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82 lines
3.8 KiB
C++
82 lines
3.8 KiB
C++
/*
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* Copyright (c) 2024, 2026, 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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#ifndef SHARE_CDS_AOTLINKEDCLASSBULKLOADER_HPP
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#define SHARE_CDS_AOTLINKEDCLASSBULKLOADER_HPP
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#include "memory/allocation.hpp"
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#include "memory/allStatic.hpp"
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#include "runtime/handles.hpp"
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#include "utilities/exceptions.hpp"
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#include "utilities/macros.hpp"
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class AOTLinkedClassTable;
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class ClassLoaderData;
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class InstanceKlass;
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class SerializeClosure;
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template <typename T> class Array;
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enum class AOTLinkedClassCategory : int;
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// During a Production Run, the AOTLinkedClassBulkLoader loads all classes from
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// the AOTLinkedClassTable into their respective ClassLoaders. This happens very early
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// in the JVM bootstrap stage, before any Java bytecode is executed.
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//
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// IMPLEMENTATION NOTES:
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// We also proactively link all the classes in the AOTLinkedClassTable, and move
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// the AOT-initialized classes to the "initialized" state. Due to limitations
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// of the current JVM bootstrap sequence, link_or_init_javabase_classes() and
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// link_or_init_non_javabase_classes() need to be called after some Java bytecodes are
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// executed. Future RFEs will move these calls to earlier stages.
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class AOTLinkedClassBulkLoader : AllStatic {
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static void preload_classes_impl(TRAPS);
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static void preload_classes_in_table(Array<InstanceKlass*>* classes,
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const char* category_name, Handle loader, TRAPS);
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static void initiate_loading(JavaThread* current, const char* category, Handle initiating_loader, Array<InstanceKlass*>* classes);
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static void link_classes_impl(TRAPS);
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static void link_classes_in_table(Array<InstanceKlass*>* classes, TRAPS);
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static void init_non_javabase_classes_impl(TRAPS);
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static void init_classes_for_loader(Handle class_loader, Array<InstanceKlass*>* classes, bool early_only, TRAPS);
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static void replay_training_at_init(Array<InstanceKlass*>* classes, TRAPS) NOT_CDS_RETURN;
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#ifdef ASSERT
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static void validate_module_of_preloaded_classes();
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static void validate_module_of_preloaded_classes_in_table(Array<InstanceKlass*>* classes,
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const char* category_name, Handle loader);
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static void validate_module(Klass* k, const char* category_name, oop module_oop);
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#endif
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public:
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static void serialize(SerializeClosure* soc) NOT_CDS_RETURN;
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static void preload_classes(JavaThread* current) NOT_CDS_RETURN;
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static void link_classes(JavaThread* current) NOT_CDS_RETURN;
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static void init_javabase_classes(JavaThread* current) NOT_CDS_RETURN;
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static void init_non_javabase_classes(JavaThread* current) NOT_CDS_RETURN;
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static void exit_on_exception(JavaThread* current);
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static void replay_training_at_init_for_preloaded_classes(TRAPS) NOT_CDS_RETURN;
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static bool is_initializing_classes_early() NOT_DEBUG({return false;});
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};
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#endif // SHARE_CDS_AOTLINKEDCLASSBULKLOADER_HPP
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