1 /*
   2  * Copyright (c) 1999, 2016, 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/codeCache.hpp"
  38 #include "code/scopeDesc.hpp"
  39 #include "compiler/compileBroker.hpp"
  40 #include "compiler/compileLog.hpp"
  41 #include "compiler/disassembler.hpp"
  42 #include "gc/shared/collectedHeap.inline.hpp"
  43 #include "interpreter/linkResolver.hpp"
  44 #include "memory/allocation.inline.hpp"
  45 #include "memory/oopFactory.hpp"
  46 #include "memory/resourceArea.hpp"
  47 #include "memory/universe.inline.hpp"
  48 #include "oops/methodData.hpp"
  49 #include "oops/objArrayKlass.hpp"
  50 #include "oops/objArrayOop.inline.hpp"
  51 #include "oops/oop.inline.hpp"
  52 #include "prims/jvmtiExport.hpp"
  53 #include "runtime/init.hpp"
  54 #include "runtime/reflection.hpp"
  55 #include "runtime/sharedRuntime.hpp"
  56 #include "runtime/thread.inline.hpp"
  57 #include "trace/tracing.hpp"
  58 #include "utilities/dtrace.hpp"
  59 #include "utilities/macros.hpp"
  60 #ifdef COMPILER1
  61 #include "c1/c1_Runtime1.hpp"
  62 #endif
  63 #ifdef COMPILER2
  64 #include "opto/runtime.hpp"
  65 #endif
  66 
  67 // ciEnv
  68 //
  69 // This class is the top level broker for requests from the compiler
  70 // to the VM.
  71 
  72 ciObject*              ciEnv::_null_object_instance;
  73 
  74 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
  75 WK_KLASSES_DO(WK_KLASS_DEFN)
  76 #undef WK_KLASS_DEFN
  77 
  78 ciSymbol*        ciEnv::_unloaded_cisymbol = NULL;
  79 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
  80 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
  81 
  82 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
  83 jobject ciEnv::_ArrayStoreException_handle = NULL;
  84 jobject ciEnv::_ClassCastException_handle = NULL;
  85 
  86 #ifndef PRODUCT
  87 static bool firstEnv = true;
  88 #endif /* PRODUCT */
  89 
  90 // ------------------------------------------------------------------
  91 // ciEnv::ciEnv
  92 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter)
  93   : _ciEnv_arena(mtCompiler) {
  94   VM_ENTRY_MARK;
  95 
  96   // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
  97   thread->set_env(this);
  98   assert(ciEnv::current() == this, "sanity");
  99 
 100   _oop_recorder = NULL;
 101   _debug_info = NULL;
 102   _dependencies = NULL;
 103   _failure_reason = NULL;
 104   _compilable = MethodCompilable;
 105   _break_at_compile = false;
 106   _compiler_data = NULL;
 107 #ifndef PRODUCT
 108   assert(!firstEnv, "not initialized properly");
 109 #endif /* !PRODUCT */
 110 
 111   _system_dictionary_modification_counter = system_dictionary_modification_counter;
 112   _num_inlined_bytecodes = 0;
 113   assert(task == NULL || thread->task() == task, "sanity");
 114   _task = task;
 115   _log = NULL;
 116 
 117   // Temporary buffer for creating symbols and such.
 118   _name_buffer = NULL;
 119   _name_buffer_len = 0;
 120 
 121   _arena   = &_ciEnv_arena;
 122   _factory = new (_arena) ciObjectFactory(_arena, 128);
 123 
 124   // Preload commonly referenced system ciObjects.
 125 
 126   // During VM initialization, these instances have not yet been created.
 127   // Assertions ensure that these instances are not accessed before
 128   // their initialization.
 129 
 130   assert(Universe::is_fully_initialized(), "should be complete");
 131 
 132   oop o = Universe::null_ptr_exception_instance();
 133   assert(o != NULL, "should have been initialized");
 134   _NullPointerException_instance = get_object(o)->as_instance();
 135   o = Universe::arithmetic_exception_instance();
 136   assert(o != NULL, "should have been initialized");
 137   _ArithmeticException_instance = get_object(o)->as_instance();
 138 
 139   _ArrayIndexOutOfBoundsException_instance = NULL;
 140   _ArrayStoreException_instance = NULL;
 141   _ClassCastException_instance = NULL;
 142   _the_null_string = NULL;
 143   _the_min_jint_string = NULL;
 144 
 145   _jvmti_can_hotswap_or_post_breakpoint = false;
 146   _jvmti_can_access_local_variables = false;
 147   _jvmti_can_post_on_exceptions = false;
 148   _jvmti_can_pop_frame = false;
 149 }
 150 
 151 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
 152   ASSERT_IN_VM;
 153 
 154   // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
 155   CompilerThread* current_thread = CompilerThread::current();
 156   assert(current_thread->env() == NULL, "must be");
 157   current_thread->set_env(this);
 158   assert(ciEnv::current() == this, "sanity");
 159 
 160   _oop_recorder = NULL;
 161   _debug_info = NULL;
 162   _dependencies = NULL;
 163   _failure_reason = NULL;
 164   _compilable = MethodCompilable_never;
 165   _break_at_compile = false;
 166   _compiler_data = NULL;
 167 #ifndef PRODUCT
 168   assert(firstEnv, "must be first");
 169   firstEnv = false;
 170 #endif /* !PRODUCT */
 171 
 172   _system_dictionary_modification_counter = 0;
 173   _num_inlined_bytecodes = 0;
 174   _task = NULL;
 175   _log = NULL;
 176 
 177   // Temporary buffer for creating symbols and such.
 178   _name_buffer = NULL;
 179   _name_buffer_len = 0;
 180 
 181   _arena   = arena;
 182   _factory = new (_arena) ciObjectFactory(_arena, 128);
 183 
 184   // Preload commonly referenced system ciObjects.
 185 
 186   // During VM initialization, these instances have not yet been created.
 187   // Assertions ensure that these instances are not accessed before
 188   // their initialization.
 189 
 190   assert(Universe::is_fully_initialized(), "must be");
 191 
 192   _NullPointerException_instance = NULL;
 193   _ArithmeticException_instance = NULL;
 194   _ArrayIndexOutOfBoundsException_instance = NULL;
 195   _ArrayStoreException_instance = NULL;
 196   _ClassCastException_instance = NULL;
 197   _the_null_string = NULL;
 198   _the_min_jint_string = NULL;
 199 
 200   _jvmti_can_hotswap_or_post_breakpoint = false;
 201   _jvmti_can_access_local_variables = false;
 202   _jvmti_can_post_on_exceptions = false;
 203   _jvmti_can_pop_frame = false;
 204 }
 205 
 206 ciEnv::~ciEnv() {
 207   CompilerThread* current_thread = CompilerThread::current();
 208   _factory->remove_symbols();
 209   // Need safepoint to clear the env on the thread.  RedefineClasses might
 210   // be reading it.
 211   GUARDED_VM_ENTRY(current_thread->set_env(NULL);)
 212 }
 213 
 214 // ------------------------------------------------------------------
 215 // Cache Jvmti state
 216 void ciEnv::cache_jvmti_state() {
 217   VM_ENTRY_MARK;
 218   // Get Jvmti capabilities under lock to get consistant values.
 219   MutexLocker mu(JvmtiThreadState_lock);
 220   _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
 221   _jvmti_can_access_local_variables     = JvmtiExport::can_access_local_variables();
 222   _jvmti_can_post_on_exceptions         = JvmtiExport::can_post_on_exceptions();
 223   _jvmti_can_pop_frame                  = JvmtiExport::can_pop_frame();
 224 }
 225 
 226 bool ciEnv::should_retain_local_variables() const {
 227   return _jvmti_can_access_local_variables || _jvmti_can_pop_frame;
 228 }
 229 
 230 bool ciEnv::jvmti_state_changed() const {
 231   if (!_jvmti_can_access_local_variables &&
 232       JvmtiExport::can_access_local_variables()) {
 233     return true;
 234   }
 235   if (!_jvmti_can_hotswap_or_post_breakpoint &&
 236       JvmtiExport::can_hotswap_or_post_breakpoint()) {
 237     return true;
 238   }
 239   if (!_jvmti_can_post_on_exceptions &&
 240       JvmtiExport::can_post_on_exceptions()) {
 241     return true;
 242   }
 243   if (!_jvmti_can_pop_frame &&
 244       JvmtiExport::can_pop_frame()) {
 245     return true;
 246   }
 247   return false;
 248 }
 249 
 250 // ------------------------------------------------------------------
 251 // Cache DTrace flags
 252 void ciEnv::cache_dtrace_flags() {
 253   // Need lock?
 254   _dtrace_extended_probes = ExtendedDTraceProbes;
 255   if (_dtrace_extended_probes) {
 256     _dtrace_monitor_probes  = true;
 257     _dtrace_method_probes   = true;
 258     _dtrace_alloc_probes    = true;
 259   } else {
 260     _dtrace_monitor_probes  = DTraceMonitorProbes;
 261     _dtrace_method_probes   = DTraceMethodProbes;
 262     _dtrace_alloc_probes    = DTraceAllocProbes;
 263   }
 264 }
 265 
 266 // ------------------------------------------------------------------
 267 // helper for lazy exception creation
 268 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
 269   VM_ENTRY_MARK;
 270   if (handle == NULL) {
 271     // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
 272     Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
 273     jobject objh = NULL;
 274     if (!HAS_PENDING_EXCEPTION && k != NULL) {
 275       oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
 276       if (!HAS_PENDING_EXCEPTION)
 277         objh = JNIHandles::make_global(obj);
 278     }
 279     if (HAS_PENDING_EXCEPTION) {
 280       CLEAR_PENDING_EXCEPTION;
 281     } else {
 282       handle = objh;
 283     }
 284   }
 285   oop obj = JNIHandles::resolve(handle);
 286   return obj == NULL? NULL: get_object(obj)->as_instance();
 287 }
 288 
 289 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
 290   if (_ArrayIndexOutOfBoundsException_instance == NULL) {
 291     _ArrayIndexOutOfBoundsException_instance
 292           = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
 293           vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
 294   }
 295   return _ArrayIndexOutOfBoundsException_instance;
 296 }
 297 ciInstance* ciEnv::ArrayStoreException_instance() {
 298   if (_ArrayStoreException_instance == NULL) {
 299     _ArrayStoreException_instance
 300           = get_or_create_exception(_ArrayStoreException_handle,
 301           vmSymbols::java_lang_ArrayStoreException());
 302   }
 303   return _ArrayStoreException_instance;
 304 }
 305 ciInstance* ciEnv::ClassCastException_instance() {
 306   if (_ClassCastException_instance == NULL) {
 307     _ClassCastException_instance
 308           = get_or_create_exception(_ClassCastException_handle,
 309           vmSymbols::java_lang_ClassCastException());
 310   }
 311   return _ClassCastException_instance;
 312 }
 313 
 314 ciInstance* ciEnv::the_null_string() {
 315   if (_the_null_string == NULL) {
 316     VM_ENTRY_MARK;
 317     _the_null_string = get_object(Universe::the_null_string())->as_instance();
 318   }
 319   return _the_null_string;
 320 }
 321 
 322 ciInstance* ciEnv::the_min_jint_string() {
 323   if (_the_min_jint_string == NULL) {
 324     VM_ENTRY_MARK;
 325     _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
 326   }
 327   return _the_min_jint_string;
 328 }
 329 
 330 // ------------------------------------------------------------------
 331 // ciEnv::get_method_from_handle
 332 ciMethod* ciEnv::get_method_from_handle(Method* method) {
 333   VM_ENTRY_MARK;
 334   return get_metadata(method)->as_method();
 335 }
 336 
 337 // ------------------------------------------------------------------
 338 // ciEnv::array_element_offset_in_bytes
 339 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
 340   VM_ENTRY_MARK;
 341   objArrayOop a = (objArrayOop)a_h->get_oop();
 342   assert(a->is_objArray(), "");
 343   int length = a->length();
 344   oop o = o_h->get_oop();
 345   for (int i = 0; i < length; i++) {
 346     if (a->obj_at(i) == o)  return i;
 347   }
 348   return -1;
 349 }
 350 
 351 
 352 // ------------------------------------------------------------------
 353 // ciEnv::check_klass_accessiblity
 354 //
 355 // Note: the logic of this method should mirror the logic of
 356 // ConstantPool::verify_constant_pool_resolve.
 357 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
 358                                       Klass* resolved_klass) {
 359   if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
 360     return true;
 361   }
 362   if (accessing_klass->is_obj_array_klass()) {
 363     accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
 364   }
 365   if (!accessing_klass->is_instance_klass()) {
 366     return true;
 367   }
 368 
 369   if (resolved_klass->is_objArray_klass()) {
 370     // Find the element klass, if this is an array.
 371     resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
 372   }
 373   if (resolved_klass->is_instance_klass()) {
 374     return (Reflection::verify_class_access(accessing_klass->get_Klass(),
 375                                             resolved_klass,
 376                                             true) == Reflection::ACCESS_OK);
 377   }
 378   return true;
 379 }
 380 
 381 // ------------------------------------------------------------------
 382 // ciEnv::get_klass_by_name_impl
 383 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
 384                                        const constantPoolHandle& cpool,
 385                                        ciSymbol* name,
 386                                        bool require_local) {
 387   ASSERT_IN_VM;
 388   EXCEPTION_CONTEXT;
 389 
 390   // Now we need to check the SystemDictionary
 391   Symbol* sym = name->get_symbol();
 392   if (sym->byte_at(0) == 'L' &&
 393     sym->byte_at(sym->utf8_length()-1) == ';') {
 394     // This is a name from a signature.  Strip off the trimmings.
 395     // Call recursive to keep scope of strippedsym.
 396     TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
 397                     sym->utf8_length()-2,
 398                     KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
 399     ciSymbol* strippedname = get_symbol(strippedsym);
 400     return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
 401   }
 402 
 403   // Check for prior unloaded klass.  The SystemDictionary's answers
 404   // can vary over time but the compiler needs consistency.
 405   ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
 406   if (unloaded_klass != NULL) {
 407     if (require_local)  return NULL;
 408     return unloaded_klass;
 409   }
 410 
 411   Handle loader(THREAD, (oop)NULL);
 412   Handle domain(THREAD, (oop)NULL);
 413   if (accessing_klass != NULL) {
 414     loader = Handle(THREAD, accessing_klass->loader());
 415     domain = Handle(THREAD, accessing_klass->protection_domain());
 416   }
 417 
 418   // setup up the proper type to return on OOM
 419   ciKlass* fail_type;
 420   if (sym->byte_at(0) == '[') {
 421     fail_type = _unloaded_ciobjarrayklass;
 422   } else {
 423     fail_type = _unloaded_ciinstance_klass;
 424   }
 425   KlassHandle found_klass;
 426   {
 427     ttyUnlocker ttyul;  // release tty lock to avoid ordering problems
 428     MutexLocker ml(Compile_lock);
 429     Klass* kls;
 430     if (!require_local) {
 431       kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
 432                                                                        KILL_COMPILE_ON_FATAL_(fail_type));
 433     } else {
 434       kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
 435                                                            KILL_COMPILE_ON_FATAL_(fail_type));
 436     }
 437     found_klass = KlassHandle(THREAD, kls);
 438   }
 439 
 440   // If we fail to find an array klass, look again for its element type.
 441   // The element type may be available either locally or via constraints.
 442   // In either case, if we can find the element type in the system dictionary,
 443   // we must build an array type around it.  The CI requires array klasses
 444   // to be loaded if their element klasses are loaded, except when memory
 445   // is exhausted.
 446   if (sym->byte_at(0) == '[' &&
 447       (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
 448     // We have an unloaded array.
 449     // Build it on the fly if the element class exists.
 450     TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
 451                                                  sym->utf8_length()-1,
 452                                                  KILL_COMPILE_ON_FATAL_(fail_type));
 453 
 454     // Get element ciKlass recursively.
 455     ciKlass* elem_klass =
 456       get_klass_by_name_impl(accessing_klass,
 457                              cpool,
 458                              get_symbol(elem_sym),
 459                              require_local);
 460     if (elem_klass != NULL && elem_klass->is_loaded()) {
 461       // Now make an array for it
 462       return ciObjArrayKlass::make_impl(elem_klass);
 463     }
 464   }
 465 
 466   if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
 467     // Look inside the constant pool for pre-resolved class entries.
 468     for (int i = cpool->length() - 1; i >= 1; i--) {
 469       if (cpool->tag_at(i).is_klass()) {
 470         Klass* kls = cpool->resolved_klass_at(i);
 471         if (kls->name() == sym) {
 472           found_klass = KlassHandle(THREAD, kls);
 473           break;
 474         }
 475       }
 476     }
 477   }
 478 
 479   if (found_klass() != NULL) {
 480     // Found it.  Build a CI handle.
 481     return get_klass(found_klass());
 482   }
 483 
 484   if (require_local)  return NULL;
 485 
 486   // Not yet loaded into the VM, or not governed by loader constraints.
 487   // Make a CI representative for it.
 488   return get_unloaded_klass(accessing_klass, name);
 489 }
 490 
 491 // ------------------------------------------------------------------
 492 // ciEnv::get_klass_by_name
 493 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
 494                                   ciSymbol* klass_name,
 495                                   bool require_local) {
 496   GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
 497                                                  constantPoolHandle(),
 498                                                  klass_name,
 499                                                  require_local);)
 500 }
 501 
 502 // ------------------------------------------------------------------
 503 // ciEnv::get_klass_by_index_impl
 504 //
 505 // Implementation of get_klass_by_index.
 506 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
 507                                         int index,
 508                                         bool& is_accessible,
 509                                         ciInstanceKlass* accessor) {
 510   EXCEPTION_CONTEXT;
 511   KlassHandle klass; // = NULL;
 512   Symbol* klass_name = NULL;
 513 
 514   if (cpool->tag_at(index).is_symbol()) {
 515     klass_name = cpool->symbol_at(index);
 516   } else {
 517     // Check if it's resolved if it's not a symbol constant pool entry.
 518     klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index));
 519     // Try to look it up by name.
 520   if (klass.is_null()) {
 521       klass_name = cpool->klass_name_at(index);
 522   }
 523   }
 524 
 525   if (klass.is_null()) {
 526     // Not found in constant pool.  Use the name to do the lookup.
 527     ciKlass* k = get_klass_by_name_impl(accessor,
 528                                         cpool,
 529                                         get_symbol(klass_name),
 530                                         false);
 531     // Calculate accessibility the hard way.
 532     if (!k->is_loaded()) {
 533       is_accessible = false;
 534     } else if (k->loader() != accessor->loader() &&
 535                get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
 536       // Loaded only remotely.  Not linked yet.
 537       is_accessible = false;
 538     } else {
 539       // Linked locally, and we must also check public/private, etc.
 540       is_accessible = check_klass_accessibility(accessor, k->get_Klass());
 541     }
 542     return k;
 543   }
 544 
 545   // Check for prior unloaded klass.  The SystemDictionary's answers
 546   // can vary over time but the compiler needs consistency.
 547   ciSymbol* name = get_symbol(klass()->name());
 548   ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
 549   if (unloaded_klass != NULL) {
 550     is_accessible = false;
 551     return unloaded_klass;
 552   }
 553 
 554   // It is known to be accessible, since it was found in the constant pool.
 555   is_accessible = true;
 556   return get_klass(klass());
 557 }
 558 
 559 // ------------------------------------------------------------------
 560 // ciEnv::get_klass_by_index
 561 //
 562 // Get a klass from the constant pool.
 563 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
 564                                    int index,
 565                                    bool& is_accessible,
 566                                    ciInstanceKlass* accessor) {
 567   GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
 568 }
 569 
 570 // ------------------------------------------------------------------
 571 // ciEnv::get_constant_by_index_impl
 572 //
 573 // Implementation of get_constant_by_index().
 574 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
 575                                              int pool_index, int cache_index,
 576                                              ciInstanceKlass* accessor) {
 577   bool ignore_will_link;
 578   EXCEPTION_CONTEXT;
 579   int index = pool_index;
 580   if (cache_index >= 0) {
 581     assert(index < 0, "only one kind of index at a time");
 582     oop obj = cpool->resolved_references()->obj_at(cache_index);
 583     if (obj != NULL) {
 584       ciObject* ciobj = get_object(obj);
 585       if (ciobj->is_array()) {
 586         return ciConstant(T_ARRAY, ciobj);
 587       } else {
 588         assert(ciobj->is_instance(), "should be an instance");
 589         return ciConstant(T_OBJECT, ciobj);
 590       }
 591     }
 592     index = cpool->object_to_cp_index(cache_index);
 593   }
 594   constantTag tag = cpool->tag_at(index);
 595   if (tag.is_int()) {
 596     return ciConstant(T_INT, (jint)cpool->int_at(index));
 597   } else if (tag.is_long()) {
 598     return ciConstant((jlong)cpool->long_at(index));
 599   } else if (tag.is_float()) {
 600     return ciConstant((jfloat)cpool->float_at(index));
 601   } else if (tag.is_double()) {
 602     return ciConstant((jdouble)cpool->double_at(index));
 603   } else if (tag.is_string()) {
 604     oop string = NULL;
 605     assert(cache_index >= 0, "should have a cache index");
 606     if (cpool->is_pseudo_string_at(index)) {
 607       string = cpool->pseudo_string_at(index, cache_index);
 608     } else {
 609       string = cpool->string_at(index, cache_index, THREAD);
 610       if (HAS_PENDING_EXCEPTION) {
 611         CLEAR_PENDING_EXCEPTION;
 612         record_out_of_memory_failure();
 613         return ciConstant();
 614       }
 615     }
 616     ciObject* constant = get_object(string);
 617     if (constant->is_array()) {
 618       return ciConstant(T_ARRAY, constant);
 619     } else {
 620       assert (constant->is_instance(), "must be an instance, or not? ");
 621       return ciConstant(T_OBJECT, constant);
 622     }
 623   } else if (tag.is_klass() || tag.is_unresolved_klass()) {
 624     // 4881222: allow ldc to take a class type
 625     ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
 626     if (HAS_PENDING_EXCEPTION) {
 627       CLEAR_PENDING_EXCEPTION;
 628       record_out_of_memory_failure();
 629       return ciConstant();
 630     }
 631     assert (klass->is_instance_klass() || klass->is_array_klass(),
 632             "must be an instance or array klass ");
 633     return ciConstant(T_OBJECT, klass->java_mirror());
 634   } else if (tag.is_method_type()) {
 635     // must execute Java code to link this CP entry into cache[i].f1
 636     ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
 637     ciObject* ciobj = get_unloaded_method_type_constant(signature);
 638     return ciConstant(T_OBJECT, ciobj);
 639   } else if (tag.is_method_handle()) {
 640     // must execute Java code to link this CP entry into cache[i].f1
 641     int ref_kind        = cpool->method_handle_ref_kind_at(index);
 642     int callee_index    = cpool->method_handle_klass_index_at(index);
 643     ciKlass* callee     = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
 644     ciSymbol* name      = get_symbol(cpool->method_handle_name_ref_at(index));
 645     ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
 646     ciObject* ciobj     = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
 647     return ciConstant(T_OBJECT, ciobj);
 648   } else {
 649     ShouldNotReachHere();
 650     return ciConstant();
 651   }
 652 }
 653 
 654 // ------------------------------------------------------------------
 655 // ciEnv::get_constant_by_index
 656 //
 657 // Pull a constant out of the constant pool.  How appropriate.
 658 //
 659 // Implementation note: this query is currently in no way cached.
 660 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
 661                                         int pool_index, int cache_index,
 662                                         ciInstanceKlass* accessor) {
 663   GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
 664 }
 665 
 666 // ------------------------------------------------------------------
 667 // ciEnv::get_field_by_index_impl
 668 //
 669 // Implementation of get_field_by_index.
 670 //
 671 // Implementation note: the results of field lookups are cached
 672 // in the accessor klass.
 673 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
 674                                         int index) {
 675   ciConstantPoolCache* cache = accessor->field_cache();
 676   if (cache == NULL) {
 677     ciField* field = new (arena()) ciField(accessor, index);
 678     return field;
 679   } else {
 680     ciField* field = (ciField*)cache->get(index);
 681     if (field == NULL) {
 682       field = new (arena()) ciField(accessor, index);
 683       cache->insert(index, field);
 684     }
 685     return field;
 686   }
 687 }
 688 
 689 // ------------------------------------------------------------------
 690 // ciEnv::get_field_by_index
 691 //
 692 // Get a field by index from a klass's constant pool.
 693 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
 694                                    int index) {
 695   GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
 696 }
 697 
 698 // ------------------------------------------------------------------
 699 // ciEnv::lookup_method
 700 //
 701 // Perform an appropriate method lookup based on accessor, holder,
 702 // name, signature, and bytecode.
 703 Method* ciEnv::lookup_method(InstanceKlass*  accessor,
 704                                InstanceKlass*  holder,
 705                                Symbol*       name,
 706                                Symbol*       sig,
 707                                Bytecodes::Code bc) {
 708   EXCEPTION_CONTEXT;
 709   KlassHandle h_accessor(THREAD, accessor);
 710   KlassHandle h_holder(THREAD, holder);
 711   LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL));
 712   methodHandle dest_method;
 713   LinkInfo link_info(h_holder, name, sig, h_accessor, /*check_access*/true);
 714   switch (bc) {
 715   case Bytecodes::_invokestatic:
 716     dest_method =
 717       LinkResolver::resolve_static_call_or_null(link_info);
 718     break;
 719   case Bytecodes::_invokespecial:
 720     dest_method =
 721       LinkResolver::resolve_special_call_or_null(link_info);
 722     break;
 723   case Bytecodes::_invokeinterface:
 724     dest_method =
 725       LinkResolver::linktime_resolve_interface_method_or_null(link_info);
 726     break;
 727   case Bytecodes::_invokevirtual:
 728     dest_method =
 729       LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
 730     break;
 731   default: ShouldNotReachHere();
 732   }
 733 
 734   return dest_method();
 735 }
 736 
 737 
 738 // ------------------------------------------------------------------
 739 // ciEnv::get_method_by_index_impl
 740 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
 741                                           int index, Bytecodes::Code bc,
 742                                           ciInstanceKlass* accessor) {
 743   if (bc == Bytecodes::_invokedynamic) {
 744     ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
 745     bool is_resolved = !cpce->is_f1_null();
 746     // FIXME: code generation could allow for null (unlinked) call site
 747     // The call site could be made patchable as follows:
 748     // Load the appendix argument from the constant pool.
 749     // Test the appendix argument and jump to a known deopt routine if it is null.
 750     // Jump through a patchable call site, which is initially a deopt routine.
 751     // Patch the call site to the nmethod entry point of the static compiled lambda form.
 752     // As with other two-component call sites, both values must be independently verified.
 753 
 754     if (is_resolved) {
 755       // Get the invoker Method* from the constant pool.
 756       // (The appendix argument, if any, will be noted in the method's signature.)
 757       Method* adapter = cpce->f1_as_method();
 758       return get_method(adapter);
 759     }
 760 
 761     // Fake a method that is equivalent to a declared method.
 762     ciInstanceKlass* holder    = get_instance_klass(SystemDictionary::MethodHandle_klass());
 763     ciSymbol*        name      = ciSymbol::invokeBasic_name();
 764     ciSymbol*        signature = get_symbol(cpool->signature_ref_at(index));
 765     return get_unloaded_method(holder, name, signature, accessor);
 766   } else {
 767     const int holder_index = cpool->klass_ref_index_at(index);
 768     bool holder_is_accessible;
 769     ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
 770     ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder);
 771 
 772     // Get the method's name and signature.
 773     Symbol* name_sym = cpool->name_ref_at(index);
 774     Symbol* sig_sym  = cpool->signature_ref_at(index);
 775 
 776     if (cpool->has_preresolution()
 777         || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
 778             MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
 779       // Short-circuit lookups for JSR 292-related call sites.
 780       // That is, do not rely only on name-based lookups, because they may fail
 781       // if the names are not resolvable in the boot class loader (7056328).
 782       switch (bc) {
 783       case Bytecodes::_invokevirtual:
 784       case Bytecodes::_invokeinterface:
 785       case Bytecodes::_invokespecial:
 786       case Bytecodes::_invokestatic:
 787         {
 788           Method* m = ConstantPool::method_at_if_loaded(cpool, index);
 789           if (m != NULL) {
 790             return get_method(m);
 791           }
 792         }
 793         break;
 794       }
 795     }
 796 
 797     if (holder_is_accessible) {  // Our declared holder is loaded.
 798       InstanceKlass* lookup = declared_holder->get_instanceKlass();
 799       Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc);
 800       if (m != NULL &&
 801           (bc == Bytecodes::_invokestatic
 802            ?  m->method_holder()->is_not_initialized()
 803            : !m->method_holder()->is_loaded())) {
 804         m = NULL;
 805       }
 806 #ifdef ASSERT
 807       if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
 808         m = NULL;
 809       }
 810 #endif
 811       if (m != NULL) {
 812         // We found the method.
 813         return get_method(m);
 814       }
 815     }
 816 
 817     // Either the declared holder was not loaded, or the method could
 818     // not be found.  Create a dummy ciMethod to represent the failed
 819     // lookup.
 820     ciSymbol* name      = get_symbol(name_sym);
 821     ciSymbol* signature = get_symbol(sig_sym);
 822     return get_unloaded_method(declared_holder, name, signature, accessor);
 823   }
 824 }
 825 
 826 
 827 // ------------------------------------------------------------------
 828 // ciEnv::get_instance_klass_for_declared_method_holder
 829 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
 830   // For the case of <array>.clone(), the method holder can be a ciArrayKlass
 831   // instead of a ciInstanceKlass.  For that case simply pretend that the
 832   // declared holder is Object.clone since that's where the call will bottom out.
 833   // A more correct fix would trickle out through many interfaces in CI,
 834   // requiring ciInstanceKlass* to become ciKlass* and many more places would
 835   // require checks to make sure the expected type was found.  Given that this
 836   // only occurs for clone() the more extensive fix seems like overkill so
 837   // instead we simply smear the array type into Object.
 838   guarantee(method_holder != NULL, "no method holder");
 839   if (method_holder->is_instance_klass()) {
 840     return method_holder->as_instance_klass();
 841   } else if (method_holder->is_array_klass()) {
 842     return current()->Object_klass();
 843   } else {
 844     ShouldNotReachHere();
 845   }
 846   return NULL;
 847 }
 848 
 849 
 850 // ------------------------------------------------------------------
 851 // ciEnv::get_method_by_index
 852 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
 853                                      int index, Bytecodes::Code bc,
 854                                      ciInstanceKlass* accessor) {
 855   GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
 856 }
 857 
 858 
 859 // ------------------------------------------------------------------
 860 // ciEnv::name_buffer
 861 char *ciEnv::name_buffer(int req_len) {
 862   if (_name_buffer_len < req_len) {
 863     if (_name_buffer == NULL) {
 864       _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
 865       _name_buffer_len = req_len;
 866     } else {
 867       _name_buffer =
 868         (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
 869       _name_buffer_len = req_len;
 870     }
 871   }
 872   return _name_buffer;
 873 }
 874 
 875 // ------------------------------------------------------------------
 876 // ciEnv::is_in_vm
 877 bool ciEnv::is_in_vm() {
 878   return JavaThread::current()->thread_state() == _thread_in_vm;
 879 }
 880 
 881 bool ciEnv::system_dictionary_modification_counter_changed() {
 882   return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
 883 }
 884 
 885 // ------------------------------------------------------------------
 886 // ciEnv::validate_compile_task_dependencies
 887 //
 888 // Check for changes during compilation (e.g. class loads, evolution,
 889 // breakpoints, call site invalidation).
 890 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
 891   if (failing())  return;  // no need for further checks
 892 
 893   // First, check non-klass dependencies as we might return early and
 894   // not check klass dependencies if the system dictionary
 895   // modification counter hasn't changed (see below).
 896   for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
 897     if (deps.is_klass_type())  continue;  // skip klass dependencies
 898     Klass* witness = deps.check_dependency();
 899     if (witness != NULL) {
 900       record_failure("invalid non-klass dependency");
 901       return;
 902     }
 903   }
 904 
 905   // Klass dependencies must be checked when the system dictionary
 906   // changes.  If logging is enabled all violated dependences will be
 907   // recorded in the log.  In debug mode check dependencies even if
 908   // the system dictionary hasn't changed to verify that no invalid
 909   // dependencies were inserted.  Any violated dependences in this
 910   // case are dumped to the tty.
 911   bool counter_changed = system_dictionary_modification_counter_changed();
 912 
 913   bool verify_deps = trueInDebug;
 914   if (!counter_changed && !verify_deps)  return;
 915 
 916   int klass_violations = 0;
 917   for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
 918     if (!deps.is_klass_type())  continue;  // skip non-klass dependencies
 919     Klass* witness = deps.check_dependency();
 920     if (witness != NULL) {
 921       klass_violations++;
 922       if (!counter_changed) {
 923         // Dependence failed but counter didn't change.  Log a message
 924         // describing what failed and allow the assert at the end to
 925         // trigger.
 926         deps.print_dependency(witness);
 927       } else if (xtty == NULL) {
 928         // If we're not logging then a single violation is sufficient,
 929         // otherwise we want to log all the dependences which were
 930         // violated.
 931         break;
 932       }
 933     }
 934   }
 935 
 936   if (klass_violations != 0) {
 937 #ifdef ASSERT
 938     if (!counter_changed && !PrintCompilation) {
 939       // Print out the compile task that failed
 940       _task->print_tty();
 941     }
 942 #endif
 943     assert(counter_changed, "failed dependencies, but counter didn't change");
 944     record_failure("concurrent class loading");
 945   }
 946 }
 947 
 948 // ------------------------------------------------------------------
 949 // ciEnv::register_method
 950 void ciEnv::register_method(ciMethod* target,
 951                             int entry_bci,
 952                             CodeOffsets* offsets,
 953                             int orig_pc_offset,
 954                             CodeBuffer* code_buffer,
 955                             int frame_words,
 956                             OopMapSet* oop_map_set,
 957                             ExceptionHandlerTable* handler_table,
 958                             ImplicitExceptionTable* inc_table,
 959                             AbstractCompiler* compiler,
 960                             bool has_unsafe_access,
 961                             bool has_wide_vectors,
 962                             RTMState  rtm_state) {
 963   VM_ENTRY_MARK;
 964   nmethod* nm = NULL;
 965   {
 966     // To prevent compile queue updates.
 967     MutexLocker locker(MethodCompileQueue_lock, THREAD);
 968 
 969     // Prevent SystemDictionary::add_to_hierarchy from running
 970     // and invalidating our dependencies until we install this method.
 971     // No safepoints are allowed. Otherwise, class redefinition can occur in between.
 972     MutexLocker ml(Compile_lock);
 973     NoSafepointVerifier nsv;
 974 
 975     // Change in Jvmti state may invalidate compilation.
 976     if (!failing() && jvmti_state_changed()) {
 977       record_failure("Jvmti state change invalidated dependencies");
 978     }
 979 
 980     // Change in DTrace flags may invalidate compilation.
 981     if (!failing() &&
 982         ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
 983           (!dtrace_method_probes() && DTraceMethodProbes) ||
 984           (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
 985       record_failure("DTrace flags change invalidated dependencies");
 986     }
 987 
 988     if (!failing()) {
 989       if (log() != NULL) {
 990         // Log the dependencies which this compilation declares.
 991         dependencies()->log_all_dependencies();
 992       }
 993 
 994       // Encode the dependencies now, so we can check them right away.
 995       dependencies()->encode_content_bytes();
 996 
 997       // Check for {class loads, evolution, breakpoints, ...} during compilation
 998       validate_compile_task_dependencies(target);
 999     }
1000 
1001     methodHandle method(THREAD, target->get_Method());
1002 
1003 #if INCLUDE_RTM_OPT
1004     if (!failing() && (rtm_state != NoRTM) &&
1005         (method()->method_data() != NULL) &&
1006         (method()->method_data()->rtm_state() != rtm_state)) {
1007       // Preemptive decompile if rtm state was changed.
1008       record_failure("RTM state change invalidated rtm code");
1009     }
1010 #endif
1011 
1012     if (failing()) {
1013       // While not a true deoptimization, it is a preemptive decompile.
1014       MethodData* mdo = method()->method_data();
1015       if (mdo != NULL) {
1016         mdo->inc_decompile_count();
1017       }
1018 
1019       // All buffers in the CodeBuffer are allocated in the CodeCache.
1020       // If the code buffer is created on each compile attempt
1021       // as in C2, then it must be freed.
1022       code_buffer->free_blob();
1023       return;
1024     }
1025 
1026     assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1027     assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1028 
1029     nm =  nmethod::new_nmethod(method,
1030                                compile_id(),
1031                                entry_bci,
1032                                offsets,
1033                                orig_pc_offset,
1034                                debug_info(), dependencies(), code_buffer,
1035                                frame_words, oop_map_set,
1036                                handler_table, inc_table,
1037                                compiler, task()->comp_level());
1038 
1039     // Free codeBlobs
1040     code_buffer->free_blob();
1041 
1042     if (nm != NULL) {
1043       nm->set_has_unsafe_access(has_unsafe_access);
1044       nm->set_has_wide_vectors(has_wide_vectors);
1045 #if INCLUDE_RTM_OPT
1046       nm->set_rtm_state(rtm_state);
1047 #endif
1048 
1049       // Record successful registration.
1050       // (Put nm into the task handle *before* publishing to the Java heap.)
1051       if (task() != NULL) {
1052         task()->set_code(nm);
1053       }
1054 
1055       if (entry_bci == InvocationEntryBci) {
1056         if (TieredCompilation) {
1057           // If there is an old version we're done with it
1058           CompiledMethod* old = method->code();
1059           if (TraceMethodReplacement && old != NULL) {
1060             ResourceMark rm;
1061             char *method_name = method->name_and_sig_as_C_string();
1062             tty->print_cr("Replacing method %s", method_name);
1063           }
1064           if (old != NULL) {
1065             old->make_not_used();
1066           }
1067         }
1068         if (TraceNMethodInstalls) {
1069           ResourceMark rm;
1070           char *method_name = method->name_and_sig_as_C_string();
1071           ttyLocker ttyl;
1072           tty->print_cr("Installing method (%d) %s ",
1073                         task()->comp_level(),
1074                         method_name);
1075         }
1076         // Allow the code to be executed
1077         method->set_code(method, nm);
1078       } else {
1079         if (TraceNMethodInstalls) {
1080           ResourceMark rm;
1081           char *method_name = method->name_and_sig_as_C_string();
1082           ttyLocker ttyl;
1083           tty->print_cr("Installing osr method (%d) %s @ %d",
1084                         task()->comp_level(),
1085                         method_name,
1086                         entry_bci);
1087         }
1088         method->method_holder()->add_osr_nmethod(nm);
1089       }
1090     }
1091   }  // safepoints are allowed again
1092 
1093   if (nm != NULL) {
1094     // JVMTI -- compiled method notification (must be done outside lock)
1095     nm->post_compiled_method_load_event();
1096   } else {
1097     // The CodeCache is full.
1098     record_failure("code cache is full");
1099   }
1100 }
1101 
1102 
1103 // ------------------------------------------------------------------
1104 // ciEnv::find_system_klass
1105 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1106   VM_ENTRY_MARK;
1107   return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1108 }
1109 
1110 // ------------------------------------------------------------------
1111 // ciEnv::comp_level
1112 int ciEnv::comp_level() {
1113   if (task() == NULL)  return CompLevel_highest_tier;
1114   return task()->comp_level();
1115 }
1116 
1117 // ------------------------------------------------------------------
1118 // ciEnv::compile_id
1119 uint ciEnv::compile_id() {
1120   if (task() == NULL)  return 0;
1121   return task()->compile_id();
1122 }
1123 
1124 // ------------------------------------------------------------------
1125 // ciEnv::notice_inlined_method()
1126 void ciEnv::notice_inlined_method(ciMethod* method) {
1127   _num_inlined_bytecodes += method->code_size_for_inlining();
1128 }
1129 
1130 // ------------------------------------------------------------------
1131 // ciEnv::num_inlined_bytecodes()
1132 int ciEnv::num_inlined_bytecodes() const {
1133   return _num_inlined_bytecodes;
1134 }
1135 
1136 // ------------------------------------------------------------------
1137 // ciEnv::record_failure()
1138 void ciEnv::record_failure(const char* reason) {
1139   if (_failure_reason == NULL) {
1140     // Record the first failure reason.
1141     _failure_reason = reason;
1142   }
1143 }
1144 
1145 void ciEnv::report_failure(const char* reason) {
1146   // Create and fire JFR event
1147   EventCompilerFailure event;
1148   if (event.should_commit()) {
1149     event.set_compileID(compile_id());
1150     event.set_failure(reason);
1151     event.commit();
1152   }
1153 }
1154 
1155 // ------------------------------------------------------------------
1156 // ciEnv::record_method_not_compilable()
1157 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1158   int new_compilable =
1159     all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1160 
1161   // Only note transitions to a worse state
1162   if (new_compilable > _compilable) {
1163     if (log() != NULL) {
1164       if (all_tiers) {
1165         log()->elem("method_not_compilable");
1166       } else {
1167         log()->elem("method_not_compilable_at_tier level='%d'",
1168                     current()->task()->comp_level());
1169       }
1170     }
1171     _compilable = new_compilable;
1172 
1173     // Reset failure reason; this one is more important.
1174     _failure_reason = NULL;
1175     record_failure(reason);
1176   }
1177 }
1178 
1179 // ------------------------------------------------------------------
1180 // ciEnv::record_out_of_memory_failure()
1181 void ciEnv::record_out_of_memory_failure() {
1182   // If memory is low, we stop compiling methods.
1183   record_method_not_compilable("out of memory");
1184 }
1185 
1186 ciInstance* ciEnv::unloaded_ciinstance() {
1187   GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1188 }
1189 
1190 // ------------------------------------------------------------------
1191 // ciEnv::dump_replay_data*
1192 
1193 // Don't change thread state and acquire any locks.
1194 // Safe to call from VM error reporter.
1195 
1196 void ciEnv::dump_compile_data(outputStream* out) {
1197   CompileTask* task = this->task();
1198   Method* method = task->method();
1199   int entry_bci = task->osr_bci();
1200   int comp_level = task->comp_level();
1201   out->print("compile %s %s %s %d %d",
1202                 method->klass_name()->as_quoted_ascii(),
1203                 method->name()->as_quoted_ascii(),
1204                 method->signature()->as_quoted_ascii(),
1205                 entry_bci, comp_level);
1206   if (compiler_data() != NULL) {
1207     if (is_c2_compile(comp_level)) { // C2 or Shark
1208 #ifdef COMPILER2
1209       // Dump C2 inlining data.
1210       ((Compile*)compiler_data())->dump_inline_data(out);
1211 #endif
1212     } else if (is_c1_compile(comp_level)) { // C1
1213 #ifdef COMPILER1
1214       // Dump C1 inlining data.
1215       ((Compilation*)compiler_data())->dump_inline_data(out);
1216 #endif
1217     }
1218   }
1219   out->cr();
1220 }
1221 
1222 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1223   ResourceMark rm;
1224 #if INCLUDE_JVMTI
1225   out->print_cr("JvmtiExport can_access_local_variables %d",     _jvmti_can_access_local_variables);
1226   out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1227   out->print_cr("JvmtiExport can_post_on_exceptions %d",         _jvmti_can_post_on_exceptions);
1228 #endif // INCLUDE_JVMTI
1229 
1230   GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1231   out->print_cr("# %d ciObject found", objects->length());
1232   for (int i = 0; i < objects->length(); i++) {
1233     objects->at(i)->dump_replay_data(out);
1234   }
1235   dump_compile_data(out);
1236   out->flush();
1237 }
1238 
1239 void ciEnv::dump_replay_data(outputStream* out) {
1240   GUARDED_VM_ENTRY(
1241     MutexLocker ml(Compile_lock);
1242     dump_replay_data_unsafe(out);
1243   )
1244 }
1245 
1246 void ciEnv::dump_replay_data(int compile_id) {
1247   static char buffer[O_BUFLEN];
1248   int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1249   if (ret > 0) {
1250     int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1251     if (fd != -1) {
1252       FILE* replay_data_file = os::open(fd, "w");
1253       if (replay_data_file != NULL) {
1254         fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1255         dump_replay_data(&replay_data_stream);
1256         tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1257       } else {
1258         tty->print_cr("# Can't open file to dump replay data.");
1259       }
1260     }
1261   }
1262 }
1263 
1264 void ciEnv::dump_inline_data(int compile_id) {
1265   static char buffer[O_BUFLEN];
1266   int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1267   if (ret > 0) {
1268     int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1269     if (fd != -1) {
1270       FILE* inline_data_file = os::open(fd, "w");
1271       if (inline_data_file != NULL) {
1272         fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1273         GUARDED_VM_ENTRY(
1274           MutexLocker ml(Compile_lock);
1275           dump_compile_data(&replay_data_stream);
1276         )
1277         replay_data_stream.flush();
1278         tty->print("# Compiler inline data is saved as: ");
1279         tty->print_cr("%s", buffer);
1280       } else {
1281         tty->print_cr("# Can't open file to dump inline data.");
1282       }
1283     }
1284   }
1285 }
--- EOF ---