1 /*
   2  * Copyright (c) 1999, 2022, 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 "jvm.h"
  27 #include "ci/ciConstant.hpp"
  28 #include "ci/ciEnv.hpp"
  29 #include "ci/ciField.hpp"
  30 #include "ci/ciInlineKlass.hpp"
  31 #include "ci/ciInstance.hpp"
  32 #include "ci/ciInstanceKlass.hpp"
  33 #include "ci/ciMethod.hpp"
  34 #include "ci/ciNullObject.hpp"
  35 #include "ci/ciReplay.hpp"
  36 #include "ci/ciSymbols.hpp"
  37 #include "ci/ciUtilities.inline.hpp"
  38 #include "classfile/javaClasses.hpp"
  39 #include "classfile/javaClasses.inline.hpp"
  40 #include "classfile/symbolTable.hpp"
  41 #include "classfile/systemDictionary.hpp"
  42 #include "classfile/vmClasses.hpp"
  43 #include "classfile/vmSymbols.hpp"
  44 #include "code/codeCache.hpp"
  45 #include "code/scopeDesc.hpp"
  46 #include "compiler/compilationPolicy.hpp"
  47 #include "compiler/compileBroker.hpp"
  48 #include "compiler/compilerEvent.hpp"
  49 #include "compiler/compileLog.hpp"
  50 #include "compiler/compileTask.hpp"
  51 #include "compiler/disassembler.hpp"
  52 #include "gc/shared/collectedHeap.inline.hpp"
  53 #include "interpreter/bytecodeStream.hpp"
  54 #include "interpreter/linkResolver.hpp"
  55 #include "jfr/jfrEvents.hpp"
  56 #include "logging/log.hpp"
  57 #include "memory/allocation.inline.hpp"
  58 #include "memory/oopFactory.hpp"
  59 #include "memory/resourceArea.hpp"
  60 #include "memory/universe.hpp"
  61 #include "oops/constantPool.inline.hpp"
  62 #include "oops/cpCache.inline.hpp"
  63 #include "oops/method.inline.hpp"
  64 #include "oops/methodData.hpp"
  65 #include "oops/objArrayKlass.hpp"
  66 #include "oops/objArrayOop.inline.hpp"
  67 #include "oops/oop.inline.hpp"
  68 #include "prims/jvmtiExport.hpp"
  69 #include "prims/methodHandles.hpp"
  70 #include "runtime/fieldDescriptor.inline.hpp"
  71 #include "runtime/handles.inline.hpp"
  72 #include "runtime/init.hpp"
  73 #include "runtime/reflection.hpp"
  74 #include "runtime/jniHandles.inline.hpp"
  75 #include "runtime/safepointVerifiers.hpp"
  76 #include "runtime/sharedRuntime.hpp"
  77 #include "runtime/thread.inline.hpp"
  78 #include "utilities/dtrace.hpp"
  79 #include "utilities/macros.hpp"
  80 #ifdef COMPILER1
  81 #include "c1/c1_Runtime1.hpp"
  82 #endif
  83 #ifdef COMPILER2
  84 #include "opto/runtime.hpp"
  85 #endif
  86 
  87 // ciEnv
  88 //
  89 // This class is the top level broker for requests from the compiler
  90 // to the VM.
  91 
  92 ciObject*              ciEnv::_null_object_instance;
  93 
  94 #define VM_CLASS_DEFN(name, ignore_s) ciInstanceKlass* ciEnv::_##name = NULL;
  95 VM_CLASSES_DO(VM_CLASS_DEFN)
  96 #undef VM_CLASS_DEFN
  97 
  98 ciSymbol*        ciEnv::_unloaded_cisymbol = NULL;
  99 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
 100 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
 101 
 102 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
 103 jobject ciEnv::_ArrayStoreException_handle = NULL;
 104 jobject ciEnv::_ClassCastException_handle = NULL;
 105 
 106 #ifndef PRODUCT
 107 static bool firstEnv = true;
 108 #endif /* PRODUCT */
 109 
 110 // ------------------------------------------------------------------
 111 // ciEnv::ciEnv
 112 ciEnv::ciEnv(CompileTask* task)
 113   : _ciEnv_arena(mtCompiler) {
 114   VM_ENTRY_MARK;
 115 
 116   // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
 117   thread->set_env(this);
 118   assert(ciEnv::current() == this, "sanity");
 119 
 120   _oop_recorder = NULL;
 121   _debug_info = NULL;
 122   _dependencies = NULL;
 123   _failure_reason = NULL;
 124   _inc_decompile_count_on_failure = true;
 125   _compilable = MethodCompilable;
 126   _break_at_compile = false;
 127   _compiler_data = NULL;
 128 #ifndef PRODUCT
 129   assert(!firstEnv, "not initialized properly");
 130 #endif /* !PRODUCT */
 131 
 132   _num_inlined_bytecodes = 0;
 133   assert(task == NULL || thread->task() == task, "sanity");
 134   if (task != NULL) {
 135     task->mark_started(os::elapsed_counter());
 136   }
 137   _task = task;
 138   _log = NULL;
 139 
 140   // Temporary buffer for creating symbols and such.
 141   _name_buffer = NULL;
 142   _name_buffer_len = 0;
 143 
 144   _arena   = &_ciEnv_arena;
 145   _factory = new (_arena) ciObjectFactory(_arena, 128);
 146 
 147   // Preload commonly referenced system ciObjects.
 148 
 149   // During VM initialization, these instances have not yet been created.
 150   // Assertions ensure that these instances are not accessed before
 151   // their initialization.
 152 
 153   assert(Universe::is_fully_initialized(), "should be complete");
 154 
 155   oop o = Universe::null_ptr_exception_instance();
 156   assert(o != NULL, "should have been initialized");
 157   _NullPointerException_instance = get_object(o)->as_instance();
 158   o = Universe::arithmetic_exception_instance();
 159   assert(o != NULL, "should have been initialized");
 160   _ArithmeticException_instance = get_object(o)->as_instance();
 161 
 162   _ArrayIndexOutOfBoundsException_instance = NULL;
 163   _ArrayStoreException_instance = NULL;
 164   _ClassCastException_instance = NULL;
 165   _the_null_string = NULL;
 166   _the_min_jint_string = NULL;
 167 
 168   _jvmti_redefinition_count = 0;
 169   _jvmti_can_hotswap_or_post_breakpoint = false;
 170   _jvmti_can_access_local_variables = false;
 171   _jvmti_can_post_on_exceptions = false;
 172   _jvmti_can_pop_frame = false;
 173 
 174   _dyno_klasses = NULL;
 175   _dyno_locs = NULL;
 176   _dyno_name[0] = '\0';
 177 }
 178 
 179 // Record components of a location descriptor string.  Components are appended by the constructor and
 180 // removed by the destructor, like a stack, so scope matters.  These location descriptors are used to
 181 // locate dynamic classes, and terminate at a Method* or oop field associated with dynamic/hidden class.
 182 //
 183 // Example use:
 184 //
 185 // {
 186 //   RecordLocation fp(this, "field1");
 187 //   // location: "field1"
 188 //   { RecordLocation fp(this, " field2"); // location: "field1 field2" }
 189 //   // location: "field1"
 190 //   { RecordLocation fp(this, " field3"); // location: "field1 field3" }
 191 //   // location: "field1"
 192 // }
 193 // // location: ""
 194 //
 195 // Examples of actual locations
 196 // @bci compiler/ciReplay/CiReplayBase$TestMain test (I)V 1 <appendix> argL0 ;
 197 // // resolve invokedynamic at bci 1 of TestMain.test, then read field "argL0" from appendix
 198 // @bci compiler/ciReplay/CiReplayBase$TestMain main ([Ljava/lang/String;)V 0 <appendix> form vmentry <vmtarget> ;
 199 // // resolve invokedynamic at bci 0 of TestMain.main, then read field "form.vmentry.method.vmtarget" from appendix
 200 // @cpi compiler/ciReplay/CiReplayBase$TestMain 56 form vmentry <vmtarget> ;
 201 // // resolve MethodHandle at cpi 56 of TestMain, then read field "vmentry.method.vmtarget" from resolved MethodHandle
 202 class RecordLocation {
 203 private:
 204   char* end;
 205 
 206   ATTRIBUTE_PRINTF(3, 4)
 207   void push(ciEnv* ci, const char* fmt, ...) {
 208     va_list args;
 209     va_start(args, fmt);
 210     push_va(ci, fmt, args);
 211     va_end(args);
 212   }
 213 
 214 public:
 215   ATTRIBUTE_PRINTF(3, 0)
 216   void push_va(ciEnv* ci, const char* fmt, va_list args) {
 217     char *e = ci->_dyno_name + strlen(ci->_dyno_name);
 218     char *m = ci->_dyno_name + ARRAY_SIZE(ci->_dyno_name) - 1;
 219     os::vsnprintf(e, m - e, fmt, args);
 220     assert(strlen(ci->_dyno_name) < (ARRAY_SIZE(ci->_dyno_name) - 1), "overflow");
 221   }
 222 
 223   // append a new component
 224   ATTRIBUTE_PRINTF(3, 4)
 225   RecordLocation(ciEnv* ci, const char* fmt, ...) {
 226     end = ci->_dyno_name + strlen(ci->_dyno_name);
 227     va_list args;
 228     va_start(args, fmt);
 229     push(ci, " ");
 230     push_va(ci, fmt, args);
 231     va_end(args);
 232   }
 233 
 234   // reset to previous state
 235   ~RecordLocation() {
 236     *end = '\0';
 237   }
 238 };
 239 
 240 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
 241   ASSERT_IN_VM;
 242 
 243   // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
 244   CompilerThread* current_thread = CompilerThread::current();
 245   assert(current_thread->env() == NULL, "must be");
 246   current_thread->set_env(this);
 247   assert(ciEnv::current() == this, "sanity");
 248 
 249   _oop_recorder = NULL;
 250   _debug_info = NULL;
 251   _dependencies = NULL;
 252   _failure_reason = NULL;
 253   _inc_decompile_count_on_failure = true;
 254   _compilable = MethodCompilable_never;
 255   _break_at_compile = false;
 256   _compiler_data = NULL;
 257 #ifndef PRODUCT
 258   assert(firstEnv, "must be first");
 259   firstEnv = false;
 260 #endif /* !PRODUCT */
 261 
 262   _num_inlined_bytecodes = 0;
 263   _task = NULL;
 264   _log = NULL;
 265 
 266   // Temporary buffer for creating symbols and such.
 267   _name_buffer = NULL;
 268   _name_buffer_len = 0;
 269 
 270   _arena   = arena;
 271   _factory = new (_arena) ciObjectFactory(_arena, 128);
 272 
 273   // Preload commonly referenced system ciObjects.
 274 
 275   // During VM initialization, these instances have not yet been created.
 276   // Assertions ensure that these instances are not accessed before
 277   // their initialization.
 278 
 279   assert(Universe::is_fully_initialized(), "must be");
 280 
 281   _NullPointerException_instance = NULL;
 282   _ArithmeticException_instance = NULL;
 283   _ArrayIndexOutOfBoundsException_instance = NULL;
 284   _ArrayStoreException_instance = NULL;
 285   _ClassCastException_instance = NULL;
 286   _the_null_string = NULL;
 287   _the_min_jint_string = NULL;
 288 
 289   _jvmti_redefinition_count = 0;
 290   _jvmti_can_hotswap_or_post_breakpoint = false;
 291   _jvmti_can_access_local_variables = false;
 292   _jvmti_can_post_on_exceptions = false;
 293   _jvmti_can_pop_frame = false;
 294 
 295   _dyno_klasses = NULL;
 296   _dyno_locs = NULL;
 297 }
 298 
 299 ciEnv::~ciEnv() {
 300   GUARDED_VM_ENTRY(
 301       CompilerThread* current_thread = CompilerThread::current();
 302       _factory->remove_symbols();
 303       // Need safepoint to clear the env on the thread.  RedefineClasses might
 304       // be reading it.
 305       current_thread->set_env(NULL);
 306   )
 307 }
 308 
 309 // ------------------------------------------------------------------
 310 // Cache Jvmti state
 311 bool ciEnv::cache_jvmti_state() {
 312   VM_ENTRY_MARK;
 313   // Get Jvmti capabilities under lock to get consistant values.
 314   MutexLocker mu(JvmtiThreadState_lock);
 315   _jvmti_redefinition_count             = JvmtiExport::redefinition_count();
 316   _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
 317   _jvmti_can_access_local_variables     = JvmtiExport::can_access_local_variables();
 318   _jvmti_can_post_on_exceptions         = JvmtiExport::can_post_on_exceptions();
 319   _jvmti_can_pop_frame                  = JvmtiExport::can_pop_frame();
 320   _jvmti_can_get_owned_monitor_info     = JvmtiExport::can_get_owned_monitor_info();
 321   _jvmti_can_walk_any_space             = JvmtiExport::can_walk_any_space();
 322   return _task != NULL && _task->method()->is_old();
 323 }
 324 
 325 bool ciEnv::jvmti_state_changed() const {
 326   // Some classes were redefined
 327   if (_jvmti_redefinition_count != JvmtiExport::redefinition_count()) {
 328     return true;
 329   }
 330 
 331   if (!_jvmti_can_access_local_variables &&
 332       JvmtiExport::can_access_local_variables()) {
 333     return true;
 334   }
 335   if (!_jvmti_can_hotswap_or_post_breakpoint &&
 336       JvmtiExport::can_hotswap_or_post_breakpoint()) {
 337     return true;
 338   }
 339   if (!_jvmti_can_post_on_exceptions &&
 340       JvmtiExport::can_post_on_exceptions()) {
 341     return true;
 342   }
 343   if (!_jvmti_can_pop_frame &&
 344       JvmtiExport::can_pop_frame()) {
 345     return true;
 346   }
 347   if (!_jvmti_can_get_owned_monitor_info &&
 348       JvmtiExport::can_get_owned_monitor_info()) {
 349     return true;
 350   }
 351   if (!_jvmti_can_walk_any_space &&
 352       JvmtiExport::can_walk_any_space()) {
 353     return true;
 354   }
 355 
 356   return false;
 357 }
 358 
 359 // ------------------------------------------------------------------
 360 // Cache DTrace flags
 361 void ciEnv::cache_dtrace_flags() {
 362   // Need lock?
 363   _dtrace_extended_probes = ExtendedDTraceProbes;
 364   if (_dtrace_extended_probes) {
 365     _dtrace_method_probes   = true;
 366     _dtrace_alloc_probes    = true;
 367   } else {
 368     _dtrace_method_probes   = DTraceMethodProbes;
 369     _dtrace_alloc_probes    = DTraceAllocProbes;
 370   }
 371 }
 372 
 373 // ------------------------------------------------------------------
 374 // helper for lazy exception creation
 375 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
 376   VM_ENTRY_MARK;
 377   if (handle == NULL) {
 378     // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
 379     InstanceKlass* ik = SystemDictionary::find_instance_klass(name, Handle(), Handle());
 380     jobject objh = NULL;
 381     if (ik != NULL) {
 382       oop obj = ik->allocate_instance(THREAD);
 383       if (!HAS_PENDING_EXCEPTION)
 384         objh = JNIHandles::make_global(Handle(THREAD, obj));
 385     }
 386     if (HAS_PENDING_EXCEPTION) {
 387       CLEAR_PENDING_EXCEPTION;
 388     } else {
 389       handle = objh;
 390     }
 391   }
 392   oop obj = JNIHandles::resolve(handle);
 393   return obj == NULL? NULL: get_object(obj)->as_instance();
 394 }
 395 
 396 ciInstanceKlass* ciEnv::get_box_klass_for_primitive_type(BasicType type) {
 397   switch (type) {
 398     case T_BOOLEAN: return Boolean_klass();
 399     case T_BYTE   : return Byte_klass();
 400     case T_CHAR   : return Character_klass();
 401     case T_SHORT  : return Short_klass();
 402     case T_INT    : return Integer_klass();
 403     case T_LONG   : return Long_klass();
 404     case T_FLOAT  : return Float_klass();
 405     case T_DOUBLE : return Double_klass();
 406 
 407     default:
 408       assert(false, "not a primitive: %s", type2name(type));
 409       return NULL;
 410   }
 411 }
 412 
 413 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
 414   if (_ArrayIndexOutOfBoundsException_instance == NULL) {
 415     _ArrayIndexOutOfBoundsException_instance
 416           = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
 417           vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
 418   }
 419   return _ArrayIndexOutOfBoundsException_instance;
 420 }
 421 ciInstance* ciEnv::ArrayStoreException_instance() {
 422   if (_ArrayStoreException_instance == NULL) {
 423     _ArrayStoreException_instance
 424           = get_or_create_exception(_ArrayStoreException_handle,
 425           vmSymbols::java_lang_ArrayStoreException());
 426   }
 427   return _ArrayStoreException_instance;
 428 }
 429 ciInstance* ciEnv::ClassCastException_instance() {
 430   if (_ClassCastException_instance == NULL) {
 431     _ClassCastException_instance
 432           = get_or_create_exception(_ClassCastException_handle,
 433           vmSymbols::java_lang_ClassCastException());
 434   }
 435   return _ClassCastException_instance;
 436 }
 437 
 438 ciInstance* ciEnv::the_null_string() {
 439   if (_the_null_string == NULL) {
 440     VM_ENTRY_MARK;
 441     _the_null_string = get_object(Universe::the_null_string())->as_instance();
 442   }
 443   return _the_null_string;
 444 }
 445 
 446 ciInstance* ciEnv::the_min_jint_string() {
 447   if (_the_min_jint_string == NULL) {
 448     VM_ENTRY_MARK;
 449     _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
 450   }
 451   return _the_min_jint_string;
 452 }
 453 
 454 // ------------------------------------------------------------------
 455 // ciEnv::get_method_from_handle
 456 ciMethod* ciEnv::get_method_from_handle(Method* method) {
 457   VM_ENTRY_MARK;
 458   return get_metadata(method)->as_method();
 459 }
 460 
 461 // ------------------------------------------------------------------
 462 // ciEnv::check_klass_accessiblity
 463 //
 464 // Note: the logic of this method should mirror the logic of
 465 // ConstantPool::verify_constant_pool_resolve.
 466 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
 467                                       Klass* resolved_klass) {
 468   if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
 469     return true;
 470   }
 471   if (accessing_klass->is_obj_array_klass()) {
 472     accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
 473   }
 474   if (!accessing_klass->is_instance_klass()) {
 475     return true;
 476   }
 477 
 478   if (resolved_klass->is_objArray_klass()) {
 479     // Find the element klass, if this is an array.
 480     resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
 481   }
 482   if (resolved_klass->is_instance_klass()) {
 483     return (Reflection::verify_class_access(accessing_klass->get_Klass(),
 484                                             InstanceKlass::cast(resolved_klass),
 485                                             true) == Reflection::ACCESS_OK);
 486   }
 487   return true;
 488 }
 489 
 490 // ------------------------------------------------------------------
 491 // ciEnv::get_klass_by_name_impl
 492 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
 493                                        const constantPoolHandle& cpool,
 494                                        ciSymbol* name,
 495                                        bool require_local) {
 496   ASSERT_IN_VM;
 497   Thread* current = Thread::current();
 498 
 499   // Now we need to check the SystemDictionary
 500   Symbol* sym = name->get_symbol();
 501   if (Signature::has_envelope(sym)) {
 502     // This is a name from a signature.  Strip off the trimmings.
 503     // Call recursive to keep scope of strippedsym.
 504     TempNewSymbol strippedsym = Signature::strip_envelope(sym);
 505     ciSymbol* strippedname = get_symbol(strippedsym);
 506     return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
 507   }
 508 
 509   // Check for prior unloaded klass.  The SystemDictionary's answers
 510   // can vary over time but the compiler needs consistency.
 511   ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
 512   if (unloaded_klass != NULL) {
 513     if (require_local)  return NULL;
 514     return unloaded_klass;
 515   }
 516 
 517   Handle loader;
 518   Handle domain;
 519   if (accessing_klass != NULL) {
 520     loader = Handle(current, accessing_klass->loader());
 521     domain = Handle(current, accessing_klass->protection_domain());
 522   }
 523 
 524   Klass* found_klass;
 525   {
 526     ttyUnlocker ttyul;  // release tty lock to avoid ordering problems
 527     MutexLocker ml(current, Compile_lock);
 528     Klass* kls;
 529     if (!require_local) {
 530       kls = SystemDictionary::find_constrained_instance_or_array_klass(current, sym, loader);
 531     } else {
 532       kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain);
 533     }
 534     found_klass = kls;
 535   }
 536 
 537   // If we fail to find an array klass, look again for its element type.
 538   // The element type may be available either locally or via constraints.
 539   // In either case, if we can find the element type in the system dictionary,
 540   // we must build an array type around it.  The CI requires array klasses
 541   // to be loaded if their element klasses are loaded, except when memory
 542   // is exhausted.
 543   if (Signature::is_array(sym) &&
 544       (sym->char_at(1) == JVM_SIGNATURE_ARRAY ||
 545        sym->char_at(1) == JVM_SIGNATURE_CLASS ||
 546        sym->char_at(1) == JVM_SIGNATURE_PRIMITIVE_OBJECT )) {
 547     // We have an unloaded array.
 548     // Build it on the fly if the element class exists.
 549     SignatureStream ss(sym, false);
 550     ss.skip_array_prefix(1);
 551     // Get element ciKlass recursively.
 552     ciKlass* elem_klass =
 553       get_klass_by_name_impl(accessing_klass,
 554                              cpool,
 555                              get_symbol(ss.as_symbol()),
 556                              require_local);
 557     if (elem_klass != NULL && elem_klass->is_loaded()) {
 558       // Now make an array for it
 559       bool null_free_array = sym->is_Q_array_signature() && sym->char_at(1) == JVM_SIGNATURE_PRIMITIVE_OBJECT;
 560       return ciArrayKlass::make(elem_klass, null_free_array);
 561     }
 562   }
 563 
 564   if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
 565     // Look inside the constant pool for pre-resolved class entries.
 566     for (int i = cpool->length() - 1; i >= 1; i--) {
 567       if (cpool->tag_at(i).is_klass()) {
 568         Klass* kls = cpool->resolved_klass_at(i);
 569         if (kls->name() == sym) {
 570           found_klass = kls;
 571           break;
 572         }
 573       }
 574     }
 575   }
 576 
 577   if (found_klass != NULL) {
 578     // Found it.  Build a CI handle.
 579     return get_klass(found_klass);
 580   }
 581 
 582   if (require_local)  return NULL;
 583 
 584   // Not yet loaded into the VM, or not governed by loader constraints.
 585   // Make a CI representative for it.
 586   int i = 0;
 587   while (sym->char_at(i) == JVM_SIGNATURE_ARRAY) {
 588     i++;
 589   }
 590   if (i > 0 && sym->char_at(i) == JVM_SIGNATURE_PRIMITIVE_OBJECT) {
 591     // An unloaded array class of inline types is an ObjArrayKlass, an
 592     // unloaded inline type class is an InstanceKlass. For consistency,
 593     // make the signature of the unloaded array of inline type use L
 594     // rather than Q.
 595     char* new_name = name_buffer(sym->utf8_length()+1);
 596     strncpy(new_name, (char*)sym->base(), sym->utf8_length());
 597     new_name[i] = JVM_SIGNATURE_CLASS;
 598     new_name[sym->utf8_length()] = '\0';
 599     return get_unloaded_klass(accessing_klass, ciSymbol::make(new_name));
 600   }
 601   return get_unloaded_klass(accessing_klass, name);
 602 }
 603 
 604 // ------------------------------------------------------------------
 605 // ciEnv::get_klass_by_name
 606 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
 607                                   ciSymbol* klass_name,
 608                                   bool require_local) {
 609   GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
 610                                                  constantPoolHandle(),
 611                                                  klass_name,
 612                                                  require_local);)
 613 }
 614 
 615 // ------------------------------------------------------------------
 616 // ciEnv::get_klass_by_index_impl
 617 //
 618 // Implementation of get_klass_by_index.
 619 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
 620                                         int index,
 621                                         bool& is_accessible,
 622                                         ciInstanceKlass* accessor) {
 623   Klass* klass = NULL;
 624   Symbol* klass_name = NULL;
 625 
 626   if (cpool->tag_at(index).is_symbol()) {
 627     klass_name = cpool->symbol_at(index);
 628   } else {
 629     // Check if it's resolved if it's not a symbol constant pool entry.
 630     klass = ConstantPool::klass_at_if_loaded(cpool, index);
 631     // Try to look it up by name.
 632     if (klass == NULL) {
 633       klass_name = cpool->klass_name_at(index);
 634     }
 635   }
 636 
 637   if (klass == NULL) {
 638     // Not found in constant pool.  Use the name to do the lookup.
 639     ciKlass* k = get_klass_by_name_impl(accessor,
 640                                         cpool,
 641                                         get_symbol(klass_name),
 642                                         false);
 643     // Calculate accessibility the hard way.
 644     if (!k->is_loaded()) {
 645       is_accessible = false;
 646     } else if (k->loader() != accessor->loader() &&
 647                get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
 648       // Loaded only remotely.  Not linked yet.
 649       is_accessible = false;
 650     } else {
 651       // Linked locally, and we must also check public/private, etc.
 652       is_accessible = check_klass_accessibility(accessor, k->get_Klass());
 653     }
 654     return k;
 655   }
 656 
 657   // Check for prior unloaded klass.  The SystemDictionary's answers
 658   // can vary over time but the compiler needs consistency.
 659   ciSymbol* name = get_symbol(klass->name());
 660   ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
 661   if (unloaded_klass != NULL) {
 662     is_accessible = false;
 663     return unloaded_klass;
 664   }
 665 
 666   // It is known to be accessible, since it was found in the constant pool.
 667   ciKlass* ciKlass = get_klass(klass);
 668   is_accessible = true;
 669 #ifndef PRODUCT
 670   if (ReplayCompiles && ciKlass == _unloaded_ciinstance_klass) {
 671     // Klass was unresolved at replay dump time and therefore not accessible.
 672     is_accessible = false;
 673   }
 674 #endif
 675   return ciKlass;
 676 }
 677 
 678 // ------------------------------------------------------------------
 679 // ciEnv::get_klass_by_index
 680 //
 681 // Get a klass from the constant pool.
 682 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
 683                                    int index,
 684                                    bool& is_accessible,
 685                                    ciInstanceKlass* accessor) {
 686   GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
 687 }
 688 
 689 // ------------------------------------------------------------------
 690 // ciEnv::is_inline_klass
 691 //
 692 // Check if the klass is an inline klass.
 693 bool ciEnv::has_Q_signature(const constantPoolHandle& cpool, int index) {
 694   GUARDED_VM_ENTRY(return cpool->klass_name_at(index)->is_Q_signature();)
 695 }
 696 
 697 // ------------------------------------------------------------------
 698 // ciEnv::unbox_primitive_value
 699 //
 700 // Unbox a primitive and return it as a ciConstant.
 701 ciConstant ciEnv::unbox_primitive_value(ciObject* cibox, BasicType expected_bt) {
 702   jvalue value;
 703   BasicType bt = java_lang_boxing_object::get_value(cibox->get_oop(), &value);
 704   if (bt != expected_bt && expected_bt != T_ILLEGAL) {
 705     assert(false, "type mismatch: %s vs %s", type2name(expected_bt), cibox->klass()->name()->as_klass_external_name());
 706     return ciConstant();
 707   }
 708   switch (bt) {
 709     case T_BOOLEAN: return ciConstant(bt, value.z);
 710     case T_BYTE:    return ciConstant(bt, value.b);
 711     case T_SHORT:   return ciConstant(bt, value.s);
 712     case T_CHAR:    return ciConstant(bt, value.c);
 713     case T_INT:     return ciConstant(bt, value.i);
 714     case T_LONG:    return ciConstant(value.j);
 715     case T_FLOAT:   return ciConstant(value.f);
 716     case T_DOUBLE:  return ciConstant(value.d);
 717 
 718     default:
 719       assert(false, "not a primitive type: %s", type2name(bt));
 720       return ciConstant();
 721   }
 722 }
 723 
 724 // ------------------------------------------------------------------
 725 // ciEnv::get_resolved_constant
 726 //
 727 ciConstant ciEnv::get_resolved_constant(const constantPoolHandle& cpool, int obj_index) {
 728   assert(obj_index >= 0, "");
 729   oop obj = cpool->resolved_references()->obj_at(obj_index);
 730   if (obj == NULL) {
 731     // Unresolved constant. It is resolved when the corresponding slot contains a non-null reference.
 732     // Null constant is represented as a sentinel (non-null) value.
 733     return ciConstant();
 734   } else if (obj == Universe::the_null_sentinel()) {
 735     return ciConstant(T_OBJECT, get_object(NULL));
 736   } else {
 737     ciObject* ciobj = get_object(obj);
 738     if (ciobj->is_array()) {
 739       return ciConstant(T_ARRAY, ciobj);
 740     } else {
 741       int cp_index = cpool->object_to_cp_index(obj_index);
 742       BasicType bt = cpool->basic_type_for_constant_at(cp_index);
 743       if (is_java_primitive(bt)) {
 744         assert(cpool->tag_at(cp_index).is_dynamic_constant(), "sanity");
 745         return unbox_primitive_value(ciobj, bt);
 746       } else {
 747         assert(ciobj->is_instance(), "should be an instance");
 748         return ciConstant(T_OBJECT, ciobj);
 749       }
 750     }
 751   }
 752 }
 753 
 754 // ------------------------------------------------------------------
 755 // ciEnv::get_constant_by_index_impl
 756 //
 757 // Implementation of get_constant_by_index().
 758 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
 759                                              int index, int obj_index,
 760                                              ciInstanceKlass* accessor) {
 761   bool ignore_will_link;
 762   if (obj_index >= 0) {
 763     ciConstant con = get_resolved_constant(cpool, obj_index);
 764     if (con.is_valid()) {
 765       return con;
 766     }
 767   }
 768   constantTag tag = cpool->tag_at(index);
 769   if (tag.is_int()) {
 770     return ciConstant(T_INT, (jint)cpool->int_at(index));
 771   } else if (tag.is_long()) {
 772     return ciConstant((jlong)cpool->long_at(index));
 773   } else if (tag.is_float()) {
 774     return ciConstant((jfloat)cpool->float_at(index));
 775   } else if (tag.is_double()) {
 776     return ciConstant((jdouble)cpool->double_at(index));
 777   } else if (tag.is_string()) {
 778     EXCEPTION_CONTEXT;
 779     assert(obj_index >= 0, "should have an object index");
 780     oop string = cpool->string_at(index, obj_index, THREAD);
 781     if (HAS_PENDING_EXCEPTION) {
 782       CLEAR_PENDING_EXCEPTION;
 783       record_out_of_memory_failure();
 784       return ciConstant();
 785     }
 786     ciInstance* constant = get_object(string)->as_instance();
 787     return ciConstant(T_OBJECT, constant);
 788   } else if (tag.is_unresolved_klass_in_error()) {
 789     return ciConstant(T_OBJECT, get_unloaded_klass_mirror(NULL));
 790   } else if (tag.is_klass() || tag.is_unresolved_klass()) {
 791     ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
 792     if (!klass->is_loaded()) {
 793       return ciConstant(T_OBJECT, get_unloaded_klass_mirror(klass));
 794     } else {
 795       if (tag.is_Qdescriptor_klass()) {
 796         return ciConstant(T_OBJECT, klass->as_inline_klass()->val_mirror());
 797       } else {
 798         return ciConstant(T_OBJECT, klass->java_mirror());
 799       }
 800     }
 801   } else if (tag.is_method_type() || tag.is_method_type_in_error()) {
 802     // must execute Java code to link this CP entry into cache[i].f1
 803     assert(obj_index >= 0, "should have an object index");
 804     ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
 805     ciObject* ciobj = get_unloaded_method_type_constant(signature);
 806     return ciConstant(T_OBJECT, ciobj);
 807   } else if (tag.is_method_handle() || tag.is_method_handle_in_error()) {
 808     // must execute Java code to link this CP entry into cache[i].f1
 809     assert(obj_index >= 0, "should have an object index");
 810     int ref_kind        = cpool->method_handle_ref_kind_at(index);
 811     int callee_index    = cpool->method_handle_klass_index_at(index);
 812     ciKlass* callee     = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
 813     ciSymbol* name      = get_symbol(cpool->method_handle_name_ref_at(index));
 814     ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
 815     ciObject* ciobj     = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
 816     return ciConstant(T_OBJECT, ciobj);
 817   } else if (tag.is_dynamic_constant() || tag.is_dynamic_constant_in_error()) {
 818     assert(obj_index >= 0, "should have an object index");
 819     return ciConstant(T_OBJECT, unloaded_ciinstance()); // unresolved dynamic constant
 820   } else {
 821     assert(false, "unknown tag: %d (%s)", tag.value(), tag.internal_name());
 822     return ciConstant();
 823   }
 824 }
 825 
 826 // ------------------------------------------------------------------
 827 // ciEnv::get_constant_by_index
 828 //
 829 // Pull a constant out of the constant pool.  How appropriate.
 830 //
 831 // Implementation note: this query is currently in no way cached.
 832 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
 833                                         int pool_index, int cache_index,
 834                                         ciInstanceKlass* accessor) {
 835   GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
 836 }
 837 
 838 // ------------------------------------------------------------------
 839 // ciEnv::get_field_by_index_impl
 840 //
 841 // Implementation of get_field_by_index.
 842 //
 843 // Implementation note: the results of field lookups are cached
 844 // in the accessor klass.
 845 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
 846                                         int index) {
 847   ciConstantPoolCache* cache = accessor->field_cache();
 848   if (cache == NULL) {
 849     ciField* field = new (arena()) ciField(accessor, index);
 850     return field;
 851   } else {
 852     ciField* field = (ciField*)cache->get(index);
 853     if (field == NULL) {
 854       field = new (arena()) ciField(accessor, index);
 855       cache->insert(index, field);
 856     }
 857     return field;
 858   }
 859 }
 860 
 861 // ------------------------------------------------------------------
 862 // ciEnv::get_field_by_index
 863 //
 864 // Get a field by index from a klass's constant pool.
 865 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
 866                                    int index) {
 867   GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
 868 }
 869 
 870 // ------------------------------------------------------------------
 871 // ciEnv::lookup_method
 872 //
 873 // Perform an appropriate method lookup based on accessor, holder,
 874 // name, signature, and bytecode.
 875 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
 876                              ciKlass*         holder,
 877                              Symbol*          name,
 878                              Symbol*          sig,
 879                              Bytecodes::Code  bc,
 880                              constantTag      tag) {
 881   InstanceKlass* accessor_klass = accessor->get_instanceKlass();
 882   Klass* holder_klass = holder->get_Klass();
 883 
 884   // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
 885   assert(check_klass_accessibility(accessor, holder_klass), "holder not accessible");
 886 
 887   LinkInfo link_info(holder_klass, name, sig, accessor_klass,
 888                      LinkInfo::AccessCheck::required,
 889                      LinkInfo::LoaderConstraintCheck::required,
 890                      tag);
 891   switch (bc) {
 892     case Bytecodes::_invokestatic:
 893       return LinkResolver::resolve_static_call_or_null(link_info);
 894     case Bytecodes::_invokespecial:
 895       return LinkResolver::resolve_special_call_or_null(link_info);
 896     case Bytecodes::_invokeinterface:
 897       return LinkResolver::linktime_resolve_interface_method_or_null(link_info);
 898     case Bytecodes::_invokevirtual:
 899       return LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
 900     default:
 901       fatal("Unhandled bytecode: %s", Bytecodes::name(bc));
 902       return NULL; // silence compiler warnings
 903   }
 904 }
 905 
 906 
 907 // ------------------------------------------------------------------
 908 // ciEnv::get_method_by_index_impl
 909 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
 910                                           int index, Bytecodes::Code bc,
 911                                           ciInstanceKlass* accessor) {
 912   assert(cpool.not_null(), "need constant pool");
 913   assert(accessor != NULL, "need origin of access");
 914   if (bc == Bytecodes::_invokedynamic) {
 915     ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
 916     bool is_resolved = !cpce->is_f1_null();
 917     // FIXME: code generation could allow for null (unlinked) call site
 918     // The call site could be made patchable as follows:
 919     // Load the appendix argument from the constant pool.
 920     // Test the appendix argument and jump to a known deopt routine if it is null.
 921     // Jump through a patchable call site, which is initially a deopt routine.
 922     // Patch the call site to the nmethod entry point of the static compiled lambda form.
 923     // As with other two-component call sites, both values must be independently verified.
 924 
 925     if (is_resolved) {
 926       // Get the invoker Method* from the constant pool.
 927       // (The appendix argument, if any, will be noted in the method's signature.)
 928       Method* adapter = cpce->f1_as_method();
 929       return get_method(adapter);
 930     }
 931 
 932     // Fake a method that is equivalent to a declared method.
 933     ciInstanceKlass* holder    = get_instance_klass(vmClasses::MethodHandle_klass());
 934     ciSymbol*        name      = ciSymbols::invokeBasic_name();
 935     ciSymbol*        signature = get_symbol(cpool->signature_ref_at(index));
 936     return get_unloaded_method(holder, name, signature, accessor);
 937   } else {
 938     const int holder_index = cpool->klass_ref_index_at(index);
 939     bool holder_is_accessible;
 940     ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
 941 
 942     // Get the method's name and signature.
 943     Symbol* name_sym = cpool->name_ref_at(index);
 944     Symbol* sig_sym  = cpool->signature_ref_at(index);
 945 
 946     if (cpool->has_preresolution()
 947         || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
 948             MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
 949       // Short-circuit lookups for JSR 292-related call sites.
 950       // That is, do not rely only on name-based lookups, because they may fail
 951       // if the names are not resolvable in the boot class loader (7056328).
 952       switch (bc) {
 953       case Bytecodes::_invokevirtual:
 954       case Bytecodes::_invokeinterface:
 955       case Bytecodes::_invokespecial:
 956       case Bytecodes::_invokestatic:
 957         {
 958           Method* m = ConstantPool::method_at_if_loaded(cpool, index);
 959           if (m != NULL) {
 960             return get_method(m);
 961           }
 962         }
 963         break;
 964       default:
 965         break;
 966       }
 967     }
 968 
 969     if (holder_is_accessible) {  // Our declared holder is loaded.
 970       constantTag tag = cpool->tag_ref_at(index);
 971       assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
 972       Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
 973       if (m != NULL &&
 974           (bc == Bytecodes::_invokestatic
 975            ?  m->method_holder()->is_not_initialized()
 976            : !m->method_holder()->is_loaded())) {
 977         m = NULL;
 978       }
 979 #ifdef ASSERT
 980       if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
 981         m = NULL;
 982       }
 983 #endif
 984       if (m != NULL) {
 985         // We found the method.
 986         return get_method(m);
 987       }
 988     }
 989 
 990     // Either the declared holder was not loaded, or the method could
 991     // not be found.  Create a dummy ciMethod to represent the failed
 992     // lookup.
 993     ciSymbol* name      = get_symbol(name_sym);
 994     ciSymbol* signature = get_symbol(sig_sym);
 995     return get_unloaded_method(holder, name, signature, accessor);
 996   }
 997 }
 998 
 999 
1000 // ------------------------------------------------------------------
1001 // ciEnv::get_instance_klass_for_declared_method_holder
1002 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
1003   // For the case of <array>.clone(), the method holder can be a ciArrayKlass
1004   // instead of a ciInstanceKlass.  For that case simply pretend that the
1005   // declared holder is Object.clone since that's where the call will bottom out.
1006   // A more correct fix would trickle out through many interfaces in CI,
1007   // requiring ciInstanceKlass* to become ciKlass* and many more places would
1008   // require checks to make sure the expected type was found.  Given that this
1009   // only occurs for clone() the more extensive fix seems like overkill so
1010   // instead we simply smear the array type into Object.
1011   guarantee(method_holder != NULL, "no method holder");
1012   if (method_holder->is_instance_klass()) {
1013     return method_holder->as_instance_klass();
1014   } else if (method_holder->is_array_klass()) {
1015     return current()->Object_klass();
1016   } else {
1017     ShouldNotReachHere();
1018   }
1019   return NULL;
1020 }
1021 
1022 
1023 // ------------------------------------------------------------------
1024 // ciEnv::get_method_by_index
1025 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
1026                                      int index, Bytecodes::Code bc,
1027                                      ciInstanceKlass* accessor) {
1028   GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
1029 }
1030 
1031 
1032 // ------------------------------------------------------------------
1033 // ciEnv::name_buffer
1034 char *ciEnv::name_buffer(int req_len) {
1035   if (_name_buffer_len < req_len) {
1036     if (_name_buffer == NULL) {
1037       _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
1038       _name_buffer_len = req_len;
1039     } else {
1040       _name_buffer =
1041         (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
1042       _name_buffer_len = req_len;
1043     }
1044   }
1045   return _name_buffer;
1046 }
1047 
1048 // ------------------------------------------------------------------
1049 // ciEnv::is_in_vm
1050 bool ciEnv::is_in_vm() {
1051   return JavaThread::current()->thread_state() == _thread_in_vm;
1052 }
1053 
1054 // ------------------------------------------------------------------
1055 // ciEnv::validate_compile_task_dependencies
1056 //
1057 // Check for changes during compilation (e.g. class loads, evolution,
1058 // breakpoints, call site invalidation).
1059 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
1060   if (failing())  return;  // no need for further checks
1061 
1062   Dependencies::DepType result = dependencies()->validate_dependencies(_task);
1063   if (result != Dependencies::end_marker) {
1064     if (result == Dependencies::call_site_target_value) {
1065       _inc_decompile_count_on_failure = false;
1066       record_failure("call site target change");
1067     } else if (Dependencies::is_klass_type(result)) {
1068       record_failure("concurrent class loading");
1069     } else {
1070       record_failure("invalid non-klass dependency");
1071     }
1072   }
1073 }
1074 
1075 // ------------------------------------------------------------------
1076 // ciEnv::register_method
1077 void ciEnv::register_method(ciMethod* target,
1078                             int entry_bci,
1079                             CodeOffsets* offsets,
1080                             int orig_pc_offset,
1081                             CodeBuffer* code_buffer,
1082                             int frame_words,
1083                             OopMapSet* oop_map_set,
1084                             ExceptionHandlerTable* handler_table,
1085                             ImplicitExceptionTable* inc_table,
1086                             AbstractCompiler* compiler,
1087                             bool has_unsafe_access,
1088                             bool has_wide_vectors,
1089                             RTMState  rtm_state,
1090                             const GrowableArrayView<RuntimeStub*>& native_invokers) {
1091   VM_ENTRY_MARK;
1092   nmethod* nm = NULL;
1093   {
1094     methodHandle method(THREAD, target->get_Method());
1095 
1096     // We require method counters to store some method state (max compilation levels) required by the compilation policy.
1097     if (method->get_method_counters(THREAD) == NULL) {
1098       record_failure("can't create method counters");
1099       // All buffers in the CodeBuffer are allocated in the CodeCache.
1100       // If the code buffer is created on each compile attempt
1101       // as in C2, then it must be freed.
1102       code_buffer->free_blob();
1103       return;
1104     }
1105 
1106     // To prevent compile queue updates.
1107     MutexLocker locker(THREAD, MethodCompileQueue_lock);
1108 
1109     // Prevent SystemDictionary::add_to_hierarchy from running
1110     // and invalidating our dependencies until we install this method.
1111     // No safepoints are allowed. Otherwise, class redefinition can occur in between.
1112     MutexLocker ml(Compile_lock);
1113     NoSafepointVerifier nsv;
1114 
1115     // Change in Jvmti state may invalidate compilation.
1116     if (!failing() && jvmti_state_changed()) {
1117       record_failure("Jvmti state change invalidated dependencies");
1118     }
1119 
1120     // Change in DTrace flags may invalidate compilation.
1121     if (!failing() &&
1122         ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
1123           (!dtrace_method_probes() && DTraceMethodProbes) ||
1124           (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
1125       record_failure("DTrace flags change invalidated dependencies");
1126     }
1127 
1128     if (!failing() && target->needs_clinit_barrier() &&
1129         target->holder()->is_in_error_state()) {
1130       record_failure("method holder is in error state");
1131     }
1132 
1133     if (!failing()) {
1134       if (log() != NULL) {
1135         // Log the dependencies which this compilation declares.
1136         dependencies()->log_all_dependencies();
1137       }
1138 
1139       // Encode the dependencies now, so we can check them right away.
1140       dependencies()->encode_content_bytes();
1141 
1142       // Check for {class loads, evolution, breakpoints, ...} during compilation
1143       validate_compile_task_dependencies(target);
1144     }
1145 #if INCLUDE_RTM_OPT
1146     if (!failing() && (rtm_state != NoRTM) &&
1147         (method()->method_data() != NULL) &&
1148         (method()->method_data()->rtm_state() != rtm_state)) {
1149       // Preemptive decompile if rtm state was changed.
1150       record_failure("RTM state change invalidated rtm code");
1151     }
1152 #endif
1153 
1154     if (failing()) {
1155       // While not a true deoptimization, it is a preemptive decompile.
1156       MethodData* mdo = method()->method_data();
1157       if (mdo != NULL && _inc_decompile_count_on_failure) {
1158         mdo->inc_decompile_count();
1159       }
1160 
1161       // All buffers in the CodeBuffer are allocated in the CodeCache.
1162       // If the code buffer is created on each compile attempt
1163       // as in C2, then it must be freed.
1164       code_buffer->free_blob();
1165       return;
1166     }
1167 
1168     assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1169     assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1170 
1171     nm =  nmethod::new_nmethod(method,
1172                                compile_id(),
1173                                entry_bci,
1174                                offsets,
1175                                orig_pc_offset,
1176                                debug_info(), dependencies(), code_buffer,
1177                                frame_words, oop_map_set,
1178                                handler_table, inc_table,
1179                                compiler, task()->comp_level(),
1180                                native_invokers);
1181 
1182     // Free codeBlobs
1183     code_buffer->free_blob();
1184 
1185     if (nm != NULL) {
1186       nm->set_has_unsafe_access(has_unsafe_access);
1187       nm->set_has_wide_vectors(has_wide_vectors);
1188 #if INCLUDE_RTM_OPT
1189       nm->set_rtm_state(rtm_state);
1190 #endif
1191 
1192       // Record successful registration.
1193       // (Put nm into the task handle *before* publishing to the Java heap.)
1194       if (task() != NULL) {
1195         task()->set_code(nm);
1196       }
1197 
1198       if (entry_bci == InvocationEntryBci) {
1199         if (TieredCompilation) {
1200           // If there is an old version we're done with it
1201           CompiledMethod* old = method->code();
1202           if (TraceMethodReplacement && old != NULL) {
1203             ResourceMark rm;
1204             char *method_name = method->name_and_sig_as_C_string();
1205             tty->print_cr("Replacing method %s", method_name);
1206           }
1207           if (old != NULL) {
1208             old->make_not_used();
1209           }
1210         }
1211 
1212         LogTarget(Info, nmethod, install) lt;
1213         if (lt.is_enabled()) {
1214           ResourceMark rm;
1215           char *method_name = method->name_and_sig_as_C_string();
1216           lt.print("Installing method (%d) %s ",
1217                     task()->comp_level(), method_name);
1218         }
1219         // Allow the code to be executed
1220         MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
1221         if (nm->make_in_use()) {
1222           method->set_code(method, nm);
1223         }
1224       } else {
1225         LogTarget(Info, nmethod, install) lt;
1226         if (lt.is_enabled()) {
1227           ResourceMark rm;
1228           char *method_name = method->name_and_sig_as_C_string();
1229           lt.print("Installing osr method (%d) %s @ %d",
1230                     task()->comp_level(), method_name, entry_bci);
1231         }
1232         MutexLocker ml(CompiledMethod_lock, Mutex::_no_safepoint_check_flag);
1233         if (nm->make_in_use()) {
1234           method->method_holder()->add_osr_nmethod(nm);
1235         }
1236       }
1237     }
1238   }  // safepoints are allowed again
1239 
1240   if (nm != NULL) {
1241     // JVMTI -- compiled method notification (must be done outside lock)
1242     nm->post_compiled_method_load_event();
1243   } else {
1244     // The CodeCache is full.
1245     record_failure("code cache is full");
1246   }
1247 }
1248 
1249 // ------------------------------------------------------------------
1250 // ciEnv::comp_level
1251 int ciEnv::comp_level() {
1252   if (task() == NULL)  return CompilationPolicy::highest_compile_level();
1253   return task()->comp_level();
1254 }
1255 
1256 // ------------------------------------------------------------------
1257 // ciEnv::compile_id
1258 uint ciEnv::compile_id() {
1259   if (task() == NULL)  return 0;
1260   return task()->compile_id();
1261 }
1262 
1263 // ------------------------------------------------------------------
1264 // ciEnv::notice_inlined_method()
1265 void ciEnv::notice_inlined_method(ciMethod* method) {
1266   _num_inlined_bytecodes += method->code_size_for_inlining();
1267 }
1268 
1269 // ------------------------------------------------------------------
1270 // ciEnv::num_inlined_bytecodes()
1271 int ciEnv::num_inlined_bytecodes() const {
1272   return _num_inlined_bytecodes;
1273 }
1274 
1275 // ------------------------------------------------------------------
1276 // ciEnv::record_failure()
1277 void ciEnv::record_failure(const char* reason) {
1278   if (_failure_reason == NULL) {
1279     // Record the first failure reason.
1280     _failure_reason = reason;
1281   }
1282 }
1283 
1284 void ciEnv::report_failure(const char* reason) {
1285   EventCompilationFailure event;
1286   if (event.should_commit()) {
1287     CompilerEvent::CompilationFailureEvent::post(event, compile_id(), reason);
1288   }
1289 }
1290 
1291 // ------------------------------------------------------------------
1292 // ciEnv::record_method_not_compilable()
1293 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1294   int new_compilable =
1295     all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1296 
1297   // Only note transitions to a worse state
1298   if (new_compilable > _compilable) {
1299     if (log() != NULL) {
1300       if (all_tiers) {
1301         log()->elem("method_not_compilable");
1302       } else {
1303         log()->elem("method_not_compilable_at_tier level='%d'",
1304                     current()->task()->comp_level());
1305       }
1306     }
1307     _compilable = new_compilable;
1308 
1309     // Reset failure reason; this one is more important.
1310     _failure_reason = NULL;
1311     record_failure(reason);
1312   }
1313 }
1314 
1315 // ------------------------------------------------------------------
1316 // ciEnv::record_out_of_memory_failure()
1317 void ciEnv::record_out_of_memory_failure() {
1318   // If memory is low, we stop compiling methods.
1319   record_method_not_compilable("out of memory");
1320 }
1321 
1322 ciInstance* ciEnv::unloaded_ciinstance() {
1323   GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1324 }
1325 
1326 // ------------------------------------------------------------------
1327 // Replay support
1328 
1329 
1330 // Lookup location descriptor for the class, if any.
1331 // Returns false if not found.
1332 bool ciEnv::dyno_loc(const InstanceKlass* ik, const char *&loc) const {
1333   bool found = false;
1334   int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1335   if (!found) {
1336     return false;
1337   }
1338   loc = _dyno_locs->at(pos);
1339   return found;
1340 }
1341 
1342 // Associate the current location descriptor with the given class and record for later lookup.
1343 void ciEnv::set_dyno_loc(const InstanceKlass* ik) {
1344   const char *loc = os::strdup(_dyno_name);
1345   bool found = false;
1346   int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1347   if (found) {
1348     _dyno_locs->at_put(pos, loc);
1349   } else {
1350     _dyno_klasses->insert_before(pos, ik);
1351     _dyno_locs->insert_before(pos, loc);
1352   }
1353 }
1354 
1355 // Associate the current location descriptor with the given class and record for later lookup.
1356 // If it turns out that there are multiple locations for the given class, that conflict should
1357 // be handled here.  Currently we choose the first location found.
1358 void ciEnv::record_best_dyno_loc(const InstanceKlass* ik) {
1359   if (!ik->is_hidden()) {
1360     return;
1361   }
1362   const char *loc0;
1363   if (dyno_loc(ik, loc0)) {
1364     // TODO: found multiple references, see if we can improve
1365     if (Verbose) {
1366       tty->print_cr("existing call site @ %s for %s",
1367                      loc0, ik->external_name());
1368     }
1369   } else {
1370     set_dyno_loc(ik);
1371   }
1372 }
1373 
1374 // Look up the location descriptor for the given class and print it to the output stream.
1375 bool ciEnv::print_dyno_loc(outputStream* out, const InstanceKlass* ik) const {
1376   const char *loc;
1377   if (dyno_loc(ik, loc)) {
1378     out->print("%s", loc);
1379     return true;
1380   } else {
1381     return false;
1382   }
1383 }
1384 
1385 // Look up the location descriptor for the given class and return it as a string.
1386 // Returns NULL if no location is found.
1387 const char *ciEnv::dyno_name(const InstanceKlass* ik) const {
1388   if (ik->is_hidden()) {
1389     stringStream ss;
1390     if (print_dyno_loc(&ss, ik)) {
1391       ss.print(" ;"); // add terminator
1392       const char* call_site = ss.as_string();
1393       return call_site;
1394     }
1395   }
1396   return NULL;
1397 }
1398 
1399 // Look up the location descriptor for the given class and return it as a string.
1400 // Returns the class name as a fallback if no location is found.
1401 const char *ciEnv::replay_name(ciKlass* k) const {
1402   if (k->is_instance_klass()) {
1403     return replay_name(k->as_instance_klass()->get_instanceKlass());
1404   }
1405   return k->name()->as_quoted_ascii();
1406 }
1407 
1408 // Look up the location descriptor for the given class and return it as a string.
1409 // Returns the class name as a fallback if no location is found.
1410 const char *ciEnv::replay_name(const InstanceKlass* ik) const {
1411   const char* name = dyno_name(ik);
1412   if (name != NULL) {
1413       return name;
1414   }
1415   return ik->name()->as_quoted_ascii();
1416 }
1417 
1418 // Process a java.lang.invoke.MemberName object and record any dynamic locations.
1419 void ciEnv::record_member(Thread* thread, oop member) {
1420   assert(java_lang_invoke_MemberName::is_instance(member), "!");
1421   // Check MemberName.clazz field
1422   oop clazz = java_lang_invoke_MemberName::clazz(member);
1423   if (clazz->klass()->is_instance_klass()) {
1424     RecordLocation fp(this, "clazz");
1425     InstanceKlass* ik = InstanceKlass::cast(clazz->klass());
1426     record_best_dyno_loc(ik);
1427   }
1428   // Check MemberName.method.vmtarget field
1429   Method* vmtarget = java_lang_invoke_MemberName::vmtarget(member);
1430   if (vmtarget != NULL) {
1431     RecordLocation fp2(this, "<vmtarget>");
1432     InstanceKlass* ik = vmtarget->method_holder();
1433     record_best_dyno_loc(ik);
1434   }
1435 }
1436 
1437 // Read an object field.  Lookup is done by name only.
1438 static inline oop obj_field(oop obj, const char* name) {
1439     return ciReplay::obj_field(obj, name);
1440 }
1441 
1442 // Process a java.lang.invoke.LambdaForm object and record any dynamic locations.
1443 void ciEnv::record_lambdaform(Thread* thread, oop form) {
1444   assert(java_lang_invoke_LambdaForm::is_instance(form), "!");
1445 
1446   {
1447     // Check LambdaForm.vmentry field
1448     oop member = java_lang_invoke_LambdaForm::vmentry(form);
1449     RecordLocation fp0(this, "vmentry");
1450     record_member(thread, member);
1451   }
1452 
1453   // Check LambdaForm.names array
1454   objArrayOop names = (objArrayOop)obj_field(form, "names");
1455   if (names != NULL) {
1456     RecordLocation lp0(this, "names");
1457     int len = names->length();
1458     for (int i = 0; i < len; ++i) {
1459       oop name = names->obj_at(i);
1460       RecordLocation lp1(this, "%d", i);
1461      // Check LambdaForm.names[i].function field
1462       RecordLocation lp2(this, "function");
1463       oop function = obj_field(name, "function");
1464       if (function != NULL) {
1465         // Check LambdaForm.names[i].function.member field
1466         oop member = obj_field(function, "member");
1467         if (member != NULL) {
1468           RecordLocation lp3(this, "member");
1469           record_member(thread, member);
1470         }
1471         // Check LambdaForm.names[i].function.resolvedHandle field
1472         oop mh = obj_field(function, "resolvedHandle");
1473         if (mh != NULL) {
1474           RecordLocation lp3(this, "resolvedHandle");
1475           record_mh(thread, mh);
1476         }
1477         // Check LambdaForm.names[i].function.invoker field
1478         oop invoker = obj_field(function, "invoker");
1479         if (invoker != NULL) {
1480           RecordLocation lp3(this, "invoker");
1481           record_mh(thread, invoker);
1482         }
1483       }
1484     }
1485   }
1486 }
1487 
1488 // Process a java.lang.invoke.MethodHandle object and record any dynamic locations.
1489 void ciEnv::record_mh(Thread* thread, oop mh) {
1490   {
1491     // Check MethodHandle.form field
1492     oop form = java_lang_invoke_MethodHandle::form(mh);
1493     RecordLocation fp(this, "form");
1494     record_lambdaform(thread, form);
1495   }
1496   // Check DirectMethodHandle.member field
1497   if (java_lang_invoke_DirectMethodHandle::is_instance(mh)) {
1498     oop member = java_lang_invoke_DirectMethodHandle::member(mh);
1499     RecordLocation fp(this, "member");
1500     record_member(thread, member);
1501   } else {
1502     // Check <MethodHandle subclass>.argL<n> fields
1503     // Probably BoundMethodHandle.Species_L*, but we only care if the field exists
1504     char arg_name[] = "argLXX";
1505     int max_arg = 99;
1506     for (int index = 0; index <= max_arg; ++index) {
1507       jio_snprintf(arg_name, sizeof (arg_name), "argL%d", index);
1508       oop arg = obj_field(mh, arg_name);
1509       if (arg != NULL) {
1510         RecordLocation fp(this, "%s", arg_name);
1511         if (arg->klass()->is_instance_klass()) {
1512           InstanceKlass* ik2 = InstanceKlass::cast(arg->klass());
1513           record_best_dyno_loc(ik2);
1514           record_call_site_obj(thread, arg);
1515         }
1516       } else {
1517         break;
1518       }
1519     }
1520   }
1521 }
1522 
1523 // Process an object found at an invokedynamic/invokehandle call site and record any dynamic locations.
1524 // Types currently supported are MethodHandle and CallSite.
1525 // The object is typically the "appendix" object, or Bootstrap Method (BSM) object.
1526 void ciEnv::record_call_site_obj(Thread* thread, oop obj)
1527 {
1528   if (obj != NULL) {
1529     if (java_lang_invoke_MethodHandle::is_instance(obj)) {
1530         record_mh(thread, obj);
1531     } else if (java_lang_invoke_ConstantCallSite::is_instance(obj)) {
1532       oop target = java_lang_invoke_CallSite::target(obj);
1533       if (target->klass()->is_instance_klass()) {
1534         RecordLocation fp(this, "target");
1535         InstanceKlass* ik = InstanceKlass::cast(target->klass());
1536         record_best_dyno_loc(ik);
1537       }
1538     }
1539   }
1540 }
1541 
1542 // Process an adapter Method* found at an invokedynamic/invokehandle call site and record any dynamic locations.
1543 void ciEnv::record_call_site_method(Thread* thread, Method* adapter) {
1544   InstanceKlass* holder = adapter->method_holder();
1545   if (!holder->is_hidden()) {
1546     return;
1547   }
1548   RecordLocation fp(this, "<adapter>");
1549   record_best_dyno_loc(holder);
1550 }
1551 
1552 // Process an invokedynamic call site and record any dynamic locations.
1553 void ciEnv::process_invokedynamic(const constantPoolHandle &cp, int indy_index, JavaThread* thread) {
1554   ConstantPoolCacheEntry* cp_cache_entry = cp->invokedynamic_cp_cache_entry_at(indy_index);
1555   if (cp_cache_entry->is_resolved(Bytecodes::_invokedynamic)) {
1556     // process the adapter
1557     Method* adapter = cp_cache_entry->f1_as_method();
1558     record_call_site_method(thread, adapter);
1559     // process the appendix
1560     oop appendix = cp_cache_entry->appendix_if_resolved(cp);
1561     {
1562       RecordLocation fp(this, "<appendix>");
1563       record_call_site_obj(thread, appendix);
1564     }
1565     // process the BSM
1566     int pool_index = cp_cache_entry->constant_pool_index();
1567     BootstrapInfo bootstrap_specifier(cp, pool_index, indy_index);
1568     oop bsm = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), thread);
1569     {
1570       RecordLocation fp(this, "<bsm>");
1571       record_call_site_obj(thread, bsm);
1572     }
1573   }
1574 }
1575 
1576 // Process an invokehandle call site and record any dynamic locations.
1577 void ciEnv::process_invokehandle(const constantPoolHandle &cp, int index, JavaThread* thread) {
1578   const int holder_index = cp->klass_ref_index_at(index);
1579   if (!cp->tag_at(holder_index).is_klass()) {
1580     return;  // not resolved
1581   }
1582   Klass* holder = ConstantPool::klass_at_if_loaded(cp, holder_index);
1583   Symbol* name = cp->name_ref_at(index);
1584   if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1585     ConstantPoolCacheEntry* cp_cache_entry = cp->cache()->entry_at(cp->decode_cpcache_index(index));
1586     if (cp_cache_entry->is_resolved(Bytecodes::_invokehandle)) {
1587       // process the adapter
1588       Method* adapter = cp_cache_entry->f1_as_method();
1589       oop appendix = cp_cache_entry->appendix_if_resolved(cp);
1590       record_call_site_method(thread, adapter);
1591       // process the appendix
1592       {
1593         RecordLocation fp(this, "<appendix>");
1594         record_call_site_obj(thread, appendix);
1595       }
1596     }
1597   }
1598 }
1599 
1600 // Search the class hierarchy for dynamic classes reachable through dynamic call sites or
1601 // constant pool entries and record for future lookup.
1602 void ciEnv::find_dynamic_call_sites() {
1603   _dyno_klasses = new (arena()) GrowableArray<const InstanceKlass*>(arena(), 100, 0, NULL);
1604   _dyno_locs    = new (arena()) GrowableArray<const char *>(arena(), 100, 0, NULL);
1605 
1606   // Iterate over the class hierarchy
1607   for (ClassHierarchyIterator iter(vmClasses::Object_klass()); !iter.done(); iter.next()) {
1608     Klass* sub = iter.klass();
1609     if (sub->is_instance_klass()) {
1610       InstanceKlass *isub = InstanceKlass::cast(sub);
1611       InstanceKlass* ik = isub;
1612       if (!ik->is_linked()) {
1613         continue;
1614       }
1615       if (ik->is_hidden()) {
1616         continue;
1617       }
1618       JavaThread* thread = JavaThread::current();
1619       const constantPoolHandle pool(thread, ik->constants());
1620 
1621       // Look for invokedynamic/invokehandle call sites
1622       for (int i = 0; i < ik->methods()->length(); ++i) {
1623         Method* m = ik->methods()->at(i);
1624 
1625         BytecodeStream bcs(methodHandle(thread, m));
1626         while (!bcs.is_last_bytecode()) {
1627           Bytecodes::Code opcode = bcs.next();
1628           opcode = bcs.raw_code();
1629           switch (opcode) {
1630           case Bytecodes::_invokedynamic:
1631           case Bytecodes::_invokehandle: {
1632             RecordLocation fp(this, "@bci %s %s %s %d",
1633                          ik->name()->as_quoted_ascii(),
1634                          m->name()->as_quoted_ascii(), m->signature()->as_quoted_ascii(),
1635                          bcs.bci());
1636             if (opcode == Bytecodes::_invokedynamic) {
1637               int index = bcs.get_index_u4();
1638               process_invokedynamic(pool, index, thread);
1639             } else {
1640               assert(opcode == Bytecodes::_invokehandle, "new switch label added?");
1641               int cp_cache_index = bcs.get_index_u2_cpcache();
1642               process_invokehandle(pool, cp_cache_index, thread);
1643             }
1644             break;
1645           }
1646           default:
1647             break;
1648           }
1649         }
1650       }
1651 
1652       // Look for MethodHandle contant pool entries
1653       RecordLocation fp(this, "@cpi %s", ik->name()->as_quoted_ascii());
1654       int len = pool->length();
1655       for (int i = 0; i < len; ++i) {
1656         if (pool->tag_at(i).is_method_handle()) {
1657           bool found_it;
1658           oop mh = pool->find_cached_constant_at(i, found_it, thread);
1659           if (mh != NULL) {
1660             RecordLocation fp(this, "%d", i);
1661             record_mh(thread, mh);
1662           }
1663         }
1664       }
1665     }
1666   }
1667 }
1668 
1669 void ciEnv::dump_compile_data(outputStream* out) {
1670   CompileTask* task = this->task();
1671   if (task) {
1672     Method* method = task->method();
1673     int entry_bci = task->osr_bci();
1674     int comp_level = task->comp_level();
1675     out->print("compile ");
1676     get_method(method)->dump_name_as_ascii(out);
1677     out->print(" %d %d", entry_bci, comp_level);
1678     if (compiler_data() != NULL) {
1679       if (is_c2_compile(comp_level)) {
1680 #ifdef COMPILER2
1681         // Dump C2 inlining data.
1682         ((Compile*)compiler_data())->dump_inline_data(out);
1683 #endif
1684       } else if (is_c1_compile(comp_level)) {
1685 #ifdef COMPILER1
1686         // Dump C1 inlining data.
1687         ((Compilation*)compiler_data())->dump_inline_data(out);
1688 #endif
1689       }
1690     }
1691     out->cr();
1692   }
1693 }
1694 
1695 // Called from VM error reporter, so be careful.
1696 // Don't safepoint or acquire any locks.
1697 //
1698 void ciEnv::dump_replay_data_helper(outputStream* out) {
1699   NoSafepointVerifier no_safepoint;
1700   ResourceMark rm;
1701 
1702   out->print_cr("version %d", REPLAY_VERSION);
1703 #if INCLUDE_JVMTI
1704   out->print_cr("JvmtiExport can_access_local_variables %d",     _jvmti_can_access_local_variables);
1705   out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1706   out->print_cr("JvmtiExport can_post_on_exceptions %d",         _jvmti_can_post_on_exceptions);
1707 #endif // INCLUDE_JVMTI
1708 
1709   find_dynamic_call_sites();
1710 
1711   GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1712   out->print_cr("# %d ciObject found", objects->length());
1713 
1714   // The very first entry is the InstanceKlass of the root method of the current compilation in order to get the right
1715   // protection domain to load subsequent classes during replay compilation.
1716   ciInstanceKlass::dump_replay_instanceKlass(out, task()->method()->method_holder());
1717 
1718   for (int i = 0; i < objects->length(); i++) {
1719     objects->at(i)->dump_replay_data(out);
1720   }
1721   dump_compile_data(out);
1722   out->flush();
1723 }
1724 
1725 // Called from VM error reporter, so be careful.
1726 // Don't safepoint or acquire any locks.
1727 //
1728 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1729   GUARDED_VM_ENTRY(
1730     dump_replay_data_helper(out);
1731   )
1732 }
1733 
1734 void ciEnv::dump_replay_data(outputStream* out) {
1735   GUARDED_VM_ENTRY(
1736     MutexLocker ml(Compile_lock);
1737     dump_replay_data_helper(out);
1738   )
1739 }
1740 
1741 void ciEnv::dump_replay_data(int compile_id) {
1742   char buffer[64];
1743   int ret = jio_snprintf(buffer, sizeof(buffer), "replay_pid%d_compid%d.log", os::current_process_id(), compile_id);
1744   if (ret > 0) {
1745     int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1746     if (fd != -1) {
1747       FILE* replay_data_file = os::fdopen(fd, "w");
1748       if (replay_data_file != NULL) {
1749         fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1750         dump_replay_data(&replay_data_stream);
1751         tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1752       } else {
1753         tty->print_cr("# Can't open file to dump replay data.");
1754       }
1755     }
1756   }
1757 }
1758 
1759 void ciEnv::dump_inline_data(int compile_id) {
1760   char buffer[64];
1761   int ret = jio_snprintf(buffer, sizeof(buffer), "inline_pid%d_compid%d.log", os::current_process_id(), compile_id);
1762   if (ret > 0) {
1763     int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1764     if (fd != -1) {
1765       FILE* inline_data_file = os::fdopen(fd, "w");
1766       if (inline_data_file != NULL) {
1767         fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1768         GUARDED_VM_ENTRY(
1769           MutexLocker ml(Compile_lock);
1770           dump_compile_data(&replay_data_stream);
1771         )
1772         replay_data_stream.flush();
1773         tty->print("# Compiler inline data is saved as: ");
1774         tty->print_cr("%s", buffer);
1775       } else {
1776         tty->print_cr("# Can't open file to dump inline data.");
1777       }
1778     }
1779   }
1780 }