thrust::mr::pool_options#

struct pool_options#

A type used for configuring pooling resource adaptors, to fine-tune their behavior and parameters.

Public Functions

inline bool validate() const#

Checks if the options are self-consistent.

/returns true if the options are self-consistent, false otherwise.

Public Members

std::size_t min_blocks_per_chunk#

The minimal number of blocks, i.e. pieces of memory handed off to the user from a pool of a given size, in a single chunk allocated from upstream.

std::size_t min_bytes_per_chunk#

The minimal number of bytes in a single chunk allocated from upstream.

std::size_t max_blocks_per_chunk#

The maximal number of blocks, i.e. pieces of memory handed off to the user from a pool of a given size, in a single chunk allocated from upstream.

std::size_t max_bytes_per_chunk#

The maximal number of bytes in a single chunk allocated from upstream.

std::size_t smallest_block_size#

The size of blocks in the smallest pool covered by the pool resource. All allocation requests below this size will be rounded up to this size.

std::size_t largest_block_size#

The size of blocks in the largest pool covered by the pool resource. All allocation requests above this size will be considered oversized, allocated directly from upstream (and not from a pool), and cached only of cache_oversized is true.

std::size_t alignment#

The alignment of all blocks in internal pools of the pool resource. All allocation requests above this alignment will be considered oversized, allocated directly from upstream (and not from a pool), and cached only of cache_oversized is true.

bool cache_oversized#

Decides whether oversized and overaligned blocks are cached for later use, or immediately return it to the upstream resource.

std::size_t cached_size_cutoff_factor#

The size factor at which a cached allocation is considered too ridiculously oversized to use to fulfill an allocation request. For instance: the user requests an allocation of size 1024 bytes. A block of size 32 * 1024 bytes is cached. If cached_size_cutoff_factor is 32 or less, this block will be considered too big for that allocation request.

std::size_t cached_alignment_cutoff_factor#

The alignment factor at which a cached allocation is considered too ridiculously overaligned to use to fulfill an allocation request. For instance: the user requests an allocation aligned to 32 bytes. A block aligned to 1024 bytes is cached. If cached_size_cutoff_factor is 32 or less, this block will be considered too overaligned for that allocation request.