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boost::container::pmr::pool_options
// In header: <boost/container/pmr/pool_options.hpp> struct pool_options { // construct/copy/destruct pool_options(); // public data members std::size_t max_blocks_per_chunk; std::size_t largest_required_pool_block; };
The members of pool_options comprise a set of constructor options for pool resources. The effect of each option on the pool resource behavior is described below:
std::size_t max_blocks_per_chunk: The maximum number of blocks that will be allocated at once from the upstream memory resource to replenish a 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 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.