1 /*
   2  * Copyright (c) 1999, 2018, 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 "jvmci/jvmciEnv.hpp"
  27 #include "classfile/javaAssertions.hpp"
  28 #include "classfile/systemDictionary.hpp"
  29 #include "classfile/vmSymbols.hpp"
  30 #include "code/codeCache.hpp"
  31 #include "code/scopeDesc.hpp"
  32 #include "compiler/compileBroker.hpp"
  33 #include "compiler/compileLog.hpp"
  34 #include "compiler/compilerOracle.hpp"
  35 #include "interpreter/linkResolver.hpp"
  36 #include "memory/allocation.inline.hpp"
  37 #include "memory/oopFactory.hpp"
  38 #include "memory/resourceArea.hpp"
  39 #include "memory/universe.hpp"
  40 #include "oops/constantPool.inline.hpp"
  41 #include "oops/cpCache.inline.hpp"
  42 #include "oops/method.inline.hpp"
  43 #include "oops/methodData.hpp"
  44 #include "oops/objArrayKlass.hpp"
  45 #include "oops/oop.inline.hpp"
  46 #include "prims/jvmtiExport.hpp"
  47 #include "runtime/handles.inline.hpp"
  48 #include "runtime/init.hpp"
  49 #include "runtime/reflection.hpp"
  50 #include "runtime/sharedRuntime.hpp"
  51 #include "runtime/sweeper.hpp"
  52 #include "utilities/dtrace.hpp"
  53 #include "jvmci/jvmciRuntime.hpp"
  54 #include "jvmci/jvmciJavaClasses.hpp"
  55 
  56 JVMCIEnv::JVMCIEnv(CompileTask* task, int system_dictionary_modification_counter):
  57   _task(task),
  58   _system_dictionary_modification_counter(system_dictionary_modification_counter),
  59   _failure_reason(NULL),
  60   _retryable(true)
  61 {
  62   // Get Jvmti capabilities under lock to get consistent values.
  63   MutexLocker mu(JvmtiThreadState_lock);
  64   _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
  65   _jvmti_can_access_local_variables     = JvmtiExport::can_access_local_variables();
  66   _jvmti_can_post_on_exceptions         = JvmtiExport::can_post_on_exceptions();
  67 }
  68 
  69 // ------------------------------------------------------------------
  70 // Note: the logic of this method should mirror the logic of
  71 // constantPoolOopDesc::verify_constant_pool_resolve.
  72 bool JVMCIEnv::check_klass_accessibility(Klass* accessing_klass, Klass* resolved_klass) {
  73   if (accessing_klass->is_objArray_klass()) {
  74     accessing_klass = ObjArrayKlass::cast(accessing_klass)->bottom_klass();
  75   }
  76   if (!accessing_klass->is_instance_klass()) {
  77     return true;
  78   }
  79 
  80   if (resolved_klass->is_objArray_klass()) {
  81     // Find the element klass, if this is an array.
  82     resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
  83   }
  84   if (resolved_klass->is_instance_klass()) {
  85     Reflection::VerifyClassAccessResults result =
  86       Reflection::verify_class_access(accessing_klass, InstanceKlass::cast(resolved_klass), true);
  87     return result == Reflection::ACCESS_OK;
  88   }
  89   return true;
  90 }
  91 
  92 // ------------------------------------------------------------------
  93 Klass* JVMCIEnv::get_klass_by_name_impl(Klass* accessing_klass,
  94                                         const constantPoolHandle& cpool,
  95                                         Symbol* sym,
  96                                         bool require_local) {
  97   JVMCI_EXCEPTION_CONTEXT;
  98 
  99   // Now we need to check the SystemDictionary
 100   if (sym->byte_at(0) == 'L' &&
 101     sym->byte_at(sym->utf8_length()-1) == ';') {
 102     // This is a name from a signature.  Strip off the trimmings.
 103     // Call recursive to keep scope of strippedsym.
 104     TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
 105                     sym->utf8_length()-2,
 106                     CHECK_NULL);
 107     return get_klass_by_name_impl(accessing_klass, cpool, strippedsym, require_local);
 108   }
 109 
 110   Handle loader(THREAD, (oop)NULL);
 111   Handle domain(THREAD, (oop)NULL);
 112   if (accessing_klass != NULL) {
 113     loader = Handle(THREAD, accessing_klass->class_loader());
 114     domain = Handle(THREAD, accessing_klass->protection_domain());
 115   }
 116 
 117   Klass* found_klass = NULL;
 118   {
 119     ttyUnlocker ttyul;  // release tty lock to avoid ordering problems
 120     MutexLocker ml(Compile_lock);
 121     if (!require_local) {
 122       found_klass = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, CHECK_NULL);
 123     } else {
 124       found_klass = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, CHECK_NULL);
 125     }
 126   }
 127 
 128   // If we fail to find an array klass, look again for its element type.
 129   // The element type may be available either locally or via constraints.
 130   // In either case, if we can find the element type in the system dictionary,
 131   // we must build an array type around it.  The CI requires array klasses
 132   // to be loaded if their element klasses are loaded, except when memory
 133   // is exhausted.
 134   if (sym->byte_at(0) == '[' &&
 135       (sym->byte_at(1) == '[' || sym->byte_at(1) == 'L')) {
 136     // We have an unloaded array.
 137     // Build it on the fly if the element class exists.
 138     TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
 139                                                  sym->utf8_length()-1,
 140                                                  CHECK_NULL);
 141 
 142     // Get element Klass recursively.
 143     Klass* elem_klass =
 144       get_klass_by_name_impl(accessing_klass,
 145                              cpool,
 146                              elem_sym,
 147                              require_local);
 148     if (elem_klass != NULL) {
 149       // Now make an array for it
 150       return elem_klass->array_klass(CHECK_NULL);
 151     }
 152   }
 153 
 154   if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
 155     // Look inside the constant pool for pre-resolved class entries.
 156     for (int i = cpool->length() - 1; i >= 1; i--) {
 157       if (cpool->tag_at(i).is_klass()) {
 158         Klass*  kls = cpool->resolved_klass_at(i);
 159         if (kls->name() == sym) {
 160           return kls;
 161         }
 162       }
 163     }
 164   }
 165 
 166   return found_klass;
 167 }
 168 
 169 // ------------------------------------------------------------------
 170 Klass* JVMCIEnv::get_klass_by_name(Klass* accessing_klass,
 171                                   Symbol* klass_name,
 172                                   bool require_local) {
 173   ResourceMark rm;
 174   constantPoolHandle cpool;
 175   return get_klass_by_name_impl(accessing_klass,
 176                                 cpool,
 177                                 klass_name,
 178                                 require_local);
 179 }
 180 
 181 // ------------------------------------------------------------------
 182 // Implementation of get_klass_by_index.
 183 Klass* JVMCIEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
 184                                         int index,
 185                                         bool& is_accessible,
 186                                         Klass* accessor) {
 187   JVMCI_EXCEPTION_CONTEXT;
 188   Klass* klass = ConstantPool::klass_at_if_loaded(cpool, index);
 189   Symbol* klass_name = NULL;
 190   if (klass == NULL) {
 191     klass_name = cpool->klass_name_at(index);
 192   }
 193 
 194   if (klass == NULL) {
 195     // Not found in constant pool.  Use the name to do the lookup.
 196     Klass* k = get_klass_by_name_impl(accessor,
 197                                       cpool,
 198                                       klass_name,
 199                                       false);
 200     // Calculate accessibility the hard way.
 201     if (k == NULL) {
 202       is_accessible = false;
 203     } else if (k->class_loader() != accessor->class_loader() &&
 204                get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
 205       // Loaded only remotely.  Not linked yet.
 206       is_accessible = false;
 207     } else {
 208       // Linked locally, and we must also check public/private, etc.
 209       is_accessible = check_klass_accessibility(accessor, k);
 210     }
 211     if (!is_accessible) {
 212       return NULL;
 213     }
 214     return k;
 215   }
 216 
 217   // It is known to be accessible, since it was found in the constant pool.
 218   is_accessible = true;
 219   return klass;
 220 }
 221 
 222 // ------------------------------------------------------------------
 223 // Get a klass from the constant pool.
 224 Klass* JVMCIEnv::get_klass_by_index(const constantPoolHandle& cpool,
 225                                     int index,
 226                                     bool& is_accessible,
 227                                     Klass* accessor) {
 228   ResourceMark rm;
 229   return get_klass_by_index_impl(cpool, index, is_accessible, accessor);
 230 }
 231 
 232 // ------------------------------------------------------------------
 233 // Implementation of get_field_by_index.
 234 //
 235 // Implementation note: the results of field lookups are cached
 236 // in the accessor klass.
 237 void JVMCIEnv::get_field_by_index_impl(InstanceKlass* klass, fieldDescriptor& field_desc,
 238                                         int index) {
 239   JVMCI_EXCEPTION_CONTEXT;
 240 
 241   assert(klass->is_linked(), "must be linked before using its constant-pool");
 242 
 243   constantPoolHandle cpool(thread, klass->constants());
 244 
 245   // Get the field's name, signature, and type.
 246   Symbol* name  = cpool->name_ref_at(index);
 247 
 248   int nt_index = cpool->name_and_type_ref_index_at(index);
 249   int sig_index = cpool->signature_ref_index_at(nt_index);
 250   Symbol* signature = cpool->symbol_at(sig_index);
 251 
 252   // Get the field's declared holder.
 253   int holder_index = cpool->klass_ref_index_at(index);
 254   bool holder_is_accessible;
 255   Klass* declared_holder = get_klass_by_index(cpool, holder_index,
 256                                               holder_is_accessible,
 257                                               klass);
 258 
 259   // The declared holder of this field may not have been loaded.
 260   // Bail out with partial field information.
 261   if (!holder_is_accessible) {
 262     return;
 263   }
 264 
 265 
 266   // Perform the field lookup.
 267   Klass*  canonical_holder =
 268     InstanceKlass::cast(declared_holder)->find_field(name, signature, &field_desc);
 269   if (canonical_holder == NULL) {
 270     return;
 271   }
 272 
 273   assert(canonical_holder == field_desc.field_holder(), "just checking");
 274 }
 275 
 276 // ------------------------------------------------------------------
 277 // Get a field by index from a klass's constant pool.
 278 void JVMCIEnv::get_field_by_index(InstanceKlass* accessor, fieldDescriptor& fd, int index) {
 279   ResourceMark rm;
 280   return get_field_by_index_impl(accessor, fd, index);
 281 }
 282 
 283 // ------------------------------------------------------------------
 284 // Perform an appropriate method lookup based on accessor, holder,
 285 // name, signature, and bytecode.
 286 methodHandle JVMCIEnv::lookup_method(InstanceKlass* accessor,
 287                                Klass*         holder,
 288                                Symbol*        name,
 289                                Symbol*        sig,
 290                                Bytecodes::Code bc,
 291                                constantTag   tag) {
 292   // Accessibility checks are performed in JVMCIEnv::get_method_by_index_impl().
 293   assert(check_klass_accessibility(accessor, holder), "holder not accessible");
 294 
 295   methodHandle dest_method;
 296   LinkInfo link_info(holder, name, sig, accessor, LinkInfo::needs_access_check, tag);
 297   switch (bc) {
 298   case Bytecodes::_invokestatic:
 299     dest_method =
 300       LinkResolver::resolve_static_call_or_null(link_info);
 301     break;
 302   case Bytecodes::_invokespecial:
 303     dest_method =
 304       LinkResolver::resolve_special_call_or_null(link_info);
 305     break;
 306   case Bytecodes::_invokeinterface:
 307     dest_method =
 308       LinkResolver::linktime_resolve_interface_method_or_null(link_info);
 309     break;
 310   case Bytecodes::_invokevirtual:
 311     dest_method =
 312       LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
 313     break;
 314   default: ShouldNotReachHere();
 315   }
 316 
 317   return dest_method;
 318 }
 319 
 320 
 321 // ------------------------------------------------------------------
 322 methodHandle JVMCIEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
 323                                           int index, Bytecodes::Code bc,
 324                                           InstanceKlass* accessor) {
 325   if (bc == Bytecodes::_invokedynamic) {
 326     ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
 327     bool is_resolved = !cpce->is_f1_null();
 328     if (is_resolved) {
 329       // Get the invoker Method* from the constant pool.
 330       // (The appendix argument, if any, will be noted in the method's signature.)
 331       Method* adapter = cpce->f1_as_method();
 332       return methodHandle(adapter);
 333     }
 334 
 335     return NULL;
 336   }
 337 
 338   int holder_index = cpool->klass_ref_index_at(index);
 339   bool holder_is_accessible;
 340   Klass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
 341 
 342   // Get the method's name and signature.
 343   Symbol* name_sym = cpool->name_ref_at(index);
 344   Symbol* sig_sym  = cpool->signature_ref_at(index);
 345 
 346   if (cpool->has_preresolution()
 347       || ((holder == SystemDictionary::MethodHandle_klass() || holder == SystemDictionary::VarHandle_klass()) &&
 348           MethodHandles::is_signature_polymorphic_name(holder, name_sym))) {
 349     // Short-circuit lookups for JSR 292-related call sites.
 350     // That is, do not rely only on name-based lookups, because they may fail
 351     // if the names are not resolvable in the boot class loader (7056328).
 352     switch (bc) {
 353     case Bytecodes::_invokevirtual:
 354     case Bytecodes::_invokeinterface:
 355     case Bytecodes::_invokespecial:
 356     case Bytecodes::_invokestatic:
 357       {
 358         Method* m = ConstantPool::method_at_if_loaded(cpool, index);
 359         if (m != NULL) {
 360           return m;
 361         }
 362       }
 363       break;
 364     default:
 365       break;
 366     }
 367   }
 368 
 369   if (holder_is_accessible) { // Our declared holder is loaded.
 370     constantTag tag = cpool->tag_ref_at(index);
 371     methodHandle m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
 372     if (!m.is_null()) {
 373       // We found the method.
 374       return m;
 375     }
 376   }
 377 
 378   // Either the declared holder was not loaded, or the method could
 379   // not be found.
 380 
 381   return NULL;
 382 }
 383 
 384 // ------------------------------------------------------------------
 385 InstanceKlass* JVMCIEnv::get_instance_klass_for_declared_method_holder(Klass* method_holder) {
 386   // For the case of <array>.clone(), the method holder can be an ArrayKlass*
 387   // instead of an InstanceKlass*.  For that case simply pretend that the
 388   // declared holder is Object.clone since that's where the call will bottom out.
 389   if (method_holder->is_instance_klass()) {
 390     return InstanceKlass::cast(method_holder);
 391   } else if (method_holder->is_array_klass()) {
 392     return SystemDictionary::Object_klass();
 393   } else {
 394     ShouldNotReachHere();
 395   }
 396   return NULL;
 397 }
 398 
 399 
 400 // ------------------------------------------------------------------
 401 methodHandle JVMCIEnv::get_method_by_index(const constantPoolHandle& cpool,
 402                                      int index, Bytecodes::Code bc,
 403                                      InstanceKlass* accessor) {
 404   ResourceMark rm;
 405   return get_method_by_index_impl(cpool, index, bc, accessor);
 406 }
 407 
 408 // ------------------------------------------------------------------
 409 // Check for changes to the system dictionary during compilation
 410 // class loads, evolution, breakpoints
 411 JVMCIEnv::CodeInstallResult JVMCIEnv::validate_compile_task_dependencies(Dependencies* dependencies, Handle compiled_code,
 412                                                                          JVMCIEnv* env, char** failure_detail) {
 413   // If JVMTI capabilities were enabled during compile, the compilation is invalidated.
 414   if (env != NULL) {
 415     if (!env->_jvmti_can_hotswap_or_post_breakpoint && JvmtiExport::can_hotswap_or_post_breakpoint()) {
 416       *failure_detail = (char*) "Hotswapping or breakpointing was enabled during compilation";
 417       return JVMCIEnv::dependencies_failed;
 418     }
 419   }
 420 
 421   // Dependencies must be checked when the system dictionary changes
 422   // or if we don't know whether it has changed (i.e., env == NULL).
 423   bool counter_changed = env == NULL || env->_system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
 424   CompileTask* task = env == NULL ? NULL : env->task();
 425   Dependencies::DepType result = dependencies->validate_dependencies(task, counter_changed, failure_detail);
 426   if (result == Dependencies::end_marker) {
 427     return JVMCIEnv::ok;
 428   }
 429 
 430   if (!Dependencies::is_klass_type(result) || counter_changed) {
 431     return JVMCIEnv::dependencies_failed;
 432   }
 433   // The dependencies were invalid at the time of installation
 434   // without any intervening modification of the system
 435   // dictionary.  That means they were invalidly constructed.
 436   return JVMCIEnv::dependencies_invalid;
 437 }
 438 
 439 // ------------------------------------------------------------------
 440 JVMCIEnv::CodeInstallResult JVMCIEnv::register_method(
 441                                 const methodHandle& method,
 442                                 nmethod*& nm,
 443                                 int entry_bci,
 444                                 CodeOffsets* offsets,
 445                                 int orig_pc_offset,
 446                                 CodeBuffer* code_buffer,
 447                                 int frame_words,
 448                                 OopMapSet* oop_map_set,
 449                                 ExceptionHandlerTable* handler_table,
 450                                 AbstractCompiler* compiler,
 451                                 DebugInformationRecorder* debug_info,
 452                                 Dependencies* dependencies,
 453                                 JVMCIEnv* env,
 454                                 int compile_id,
 455                                 bool has_unsafe_access,
 456                                 bool has_wide_vector,
 457                                 Handle installed_code,
 458                                 Handle compiled_code,
 459                                 Handle speculation_log) {
 460   JVMCI_EXCEPTION_CONTEXT;
 461   nm = NULL;
 462   int comp_level = CompLevel_full_optimization;
 463   char* failure_detail = NULL;
 464   JVMCIEnv::CodeInstallResult result;
 465   {
 466     // To prevent compile queue updates.
 467     MutexLocker locker(MethodCompileQueue_lock, THREAD);
 468 
 469     // Prevent SystemDictionary::add_to_hierarchy from running
 470     // and invalidating our dependencies until we install this method.
 471     MutexLocker ml(Compile_lock);
 472 
 473     // Encode the dependencies now, so we can check them right away.
 474     dependencies->encode_content_bytes();
 475 
 476     // Record the dependencies for the current compile in the log
 477     if (LogCompilation) {
 478       for (Dependencies::DepStream deps(dependencies); deps.next(); ) {
 479         deps.log_dependency();
 480       }
 481     }
 482 
 483     // Check for {class loads, evolution, breakpoints} during compilation
 484     result = validate_compile_task_dependencies(dependencies, compiled_code, env, &failure_detail);
 485     if (result != JVMCIEnv::ok) {
 486       // While not a true deoptimization, it is a preemptive decompile.
 487       MethodData* mdp = method()->method_data();
 488       if (mdp != NULL) {
 489         mdp->inc_decompile_count();
 490 #ifdef ASSERT
 491         if (mdp->decompile_count() > (uint)PerMethodRecompilationCutoff) {
 492           ResourceMark m;
 493           tty->print_cr("WARN: endless recompilation of %s. Method was set to not compilable.", method()->name_and_sig_as_C_string());
 494         }
 495 #endif
 496       }
 497 
 498       // All buffers in the CodeBuffer are allocated in the CodeCache.
 499       // If the code buffer is created on each compile attempt
 500       // as in C2, then it must be freed.
 501       //code_buffer->free_blob();
 502     } else {
 503       ImplicitExceptionTable implicit_tbl;
 504       nm =  nmethod::new_nmethod(method,
 505                                  compile_id,
 506                                  entry_bci,
 507                                  offsets,
 508                                  orig_pc_offset,
 509                                  debug_info, dependencies, code_buffer,
 510                                  frame_words, oop_map_set,
 511                                  handler_table, &implicit_tbl,
 512                                  compiler, comp_level,
 513                                  JNIHandles::make_weak_global(installed_code),
 514                                  JNIHandles::make_weak_global(speculation_log));
 515 
 516       // Free codeBlobs
 517       //code_buffer->free_blob();
 518       if (nm == NULL) {
 519         // The CodeCache is full.  Print out warning and disable compilation.
 520         {
 521           MutexUnlocker ml(Compile_lock);
 522           MutexUnlocker locker(MethodCompileQueue_lock);
 523           CompileBroker::handle_full_code_cache(CodeCache::get_code_blob_type(comp_level));
 524         }
 525       } else {
 526         nm->set_has_unsafe_access(has_unsafe_access);
 527         nm->set_has_wide_vectors(has_wide_vector);
 528 
 529         // Record successful registration.
 530         // (Put nm into the task handle *before* publishing to the Java heap.)
 531         CompileTask* task = env == NULL ? NULL : env->task();
 532         if (task != NULL) {
 533           task->set_code(nm);
 534         }
 535 
 536         if (installed_code->is_a(HotSpotNmethod::klass()) && HotSpotNmethod::isDefault(installed_code())) {
 537           if (entry_bci == InvocationEntryBci) {
 538             if (TieredCompilation) {
 539               // If there is an old version we're done with it
 540               CompiledMethod* old = method->code();
 541               if (TraceMethodReplacement && old != NULL) {
 542                 ResourceMark rm;
 543                 char *method_name = method->name_and_sig_as_C_string();
 544                 tty->print_cr("Replacing method %s", method_name);
 545               }
 546               if (old != NULL ) {
 547                 old->make_not_entrant();
 548               }
 549             }
 550             if (TraceNMethodInstalls) {
 551               ResourceMark rm;
 552               char *method_name = method->name_and_sig_as_C_string();
 553               ttyLocker ttyl;
 554               tty->print_cr("Installing method (%d) %s [entry point: %p]",
 555                             comp_level,
 556                             method_name, nm->entry_point());
 557             }
 558             // Allow the code to be executed
 559             method->set_code(method, nm);
 560           } else {
 561             if (TraceNMethodInstalls ) {
 562               ResourceMark rm;
 563               char *method_name = method->name_and_sig_as_C_string();
 564               ttyLocker ttyl;
 565               tty->print_cr("Installing osr method (%d) %s @ %d",
 566                             comp_level,
 567                             method_name,
 568                             entry_bci);
 569             }
 570             InstanceKlass::cast(method->method_holder())->add_osr_nmethod(nm);
 571           }
 572         }
 573         nm->make_in_use();
 574       }
 575       result = nm != NULL ? JVMCIEnv::ok :JVMCIEnv::cache_full;
 576     }
 577   }
 578 
 579   // String creation must be done outside lock
 580   if (failure_detail != NULL) {
 581     // A failure to allocate the string is silently ignored.
 582     Handle message = java_lang_String::create_from_str(failure_detail, THREAD);
 583     HotSpotCompiledNmethod::set_installationFailureMessage(compiled_code, message());
 584   }
 585 
 586   // JVMTI -- compiled method notification (must be done outside lock)
 587   if (nm != NULL) {
 588     nm->post_compiled_method_load_event();
 589 
 590     if (env == NULL) {
 591       // This compile didn't come through the CompileBroker so perform the printing here
 592       DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
 593       nm->maybe_print_nmethod(directive);
 594       DirectivesStack::release(directive);
 595     }
 596   }
 597 
 598   return result;
 599 }