107 lines
3.6 KiB
C++
107 lines
3.6 KiB
C++
/*
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* Copyright (c) 2019, 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_VM_MEMORY_DYNAMICARCHIVE_HPP
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#define SHARE_VM_MEMORY_DYNAMICARCHIVE_HPP
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#if INCLUDE_CDS
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#include "classfile/compactHashtable.hpp"
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#include "memory/allocation.hpp"
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#include "memory/filemap.hpp"
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#include "memory/memRegion.hpp"
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#include "memory/virtualspace.hpp"
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#include "oops/oop.hpp"
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#include "utilities/exceptions.hpp"
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#include "utilities/macros.hpp"
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#include "utilities/resourceHash.hpp"
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class DynamicArchiveHeader : public FileMapHeader {
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friend class CDSOffsets;
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private:
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int _base_header_crc;
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int _base_region_crc[MetaspaceShared::n_regions];
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public:
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int base_header_crc() const { return _base_header_crc; }
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int base_region_crc(int i) const {
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assert(is_valid_region(i), "must be");
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return _base_region_crc[i];
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}
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void set_base_header_crc(int c) { _base_header_crc = c; }
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void set_base_region_crc(int i, int c) {
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assert(is_valid_region(i), "must be");
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_base_region_crc[i] = c;
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}
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};
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class DynamicArchive : AllStatic {
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static class DynamicArchiveBuilder* _builder;
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static address original_to_target_impl(address orig_obj);
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static address original_to_buffer_impl(address orig_obj);
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static address buffer_to_target_impl(address buff_obj);
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public:
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static void dump();
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// obj is a copy of a MetaspaceObj, stored in the dumping buffer.
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//
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// The return value is the runtime targeted location of this object as
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// mapped from the dynamic archive.
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template <typename T> static T buffer_to_target(T buff_obj) {
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return (T)buffer_to_target_impl(address(buff_obj));
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}
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// obj is an original MetaspaceObj used by the JVM (e.g., a valid Symbol* in the
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// SymbolTable).
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//
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// The return value is the runtime targeted location of this object as
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// mapped from the dynamic archive.
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template <typename T> static T original_to_target(T obj) {
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return (T)original_to_target_impl(address(obj));
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}
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// obj is an original MetaspaceObj use by the JVM (e.g., a valid Symbol* in the
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// SymbolTable).
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//
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// The return value is the location of this object in the dump time
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// buffer space
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template <typename T> static T original_to_buffer(T obj) {
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return (T)original_to_buffer_impl(address(obj));
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}
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// Delta of this object from SharedBaseAddress
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static uintx object_delta_uintx(void* buff_obj);
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// Does obj point to an address inside the runtime target space of the dynamic
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// archive?
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static bool is_in_target_space(void *obj);
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static bool is_mapped() { return FileMapInfo::dynamic_info() != NULL; }
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static bool validate(FileMapInfo* dynamic_info);
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};
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#endif // INCLUDE_CDS
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#endif // SHARE_VM_MEMORY_DYNAMICARCHIVE_HPP
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