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#pragma once
/**
* This file contains some using-declarations that define various kinds of
* PODArray.
*/
#include <Core/Defines.h>
#include <base/types.h>
#include <Common/Allocator_fwd.h>
namespace DB
{
inline constexpr size_t integerRoundUp(size_t value, size_t dividend)
{
return ((value + dividend - 1) / dividend) * dividend;
}
template <typename T, size_t initial_bytes = 4096,
typename TAllocator = Allocator<false>, size_t pad_right_ = 0,
size_t pad_left_ = 0>
class PODArray;
/** For columns. Padding is enough to read and write xmm-register at the address of the last element. */
template <typename T, size_t initial_bytes = 4096, typename TAllocator = Allocator<false>>
using PaddedPODArray = PODArray<T, initial_bytes, TAllocator, PADDING_FOR_SIMD - 1, PADDING_FOR_SIMD>;
/** A helper for declaring PODArray that uses inline memory.
* The initial size is set to use all the inline bytes, since using less would
* only add some extra allocation calls.
*/
template <typename T, size_t inline_bytes,
size_t rounded_bytes = integerRoundUp(inline_bytes, sizeof(T))>
using PODArrayWithStackMemory = PODArray<T, rounded_bytes,
AllocatorWithStackMemory<Allocator<false>, rounded_bytes, alignof(T)>>;
}
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