nda::mem::segregator< Threshold, A, B >

#include <nda/mem/allocators.hpp>

Detailed Description

template<size_t Threshold, Allocator A, Allocator B>
class nda::mem::segregator< Threshold, A, B >

Custom allocator that dispatches memory allocation to one of two allocators based on the size of the memory block to be allocated.

Note

Only works if both allocators have the same nda::mem::AddressSpace.

Template Parameters

Threshold	Size in bytes that determines which allocator to use.
A	nda::mem::Allocator for small memory blocks.
B	nda::mem::Allocator for big memory blocks.

Definition at line 391 of file allocators.hpp.

Public Member Functions
	segregator ()=default
	Default constructor.
	segregator (segregator &&)=default
	Default move constructor.
	segregator (segregator const &)=delete
	Deleted copy constructor.
blk_t	allocate (size_t s) noexcept
	Allocate memory using the small allocator if the size is less than or equal to the Threshold, otherwise use the big allocator.
blk_t	allocate_zero (size_t s) noexcept
	Allocate memory and set the memory to zero using the small allocator if the size is less than or equal to the Threshold, otherwise use the big allocator.
void	deallocate (blk_t b) noexcept
	Deallocate memory using the small allocator if the size is less than or equal to the Threshold, otherwise use the big allocator.
segregator &	operator= (segregator &&)=default
	Default move assignment operator.
segregator &	operator= (segregator 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 the allocator.

Static Public Attributes
static constexpr auto	address_space = A::address_space
	nda::mem::AddressSpace in which the memory is allocated.

Member Function Documentation

allocate()

template<size_t Threshold, Allocator A, Allocator B>

blk_t nda::mem::segregator< Threshold, A, B >::allocate ( size_t s )

inlinenoexcept

Allocate memory using the small allocator if the size is less than or equal to the Threshold, otherwise use the big allocator.

Parameters

s	Size in bytes of the memory to allocate.

Returns

nda::mem::blk_t memory block.

Definition at line 426 of file allocators.hpp.

allocate_zero()

template<size_t Threshold, Allocator A, Allocator B>

blk_t nda::mem::segregator< Threshold, A, B >::allocate_zero ( size_t s )

inlinenoexcept

Allocate memory and set the memory to zero using the small allocator if the size is less than or equal to the Threshold, otherwise use the big allocator.

Parameters

s	Size in bytes of the memory to allocate.

Returns

nda::mem::blk_t memory block.

Definition at line 435 of file allocators.hpp.

deallocate()

template<size_t Threshold, Allocator A, Allocator B>

void nda::mem::segregator< Threshold, A, B >::deallocate ( blk_t b )

inlinenoexcept

Deallocate memory using the small allocator if the size is less than or equal to the Threshold, otherwise use the big allocator.

Parameters

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

Definition at line 443 of file allocators.hpp.

owns()

template<size_t Threshold, Allocator A, Allocator B>

bool nda::mem::segregator< Threshold, A, B >::owns ( blk_t b ) const

inlinenodiscardnoexcept

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

Parameters

b	nda::mem::blk_t memory block.

Returns

True if one of the two allocators owns the memory block.

Definition at line 451 of file allocators.hpp.

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

• nda/mem/allocators.hpp