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Diffstat (limited to 'boost/container/pmr/pool_options.hpp')
-rw-r--r-- | boost/container/pmr/pool_options.hpp | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/boost/container/pmr/pool_options.hpp b/boost/container/pmr/pool_options.hpp new file mode 100644 index 0000000000..e9f72896b1 --- /dev/null +++ b/boost/container/pmr/pool_options.hpp @@ -0,0 +1,52 @@ +////////////////////////////////////////////////////////////////////////////// +// +// (C) Copyright Ion Gaztanaga 2015-2015. Distributed under the Boost +// Software License, Version 1.0. (See accompanying file +// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// +// See http://www.boost.org/libs/container for documentation. +// +////////////////////////////////////////////////////////////////////////////// + +#ifndef BOOST_CONTAINER_PMR_POOL_OPTIONS_HPP +#define BOOST_CONTAINER_PMR_POOL_OPTIONS_HPP + +#if defined (_MSC_VER) +# pragma once +#endif + +#include <cstddef> + +namespace boost { +namespace container { +namespace pmr { + +//! 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. +struct pool_options +{ + pool_options() + : max_blocks_per_chunk(0u), largest_required_pool_block(0u) + {} + std::size_t max_blocks_per_chunk; + std::size_t largest_required_pool_block; +}; + +} //namespace pmr { +} //namespace container { +} //namespace boost { + +#endif //BOOST_CONTAINER_PMR_POOL_OPTIONS_HPP |