rev 6793 : 8054889: Compiler team's implementation task
Summary: Adding three new diagnostic commands for compiler
Reviewed-by:

   1 /*
   2  * Copyright (c) 1999, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "ci/ciConstant.hpp"
  27 #include "ci/ciEnv.hpp"
  28 #include "ci/ciField.hpp"
  29 #include "ci/ciInstance.hpp"
  30 #include "ci/ciInstanceKlass.hpp"
  31 #include "ci/ciMethod.hpp"
  32 #include "ci/ciNullObject.hpp"
  33 #include "ci/ciReplay.hpp"
  34 #include "ci/ciUtilities.hpp"
  35 #include "classfile/systemDictionary.hpp"
  36 #include "classfile/vmSymbols.hpp"
  37 #include "code/scopeDesc.hpp"
  38 #include "compiler/compileBroker.hpp"
  39 #include "compiler/compileLog.hpp"
  40 #include "compiler/compilerOracle.hpp"
  41 #include "gc_interface/collectedHeap.inline.hpp"
  42 #include "interpreter/linkResolver.hpp"
  43 #include "memory/allocation.inline.hpp"
  44 #include "memory/oopFactory.hpp"
  45 #include "memory/universe.inline.hpp"
  46 #include "oops/methodData.hpp"
  47 #include "oops/objArrayKlass.hpp"
  48 #include "oops/oop.inline.hpp"
  49 #include "oops/oop.inline2.hpp"
  50 #include "prims/jvmtiExport.hpp"
  51 #include "runtime/init.hpp"
  52 #include "runtime/reflection.hpp"
  53 #include "runtime/sharedRuntime.hpp"
  54 #include "runtime/thread.inline.hpp"
  55 #include "utilities/dtrace.hpp"
  56 #include "utilities/macros.hpp"
  57 #ifdef COMPILER1
  58 #include "c1/c1_Runtime1.hpp"
  59 #endif
  60 #ifdef COMPILER2
  61 #include "opto/runtime.hpp"
  62 #endif
  63 
  64 // ciEnv
  65 //
  66 // This class is the top level broker for requests from the compiler
  67 // to the VM.
  68 
  69 ciObject*              ciEnv::_null_object_instance;
  70 
  71 #define WK_KLASS_DEFN(name, ignore_s, ignore_o) ciInstanceKlass* ciEnv::_##name = NULL;
  72 WK_KLASSES_DO(WK_KLASS_DEFN)
  73 #undef WK_KLASS_DEFN
  74 
  75 ciSymbol*        ciEnv::_unloaded_cisymbol = NULL;
  76 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = NULL;
  77 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = NULL;
  78 
  79 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = NULL;
  80 jobject ciEnv::_ArrayStoreException_handle = NULL;
  81 jobject ciEnv::_ClassCastException_handle = NULL;
  82 
  83 #ifndef PRODUCT
  84 static bool firstEnv = true;
  85 #endif /* PRODUCT */
  86 
  87 // ------------------------------------------------------------------
  88 // ciEnv::ciEnv
  89 ciEnv::ciEnv(CompileTask* task, int system_dictionary_modification_counter) {
  90   VM_ENTRY_MARK;
  91 
  92   // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
  93   thread->set_env(this);
  94   assert(ciEnv::current() == this, "sanity");
  95 
  96   _oop_recorder = NULL;
  97   _debug_info = NULL;
  98   _dependencies = NULL;
  99   _failure_reason = NULL;
 100   _compilable = MethodCompilable;
 101   _break_at_compile = false;
 102   _compiler_data = NULL;
 103 #ifndef PRODUCT
 104   assert(!firstEnv, "not initialized properly");
 105 #endif /* !PRODUCT */
 106 
 107   _system_dictionary_modification_counter = system_dictionary_modification_counter;
 108   _num_inlined_bytecodes = 0;
 109   assert(task == NULL || thread->task() == task, "sanity");
 110   _task = task;
 111   _log = NULL;
 112 
 113   // Temporary buffer for creating symbols and such.
 114   _name_buffer = NULL;
 115   _name_buffer_len = 0;
 116 
 117   _arena   = &_ciEnv_arena;
 118   _factory = new (_arena) ciObjectFactory(_arena, 128);
 119 
 120   // Preload commonly referenced system ciObjects.
 121 
 122   // During VM initialization, these instances have not yet been created.
 123   // Assertions ensure that these instances are not accessed before
 124   // their initialization.
 125 
 126   assert(Universe::is_fully_initialized(), "should be complete");
 127 
 128   oop o = Universe::null_ptr_exception_instance();
 129   assert(o != NULL, "should have been initialized");
 130   _NullPointerException_instance = get_object(o)->as_instance();
 131   o = Universe::arithmetic_exception_instance();
 132   assert(o != NULL, "should have been initialized");
 133   _ArithmeticException_instance = get_object(o)->as_instance();
 134 
 135   _ArrayIndexOutOfBoundsException_instance = NULL;
 136   _ArrayStoreException_instance = NULL;
 137   _ClassCastException_instance = NULL;
 138   _the_null_string = NULL;
 139   _the_min_jint_string = NULL;
 140 
 141   _jvmti_can_hotswap_or_post_breakpoint = false;
 142   _jvmti_can_access_local_variables = false;
 143   _jvmti_can_post_on_exceptions = false;
 144   _jvmti_can_pop_frame = false;
 145 }
 146 
 147 ciEnv::ciEnv(Arena* arena) {
 148   ASSERT_IN_VM;
 149 
 150   // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
 151   CompilerThread* current_thread = CompilerThread::current();
 152   assert(current_thread->env() == NULL, "must be");
 153   current_thread->set_env(this);
 154   assert(ciEnv::current() == this, "sanity");
 155 
 156   _oop_recorder = NULL;
 157   _debug_info = NULL;
 158   _dependencies = NULL;
 159   _failure_reason = NULL;
 160   _compilable = MethodCompilable_never;
 161   _break_at_compile = false;
 162   _compiler_data = NULL;
 163 #ifndef PRODUCT
 164   assert(firstEnv, "must be first");
 165   firstEnv = false;
 166 #endif /* !PRODUCT */
 167 
 168   _system_dictionary_modification_counter = 0;
 169   _num_inlined_bytecodes = 0;
 170   _task = NULL;
 171   _log = NULL;
 172 
 173   // Temporary buffer for creating symbols and such.
 174   _name_buffer = NULL;
 175   _name_buffer_len = 0;
 176 
 177   _arena   = arena;
 178   _factory = new (_arena) ciObjectFactory(_arena, 128);
 179 
 180   // Preload commonly referenced system ciObjects.
 181 
 182   // During VM initialization, these instances have not yet been created.
 183   // Assertions ensure that these instances are not accessed before
 184   // their initialization.
 185 
 186   assert(Universe::is_fully_initialized(), "must be");
 187 
 188   _NullPointerException_instance = NULL;
 189   _ArithmeticException_instance = NULL;
 190   _ArrayIndexOutOfBoundsException_instance = NULL;
 191   _ArrayStoreException_instance = NULL;
 192   _ClassCastException_instance = NULL;
 193   _the_null_string = NULL;
 194   _the_min_jint_string = NULL;
 195 
 196   _jvmti_can_hotswap_or_post_breakpoint = false;
 197   _jvmti_can_access_local_variables = false;
 198   _jvmti_can_post_on_exceptions = false;
 199   _jvmti_can_pop_frame = false;
 200 }
 201 
 202 ciEnv::~ciEnv() {
 203   CompilerThread* current_thread = CompilerThread::current();
 204   _factory->remove_symbols();
 205   // Need safepoint to clear the env on the thread.  RedefineClasses might
 206   // be reading it.
 207   GUARDED_VM_ENTRY(current_thread->set_env(NULL);)
 208 }
 209 
 210 // ------------------------------------------------------------------
 211 // Cache Jvmti state
 212 void ciEnv::cache_jvmti_state() {
 213   VM_ENTRY_MARK;
 214   // Get Jvmti capabilities under lock to get consistant values.
 215   MutexLocker mu(JvmtiThreadState_lock);
 216   _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
 217   _jvmti_can_access_local_variables     = JvmtiExport::can_access_local_variables();
 218   _jvmti_can_post_on_exceptions         = JvmtiExport::can_post_on_exceptions();
 219   _jvmti_can_pop_frame                  = JvmtiExport::can_pop_frame();
 220 }
 221 
 222 bool ciEnv::should_retain_local_variables() const {
 223   return _jvmti_can_access_local_variables || _jvmti_can_pop_frame;
 224 }
 225 
 226 bool ciEnv::jvmti_state_changed() const {
 227   if (!_jvmti_can_access_local_variables &&
 228       JvmtiExport::can_access_local_variables()) {
 229     return true;
 230   }
 231   if (!_jvmti_can_hotswap_or_post_breakpoint &&
 232       JvmtiExport::can_hotswap_or_post_breakpoint()) {
 233     return true;
 234   }
 235   if (!_jvmti_can_post_on_exceptions &&
 236       JvmtiExport::can_post_on_exceptions()) {
 237     return true;
 238   }
 239   if (!_jvmti_can_pop_frame &&
 240       JvmtiExport::can_pop_frame()) {
 241     return true;
 242   }
 243   return false;
 244 }
 245 
 246 // ------------------------------------------------------------------
 247 // Cache DTrace flags
 248 void ciEnv::cache_dtrace_flags() {
 249   // Need lock?
 250   _dtrace_extended_probes = ExtendedDTraceProbes;
 251   if (_dtrace_extended_probes) {
 252     _dtrace_monitor_probes  = true;
 253     _dtrace_method_probes   = true;
 254     _dtrace_alloc_probes    = true;
 255   } else {
 256     _dtrace_monitor_probes  = DTraceMonitorProbes;
 257     _dtrace_method_probes   = DTraceMethodProbes;
 258     _dtrace_alloc_probes    = DTraceAllocProbes;
 259   }
 260 }
 261 
 262 // ------------------------------------------------------------------
 263 // helper for lazy exception creation
 264 ciInstance* ciEnv::get_or_create_exception(jobject& handle, Symbol* name) {
 265   VM_ENTRY_MARK;
 266   if (handle == NULL) {
 267     // Cf. universe.cpp, creation of Universe::_null_ptr_exception_instance.
 268     Klass* k = SystemDictionary::find(name, Handle(), Handle(), THREAD);
 269     jobject objh = NULL;
 270     if (!HAS_PENDING_EXCEPTION && k != NULL) {
 271       oop obj = InstanceKlass::cast(k)->allocate_instance(THREAD);
 272       if (!HAS_PENDING_EXCEPTION)
 273         objh = JNIHandles::make_global(obj);
 274     }
 275     if (HAS_PENDING_EXCEPTION) {
 276       CLEAR_PENDING_EXCEPTION;
 277     } else {
 278       handle = objh;
 279     }
 280   }
 281   oop obj = JNIHandles::resolve(handle);
 282   return obj == NULL? NULL: get_object(obj)->as_instance();
 283 }
 284 
 285 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
 286   if (_ArrayIndexOutOfBoundsException_instance == NULL) {
 287     _ArrayIndexOutOfBoundsException_instance
 288           = get_or_create_exception(_ArrayIndexOutOfBoundsException_handle,
 289           vmSymbols::java_lang_ArrayIndexOutOfBoundsException());
 290   }
 291   return _ArrayIndexOutOfBoundsException_instance;
 292 }
 293 ciInstance* ciEnv::ArrayStoreException_instance() {
 294   if (_ArrayStoreException_instance == NULL) {
 295     _ArrayStoreException_instance
 296           = get_or_create_exception(_ArrayStoreException_handle,
 297           vmSymbols::java_lang_ArrayStoreException());
 298   }
 299   return _ArrayStoreException_instance;
 300 }
 301 ciInstance* ciEnv::ClassCastException_instance() {
 302   if (_ClassCastException_instance == NULL) {
 303     _ClassCastException_instance
 304           = get_or_create_exception(_ClassCastException_handle,
 305           vmSymbols::java_lang_ClassCastException());
 306   }
 307   return _ClassCastException_instance;
 308 }
 309 
 310 ciInstance* ciEnv::the_null_string() {
 311   if (_the_null_string == NULL) {
 312     VM_ENTRY_MARK;
 313     _the_null_string = get_object(Universe::the_null_string())->as_instance();
 314   }
 315   return _the_null_string;
 316 }
 317 
 318 ciInstance* ciEnv::the_min_jint_string() {
 319   if (_the_min_jint_string == NULL) {
 320     VM_ENTRY_MARK;
 321     _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
 322   }
 323   return _the_min_jint_string;
 324 }
 325 
 326 // ------------------------------------------------------------------
 327 // ciEnv::get_method_from_handle
 328 ciMethod* ciEnv::get_method_from_handle(Method* method) {
 329   VM_ENTRY_MARK;
 330   return get_metadata(method)->as_method();
 331 }
 332 
 333 // ------------------------------------------------------------------
 334 // ciEnv::array_element_offset_in_bytes
 335 int ciEnv::array_element_offset_in_bytes(ciArray* a_h, ciObject* o_h) {
 336   VM_ENTRY_MARK;
 337   objArrayOop a = (objArrayOop)a_h->get_oop();
 338   assert(a->is_objArray(), "");
 339   int length = a->length();
 340   oop o = o_h->get_oop();
 341   for (int i = 0; i < length; i++) {
 342     if (a->obj_at(i) == o)  return i;
 343   }
 344   return -1;
 345 }
 346 
 347 
 348 // ------------------------------------------------------------------
 349 // ciEnv::check_klass_accessiblity
 350 //
 351 // Note: the logic of this method should mirror the logic of
 352 // ConstantPool::verify_constant_pool_resolve.
 353 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
 354                                       Klass* resolved_klass) {
 355   if (accessing_klass == NULL || !accessing_klass->is_loaded()) {
 356     return true;
 357   }
 358   if (accessing_klass->is_obj_array_klass()) {
 359     accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
 360   }
 361   if (!accessing_klass->is_instance_klass()) {
 362     return true;
 363   }
 364 
 365   if (resolved_klass->oop_is_objArray()) {
 366     // Find the element klass, if this is an array.
 367     resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
 368   }
 369   if (resolved_klass->oop_is_instance()) {
 370     return Reflection::verify_class_access(accessing_klass->get_Klass(),
 371                                            resolved_klass,
 372                                            true);
 373   }
 374   return true;
 375 }
 376 
 377 // ------------------------------------------------------------------
 378 // ciEnv::get_klass_by_name_impl
 379 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
 380                                        constantPoolHandle cpool,
 381                                        ciSymbol* name,
 382                                        bool require_local) {
 383   ASSERT_IN_VM;
 384   EXCEPTION_CONTEXT;
 385 
 386   // Now we need to check the SystemDictionary
 387   Symbol* sym = name->get_symbol();
 388   if (sym->byte_at(0) == 'L' &&
 389     sym->byte_at(sym->utf8_length()-1) == ';') {
 390     // This is a name from a signature.  Strip off the trimmings.
 391     // Call recursive to keep scope of strippedsym.
 392     TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
 393                     sym->utf8_length()-2,
 394                     KILL_COMPILE_ON_FATAL_(_unloaded_ciinstance_klass));
 395     ciSymbol* strippedname = get_symbol(strippedsym);
 396     return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
 397   }
 398 
 399   // Check for prior unloaded klass.  The SystemDictionary's answers
 400   // can vary over time but the compiler needs consistency.
 401   ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
 402   if (unloaded_klass != NULL) {
 403     if (require_local)  return NULL;
 404     return unloaded_klass;
 405   }
 406 
 407   Handle loader(THREAD, (oop)NULL);
 408   Handle domain(THREAD, (oop)NULL);
 409   if (accessing_klass != NULL) {
 410     loader = Handle(THREAD, accessing_klass->loader());
 411     domain = Handle(THREAD, accessing_klass->protection_domain());
 412   }
 413 
 414   // setup up the proper type to return on OOM
 415   ciKlass* fail_type;
 416   if (sym->byte_at(0) == '[') {
 417     fail_type = _unloaded_ciobjarrayklass;
 418   } else {
 419     fail_type = _unloaded_ciinstance_klass;
 420   }
 421   KlassHandle found_klass;
 422   {
 423     ttyUnlocker ttyul;  // release tty lock to avoid ordering problems
 424     MutexLocker ml(Compile_lock);
 425     Klass* kls;
 426     if (!require_local) {
 427       kls = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader,
 428                                                                        KILL_COMPILE_ON_FATAL_(fail_type));
 429     } else {
 430       kls = SystemDictionary::find_instance_or_array_klass(sym, loader, domain,
 431                                                            KILL_COMPILE_ON_FATAL_(fail_type));
 432     }
 433     found_klass = KlassHandle(THREAD, kls);
 434   }
 435 
 436   // If we fail to find an array klass, look again for its element type.
 437   // The element type may be available either locally or via constraints.
 438   // In either case, if we can find the element type in the system dictionary,
 439   // we must build an array type around it.  The CI requires array klasses
 440   // to be loaded if their element klasses are loaded, except when memory
 441   // is exhausted.
 442   if (sym->byte_at(0) == '[' &&
 443       (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
 444     // We have an unloaded array.
 445     // Build it on the fly if the element class exists.
 446     TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
 447                                                  sym->utf8_length()-1,
 448                                                  KILL_COMPILE_ON_FATAL_(fail_type));
 449 
 450     // Get element ciKlass recursively.
 451     ciKlass* elem_klass =
 452       get_klass_by_name_impl(accessing_klass,
 453                              cpool,
 454                              get_symbol(elem_sym),
 455                              require_local);
 456     if (elem_klass != NULL && elem_klass->is_loaded()) {
 457       // Now make an array for it
 458       return ciObjArrayKlass::make_impl(elem_klass);
 459     }
 460   }
 461 
 462   if (found_klass() == NULL && !cpool.is_null() && cpool->has_preresolution()) {
 463     // Look inside the constant pool for pre-resolved class entries.
 464     for (int i = cpool->length() - 1; i >= 1; i--) {
 465       if (cpool->tag_at(i).is_klass()) {
 466         Klass* kls = cpool->resolved_klass_at(i);
 467         if (kls->name() == sym) {
 468           found_klass = KlassHandle(THREAD, kls);
 469           break;
 470         }
 471       }
 472     }
 473   }
 474 
 475   if (found_klass() != NULL) {
 476     // Found it.  Build a CI handle.
 477     return get_klass(found_klass());
 478   }
 479 
 480   if (require_local)  return NULL;
 481 
 482   // Not yet loaded into the VM, or not governed by loader constraints.
 483   // Make a CI representative for it.
 484   return get_unloaded_klass(accessing_klass, name);
 485 }
 486 
 487 // ------------------------------------------------------------------
 488 // ciEnv::get_klass_by_name
 489 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
 490                                   ciSymbol* klass_name,
 491                                   bool require_local) {
 492   GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
 493                                                  constantPoolHandle(),
 494                                                  klass_name,
 495                                                  require_local);)
 496 }
 497 
 498 // ------------------------------------------------------------------
 499 // ciEnv::get_klass_by_index_impl
 500 //
 501 // Implementation of get_klass_by_index.
 502 ciKlass* ciEnv::get_klass_by_index_impl(constantPoolHandle cpool,
 503                                         int index,
 504                                         bool& is_accessible,
 505                                         ciInstanceKlass* accessor) {
 506   EXCEPTION_CONTEXT;
 507   KlassHandle klass; // = NULL;
 508   Symbol* klass_name = NULL;
 509 
 510   if (cpool->tag_at(index).is_symbol()) {
 511     klass_name = cpool->symbol_at(index);
 512   } else {
 513     // Check if it's resolved if it's not a symbol constant pool entry.
 514     klass = KlassHandle(THREAD, ConstantPool::klass_at_if_loaded(cpool, index));
 515     // Try to look it up by name.
 516   if (klass.is_null()) {
 517       klass_name = cpool->klass_name_at(index);
 518   }
 519   }
 520 
 521   if (klass.is_null()) {
 522     // Not found in constant pool.  Use the name to do the lookup.
 523     ciKlass* k = get_klass_by_name_impl(accessor,
 524                                         cpool,
 525                                         get_symbol(klass_name),
 526                                         false);
 527     // Calculate accessibility the hard way.
 528     if (!k->is_loaded()) {
 529       is_accessible = false;
 530     } else if (k->loader() != accessor->loader() &&
 531                get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
 532       // Loaded only remotely.  Not linked yet.
 533       is_accessible = false;
 534     } else {
 535       // Linked locally, and we must also check public/private, etc.
 536       is_accessible = check_klass_accessibility(accessor, k->get_Klass());
 537     }
 538     return k;
 539   }
 540 
 541   // Check for prior unloaded klass.  The SystemDictionary's answers
 542   // can vary over time but the compiler needs consistency.
 543   ciSymbol* name = get_symbol(klass()->name());
 544   ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
 545   if (unloaded_klass != NULL) {
 546     is_accessible = false;
 547     return unloaded_klass;
 548   }
 549 
 550   // It is known to be accessible, since it was found in the constant pool.
 551   is_accessible = true;
 552   return get_klass(klass());
 553 }
 554 
 555 // ------------------------------------------------------------------
 556 // ciEnv::get_klass_by_index
 557 //
 558 // Get a klass from the constant pool.
 559 ciKlass* ciEnv::get_klass_by_index(constantPoolHandle cpool,
 560                                    int index,
 561                                    bool& is_accessible,
 562                                    ciInstanceKlass* accessor) {
 563   GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
 564 }
 565 
 566 // ------------------------------------------------------------------
 567 // ciEnv::get_constant_by_index_impl
 568 //
 569 // Implementation of get_constant_by_index().
 570 ciConstant ciEnv::get_constant_by_index_impl(constantPoolHandle cpool,
 571                                              int pool_index, int cache_index,
 572                                              ciInstanceKlass* accessor) {
 573   bool ignore_will_link;
 574   EXCEPTION_CONTEXT;
 575   int index = pool_index;
 576   if (cache_index >= 0) {
 577     assert(index < 0, "only one kind of index at a time");
 578     oop obj = cpool->resolved_references()->obj_at(cache_index);
 579     if (obj != NULL) {
 580       ciObject* ciobj = get_object(obj);
 581       return ciConstant(T_OBJECT, ciobj);
 582     }
 583     index = cpool->object_to_cp_index(cache_index);
 584   }
 585   constantTag tag = cpool->tag_at(index);
 586   if (tag.is_int()) {
 587     return ciConstant(T_INT, (jint)cpool->int_at(index));
 588   } else if (tag.is_long()) {
 589     return ciConstant((jlong)cpool->long_at(index));
 590   } else if (tag.is_float()) {
 591     return ciConstant((jfloat)cpool->float_at(index));
 592   } else if (tag.is_double()) {
 593     return ciConstant((jdouble)cpool->double_at(index));
 594   } else if (tag.is_string()) {
 595     oop string = NULL;
 596     assert(cache_index >= 0, "should have a cache index");
 597     if (cpool->is_pseudo_string_at(index)) {
 598       string = cpool->pseudo_string_at(index, cache_index);
 599     } else {
 600       string = cpool->string_at(index, cache_index, THREAD);
 601       if (HAS_PENDING_EXCEPTION) {
 602         CLEAR_PENDING_EXCEPTION;
 603         record_out_of_memory_failure();
 604         return ciConstant();
 605       }
 606     }
 607     ciObject* constant = get_object(string);
 608     assert (constant->is_instance(), "must be an instance, or not? ");
 609     return ciConstant(T_OBJECT, constant);
 610   } else if (tag.is_klass() || tag.is_unresolved_klass()) {
 611     // 4881222: allow ldc to take a class type
 612     ciKlass* klass = get_klass_by_index_impl(cpool, index, ignore_will_link, accessor);
 613     if (HAS_PENDING_EXCEPTION) {
 614       CLEAR_PENDING_EXCEPTION;
 615       record_out_of_memory_failure();
 616       return ciConstant();
 617     }
 618     assert (klass->is_instance_klass() || klass->is_array_klass(),
 619             "must be an instance or array klass ");
 620     return ciConstant(T_OBJECT, klass->java_mirror());
 621   } else if (tag.is_method_type()) {
 622     // must execute Java code to link this CP entry into cache[i].f1
 623     ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
 624     ciObject* ciobj = get_unloaded_method_type_constant(signature);
 625     return ciConstant(T_OBJECT, ciobj);
 626   } else if (tag.is_method_handle()) {
 627     // must execute Java code to link this CP entry into cache[i].f1
 628     int ref_kind        = cpool->method_handle_ref_kind_at(index);
 629     int callee_index    = cpool->method_handle_klass_index_at(index);
 630     ciKlass* callee     = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
 631     ciSymbol* name      = get_symbol(cpool->method_handle_name_ref_at(index));
 632     ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
 633     ciObject* ciobj     = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
 634     return ciConstant(T_OBJECT, ciobj);
 635   } else {
 636     ShouldNotReachHere();
 637     return ciConstant();
 638   }
 639 }
 640 
 641 // ------------------------------------------------------------------
 642 // ciEnv::get_constant_by_index
 643 //
 644 // Pull a constant out of the constant pool.  How appropriate.
 645 //
 646 // Implementation note: this query is currently in no way cached.
 647 ciConstant ciEnv::get_constant_by_index(constantPoolHandle cpool,
 648                                         int pool_index, int cache_index,
 649                                         ciInstanceKlass* accessor) {
 650   GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
 651 }
 652 
 653 // ------------------------------------------------------------------
 654 // ciEnv::get_field_by_index_impl
 655 //
 656 // Implementation of get_field_by_index.
 657 //
 658 // Implementation note: the results of field lookups are cached
 659 // in the accessor klass.
 660 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
 661                                         int index) {
 662   ciConstantPoolCache* cache = accessor->field_cache();
 663   if (cache == NULL) {
 664     ciField* field = new (arena()) ciField(accessor, index);
 665     return field;
 666   } else {
 667     ciField* field = (ciField*)cache->get(index);
 668     if (field == NULL) {
 669       field = new (arena()) ciField(accessor, index);
 670       cache->insert(index, field);
 671     }
 672     return field;
 673   }
 674 }
 675 
 676 // ------------------------------------------------------------------
 677 // ciEnv::get_field_by_index
 678 //
 679 // Get a field by index from a klass's constant pool.
 680 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
 681                                    int index) {
 682   GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index);)
 683 }
 684 
 685 // ------------------------------------------------------------------
 686 // ciEnv::lookup_method
 687 //
 688 // Perform an appropriate method lookup based on accessor, holder,
 689 // name, signature, and bytecode.
 690 Method* ciEnv::lookup_method(InstanceKlass*  accessor,
 691                                InstanceKlass*  holder,
 692                                Symbol*       name,
 693                                Symbol*       sig,
 694                                Bytecodes::Code bc) {
 695   EXCEPTION_CONTEXT;
 696   KlassHandle h_accessor(THREAD, accessor);
 697   KlassHandle h_holder(THREAD, holder);
 698   LinkResolver::check_klass_accessability(h_accessor, h_holder, KILL_COMPILE_ON_FATAL_(NULL));
 699   methodHandle dest_method;
 700   switch (bc) {
 701   case Bytecodes::_invokestatic:
 702     dest_method =
 703       LinkResolver::resolve_static_call_or_null(h_holder, name, sig, h_accessor);
 704     break;
 705   case Bytecodes::_invokespecial:
 706     dest_method =
 707       LinkResolver::resolve_special_call_or_null(h_holder, name, sig, h_accessor);
 708     break;
 709   case Bytecodes::_invokeinterface:
 710     dest_method =
 711       LinkResolver::linktime_resolve_interface_method_or_null(h_holder, name, sig,
 712                                                               h_accessor, true);
 713     break;
 714   case Bytecodes::_invokevirtual:
 715     dest_method =
 716       LinkResolver::linktime_resolve_virtual_method_or_null(h_holder, name, sig,
 717                                                             h_accessor, true);
 718     break;
 719   default: ShouldNotReachHere();
 720   }
 721 
 722   return dest_method();
 723 }
 724 
 725 
 726 // ------------------------------------------------------------------
 727 // ciEnv::get_method_by_index_impl
 728 ciMethod* ciEnv::get_method_by_index_impl(constantPoolHandle cpool,
 729                                           int index, Bytecodes::Code bc,
 730                                           ciInstanceKlass* accessor) {
 731   if (bc == Bytecodes::_invokedynamic) {
 732     ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
 733     bool is_resolved = !cpce->is_f1_null();
 734     // FIXME: code generation could allow for null (unlinked) call site
 735     // The call site could be made patchable as follows:
 736     // Load the appendix argument from the constant pool.
 737     // Test the appendix argument and jump to a known deopt routine if it is null.
 738     // Jump through a patchable call site, which is initially a deopt routine.
 739     // Patch the call site to the nmethod entry point of the static compiled lambda form.
 740     // As with other two-component call sites, both values must be independently verified.
 741 
 742     if (is_resolved) {
 743       // Get the invoker Method* from the constant pool.
 744       // (The appendix argument, if any, will be noted in the method's signature.)
 745       Method* adapter = cpce->f1_as_method();
 746       return get_method(adapter);
 747     }
 748 
 749     // Fake a method that is equivalent to a declared method.
 750     ciInstanceKlass* holder    = get_instance_klass(SystemDictionary::MethodHandle_klass());
 751     ciSymbol*        name      = ciSymbol::invokeBasic_name();
 752     ciSymbol*        signature = get_symbol(cpool->signature_ref_at(index));
 753     return get_unloaded_method(holder, name, signature, accessor);
 754   } else {
 755     const int holder_index = cpool->klass_ref_index_at(index);
 756     bool holder_is_accessible;
 757     ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
 758     ciInstanceKlass* declared_holder = get_instance_klass_for_declared_method_holder(holder);
 759 
 760     // Get the method's name and signature.
 761     Symbol* name_sym = cpool->name_ref_at(index);
 762     Symbol* sig_sym  = cpool->signature_ref_at(index);
 763 
 764     if (cpool->has_preresolution()
 765         || (holder == ciEnv::MethodHandle_klass() &&
 766             MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
 767       // Short-circuit lookups for JSR 292-related call sites.
 768       // That is, do not rely only on name-based lookups, because they may fail
 769       // if the names are not resolvable in the boot class loader (7056328).
 770       switch (bc) {
 771       case Bytecodes::_invokevirtual:
 772       case Bytecodes::_invokeinterface:
 773       case Bytecodes::_invokespecial:
 774       case Bytecodes::_invokestatic:
 775         {
 776           Method* m = ConstantPool::method_at_if_loaded(cpool, index);
 777           if (m != NULL) {
 778             return get_method(m);
 779           }
 780         }
 781         break;
 782       }
 783     }
 784 
 785     if (holder_is_accessible) {  // Our declared holder is loaded.
 786       InstanceKlass* lookup = declared_holder->get_instanceKlass();
 787       Method* m = lookup_method(accessor->get_instanceKlass(), lookup, name_sym, sig_sym, bc);
 788       if (m != NULL &&
 789           (bc == Bytecodes::_invokestatic
 790            ?  m->method_holder()->is_not_initialized()
 791            : !m->method_holder()->is_loaded())) {
 792         m = NULL;
 793       }
 794 #ifdef ASSERT
 795       if (m != NULL && ReplayCompiles && !ciReplay::is_loaded(m)) {
 796         m = NULL;
 797       }
 798 #endif
 799       if (m != NULL) {
 800         // We found the method.
 801         return get_method(m);
 802       }
 803     }
 804 
 805     // Either the declared holder was not loaded, or the method could
 806     // not be found.  Create a dummy ciMethod to represent the failed
 807     // lookup.
 808     ciSymbol* name      = get_symbol(name_sym);
 809     ciSymbol* signature = get_symbol(sig_sym);
 810     return get_unloaded_method(declared_holder, name, signature, accessor);
 811   }
 812 }
 813 
 814 
 815 // ------------------------------------------------------------------
 816 // ciEnv::get_instance_klass_for_declared_method_holder
 817 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
 818   // For the case of <array>.clone(), the method holder can be a ciArrayKlass
 819   // instead of a ciInstanceKlass.  For that case simply pretend that the
 820   // declared holder is Object.clone since that's where the call will bottom out.
 821   // A more correct fix would trickle out through many interfaces in CI,
 822   // requiring ciInstanceKlass* to become ciKlass* and many more places would
 823   // require checks to make sure the expected type was found.  Given that this
 824   // only occurs for clone() the more extensive fix seems like overkill so
 825   // instead we simply smear the array type into Object.
 826   guarantee(method_holder != NULL, "no method holder");
 827   if (method_holder->is_instance_klass()) {
 828     return method_holder->as_instance_klass();
 829   } else if (method_holder->is_array_klass()) {
 830     return current()->Object_klass();
 831   } else {
 832     ShouldNotReachHere();
 833   }
 834   return NULL;
 835 }
 836 
 837 
 838 // ------------------------------------------------------------------
 839 // ciEnv::get_method_by_index
 840 ciMethod* ciEnv::get_method_by_index(constantPoolHandle cpool,
 841                                      int index, Bytecodes::Code bc,
 842                                      ciInstanceKlass* accessor) {
 843   GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
 844 }
 845 
 846 
 847 // ------------------------------------------------------------------
 848 // ciEnv::name_buffer
 849 char *ciEnv::name_buffer(int req_len) {
 850   if (_name_buffer_len < req_len) {
 851     if (_name_buffer == NULL) {
 852       _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
 853       _name_buffer_len = req_len;
 854     } else {
 855       _name_buffer =
 856         (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
 857       _name_buffer_len = req_len;
 858     }
 859   }
 860   return _name_buffer;
 861 }
 862 
 863 // ------------------------------------------------------------------
 864 // ciEnv::is_in_vm
 865 bool ciEnv::is_in_vm() {
 866   return JavaThread::current()->thread_state() == _thread_in_vm;
 867 }
 868 
 869 bool ciEnv::system_dictionary_modification_counter_changed() {
 870   return _system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
 871 }
 872 
 873 // ------------------------------------------------------------------
 874 // ciEnv::validate_compile_task_dependencies
 875 //
 876 // Check for changes during compilation (e.g. class loads, evolution,
 877 // breakpoints, call site invalidation).
 878 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
 879   if (failing())  return;  // no need for further checks
 880 
 881   // First, check non-klass dependencies as we might return early and
 882   // not check klass dependencies if the system dictionary
 883   // modification counter hasn't changed (see below).
 884   for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
 885     if (deps.is_klass_type())  continue;  // skip klass dependencies
 886     Klass* witness = deps.check_dependency();
 887     if (witness != NULL) {
 888       record_failure("invalid non-klass dependency");
 889       return;
 890     }
 891   }
 892 
 893   // Klass dependencies must be checked when the system dictionary
 894   // changes.  If logging is enabled all violated dependences will be
 895   // recorded in the log.  In debug mode check dependencies even if
 896   // the system dictionary hasn't changed to verify that no invalid
 897   // dependencies were inserted.  Any violated dependences in this
 898   // case are dumped to the tty.
 899   bool counter_changed = system_dictionary_modification_counter_changed();
 900 
 901   bool verify_deps = trueInDebug;
 902   if (!counter_changed && !verify_deps)  return;
 903 
 904   int klass_violations = 0;
 905   for (Dependencies::DepStream deps(dependencies()); deps.next(); ) {
 906     if (!deps.is_klass_type())  continue;  // skip non-klass dependencies
 907     Klass* witness = deps.check_dependency();
 908     if (witness != NULL) {
 909       klass_violations++;
 910       if (!counter_changed) {
 911         // Dependence failed but counter didn't change.  Log a message
 912         // describing what failed and allow the assert at the end to
 913         // trigger.
 914         deps.print_dependency(witness);
 915       } else if (xtty == NULL) {
 916         // If we're not logging then a single violation is sufficient,
 917         // otherwise we want to log all the dependences which were
 918         // violated.
 919         break;
 920       }
 921     }
 922   }
 923 
 924   if (klass_violations != 0) {
 925 #ifdef ASSERT
 926     if (!counter_changed && !PrintCompilation) {
 927       // Print out the compile task that failed
 928       _task->print_line();
 929     }
 930 #endif
 931     assert(counter_changed, "failed dependencies, but counter didn't change");
 932     record_failure("concurrent class loading");
 933   }
 934 }
 935 
 936 // ------------------------------------------------------------------
 937 // ciEnv::register_method
 938 void ciEnv::register_method(ciMethod* target,
 939                             int entry_bci,
 940                             CodeOffsets* offsets,
 941                             int orig_pc_offset,
 942                             CodeBuffer* code_buffer,
 943                             int frame_words,
 944                             OopMapSet* oop_map_set,
 945                             ExceptionHandlerTable* handler_table,
 946                             ImplicitExceptionTable* inc_table,
 947                             AbstractCompiler* compiler,
 948                             int comp_level,
 949                             bool has_unsafe_access,
 950                             bool has_wide_vectors,
 951                             RTMState  rtm_state) {
 952   VM_ENTRY_MARK;
 953   nmethod* nm = NULL;
 954   {
 955     // To prevent compile queue updates.
 956     MutexLocker locker(MethodCompileQueue_lock, THREAD);
 957 
 958     // Prevent SystemDictionary::add_to_hierarchy from running
 959     // and invalidating our dependencies until we install this method.
 960     // No safepoints are allowed. Otherwise, class redefinition can occur in between.
 961     MutexLocker ml(Compile_lock);
 962     No_Safepoint_Verifier nsv;
 963 
 964     // Change in Jvmti state may invalidate compilation.
 965     if (!failing() && jvmti_state_changed()) {
 966       record_failure("Jvmti state change invalidated dependencies");
 967     }
 968 
 969     // Change in DTrace flags may invalidate compilation.
 970     if (!failing() &&
 971         ( (!dtrace_extended_probes() && ExtendedDTraceProbes) ||
 972           (!dtrace_method_probes() && DTraceMethodProbes) ||
 973           (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
 974       record_failure("DTrace flags change invalidated dependencies");
 975     }
 976 
 977     if (!failing()) {
 978       if (log() != NULL) {
 979         // Log the dependencies which this compilation declares.
 980         dependencies()->log_all_dependencies();
 981       }
 982 
 983       // Encode the dependencies now, so we can check them right away.
 984       dependencies()->encode_content_bytes();
 985 
 986       // Check for {class loads, evolution, breakpoints, ...} during compilation
 987       validate_compile_task_dependencies(target);
 988     }
 989 
 990     methodHandle method(THREAD, target->get_Method());
 991 
 992 #if INCLUDE_RTM_OPT
 993     if (!failing() && (rtm_state != NoRTM) &&
 994         (method()->method_data() != NULL) &&
 995         (method()->method_data()->rtm_state() != rtm_state)) {
 996       // Preemptive decompile if rtm state was changed.
 997       record_failure("RTM state change invalidated rtm code");
 998     }
 999 #endif
1000 
1001     if (failing()) {
1002       // While not a true deoptimization, it is a preemptive decompile.
1003       MethodData* mdo = method()->method_data();
1004       if (mdo != NULL) {
1005         mdo->inc_decompile_count();
1006       }
1007 
1008       // All buffers in the CodeBuffer are allocated in the CodeCache.
1009       // If the code buffer is created on each compile attempt
1010       // as in C2, then it must be freed.
1011       code_buffer->free_blob();
1012       return;
1013     }
1014 
1015     assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1016     assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1017 
1018     nm =  nmethod::new_nmethod(method,
1019                                compile_id(),
1020                                entry_bci,
1021                                offsets,
1022                                orig_pc_offset,
1023                                debug_info(), dependencies(), code_buffer,
1024                                frame_words, oop_map_set,
1025                                handler_table, inc_table,
1026                                compiler, comp_level);
1027     // Free codeBlobs
1028     code_buffer->free_blob();
1029 
1030     if (nm != NULL) {
1031       nm->set_has_unsafe_access(has_unsafe_access);
1032       nm->set_has_wide_vectors(has_wide_vectors);
1033 #if INCLUDE_RTM_OPT
1034       nm->set_rtm_state(rtm_state);
1035 #endif
1036 
1037       // Record successful registration.
1038       // (Put nm into the task handle *before* publishing to the Java heap.)
1039       if (task() != NULL) {
1040         task()->set_code(nm);
1041       }
1042 
1043       if (entry_bci == InvocationEntryBci) {
1044         if (TieredCompilation) {
1045           // If there is an old version we're done with it
1046           nmethod* old = method->code();
1047           if (TraceMethodReplacement && old != NULL) {
1048             ResourceMark rm;
1049             char *method_name = method->name_and_sig_as_C_string();
1050             tty->print_cr("Replacing method %s", method_name);
1051           }
1052           if (old != NULL) {
1053             old->make_not_entrant();
1054           }
1055         }
1056         if (TraceNMethodInstalls) {
1057           ResourceMark rm;
1058           char *method_name = method->name_and_sig_as_C_string();
1059           ttyLocker ttyl;
1060           tty->print_cr("Installing method (%d) %s ",
1061                         comp_level,
1062                         method_name);
1063         }
1064         // Allow the code to be executed
1065         method->set_code(method, nm);
1066       } else {
1067         if (TraceNMethodInstalls) {
1068           ResourceMark rm;
1069           char *method_name = method->name_and_sig_as_C_string();
1070           ttyLocker ttyl;
1071           tty->print_cr("Installing osr method (%d) %s @ %d",
1072                         comp_level,
1073                         method_name,
1074                         entry_bci);
1075         }
1076         method->method_holder()->add_osr_nmethod(nm);
1077       }
1078     }
1079   }  // safepoints are allowed again
1080 
1081   if (nm != NULL) {
1082     // JVMTI -- compiled method notification (must be done outside lock)
1083     nm->post_compiled_method_load_event();
1084   } else {
1085     // The CodeCache is full. Print out warning and disable compilation.
1086     record_failure("code cache is full");
1087     CompileBroker::handle_full_code_cache();
1088   }
1089 }
1090 
1091 
1092 // ------------------------------------------------------------------
1093 // ciEnv::find_system_klass
1094 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1095   VM_ENTRY_MARK;
1096   return get_klass_by_name_impl(NULL, constantPoolHandle(), klass_name, false);
1097 }
1098 
1099 // ------------------------------------------------------------------
1100 // ciEnv::comp_level
1101 int ciEnv::comp_level() {
1102   if (task() == NULL)  return CompLevel_highest_tier;
1103   return task()->comp_level();
1104 }
1105 
1106 // ------------------------------------------------------------------
1107 // ciEnv::compile_id
1108 uint ciEnv::compile_id() {
1109   if (task() == NULL)  return 0;
1110   return task()->compile_id();
1111 }
1112 
1113 // ------------------------------------------------------------------
1114 // ciEnv::notice_inlined_method()
1115 void ciEnv::notice_inlined_method(ciMethod* method) {
1116   _num_inlined_bytecodes += method->code_size_for_inlining();
1117 }
1118 
1119 // ------------------------------------------------------------------
1120 // ciEnv::num_inlined_bytecodes()
1121 int ciEnv::num_inlined_bytecodes() const {
1122   return _num_inlined_bytecodes;
1123 }
1124 
1125 // ------------------------------------------------------------------
1126 // ciEnv::record_failure()
1127 void ciEnv::record_failure(const char* reason) {
1128   if (_failure_reason == NULL) {
1129     // Record the first failure reason.
1130     _failure_reason = reason;
1131   }
1132 }
1133 
1134 // ------------------------------------------------------------------
1135 // ciEnv::record_method_not_compilable()
1136 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1137   int new_compilable =
1138     all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1139 
1140   // Only note transitions to a worse state
1141   if (new_compilable > _compilable) {
1142     if (log() != NULL) {
1143       if (all_tiers) {
1144         log()->elem("method_not_compilable");
1145       } else {
1146         log()->elem("method_not_compilable_at_tier level='%d'",
1147                     current()->task()->comp_level());
1148       }
1149     }
1150     _compilable = new_compilable;
1151 
1152     // Reset failure reason; this one is more important.
1153     _failure_reason = NULL;
1154     record_failure(reason);
1155   }
1156 }
1157 
1158 // ------------------------------------------------------------------
1159 // ciEnv::record_out_of_memory_failure()
1160 void ciEnv::record_out_of_memory_failure() {
1161   // If memory is low, we stop compiling methods.
1162   record_method_not_compilable("out of memory");
1163 }
1164 
1165 ciInstance* ciEnv::unloaded_ciinstance() {
1166   GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1167 }
1168 
1169 // ------------------------------------------------------------------
1170 // ciEnv::dump_replay_data*
1171 
1172 // Don't change thread state and acquire any locks.
1173 // Safe to call from VM error reporter.
1174 
1175 void ciEnv::dump_compile_data(outputStream* out) {
1176   CompileTask* task = this->task();
1177   Method* method = task->method();
1178   int entry_bci = task->osr_bci();
1179   int comp_level = task->comp_level();
1180   out->print("compile %s %s %s %d %d",
1181                 method->klass_name()->as_quoted_ascii(),
1182                 method->name()->as_quoted_ascii(),
1183                 method->signature()->as_quoted_ascii(),
1184                 entry_bci, comp_level);
1185   if (compiler_data() != NULL) {
1186     if (is_c2_compile(comp_level)) { // C2 or Shark
1187 #ifdef COMPILER2
1188       // Dump C2 inlining data.
1189       ((Compile*)compiler_data())->dump_inline_data(out);
1190 #endif
1191     } else if (is_c1_compile(comp_level)) { // C1
1192 #ifdef COMPILER1
1193       // Dump C1 inlining data.
1194       ((Compilation*)compiler_data())->dump_inline_data(out);
1195 #endif
1196     }
1197   }
1198   out->cr();
1199 }
1200 
1201 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1202   ResourceMark rm;
1203 #if INCLUDE_JVMTI
1204   out->print_cr("JvmtiExport can_access_local_variables %d",     _jvmti_can_access_local_variables);
1205   out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1206   out->print_cr("JvmtiExport can_post_on_exceptions %d",         _jvmti_can_post_on_exceptions);
1207 #endif // INCLUDE_JVMTI
1208 
1209   GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1210   out->print_cr("# %d ciObject found", objects->length());
1211   for (int i = 0; i < objects->length(); i++) {
1212     objects->at(i)->dump_replay_data(out);
1213   }
1214   dump_compile_data(out);
1215   out->flush();
1216 }
1217 
1218 void ciEnv::dump_replay_data(outputStream* out) {
1219   GUARDED_VM_ENTRY(
1220     MutexLocker ml(Compile_lock);
1221     dump_replay_data_unsafe(out);
1222   )
1223 }
1224 
1225 void ciEnv::dump_replay_data(int compile_id) {
1226   static char buffer[O_BUFLEN];
1227   int ret = jio_snprintf(buffer, O_BUFLEN, "replay_pid%p_compid%d.log", os::current_process_id(), compile_id);
1228   if (ret > 0) {
1229     int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1230     if (fd != -1) {
1231       FILE* replay_data_file = os::open(fd, "w");
1232       if (replay_data_file != NULL) {
1233         fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1234         dump_replay_data(&replay_data_stream);
1235         tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1236       } else {
1237         tty->print_cr("# Can't open file to dump replay data.");
1238       }
1239     }
1240   }
1241 }
1242 
1243 void ciEnv::dump_inline_data(int compile_id) {
1244   static char buffer[O_BUFLEN];
1245   int ret = jio_snprintf(buffer, O_BUFLEN, "inline_pid%p_compid%d.log", os::current_process_id(), compile_id);
1246   if (ret > 0) {
1247     int fd = open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1248     if (fd != -1) {
1249       FILE* inline_data_file = os::open(fd, "w");
1250       if (inline_data_file != NULL) {
1251         fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1252         GUARDED_VM_ENTRY(
1253           MutexLocker ml(Compile_lock);
1254           dump_compile_data(&replay_data_stream);
1255         )
1256         replay_data_stream.flush();
1257         tty->print("# Compiler inline data is saved as: ");
1258         tty->print_cr("%s", buffer);
1259       } else {
1260         tty->print_cr("# Can't open file to dump inline data.");
1261       }
1262     }
1263   }
1264 }
--- EOF ---