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c0342a0ab5
When header is included for the first time in translation unit, then preprocessor simply copy-pastes its content. If we define a constant in a header file and this constant has internal linkage then each and every translation unit, which includes this header will have its own copy of this constant. C++17 introduces inline variables, which are meant to allow creation of variables in header files, which do not cause multiple instances. The inline variable has a single instance when: - constexpr is used without static (constexpr implicitly implies inline) - inline is used without static - inline const is used without static (const does not imply internal linkage when used with inline) Signed-off-by: Patryk Wrobel <patryk.wrobel@intel.com>
38 lines
1.1 KiB
C++
38 lines
1.1 KiB
C++
/*
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* Copyright (C) 2020-2022 Intel Corporation
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*
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* SPDX-License-Identifier: MIT
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*
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*/
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#pragma once
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#include "shared/source/utilities/const_stringref.h"
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namespace NEO {
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namespace Ar {
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constexpr ConstStringRef arMagic = "!<arch>\n";
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constexpr ConstStringRef arFileEntryTrailingMagic = "\x60\x0A";
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struct ArFileEntryHeader {
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char identifier[16] = {'/', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '};
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char fileModificationTimestamp[12] = {'0', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '};
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char ownerId[6] = {'0', ' ', ' ', ' ', ' ', ' '};
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char groupId[6] = {'0', ' ', ' ', ' ', ' ', ' '};
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char fileMode[8] = {'6', '4', '4', ' ', ' ', ' ', ' ', ' '};
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char fileSizeInBytes[10] = {'0', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '};
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char trailingMagic[2] = {arFileEntryTrailingMagic[0], arFileEntryTrailingMagic[1]};
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};
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static_assert(60U == sizeof(ArFileEntryHeader), "");
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namespace SpecialFileNames {
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constexpr ConstStringRef longFileNamesFile = "//";
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constexpr char longFileNamePrefix = '/';
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constexpr char fileNameTerminator = '/';
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} // namespace SpecialFileNames
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} // namespace Ar
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} // namespace NEO
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