1 /*
   2  * Copyright (c) 1999, 2019, 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/fieldDescriptor.inline.hpp"
  48 #include "runtime/handles.inline.hpp"
  49 #include "runtime/init.hpp"
  50 #include "runtime/reflection.hpp"
  51 #include "runtime/sharedRuntime.hpp"
  52 #include "runtime/sweeper.hpp"
  53 #include "utilities/dtrace.hpp"
  54 #include "jvmci/jvmciRuntime.hpp"
  55 #include "jvmci/jvmciJavaClasses.hpp"
  56 
  57 JVMCIEnv::JVMCIEnv(CompileTask* task, int system_dictionary_modification_counter):
  58   _task(task),
  59   _system_dictionary_modification_counter(system_dictionary_modification_counter),
  60   _retryable(true),
  61   _failure_reason(NULL),
  62   _failure_reason_on_C_heap(false)
  63 {
  64   // Get Jvmti capabilities under lock to get consistent values.
  65   MutexLocker mu(JvmtiThreadState_lock);
  66   _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint() ? 1 : 0;
  67   _jvmti_can_access_local_variables     = JvmtiExport::can_access_local_variables() ? 1 : 0;
  68   _jvmti_can_post_on_exceptions         = JvmtiExport::can_post_on_exceptions() ? 1 : 0;
  69   _jvmti_can_pop_frame                  = JvmtiExport::can_pop_frame() ? 1 : 0;
  70 }
  71 
  72 bool JVMCIEnv::jvmti_state_changed() const {
  73   if (!jvmti_can_access_local_variables() &&
  74       JvmtiExport::can_access_local_variables()) {
  75     return true;
  76   }
  77   if (!jvmti_can_hotswap_or_post_breakpoint() &&
  78       JvmtiExport::can_hotswap_or_post_breakpoint()) {
  79     return true;
  80   }
  81   if (!jvmti_can_post_on_exceptions() &&
  82       JvmtiExport::can_post_on_exceptions()) {
  83     return true;
  84   }
  85   if (!jvmti_can_pop_frame() &&
  86       JvmtiExport::can_pop_frame()) {
  87     return true;
  88   }
  89   return false;
  90 }
  91 
  92 // ------------------------------------------------------------------
  93 // Note: the logic of this method should mirror the logic of
  94 // constantPoolOopDesc::verify_constant_pool_resolve.
  95 bool JVMCIEnv::check_klass_accessibility(Klass* accessing_klass, Klass* resolved_klass) {
  96   if (accessing_klass->is_objArray_klass()) {
  97     accessing_klass = ObjArrayKlass::cast(accessing_klass)->bottom_klass();
  98   }
  99   if (!accessing_klass->is_instance_klass()) {
 100     return true;
 101   }
 102 
 103   if (resolved_klass->is_objArray_klass()) {
 104     // Find the element klass, if this is an array.
 105     resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
 106   }
 107   if (resolved_klass->is_instance_klass()) {
 108     Reflection::VerifyClassAccessResults result =
 109       Reflection::verify_class_access(accessing_klass, InstanceKlass::cast(resolved_klass), true);
 110     return result == Reflection::ACCESS_OK;
 111   }
 112   return true;
 113 }
 114 
 115 // ------------------------------------------------------------------
 116 Klass* JVMCIEnv::get_klass_by_name_impl(Klass* accessing_klass,
 117                                         const constantPoolHandle& cpool,
 118                                         Symbol* sym,
 119                                         bool require_local) {
 120   JVMCI_EXCEPTION_CONTEXT;
 121 
 122   // Now we need to check the SystemDictionary
 123   if ((sym->starts_with('L') || sym->starts_with('Q')) &&
 124       sym->ends_with(';')) {
 125     // This is a name from a signature.  Strip off the trimmings.
 126     // Call recursive to keep scope of strippedsym.
 127     TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
 128                     sym->utf8_length()-2,
 129                     CHECK_NULL);
 130     return get_klass_by_name_impl(accessing_klass, cpool, strippedsym, require_local);
 131   }
 132 
 133   Handle loader(THREAD, (oop)NULL);
 134   Handle domain(THREAD, (oop)NULL);
 135   if (accessing_klass != NULL) {
 136     loader = Handle(THREAD, accessing_klass->class_loader());
 137     domain = Handle(THREAD, accessing_klass->protection_domain());
 138   }
 139 
 140   Klass* found_klass = NULL;
 141   {
 142     ttyUnlocker ttyul;  // release tty lock to avoid ordering problems
 143     MutexLocker ml(Compile_lock);
 144     if (!require_local) {
 145       found_klass = SystemDictionary::find_constrained_instance_or_array_klass(sym, loader, CHECK_NULL);
 146     } else {
 147       found_klass = SystemDictionary::find_instance_or_array_klass(sym, loader, domain, CHECK_NULL);
 148     }
 149   }
 150 
 151   // If we fail to find an array klass, look again for its element type.
 152   // The element type may be available either locally or via constraints.
 153   // In either case, if we can find the element type in the system dictionary,
 154   // we must build an array type around it.  The CI requires array klasses
 155   // to be loaded if their element klasses are loaded, except when memory
 156   // is exhausted.
 157   if (sym->char_at(0) == '[' &&
 158       (sym->char_at(1) == '[' || sym->char_at(1) == 'L' || sym->char_at(1) == 'Q')) {
 159     // We have an unloaded array.
 160     // Build it on the fly if the element class exists.
 161     TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
 162                                                  sym->utf8_length()-1,
 163                                                  CHECK_NULL);
 164 
 165     // Get element Klass recursively.
 166     Klass* elem_klass =
 167       get_klass_by_name_impl(accessing_klass,
 168                              cpool,
 169                              elem_sym,
 170                              require_local);
 171     if (elem_klass != NULL) {
 172       // Now make an array for it
 173       return elem_klass->array_klass(THREAD);
 174     }
 175   }
 176 
 177   if (found_klass == NULL && !cpool.is_null() && cpool->has_preresolution()) {
 178     // Look inside the constant pool for pre-resolved class entries.
 179     for (int i = cpool->length() - 1; i >= 1; i--) {
 180       if (cpool->tag_at(i).is_klass()) {
 181         Klass*  kls = cpool->resolved_klass_at(i);
 182         if (kls->name() == sym) {
 183           return kls;
 184         }
 185       }
 186     }
 187   }
 188 
 189   return found_klass;
 190 }
 191 
 192 // ------------------------------------------------------------------
 193 Klass* JVMCIEnv::get_klass_by_name(Klass* accessing_klass,
 194                                   Symbol* klass_name,
 195                                   bool require_local) {
 196   ResourceMark rm;
 197   constantPoolHandle cpool;
 198   return get_klass_by_name_impl(accessing_klass,
 199                                 cpool,
 200                                 klass_name,
 201                                 require_local);
 202 }
 203 
 204 // ------------------------------------------------------------------
 205 // Implementation of get_klass_by_index.
 206 Klass* JVMCIEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
 207                                         int index,
 208                                         bool& is_accessible,
 209                                         Klass* accessor) {
 210   JVMCI_EXCEPTION_CONTEXT;
 211   Klass* klass = ConstantPool::klass_at_if_loaded(cpool, index);
 212   Symbol* klass_name = NULL;
 213   if (klass == NULL) {
 214     klass_name = cpool->klass_name_at(index);
 215   }
 216 
 217   if (klass == NULL) {
 218     // Not found in constant pool.  Use the name to do the lookup.
 219     Klass* k = get_klass_by_name_impl(accessor,
 220                                       cpool,
 221                                       klass_name,
 222                                       false);
 223     // Calculate accessibility the hard way.
 224     if (k == NULL) {
 225       is_accessible = false;
 226     } else if (k->class_loader() != accessor->class_loader() &&
 227                get_klass_by_name_impl(accessor, cpool, k->name(), true) == NULL) {
 228       // Loaded only remotely.  Not linked yet.
 229       is_accessible = false;
 230     } else {
 231       // Linked locally, and we must also check public/private, etc.
 232       is_accessible = check_klass_accessibility(accessor, k);
 233     }
 234     if (!is_accessible) {
 235       return NULL;
 236     }
 237     return k;
 238   }
 239 
 240   // It is known to be accessible, since it was found in the constant pool.
 241   is_accessible = true;
 242   return klass;
 243 }
 244 
 245 // ------------------------------------------------------------------
 246 // Get a klass from the constant pool.
 247 Klass* JVMCIEnv::get_klass_by_index(const constantPoolHandle& cpool,
 248                                     int index,
 249                                     bool& is_accessible,
 250                                     Klass* accessor) {
 251   ResourceMark rm;
 252   return get_klass_by_index_impl(cpool, index, is_accessible, accessor);
 253 }
 254 
 255 // ------------------------------------------------------------------
 256 // Implementation of get_field_by_index.
 257 //
 258 // Implementation note: the results of field lookups are cached
 259 // in the accessor klass.
 260 void JVMCIEnv::get_field_by_index_impl(InstanceKlass* klass, fieldDescriptor& field_desc,
 261                                         int index) {
 262   JVMCI_EXCEPTION_CONTEXT;
 263 
 264   assert(klass->is_linked(), "must be linked before using its constant-pool");
 265 
 266   constantPoolHandle cpool(thread, klass->constants());
 267 
 268   // Get the field's name, signature, and type.
 269   Symbol* name  = cpool->name_ref_at(index);
 270 
 271   int nt_index = cpool->name_and_type_ref_index_at(index);
 272   int sig_index = cpool->signature_ref_index_at(nt_index);
 273   Symbol* signature = cpool->symbol_at(sig_index);
 274 
 275   // Get the field's declared holder.
 276   int holder_index = cpool->klass_ref_index_at(index);
 277   bool holder_is_accessible;
 278   Klass* declared_holder = get_klass_by_index(cpool, holder_index,
 279                                               holder_is_accessible,
 280                                               klass);
 281 
 282   // The declared holder of this field may not have been loaded.
 283   // Bail out with partial field information.
 284   if (!holder_is_accessible) {
 285     return;
 286   }
 287 
 288 
 289   // Perform the field lookup.
 290   Klass*  canonical_holder =
 291     InstanceKlass::cast(declared_holder)->find_field(name, signature, &field_desc);
 292   if (canonical_holder == NULL) {
 293     return;
 294   }
 295 
 296   assert(canonical_holder == field_desc.field_holder(), "just checking");
 297 }
 298 
 299 // ------------------------------------------------------------------
 300 // Get a field by index from a klass's constant pool.
 301 void JVMCIEnv::get_field_by_index(InstanceKlass* accessor, fieldDescriptor& fd, int index) {
 302   ResourceMark rm;
 303   return get_field_by_index_impl(accessor, fd, index);
 304 }
 305 
 306 // ------------------------------------------------------------------
 307 // Perform an appropriate method lookup based on accessor, holder,
 308 // name, signature, and bytecode.
 309 methodHandle JVMCIEnv::lookup_method(InstanceKlass* accessor,
 310                                Klass*         holder,
 311                                Symbol*        name,
 312                                Symbol*        sig,
 313                                Bytecodes::Code bc,
 314                                constantTag   tag) {
 315   // Accessibility checks are performed in JVMCIEnv::get_method_by_index_impl().
 316   assert(check_klass_accessibility(accessor, holder), "holder not accessible");
 317 
 318   methodHandle dest_method;
 319   LinkInfo link_info(holder, name, sig, accessor, LinkInfo::needs_access_check, tag);
 320   switch (bc) {
 321   case Bytecodes::_invokestatic:
 322     dest_method =
 323       LinkResolver::resolve_static_call_or_null(link_info);
 324     break;
 325   case Bytecodes::_invokespecial:
 326     dest_method =
 327       LinkResolver::resolve_special_call_or_null(link_info);
 328     break;
 329   case Bytecodes::_invokeinterface:
 330     dest_method =
 331       LinkResolver::linktime_resolve_interface_method_or_null(link_info);
 332     break;
 333   case Bytecodes::_invokevirtual:
 334     dest_method =
 335       LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
 336     break;
 337   default: ShouldNotReachHere();
 338   }
 339 
 340   return dest_method;
 341 }
 342 
 343 
 344 // ------------------------------------------------------------------
 345 methodHandle JVMCIEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
 346                                           int index, Bytecodes::Code bc,
 347                                           InstanceKlass* accessor) {
 348   if (bc == Bytecodes::_invokedynamic) {
 349     ConstantPoolCacheEntry* cpce = cpool->invokedynamic_cp_cache_entry_at(index);
 350     bool is_resolved = !cpce->is_f1_null();
 351     if (is_resolved) {
 352       // Get the invoker Method* from the constant pool.
 353       // (The appendix argument, if any, will be noted in the method's signature.)
 354       Method* adapter = cpce->f1_as_method();
 355       return methodHandle(adapter);
 356     }
 357 
 358     return NULL;
 359   }
 360 
 361   int holder_index = cpool->klass_ref_index_at(index);
 362   bool holder_is_accessible;
 363   Klass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
 364 
 365   // Get the method's name and signature.
 366   Symbol* name_sym = cpool->name_ref_at(index);
 367   Symbol* sig_sym  = cpool->signature_ref_at(index);
 368 
 369   if (cpool->has_preresolution()
 370       || ((holder == SystemDictionary::MethodHandle_klass() || holder == SystemDictionary::VarHandle_klass()) &&
 371           MethodHandles::is_signature_polymorphic_name(holder, name_sym))) {
 372     // Short-circuit lookups for JSR 292-related call sites.
 373     // That is, do not rely only on name-based lookups, because they may fail
 374     // if the names are not resolvable in the boot class loader (7056328).
 375     switch (bc) {
 376     case Bytecodes::_invokevirtual:
 377     case Bytecodes::_invokeinterface:
 378     case Bytecodes::_invokespecial:
 379     case Bytecodes::_invokestatic:
 380       {
 381         Method* m = ConstantPool::method_at_if_loaded(cpool, index);
 382         if (m != NULL) {
 383           return m;
 384         }
 385       }
 386       break;
 387     default:
 388       break;
 389     }
 390   }
 391 
 392   if (holder_is_accessible) { // Our declared holder is loaded.
 393     constantTag tag = cpool->tag_ref_at(index);
 394     methodHandle m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
 395     if (!m.is_null()) {
 396       // We found the method.
 397       return m;
 398     }
 399   }
 400 
 401   // Either the declared holder was not loaded, or the method could
 402   // not be found.
 403 
 404   return NULL;
 405 }
 406 
 407 // ------------------------------------------------------------------
 408 InstanceKlass* JVMCIEnv::get_instance_klass_for_declared_method_holder(Klass* method_holder) {
 409   // For the case of <array>.clone(), the method holder can be an ArrayKlass*
 410   // instead of an InstanceKlass*.  For that case simply pretend that the
 411   // declared holder is Object.clone since that's where the call will bottom out.
 412   if (method_holder->is_instance_klass()) {
 413     return InstanceKlass::cast(method_holder);
 414   } else if (method_holder->is_array_klass()) {
 415     return SystemDictionary::Object_klass();
 416   } else {
 417     ShouldNotReachHere();
 418   }
 419   return NULL;
 420 }
 421 
 422 
 423 // ------------------------------------------------------------------
 424 methodHandle JVMCIEnv::get_method_by_index(const constantPoolHandle& cpool,
 425                                      int index, Bytecodes::Code bc,
 426                                      InstanceKlass* accessor) {
 427   ResourceMark rm;
 428   return get_method_by_index_impl(cpool, index, bc, accessor);
 429 }
 430 
 431 // ------------------------------------------------------------------
 432 // Check for changes to the system dictionary during compilation
 433 // class loads, evolution, breakpoints
 434 JVMCIEnv::CodeInstallResult JVMCIEnv::validate_compile_task_dependencies(Dependencies* dependencies, Handle compiled_code,
 435                                                                          JVMCIEnv* env, char** failure_detail) {
 436   // If JVMTI capabilities were enabled during compile, the compilation is invalidated.
 437   if (env != NULL && env->jvmti_state_changed()) {
 438     *failure_detail = (char*) "Jvmti state change during compilation invalidated dependencies";
 439     return JVMCIEnv::dependencies_failed;
 440   }
 441 
 442   // Dependencies must be checked when the system dictionary changes
 443   // or if we don't know whether it has changed (i.e., env == NULL).
 444   bool counter_changed = env == NULL || env->_system_dictionary_modification_counter != SystemDictionary::number_of_modifications();
 445   CompileTask* task = env == NULL ? NULL : env->task();
 446   Dependencies::DepType result = dependencies->validate_dependencies(task, counter_changed, failure_detail);
 447   if (result == Dependencies::end_marker) {
 448     return JVMCIEnv::ok;
 449   }
 450 
 451   if (!Dependencies::is_klass_type(result) || counter_changed) {
 452     return JVMCIEnv::dependencies_failed;
 453   }
 454   // The dependencies were invalid at the time of installation
 455   // without any intervening modification of the system
 456   // dictionary.  That means they were invalidly constructed.
 457   return JVMCIEnv::dependencies_invalid;
 458 }
 459 
 460 // ------------------------------------------------------------------
 461 JVMCIEnv::CodeInstallResult JVMCIEnv::register_method(
 462                                 const methodHandle& method,
 463                                 nmethod*& nm,
 464                                 int entry_bci,
 465                                 CodeOffsets* offsets,
 466                                 int orig_pc_offset,
 467                                 CodeBuffer* code_buffer,
 468                                 int frame_words,
 469                                 OopMapSet* oop_map_set,
 470                                 ExceptionHandlerTable* handler_table,
 471                                 AbstractCompiler* compiler,
 472                                 DebugInformationRecorder* debug_info,
 473                                 Dependencies* dependencies,
 474                                 JVMCIEnv* env,
 475                                 int compile_id,
 476                                 bool has_unsafe_access,
 477                                 bool has_wide_vector,
 478                                 Handle installed_code,
 479                                 Handle compiled_code,
 480                                 Handle speculation_log) {
 481   JVMCI_EXCEPTION_CONTEXT;
 482   nm = NULL;
 483   int comp_level = CompLevel_full_optimization;
 484   char* failure_detail = NULL;
 485   JVMCIEnv::CodeInstallResult result;
 486   {
 487     // To prevent compile queue updates.
 488     MutexLocker locker(MethodCompileQueue_lock, THREAD);
 489 
 490     // Prevent SystemDictionary::add_to_hierarchy from running
 491     // and invalidating our dependencies until we install this method.
 492     MutexLocker ml(Compile_lock);
 493 
 494     // Encode the dependencies now, so we can check them right away.
 495     dependencies->encode_content_bytes();
 496 
 497     // Record the dependencies for the current compile in the log
 498     if (LogCompilation) {
 499       for (Dependencies::DepStream deps(dependencies); deps.next(); ) {
 500         deps.log_dependency();
 501       }
 502     }
 503 
 504     // Check for {class loads, evolution, breakpoints} during compilation
 505     result = validate_compile_task_dependencies(dependencies, compiled_code, env, &failure_detail);
 506     if (result != JVMCIEnv::ok) {
 507       // While not a true deoptimization, it is a preemptive decompile.
 508       MethodData* mdp = method()->method_data();
 509       if (mdp != NULL) {
 510         mdp->inc_decompile_count();
 511 #ifdef ASSERT
 512         if (mdp->decompile_count() > (uint)PerMethodRecompilationCutoff) {
 513           ResourceMark m;
 514           tty->print_cr("WARN: endless recompilation of %s. Method was set to not compilable.", method()->name_and_sig_as_C_string());
 515         }
 516 #endif
 517       }
 518 
 519       // All buffers in the CodeBuffer are allocated in the CodeCache.
 520       // If the code buffer is created on each compile attempt
 521       // as in C2, then it must be freed.
 522       //code_buffer->free_blob();
 523     } else {
 524       ImplicitExceptionTable implicit_tbl;
 525       nm =  nmethod::new_nmethod(method,
 526                                  compile_id,
 527                                  entry_bci,
 528                                  offsets,
 529                                  orig_pc_offset,
 530                                  debug_info, dependencies, code_buffer,
 531                                  frame_words, oop_map_set,
 532                                  handler_table, &implicit_tbl,
 533                                  compiler, comp_level,
 534                                  JNIHandles::make_weak_global(installed_code),
 535                                  JNIHandles::make_weak_global(speculation_log));
 536 
 537       // Free codeBlobs
 538       //code_buffer->free_blob();
 539       if (nm == NULL) {
 540         // The CodeCache is full.  Print out warning and disable compilation.
 541         {
 542           MutexUnlocker ml(Compile_lock);
 543           MutexUnlocker locker(MethodCompileQueue_lock);
 544           CompileBroker::handle_full_code_cache(CodeCache::get_code_blob_type(comp_level));
 545         }
 546       } else {
 547         nm->set_has_unsafe_access(has_unsafe_access);
 548         nm->set_has_wide_vectors(has_wide_vector);
 549 
 550         // Record successful registration.
 551         // (Put nm into the task handle *before* publishing to the Java heap.)
 552         CompileTask* task = env == NULL ? NULL : env->task();
 553         if (task != NULL) {
 554           task->set_code(nm);
 555         }
 556 
 557         if (installed_code->is_a(HotSpotNmethod::klass()) && HotSpotNmethod::isDefault(installed_code())) {
 558           if (entry_bci == InvocationEntryBci) {
 559             if (TieredCompilation) {
 560               // If there is an old version we're done with it
 561               CompiledMethod* old = method->code();
 562               if (TraceMethodReplacement && old != NULL) {
 563                 ResourceMark rm;
 564                 char *method_name = method->name_and_sig_as_C_string();
 565                 tty->print_cr("Replacing method %s", method_name);
 566               }
 567               if (old != NULL ) {
 568                 old->make_not_entrant();
 569               }
 570             }
 571             if (TraceNMethodInstalls) {
 572               ResourceMark rm;
 573               char *method_name = method->name_and_sig_as_C_string();
 574               ttyLocker ttyl;
 575               tty->print_cr("Installing method (%d) %s [entry point: %p]",
 576                             comp_level,
 577                             method_name, nm->entry_point());
 578             }
 579             // Allow the code to be executed
 580             method->set_code(method, nm);
 581           } else {
 582             if (TraceNMethodInstalls ) {
 583               ResourceMark rm;
 584               char *method_name = method->name_and_sig_as_C_string();
 585               ttyLocker ttyl;
 586               tty->print_cr("Installing osr method (%d) %s @ %d",
 587                             comp_level,
 588                             method_name,
 589                             entry_bci);
 590             }
 591             InstanceKlass::cast(method->method_holder())->add_osr_nmethod(nm);
 592           }
 593         }
 594         nm->make_in_use();
 595       }
 596       result = nm != NULL ? JVMCIEnv::ok :JVMCIEnv::cache_full;
 597     }
 598   }
 599 
 600   // String creation must be done outside lock
 601   if (failure_detail != NULL) {
 602     // A failure to allocate the string is silently ignored.
 603     Handle message = java_lang_String::create_from_str(failure_detail, THREAD);
 604     HotSpotCompiledNmethod::set_installationFailureMessage(compiled_code, message());
 605   }
 606 
 607   // JVMTI -- compiled method notification (must be done outside lock)
 608   if (nm != NULL) {
 609     nm->post_compiled_method_load_event();
 610 
 611     if (env == NULL) {
 612       // This compile didn't come through the CompileBroker so perform the printing here
 613       DirectiveSet* directive = DirectivesStack::getMatchingDirective(method, compiler);
 614       nm->maybe_print_nmethod(directive);
 615       DirectivesStack::release(directive);
 616     }
 617   }
 618 
 619   return result;
 620 }