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39 lines
929 B
C++
39 lines
929 B
C++
/*
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* Copyright (C) 2021-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
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*/
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#pragma once
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#include <cstring>
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#include <type_traits>
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#include <span>
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template <class T> concept Trivial = std::is_trivial_v<T>;
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template <class T> concept TriviallyCopyable = std::is_trivially_copyable_v<T>;
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template <TriviallyCopyable To>
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To read_unaligned(const void* src) {
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To dst;
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std::memcpy(&dst, src, sizeof(To));
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return dst;
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}
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template <TriviallyCopyable From>
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void write_unaligned(void* dst, const From& src) {
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std::memcpy(dst, &src, sizeof(From));
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}
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template <TriviallyCopyable From>
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std::byte* write_unaligned(std::byte* dst, const From& src) {
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std::memcpy(dst, &src, sizeof(From));
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return dst + sizeof(From);
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}
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std::span<const std::byte> object_representation(const TriviallyCopyable auto& x) {
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return {reinterpret_cast<const std::byte*>(&x), sizeof(x)};
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}
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