nda::mem::multi_bucket< ChunkSize >

#include <nda/mem/allocators.hpp>

Detailed Description

template<int ChunkSize>
class nda::mem::multi_bucket< ChunkSize >

Custom allocator that uses multiple nda::mem::bucket allocators.

It uses a std::vector of bucket allocators. When all buckets in the vector are full, it simply adds a new one at the end.

Note

Only works with Host nda::mem::AddressSpace.

Template Parameters

ChunkSize

Size of the chunks in bytes.

Definition at line 264 of file allocators.hpp.

Public Member Functions
	multi_bucket ()
	Default constructor.
	multi_bucket (multi_bucket &&)=default
	Default move constructor.
	multi_bucket (multi_bucket const &)=delete
	Deleted copy constructor.
blk_t	allocate (size_t s) noexcept
	Allocate a chunk of memory in the current bucket or find a new one if the current one is full.
blk_t	allocate_zero (size_t s) noexcept
	Allocate a chunk of memory in the current bucket or find a new one if the current one is full and set it to zero.
auto const &	buckets () const noexcept
	Get the bucket vector.
void	deallocate (blk_t b) noexcept
	Deallocate a chunk of memory from the bucket to which it belongs.
bool	empty () const noexcept
	Check if the current allocator is empty.
multi_bucket &	operator= (multi_bucket &&)=default
	Default move assignment operator.
multi_bucket &	operator= (multi_bucket const &)=delete
	Deleted copy assignment operator.
bool	owns (blk_t b) const noexcept
	Check if a given nda::mem::blk_t memory block is owned by allocator.

Static Public Attributes
static constexpr auto	address_space = Host
	Only Host nda::mem::AddressSpace is supported for this allocator.

Member Function Documentation

allocate()

template<int ChunkSize>

blk_t nda::mem::multi_bucket< ChunkSize >::allocate ( size_t s )

inlinenoexcept

Allocate a chunk of memory in the current bucket or find a new one if the current one is full.

Parameters

s	Size in bytes of the returned memory block (has to be < ChunkSize).

Returns

nda::mem::blk_t memory block.

Definition at line 308 of file allocators.hpp.

allocate_zero()

template<int ChunkSize>

blk_t nda::mem::multi_bucket< ChunkSize >::allocate_zero ( size_t s )

inlinenoexcept

Allocate a chunk of memory in the current bucket or find a new one if the current one is full and set it to zero.

Parameters

s	Size in bytes of the returned memory block (has to be < ChunkSize).

Returns

nda::mem::blk_t memory block.

Definition at line 320 of file allocators.hpp.

buckets()

template<int ChunkSize>

auto const & nda::mem::multi_bucket< ChunkSize >::buckets ( ) const

inlinenodiscardnoexcept

Get the bucket vector.

Returns

std::vector with all the bucket allocators currently in use.

Definition at line 365 of file allocators.hpp.

deallocate()

template<int ChunkSize>

void nda::mem::multi_bucket< ChunkSize >::deallocate ( blk_t b )

inlinenoexcept

Deallocate a chunk of memory from the bucket to which it belongs.

If the bucket is empty after deallocation and it is not the only one, it is removed from the vector of buckets.

Parameters

b	nda::mem::blk_t memory block to deallocate.

Definition at line 334 of file allocators.hpp.

empty()

template<int ChunkSize>

bool nda::mem::multi_bucket< ChunkSize >::empty ( ) const

inlinenodiscardnoexcept

Check if the current allocator is empty.

Returns

True if there is only one bucket in the vector and it is empty.

Definition at line 359 of file allocators.hpp.

owns()

template<int ChunkSize>

bool nda::mem::multi_bucket< ChunkSize >::owns ( blk_t b ) const

inlinenodiscardnoexcept

Check if a given nda::mem::blk_t memory block is owned by allocator.

Parameters

b	nda::mem::blk_t memory block.

Returns

True if the memory block is owned by one of the buckets.

Definition at line 373 of file allocators.hpp.

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The documentation for this class was generated from the following file:

• nda/mem/allocators.hpp