src/hotspot/share/classfile/systemDictionary.cpp
author iklam
Tue, 07 Aug 2018 15:45:07 -0700
changeset 51329 9c68699bebe5
parent 51268 4ac20e5f96ce
child 51375 b812a85b3aa4
permissions -rw-r--r--
8208999: Some use of Klass* should be replaced by InstanceKlass* Summary: Klass::java_super() => InstanceKlass*; InstanceKlass::{local,transitive}_interfaces() => Array<InstanceKlass*>* Reviewed-by: coleenp, hseigel
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/*
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 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "jvm.h"
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#include "aot/aotLoader.hpp"
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#include "classfile/classFileParser.hpp"
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#include "classfile/classFileStream.hpp"
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#include "classfile/classLoader.hpp"
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#include "classfile/classLoaderData.inline.hpp"
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#include "classfile/classLoaderExt.hpp"
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#include "classfile/dictionary.hpp"
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#include "classfile/javaClasses.inline.hpp"
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#include "classfile/klassFactory.hpp"
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#include "classfile/loaderConstraints.hpp"
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#include "classfile/packageEntry.hpp"
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#include "classfile/placeholders.hpp"
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#include "classfile/protectionDomainCache.hpp"
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#include "classfile/resolutionErrors.hpp"
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#include "classfile/stringTable.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "classfile/vmSymbols.hpp"
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#include "code/codeCache.hpp"
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#include "compiler/compileBroker.hpp"
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#include "gc/shared/gcTraceTime.inline.hpp"
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#include "gc/shared/oopStorage.inline.hpp"
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#include "interpreter/bytecodeStream.hpp"
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#include "interpreter/interpreter.hpp"
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#include "jfr/jfrEvents.hpp"
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#include "logging/log.hpp"
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#include "logging/logStream.hpp"
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#include "memory/filemap.hpp"
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#include "memory/metaspaceClosure.hpp"
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#include "memory/oopFactory.hpp"
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#include "memory/resourceArea.hpp"
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#include "oops/access.inline.hpp"
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#include "oops/instanceKlass.hpp"
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#include "oops/instanceRefKlass.hpp"
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#include "oops/klass.inline.hpp"
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#include "oops/method.inline.hpp"
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#include "oops/methodData.hpp"
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#include "oops/objArrayKlass.hpp"
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#include "oops/objArrayOop.inline.hpp"
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#include "oops/oop.inline.hpp"
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#include "oops/symbol.hpp"
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#include "oops/typeArrayKlass.hpp"
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#include "prims/jvmtiEnvBase.hpp"
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#include "prims/resolvedMethodTable.hpp"
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#include "prims/methodHandles.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/arguments_ext.hpp"
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#include "runtime/biasedLocking.hpp"
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#include "runtime/fieldType.hpp"
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#include "runtime/handles.inline.hpp"
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#include "runtime/java.hpp"
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#include "runtime/javaCalls.hpp"
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#include "runtime/mutexLocker.hpp"
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#include "runtime/orderAccess.hpp"
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#include "runtime/sharedRuntime.hpp"
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#include "runtime/signature.hpp"
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#include "services/classLoadingService.hpp"
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#include "services/diagnosticCommand.hpp"
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#include "services/threadService.hpp"
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#include "utilities/macros.hpp"
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#if INCLUDE_CDS
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#include "classfile/systemDictionaryShared.hpp"
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#endif
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#if INCLUDE_JVMCI
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#include "jvmci/jvmciRuntime.hpp"
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#endif
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PlaceholderTable*      SystemDictionary::_placeholders        = NULL;
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Dictionary*            SystemDictionary::_shared_dictionary   = NULL;
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LoaderConstraintTable* SystemDictionary::_loader_constraints  = NULL;
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ResolutionErrorTable*  SystemDictionary::_resolution_errors   = NULL;
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SymbolPropertyTable*   SystemDictionary::_invoke_method_table = NULL;
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ProtectionDomainCacheTable*   SystemDictionary::_pd_cache_table = NULL;
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int         SystemDictionary::_number_of_modifications = 0;
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oop         SystemDictionary::_system_loader_lock_obj     =  NULL;
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InstanceKlass*      SystemDictionary::_well_known_klasses[SystemDictionary::WKID_LIMIT]
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                                                          =  { NULL /*, NULL...*/ };
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InstanceKlass*      SystemDictionary::_box_klasses[T_VOID+1]      =  { NULL /*, NULL...*/ };
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oop         SystemDictionary::_java_system_loader         =  NULL;
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oop         SystemDictionary::_java_platform_loader       =  NULL;
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bool        SystemDictionary::_has_checkPackageAccess     =  false;
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// Default ProtectionDomainCacheSize value
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const int defaultProtectionDomainCacheSize = 1009;
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OopStorage* SystemDictionary::_vm_weak_oop_storage = NULL;
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// ----------------------------------------------------------------------------
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// Java-level SystemLoader and PlatformLoader
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oop SystemDictionary::java_system_loader() {
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  return _java_system_loader;
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}
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oop SystemDictionary::java_platform_loader() {
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  return _java_platform_loader;
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}
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void SystemDictionary::compute_java_loaders(TRAPS) {
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  JavaValue result(T_OBJECT);
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  InstanceKlass* class_loader_klass = SystemDictionary::ClassLoader_klass();
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  JavaCalls::call_static(&result,
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                         class_loader_klass,
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                         vmSymbols::getSystemClassLoader_name(),
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                         vmSymbols::void_classloader_signature(),
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                         CHECK);
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  _java_system_loader = (oop)result.get_jobject();
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  JavaCalls::call_static(&result,
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                         class_loader_klass,
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                         vmSymbols::getPlatformClassLoader_name(),
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                         vmSymbols::void_classloader_signature(),
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                         CHECK);
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  _java_platform_loader = (oop)result.get_jobject();
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}
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ClassLoaderData* SystemDictionary::register_loader(Handle class_loader) {
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  if (class_loader() == NULL) return ClassLoaderData::the_null_class_loader_data();
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  return ClassLoaderDataGraph::find_or_create(class_loader);
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}
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// ----------------------------------------------------------------------------
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// Parallel class loading check
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bool SystemDictionary::is_parallelCapable(Handle class_loader) {
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  if (class_loader.is_null()) return true;
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  if (AlwaysLockClassLoader) return false;
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  return java_lang_ClassLoader::parallelCapable(class_loader());
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}
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// ----------------------------------------------------------------------------
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// ParallelDefineClass flag does not apply to bootclass loader
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bool SystemDictionary::is_parallelDefine(Handle class_loader) {
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   if (class_loader.is_null()) return false;
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   if (AllowParallelDefineClass && java_lang_ClassLoader::parallelCapable(class_loader())) {
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     return true;
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   }
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   return false;
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}
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// Returns true if the passed class loader is the builtin application class loader
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// or a custom system class loader. A customer system class loader can be
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// specified via -Djava.system.class.loader.
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bool SystemDictionary::is_system_class_loader(oop class_loader) {
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  if (class_loader == NULL) {
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    return false;
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  }
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  return (class_loader->klass() == SystemDictionary::jdk_internal_loader_ClassLoaders_AppClassLoader_klass() ||
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         oopDesc::equals(class_loader, _java_system_loader));
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}
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// Returns true if the passed class loader is the platform class loader.
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bool SystemDictionary::is_platform_class_loader(oop class_loader) {
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  if (class_loader == NULL) {
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    return false;
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  }
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  return (class_loader->klass() == SystemDictionary::jdk_internal_loader_ClassLoaders_PlatformClassLoader_klass());
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}
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// ----------------------------------------------------------------------------
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// Resolving of classes
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// Forwards to resolve_or_null
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Klass* SystemDictionary::resolve_or_fail(Symbol* class_name, Handle class_loader, Handle protection_domain, bool throw_error, TRAPS) {
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  Klass* klass = resolve_or_null(class_name, class_loader, protection_domain, THREAD);
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  if (HAS_PENDING_EXCEPTION || klass == NULL) {
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    // can return a null klass
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    klass = handle_resolution_exception(class_name, throw_error, klass, THREAD);
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  }
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  return klass;
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}
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Klass* SystemDictionary::handle_resolution_exception(Symbol* class_name,
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                                                     bool throw_error,
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                                                     Klass* klass, TRAPS) {
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  if (HAS_PENDING_EXCEPTION) {
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    // If we have a pending exception we forward it to the caller, unless throw_error is true,
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    // in which case we have to check whether the pending exception is a ClassNotFoundException,
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    // and if so convert it to a NoClassDefFoundError
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    // And chain the original ClassNotFoundException
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    if (throw_error && PENDING_EXCEPTION->is_a(SystemDictionary::ClassNotFoundException_klass())) {
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      ResourceMark rm(THREAD);
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      assert(klass == NULL, "Should not have result with exception pending");
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      Handle e(THREAD, PENDING_EXCEPTION);
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      CLEAR_PENDING_EXCEPTION;
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      THROW_MSG_CAUSE_NULL(vmSymbols::java_lang_NoClassDefFoundError(), class_name->as_C_string(), e);
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    } else {
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      return NULL;
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    }
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  }
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  // Class not found, throw appropriate error or exception depending on value of throw_error
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  if (klass == NULL) {
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    ResourceMark rm(THREAD);
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    if (throw_error) {
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      THROW_MSG_NULL(vmSymbols::java_lang_NoClassDefFoundError(), class_name->as_C_string());
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    } else {
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      THROW_MSG_NULL(vmSymbols::java_lang_ClassNotFoundException(), class_name->as_C_string());
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    }
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  }
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  return klass;
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}
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Klass* SystemDictionary::resolve_or_fail(Symbol* class_name,
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                                           bool throw_error, TRAPS)
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{
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  return resolve_or_fail(class_name, Handle(), Handle(), throw_error, THREAD);
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}
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// Forwards to resolve_array_class_or_null or resolve_instance_class_or_null
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Klass* SystemDictionary::resolve_or_null(Symbol* class_name, Handle class_loader, Handle protection_domain, TRAPS) {
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  if (FieldType::is_array(class_name)) {
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    return resolve_array_class_or_null(class_name, class_loader, protection_domain, THREAD);
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  } else {
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    return resolve_instance_class_or_null_helper(class_name, class_loader, protection_domain, THREAD);
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  }
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}
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// name may be in the form of "java/lang/Object" or "Ljava/lang/Object;"
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InstanceKlass* SystemDictionary::resolve_instance_class_or_null_helper(Symbol* class_name,
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                                                                       Handle class_loader,
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                                                                       Handle protection_domain,
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                                                                       TRAPS) {
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  assert(class_name != NULL && !FieldType::is_array(class_name), "must be");
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  if (FieldType::is_obj(class_name)) {
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    ResourceMark rm(THREAD);
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    // Ignore wrapping L and ;.
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    TempNewSymbol name = SymbolTable::new_symbol(class_name->as_C_string() + 1,
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                                   class_name->utf8_length() - 2, CHECK_NULL);
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    return resolve_instance_class_or_null(name, class_loader, protection_domain, THREAD);
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  } else {
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    return resolve_instance_class_or_null(class_name, class_loader, protection_domain, THREAD);
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  }
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}
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Klass* SystemDictionary::resolve_or_null(Symbol* class_name, TRAPS) {
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  return resolve_or_null(class_name, Handle(), Handle(), THREAD);
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}
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// Forwards to resolve_instance_class_or_null
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Klass* SystemDictionary::resolve_array_class_or_null(Symbol* class_name,
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                                                     Handle class_loader,
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                                                     Handle protection_domain,
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                                                     TRAPS) {
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  assert(FieldType::is_array(class_name), "must be array");
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  Klass* k = NULL;
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  FieldArrayInfo fd;
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  // dimension and object_key in FieldArrayInfo are assigned as a side-effect
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  // of this call
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  BasicType t = FieldType::get_array_info(class_name, fd, CHECK_NULL);
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  if (t == T_OBJECT) {
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    // naked oop "k" is OK here -- we assign back into it
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    k = SystemDictionary::resolve_instance_class_or_null(fd.object_key(),
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                                                         class_loader,
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                                                         protection_domain,
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                                                         CHECK_NULL);
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    if (k != NULL) {
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      k = k->array_klass(fd.dimension(), CHECK_NULL);
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    }
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  } else {
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    k = Universe::typeArrayKlassObj(t);
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    k = TypeArrayKlass::cast(k)->array_klass(fd.dimension(), CHECK_NULL);
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  }
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  return k;
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}
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// Must be called for any super-class or super-interface resolution
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// during class definition to allow class circularity checking
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// super-interface callers:
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//    parse_interfaces - for defineClass & jvmtiRedefineClasses
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// super-class callers:
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//   ClassFileParser - for defineClass & jvmtiRedefineClasses
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   311
//   load_shared_class - while loading a class from shared archive
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//   resolve_instance_class_or_null:
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//     via: handle_parallel_super_load
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//      when resolving a class that has an existing placeholder with
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//      a saved superclass [i.e. a defineClass is currently in progress]
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//      if another thread is trying to resolve the class, it must do
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//      super-class checks on its own thread to catch class circularity
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// This last call is critical in class circularity checking for cases
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// where classloading is delegated to different threads and the
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// classloader lock is released.
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// Take the case: Base->Super->Base
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//   1. If thread T1 tries to do a defineClass of class Base
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//    resolve_super_or_fail creates placeholder: T1, Base (super Super)
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//   2. resolve_instance_class_or_null does not find SD or placeholder for Super
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//    so it tries to load Super
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//   3. If we load the class internally, or user classloader uses same thread
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//      loadClassFromxxx or defineClass via parseClassFile Super ...
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//      3.1 resolve_super_or_fail creates placeholder: T1, Super (super Base)
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   329
//      3.3 resolve_instance_class_or_null Base, finds placeholder for Base
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//      3.4 calls resolve_super_or_fail Base
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   331
//      3.5 finds T1,Base -> throws class circularity
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//OR 4. If T2 tries to resolve Super via defineClass Super ...
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   333
//      4.1 resolve_super_or_fail creates placeholder: T2, Super (super Base)
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   334
//      4.2 resolve_instance_class_or_null Base, finds placeholder for Base (super Super)
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//      4.3 calls resolve_super_or_fail Super in parallel on own thread T2
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//      4.4 finds T2, Super -> throws class circularity
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// Must be called, even if superclass is null, since this is
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// where the placeholder entry is created which claims this
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// thread is loading this class/classloader.
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// Be careful when modifying this code: once you have run
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// placeholders()->find_and_add(PlaceholderTable::LOAD_SUPER),
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   342
// you need to find_and_remove it before returning.
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// So be careful to not exit with a CHECK_ macro betweeen these calls.
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InstanceKlass* SystemDictionary::resolve_super_or_fail(Symbol* child_name,
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                                                       Symbol* super_name,
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                                                       Handle class_loader,
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                                                       Handle protection_domain,
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                                                       bool is_superclass,
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   349
                                                       TRAPS) {
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  assert(!FieldType::is_array(super_name), "invalid super class name");
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   351
#if INCLUDE_CDS
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   352
  if (DumpSharedSpaces) {
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   353
    // Special processing for CDS dump time.
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   354
    InstanceKlass* k = SystemDictionaryShared::dump_time_resolve_super_or_fail(child_name,
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   355
        super_name, class_loader, protection_domain, is_superclass, CHECK_NULL);
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   356
    if (k) {
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   357
      return k;
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   358
    }
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   359
  }
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   360
#endif // INCLUDE_CDS
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   361
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  // Double-check, if child class is already loaded, just return super-class,interface
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  // Don't add a placedholder if already loaded, i.e. already in appropriate class loader
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   364
  // dictionary.
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   365
  // Make sure there's a placeholder for the *child* before resolving.
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   366
  // Used as a claim that this thread is currently loading superclass/classloader
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   367
  // Used here for ClassCircularity checks and also for heap verification
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  // (every InstanceKlass needs to be in its class loader dictionary or have a placeholder).
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   369
  // Must check ClassCircularity before checking if super class is already loaded.
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   370
  //
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   371
  // We might not already have a placeholder if this child_name was
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   372
  // first seen via resolve_from_stream (jni_DefineClass or JVM_DefineClass);
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   373
  // the name of the class might not be known until the stream is actually
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   374
  // parsed.
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   375
  // Bugs 4643874, 4715493
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   376
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   377
  ClassLoaderData* loader_data = class_loader_data(class_loader);
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   378
  Dictionary* dictionary = loader_data->dictionary();
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   379
  unsigned int d_hash = dictionary->compute_hash(child_name);
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   380
  unsigned int p_hash = placeholders()->compute_hash(child_name);
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   381
  int p_index = placeholders()->hash_to_index(p_hash);
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   382
  // can't throw error holding a lock
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   383
  bool child_already_loaded = false;
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   384
  bool throw_circularity_error = false;
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   385
  {
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   386
    MutexLocker mu(SystemDictionary_lock, THREAD);
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   387
    InstanceKlass* childk = find_class(d_hash, child_name, dictionary);
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   388
    InstanceKlass* quicksuperk;
1
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   389
    // to support // loading: if child done loading, just return superclass
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diff changeset
   390
    // if super_name, & class_loader don't match:
1
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parents:
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   391
    // if initial define, SD update will give LinkageError
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parents:
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   392
    // if redefine: compare_class_versions will give HIERARCHY_CHANGED
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parents:
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   393
    // so we don't throw an exception here.
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parents:
diff changeset
   394
    // see: nsk redefclass014 & java.lang.instrument Instrument032
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   395
    if ((childk != NULL ) && (is_superclass) &&
51329
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diff changeset
   396
        ((quicksuperk = childk->java_super()) != NULL) &&
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diff changeset
   397
         ((quicksuperk->name() == super_name) &&
49658
8237a91c1cca 8199781: Don't use naked == for comparing oops
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diff changeset
   398
            (oopDesc::equals(quicksuperk->class_loader(), class_loader())))) {
1
489c9b5090e2 Initial load
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parents:
diff changeset
   399
           return quicksuperk;
489c9b5090e2 Initial load
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parents:
diff changeset
   400
    } else {
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diff changeset
   401
      PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, child_name, loader_data);
1
489c9b5090e2 Initial load
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parents:
diff changeset
   402
      if (probe && probe->check_seen_thread(THREAD, PlaceholderTable::LOAD_SUPER)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
          throw_circularity_error = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
      }
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   405
    }
9ce941df84eb 4670071: loadClassInternal is too restrictive.
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parents: 1550
diff changeset
   406
    if (!throw_circularity_error) {
40016
bf6fcd467a7b 8162340: Better class stream parsing
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diff changeset
   407
      // Be careful not to exit resolve_super
51329
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
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diff changeset
   408
      PlaceholderEntry* newprobe = placeholders()->find_and_add(p_index, p_hash, child_name, loader_data, PlaceholderTable::LOAD_SUPER, super_name, THREAD);
1
489c9b5090e2 Initial load
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parents:
diff changeset
   409
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  if (throw_circularity_error) {
489c9b5090e2 Initial load
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parents:
diff changeset
   412
      ResourceMark rm(THREAD);
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   413
      THROW_MSG_NULL(vmSymbols::java_lang_ClassCircularityError(), child_name->as_C_string());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
  }
489c9b5090e2 Initial load
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parents:
diff changeset
   415
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
// java.lang.Object should have been found above
51329
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diff changeset
   417
  assert(super_name != NULL, "null super class for resolving");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
  // Resolve the super class or interface, check results on return
51329
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diff changeset
   419
  InstanceKlass* superk =
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
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diff changeset
   420
    SystemDictionary::resolve_instance_class_or_null_helper(super_name,
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
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diff changeset
   421
                                                            class_loader,
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
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diff changeset
   422
                                                            protection_domain,
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
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diff changeset
   423
                                                            THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
15188
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acorn
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diff changeset
   425
  // Clean up of placeholders moved so that each classloadAction registrar self-cleans up
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   426
  // It is no longer necessary to keep the placeholder table alive until update_dictionary
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   427
  // or error. GC used to walk the placeholder table as strong roots.
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   428
  // The instanceKlass is kept alive because the class loader is on the stack,
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   429
  // which keeps the loader_data alive, as well as all instanceKlasses in
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   430
  // the loader_data. parseClassFile adds the instanceKlass to loader_data.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
  {
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   432
    MutexLocker mu(SystemDictionary_lock, THREAD);
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   433
    placeholders()->find_and_remove(p_index, p_hash, child_name, loader_data, PlaceholderTable::LOAD_SUPER, THREAD);
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   434
    SystemDictionary_lock->notify_all();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
  }
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   436
  if (HAS_PENDING_EXCEPTION || superk == NULL) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
    // can null superk
51329
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iklam
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diff changeset
   438
    Klass* k = handle_resolution_exception(super_name, true, superk, THREAD);
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   439
    assert(k == NULL || k == superk, "must be");
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   440
    if (k == NULL) {
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   441
      superk = NULL;
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
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diff changeset
   442
    }
1
489c9b5090e2 Initial load
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parents:
diff changeset
   443
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   445
  return superk;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   448
void SystemDictionary::validate_protection_domain(InstanceKlass* klass,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
                                                  Handle class_loader,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
                                                  Handle protection_domain,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
                                                  TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
  if(!has_checkPackageAccess()) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
  // Now we have to call back to java to check if the initating class has access
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
  JavaValue result(T_VOID);
46701
f559541c0daa 8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents: 46689
diff changeset
   456
  LogTarget(Debug, protectiondomain) lt;
f559541c0daa 8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents: 46689
diff changeset
   457
  if (lt.is_enabled()) {
36381
b9ed6bef9364 8149064: TraceProtectionDomainVerification has been converted to Unified Logging.
mockner
parents: 35918
diff changeset
   458
    ResourceMark rm;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
    // Print out trace information
46701
f559541c0daa 8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents: 46689
diff changeset
   460
    LogStream ls(lt);
f559541c0daa 8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents: 46689
diff changeset
   461
    ls.print_cr("Checking package access");
51268
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   462
    if (class_loader() != NULL) {
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   463
      ls.print("class loader: ");
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   464
      class_loader()->print_value_on(&ls);
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   465
    } else {
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   466
      ls.print_cr("class loader: NULL");
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   467
    }
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   468
    if (protection_domain() != NULL) {
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   469
      ls.print(" protection domain: ");
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   470
      protection_domain()->print_value_on(&ls);
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   471
    } else {
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   472
      ls.print_cr(" protection domain: NULL");
4ac20e5f96ce 8202171: Some oopDesc functions compare this with NULL
hseigel
parents: 51180
diff changeset
   473
    }
46701
f559541c0daa 8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents: 46689
diff changeset
   474
    ls.print(" loading: "); klass->print_value_on(&ls);
f559541c0daa 8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents: 46689
diff changeset
   475
    ls.cr();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   478
  // This handle and the class_loader handle passed in keeps this class from
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   479
  // being unloaded through several GC points.
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   480
  // The class_loader handle passed in is the initiating loader.
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   481
  Handle mirror(THREAD, klass->java_mirror());
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   482
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   483
  InstanceKlass* system_loader = SystemDictionary::ClassLoader_klass();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
  JavaCalls::call_special(&result,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
                         class_loader,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
                         system_loader,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   487
                         vmSymbols::checkPackageAccess_name(),
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   488
                         vmSymbols::class_protectiondomain_signature(),
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   489
                         mirror,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
                         protection_domain,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
                         THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
36381
b9ed6bef9364 8149064: TraceProtectionDomainVerification has been converted to Unified Logging.
mockner
parents: 35918
diff changeset
   493
  if (HAS_PENDING_EXCEPTION) {
b9ed6bef9364 8149064: TraceProtectionDomainVerification has been converted to Unified Logging.
mockner
parents: 35918
diff changeset
   494
    log_debug(protectiondomain)("DENIED !!!!!!!!!!!!!!!!!!!!!");
b9ed6bef9364 8149064: TraceProtectionDomainVerification has been converted to Unified Logging.
mockner
parents: 35918
diff changeset
   495
  } else {
b9ed6bef9364 8149064: TraceProtectionDomainVerification has been converted to Unified Logging.
mockner
parents: 35918
diff changeset
   496
   log_debug(protectiondomain)("granted");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
  if (HAS_PENDING_EXCEPTION) return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
  // If no exception has been thrown, we have validated the protection domain
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
  // Insert the protection domain of the initiating class into the set.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
  {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   504
    ClassLoaderData* loader_data = class_loader_data(class_loader);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   505
    Dictionary* dictionary = loader_data->dictionary();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   506
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   507
    Symbol*  kn = klass->name();
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   508
    unsigned int d_hash = dictionary->compute_hash(kn);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
    MutexLocker mu(SystemDictionary_lock, THREAD);
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   511
    int d_index = dictionary->hash_to_index(d_hash);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   512
    dictionary->add_protection_domain(d_index, d_hash, klass,
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   513
                                      protection_domain, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
// We only get here if this thread finds that another thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
// has already claimed the placeholder token for the current operation,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
// but that other thread either never owned or gave up the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
// object lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
// Waits on SystemDictionary_lock to indicate placeholder table updated
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
// On return, caller must recheck placeholder table state
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
// We only get here if
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
//  1) custom classLoader, i.e. not bootstrap classloader
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
   526
//  2) custom classLoader has broken the class loader objectLock
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
//     so another thread got here in parallel
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
// lockObject must be held.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
// Complicated dance due to lock ordering:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
// Must first release the classloader object lock to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
// allow initial definer to complete the class definition
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
// and to avoid deadlock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
// Reclaim classloader lock object with same original recursion count
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
// Must release SystemDictionary_lock after notify, since
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
// class loader lock must be claimed before SystemDictionary_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
// to prevent deadlocks
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
// The notify allows applications that did an untimed wait() on
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
// the classloader object lock to not hang.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
void SystemDictionary::double_lock_wait(Handle lockObject, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
  assert_lock_strong(SystemDictionary_lock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
  bool calledholdinglock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
      = ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD, lockObject);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
  assert(calledholdinglock,"must hold lock for notify");
49658
8237a91c1cca 8199781: Don't use naked == for comparing oops
rkennke
parents: 49641
diff changeset
   547
  assert((!oopDesc::equals(lockObject(), _system_loader_lock_obj) && !is_parallelCapable(lockObject)), "unexpected double_lock_wait");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
  ObjectSynchronizer::notifyall(lockObject, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
  intptr_t recursions =  ObjectSynchronizer::complete_exit(lockObject, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
  SystemDictionary_lock->wait();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  SystemDictionary_lock->unlock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
  ObjectSynchronizer::reenter(lockObject, recursions, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
  SystemDictionary_lock->lock();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
// If the class in is in the placeholder table, class loading is in progress
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
// For cases where the application changes threads to load classes, it
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
// is critical to ClassCircularity detection that we try loading
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
// the superclass on the same thread internally, so we do parallel
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
// super class loading here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
// This also is critical in cases where the original thread gets stalled
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
// even in non-circularity situations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
// Note: must call resolve_super_or_fail even if null super -
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   564
// to force placeholder entry creation for this class for circularity detection
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
// Caller must check for pending exception
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   566
// Returns non-null Klass* if other thread has completed load
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
// and we are done,
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   568
// If return null Klass* and no pending exception, the caller must load the class
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   569
InstanceKlass* SystemDictionary::handle_parallel_super_load(
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   570
    Symbol* name, Symbol* superclassname, Handle class_loader,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
    Handle protection_domain, Handle lockObject, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   573
  ClassLoaderData* loader_data = class_loader_data(class_loader);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   574
  Dictionary* dictionary = loader_data->dictionary();
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   575
  unsigned int d_hash = dictionary->compute_hash(name);
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   576
  unsigned int p_hash = placeholders()->compute_hash(name);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
  int p_index = placeholders()->hash_to_index(p_hash);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
  // superk is not used, resolve_super called for circularity check only
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
  // This code is reached in two situations. One if this thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
  // is loading the same class twice (e.g. ClassCircularity, or
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
  // java.lang.instrument).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
  // The second is if another thread started the resolve_super first
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
  // and has not yet finished.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
  // In both cases the original caller will clean up the placeholder
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
  // entry on error.
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   587
  Klass* superk = SystemDictionary::resolve_super_or_fail(name,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
                                                          superclassname,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
                                                          class_loader,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
                                                          protection_domain,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
                                                          true,
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   592
                                                          CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   594
  // parallelCapable class loaders do NOT wait for parallel superclass loads to complete
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   595
  // Serial class loaders and bootstrap classloader do wait for superclass loads
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   596
 if (!class_loader.is_null() && is_parallelCapable(class_loader)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
    MutexLocker mu(SystemDictionary_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
    // Check if classloading completed while we were loading superclass or waiting
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   599
    return find_class(d_hash, name, dictionary);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
  // must loop to both handle other placeholder updates
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
  // and spurious notifications
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
  bool super_load_in_progress = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
  PlaceholderEntry* placeholder;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
  while (super_load_in_progress) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
    MutexLocker mu(SystemDictionary_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
    // Check if classloading completed while we were loading superclass or waiting
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   609
    InstanceKlass* check = find_class(d_hash, name, dictionary);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
    if (check != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
      // Klass is already loaded, so just return it
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   612
      return check;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
    } else {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   614
      placeholder = placeholders()->get_entry(p_index, p_hash, name, loader_data);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
      if (placeholder && placeholder->super_load_in_progress() ){
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
        // We only get here if the application has released the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
        // classloader lock when another thread was in the middle of loading a
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
        // superclass/superinterface for this class, and now
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
        // this thread is also trying to load this class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
        // To minimize surprises, the first thread that started to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
        // load a class should be the one to complete the loading
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
        // with the classfile it initially expected.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
        // This logic has the current thread wait once it has done
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
        // all the superclass/superinterface loading it can, until
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
        // the original thread completes the class loading or fails
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   626
        // If it completes we will use the resulting InstanceKlass
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
        // which we will find below in the systemDictionary.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
        // We also get here for parallel bootstrap classloader
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
        if (class_loader.is_null()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
          SystemDictionary_lock->wait();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
        } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
          double_lock_wait(lockObject, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
        // If not in SD and not in PH, other thread's load must have failed
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
        super_load_in_progress = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
  }
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   640
  return NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
50113
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
   643
static void post_class_load_event(EventClassLoad* event, const InstanceKlass* k, const ClassLoaderData* init_cld) {
46994
7663ce98384b 8179040: Avoid Ticks::now calls when EventClassLoad is not enabled
redestad
parents: 46747
diff changeset
   644
  assert(event != NULL, "invariant");
7663ce98384b 8179040: Avoid Ticks::now calls when EventClassLoad is not enabled
redestad
parents: 46747
diff changeset
   645
  assert(k != NULL, "invariant");
50113
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
   646
  assert(event->should_commit(), "invariant");
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
   647
  event->set_loadedClass(k);
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
   648
  event->set_definingClassLoader(k->class_loader_data());
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
   649
  event->set_initiatingClassLoader(init_cld);
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
   650
  event->commit();
34666
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
   651
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
40002
156b2dbb0b54 8038332: The trace event vm/class/load is not always being sent
mockner
parents: 39986
diff changeset
   653
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
   654
// Be careful when modifying this code: once you have run
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
   655
// placeholders()->find_and_add(PlaceholderTable::LOAD_INSTANCE),
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
   656
// you need to find_and_remove it before returning.
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
   657
// So be careful to not exit with a CHECK_ macro betweeen these calls.
51329
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   658
//
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   659
// name must be in the form of "java/lang/Object" -- cannot be "Ljava/lang/Object;"
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   660
InstanceKlass* SystemDictionary::resolve_instance_class_or_null(Symbol* name,
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   661
                                                                Handle class_loader,
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   662
                                                                Handle protection_domain,
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   663
                                                                TRAPS) {
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   664
  assert(name != NULL && !FieldType::is_array(name) &&
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   665
         !FieldType::is_obj(name), "invalid class name");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
46994
7663ce98384b 8179040: Avoid Ticks::now calls when EventClassLoad is not enabled
redestad
parents: 46747
diff changeset
   667
  EventClassLoad class_load_start_event;
18025
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17373
diff changeset
   668
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
   669
  HandleMark hm(THREAD);
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
   670
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
  // Fix for 4474172; see evaluation for more details
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
  class_loader = Handle(THREAD, java_lang_ClassLoader::non_reflection_class_loader(class_loader()));
49348
fde3feaaa4ed 8198926: Move ClassLoaderData::_dependencies to ClassLoaderData::_handles
coleenp
parents: 49340
diff changeset
   673
  ClassLoaderData* loader_data = register_loader(class_loader);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   674
  Dictionary* dictionary = loader_data->dictionary();
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   675
  unsigned int d_hash = dictionary->compute_hash(name);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
  // Do lookup to see if class already exist and the protection domain
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
  // has the right access
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   679
  // This call uses find which checks protection domain already matches
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   680
  // All subsequent calls use find_class, and set has_loaded_class so that
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   681
  // before we return a result we call out to java to check for valid protection domain
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   682
  // to allow returning the Klass* and add it to the pd_set if it is valid
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   683
  {
51329
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   684
    InstanceKlass* probe = dictionary->find(d_hash, name, protection_domain);
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   685
    if (probe != NULL) return probe;
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   686
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
  // Non-bootstrap class loaders will call out to class loader and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
  // define via jvm/jni_DefineClass which will acquire the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
  // class loader object lock to protect against multiple threads
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
  // defining the class in parallel by accident.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
  // This lock must be acquired here so the waiter will find
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
  // any successful result in the SystemDictionary and not attempt
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
   694
  // the define.
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
   695
  // ParallelCapable Classloaders and the bootstrap classloader
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
   696
  // do not acquire lock here.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
  bool DoObjectLock = true;
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   698
  if (is_parallelCapable(class_loader)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
    DoObjectLock = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   702
  unsigned int p_hash = placeholders()->compute_hash(name);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
  int p_index = placeholders()->hash_to_index(p_hash);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
  // Class is not in SystemDictionary so we have to do loading.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
  // Make sure we are synchronized on the class loader before we proceed
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
  Handle lockObject = compute_loader_lock_object(class_loader, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
  check_loader_lock_contention(lockObject, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  ObjectLocker ol(lockObject, THREAD, DoObjectLock);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
  // Check again (after locking) if class already exist in SystemDictionary
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
  bool class_has_been_loaded   = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
  bool super_load_in_progress  = false;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
  bool havesupername = false;
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   715
  InstanceKlass* k = NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
  PlaceholderEntry* placeholder;
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   717
  Symbol* superclassname = NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
50735
2f2af62dfac7 8010319: Implementation of JEP 181: Nest-Based Access Control
dholmes
parents: 50634
diff changeset
   719
  assert(THREAD->can_call_java(),
2f2af62dfac7 8010319: Implementation of JEP 181: Nest-Based Access Control
dholmes
parents: 50634
diff changeset
   720
         "can not load classes with compiler thread: class=%s, classloader=%s",
2f2af62dfac7 8010319: Implementation of JEP 181: Nest-Based Access Control
dholmes
parents: 50634
diff changeset
   721
         name->as_C_string(),
2f2af62dfac7 8010319: Implementation of JEP 181: Nest-Based Access Control
dholmes
parents: 50634
diff changeset
   722
         class_loader.is_null() ? "null" : class_loader->klass()->name()->as_C_string());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
    MutexLocker mu(SystemDictionary_lock, THREAD);
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   725
    InstanceKlass* check = find_class(d_hash, name, dictionary);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
    if (check != NULL) {
51329
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   727
      // InstanceKlass is already loaded, so just return it
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
      class_has_been_loaded = true;
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   729
      k = check;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
    } else {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   731
      placeholder = placeholders()->get_entry(p_index, p_hash, name, loader_data);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
      if (placeholder && placeholder->super_load_in_progress()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
         super_load_in_progress = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
         if (placeholder->havesupername() == true) {
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   735
           superclassname = placeholder->supername();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
           havesupername = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
         }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   742
  // If the class is in the placeholder table, class loading is in progress
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
  if (super_load_in_progress && havesupername==true) {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   744
    k = handle_parallel_super_load(name,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   745
                                   superclassname,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   746
                                   class_loader,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   747
                                   protection_domain,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   748
                                   lockObject, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
    if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
      return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
    }
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   752
    if (k != NULL) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
      class_has_been_loaded = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   757
  bool throw_circularity_error = false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
  if (!class_has_been_loaded) {
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   759
    bool load_instance_added = false;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
    // add placeholder entry to record loading instance class
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
    // Five cases:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
    // All cases need to prevent modifying bootclasssearchpath
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
    // in parallel with a classload of same classname
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   765
    // Redefineclasses uses existence of the placeholder for the duration
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   766
    // of the class load to prevent concurrent redefinition of not completely
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   767
    // defined classes.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
    // case 1. traditional classloaders that rely on the classloader object lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
    //   - no other need for LOAD_INSTANCE
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
    // case 2. traditional classloaders that break the classloader object lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
    //    as a deadlock workaround. Detection of this case requires that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
    //    this check is done while holding the classloader object lock,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
    //    and that lock is still held when calling classloader's loadClass.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
    //    For these classloaders, we ensure that the first requestor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
    //    completes the load and other requestors wait for completion.
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
   776
    // case 3. Bootstrap classloader - don't own objectLocker
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
    //    This classloader supports parallelism at the classloader level,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
    //    but only allows a single load of a class/classloader pair.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
    //    No performance benefit and no deadlock issues.
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
   780
    // case 4. parallelCapable user level classloaders - without objectLocker
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   781
    //    Allow parallel classloading of a class/classloader pair
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   782
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
      MutexLocker mu(SystemDictionary_lock, THREAD);
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   785
      if (class_loader.is_null() || !is_parallelCapable(class_loader)) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   786
        PlaceholderEntry* oldprobe = placeholders()->get_entry(p_index, p_hash, name, loader_data);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
        if (oldprobe) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
          // only need check_seen_thread once, not on each loop
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
          // 6341374 java/lang/Instrument with -Xcomp
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
          if (oldprobe->check_seen_thread(THREAD, PlaceholderTable::LOAD_INSTANCE)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
            throw_circularity_error = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
          } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
            // case 1: traditional: should never see load_in_progress.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
            while (!class_has_been_loaded && oldprobe && oldprobe->instance_load_in_progress()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
   796
              // case 3: bootstrap classloader: prevent futile classloading,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
              // wait on first requestor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
              if (class_loader.is_null()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
                SystemDictionary_lock->wait();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
              } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
              // case 2: traditional with broken classloader lock. wait on first
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
              // requestor.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
                double_lock_wait(lockObject, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
              }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
              // Check if classloading completed while we were waiting
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   806
              InstanceKlass* check = find_class(d_hash, name, dictionary);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
              if (check != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
                // Klass is already loaded, so just return it
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   809
                k = check;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
                class_has_been_loaded = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
              }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
              // check if other thread failed to load and cleaned up
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   813
              oldprobe = placeholders()->get_entry(p_index, p_hash, name, loader_data);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
            }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
      }
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   818
      // All cases: add LOAD_INSTANCE holding SystemDictionary_lock
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
   819
      // case 4: parallelCapable: allow competing threads to try
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
      // LOAD_INSTANCE in parallel
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   821
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   822
      if (!throw_circularity_error && !class_has_been_loaded) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   823
        PlaceholderEntry* newprobe = placeholders()->find_and_add(p_index, p_hash, name, loader_data, PlaceholderTable::LOAD_INSTANCE, NULL, THREAD);
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   824
        load_instance_added = true;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
        // For class loaders that do not acquire the classloader object lock,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
        // if they did not catch another thread holding LOAD_INSTANCE,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
        // need a check analogous to the acquire ObjectLocker/find_class
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
        // i.e. now that we hold the LOAD_INSTANCE token on loading this class/CL
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
        // one final check if the load has already completed
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
   830
        // class loaders holding the ObjectLock shouldn't find the class here
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   831
        InstanceKlass* check = find_class(d_hash, name, dictionary);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
        if (check != NULL) {
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   833
        // Klass is already loaded, so return it after checking/adding protection domain
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   834
          k = check;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
          class_has_been_loaded = true;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
    }
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   839
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
    // must throw error outside of owning lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
    if (throw_circularity_error) {
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   842
      assert(!HAS_PENDING_EXCEPTION && load_instance_added == false,"circularity error cleanup");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
      ResourceMark rm(THREAD);
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   844
      THROW_MSG_NULL(vmSymbols::java_lang_ClassCircularityError(), name->as_C_string());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
    if (!class_has_been_loaded) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
      // Do actual loading
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
      k = load_instance_class(name, class_loader, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
      // If everything was OK (no exceptions, no null return value), and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
      // class_loader is NOT the defining loader, do a little more bookkeeping.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   854
      if (!HAS_PENDING_EXCEPTION && k != NULL &&
49658
8237a91c1cca 8199781: Don't use naked == for comparing oops
rkennke
parents: 49641
diff changeset
   855
        !oopDesc::equals(k->class_loader(), class_loader())) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   857
        check_constraints(d_hash, k, class_loader, false, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
        // Need to check for a PENDING_EXCEPTION again; check_constraints
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
        // can throw and doesn't use the CHECK macro.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
        if (!HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
          { // Grabbing the Compile_lock prevents systemDictionary updates
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
            // during compilations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
            MutexLocker mu(Compile_lock, THREAD);
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   865
            update_dictionary(d_hash, p_index, p_hash,
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
   866
              k, class_loader, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
          }
18025
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17373
diff changeset
   868
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
          if (JvmtiExport::should_post_class_load()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
            Thread *thread = THREAD;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
            assert(thread->is_Java_thread(), "thread->is_Java_thread()");
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   872
            JvmtiExport::post_class_load((JavaThread *) thread, k);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
          }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
      }
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   876
    } // load_instance_class
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   877
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   878
    if (load_instance_added == true) {
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   879
      // clean up placeholder entries for LOAD_INSTANCE success or error
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   880
      // This brackets the SystemDictionary updates for both defining
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   881
      // and initiating loaders
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   882
      MutexLocker mu(SystemDictionary_lock, THREAD);
18025
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17373
diff changeset
   883
      placeholders()->find_and_remove(p_index, p_hash, name, loader_data, PlaceholderTable::LOAD_INSTANCE, THREAD);
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17373
diff changeset
   884
      SystemDictionary_lock->notify_all();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   888
  if (HAS_PENDING_EXCEPTION || k == NULL) {
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   889
    return NULL;
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
   890
  }
50113
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
   891
  if (class_load_start_event.should_commit()) {
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
   892
    post_class_load_event(&class_load_start_event, k, loader_data);
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
   893
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
  {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   896
    ClassLoaderData* loader_data = k->class_loader_data();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
    MutexLocker mu(SystemDictionary_lock, THREAD);
51329
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
   898
    InstanceKlass* kk = find_class(name, loader_data);
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   899
    assert(kk == k, "should be present in dictionary");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
  // return if the protection domain in NULL
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   904
  if (protection_domain() == NULL) return k;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
  // Check the protection domain has the right access
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   907
  if (dictionary->is_valid_protection_domain(d_hash, name,
47098
e704f55561c3 8164207: Checking missing load-acquire in relation to _pd_set in dictionary.cpp
coleenp
parents: 46994
diff changeset
   908
                                             protection_domain)) {
e704f55561c3 8164207: Checking missing load-acquire in relation to _pd_set in dictionary.cpp
coleenp
parents: 46994
diff changeset
   909
    return k;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
  // Verify protection domain. If it fails an exception is thrown
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   913
  validate_protection_domain(k, class_loader, protection_domain, CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   915
  return k;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
// This routine does not lock the system dictionary.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
// Since readers don't hold a lock, we must make sure that system
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
// dictionary entries are only removed at a safepoint (when only one
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
// thread is running), and are added to in a safe way (all links must
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
// be updated in an MT-safe manner).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
// Callers should be aware that an entry could be added just after
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
// _dictionary->bucket(index) is read here, so the caller will not see
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
// the new entry.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   930
Klass* SystemDictionary::find(Symbol* class_name,
15847
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   931
                              Handle class_loader,
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   932
                              Handle protection_domain,
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   933
                              TRAPS) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
2020
68d27ca96f33 6790209: server VM fails with assert(will_link,"_new: typeflow responsibility")
kvn
parents: 1550
diff changeset
   935
  // The result of this call should be consistent with the result
68d27ca96f33 6790209: server VM fails with assert(will_link,"_new: typeflow responsibility")
kvn
parents: 1550
diff changeset
   936
  // of the call to resolve_instance_class_or_null().
68d27ca96f33 6790209: server VM fails with assert(will_link,"_new: typeflow responsibility")
kvn
parents: 1550
diff changeset
   937
  // See evaluation 6790209 and 4474172 for more details.
68d27ca96f33 6790209: server VM fails with assert(will_link,"_new: typeflow responsibility")
kvn
parents: 1550
diff changeset
   938
  class_loader = Handle(THREAD, java_lang_ClassLoader::non_reflection_class_loader(class_loader()));
15847
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   939
  ClassLoaderData* loader_data = ClassLoaderData::class_loader_data_or_null(class_loader());
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   940
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   941
  if (loader_data == NULL) {
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   942
    // If the ClassLoaderData has not been setup,
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   943
    // then the class loader has no entries in the dictionary.
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   944
    return NULL;
f9ce2cd20dee 8008549: NPG: SystemDictionary::find(...) unnecessarily keeps class loaders alive
stefank
parents: 15432
diff changeset
   945
  }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   946
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   947
  Dictionary* dictionary = loader_data->dictionary();
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   948
  unsigned int d_hash = dictionary->compute_hash(class_name);
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
   949
  return dictionary->find(d_hash, class_name,
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
   950
                          protection_domain);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
// Look for a loaded instance or array klass by name.  Do not do any loading.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
// return NULL in case of error.
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   956
Klass* SystemDictionary::find_instance_or_array_klass(Symbol* class_name,
13952
e3cf184080bc 8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents: 13753
diff changeset
   957
                                                      Handle class_loader,
e3cf184080bc 8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents: 13753
diff changeset
   958
                                                      Handle protection_domain,
e3cf184080bc 8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents: 13753
diff changeset
   959
                                                      TRAPS) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
   960
  Klass* k = NULL;
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   961
  assert(class_name != NULL, "class name must be non NULL");
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
   962
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   963
  if (FieldType::is_array(class_name)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
    // The name refers to an array.  Parse the name.
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   965
    // dimension and object_key in FieldArrayInfo are assigned as a
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   966
    // side-effect of this call
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   967
    FieldArrayInfo fd;
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   968
    BasicType t = FieldType::get_array_info(class_name, fd, CHECK_(NULL));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
    if (t != T_OBJECT) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
      k = Universe::typeArrayKlassObj(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
    } else {
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
   972
      k = SystemDictionary::find(fd.object_key(), class_loader, protection_domain, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
    if (k != NULL) {
14488
ab48109f7d1b 8001471: Klass::cast() does nothing
hseigel
parents: 14077
diff changeset
   975
      k = k->array_klass_or_null(fd.dimension());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
    k = find(class_name, class_loader, protection_domain, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
  return k;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
// Note: this method is much like resolve_from_stream, but
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
   984
// does not publish the classes via the SystemDictionary.
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
   985
// Handles unsafe_DefineAnonymousClass and redefineclasses
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
   986
// RedefinedClasses do not add to the class hierarchy
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   987
InstanceKlass* SystemDictionary::parse_stream(Symbol* class_name,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   988
                                              Handle class_loader,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   989
                                              Handle protection_domain,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   990
                                              ClassFileStream* st,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   991
                                              const InstanceKlass* host_klass,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   992
                                              GrowableArray<Handle>* cp_patches,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
   993
                                              TRAPS) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
46994
7663ce98384b 8179040: Avoid Ticks::now calls when EventClassLoad is not enabled
redestad
parents: 46747
diff changeset
   995
  EventClassLoad class_load_start_event;
18025
b7bcf7497f93 8005849: JEP 167: Event-Based JVM Tracing
sla
parents: 17373
diff changeset
   996
14588
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
   997
  ClassLoaderData* loader_data;
34666
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
   998
  if (host_klass != NULL) {
14588
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
   999
    // Create a new CLD for anonymous class, that uses the same class loader
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  1000
    // as the host_klass
49658
8237a91c1cca 8199781: Don't use naked == for comparing oops
rkennke
parents: 49641
diff changeset
  1001
    guarantee(oopDesc::equals(host_klass->class_loader(), class_loader()), "should be the same");
49348
fde3feaaa4ed 8198926: Move ClassLoaderData::_dependencies to ClassLoaderData::_handles
coleenp
parents: 49340
diff changeset
  1002
    loader_data = ClassLoaderData::anonymous_class_loader_data(class_loader);
14588
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  1003
  } else {
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  1004
    loader_data = ClassLoaderData::class_loader_data(class_loader());
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  1005
  }
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  1006
34666
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1007
  assert(st != NULL, "invariant");
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1008
  assert(st->need_verify(), "invariant");
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1009
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1010
  // Parse stream and create a klass.
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1011
  // Note that we do this even though this klass might
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
  // already be present in the SystemDictionary, otherwise we would not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
  // throw potential ClassFormatErrors.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1015
  InstanceKlass* k = KlassFactory::create_from_stream(st,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1016
                                                      class_name,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1017
                                                      loader_data,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1018
                                                      protection_domain,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1019
                                                      host_klass,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1020
                                                      cp_patches,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1021
                                                      CHECK_NULL);
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1022
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1023
  if (host_klass != NULL && k != NULL) {
49738
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  1024
    // Anonymous classes must update ClassLoaderData holder (was host_klass loader)
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  1025
    // so that they can be unloaded when the mirror is no longer referenced.
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  1026
    k->class_loader_data()->initialize_holder(Handle(THREAD, k->java_mirror()));
1550
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1027
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1028
    {
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1029
      MutexLocker mu_r(Compile_lock, THREAD);
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1030
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1031
      // Add to class hierarchy, initialize vtables, and do possible
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1032
      // deoptimizations.
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1033
      add_to_hierarchy(k, CHECK_NULL); // No exception, but can block
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1034
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1035
      // But, do not add to dictionary.
22231
1cca24bb3125 8029383: assert(counter_changed) failed: failed dependencies, but counter didn't change
roland
parents: 21767
diff changeset
  1036
1cca24bb3125 8029383: assert(counter_changed) failed: failed dependencies, but counter didn't change
roland
parents: 21767
diff changeset
  1037
      // compiled code dependencies need to be validated anyway
1cca24bb3125 8029383: assert(counter_changed) failed: failed dependencies, but counter didn't change
roland
parents: 21767
diff changeset
  1038
      notice_modification();
1550
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1039
    }
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1040
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1041
    // Rewrite and patch constant pool here.
14588
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  1042
    k->link_class(CHECK_NULL);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1043
    if (cp_patches != NULL) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1044
      k->constants()->patch_resolved_references(cp_patches);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1045
    }
49738
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  1046
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  1047
    // If it's anonymous, initialize it now, since nobody else will.
14588
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  1048
    k->eager_initialize(CHECK_NULL);
1550
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1049
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1050
    // notify jvmti
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1051
    if (JvmtiExport::should_post_class_load()) {
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1052
        assert(THREAD->is_Java_thread(), "thread->is_Java_thread()");
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1053
        JvmtiExport::post_class_load((JavaThread *) THREAD, k);
1550
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1054
    }
50113
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1055
    if (class_load_start_event.should_commit()) {
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1056
      post_class_load_event(&class_load_start_event, k, loader_data);
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1057
    }
1550
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1058
  }
34666
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1059
  assert(host_klass != NULL || NULL == cp_patches,
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1060
         "cp_patches only found with host_klass");
1550
be2fc37a817f 6653858: dynamic languages need to be able to load anonymous classes
jrose
parents: 670
diff changeset
  1061
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1062
  return k;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
// Add a klass to the system from a stream (called by jni_DefineClass and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
// JVM_DefineClass).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
// Note: class_name can be NULL. In that case we do not know the name of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
// the class until we have parsed the stream.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1070
InstanceKlass* SystemDictionary::resolve_from_stream(Symbol* class_name,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1071
                                                     Handle class_loader,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1072
                                                     Handle protection_domain,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1073
                                                     ClassFileStream* st,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1074
                                                     TRAPS) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  1076
  HandleMark hm(THREAD);
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  1077
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1078
  // Classloaders that support parallelism, e.g. bootstrap classloader,
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1079
  // do not acquire lock here
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1080
  bool DoObjectLock = true;
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1081
  if (is_parallelCapable(class_loader)) {
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1082
    DoObjectLock = false;
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1083
  }
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1084
49348
fde3feaaa4ed 8198926: Move ClassLoaderData::_dependencies to ClassLoaderData::_handles
coleenp
parents: 49340
diff changeset
  1085
  ClassLoaderData* loader_data = register_loader(class_loader);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1086
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1087
  // Make sure we are synchronized on the class loader before we proceed
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
  Handle lockObject = compute_loader_lock_object(class_loader, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
  check_loader_lock_contention(lockObject, THREAD);
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1090
  ObjectLocker ol(lockObject, THREAD, DoObjectLock);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
34666
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1092
  assert(st != NULL, "invariant");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
34666
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1094
  // Parse the stream and create a klass.
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1095
  // Note that we do this even though this klass might
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
  // already be present in the SystemDictionary, otherwise we would not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
  // throw potential ClassFormatErrors.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1098
 InstanceKlass* k = NULL;
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1099
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1100
#if INCLUDE_CDS
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1101
  if (!DumpSharedSpaces) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1102
    k = SystemDictionaryShared::lookup_from_stream(class_name,
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1103
                                                   class_loader,
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1104
                                                   protection_domain,
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1105
                                                   st,
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1106
                                                   CHECK_NULL);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1107
  }
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1108
#endif
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1109
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1110
  if (k == NULL) {
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1111
    if (st->buffer() == NULL) {
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1112
      return NULL;
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1113
    }
34666
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1114
    k = KlassFactory::create_from_stream(st,
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1115
                                         class_name,
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1116
                                         loader_data,
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1117
                                         protection_domain,
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1118
                                         NULL, // host_klass
1c7168ea0034 8140485: Class load and creation cleanup
mgronlun
parents: 34317
diff changeset
  1119
                                         NULL, // cp_patches
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1120
                                         CHECK_NULL);
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1121
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1123
  assert(k != NULL, "no klass created");
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1124
  Symbol* h_name = k->name();
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1125
  assert(class_name == NULL || class_name == h_name, "name mismatch");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1127
  // Add class just loaded
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1128
  // If a class loader supports parallel classloading handle parallel define requests
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1129
  // find_or_define_instance_class may return a different InstanceKlass
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1130
  if (is_parallelCapable(class_loader)) {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1131
    InstanceKlass* defined_k = find_or_define_instance_class(h_name, class_loader, k, THREAD);
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1132
    if (!HAS_PENDING_EXCEPTION && defined_k != k) {
43948
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1133
      // If a parallel capable class loader already defined this class, register 'k' for cleanup.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1134
      assert(defined_k != NULL, "Should have a klass if there's no exception");
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1135
      loader_data->add_to_deallocate_list(k);
43948
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1136
      k = defined_k;
42650
1f304d0c888b 8171008: Integrate AOT compiler into JDK
kvn
parents: 42639
diff changeset
  1137
    }
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1138
  } else {
43948
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1139
    define_instance_class(k, THREAD);
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1140
  }
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1141
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1142
  // If defining the class throws an exception register 'k' for cleanup.
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1143
  if (HAS_PENDING_EXCEPTION) {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1144
    assert(k != NULL, "Must have an instance klass here!");
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1145
    loader_data->add_to_deallocate_list(k);
43948
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1146
    return NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
  1149
  // Make sure we have an entry in the SystemDictionary on success
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
  debug_only( {
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1151
    MutexLocker mu(SystemDictionary_lock, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1153
    Klass* check = find_class(h_name, k->class_loader_data());
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1154
    assert(check == k, "should be present in the dictionary");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
  } );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1157
  return k;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1160
#if INCLUDE_CDS
13195
be27e1b6a4b9 6995781: Native Memory Tracking (Phase 1)
zgu
parents: 12772
diff changeset
  1161
void SystemDictionary::set_shared_dictionary(HashtableBucket<mtClass>* t, int length,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
                                             int number_of_entries) {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1163
  assert(length == _shared_dictionary_size * sizeof(HashtableBucket<mtClass>),
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
         "bad shared dictionary size.");
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1165
  _shared_dictionary = new Dictionary(ClassLoaderData::the_null_class_loader_data(),
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1166
                                      _shared_dictionary_size, t, number_of_entries);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
// If there is a shared dictionary, then find the entry for the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
// given shared system class, if any.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1173
InstanceKlass* SystemDictionary::find_shared_class(Symbol* class_name) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
  if (shared_dictionary() != NULL) {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1175
    unsigned int d_hash = shared_dictionary()->compute_hash(class_name);
11628
13155c0c00b4 7114376: Make system dictionary hashtable bucket array size configurable
acorn
parents: 11480
diff changeset
  1176
    int d_index = shared_dictionary()->hash_to_index(d_hash);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1177
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
    return shared_dictionary()->find_shared_class(d_index, d_hash, class_name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
// Load a class from the shared spaces (found through the shared system
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
// dictionary).  Force the superclass and all interfaces to be loaded.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
// Update the class definition to include sibling classes and no
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
// subclasses (yet).  [Classes in the shared space are not part of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
// object hierarchy until loaded.]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1191
InstanceKlass* SystemDictionary::load_shared_class(
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  1192
                 Symbol* class_name, Handle class_loader, TRAPS) {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1193
  InstanceKlass* ik = find_shared_class(class_name);
41182
dbd59c1da636 8078644: CDS needs to support JVMTI CFLH
jiangli
parents: 40923
diff changeset
  1194
  // Make sure we only return the boot class for the NULL classloader.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1195
  if (ik != NULL &&
41182
dbd59c1da636 8078644: CDS needs to support JVMTI CFLH
jiangli
parents: 40923
diff changeset
  1196
      ik->is_shared_boot_class() && class_loader.is_null()) {
dbd59c1da636 8078644: CDS needs to support JVMTI CFLH
jiangli
parents: 40923
diff changeset
  1197
    Handle protection_domain;
dbd59c1da636 8078644: CDS needs to support JVMTI CFLH
jiangli
parents: 40923
diff changeset
  1198
    return load_shared_class(ik, class_loader, protection_domain, THREAD);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1199
  }
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1200
  return NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1203
// Check if a shared class can be loaded by the specific classloader:
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1204
//
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1205
// NULL classloader:
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1206
//   - Module class from "modules" jimage. ModuleEntry must be defined in the classloader.
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1207
//   - Class from -Xbootclasspath/a. The class has no defined PackageEntry, or must
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1208
//     be defined in an unnamed module.
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1209
bool SystemDictionary::is_shared_class_visible(Symbol* class_name,
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1210
                                               InstanceKlass* ik,
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1211
                                               Handle class_loader, TRAPS) {
42876
ff8ff9dcccec 8168797: do not load any archived classes from a patched module
jiangli
parents: 42650
diff changeset
  1212
  assert(!ModuleEntryTable::javabase_moduleEntry()->is_patched(),
ff8ff9dcccec 8168797: do not load any archived classes from a patched module
jiangli
parents: 42650
diff changeset
  1213
         "Cannot use sharing if java.base is patched");
39216
40c3d66352ae 8153858: Clean up needed when obtaining the package name from a fully qualified class name
rprotacio
parents: 38709
diff changeset
  1214
  ResourceMark rm;
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1215
  int path_index = ik->shared_classpath_index();
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1216
  ClassLoaderData* loader_data = class_loader_data(class_loader);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1217
  if (path_index < 0) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1218
    // path_index < 0 indicates that the class is intended for a custom loader
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1219
    // and should not be loaded by boot/platform/app loaders
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1220
    if (loader_data->is_builtin_class_loader_data()) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1221
      return false;
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1222
    } else {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1223
      return true;
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1224
    }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1225
  }
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1226
  SharedClassPathEntry* ent =
49739
00805b129186 8194812: Extend class-data sharing to support the module path
ccheung
parents: 49738
diff changeset
  1227
            (SharedClassPathEntry*)FileMapInfo::shared_path(path_index);
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1228
  if (!Universe::is_module_initialized()) {
47673
6126617b8508 8185160: -XX:DumpLoadedClassList omits graal classes
iklam
parents: 47614
diff changeset
  1229
    assert(ent != NULL && ent->is_modules_image(),
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1230
           "Loading non-bootstrap classes before the module system is initialized");
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1231
    assert(class_loader.is_null(), "sanity");
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1232
    return true;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1233
  }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1234
  // Get the pkg_entry from the classloader
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1235
  TempNewSymbol pkg_name = NULL;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1236
  PackageEntry* pkg_entry = NULL;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1237
  ModuleEntry* mod_entry = NULL;
39216
40c3d66352ae 8153858: Clean up needed when obtaining the package name from a fully qualified class name
rprotacio
parents: 38709
diff changeset
  1238
  const char* pkg_string = NULL;
40c3d66352ae 8153858: Clean up needed when obtaining the package name from a fully qualified class name
rprotacio
parents: 38709
diff changeset
  1239
  pkg_name = InstanceKlass::package_from_name(class_name, CHECK_false);
40c3d66352ae 8153858: Clean up needed when obtaining the package name from a fully qualified class name
rprotacio
parents: 38709
diff changeset
  1240
  if (pkg_name != NULL) {
40c3d66352ae 8153858: Clean up needed when obtaining the package name from a fully qualified class name
rprotacio
parents: 38709
diff changeset
  1241
    pkg_string = pkg_name->as_C_string();
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1242
    if (loader_data != NULL) {
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1243
      pkg_entry = loader_data->packages()->lookup_only(pkg_name);
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1244
    }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1245
    if (pkg_entry != NULL) {
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1246
      mod_entry = pkg_entry->module();
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1247
    }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1248
  }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1249
42876
ff8ff9dcccec 8168797: do not load any archived classes from a patched module
jiangli
parents: 42650
diff changeset
  1250
  // If the archived class is from a module that has been patched at runtime,
ff8ff9dcccec 8168797: do not load any archived classes from a patched module
jiangli
parents: 42650
diff changeset
  1251
  // the class cannot be loaded from the archive.
ff8ff9dcccec 8168797: do not load any archived classes from a patched module
jiangli
parents: 42650
diff changeset
  1252
  if (mod_entry != NULL && mod_entry->is_patched()) {
ff8ff9dcccec 8168797: do not load any archived classes from a patched module
jiangli
parents: 42650
diff changeset
  1253
    return false;
ff8ff9dcccec 8168797: do not load any archived classes from a patched module
jiangli
parents: 42650
diff changeset
  1254
  }
ff8ff9dcccec 8168797: do not load any archived classes from a patched module
jiangli
parents: 42650
diff changeset
  1255
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1256
  if (class_loader.is_null()) {
41739
4a4b9f6a4306 8167333: Invalid source path info might be used when creating ClassFileStream after CFLH transforms a shared classes in some cases
jiangli
parents: 41182
diff changeset
  1257
    assert(ent != NULL, "Shared class for NULL classloader must have valid SharedClassPathEntry");
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1258
    // The NULL classloader can load archived class originated from the
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1259
    // "modules" jimage and the -Xbootclasspath/a. For class from the
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1260
    // "modules" jimage, the PackageEntry/ModuleEntry must be defined
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1261
    // by the NULL classloader.
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1262
    if (mod_entry != NULL) {
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1263
      // PackageEntry/ModuleEntry is found in the classloader. Check if the
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1264
      // ModuleEntry's location agrees with the archived class' origination.
47673
6126617b8508 8185160: -XX:DumpLoadedClassList omits graal classes
iklam
parents: 47614
diff changeset
  1265
      if (ent->is_modules_image() && mod_entry->location()->starts_with("jrt:")) {
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1266
        return true; // Module class from the "module" jimage
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1267
      }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1268
    }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1269
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1270
    // If the archived class is not from the "module" jimage, the class can be
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1271
    // loaded by the NULL classloader if
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1272
    //
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1273
    // 1. the class is from the unamed package
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1274
    // 2. or, the class is not from a module defined in the NULL classloader
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1275
    // 3. or, the class is from an unamed module
47673
6126617b8508 8185160: -XX:DumpLoadedClassList omits graal classes
iklam
parents: 47614
diff changeset
  1276
    if (!ent->is_modules_image() && ik->is_shared_boot_class()) {
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1277
      // the class is from the -Xbootclasspath/a
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1278
      if (pkg_string == NULL ||
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1279
          pkg_entry == NULL ||
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1280
          pkg_entry->in_unnamed_module()) {
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1281
        assert(mod_entry == NULL ||
46387
c46632622b17 8176472: Lazily create ModuleEntryTable
rprotacio
parents: 46380
diff changeset
  1282
               mod_entry == loader_data->unnamed_module(),
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1283
               "the unnamed module is not defined in the classloader");
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1284
        return true;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1285
      }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1286
    }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1287
    return false;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1288
  } else {
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1289
    bool res = SystemDictionaryShared::is_shared_class_visible_for_classloader(
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1290
              ik, class_loader, pkg_string, pkg_name,
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1291
              pkg_entry, mod_entry, CHECK_(false));
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1292
    return res;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1293
  }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1294
}
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1295
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1296
InstanceKlass* SystemDictionary::load_shared_class(InstanceKlass* ik,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1297
                                                   Handle class_loader,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1298
                                                   Handle protection_domain, TRAPS) {
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1299
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1300
  if (ik != NULL) {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1301
    Symbol* class_name = ik->name();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1302
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1303
    bool visible = is_shared_class_visible(
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1304
                            class_name, ik, class_loader, CHECK_NULL);
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1305
    if (!visible) {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1306
      return NULL;
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1307
    }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1308
38709
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1309
    // Resolve the superclass and interfaces. They must be the same
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1310
    // as in dump time, because the layout of <ik> depends on
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1311
    // the specific layout of ik->super() and ik->local_interfaces().
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1312
    //
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1313
    // If unexpected superclass or interfaces are found, we cannot
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1314
    // load <ik> from the shared archive.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1315
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1316
    if (ik->super() != NULL) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1317
      Symbol*  cn = ik->super()->name();
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1318
      Klass *s = resolve_super_or_fail(class_name, cn,
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1319
                                       class_loader, protection_domain, true, CHECK_NULL);
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1320
      if (s != ik->super()) {
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1321
        // The dynamically resolved super class is not the same as the one we used during dump time,
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1322
        // so we cannot use ik.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1323
        return NULL;
38709
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1324
      } else {
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1325
        assert(s->is_shared(), "must be");
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1326
      }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1327
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1328
51329
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
  1329
    Array<InstanceKlass*>* interfaces = ik->local_interfaces();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1330
    int num_interfaces = interfaces->length();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1331
    for (int index = 0; index < num_interfaces; index++) {
51329
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
  1332
      InstanceKlass* k = interfaces->at(index);
9c68699bebe5 8208999: Some use of Klass* should be replaced by InstanceKlass*
iklam
parents: 51268
diff changeset
  1333
      Symbol* name  = k->name();
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1334
      Klass* i = resolve_super_or_fail(class_name, name, class_loader, protection_domain, false, CHECK_NULL);
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1335
      if (k != i) {
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1336
        // The dynamically resolved interface class is not the same as the one we used during dump time,
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1337
        // so we cannot use ik.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1338
        return NULL;
38709
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1339
      } else {
835ea8e8b295 8145247: incorrect comment in SystemDictionary::load_shared_class
iklam
parents: 38658
diff changeset
  1340
        assert(i->is_shared(), "must be");
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33612
diff changeset
  1341
      }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1342
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1343
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1344
    InstanceKlass* new_ik = KlassFactory::check_shared_class_file_load_hook(
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1345
        ik, class_name, class_loader, protection_domain, CHECK_NULL);
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1346
    if (new_ik != NULL) {
41182
dbd59c1da636 8078644: CDS needs to support JVMTI CFLH
jiangli
parents: 40923
diff changeset
  1347
      // The class is changed by CFLH. Return the new class. The shared class is
dbd59c1da636 8078644: CDS needs to support JVMTI CFLH
jiangli
parents: 40923
diff changeset
  1348
      // not used.
dbd59c1da636 8078644: CDS needs to support JVMTI CFLH
jiangli
parents: 40923
diff changeset
  1349
      return new_ik;
dbd59c1da636 8078644: CDS needs to support JVMTI CFLH
jiangli
parents: 40923
diff changeset
  1350
    }
dbd59c1da636 8078644: CDS needs to support JVMTI CFLH
jiangli
parents: 40923
diff changeset
  1351
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1352
    // Adjust methods to recover missing data.  They need addresses for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1353
    // interpreter entry points and their default native method address
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1354
    // must be reset.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1355
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
    // Updating methods must be done under a lock so multiple
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
    // threads don't update these in parallel
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1358
    //
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1359
    // Shared classes are all currently loaded by either the bootstrap or
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1360
    // internal parallel class loaders, so this will never cause a deadlock
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1361
    // on a custom class loader lock.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1362
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1363
    ClassLoaderData* loader_data = ClassLoaderData::class_loader_data(class_loader());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1364
    {
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  1365
      HandleMark hm(THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1366
      Handle lockObject = compute_loader_lock_object(class_loader, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1367
      check_loader_lock_contention(lockObject, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1368
      ObjectLocker ol(lockObject, THREAD, true);
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1369
      // prohibited package check assumes all classes loaded from archive call
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1370
      // restore_unshareable_info which calls ik->set_package()
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1371
      ik->restore_unshareable_info(loader_data, protection_domain, CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1372
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1373
46444
677be3444372 8154791: Xlog classload too redundant msgs info/debug
rprotacio
parents: 46435
diff changeset
  1374
    ik->print_class_load_logging(loader_data, NULL, NULL);
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1375
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1376
    // For boot loader, ensure that GetSystemPackage knows that a class in this
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1377
    // package was loaded.
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1378
    if (class_loader.is_null()) {
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1379
      int path_index = ik->shared_classpath_index();
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1380
      ResourceMark rm;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1381
      ClassLoader::add_package(ik->name()->as_C_string(), path_index, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
    }
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1383
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1384
    if (DumpLoadedClassList != NULL && classlist_file->is_open()) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1385
      // Only dump the classes that can be stored into CDS archive
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1386
      if (SystemDictionaryShared::is_sharing_possible(loader_data)) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1387
        ResourceMark rm(THREAD);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1388
        classlist_file->print_cr("%s", ik->name()->as_C_string());
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1389
        classlist_file->flush();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1390
      }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1391
    }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1392
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1393
    // notify a class loaded from shared object
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1394
    ClassLoadingService::notify_class_loaded(ik, true /* shared class */);
51070
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1395
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1396
    ik->set_has_passed_fingerprint_check(false);
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1397
    if (UseAOT && ik->supers_have_passed_fingerprint_checks()) {
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1398
      uint64_t aot_fp = AOTLoader::get_saved_fingerprint(ik);
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1399
      uint64_t cds_fp = ik->get_stored_fingerprint();
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1400
      if (aot_fp != 0 && aot_fp == cds_fp) {
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1401
        // This class matches with a class saved in an AOT library
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1402
        ik->set_has_passed_fingerprint_check(true);
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1403
      } else {
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1404
        ResourceMark rm;
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1405
        log_info(class, fingerprint)("%s :  expected = " PTR64_FORMAT " actual = " PTR64_FORMAT, ik->external_name(), aot_fp, cds_fp);
2f4c3cac8556 8206977: Minor improvements of runtime code.
goetz
parents: 50771
diff changeset
  1406
      }
42650
1f304d0c888b 8171008: Integrate AOT compiler into JDK
kvn
parents: 42639
diff changeset
  1407
    }
1f304d0c888b 8171008: Integrate AOT compiler into JDK
kvn
parents: 42639
diff changeset
  1408
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
  return ik;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
}
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1411
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1412
void SystemDictionary::clear_invoke_method_table() {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1413
  SymbolPropertyEntry* spe = NULL;
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1414
  for (int index = 0; index < _invoke_method_table->table_size(); index++) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1415
    SymbolPropertyEntry* p = _invoke_method_table->bucket(index);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1416
    while (p != NULL) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1417
      spe = p;
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1418
      p = p->next();
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1419
      _invoke_method_table->free_entry(spe);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1420
    }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1421
  }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1422
}
26419
25abc4a3285c 8056971: Minor class loading clean-up
iklam
parents: 26181
diff changeset
  1423
#endif // INCLUDE_CDS
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1424
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1425
InstanceKlass* SystemDictionary::load_instance_class(Symbol* class_name, Handle class_loader, TRAPS) {
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1426
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1427
  if (class_loader.is_null()) {
39216
40c3d66352ae 8153858: Clean up needed when obtaining the package name from a fully qualified class name
rprotacio
parents: 38709
diff changeset
  1428
    ResourceMark rm;
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1429
    PackageEntry* pkg_entry = NULL;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1430
    bool search_only_bootloader_append = false;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1431
    ClassLoaderData *loader_data = class_loader_data(class_loader);
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1432
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1433
    // Find the package in the boot loader's package entry table.
39216
40c3d66352ae 8153858: Clean up needed when obtaining the package name from a fully qualified class name
rprotacio
parents: 38709
diff changeset
  1434
    TempNewSymbol pkg_name = InstanceKlass::package_from_name(class_name, CHECK_NULL);
40c3d66352ae 8153858: Clean up needed when obtaining the package name from a fully qualified class name
rprotacio
parents: 38709
diff changeset
  1435
    if (pkg_name != NULL) {
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1436
      pkg_entry = loader_data->packages()->lookup_only(pkg_name);
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1437
    }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1438
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1439
    // Prior to attempting to load the class, enforce the boot loader's
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1440
    // visibility boundaries.
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1441
    if (!Universe::is_module_initialized()) {
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1442
      // During bootstrapping, prior to module initialization, any
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1443
      // class attempting to be loaded must be checked against the
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1444
      // java.base packages in the boot loader's PackageEntryTable.
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1445
      // No class outside of java.base is allowed to be loaded during
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1446
      // this bootstrapping window.
47991
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1447
      if (pkg_entry == NULL || pkg_entry->in_unnamed_module()) {
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1448
        // Class is either in the unnamed package or in
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1449
        // a named package within the unnamed module.  Either
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1450
        // case is outside of java.base, do not attempt to
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1451
        // load the class post java.base definition.  If
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1452
        // java.base has not been defined, let the class load
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1453
        // and its package will be checked later by
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1454
        // ModuleEntryTable::verify_javabase_packages.
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1455
        if (ModuleEntryTable::javabase_defined()) {
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1456
          return NULL;
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1457
        }
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1458
      } else {
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1459
        // Check that the class' package is defined within java.base.
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1460
        ModuleEntry* mod_entry = pkg_entry->module();
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1461
        Symbol* mod_entry_name = mod_entry->name();
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1462
        if (mod_entry_name->fast_compare(vmSymbols::java_base()) != 0) {
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1463
          return NULL;
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1464
        }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1465
      }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1466
    } else {
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1467
      // After the module system has been initialized, check if the class'
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1468
      // package is in a module defined to the boot loader.
39216
40c3d66352ae 8153858: Clean up needed when obtaining the package name from a fully qualified class name
rprotacio
parents: 38709
diff changeset
  1469
      if (pkg_name == NULL || pkg_entry == NULL || pkg_entry->in_unnamed_module()) {
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1470
        // Class is either in the unnamed package, in a named package
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1471
        // within a module not defined to the boot loader or in a
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1472
        // a named package within the unnamed module.  In all cases,
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1473
        // limit visibility to search for the class only in the boot
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1474
        // loader's append path.
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1475
        search_only_bootloader_append = true;
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1476
      }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1477
    }
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1478
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1479
    // Prior to bootstrapping's module initialization, never load a class outside
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1480
    // of the boot loader's module path
47991
a474466c4fdb 8187118: Remove appending -cp path to the boot class path at AppCDS dump time
jiangli
parents: 47774
diff changeset
  1481
    assert(Universe::is_module_initialized() ||
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1482
           !search_only_bootloader_append,
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  1483
           "Attempt to load a class outside of boot loader's module path");
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1484
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1485
    // Search the shared system dictionary for classes preloaded into the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1486
    // shared spaces.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1487
    InstanceKlass* k = NULL;
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1488
    {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1489
#if INCLUDE_CDS
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1490
      PerfTraceTime vmtimer(ClassLoader::perf_shared_classload_time());
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1491
      k = load_shared_class(class_name, class_loader, THREAD);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1492
#endif
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1493
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1494
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1495
    if (k == NULL) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
      // Use VM class loader
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1497
      PerfTraceTime vmtimer(ClassLoader::perf_sys_classload_time());
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1498
      k = ClassLoader::load_class(class_name, search_only_bootloader_append, CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1499
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1500
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1501
    // find_or_define_instance_class may return a different InstanceKlass
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1502
    if (k != NULL) {
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1503
      InstanceKlass* defined_k =
43948
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1504
        find_or_define_instance_class(class_name, class_loader, k, THREAD);
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1505
      if (!HAS_PENDING_EXCEPTION && defined_k != k) {
43948
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1506
        // If a parallel capable class loader already defined this class, register 'k' for cleanup.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1507
        assert(defined_k != NULL, "Should have a klass if there's no exception");
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1508
        loader_data->add_to_deallocate_list(k);
43948
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1509
        k = defined_k;
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1510
      } else if (HAS_PENDING_EXCEPTION) {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1511
        loader_data->add_to_deallocate_list(k);
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1512
        return NULL;
43948
26f3c55e246e 8173743: Failures during class definition can lead to memory leaks in metaspace
simonis
parents: 42876
diff changeset
  1513
      }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1514
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
    return k;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
    // Use user specified class loader to load class. Call loadClass operation on class_loader.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
    ResourceMark rm(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1519
3575
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1520
    assert(THREAD->is_Java_thread(), "must be a JavaThread");
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1521
    JavaThread* jt = (JavaThread*) THREAD;
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1522
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1523
    PerfClassTraceTime vmtimer(ClassLoader::perf_app_classload_time(),
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1524
                               ClassLoader::perf_app_classload_selftime(),
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1525
                               ClassLoader::perf_app_classload_count(),
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1526
                               jt->get_thread_stat()->perf_recursion_counts_addr(),
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1527
                               jt->get_thread_stat()->perf_timers_addr(),
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1528
                               PerfClassTraceTime::CLASS_LOAD);
224791e7ecab 6857194: Add hotspot perf counters to aid class loading performance measurement
mchung
parents: 2570
diff changeset
  1529
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1530
    Handle s = java_lang_String::create_from_symbol(class_name, CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1531
    // Translate to external class name format, i.e., convert '/' chars to '.'
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1532
    Handle string = java_lang_String::externalize_classname(s, CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
    JavaValue result(T_OBJECT);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1535
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1536
    InstanceKlass* spec_klass = SystemDictionary::ClassLoader_klass();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1537
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1538
    // Call public unsynchronized loadClass(String) directly for all class loaders.
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1539
    // For parallelCapable class loaders, JDK >=7, loadClass(String, boolean) will
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1540
    // acquire a class-name based lock rather than the class loader object lock.
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1541
    // JDK < 7 already acquire the class loader lock in loadClass(String, boolean).
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1542
    JavaCalls::call_virtual(&result,
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1543
                            class_loader,
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1544
                            spec_klass,
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1545
                            vmSymbols::loadClass_name(),
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1546
                            vmSymbols::string_class_signature(),
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1547
                            string,
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1548
                            CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
    assert(result.get_type() == T_OBJECT, "just checking");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
    oop obj = (oop) result.get_jobject();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
    // Primitive classes return null since forName() can not be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
    // used to obtain any of the Class objects representing primitives or void
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
    if ((obj != NULL) && !(java_lang_Class::is_primitive(obj))) {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1556
      InstanceKlass* k = InstanceKlass::cast(java_lang_Class::as_Klass(obj));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1557
      // For user defined Java class loaders, check that the name returned is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1558
      // the same as that requested.  This check is done for the bootstrap
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1559
      // loader when parsing the class file.
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  1560
      if (class_name == k->name()) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1561
        return k;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1562
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1563
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1564
    // Class is not found or has the wrong name, return NULL
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1565
    return NULL;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1566
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1568
50113
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1569
static void post_class_define_event(InstanceKlass* k, const ClassLoaderData* def_cld) {
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1570
  EventClassDefine event;
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1571
  if (event.should_commit()) {
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1572
    event.set_definedClass(k);
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1573
    event.set_definingClassLoader(def_cld);
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1574
    event.commit();
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1575
  }
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1576
}
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1577
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1578
void SystemDictionary::define_instance_class(InstanceKlass* k, TRAPS) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  1580
  HandleMark hm(THREAD);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1581
  ClassLoaderData* loader_data = k->class_loader_data();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1582
  Handle class_loader_h(THREAD, loader_data->class_loader());
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1583
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1584
 // for bootstrap and other parallel classloaders don't acquire lock,
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1585
 // use placeholder token
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1586
 // If a parallelCapable class loader calls define_instance_class instead of
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1587
 // find_or_define_instance_class to get here, we have a timing
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1588
 // hole with systemDictionary updates and check_constraints
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1589
 if (!class_loader_h.is_null() && !is_parallelCapable(class_loader_h)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1590
    assert(ObjectSynchronizer::current_thread_holds_lock((JavaThread*)THREAD,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1591
         compute_loader_lock_object(class_loader_h, THREAD)),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
         "define called without lock");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1594
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
  // Check class-loading constraints. Throw exception if violation is detected.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
  // Grabs and releases SystemDictionary_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
  // The check_constraints/find_class call and update_dictionary sequence
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1598
  // must be "atomic" for a specific class/classloader pair so we never
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1599
  // define two different instanceKlasses for that class/classloader pair.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1600
  // Existing classloaders will call define_instance_class with the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1601
  // classloader lock held
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
  // Parallel classloaders will call find_or_define_instance_class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
  // which will require a token to perform the define class
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  1604
  Symbol*  name_h = k->name();
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1605
  Dictionary* dictionary = loader_data->dictionary();
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1606
  unsigned int d_hash = dictionary->compute_hash(name_h);
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  1607
  check_constraints(d_hash, k, class_loader_h, true, CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
13753
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1609
  // Register class just loaded with class loader (placed in Vector)
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1610
  // Note we do this before updating the dictionary, as this can
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1611
  // fail with an OutOfMemoryError (if it does, we will *not* put this
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1612
  // class in the dictionary and will not update the class hierarchy).
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1613
  // JVMTI FollowReferences needs to find the classes this way.
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1614
  if (k->class_loader() != NULL) {
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1615
    methodHandle m(THREAD, Universe::loader_addClass_method());
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1616
    JavaValue result(T_VOID);
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1617
    JavaCallArguments args(class_loader_h);
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1618
    args.push_oop(Handle(THREAD, k->java_mirror()));
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1619
    JavaCalls::call(&result, m, &args, CHECK);
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1620
  }
1df4fd11c5b8 7197269: NPG: FollowReferences has no ClassLoader -> Class link to follow
coleenp
parents: 13738
diff changeset
  1621
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1622
  // Add the new class. We need recompile lock during update of CHA.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1623
  {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1624
    unsigned int p_hash = placeholders()->compute_hash(name_h);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
    int p_index = placeholders()->hash_to_index(p_hash);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
    MutexLocker mu_r(Compile_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1628
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1629
    // Add to class hierarchy, initialize vtables, and do possible
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1630
    // deoptimizations.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1631
    add_to_hierarchy(k, CHECK); // No exception, but can block
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1632
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
    // Add to systemDictionary - so other classes can see it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
    // Grabs and releases SystemDictionary_lock
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  1635
    update_dictionary(d_hash, p_index, p_hash,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1636
                      k, class_loader_h, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1637
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1638
  k->eager_initialize(THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1639
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1640
  // notify jvmti
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
  if (JvmtiExport::should_post_class_load()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
      assert(THREAD->is_Java_thread(), "thread->is_Java_thread()");
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1643
      JvmtiExport::post_class_load((JavaThread *) THREAD, k);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1644
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
  }
50113
caf115bb98ad 8199712: Flight Recorder
egahlin
parents: 50063
diff changeset
  1646
  post_class_define_event(k, loader_data);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1647
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1648
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1649
// Support parallel classloading
4445
1356c4b003de 6893504: LinkageError for bootstrap duplicate class definitions.
acorn
parents: 4094
diff changeset
  1650
// All parallel class loaders, including bootstrap classloader
1356c4b003de 6893504: LinkageError for bootstrap duplicate class definitions.
acorn
parents: 4094
diff changeset
  1651
// lock a placeholder entry for this class/class_loader pair
1356c4b003de 6893504: LinkageError for bootstrap duplicate class definitions.
acorn
parents: 4094
diff changeset
  1652
// to allow parallel defines of different classes for this class loader
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1653
// With AllowParallelDefine flag==true, in case they do not synchronize around
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1654
// FindLoadedClass/DefineClass, calls, we check for parallel
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1655
// loading for them, wait if a defineClass is in progress
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1656
// and return the initial requestor's results
4445
1356c4b003de 6893504: LinkageError for bootstrap duplicate class definitions.
acorn
parents: 4094
diff changeset
  1657
// This flag does not apply to the bootstrap classloader.
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1658
// With AllowParallelDefine flag==false, call through to define_instance_class
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1659
// which will throw LinkageError: duplicate class definition.
4445
1356c4b003de 6893504: LinkageError for bootstrap duplicate class definitions.
acorn
parents: 4094
diff changeset
  1660
// False is the requested default.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1661
// For better performance, the class loaders should synchronize
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1662
// findClass(), i.e. FindLoadedClass/DefineClassIfAbsent or they
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
// potentially waste time reading and parsing the bytestream.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
// Note: VM callers should ensure consistency of k/class_name,class_loader
40016
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1665
// Be careful when modifying this code: once you have run
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1666
// placeholders()->find_and_add(PlaceholderTable::DEFINE_CLASS),
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1667
// you need to find_and_remove it before returning.
bf6fcd467a7b 8162340: Better class stream parsing
acorn
parents: 40013
diff changeset
  1668
// So be careful to not exit with a CHECK_ macro betweeen these calls.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1669
InstanceKlass* SystemDictionary::find_or_define_instance_class(Symbol* class_name, Handle class_loader,
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1670
                                                               InstanceKlass* k, TRAPS) {
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1671
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  1672
  Symbol*  name_h = k->name(); // passed in class_name may be null
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1673
  ClassLoaderData* loader_data = class_loader_data(class_loader);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1674
  Dictionary* dictionary = loader_data->dictionary();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1675
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1676
  unsigned int d_hash = dictionary->compute_hash(name_h);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1677
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1678
  // Hold SD lock around find_class and placeholder creation for DEFINE_CLASS
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1679
  unsigned int p_hash = placeholders()->compute_hash(name_h);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1680
  int p_index = placeholders()->hash_to_index(p_hash);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1681
  PlaceholderEntry* probe;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1682
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
    MutexLocker mu(SystemDictionary_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
    // First check if class already defined
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1686
    if (is_parallelDefine(class_loader)) {
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  1687
      InstanceKlass* check = find_class(d_hash, name_h, dictionary);
4445
1356c4b003de 6893504: LinkageError for bootstrap duplicate class definitions.
acorn
parents: 4094
diff changeset
  1688
      if (check != NULL) {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1689
        return check;
4445
1356c4b003de 6893504: LinkageError for bootstrap duplicate class definitions.
acorn
parents: 4094
diff changeset
  1690
      }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1691
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1692
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1693
    // Acquire define token for this class/classloader
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1694
    probe = placeholders()->find_and_add(p_index, p_hash, name_h, loader_data, PlaceholderTable::DEFINE_CLASS, NULL, THREAD);
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1695
    // Wait if another thread defining in parallel
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1696
    // All threads wait - even those that will throw duplicate class: otherwise
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1697
    // caller is surprised by LinkageError: duplicate, but findLoadedClass fails
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1698
    // if other thread has not finished updating dictionary
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1699
    while (probe->definer() != NULL) {
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1700
      SystemDictionary_lock->wait();
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1701
    }
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1702
    // Only special cases allow parallel defines and can use other thread's results
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1703
    // Other cases fall through, and may run into duplicate defines
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1704
    // caught by finding an entry in the SystemDictionary
49037
dc68aeea4840 8184289: Obsolete -XX:+UnsyncloadClass and -XX:+MustCallLoadClassInternal options
hseigel
parents: 48826
diff changeset
  1705
    if (is_parallelDefine(class_loader) && (probe->instance_klass() != NULL)) {
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
  1706
        placeholders()->find_and_remove(p_index, p_hash, name_h, loader_data, PlaceholderTable::DEFINE_CLASS, THREAD);
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1707
        SystemDictionary_lock->notify_all();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1708
#ifdef ASSERT
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  1709
        InstanceKlass* check = find_class(d_hash, name_h, dictionary);
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1710
        assert(check != NULL, "definer missed recording success");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1711
#endif
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1712
        return probe->instance_klass();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
    } else {
1890
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1714
      // This thread will define the class (even if earlier thread tried and had an error)
9ce941df84eb 4670071: loadClassInternal is too restrictive.
acorn
parents: 1550
diff changeset
  1715
      probe->set_definer(THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1716
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1717
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1718
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
  define_instance_class(k, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1721
  Handle linkage_exception = Handle(); // null handle
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1723
  // definer must notify any waiting threads
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1725
    MutexLocker mu(SystemDictionary_lock, THREAD);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1726
    PlaceholderEntry* probe = placeholders()->get_entry(p_index, p_hash, name_h, loader_data);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
    assert(probe != NULL, "DEFINE_CLASS placeholder lost?");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
    if (probe != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
      if (HAS_PENDING_EXCEPTION) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
        linkage_exception = Handle(THREAD,PENDING_EXCEPTION);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
        CLEAR_PENDING_EXCEPTION;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
      } else {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1733
        probe->set_instance_klass(k);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1734
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
      probe->set_definer(NULL);
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
  1736
      placeholders()->find_and_remove(p_index, p_hash, name_h, loader_data, PlaceholderTable::DEFINE_CLASS, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
      SystemDictionary_lock->notify_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1738
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
  // Can't throw exception while holding lock due to rank ordering
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1742
  if (linkage_exception() != NULL) {
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1743
    THROW_OOP_(linkage_exception(), NULL); // throws exception and returns
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
  return k;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
}
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1748
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
Handle SystemDictionary::compute_loader_lock_object(Handle class_loader, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
  // If class_loader is NULL we synchronize on _system_loader_lock_obj
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1751
  if (class_loader.is_null()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
    return Handle(THREAD, _system_loader_lock_obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
    return class_loader;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
// This method is added to check how often we have to wait to grab loader
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
// lock. The results are being recorded in the performance counters defined in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
// ClassLoader::_sync_systemLoaderLockContentionRate and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
// ClassLoader::_sync_nonSystemLoaderLockConteionRate.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
void SystemDictionary::check_loader_lock_contention(Handle loader_lock, TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1763
  if (!UsePerfData) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1764
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1765
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1766
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1767
  assert(!loader_lock.is_null(), "NULL lock object");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1768
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1769
  if (ObjectSynchronizer::query_lock_ownership((JavaThread*)THREAD, loader_lock)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1770
      == ObjectSynchronizer::owner_other) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1771
    // contention will likely happen, so increment the corresponding
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1772
    // contention counter.
49658
8237a91c1cca 8199781: Don't use naked == for comparing oops
rkennke
parents: 49641
diff changeset
  1773
    if (oopDesc::equals(loader_lock(), _system_loader_lock_obj)) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1774
      ClassLoader::sync_systemLoaderLockContentionRate()->inc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1775
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1776
      ClassLoader::sync_nonSystemLoaderLockContentionRate()->inc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1777
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1778
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1779
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1780
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1781
// ----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1782
// Lookup
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1783
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  1784
InstanceKlass* SystemDictionary::find_class(unsigned int hash,
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1785
                                            Symbol* class_name,
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1786
                                            Dictionary* dictionary) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1787
  assert_locked_or_safepoint(SystemDictionary_lock);
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  1788
  int index = dictionary->hash_to_index(hash);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1789
  return dictionary->find_class(index, hash, class_name);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1790
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1791
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1792
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1793
// Basic find on classes in the midst of being loaded
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  1794
Symbol* SystemDictionary::find_placeholder(Symbol* class_name,
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1795
                                           ClassLoaderData* loader_data) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1796
  assert_locked_or_safepoint(SystemDictionary_lock);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1797
  unsigned int p_hash = placeholders()->compute_hash(class_name);
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  1798
  int p_index = placeholders()->hash_to_index(p_hash);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1799
  return placeholders()->find_entry(p_index, p_hash, class_name, loader_data);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1802
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1803
// Used for assertions and verification only
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1804
// Precalculating the hash and index is an optimization because there are many lookups
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1805
// before adding the class.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1806
InstanceKlass* SystemDictionary::find_class(Symbol* class_name, ClassLoaderData* loader_data) {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1807
  assert_locked_or_safepoint(SystemDictionary_lock);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1808
  #ifndef ASSERT
16680
960505df90e7 8011343: Add new flag for verifying the heap during startup
johnc
parents: 16631
diff changeset
  1809
  guarantee(VerifyBeforeGC      ||
960505df90e7 8011343: Add new flag for verifying the heap during startup
johnc
parents: 16631
diff changeset
  1810
            VerifyDuringGC      ||
960505df90e7 8011343: Add new flag for verifying the heap during startup
johnc
parents: 16631
diff changeset
  1811
            VerifyBeforeExit    ||
960505df90e7 8011343: Add new flag for verifying the heap during startup
johnc
parents: 16631
diff changeset
  1812
            VerifyDuringStartup ||
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
            VerifyAfterGC, "too expensive");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
  #endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1816
  Dictionary* dictionary = loader_data->dictionary();
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1817
  unsigned int d_hash = dictionary->compute_hash(class_name);
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  1818
  return find_class(d_hash, class_name, dictionary);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1820
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
// ----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1823
// Update hierachy. This is done before the new klass has been added to the SystemDictionary. The Recompile_lock
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1824
// is held, to ensure that the compiler is not using the class hierachy, and that deoptimization will kick in
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
// before a new class is used.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1827
void SystemDictionary::add_to_hierarchy(InstanceKlass* k, TRAPS) {
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  1828
  assert(k != NULL, "just checking");
8314
057b1c20fd7e 6354181: nsk.logging.stress.threads.scmhml001 fails assertion in "src/share/vm/oops/instanceKlass.cpp, 111"
never
parents: 8076
diff changeset
  1829
  assert_locked_or_safepoint(Compile_lock);
057b1c20fd7e 6354181: nsk.logging.stress.threads.scmhml001 fails assertion in "src/share/vm/oops/instanceKlass.cpp, 111"
never
parents: 8076
diff changeset
  1830
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
  // Link into hierachy. Make sure the vtables are initialized before linking into
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
  k->append_to_sibling_list();                    // add to superklass/sibling list
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
  k->process_interfaces(THREAD);                  // handle all "implements" declarations
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1834
  k->set_init_state(InstanceKlass::loaded);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
  // Now flush all code that depended on old class hierarchy.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
  // Note: must be done *after* linking k into the hierarchy (was bug 12/9/97)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
  // Also, first reinitialize vtable because it may have gotten out of synch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
  // while the new class wasn't connected to the class hierarchy.
28374
0558e321c027 8067836: The Universe::flush_foo methods belong in CodeCache.
coleenp
parents: 27694
diff changeset
  1839
  CodeCache::flush_dependents_on(k);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
// ----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
// GC support
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
15188
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
  1845
// Assumes classes in the SystemDictionary are only unloaded at a safepoint
3916ac601e04 7199207: NPG: Crash in PlaceholderTable::verify after StackOverflow
acorn
parents: 14588
diff changeset
  1846
// Note: anonymous classes are not in the SD.
50297
580744d900c8 8202813: Move vm_weak processing from SystemDictionary to WeakProcessor
coleenp
parents: 50176
diff changeset
  1847
bool SystemDictionary::do_unloading(GCTimer* gc_timer,
46505
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1848
                                    bool do_cleaning) {
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1849
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1850
  bool unloading_occurred;
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1851
  {
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1852
    GCTraceTime(Debug, gc, phases) t("ClassLoaderData", gc_timer);
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1853
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1854
    // First, mark for unload all ClassLoaderData referencing a dead class loader.
49818
e57e6addb978 8201505: Use WeakHandle for ProtectionDomainCacheTable and ResolvedMethodTable
coleenp
parents: 49786
diff changeset
  1855
    unloading_occurred = ClassLoaderDataGraph::do_unloading(do_cleaning);
46505
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1856
  }
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1857
26174
ca46a107cb78 8054402: "klass->is_loader_alive(_is_alive)) failed: must be alive" for anonymous classes
thartmann
parents: 25492
diff changeset
  1858
  if (unloading_occurred) {
46505
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1859
    GCTraceTime(Debug, gc, phases) t("Dictionary", gc_timer);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1860
    constraints()->purge_loader_constraints();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1861
    resolution_errors()->purge_resolution_errors();
20405
3321f6b16639 8003420: NPG: make new GC root for pd_set
tschatzl
parents: 18025
diff changeset
  1862
  }
46505
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1863
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1864
  {
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1865
    GCTraceTime(Debug, gc, phases) t("ProtectionDomainCacheTable", gc_timer);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1866
    // Oops referenced by the protection domain cache table may get unreachable independently
46505
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1867
    // of the class loader (eg. cached protection domain oops). So we need to
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1868
    // explicitly unlink them here.
49818
e57e6addb978 8201505: Use WeakHandle for ProtectionDomainCacheTable and ResolvedMethodTable
coleenp
parents: 49786
diff changeset
  1869
    _pd_cache_table->unlink();
46505
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1870
  }
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1871
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1872
  if (do_cleaning) {
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1873
    GCTraceTime(Debug, gc, phases) t("ResolvedMethodTable", gc_timer);
49818
e57e6addb978 8201505: Use WeakHandle for ProtectionDomainCacheTable and ResolvedMethodTable
coleenp
parents: 49786
diff changeset
  1874
    ResolvedMethodTable::unlink();
46505
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1875
  }
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  1876
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1877
  return unloading_occurred;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1878
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1879
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
void SystemDictionary::oops_do(OopClosure* f) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
  f->do_oop(&_java_system_loader);
47614
0ecfd6c951a6 8185694: Replace SystemDictionaryShared::_java_platform_loader with SystemDictionary::is_platform_class_loader()
ccheung
parents: 47216
diff changeset
  1882
  f->do_oop(&_java_platform_loader);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1883
  f->do_oop(&_system_loader_lock_obj);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1884
  CDS_ONLY(SystemDictionaryShared::oops_do(f);)
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  1886
  // Visit extra methods
7104
0c8b519af363 6990192: VM crashes in ciTypeFlow::get_block_for()
twisti
parents: 6463
diff changeset
  1887
  invoke_method_table()->oops_do(f);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
46746
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1890
// CDS: scan and relocate all classes in the system dictionary.
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1891
void SystemDictionary::classes_do(MetaspaceClosure* it) {
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1892
  ClassLoaderData::the_null_class_loader_data()->dictionary()->classes_do(it);
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1893
}
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1894
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1895
// CDS: scan and relocate all classes referenced by _well_known_klasses[].
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1896
void SystemDictionary::well_known_klasses_do(MetaspaceClosure* it) {
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1897
  for (int id = FIRST_WKID; id < WKID_LIMIT; id++) {
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1898
    it->push(well_known_klass_addr((WKID)id));
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1899
  }
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1900
}
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  1901
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1902
void SystemDictionary::methods_do(void f(Method*)) {
46380
4a51438196cf 8026985: Rewrite SystemDictionary::classes_do and Dictionary::classes_do to use KlassClosure
coleenp
parents: 46329
diff changeset
  1903
  // Walk methods in loaded classes
4a51438196cf 8026985: Rewrite SystemDictionary::classes_do and Dictionary::classes_do to use KlassClosure
coleenp
parents: 46329
diff changeset
  1904
  ClassLoaderDataGraph::methods_do(f);
4a51438196cf 8026985: Rewrite SystemDictionary::classes_do and Dictionary::classes_do to use KlassClosure
coleenp
parents: 46329
diff changeset
  1905
  // Walk method handle intrinsics
7104
0c8b519af363 6990192: VM crashes in ciTypeFlow::get_block_for()
twisti
parents: 6463
diff changeset
  1906
  invoke_method_table()->methods_do(f);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1908
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1909
class RemoveClassesClosure : public CLDClosure {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1910
  public:
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1911
    void do_cld(ClassLoaderData* cld) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1912
      if (cld->is_system_class_loader_data() || cld->is_platform_class_loader_data()) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1913
        cld->dictionary()->remove_classes_in_error_state();
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1914
      }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1915
    }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1916
};
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1917
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1918
void SystemDictionary::remove_classes_in_error_state() {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1919
  ClassLoaderData::the_null_class_loader_data()->dictionary()->remove_classes_in_error_state();
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1920
  RemoveClassesClosure rcc;
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  1921
  ClassLoaderDataGraph::cld_do(&rcc);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1922
}
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  1923
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1924
// ----------------------------------------------------------------------------
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1925
// Initialization
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1926
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
void SystemDictionary::initialize(TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1928
  // Allocate arrays
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1929
  _placeholders        = new PlaceholderTable(_placeholder_table_size);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1930
  _number_of_modifications = 0;
7104
0c8b519af363 6990192: VM crashes in ciTypeFlow::get_block_for()
twisti
parents: 6463
diff changeset
  1931
  _loader_constraints  = new LoaderConstraintTable(_loader_constraint_size);
0c8b519af363 6990192: VM crashes in ciTypeFlow::get_block_for()
twisti
parents: 6463
diff changeset
  1932
  _resolution_errors   = new ResolutionErrorTable(_resolution_error_size);
0c8b519af363 6990192: VM crashes in ciTypeFlow::get_block_for()
twisti
parents: 6463
diff changeset
  1933
  _invoke_method_table = new SymbolPropertyTable(_invoke_method_size);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  1934
  _pd_cache_table = new ProtectionDomainCacheTable(defaultProtectionDomainCacheSize);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1935
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1936
  // Allocate private object used as system class loader lock
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  1937
  _system_loader_lock_obj = oopFactory::new_intArray(0, CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
  // Initialize basic classes
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  1939
  resolve_preloaded_classes(CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1942
// Compact table of directions on the initialization of klasses:
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1943
static const short wk_init_info[] = {
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1944
  #define WK_KLASS_INIT_INFO(name, symbol, option) \
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1945
    ( ((int)vmSymbols::VM_SYMBOL_ENUM_NAME(symbol) \
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1946
          << SystemDictionary::CEIL_LG_OPTION_LIMIT) \
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1947
      | (int)SystemDictionary::option ),
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1948
  WK_KLASSES_DO(WK_KLASS_INIT_INFO)
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1949
  #undef WK_KLASS_INIT_INFO
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1950
  0
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1951
};
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1952
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  1953
bool SystemDictionary::resolve_wk_klass(WKID id, int init_opt, TRAPS) {
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1954
  assert(id >= (int)FIRST_WKID && id < (int)WKID_LIMIT, "oob");
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1955
  int  info = wk_init_info[id - FIRST_WKID];
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1956
  int  sid  = (info >> CEIL_LG_OPTION_LIMIT);
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  1957
  Symbol* symbol = vmSymbols::symbol_at((vmSymbols::SID)sid);
33602
16053580a684 8139163: InstanceKlass::cast passes through NULL
coleenp
parents: 33593
diff changeset
  1958
  InstanceKlass** klassp = &_well_known_klasses[id];
37281
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1959
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1960
  bool must_load;
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1961
#if INCLUDE_JVMCI
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1962
  if (EnableJVMCI) {
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1963
    // If JVMCI is enabled we require its classes to be found.
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1964
    must_load = (init_opt < SystemDictionary::Opt) || (init_opt == SystemDictionary::Jvmci);
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1965
  } else
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1966
#endif
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1967
  {
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1968
    must_load = (init_opt < SystemDictionary::Opt);
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1969
  }
c4e7456d6ae1 8144964: JVMCI compilations need to be disabled until the module system is initialized
twisti
parents: 36822
diff changeset
  1970
15432
9d976ca484d8 8000692: Remove old KERNEL code
zgu
parents: 15188
diff changeset
  1971
  if ((*klassp) == NULL) {
33602
16053580a684 8139163: InstanceKlass::cast passes through NULL
coleenp
parents: 33593
diff changeset
  1972
    Klass* k;
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1973
    if (must_load) {
33602
16053580a684 8139163: InstanceKlass::cast passes through NULL
coleenp
parents: 33593
diff changeset
  1974
      k = resolve_or_fail(symbol, true, CHECK_0); // load required class
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1975
    } else {
33602
16053580a684 8139163: InstanceKlass::cast passes through NULL
coleenp
parents: 33593
diff changeset
  1976
      k = resolve_or_null(symbol,       CHECK_0); // load optional klass
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1977
    }
33602
16053580a684 8139163: InstanceKlass::cast passes through NULL
coleenp
parents: 33593
diff changeset
  1978
    (*klassp) = (k == NULL) ? NULL : InstanceKlass::cast(k);
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1979
  }
9116
9bc44be338d6 6981791: remove experimental code for JSR 292
jrose
parents: 8883
diff changeset
  1980
  return ((*klassp) != NULL);
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1981
}
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1982
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  1983
void SystemDictionary::resolve_wk_klasses_until(WKID limit_id, WKID &start_id, TRAPS) {
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1984
  assert((int)start_id <= (int)limit_id, "IDs are out of order!");
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1985
  for (int id = (int)start_id; id < (int)limit_id; id++) {
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1986
    assert(id >= (int)FIRST_WKID && id < (int)WKID_LIMIT, "oob");
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1987
    int info = wk_init_info[id - FIRST_WKID];
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1988
    int sid  = (info >> CEIL_LG_OPTION_LIMIT);
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1989
    int opt  = (info & right_n_bits(CEIL_LG_OPTION_LIMIT));
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1990
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  1991
    resolve_wk_klass((WKID)id, opt, CHECK);
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1992
  }
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  1993
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  1994
  // move the starting value forward to the limit:
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  1995
  start_id = limit_id;
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1996
}
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  1997
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  1998
void SystemDictionary::resolve_preloaded_classes(TRAPS) {
4571
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  1999
  assert(WK_KLASS(Object_klass) == NULL, "preloaded classes should only be initialized once");
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  2000
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  2001
  // Create the ModuleEntry for java.base.  This call needs to be done here,
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  2002
  // after vmSymbols::initialize() is called but before any classes are pre-loaded.
40013
943cf01a6b82 8154239: -Xbootclasspath/a breaks exploded build
lfoltan
parents: 40002
diff changeset
  2003
  ClassLoader::classLoader_init2(CHECK);
36508
5f9eee6b383b 8142968: Module System implementation
alanb
parents: 36381
diff changeset
  2004
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
  // Preload commonly used klasses
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  2006
  WKID scan = FIRST_WKID;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2007
  // first do Object, then String, Class
46689
59f0972cf342 8184323: compile-time guard some UseSharedSpaces-only coding with the INCLUDE_CDS macro
mbaesken
parents: 46560
diff changeset
  2008
#if INCLUDE_CDS
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2009
  if (UseSharedSpaces) {
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  2010
    resolve_wk_klasses_through(WK_KLASS_ENUM_NAME(Object_klass), scan, CHECK);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2011
    // Initialize the constant pool for the Object_class
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2012
    Object_klass()->constants()->restore_unshareable_info(CHECK);
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  2013
    resolve_wk_klasses_through(WK_KLASS_ENUM_NAME(Class_klass), scan, CHECK);
46689
59f0972cf342 8184323: compile-time guard some UseSharedSpaces-only coding with the INCLUDE_CDS macro
mbaesken
parents: 46560
diff changeset
  2014
  } else
59f0972cf342 8184323: compile-time guard some UseSharedSpaces-only coding with the INCLUDE_CDS macro
mbaesken
parents: 46560
diff changeset
  2015
#endif
59f0972cf342 8184323: compile-time guard some UseSharedSpaces-only coding with the INCLUDE_CDS macro
mbaesken
parents: 46560
diff changeset
  2016
  {
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  2017
    resolve_wk_klasses_through(WK_KLASS_ENUM_NAME(Class_klass), scan, CHECK);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2018
  }
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  2019
12623
09fcb0dc71ad 6924259: Remove String.count/String.offset
kvn
parents: 11628
diff changeset
  2020
  // Calculate offsets for String and Class classes since they are loaded and
09fcb0dc71ad 6924259: Remove String.count/String.offset
kvn
parents: 11628
diff changeset
  2021
  // can be used after this point.
09fcb0dc71ad 6924259: Remove String.count/String.offset
kvn
parents: 11628
diff changeset
  2022
  java_lang_String::compute_offsets();
10546
e79347eebbc5 7086585: make Java field injection more flexible
never
parents: 10265
diff changeset
  2023
  java_lang_Class::compute_offsets();
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  2024
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
  // Fixup mirrors for classes loaded before java.lang.Class.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2026
  // These calls iterate over the objects currently in the perm gen
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2027
  // so calling them at this point is matters (not before when there
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2028
  // are fewer objects and not later after there are more objects
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2029
  // in the perm gen.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2030
  Universe::initialize_basic_type_mirrors(CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2031
  Universe::fixup_mirrors(CHECK);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2032
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  2033
  // do a bunch more:
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  2034
  resolve_wk_klasses_through(WK_KLASS_ENUM_NAME(Reference_klass), scan, CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2035
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2036
  // Preload ref klasses and set reference types
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2037
  InstanceKlass::cast(WK_KLASS(Reference_klass))->set_reference_type(REF_OTHER);
13738
d67be49a5beb 7195833: NPG: Rename instanceClassLoaderKlass, instanceRefKlass and instanceMirrorKlass
coleenp
parents: 13736
diff changeset
  2038
  InstanceRefKlass::update_nonstatic_oop_maps(WK_KLASS(Reference_klass));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2039
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  2040
  resolve_wk_klasses_through(WK_KLASS_ENUM_NAME(PhantomReference_klass), scan, CHECK);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2041
  InstanceKlass::cast(WK_KLASS(SoftReference_klass))->set_reference_type(REF_SOFT);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2042
  InstanceKlass::cast(WK_KLASS(WeakReference_klass))->set_reference_type(REF_WEAK);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2043
  InstanceKlass::cast(WK_KLASS(FinalReference_klass))->set_reference_type(REF_FINAL);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2044
  InstanceKlass::cast(WK_KLASS(PhantomReference_klass))->set_reference_type(REF_PHANTOM);
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  2045
8883
5569135acca3 6817525: turn on method handle functionality by default for JSR 292
twisti
parents: 8676
diff changeset
  2046
  // JSR 292 classes
5569135acca3 6817525: turn on method handle functionality by default for JSR 292
twisti
parents: 8676
diff changeset
  2047
  WKID jsr292_group_start = WK_KLASS_ENUM_NAME(MethodHandle_klass);
10265
4c869854aebd 7071653: JSR 292: call site change notification should be pushed not pulled
twisti
parents: 10008
diff changeset
  2048
  WKID jsr292_group_end   = WK_KLASS_ENUM_NAME(VolatileCallSite_klass);
51180
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  2049
  resolve_wk_klasses_until(jsr292_group_start, scan, CHECK);
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  2050
  resolve_wk_klasses_through(jsr292_group_end, scan, CHECK);
b7eb9cc56277 8203382: Rename SystemDictionary::initialize_wk_klass to resolve_wk_klass
iklam
parents: 51179
diff changeset
  2051
  resolve_wk_klasses_until(NOT_JVMCI(WKID_LIMIT) JVMCI_ONLY(FIRST_JVMCI_WKID), scan, CHECK);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2052
4571
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2053
  _box_klasses[T_BOOLEAN] = WK_KLASS(Boolean_klass);
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2054
  _box_klasses[T_CHAR]    = WK_KLASS(Character_klass);
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2055
  _box_klasses[T_FLOAT]   = WK_KLASS(Float_klass);
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2056
  _box_klasses[T_DOUBLE]  = WK_KLASS(Double_klass);
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2057
  _box_klasses[T_BYTE]    = WK_KLASS(Byte_klass);
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2058
  _box_klasses[T_SHORT]   = WK_KLASS(Short_klass);
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2059
  _box_klasses[T_INT]     = WK_KLASS(Integer_klass);
80b553bddc26 6914300: ciEnv should export all well known classes
never
parents: 4564
diff changeset
  2060
  _box_klasses[T_LONG]    = WK_KLASS(Long_klass);
379
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  2061
  //_box_klasses[T_OBJECT]  = WK_KLASS(object_klass);
10767ca40189 6652736: well known classes in system dictionary are inefficiently processed
jrose
parents: 195
diff changeset
  2062
  //_box_klasses[T_ARRAY]   = WK_KLASS(object_klass);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2063
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2064
  { // Compute whether we should use checkPackageAccess or NOT
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2065
    Method* method = InstanceKlass::cast(ClassLoader_klass())->find_method(vmSymbols::checkPackageAccess_name(), vmSymbols::class_protectiondomain_signature());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2066
    _has_checkPackageAccess = (method != NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2067
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2068
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2069
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2070
// Tells if a given klass is a box (wrapper class, such as java.lang.Integer).
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2071
// If so, returns the basic type it holds.  If not, returns T_OBJECT.
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2072
BasicType SystemDictionary::box_klass_type(Klass* k) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
  assert(k != NULL, "");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
  for (int i = T_BOOLEAN; i < T_VOID+1; i++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2075
    if (_box_klasses[i] == k)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2076
      return (BasicType)i;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2077
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2078
  return T_OBJECT;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2079
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2080
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2081
// Constraints on class loaders. The details of the algorithm can be
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2082
// found in the OOPSLA'98 paper "Dynamic Class Loading in the Java
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
// Virtual Machine" by Sheng Liang and Gilad Bracha.  The basic idea is
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2084
// that the dictionary needs to maintain a set of contraints that
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
// must be satisfied by all classes in the dictionary.
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2086
// if defining is true, then LinkageError if already in dictionary
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2087
// if initiating loader, then ok if InstanceKlass matches existing entry
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  2089
void SystemDictionary::check_constraints(unsigned int d_hash,
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2090
                                         InstanceKlass* k,
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2091
                                         Handle class_loader,
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2092
                                         bool defining,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
                                         TRAPS) {
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2094
  ResourceMark rm(THREAD);
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2095
  stringStream ss;
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2096
  bool throwException = false;
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2097
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
  {
50176
0cc29ebee3f9 8203400: Fix issue with "8199852: Print more information about class loaders in LinkageErrors."
goetz
parents: 50152
diff changeset
  2099
    Symbol *name = k->name();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2100
    ClassLoaderData *loader_data = class_loader_data(class_loader);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2101
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2102
    MutexLocker mu(SystemDictionary_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2103
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  2104
    InstanceKlass* check = find_class(d_hash, name, loader_data->dictionary());
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2105
    if (check != NULL) {
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2106
      // If different InstanceKlass - duplicate class definition,
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2107
      // else - ok, class loaded by a different thread in parallel.
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2108
      // We should only have found it if it was done loading and ok to use.
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2109
      // The dictionary only holds instance classes, placeholders
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2110
      // also hold array classes.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2111
33611
9abd65805e19 8139203: Consistent naming for klass type predicates
coleenp
parents: 33602
diff changeset
  2112
      assert(check->is_instance_klass(), "noninstance in systemdictionary");
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2113
      if ((defining == true) || (k != check)) {
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2114
        throwException = true;
51097
bef02342d179 8205611: Improve the wording of LinkageErrors to include module and class loader information
lfoltan
parents: 51070
diff changeset
  2115
        ss.print("loader %s", loader_data->loader_name_and_id());
bef02342d179 8205611: Improve the wording of LinkageErrors to include module and class loader information
lfoltan
parents: 51070
diff changeset
  2116
        ss.print(" attempted duplicate %s definition for %s. (%s)",
bef02342d179 8205611: Improve the wording of LinkageErrors to include module and class loader information
lfoltan
parents: 51070
diff changeset
  2117
                 k->external_kind(), k->external_name(), k->class_in_module_of_loader(false, true));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
        return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2120
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2121
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2122
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2123
#ifdef ASSERT
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2124
    Symbol* ph_check = find_placeholder(name, loader_data);
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2125
    assert(ph_check == NULL || ph_check == name, "invalid symbol");
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2126
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2127
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2128
    if (throwException == false) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2129
      if (constraints()->check_or_update(k, class_loader, name) == false) {
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2130
        throwException = true;
51097
bef02342d179 8205611: Improve the wording of LinkageErrors to include module and class loader information
lfoltan
parents: 51070
diff changeset
  2131
        ss.print("loader constraint violation: loader %s", loader_data->loader_name_and_id());
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2132
        ss.print(" wants to load %s %s.",
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2133
                 k->external_kind(), k->external_name());
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2134
        Klass *existing_klass = constraints()->find_constrained_klass(name, class_loader);
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2135
        if (existing_klass->class_loader() != class_loader()) {
51097
bef02342d179 8205611: Improve the wording of LinkageErrors to include module and class loader information
lfoltan
parents: 51070
diff changeset
  2136
          ss.print(" A different %s with the same name was previously loaded by %s. (%s)",
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2137
                   existing_klass->external_kind(),
51097
bef02342d179 8205611: Improve the wording of LinkageErrors to include module and class loader information
lfoltan
parents: 51070
diff changeset
  2138
                   existing_klass->class_loader_data()->loader_name_and_id(),
bef02342d179 8205611: Improve the wording of LinkageErrors to include module and class loader information
lfoltan
parents: 51070
diff changeset
  2139
                   existing_klass->class_in_module_of_loader(false, true));
bef02342d179 8205611: Improve the wording of LinkageErrors to include module and class loader information
lfoltan
parents: 51070
diff changeset
  2140
        } else {
bef02342d179 8205611: Improve the wording of LinkageErrors to include module and class loader information
lfoltan
parents: 51070
diff changeset
  2141
          ss.print(" (%s)", k->class_in_module_of_loader(false, true));
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2142
        }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2145
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2146
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2147
  // Throw error now if needed (cannot throw while holding
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2148
  // SystemDictionary_lock because of rank ordering)
50036
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2149
  if (throwException == true) {
e0dbf14885b8 8199852: Print more information about class loaders in LinkageErrors.
goetz
parents: 49931
diff changeset
  2150
    THROW_MSG(vmSymbols::java_lang_LinkageError(), ss.as_string());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2151
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2152
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2153
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2154
// Update class loader data dictionary - done after check_constraint and add_to_hierachy
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2155
// have been called.
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  2156
void SystemDictionary::update_dictionary(unsigned int d_hash,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2157
                                         int p_index, unsigned int p_hash,
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2158
                                         InstanceKlass* k,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2159
                                         Handle class_loader,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2160
                                         TRAPS) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2161
  // Compile_lock prevents systemDictionary updates during compilations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2162
  assert_locked_or_safepoint(Compile_lock);
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2163
  Symbol*  name  = k->name();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2164
  ClassLoaderData *loader_data = class_loader_data(class_loader);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2165
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2166
  {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2167
    MutexLocker mu1(SystemDictionary_lock, THREAD);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2168
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2169
    // See whether biased locking is enabled and if so set it for this
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2170
    // klass.
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2171
    // Note that this must be done past the last potential blocking
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2172
    // point / safepoint. We enable biased locking lazily using a
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2173
    // VM_Operation to iterate the SystemDictionary and installing the
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2174
    // biasable mark word into each InstanceKlass's prototype header.
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2175
    // To avoid race conditions where we accidentally miss enabling the
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2176
    // optimization for one class in the process of being added to the
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2177
    // dictionary, we must not safepoint after the test of
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2178
    // BiasedLocking::enabled().
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2179
    if (UseBiasedLocking && BiasedLocking::enabled()) {
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2180
      // Set biased locking bit for all loaded classes; it will be
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2181
      // cleared if revocation occurs too often for this type
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2182
      // NOTE that we must only do this when the class is initally
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2183
      // defined, not each time it is referenced from a new class loader
49658
8237a91c1cca 8199781: Don't use naked == for comparing oops
rkennke
parents: 49641
diff changeset
  2184
      if (oopDesc::equals(k->class_loader(), class_loader())) {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2185
        k->set_prototype_header(markOopDesc::biased_locking_prototype());
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2186
      }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2189
    // Make a new dictionary entry.
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2190
    Dictionary* dictionary = loader_data->dictionary();
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  2191
    InstanceKlass* sd_check = find_class(d_hash, name, dictionary);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2192
    if (sd_check == NULL) {
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  2193
      dictionary->add_klass(d_hash, name, k);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2194
      notice_modification();
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2195
    }
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2196
  #ifdef ASSERT
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  2197
    sd_check = find_class(d_hash, name, dictionary);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2198
    assert (sd_check != NULL, "should have entry in dictionary");
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2199
    // Note: there may be a placeholder entry: for circularity testing
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2200
    // or for parallel defines
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2201
  #endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
    SystemDictionary_lock->notify_all();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2205
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
8314
057b1c20fd7e 6354181: nsk.logging.stress.threads.scmhml001 fails assertion in "src/share/vm/oops/instanceKlass.cpp, 111"
never
parents: 8076
diff changeset
  2207
// Try to find a class name using the loader constraints.  The
057b1c20fd7e 6354181: nsk.logging.stress.threads.scmhml001 fails assertion in "src/share/vm/oops/instanceKlass.cpp, 111"
never
parents: 8076
diff changeset
  2208
// loader constraints might know about a class that isn't fully loaded
057b1c20fd7e 6354181: nsk.logging.stress.threads.scmhml001 fails assertion in "src/share/vm/oops/instanceKlass.cpp, 111"
never
parents: 8076
diff changeset
  2209
// yet and these will be ignored.
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2210
Klass* SystemDictionary::find_constrained_instance_or_array_klass(
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2211
                    Symbol* class_name, Handle class_loader, TRAPS) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2212
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2213
  // First see if it has been loaded directly.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
  // Force the protection domain to be null.  (This removes protection checks.)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2215
  Handle no_protection_domain;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2216
  Klass* klass = find_instance_or_array_klass(class_name, class_loader,
13952
e3cf184080bc 8000213: NPG: Should have renamed arrayKlass and typeArrayKlass
coleenp
parents: 13753
diff changeset
  2217
                                              no_protection_domain, CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2218
  if (klass != NULL)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2219
    return klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2220
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2221
  // Now look to see if it has been loaded elsewhere, and is subject to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2222
  // a loader constraint that would require this loader to return the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2223
  // klass that is already loaded.
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2224
  if (FieldType::is_array(class_name)) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2225
    // For array classes, their Klass*s are not kept in the
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2226
    // constraint table. The element Klass*s are.
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2227
    FieldArrayInfo fd;
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2228
    BasicType t = FieldType::get_array_info(class_name, fd, CHECK_(NULL));
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
    if (t != T_OBJECT) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
      klass = Universe::typeArrayKlassObj(t);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
      MutexLocker mu(SystemDictionary_lock, THREAD);
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2233
      klass = constraints()->find_constrained_klass(fd.object_key(), class_loader);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
    }
5121
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2235
    // If element class already loaded, allocate array klass
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2236
    if (klass != NULL) {
14488
ab48109f7d1b 8001471: Klass::cast() does nothing
hseigel
parents: 14077
diff changeset
  2237
      klass = klass->array_klass_or_null(fd.dimension());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2238
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2239
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2240
    MutexLocker mu(SystemDictionary_lock, THREAD);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2241
    // Non-array classes are easy: simply check the constraint table.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2242
    klass = constraints()->find_constrained_klass(class_name, class_loader);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2243
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2244
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2245
  return klass;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2246
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2247
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2248
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2249
bool SystemDictionary::add_loader_constraint(Symbol* class_name,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2250
                                             Handle class_loader1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2251
                                             Handle class_loader2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2252
                                             Thread* THREAD) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2253
  ClassLoaderData* loader_data1 = class_loader_data(class_loader1);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2254
  ClassLoaderData* loader_data2 = class_loader_data(class_loader2);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2255
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2256
  Symbol* constraint_name = NULL;
51179
516acf6956a2 8207359: Make SymbolTable increment_refcount disallow zero
coleenp
parents: 51097
diff changeset
  2257
  // Needs to be in same scope as constraint_name in case a Symbol is created and
516acf6956a2 8207359: Make SymbolTable increment_refcount disallow zero
coleenp
parents: 51097
diff changeset
  2258
  // assigned to constraint_name.
516acf6956a2 8207359: Make SymbolTable increment_refcount disallow zero
coleenp
parents: 51097
diff changeset
  2259
  FieldArrayInfo fd;
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2260
  if (!FieldType::is_array(class_name)) {
5121
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2261
    constraint_name = class_name;
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2262
  } else {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2263
    // For array classes, their Klass*s are not kept in the
5121
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2264
    // constraint table. The element classes are.
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2265
    BasicType t = FieldType::get_array_info(class_name, fd, CHECK_(false));
5121
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2266
    // primitive types always pass
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2267
    if (t != T_OBJECT) {
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2268
      return true;
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2269
    } else {
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2270
      constraint_name = fd.object_key();
5121
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2271
    }
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2272
  }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2273
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2274
  Dictionary* dictionary1 = loader_data1->dictionary();
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2275
  unsigned int d_hash1 = dictionary1->compute_hash(constraint_name);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2276
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2277
  Dictionary* dictionary2 = loader_data2->dictionary();
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2278
  unsigned int d_hash2 = dictionary2->compute_hash(constraint_name);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2279
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2280
  {
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2281
    MutexLocker mu_s(SystemDictionary_lock, THREAD);
47774
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  2282
    InstanceKlass* klass1 = find_class(d_hash1, constraint_name, dictionary1);
69c081ca110a 8184765: Dynamically resize SystemDictionary
gziemski
parents: 47765
diff changeset
  2283
    InstanceKlass* klass2 = find_class(d_hash2, constraint_name, dictionary2);
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2284
    return constraints()->add_entry(constraint_name, klass1, class_loader1,
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2285
                                    klass2, class_loader2);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2286
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2287
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2288
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2289
// Add entry to resolution error table to record the error when the first
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2290
// attempt to resolve a reference to a class has failed.
33593
60764a78fa5c 8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents: 33198
diff changeset
  2291
void SystemDictionary::add_resolution_error(const constantPoolHandle& pool, int which,
24334
36096f7271f4 8023697: failed class resolution reports different class name in detail message for the first and subsequent times
coleenp
parents: 23872
diff changeset
  2292
                                            Symbol* error, Symbol* message) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2293
  unsigned int hash = resolution_errors()->compute_hash(pool, which);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2294
  int index = resolution_errors()->hash_to_index(hash);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2295
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2296
    MutexLocker ml(SystemDictionary_lock, Thread::current());
24334
36096f7271f4 8023697: failed class resolution reports different class name in detail message for the first and subsequent times
coleenp
parents: 23872
diff changeset
  2297
    resolution_errors()->add_entry(index, hash, pool, which, error, message);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2298
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2299
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2300
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2301
// Delete a resolution error for RedefineClasses for a constant pool is going away
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2302
void SystemDictionary::delete_resolution_error(ConstantPool* pool) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2303
  resolution_errors()->delete_entry(pool);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2304
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2305
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2306
// Lookup resolution error table. Returns error if found, otherwise NULL.
33593
60764a78fa5c 8140274: methodHandles and constantPoolHandles should be passed as const references
coleenp
parents: 33198
diff changeset
  2307
Symbol* SystemDictionary::find_resolution_error(const constantPoolHandle& pool, int which,
24334
36096f7271f4 8023697: failed class resolution reports different class name in detail message for the first and subsequent times
coleenp
parents: 23872
diff changeset
  2308
                                                Symbol** message) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2309
  unsigned int hash = resolution_errors()->compute_hash(pool, which);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2310
  int index = resolution_errors()->hash_to_index(hash);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2311
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2312
    MutexLocker ml(SystemDictionary_lock, Thread::current());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2313
    ResolutionErrorEntry* entry = resolution_errors()->find_entry(index, hash, pool, which);
24334
36096f7271f4 8023697: failed class resolution reports different class name in detail message for the first and subsequent times
coleenp
parents: 23872
diff changeset
  2314
    if (entry != NULL) {
36096f7271f4 8023697: failed class resolution reports different class name in detail message for the first and subsequent times
coleenp
parents: 23872
diff changeset
  2315
      *message = entry->message();
36096f7271f4 8023697: failed class resolution reports different class name in detail message for the first and subsequent times
coleenp
parents: 23872
diff changeset
  2316
      return entry->error();
36096f7271f4 8023697: failed class resolution reports different class name in detail message for the first and subsequent times
coleenp
parents: 23872
diff changeset
  2317
    } else {
36096f7271f4 8023697: failed class resolution reports different class name in detail message for the first and subsequent times
coleenp
parents: 23872
diff changeset
  2318
      return NULL;
36096f7271f4 8023697: failed class resolution reports different class name in detail message for the first and subsequent times
coleenp
parents: 23872
diff changeset
  2319
    }
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2320
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2321
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2322
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2323
2332
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2324
// Signature constraints ensure that callers and callees agree about
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2325
// the meaning of type names in their signatures.  This routine is the
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2326
// intake for constraints.  It collects them from several places:
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2327
//
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2328
//  * LinkResolver::resolve_method (if check_access is true) requires
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2329
//    that the resolving class (the caller) and the defining class of
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2330
//    the resolved method (the callee) agree on each type in the
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2331
//    method's signature.
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2332
//
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2333
//  * LinkResolver::resolve_interface_method performs exactly the same
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2334
//    checks.
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2335
//
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2336
//  * LinkResolver::resolve_field requires that the constant pool
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2337
//    attempting to link to a field agree with the field's defining
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2338
//    class about the type of the field signature.
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2339
//
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2340
//  * klassVtable::initialize_vtable requires that, when a class
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2341
//    overrides a vtable entry allocated by a superclass, that the
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2342
//    overriding method (i.e., the callee) agree with the superclass
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2343
//    on each type in the method's signature.
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2344
//
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2345
//  * klassItable::initialize_itable requires that, when a class fills
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2346
//    in its itables, for each non-abstract method installed in an
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2347
//    itable, the method (i.e., the callee) agree with the interface
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2348
//    on each type in the method's signature.
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2349
//
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2350
// All those methods have a boolean (check_access, checkconstraints)
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2351
// which turns off the checks.  This is used from specialized contexts
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2352
// such as bootstrapping, dumping, and debugging.
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2353
//
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2354
// No direct constraint is placed between the class and its
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2355
// supertypes.  Constraints are only placed along linked relations
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2356
// between callers and callees.  When a method overrides or implements
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2357
// an abstract method in a supertype (superclass or interface), the
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2358
// constraints are placed as if the supertype were the caller to the
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2359
// overriding method.  (This works well, since callers to the
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2360
// supertype have already established agreement between themselves and
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2361
// the supertype.)  As a result of all this, a class can disagree with
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2362
// its supertype about the meaning of a type name, as long as that
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2363
// class neither calls a relevant method of the supertype, nor is
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2364
// called (perhaps via an override) from the supertype.
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2365
//
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2366
//
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2367
// SystemDictionary::check_signature_loaders(sig, l1, l2)
5c7b6f4ce0a1 6814659: separable cleanups and subroutines for 6655638
jrose
parents: 2105
diff changeset
  2368
//
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2369
// Make sure all class components (including arrays) in the given
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2370
// signature will be resolved to the same class in both loaders.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2371
// Returns the name of the type that failed a loader constraint check, or
16591
73047b0eb568 8009731: Confusing error message for loader constraint violation
acorn
parents: 16352
diff changeset
  2372
// NULL if no constraint failed.  No exception except OOME is thrown.
5121
5e80657d23e7 6626217: Fixed loader constraint array handling
acorn
parents: 4094
diff changeset
  2373
// Arrays are not added to the loader constraint table, their elements are.
16591
73047b0eb568 8009731: Confusing error message for loader constraint violation
acorn
parents: 16352
diff changeset
  2374
Symbol* SystemDictionary::check_signature_loaders(Symbol* signature,
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2375
                                               Handle loader1, Handle loader2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2376
                                               bool is_method, TRAPS)  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2377
  // Nothing to do if loaders are the same.
49658
8237a91c1cca 8199781: Don't use naked == for comparing oops
rkennke
parents: 49641
diff changeset
  2378
  if (oopDesc::equals(loader1(), loader2())) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2379
    return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2380
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2381
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2382
  SignatureStream sig_strm(signature, is_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2383
  while (!sig_strm.is_done()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2384
    if (sig_strm.is_object()) {
16591
73047b0eb568 8009731: Confusing error message for loader constraint violation
acorn
parents: 16352
diff changeset
  2385
      Symbol* sig = sig_strm.as_symbol(CHECK_NULL);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2386
      if (!add_loader_constraint(sig, loader1, loader2, THREAD)) {
16591
73047b0eb568 8009731: Confusing error message for loader constraint violation
acorn
parents: 16352
diff changeset
  2387
        return sig;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2388
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2389
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2390
    sig_strm.next();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2391
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2392
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2393
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2394
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2395
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2396
methodHandle SystemDictionary::find_method_handle_intrinsic(vmIntrinsics::ID iid,
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2397
                                                            Symbol* signature,
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2398
                                                            TRAPS) {
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2399
  methodHandle empty;
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2400
  assert(MethodHandles::is_signature_polymorphic(iid) &&
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2401
         MethodHandles::is_signature_polymorphic_intrinsic(iid) &&
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2402
         iid != vmIntrinsics::_invokeGeneric,
33105
294e48b4f704 8080775: Better argument formatting for assert() and friends
david
parents: 32349
diff changeset
  2403
         "must be a known MH intrinsic iid=%d: %s", iid, vmIntrinsics::name_at(iid));
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2404
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2405
  unsigned int hash  = invoke_method_table()->compute_hash(signature, iid);
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2406
  int          index = invoke_method_table()->hash_to_index(hash);
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2407
  SymbolPropertyEntry* spe = invoke_method_table()->find_entry(index, hash, signature, iid);
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2408
  methodHandle m;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2409
  if (spe == NULL || spe->method() == NULL) {
5421
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2410
    spe = NULL;
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2411
    // Must create lots of stuff here, but outside of the SystemDictionary lock.
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2412
    m = Method::make_method_handle_intrinsic(iid, signature, CHECK_(empty));
26911
8f2c7a83220f 8058536: java/lang/instrument/NativeMethodPrefixAgent.java fails due to VirtualMachineError: out of space in CodeCache for method handle intrinsic
iveresov
parents: 26585
diff changeset
  2413
    if (!Arguments::is_interpreter_only()) {
8f2c7a83220f 8058536: java/lang/instrument/NativeMethodPrefixAgent.java fails due to VirtualMachineError: out of space in CodeCache for method handle intrinsic
iveresov
parents: 26585
diff changeset
  2414
      // Generate a compiled form of the MH intrinsic.
8f2c7a83220f 8058536: java/lang/instrument/NativeMethodPrefixAgent.java fails due to VirtualMachineError: out of space in CodeCache for method handle intrinsic
iveresov
parents: 26585
diff changeset
  2415
      AdapterHandlerLibrary::create_native_wrapper(m);
8f2c7a83220f 8058536: java/lang/instrument/NativeMethodPrefixAgent.java fails due to VirtualMachineError: out of space in CodeCache for method handle intrinsic
iveresov
parents: 26585
diff changeset
  2416
      // Check if have the compiled code.
8f2c7a83220f 8058536: java/lang/instrument/NativeMethodPrefixAgent.java fails due to VirtualMachineError: out of space in CodeCache for method handle intrinsic
iveresov
parents: 26585
diff changeset
  2417
      if (!m->has_compiled_code()) {
8f2c7a83220f 8058536: java/lang/instrument/NativeMethodPrefixAgent.java fails due to VirtualMachineError: out of space in CodeCache for method handle intrinsic
iveresov
parents: 26585
diff changeset
  2418
        THROW_MSG_(vmSymbols::java_lang_VirtualMachineError(),
34213
3f99eccd6ea3 8067939: make Out of space in CodeCache messages consistent
tpivovarova
parents: 33612
diff changeset
  2419
                   "Out of space in CodeCache for method handle intrinsic", empty);
26911
8f2c7a83220f 8058536: java/lang/instrument/NativeMethodPrefixAgent.java fails due to VirtualMachineError: out of space in CodeCache for method handle intrinsic
iveresov
parents: 26585
diff changeset
  2420
      }
26585
2048b8d90c91 8058092: Test vm/mlvm/meth/stress/compiler/deoptimize. Assert in src/share/vm/classfile/systemDictionary.cpp: MH intrinsic invariant
iveresov
parents: 26583
diff changeset
  2421
    }
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2422
    // Now grab the lock.  We might have to throw away the new method,
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2423
    // if a racing thread has managed to install one at the same time.
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2424
    {
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2425
      MutexLocker ml(SystemDictionary_lock, THREAD);
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2426
      spe = invoke_method_table()->find_entry(index, hash, signature, iid);
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2427
      if (spe == NULL)
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2428
        spe = invoke_method_table()->add_entry(index, hash, signature, iid);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2429
      if (spe->method() == NULL)
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2430
        spe->set_method(m());
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2431
    }
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2432
  }
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2433
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2434
  assert(spe != NULL && spe->method() != NULL, "");
26585
2048b8d90c91 8058092: Test vm/mlvm/meth/stress/compiler/deoptimize. Assert in src/share/vm/classfile/systemDictionary.cpp: MH intrinsic invariant
iveresov
parents: 26583
diff changeset
  2435
  assert(Arguments::is_interpreter_only() || (spe->method()->has_compiled_code() &&
26580
8cca7fbe77b8 8056154: JVM crash with EXCEPTION_ACCESS_VIOLATION when there are many threads running
iveresov
parents: 26181
diff changeset
  2436
         spe->method()->code()->entry_point() == spe->method()->from_compiled_entry()),
8cca7fbe77b8 8056154: JVM crash with EXCEPTION_ACCESS_VIOLATION when there are many threads running
iveresov
parents: 26181
diff changeset
  2437
         "MH intrinsic invariant");
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2438
  return spe->method();
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2439
}
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2440
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2441
// Helper for unpacking the return value from linkMethod and linkCallSite.
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2442
static methodHandle unpack_method_and_appendix(Handle mname,
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2443
                                               Klass* accessing_klass,
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2444
                                               objArrayHandle appendix_box,
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2445
                                               Handle* appendix_result,
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2446
                                               TRAPS) {
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2447
  methodHandle empty;
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2448
  if (mname.not_null()) {
46505
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  2449
    Method* m = java_lang_invoke_MemberName::vmtarget(mname());
fd4bc78630b1 8174749: Use hash table/oops for MemberName table
coleenp
parents: 46444
diff changeset
  2450
    if (m != NULL) {
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2451
      oop appendix = appendix_box->obj_at(0);
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2452
      if (TraceMethodHandles) {
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2453
    #ifndef PRODUCT
35543
0961315f4016 8140659: C1: invokedynamic call patching violates JVMS-6.5.invokedynamic
vlivanov
parents: 34666
diff changeset
  2454
        ttyLocker ttyl;
24424
2658d7834c6e 8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents: 24352
diff changeset
  2455
        tty->print("Linked method=" INTPTR_FORMAT ": ", p2i(m));
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2456
        m->print();
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2457
        if (appendix != NULL) { tty->print("appendix = "); appendix->print(); }
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2458
        tty->cr();
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2459
    #endif //PRODUCT
9630
d6419e4395e3 6939861: JVM should handle more conversion operations
never
parents: 9172
diff changeset
  2460
      }
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2461
      (*appendix_result) = Handle(THREAD, appendix);
14588
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  2462
      // the target is stored in the cpCache and if a reference to this
49348
fde3feaaa4ed 8198926: Move ClassLoaderData::_dependencies to ClassLoaderData::_handles
coleenp
parents: 49340
diff changeset
  2463
      // MemberName is dropped we need a way to make sure the
14588
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  2464
      // class_loader containing this method is kept alive.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2465
      ClassLoaderData* this_key = accessing_klass->class_loader_data();
49348
fde3feaaa4ed 8198926: Move ClassLoaderData::_dependencies to ClassLoaderData::_handles
coleenp
parents: 49340
diff changeset
  2466
      this_key->record_dependency(m->method_holder());
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2467
      return methodHandle(THREAD, m);
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2468
    }
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2469
  }
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2470
  THROW_MSG_(vmSymbols::java_lang_LinkageError(), "bad value from MethodHandleNatives", empty);
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2471
  return empty;
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2472
}
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2473
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2474
methodHandle SystemDictionary::find_method_handle_invoker(Klass* klass,
36819
bca375d368ed 8149644: Integrate VarHandles
psandoz
parents: 36381
diff changeset
  2475
                                                          Symbol* name,
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2476
                                                          Symbol* signature,
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2477
                                                          Klass* accessing_klass,
13929
8da0dc50a6e4 7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents: 13753
diff changeset
  2478
                                                          Handle *appendix_result,
8da0dc50a6e4 7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents: 13753
diff changeset
  2479
                                                          Handle *method_type_result,
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2480
                                                          TRAPS) {
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2481
  methodHandle empty;
33160
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 32349
diff changeset
  2482
  assert(THREAD->can_call_java() ,"");
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2483
  Handle method_type =
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2484
    SystemDictionary::find_method_handle_type(signature, accessing_klass, CHECK_(empty));
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2485
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2486
  int ref_kind = JVM_REF_invokeVirtual;
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2487
  oop name_oop = StringTable::intern(name, CHECK_(empty));
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2488
  Handle name_str (THREAD, name_oop);
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2489
  objArrayHandle appendix_box = oopFactory::new_objArray_handle(SystemDictionary::Object_klass(), 1, CHECK_(empty));
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2490
  assert(appendix_box->obj_at(0) == NULL, "");
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2491
21103
1c85309b5895 8026502: java/lang/invoke/MethodHandleConstants.java fails on all platforms
twisti
parents: 20405
diff changeset
  2492
  // This should not happen.  JDK code should take care of that.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2493
  if (accessing_klass == NULL || method_type.is_null()) {
21103
1c85309b5895 8026502: java/lang/invoke/MethodHandleConstants.java fails on all platforms
twisti
parents: 20405
diff changeset
  2494
    THROW_MSG_(vmSymbols::java_lang_InternalError(), "bad invokehandle", empty);
1c85309b5895 8026502: java/lang/invoke/MethodHandleConstants.java fails on all platforms
twisti
parents: 20405
diff changeset
  2495
  }
1c85309b5895 8026502: java/lang/invoke/MethodHandleConstants.java fails on all platforms
twisti
parents: 20405
diff changeset
  2496
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2497
  // call java.lang.invoke.MethodHandleNatives::linkMethod(... String, MethodType) -> MemberName
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2498
  JavaCallArguments args;
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2499
  args.push_oop(Handle(THREAD, accessing_klass->java_mirror()));
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2500
  args.push_int(ref_kind);
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2501
  args.push_oop(Handle(THREAD, klass->java_mirror()));
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2502
  args.push_oop(name_str);
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2503
  args.push_oop(method_type);
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2504
  args.push_oop(appendix_box);
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2505
  JavaValue result(T_OBJECT);
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2506
  JavaCalls::call_static(&result,
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2507
                         SystemDictionary::MethodHandleNatives_klass(),
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2508
                         vmSymbols::linkMethod_name(),
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2509
                         vmSymbols::linkMethod_signature(),
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2510
                         &args, CHECK_(empty));
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2511
  Handle mname(THREAD, (oop) result.get_jobject());
13929
8da0dc50a6e4 7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents: 13753
diff changeset
  2512
  (*method_type_result) = method_type;
14588
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  2513
  return unpack_method_and_appendix(mname, accessing_klass, appendix_box, appendix_result, THREAD);
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2514
}
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2515
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2516
// Decide if we can globally cache a lookup of this class, to be returned to any client that asks.
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2517
// We must ensure that all class loaders everywhere will reach this class, for any client.
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2518
// This is a safe bet for public classes in java.lang, such as Object and String.
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2519
// We also include public classes in java.lang.invoke, because they appear frequently in system-level method types.
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2520
// Out of an abundance of caution, we do not include any other classes, not even for packages like java.util.
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2521
static bool is_always_visible_class(oop mirror) {
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2522
  Klass* klass = java_lang_Class::as_Klass(mirror);
33611
9abd65805e19 8139203: Consistent naming for klass type predicates
coleenp
parents: 33602
diff changeset
  2523
  if (klass->is_objArray_klass()) {
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2524
    klass = ObjArrayKlass::cast(klass)->bottom_klass(); // check element type
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2525
  }
33611
9abd65805e19 8139203: Consistent naming for klass type predicates
coleenp
parents: 33602
diff changeset
  2526
  if (klass->is_typeArray_klass()) {
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2527
    return true; // primitive array
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2528
  }
33611
9abd65805e19 8139203: Consistent naming for klass type predicates
coleenp
parents: 33602
diff changeset
  2529
  assert(klass->is_instance_klass(), "%s", klass->external_name());
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2530
  return klass->is_public() &&
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2531
         (InstanceKlass::cast(klass)->is_same_class_package(SystemDictionary::Object_klass()) ||       // java.lang
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2532
          InstanceKlass::cast(klass)->is_same_class_package(SystemDictionary::MethodHandle_klass()));  // java.lang.invoke
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2533
}
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2534
48826
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2535
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2536
// Return the Java mirror (java.lang.Class instance) for a single-character
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2537
// descriptor.  This result, when available, is the same as produced by the
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2538
// heavier API point of the same name that takes a Symbol.
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2539
oop SystemDictionary::find_java_mirror_for_type(char signature_char) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2540
  return java_lang_Class::primitive_mirror(char2type(signature_char));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2541
}
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2542
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2543
// Find or construct the Java mirror (java.lang.Class instance) for a
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2544
// for the given field type signature, as interpreted relative to the
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2545
// given class loader.  Handles primitives, void, references, arrays,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2546
// and all other reflectable types, except method types.
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2547
// N.B.  Code in reflection should use this entry point.
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2548
Handle SystemDictionary::find_java_mirror_for_type(Symbol* signature,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2549
                                                   Klass* accessing_klass,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2550
                                                   Handle class_loader,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2551
                                                   Handle protection_domain,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2552
                                                   SignatureStream::FailureMode failure_mode,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2553
                                                   TRAPS) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2554
  Handle empty;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2555
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2556
  assert(accessing_klass == NULL || (class_loader.is_null() && protection_domain.is_null()),
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2557
         "one or the other, or perhaps neither");
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2558
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2559
  Symbol* type = signature;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2560
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2561
  // What we have here must be a valid field descriptor,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2562
  // and all valid field descriptors are supported.
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2563
  // Produce the same java.lang.Class that reflection reports.
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2564
  if (type->utf8_length() == 1) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2565
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2566
    // It's a primitive.  (Void has a primitive mirror too.)
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2567
    char ch = (char) type->byte_at(0);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2568
    assert(is_java_primitive(char2type(ch)) || ch == 'V', "");
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2569
    return Handle(THREAD, find_java_mirror_for_type(ch));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2570
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2571
  } else if (FieldType::is_obj(type) || FieldType::is_array(type)) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2572
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2573
    // It's a reference type.
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2574
    if (accessing_klass != NULL) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2575
      class_loader      = Handle(THREAD, accessing_klass->class_loader());
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2576
      protection_domain = Handle(THREAD, accessing_klass->protection_domain());
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2577
    }
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2578
    Klass* constant_type_klass;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2579
    if (failure_mode == SignatureStream::ReturnNull) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2580
      constant_type_klass = resolve_or_null(type, class_loader, protection_domain,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2581
                                            CHECK_(empty));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2582
    } else {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2583
      bool throw_error = (failure_mode == SignatureStream::NCDFError);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2584
      constant_type_klass = resolve_or_fail(type, class_loader, protection_domain,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2585
                                            throw_error, CHECK_(empty));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2586
    }
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2587
    if (constant_type_klass == NULL) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2588
      return Handle();  // report failure this way
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2589
    }
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2590
    Handle mirror(THREAD, constant_type_klass->java_mirror());
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2591
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2592
    // Check accessibility, emulating ConstantPool::verify_constant_pool_resolve.
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2593
    if (accessing_klass != NULL) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2594
      Klass* sel_klass = constant_type_klass;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2595
      bool fold_type_to_class = true;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2596
      LinkResolver::check_klass_accessability(accessing_klass, sel_klass,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2597
                                              fold_type_to_class, CHECK_(empty));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2598
    }
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2599
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2600
    return mirror;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2601
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2602
  }
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2603
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2604
  // Fall through to an error.
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2605
  assert(false, "unsupported mirror syntax");
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2606
  THROW_MSG_(vmSymbols::java_lang_InternalError(), "unsupported mirror syntax", empty);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2607
}
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2608
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2609
8676
9098d4e927e1 7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents: 8675
diff changeset
  2610
// Ask Java code to find or construct a java.lang.invoke.MethodType for the given
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2611
// signature, as interpreted relative to the given class loader.
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2612
// Because of class loader constraints, all method handle usage must be
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2613
// consistent with this loader.
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2614
Handle SystemDictionary::find_method_handle_type(Symbol* signature,
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2615
                                                 Klass* accessing_klass,
5420
586d3988e72b 6939134: JSR 292 adjustments to method handle invocation
jrose
parents: 5124
diff changeset
  2616
                                                 TRAPS) {
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2617
  Handle empty;
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2618
  vmIntrinsics::ID null_iid = vmIntrinsics::_none;  // distinct from all method handle invoker intrinsics
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2619
  unsigned int hash  = invoke_method_table()->compute_hash(signature, null_iid);
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2620
  int          index = invoke_method_table()->hash_to_index(hash);
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2621
  SymbolPropertyEntry* spe = invoke_method_table()->find_entry(index, hash, signature, null_iid);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2622
  if (spe != NULL && spe->method_type() != NULL) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2623
    assert(java_lang_invoke_MethodType::is_instance(spe->method_type()), "");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2624
    return Handle(THREAD, spe->method_type());
33160
c59f1676d27e 8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents: 32349
diff changeset
  2625
  } else if (!THREAD->can_call_java()) {
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2626
    warning("SystemDictionary::find_method_handle_type called from compiler thread");  // FIXME
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2627
    return Handle();  // do not attempt from within compiler, unless it was cached
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2628
  }
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2629
5421
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2630
  Handle class_loader, protection_domain;
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2631
  if (accessing_klass != NULL) {
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2632
    class_loader      = Handle(THREAD, accessing_klass->class_loader());
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2633
    protection_domain = Handle(THREAD, accessing_klass->protection_domain());
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2634
  }
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2635
  bool can_be_cached = true;
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2636
  int npts = ArgumentCount(signature).size();
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2637
  objArrayHandle pts = oopFactory::new_objArray_handle(SystemDictionary::Class_klass(), npts, CHECK_(empty));
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2638
  int arg = 0;
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2639
  Handle rt; // the return type from the signature
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2640
  ResourceMark rm(THREAD);
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2641
  for (SignatureStream ss(signature); !ss.is_done(); ss.next()) {
5421
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2642
    oop mirror = NULL;
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2643
    if (can_be_cached) {
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2644
      // Use neutral class loader to lookup candidate classes to be placed in the cache.
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2645
      mirror = ss.as_java_mirror(Handle(), Handle(),
5421
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2646
                                 SignatureStream::ReturnNull, CHECK_(empty));
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2647
      if (mirror == NULL || (ss.is_object() && !is_always_visible_class(mirror))) {
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2648
        // Fall back to accessing_klass context.
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2649
        can_be_cached = false;
5421
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2650
      }
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2651
    }
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2652
    if (!can_be_cached) {
5421
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2653
      // Resolve, throwing a real error if it doesn't work.
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2654
      mirror = ss.as_java_mirror(class_loader, protection_domain,
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2655
                                 SignatureStream::NCDFError, CHECK_(empty));
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2656
    }
49592
77fb0be7d19f 8199946: Move load/store and encode/decode out of oopDesc
stefank
parents: 49352
diff changeset
  2657
    assert(mirror != NULL, "%s", ss.as_symbol(THREAD)->as_C_string());
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2658
    if (ss.at_return_type())
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2659
      rt = Handle(THREAD, mirror);
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2660
    else
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2661
      pts->obj_at_put(arg++, mirror);
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2662
5421
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2663
    // Check accessibility.
48826
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2664
    if (!java_lang_Class::is_primitive(mirror) && accessing_klass != NULL) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2665
      Klass* sel_klass = java_lang_Class::as_Klass(mirror);
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2666
      mirror = NULL;  // safety
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2667
      // Emulate ConstantPool::verify_constant_pool_resolve.
48826
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2668
      bool fold_type_to_class = true;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2669
      LinkResolver::check_klass_accessability(accessing_klass, sel_klass,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2670
                                              fold_type_to_class, CHECK_(empty));
5421
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2671
    }
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2672
  }
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2673
  assert(arg == npts, "");
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2674
42074
c069e5e285cb 8166974: invokedynamic implementation should not wrap Errors
psandoz
parents: 41739
diff changeset
  2675
  // call java.lang.invoke.MethodHandleNatives::findMethodHandleType(Class rt, Class[] pts) -> MethodType
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2676
  JavaCallArguments args(Handle(THREAD, rt()));
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2677
  args.push_oop(pts);
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2678
  JavaValue result(T_OBJECT);
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2679
  JavaCalls::call_static(&result,
5420
586d3988e72b 6939134: JSR 292 adjustments to method handle invocation
jrose
parents: 5124
diff changeset
  2680
                         SystemDictionary::MethodHandleNatives_klass(),
586d3988e72b 6939134: JSR 292 adjustments to method handle invocation
jrose
parents: 5124
diff changeset
  2681
                         vmSymbols::findMethodHandleType_name(),
9116
9bc44be338d6 6981791: remove experimental code for JSR 292
jrose
parents: 8883
diff changeset
  2682
                         vmSymbols::findMethodHandleType_signature(),
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2683
                         &args, CHECK_(empty));
6463
f4362c8da849 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 6062
diff changeset
  2684
  Handle method_type(THREAD, (oop) result.get_jobject());
f4362c8da849 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 6062
diff changeset
  2685
31638
465816a45807 8075838: Method for typing MethodTypes
vlivanov
parents: 30764
diff changeset
  2686
  if (can_be_cached) {
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2687
    // We can cache this MethodType inside the JVM.
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2688
    MutexLocker ml(SystemDictionary_lock, THREAD);
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2689
    spe = invoke_method_table()->find_entry(index, hash, signature, null_iid);
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2690
    if (spe == NULL)
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2691
      spe = invoke_method_table()->add_entry(index, hash, signature, null_iid);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2692
    if (spe->method_type() == NULL) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents: 13391
diff changeset
  2693
      spe->set_method_type(method_type());
6463
f4362c8da849 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 6062
diff changeset
  2694
    }
f4362c8da849 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 6062
diff changeset
  2695
  }
5421
e294db54fc0d 6939196: method handle signatures off the boot class path get linkage errors
jrose
parents: 5420
diff changeset
  2696
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2697
  // report back to the caller with the MethodType
6463
f4362c8da849 6939224: MethodHandle.invokeGeneric needs to perform the correct set of conversions
jrose
parents: 6062
diff changeset
  2698
  return method_type;
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2699
}
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2700
48514
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2701
Handle SystemDictionary::find_field_handle_type(Symbol* signature,
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2702
                                                Klass* accessing_klass,
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2703
                                                TRAPS) {
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2704
  Handle empty;
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2705
  ResourceMark rm(THREAD);
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2706
  SignatureStream ss(signature, /*is_method=*/ false);
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2707
  if (!ss.is_done()) {
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2708
    Handle class_loader, protection_domain;
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2709
    if (accessing_klass != NULL) {
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2710
      class_loader      = Handle(THREAD, accessing_klass->class_loader());
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2711
      protection_domain = Handle(THREAD, accessing_klass->protection_domain());
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2712
    }
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2713
    oop mirror = ss.as_java_mirror(class_loader, protection_domain, SignatureStream::NCDFError, CHECK_(empty));
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2714
    ss.next();
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2715
    if (ss.is_done()) {
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2716
      return Handle(THREAD, mirror);
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2717
    }
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2718
  }
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2719
  return empty;
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2720
}
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2721
5882
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2722
// Ask Java code to find or construct a method handle constant.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2723
Handle SystemDictionary::link_method_handle_constant(Klass* caller,
5882
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2724
                                                     int ref_kind, //e.g., JVM_REF_invokeVirtual
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2725
                                                     Klass* callee,
48514
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2726
                                                     Symbol* name,
8076
96d498ec7ae1 6990754: Use native memory and reference counting to implement SymbolTable
coleenp
parents: 7426
diff changeset
  2727
                                                     Symbol* signature,
5882
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2728
                                                     TRAPS) {
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2729
  Handle empty;
48514
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2730
  if (caller == NULL) {
21103
1c85309b5895 8026502: java/lang/invoke/MethodHandleConstants.java fails on all platforms
twisti
parents: 20405
diff changeset
  2731
    THROW_MSG_(vmSymbols::java_lang_InternalError(), "bad MH constant", empty);
5882
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2732
  }
48514
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2733
  Handle name_str      = java_lang_String::create_from_symbol(name,      CHECK_(empty));
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2734
  Handle signature_str = java_lang_String::create_from_symbol(signature, CHECK_(empty));
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2735
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2736
  // Put symbolic info from the MH constant into freshly created MemberName and resolve it.
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2737
  Handle mname = MemberName_klass()->allocate_instance_handle(CHECK_(empty));
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2738
  java_lang_invoke_MemberName::set_clazz(mname(), callee->java_mirror());
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2739
  java_lang_invoke_MemberName::set_name (mname(), name_str());
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2740
  java_lang_invoke_MemberName::set_type (mname(), signature_str());
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2741
  java_lang_invoke_MemberName::set_flags(mname(), MethodHandles::ref_kind_to_flags(ref_kind));
48596
860326263d1f 8194963: SystemDictionary::link_method_handle_constant() can't link MethodHandle.invoke()/invokeExact()
vlivanov
parents: 48514
diff changeset
  2742
860326263d1f 8194963: SystemDictionary::link_method_handle_constant() can't link MethodHandle.invoke()/invokeExact()
vlivanov
parents: 48514
diff changeset
  2743
  if (ref_kind == JVM_REF_invokeVirtual &&
50771
9ca95539747d 8195650: Method references to VarHandle accessors
psandoz
parents: 50735
diff changeset
  2744
      MethodHandles::is_signature_polymorphic_public_name(callee, name)) {
9ca95539747d 8195650: Method references to VarHandle accessors
psandoz
parents: 50735
diff changeset
  2745
    // Skip resolution for public signature polymorphic methods such as
9ca95539747d 8195650: Method references to VarHandle accessors
psandoz
parents: 50735
diff changeset
  2746
    // j.l.i.MethodHandle.invoke()/invokeExact() and those on VarHandle
9ca95539747d 8195650: Method references to VarHandle accessors
psandoz
parents: 50735
diff changeset
  2747
    // They require appendix argument which MemberName resolution doesn't handle.
9ca95539747d 8195650: Method references to VarHandle accessors
psandoz
parents: 50735
diff changeset
  2748
    // There's special logic on JDK side to handle them
48596
860326263d1f 8194963: SystemDictionary::link_method_handle_constant() can't link MethodHandle.invoke()/invokeExact()
vlivanov
parents: 48514
diff changeset
  2749
    // (see MethodHandles.linkMethodHandleConstant() and MethodHandles.findVirtualForMH()).
860326263d1f 8194963: SystemDictionary::link_method_handle_constant() can't link MethodHandle.invoke()/invokeExact()
vlivanov
parents: 48514
diff changeset
  2750
  } else {
49641
2ad3212a7dd9 8200238: Reduce number of exceptions created when calling MemberName$Factory::resolveOrNull
redestad
parents: 49594
diff changeset
  2751
    MethodHandles::resolve_MemberName(mname, caller, /*speculative_resolve*/false, CHECK_(empty));
48596
860326263d1f 8194963: SystemDictionary::link_method_handle_constant() can't link MethodHandle.invoke()/invokeExact()
vlivanov
parents: 48514
diff changeset
  2752
  }
48514
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2753
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2754
  // After method/field resolution succeeded, it's safe to resolve MH signature as well.
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2755
  Handle type = MethodHandles::resolve_MemberName_type(mname, caller, CHECK_(empty));
5882
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2756
8676
9098d4e927e1 7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents: 8675
diff changeset
  2757
  // call java.lang.invoke.MethodHandleNatives::linkMethodHandleConstant(Class caller, int refKind, Class callee, String name, Object type) -> MethodHandle
5882
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2758
  JavaCallArguments args;
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2759
  args.push_oop(Handle(THREAD, caller->java_mirror()));  // the referring class
5882
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2760
  args.push_int(ref_kind);
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2761
  args.push_oop(Handle(THREAD, callee->java_mirror()));  // the target class
48514
9608f7f41c4e 8188145: MethodHandle resolution should follow JVMS sequence of lookup by name & type before type descriptor resolution
vlivanov
parents: 48138
diff changeset
  2762
  args.push_oop(name_str);
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2763
  args.push_oop(type);
5882
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2764
  JavaValue result(T_OBJECT);
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2765
  JavaCalls::call_static(&result,
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2766
                         SystemDictionary::MethodHandleNatives_klass(),
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2767
                         vmSymbols::linkMethodHandleConstant_name(),
9116
9bc44be338d6 6981791: remove experimental code for JSR 292
jrose
parents: 8883
diff changeset
  2768
                         vmSymbols::linkMethodHandleConstant_signature(),
5882
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2769
                         &args, CHECK_(empty));
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2770
  return Handle(THREAD, (oop) result.get_jobject());
6b2aecc4f7d8 6939203: JSR 292 needs method handle constants
jrose
parents: 5547
diff changeset
  2771
}
2534
08dac9ce0cd7 6655638: dynamic languages need method handles
jrose
parents: 2332
diff changeset
  2772
48826
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2773
// Ask Java to compute a constant by invoking a BSM given a Dynamic_info CP entry
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2774
Handle SystemDictionary::link_dynamic_constant(Klass* caller,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2775
                                               int condy_index,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2776
                                               Handle bootstrap_specifier,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2777
                                               Symbol* name,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2778
                                               Symbol* type,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2779
                                               TRAPS) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2780
  Handle empty;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2781
  Handle bsm, info;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2782
  if (java_lang_invoke_MethodHandle::is_instance(bootstrap_specifier())) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2783
    bsm = bootstrap_specifier;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2784
  } else {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2785
    assert(bootstrap_specifier->is_objArray(), "");
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2786
    objArrayOop args = (objArrayOop) bootstrap_specifier();
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2787
    assert(args->length() == 2, "");
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2788
    bsm  = Handle(THREAD, args->obj_at(0));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2789
    info = Handle(THREAD, args->obj_at(1));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2790
  }
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2791
  guarantee(java_lang_invoke_MethodHandle::is_instance(bsm()),
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2792
            "caller must supply a valid BSM");
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2793
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2794
  // This should not happen.  JDK code should take care of that.
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2795
  if (caller == NULL) {
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2796
    THROW_MSG_(vmSymbols::java_lang_InternalError(), "bad dynamic constant", empty);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2797
  }
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2798
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2799
  Handle constant_name = java_lang_String::create_from_symbol(name, CHECK_(empty));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2800
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2801
  // Resolve the constant type in the context of the caller class
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2802
  Handle type_mirror = find_java_mirror_for_type(type, caller, SignatureStream::NCDFError,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2803
                                                 CHECK_(empty));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2804
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2805
  // call java.lang.invoke.MethodHandleNatives::linkConstantDyanmic(caller, condy_index, bsm, type, info)
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2806
  JavaCallArguments args;
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2807
  args.push_oop(Handle(THREAD, caller->java_mirror()));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2808
  args.push_int(condy_index);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2809
  args.push_oop(bsm);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2810
  args.push_oop(constant_name);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2811
  args.push_oop(type_mirror);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2812
  args.push_oop(info);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2813
  JavaValue result(T_OBJECT);
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2814
  JavaCalls::call_static(&result,
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2815
                         SystemDictionary::MethodHandleNatives_klass(),
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2816
                         vmSymbols::linkDynamicConstant_name(),
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2817
                         vmSymbols::linkDynamicConstant_signature(),
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2818
                         &args, CHECK_(empty));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2819
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2820
  return Handle(THREAD, (oop) result.get_jobject());
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2821
}
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2822
8676
9098d4e927e1 7012648: move JSR 292 to package java.lang.invoke and adjust names
jrose
parents: 8675
diff changeset
  2823
// Ask Java code to find or construct a java.lang.invoke.CallSite for the given
2570
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2534
diff changeset
  2824
// name and signature, as interpreted relative to the given class loader.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2825
methodHandle SystemDictionary::find_dynamic_call_site_invoker(Klass* caller,
48826
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2826
                                                              int indy_index,
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2827
                                                              Handle bootstrap_specifier,
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2828
                                                              Symbol* name,
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2829
                                                              Symbol* type,
13929
8da0dc50a6e4 7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents: 13753
diff changeset
  2830
                                                              Handle *appendix_result,
8da0dc50a6e4 7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents: 13753
diff changeset
  2831
                                                              Handle *method_type_result,
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2832
                                                              TRAPS) {
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2833
  methodHandle empty;
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2834
  Handle bsm, info;
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2835
  if (java_lang_invoke_MethodHandle::is_instance(bootstrap_specifier())) {
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2836
    bsm = bootstrap_specifier;
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2837
  } else {
48826
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2838
    objArrayOop args = (objArrayOop) bootstrap_specifier();
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2839
    assert(args->length() == 2, "");
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2840
    bsm  = Handle(THREAD, args->obj_at(0));
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2841
    info = Handle(THREAD, args->obj_at(1));
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2842
  }
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2843
  guarantee(java_lang_invoke_MethodHandle::is_instance(bsm()),
6062
bab93afe9df7 6964498: JSR 292 invokedynamic sites need local bootstrap methods
jrose
parents: 5882
diff changeset
  2844
            "caller must supply a valid BSM");
bab93afe9df7 6964498: JSR 292 invokedynamic sites need local bootstrap methods
jrose
parents: 5882
diff changeset
  2845
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2846
  Handle method_name = java_lang_String::create_from_symbol(name, CHECK_(empty));
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2847
  Handle method_type = find_method_handle_type(type, caller, CHECK_(empty));
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2848
21103
1c85309b5895 8026502: java/lang/invoke/MethodHandleConstants.java fails on all platforms
twisti
parents: 20405
diff changeset
  2849
  // This should not happen.  JDK code should take care of that.
46329
53ccc37bda19 8155672: Remove instanceKlassHandles and KlassHandles
coleenp
parents: 46327
diff changeset
  2850
  if (caller == NULL || method_type.is_null()) {
21103
1c85309b5895 8026502: java/lang/invoke/MethodHandleConstants.java fails on all platforms
twisti
parents: 20405
diff changeset
  2851
    THROW_MSG_(vmSymbols::java_lang_InternalError(), "bad invokedynamic", empty);
1c85309b5895 8026502: java/lang/invoke/MethodHandleConstants.java fails on all platforms
twisti
parents: 20405
diff changeset
  2852
  }
1c85309b5895 8026502: java/lang/invoke/MethodHandleConstants.java fails on all platforms
twisti
parents: 20405
diff changeset
  2853
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2854
  objArrayHandle appendix_box = oopFactory::new_objArray_handle(SystemDictionary::Object_klass(), 1, CHECK_(empty));
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2855
  assert(appendix_box->obj_at(0) == NULL, "");
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2856
48826
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2857
  // call java.lang.invoke.MethodHandleNatives::linkCallSite(caller, indy_index, bsm, name, mtype, info, &appendix)
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2858
  JavaCallArguments args;
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2859
  args.push_oop(Handle(THREAD, caller->java_mirror()));
48826
c4d9d1b08e2e 8186209: Tool support for ConstantDynamic
psandoz
parents: 48596
diff changeset
  2860
  args.push_int(indy_index);
46271
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2861
  args.push_oop(bsm);
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2862
  args.push_oop(method_name);
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2863
  args.push_oop(method_type);
979ebd346ecf 8169881: Remove implicit Handle conversions oop->Handle
coleenp
parents: 42876
diff changeset
  2864
  args.push_oop(info);
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2865
  args.push_oop(appendix_box);
2570
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2534
diff changeset
  2866
  JavaValue result(T_OBJECT);
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2534
diff changeset
  2867
  JavaCalls::call_static(&result,
5420
586d3988e72b 6939134: JSR 292 adjustments to method handle invocation
jrose
parents: 5124
diff changeset
  2868
                         SystemDictionary::MethodHandleNatives_klass(),
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2869
                         vmSymbols::linkCallSite_name(),
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2870
                         vmSymbols::linkCallSite_signature(),
2570
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2534
diff changeset
  2871
                         &args, CHECK_(empty));
13391
30245956af37 7023639: JSR 292 method handle invocation needs a fast path for compiled code
twisti
parents: 13286
diff changeset
  2872
  Handle mname(THREAD, (oop) result.get_jobject());
13929
8da0dc50a6e4 7200949: JSR 292: rubybench/bench/time/bench_base64.rb fails with jruby.jar not on boot class path
twisti
parents: 13753
diff changeset
  2873
  (*method_type_result) = method_type;
14588
8ec26d2d9339 8000662: NPG: nashorn ant clean test262 out-of-memory with Java heap
coleenp
parents: 14488
diff changeset
  2874
  return unpack_method_and_appendix(mname, caller, appendix_box, appendix_result, THREAD);
2570
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2534
diff changeset
  2875
}
ecc7862946d4 6655646: dynamic languages need dynamically linked call sites
jrose
parents: 2534
diff changeset
  2876
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2877
// Protection domain cache table handling
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2878
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2879
ProtectionDomainCacheEntry* SystemDictionary::cache_get(Handle protection_domain) {
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2880
  return _pd_cache_table->get(protection_domain);
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2881
}
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2882
47761
1b0566927c7a 8190191: Subclasses of jdk.jfr.Event loaded from CDS breaks -XX:FlightRecorderOptions=retransform=false
iklam
parents: 47673
diff changeset
  2883
#if INCLUDE_CDS
46746
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2884
void SystemDictionary::reorder_dictionary_for_sharing() {
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2885
  ClassLoaderData::the_null_class_loader_data()->dictionary()->reorder_dictionary_for_sharing();
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2886
}
47761
1b0566927c7a 8190191: Subclasses of jdk.jfr.Event loaded from CDS breaks -XX:FlightRecorderOptions=retransform=false
iklam
parents: 47673
diff changeset
  2887
#endif
46746
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2888
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2889
size_t SystemDictionary::count_bytes_for_buckets() {
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2890
  return ClassLoaderData::the_null_class_loader_data()->dictionary()->count_bytes_for_buckets();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2891
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2892
46746
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2893
size_t SystemDictionary::count_bytes_for_table() {
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2894
  return ClassLoaderData::the_null_class_loader_data()->dictionary()->count_bytes_for_table();
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2895
}
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2896
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2897
void SystemDictionary::copy_buckets(char* top, char* end) {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2898
  ClassLoaderData::the_null_class_loader_data()->dictionary()->copy_buckets(top, end);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2899
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2900
46746
ea379ebb9447 8072061: Automatically determine optimal sizes for the CDS regions
iklam
parents: 46742
diff changeset
  2901
void SystemDictionary::copy_table(char* top, char* end) {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2902
  ClassLoaderData::the_null_class_loader_data()->dictionary()->copy_table(top, end);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2903
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2904
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2905
// ----------------------------------------------------------------------------
46742
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2906
void SystemDictionary::print_shared(outputStream *st) {
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2907
  shared_dictionary()->print_on(st);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25492
diff changeset
  2908
}
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2909
46742
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2910
void SystemDictionary::print_on(outputStream *st) {
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2911
  if (shared_dictionary() != NULL) {
46747
7b6570052b58 8130072: Add a flag to print out statistics for both system dictionary and shared dictionary
coleenp
parents: 46746
diff changeset
  2912
    st->print_cr("Shared Dictionary");
46742
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2913
    shared_dictionary()->print_on(st);
46747
7b6570052b58 8130072: Add a flag to print out statistics for both system dictionary and shared dictionary
coleenp
parents: 46746
diff changeset
  2914
    st->cr();
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2915
  }
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2916
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2917
  GCMutexLocker mu(SystemDictionary_lock);
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2918
46742
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2919
  ClassLoaderDataGraph::print_dictionary(st);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2920
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2921
  // Placeholders
46742
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2922
  placeholders()->print_on(st);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2923
  st->cr();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2924
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2925
  // loader constraints - print under SD_lock
46742
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2926
  constraints()->print_on(st);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2927
  st->cr();
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2928
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2929
  _pd_cache_table->print_on(st);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2930
  st->cr();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2931
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2932
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2933
void SystemDictionary::verify() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2934
  guarantee(constraints() != NULL,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2935
            "Verify of loader constraints failed");
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2936
  guarantee(placeholders()->number_of_entries() >= 0,
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2937
            "Verify of placeholders failed");
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2938
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2939
  GCMutexLocker mu(SystemDictionary_lock);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2940
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2941
  // Verify dictionary
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2942
  ClassLoaderDataGraph::verify_dictionary();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2943
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2944
  placeholders()->verify();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2945
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2946
  // Verify constraint table
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2947
  guarantee(constraints() != NULL, "Verify of loader constraints failed");
46729
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2948
  constraints()->verify(placeholders());
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2949
c62d2e8b2728 7133093: Improve system dictionary performance
coleenp
parents: 46701
diff changeset
  2950
  _pd_cache_table->verify();
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2951
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2952
46742
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2953
void SystemDictionary::dump(outputStream *st, bool verbose) {
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2954
  assert_locked_or_safepoint(SystemDictionary_lock);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2955
  if (verbose) {
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2956
    print_on(st);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2957
  } else {
46747
7b6570052b58 8130072: Add a flag to print out statistics for both system dictionary and shared dictionary
coleenp
parents: 46746
diff changeset
  2958
    if (shared_dictionary() != NULL) {
7b6570052b58 8130072: Add a flag to print out statistics for both system dictionary and shared dictionary
coleenp
parents: 46746
diff changeset
  2959
      shared_dictionary()->print_table_statistics(st, "Shared Dictionary");
7b6570052b58 8130072: Add a flag to print out statistics for both system dictionary and shared dictionary
coleenp
parents: 46746
diff changeset
  2960
    }
46742
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2961
    ClassLoaderDataGraph::print_dictionary_statistics(st);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2962
    placeholders()->print_table_statistics(st, "Placeholder Table");
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2963
    constraints()->print_table_statistics(st, "LoaderConstraints Table");
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2964
    _pd_cache_table->print_table_statistics(st, "ProtectionDomainCache Table");
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2965
  }
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2966
}
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2967
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2968
// Utility for dumping dictionaries.
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2969
SystemDictionaryDCmd::SystemDictionaryDCmd(outputStream* output, bool heap) :
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2970
                                 DCmdWithParser(output, heap),
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2971
  _verbose("-verbose", "Dump the content of each dictionary entry for all class loaders",
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2972
           "BOOLEAN", false, "false") {
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2973
  _dcmdparser.add_dcmd_option(&_verbose);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2974
}
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2975
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2976
void SystemDictionaryDCmd::execute(DCmdSource source, TRAPS) {
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2977
  VM_DumpHashtable dumper(output(), VM_DumpHashtable::DumpSysDict,
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2978
                         _verbose.value());
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2979
  VMThread::execute(&dumper);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2980
}
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2981
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2982
int SystemDictionaryDCmd::num_arguments() {
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2983
  ResourceMark rm;
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2984
  SystemDictionaryDCmd* dcmd = new SystemDictionaryDCmd(NULL, false);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2985
  if (dcmd != NULL) {
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2986
    DCmdMark mark(dcmd);
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2987
    return dcmd->_dcmdparser.num_arguments();
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2988
  } else {
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2989
    return 0;
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2990
  }
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2991
}
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  2992
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  2993
class CombineDictionariesClosure : public CLDClosure {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  2994
  private:
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  2995
    Dictionary* _master_dictionary;
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  2996
  public:
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  2997
    CombineDictionariesClosure(Dictionary* master_dictionary) :
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  2998
      _master_dictionary(master_dictionary) {}
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  2999
    void do_cld(ClassLoaderData* cld) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3000
      ResourceMark rm;
49352
0b48f0aa79ec 8191585: VM anonymous classes created during CDS dump time cause crash
iklam
parents: 49348
diff changeset
  3001
      if (cld->is_anonymous()) {
0b48f0aa79ec 8191585: VM anonymous classes created during CDS dump time cause crash
iklam
parents: 49348
diff changeset
  3002
        return;
0b48f0aa79ec 8191585: VM anonymous classes created during CDS dump time cause crash
iklam
parents: 49348
diff changeset
  3003
      }
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3004
      if (cld->is_system_class_loader_data() || cld->is_platform_class_loader_data()) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3005
        for (int i = 0; i < cld->dictionary()->table_size(); ++i) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3006
          Dictionary* curr_dictionary = cld->dictionary();
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3007
          DictionaryEntry* p = curr_dictionary->bucket(i);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3008
          while (p != NULL) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3009
            Symbol* name = p->instance_klass()->name();
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3010
            unsigned int d_hash = _master_dictionary->compute_hash(name);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3011
            int d_index = _master_dictionary->hash_to_index(d_hash);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3012
            DictionaryEntry* next = p->next();
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3013
            if (p->literal()->class_loader_data() != cld) {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3014
              // This is an initiating class loader entry; don't use it
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3015
              log_trace(cds)("Skipping initiating cl entry: %s", name->as_C_string());
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3016
              curr_dictionary->free_entry(p);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3017
            } else {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3018
              log_trace(cds)("Moved to boot dictionary: %s", name->as_C_string());
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3019
              curr_dictionary->unlink_entry(p);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3020
              p->set_pd_set(NULL); // pd_set is runtime only information and will be reconstructed.
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3021
              _master_dictionary->add_entry(d_index, p);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3022
            }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3023
            p = next;
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3024
          }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3025
          *curr_dictionary->bucket_addr(i) = NULL;
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3026
        }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3027
      }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3028
    }
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3029
};
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3030
49332
cd21aff24069 8193434: [GRAAL] Graal classes are not loaded with -Xshare:dump
ccheung
parents: 49037
diff changeset
  3031
// Combining platform and system loader dictionaries into boot loader dictionary.
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3032
// During run time, we only have one shared dictionary.
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3033
void SystemDictionary::combine_shared_dictionaries() {
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3034
  assert(DumpSharedSpaces, "dump time only");
49931
840e26123940 8193213: Make the UseAppCDS option obsolete.
jiangli
parents: 49818
diff changeset
  3035
  Dictionary* master_dictionary = ClassLoaderData::the_null_class_loader_data()->dictionary();
840e26123940 8193213: Make the UseAppCDS option obsolete.
jiangli
parents: 49818
diff changeset
  3036
  CombineDictionariesClosure cdc(master_dictionary);
840e26123940 8193213: Make the UseAppCDS option obsolete.
jiangli
parents: 49818
diff changeset
  3037
  ClassLoaderDataGraph::cld_do(&cdc);
47103
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3038
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3039
  // These tables are no longer valid or necessary. Keeping them around will
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3040
  // cause SystemDictionary::verify() to fail. Let's empty them.
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3041
  _placeholders        = new PlaceholderTable(_placeholder_table_size);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3042
  _loader_constraints  = new LoaderConstraintTable(_loader_constraint_size);
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3043
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3044
  NOT_PRODUCT(SystemDictionary::verify());
a993ec29ec75 8186842: Use Java class loaders for creating the CDS archive
ccheung
parents: 47098
diff changeset
  3045
}
46742
24ec8a039c90 8184994: Add Dictionary size logging and jcmd
coleenp
parents: 46729
diff changeset
  3046
49738
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3047
void SystemDictionary::initialize_oop_storage() {
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3048
  _vm_weak_oop_storage =
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3049
    new OopStorage("VM Weak Oop Handles",
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3050
                   VMWeakAlloc_lock,
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3051
                   VMWeakActive_lock);
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3052
}
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3053
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3054
OopStorage* SystemDictionary::vm_weak_oop_storage() {
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3055
  assert(_vm_weak_oop_storage != NULL, "Uninitialized");
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3056
  return _vm_weak_oop_storage;
a7bc87a63dd8 8198313: Wrap holder object for ClassLoaderData in a WeakHandle
coleenp
parents: 49658
diff changeset
  3057
}