rmm::mr::pinned_host_memory_resource Class Reference

Memory resource class for allocating pinned host memory. More...

#include <pinned_host_memory_resource.hpp>

Public Member Functions
	pinned_host_memory_resource (pinned_host_memory_resource const &)=default
	Default copy constructor.
	pinned_host_memory_resource (pinned_host_memory_resource &&)=default
	Default move constructor.
pinned_host_memory_resource &	operator= (pinned_host_memory_resource const &)=default
	Default copy assignment operator.
pinned_host_memory_resource &	operator= (pinned_host_memory_resource &&)=default
	Default move assignment operator.
void *	allocate (cuda::stream_ref stream, std::size_t bytes, std::size_t alignment=rmm::CUDA_ALLOCATION_ALIGNMENT)
	Allocates pinned host memory of size at least bytes bytes.
void	deallocate (cuda::stream_ref stream, void *ptr, std::size_t bytes, std::size_t alignment=rmm::CUDA_ALLOCATION_ALIGNMENT) noexcept
	Deallocate memory pointed to by ptr.
void *	allocate_sync (std::size_t bytes, std::size_t alignment=rmm::CUDA_ALLOCATION_ALIGNMENT)
	Allocates pinned host memory of size at least bytes bytes synchronously.
void	deallocate_sync (void *ptr, std::size_t bytes, std::size_t alignment=rmm::CUDA_ALLOCATION_ALIGNMENT) noexcept
	Deallocate memory pointed to by ptr synchronously.
bool	operator== (pinned_host_memory_resource const &) const noexcept
	Compare this resource to another.
bool	operator!= (pinned_host_memory_resource const &) const noexcept
	Compare this resource to another.

Friends
void	get_property (pinned_host_memory_resource const &, cuda::mr::device_accessible) noexcept
	Enables the cuda::mr::device_accessible property.
void	get_property (pinned_host_memory_resource const &, cuda::mr::host_accessible) noexcept
	Enables the cuda::mr::host_accessible property.

Detailed Description

Memory resource class for allocating pinned host memory.

This class uses CUDA's cudaHostAlloc to allocate pinned host memory. It satisfies the cuda::mr::resource and cuda::mr::synchronous_resource concepts, and the cuda::mr::host_accessible and cuda::mr::device_accessible properties.

Member Function Documentation

allocate()

void * rmm::mr::pinned_host_memory_resource::allocate ( cuda::stream_ref stream, std::size_t bytes, std::size_t alignment = rmm::CUDA_ALLOCATION_ALIGNMENT )

nodiscard

Allocates pinned host memory of size at least bytes bytes.

Exceptions

rmm::out_of_memory	if the requested allocation could not be fulfilled due to a CUDA out of memory error.
rmm::bad_alloc	if the requested allocation could not be fulfilled due to any other reason.

The stream argument is ignored.

Parameters

stream	CUDA stream on which to perform the allocation (ignored).
bytes	The size, in bytes, of the allocation.
alignment	The alignment of the allocation

Returns

Pointer to the newly allocated memory.

allocate_sync()

void * rmm::mr::pinned_host_memory_resource::allocate_sync ( std::size_t bytes, std::size_t alignment = rmm::CUDA_ALLOCATION_ALIGNMENT )

nodiscard

Allocates pinned host memory of size at least bytes bytes synchronously.

Parameters

bytes	The size, in bytes, of the allocation.
alignment	The alignment of the allocation

Returns

Pointer to the newly allocated memory.

deallocate()

void rmm::mr::pinned_host_memory_resource::deallocate ( cuda::stream_ref stream, void * ptr, std::size_t bytes, std::size_t alignment = rmm::CUDA_ALLOCATION_ALIGNMENT )

noexcept

Deallocate memory pointed to by ptr.

The stream argument is ignored.

Parameters

stream	This argument is ignored.
ptr	Pointer to be deallocated
bytes	The size in bytes of the allocation. This must be equal to the value of bytes that was passed to the allocate call that returned ptr.
alignment	The alignment that was passed to the allocate call that returned ptr

deallocate_sync()

void rmm::mr::pinned_host_memory_resource::deallocate_sync ( void * ptr, std::size_t bytes, std::size_t alignment = rmm::CUDA_ALLOCATION_ALIGNMENT )

noexcept

Deallocate memory pointed to by ptr synchronously.

Parameters

ptr	Pointer to be deallocated
bytes	The size in bytes of the allocation
alignment	The alignment that was passed to the allocate call that returned ptr

operator!=()

bool rmm::mr::pinned_host_memory_resource::operator!= ( pinned_host_memory_resource const & ) const

nodiscardnoexcept

Compare this resource to another.

All instances of pinned_host_memory_resource are equivalent.

Returns

true Always

operator=() [1/2]

pinned_host_memory_resource & rmm::mr::pinned_host_memory_resource::operator= ( pinned_host_memory_resource && )

default

Default move assignment operator.

Returns

pinned_host_memory_resource& Reference to the assigned object

operator=() [2/2]

pinned_host_memory_resource & rmm::mr::pinned_host_memory_resource::operator= ( pinned_host_memory_resource const & )

default

Default copy assignment operator.

Returns

pinned_host_memory_resource& Reference to the assigned object

operator==()

bool rmm::mr::pinned_host_memory_resource::operator== ( pinned_host_memory_resource const & ) const

nodiscardnoexcept

Compare this resource to another.

All instances of pinned_host_memory_resource are equivalent.

Returns

true Always

Friends And Related Symbol Documentation

get_property [1/2]

void get_property ( pinned_host_memory_resource const & , cuda::mr::device_accessible  )

friend

Enables the cuda::mr::device_accessible property.

This property declares that a pinned_host_memory_resource provides device accessible memory

get_property [2/2]

void get_property ( pinned_host_memory_resource const & , cuda::mr::host_accessible  )

friend

Enables the cuda::mr::host_accessible property.

This property declares that a pinned_host_memory_resource provides host accessible memory

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

• pinned_host_memory_resource.hpp