53 lines
2.1 KiB
C++
53 lines
2.1 KiB
C++
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//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2015-2015. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/container for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_CONTAINER_PMR_POOL_OPTIONS_HPP
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#define BOOST_CONTAINER_PMR_POOL_OPTIONS_HPP
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#if defined (_MSC_VER)
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# pragma once
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#endif
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#include <cstddef>
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namespace boost {
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namespace container {
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namespace pmr {
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//! The members of pool_options comprise a set of constructor options for pool resources.
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//! The effect of each option on the pool resource behavior is described below:
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//!
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//! - `std::size_t max_blocks_per_chunk`: The maximum number of blocks that will be allocated
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//! at once from the upstream memory resource to replenish a pool. If the value of
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//! `max_blocks_per_chunk` is zero or is greater than an implementation-defined limit,
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//! that limit is used instead. The implementation may choose to use a smaller value
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//! than is specified in this field and may use different values for different pools.
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//!
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//! - `std::size_t largest_required_pool_block`: The largest allocation size that is required
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//! to be fulfilled using the pooling mechanism. Attempts to allocate a single block
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//! larger than this threshold will be allocated directly from the upstream memory
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//! resource. If largest_required_pool_block is zero or is greater than an
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//! implementation-defined limit, that limit is used instead. The implementation may
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//! choose a pass-through threshold larger than specified in this field.
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struct pool_options
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{
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pool_options()
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: max_blocks_per_chunk(0u), largest_required_pool_block(0u)
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{}
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std::size_t max_blocks_per_chunk;
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std::size_t largest_required_pool_block;
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};
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} //namespace pmr {
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} //namespace container {
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} //namespace boost {
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#endif //BOOST_CONTAINER_PMR_POOL_OPTIONS_HPP
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