.
 766       InstanceKlass* lookup = declared_holder->get_instanceKlass();
 767       Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc);
 768       if (m != NULL &&
 769           (bc == Bytecodes::_invokestatic
 770            ?  m->method_holder()->is_not_initialized()
 771            : !m->method_holder()->is_loaded())) {
 772         m = NULL;
 773       }
 774 #ifdef ASSERT
 775       if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
 776         m = NULL;
 777       }
 778 #endif
 779       if (m != NULL) {
 780         // We found the method.
 781         return get_method(m);
 782       }
 783     }
 784 
 785     // Either the declared holder was not loaded, or the method could
 786     // not be found.  Create a dummy ciMethod to represent the failed
 787     // lookup.
 788     ciSymbol* name      = get_symbol(name_sym);
 789     ciSymbol* signature = get_symbol(sig_sym);
 790     return get_unloaded_method(declared_holder, name, signature, accessor);
 791   }
 792 }
 793 
 794 
 795 // ------------------------------------------------------------------
 796 // ciEnv::get_instance_klass_for_declared_method_holder
 797 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
 798   // For the case of <array>.clone(), the method holder can be a ciArrayKlass
 799   // instead of a ciInstanceKlass.  For that case simply pretend that the
 800   // declared holder is Object.clone since that's where the call will bottom out.
 801   // A more correct fix would trickle out through many interfaces in CI,
 802   // requiring ciInstanceKlass* to become ciKlass* and many more places would
 803   // require checks to make sure the expected type was found.  Given that this
 804   // only occurs for clone() the more extensive fix seems like overkill so
 805   // instead we simply smear the array type into Object.
 806   guarantee(method_holder != NULL, "no method holder");
 807   if (method_holder->is_instance_klass()) {
 808     return method_holder->as_instance_klass();
 809   } else if (method_holder->is_array_klass()) {
 810     return current()->Object_klass();
 811   } else {
 812     ShouldNotReachHere();
 813   }
 814   return NULL;
 815 }
 816 
 817 
 818 // ------------------------------------------------------------------
 819 // ciEnv::get_method_by_index
 820 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool,
 821                                      int index, Bytecodes::Code bc,
 822                                      ciInstanceKlass* accessor) {
 823   GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
 824 }
 825 
 826 
 827 // ------------------------------------------------------------------
 828 // ciEnv::name_buffer
 829 char *ciEnv::name_buffer(int req_len) {
 830   if (_name_buffer_len < req_len) {
 831     if (_name_buffer == NULL) {
 832       _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
 833       _name_buffer_len = req_len;
 834     } else {
 835       _name_buffer =
 836         (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
 837       _name_buffer_len = req_len;
 838     }
 839   }
 840   return _name_buffer;
 841 }
 842 
 843 // ------------------------------------------------------------------
 844 // ciEnv::is_in_vm
 845 bool ciEnv::is_in_vm() {
 846   return JavaThread::current()->thread_state() == _thread_in_vm;
 847 }
 848 
 849 bool ciEnv::system_dictionary_modification_counter_changed() {
 850   return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
 851 }
 852 
 853 // ------------------------------------------------------------------
 854 // ciEnv::validate_compile_task_dependencies
 855 //
 856 // Check for changes during compilation (e.g. class loads, evolution,
 857 // breakpoints, call site invalidation).
 858 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
 859   if (failing())  return;  // no need for further checks
 860 
 861   // First, check non-klass dependencies as we might return early and
 862   // not check klass dependencies if the system dictionary
 863   // modification counter hasn't changed (see below).
 864   for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
 865     if (deps.is_klass_type())  continue;  // skip klass dependencies
 866     Klass* witness = deps.check_dependency();
 867     if (witness != NULL) {
 868       record_failure("invalid non-klass dependency");
 869       return;
 870     }
 871   }
 872 
 873   // Klass dependencies must be checked when the system dictionary
 874   // changes.  If logging is enabled all violated dependences will be
 875   // recorded in the log.  In debug mode check dependencies even if
 876   // the system dictionary hasn't changed to verify that no invalid
 877   // dependencies were inserted.  Any violated dependences in this
 878   // case are dumped to the tty.
 879   bool counter_changed = system_dictionary_modification_counter_changed();
 880 
 881   bool verify_deps = trueInDebug;
 882   if (!counter_changed && !verify_deps)  return;
 883 
 884   int klass_violations = 0;
 885   for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
 886     if (!deps.is_klass_type())  continue;  // skip non-klass dependencies
 887     Klass* witness = deps.check_dependency();
 888     if (witness != NULL) {
 889       klass_violations++;
 890       if (!counter_changed) {
 891         // Dependence failed but counter didn't change.  Log a message
 892         // describing what failed and allow the assert at the end to
 893         // trigger.
 894         deps.print_dependency(witness);
 895       } else if (xtty == NULL) {
 896         // If we're not logging then a single violation is sufficient,
 897         // otherwise we want to log all the dependences which were
 898         // violated.
 899         break;
 900       }
 901     }
 902   }
 903 
 904   if (klass_violations != 0) {
 905 #ifdef ASSERT
 906     if (!counter_changed && !PrintCompilation) {
 907       // Print out the compile task that failed
 908       _task->print_line();
 909     }
 910 #endif
 911     assert(counter_changed, "failed dependencies, but counter didn't change");
 912     record_failure("concurrent class loading");
 913   }
 914 }
 915 
 916 // ------------------------------------------------------------------
 917 // ciEnv::register_method
 918 void ciEnv::register_method(ciMethod* target,
 919                             int entry_bci,
 920                             CodeOffsets* offsets,
 921                             int orig_pc_offset,
 922                             CodeBuffer* code_buffer,
 923                             int frame_words,
 924                             OopMapSet* oop_map_set,
 925                             ExceptionHandlerTable* handler_table,
 926                             ImplicitExceptionTable* inc_table,
 927                             AbstractCompiler* compiler,
 928                             int comp_level,
 929                             bool has_unsafe_access,
 930                             bool has_wide_vectors) {
 931   VM_ENTRY_MARK;
 932   nmethod* nm = NULL;
 933   {
 934     // To prevent compile queue updates.
 935     MutexLocker locker(MethodCompileQueue_lock, THREAD);
 936 
 937     // Prevent SystemDictionary::add_to_hierarchy from running
 938     // and invalidating our dependencies until we install this method.
 939     MutexLocker ml(Compile_lock);
 940 
 941     // Change in Jvmti state may invalidate compilation.
 942     if (!failing() &&
 943         ( (!jvmti_can_hotswap_or_post_breakpoint() &&
 944            JvmtiExport::can_hotswap_or_post_breakpoint()) ||
 945           (!jvmti_can_access_local_variables() &&
 946            JvmtiExport::can_access_local_variables()) ||
 947           (!jvmti_can_post_on_exceptions() &&
 948            JvmtiExport::can_post_on_exceptions()) )) {
 949       record_failure("Jvmti state change invalidated dependencies");
 950     }
 951 
 952     // Change in DTrace flags may invalidate compilation.
 953     if (!failing() &&
 954         ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
 955           (!dtrace_method_probes() && DTraceMethodProbes) ||
 956           (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
 957       record_failure("DTrace flags change invalidated dependencies");
 958     }
 959 
 960     if (!failing()) {
 961       if (log() != NULL) {
 962         // Log the dependencies which this compilation declares.
 963         dependencies()->log_all_dependencies();
 964       }
 965 
 966       // Encode the dependencies now, so we can check them right away.
 967       dependencies()->encode_content_bytes();
 968 
 969       // Check for {class loads, evolution, breakpoints, ...} during compilation
 970       validate_compile_task_dependencies(target);
 971     }
 972 
 973     methodHandle method(THREAD, target->get_Method());
 974 
 975     if (failing()) {
 976       // While not a true deoptimization, it is a preemptive decompile.
 977       MethodData* mdo = method()->method_data();
 978       if (mdo != NULL) {
 979         mdo->inc_decompile_count();
 980       }
 981 
 982       // All buffers in the CodeBuffer are allocated in the CodeCache.
 983       // If the code buffer is created on each compile attempt
 984       // as in C2, then it must be freed.
 985       code_buffer->free_blob();
 986       return;
 987     }
 988 
 989     assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
 990     assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
 991 
 992     nm =  nmethod::new_nmethod(method,
 993                                compile_id(),
 994                                entry_bci,
 995                                offsets,
 996                                orig_pc_offset,
 997                                debug_info(), dependencies(), code_buffer,
 998                                frame_words, oop_map_set,
 999                                handler_table, inc_table,
1000                                compiler, comp_level);
1001 
1002     // Free codeBlobs
1003     code_buffer->free_blob();
1004 
1005     // stress test 6243940 by immediately making the method
1006     // non-entrant behind the system's back. This has serious
1007     // side effects on the code cache and is not meant for
1008     // general stress testing
1009     if (nm != NULL && StressNonEntrant) {
1010       MutexLockerEx pl(Patching_lock, Mutex::_no_safepoint_check_flag);
1011       NativeJump::patch_verified_entry(nm->entry_point(), nm->verified_entry_point(),
1012                   SharedRuntime::get_handle_wrong_method_stub());
1013     }
1014 
1015     if (nm == NULL) {
1016       // The CodeCache is full. Print out warning and delay compilation for corresponding CodeBlobType.
1017       record_failure("code cache is full");
1018       {
1019         MutexUnlocker ml(Compile_lock);
1020         MutexUnlocker locker(MethodCompileQueue_lock);
1021         CompileBroker::handle_full_code_cache(CodeCache::get_code_blob_type(comp_level));
1022       }
1023     } else {
1024       nm->set_has_unsafe_access(has_unsafe_access);
1025       nm->set_has_wide_vectors(has_wide_vectors);
1026 
1027       // Record successful registration.
1028       // (Put nm into the task handle *before* publishing to the Java heap.)
1029       if (task() != NULL)  task()->set_code(nm);
1030 
1031       if (entry_bci == InvocationEntryBci) {
1032         if (TieredCompilation) {
1033           // If there is an old version we're done with it
1034           nmethod* old = method->code();
1035           if (TraceMethodReplacement && old != NULL) {
1036             ResourceMark rm;
1037             char *method_name = method->name_and_sig_as_C_string();
1038             tty->print_cr("Replacing method %s", method_name);
1039           }
1040           if (old != NULL ) {
1041             old->make_not_entrant();
1042           }
1043         }
1044         if (TraceNMethodInstalls ) {
1045           ResourceMark rm;
1046           char *method_name = method->name_and_sig_as_C_string();
1047           ttyLocker ttyl;
1048           tty->print_cr("Installing method (%d) %s ",
1049                         comp_level,
1050                         method_name);
1051         }
1052         // Allow the code to be executed
1053         method->set_code(method, nm);
1054       } else {
1055         if (TraceNMethodInstalls ) {
1056           ResourceMark rm;
1057           char *method_name = method->name_and_sig_as_C_string();
1058           ttyLocker ttyl;
1059           tty->print_cr("Installing osr method (%d) %s @ %d",
1060                         comp_level,
1061                         method_name,
1062                         entry_bci);
1063         }
1064         method->method_holder()->add_osr_nmethod(nm);
1065 
1066       }
1067     }
1068   }
1069   // JVMTI -- compiled method notification (must be done outside lock)
1070   if (nm != NULL) {
1071     nm->post_compiled_method_load_event();
1072   }
1073 
1074 }
1075 
1076 
1077 // ------------------------------------------------------------------
1078 // ciEnv::find_system_klass
1079 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1080   VM_ENTRY_MARK;
1081   return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1082 }
1083 
1084 // ------------------------------------------------------------------
1085 // ciEnv::comp_level
1086 int ciEnv::comp_level() {
1087   if (task() == NULL)  return CompLevel_highest_tier;
1088   return task()->comp_level();
1089 }
1090 
1091 // ------------------------------------------------------------------
1092 // ciEnv::compile_id
1093 uint ciEnv::compile_id() {
1094   if (task() == NULL)  return 0;
1095   return task()->compile_id();
1096 }
1097 
1098 // ------------------------------------------------------------------
1099 // ciEnv::notice_inlined_method()
1100 void ciEnv::notice_inlined_method(ciMethod* method) {
1101   _num_inlined_bytecodes += method->code_size_for_inlining();
1102 }
1103 
1104 // ------------------------------------------------------------------
1105 // ciEnv::num_inlined_bytecodes()
1106 int ciEnv::num_inlined_bytecodes() const {
1107   return _num_inlined_bytecodes;
1108 }
1109 
1110 // ------------------------------------------------------------------
1111 // ciEnv::record_failure()
1112 void ciEnv::record_failure(const char* reason) {
1113   if (log() != NULL) {
1114     log()->elem("failure reason='%s'", reason);
1115   }
1116   if (_failure_reason == NULL) {
1117     // Record the first failure reason.
1118     _failure_reason = reason;
1119   }
1120 }
1121 
1122 // ------------------------------------------------------------------
1123 // ciEnv::record_method_not_compilable()
1124 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1125   int new_compilable =
1126     all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1127 
1128   // Only note transitions to a worse state
1129   if (new_compilable > _compilable) {
1130     if (log() != NULL) {
1131       if (all_tiers) {
1132         log()->elem("method_not_compilable");
1133       } else {
1134         log()->elem("method_not_compilable_at_tier level='%d'",
1135                     current()->task()->comp_level());
1136       }
1137     }
1138     _compilable = new_compilable;
1139 
1140     // Reset failure reason; this one is more important.
1141     _failure_reason = NULL;
1142     record_failure(reason);
1143   }
1144 }
1145 
1146 // ------------------------------------------------------------------
1147 // ciEnv::record_out_of_memory_failure()
1148 void ciEnv::record_out_of_memory_failure() {
1149   // If memory is low, we stop compiling methods.
1150   record_method_not_compilable("out of memory");
1151 }
1152 
1153 ciInstance* ciEnv::unloaded_ciinstance() {
1154   GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1155 }
1156 
1157 void ciEnv::dump_replay_data(outputStream* out) {
1158   VM_ENTRY_MARK;
1159   MutexLocker ml(Compile_lock);
1160   ResourceMark rm;
1161 #if INCLUDE_JVMTI
1162   out->print_cr("JvmtiExport can_access_local_variables %d",     _jvmti_can_access_local_variables);
1163   out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1164   out->print_cr("JvmtiExport can_post_on_exceptions %d",         _jvmti_can_post_on_exceptions);
1165 #endif // INCLUDE_JVMTI
1166 
1167   GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1168   out->print_cr("# %d ciObject found", objects->length());
1169   for (int i = 0; i < objects->length(); i++) {
1170     objects->at(i)->dump_replay_data(out);
1171   }
1172   CompileTask* task = this->task();
1173   Method* method = task->method();
1174   int entry_bci = task->osr_bci();
1175   int comp_level = task->comp_level();
1176   // Klass holder = method->method_holder();
1177   out->print_cr("compile %s %s %s %d %d",
1178                 method->klass_name()->as_quoted_ascii(),
1179                 method->name()->as_quoted_ascii(),
1180                 method->signature()->as_quoted_ascii(),
1181                 entry_bci, comp_level);
1182   out->flush();
1183 }