cuda::experimental::legacy_pinned_memory_resource#

class legacy_pinned_memory_resource#

legacy_pinned_memory_resource uses cudaMallocHost / cudaFreeHost for allocation / deallocation.

Note

This memory resource will be deprecated in the future. For CUDA 12.6 and above, use cuda::experimental::pinned_memory_resource instead, which is the long-term replacement.

Public Types

using default_queries = properties_list<device_accessible, host_accessible>#

Public Functions

inline constexpr legacy_pinned_memory_resource() noexcept#
inline void *allocate_sync(
const size_t __bytes,
const size_t __alignment = cuda::mr::default_cuda_malloc_host_alignment,
) const#

Allocate host memory of size at least __bytes.

Parameters:

  • __bytes – The size in bytes of the allocation.

  • __alignment – The requested alignment of the allocation.

Throws:

std::invalid_argument – in case of invalid alignment or cuda::cuda_error of the returned error code.

Returns:

Pointer to the newly allocated memory

inline void deallocate_sync(
void *__ptr,
const size_t,
const size_t __alignment = cuda::mr::default_cuda_malloc_host_alignment,
) const noexcept#

Deallocate memory pointed to by __ptr.

Parameters:

  • __ptr – Pointer to be deallocated. Must have been allocated through a call to allocate_sync.

  • __bytes – The number of bytes that was passed to the allocation call that returned __ptr.

  • __alignment – The alignment that was passed to the allocation call that returned __ptr.

inline constexpr bool operator==(
legacy_pinned_memory_resource const&,
) const noexcept#

Equality comparison with another legacy_pinned_memory_resource.

Parameters:

__other – The other legacy_pinned_memory_resource.

Returns:

Whether both legacy_pinned_memory_resource were constructed with the same flags.