std::pmr::pool_options

< cpp‎ | memory
Defined in header <memory_resource>
struct pool_options;
 (since C++17)

std::pmr::pool_options is a set of constructor options for pool resources including std::pmr::synchronized_pool_resource and std::pmr::unsynchronized_pool_resource.

Data members

Member Meaning
std::size_t max_blocks_per_chunk;
The maximum number of blocks that will be allocated at once from the upstream std::pmr::memory_resource to replenish the pool. If the value of max_blocks_per_chunk is zero or is greater than an implementation-defined limit, that limit is used instead. The implementation may choose to use a smaller value than is specified in this field and may use different values for different pools.
std::size_t largest_required_pool_block;
The largest allocation size that is required to be fulfilled using the pooling mechanism. Attempts to allocate a single block larger than this threshold will be allocated directly from the upstream std::pmr::memory_resource. If largest_required_pool_block is zero or is greater than an implementation-defined limit, that limit is used instead. The implementation may choose a pass-through threshold larger than specified in this field.


See also

(C++17)
 a thread-safe std::pmr::memory_resource for managing allocations in pools of different block sizes
(class)
(C++17)
 a thread-unsafe std::pmr::memory_resource for managing allocations in pools of different block sizes
(class)