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50 lines
2.0 KiB
C++
50 lines
2.0 KiB
C++
/*
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* Copyright (c) 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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#include "cds/aotMappedHeap.hpp"
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// Anything that goes in the header must be thoroughly purged from uninitialized memory
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// as it will be written to disk. Therefore, the constructors memset the memory to 0.
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// This is not the prettiest thing, but we need to know every byte is initialized,
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// including potential padding between fields.
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AOTMappedHeapHeader::AOTMappedHeapHeader(size_t ptrmap_start_pos,
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size_t oopmap_start_pos,
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HeapRootSegments root_segments) {
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memset((char*)this, 0, sizeof(*this));
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_ptrmap_start_pos = ptrmap_start_pos;
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_oopmap_start_pos = oopmap_start_pos;
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_root_segments = root_segments;
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}
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AOTMappedHeapHeader::AOTMappedHeapHeader() {
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memset((char*)this, 0, sizeof(*this));
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}
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AOTMappedHeapHeader AOTMappedHeapInfo::create_header() {
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return AOTMappedHeapHeader{_ptrmap_start_pos,
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_oopmap_start_pos,
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_root_segments};
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}
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