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1 | ////////////////////////////////////////////////////////////////////////////// |
2 | // | |
3 | // (C) Copyright Ion Gaztanaga 2015-2015. Distributed under the Boost | |
4 | // Software License, Version 1.0. (See accompanying file | |
5 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
6 | // | |
7 | // See http://www.boost.org/libs/container for documentation. | |
8 | // | |
9 | ////////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | #ifndef BOOST_CONTAINER_PMR_POOL_OPTIONS_HPP | |
12 | #define BOOST_CONTAINER_PMR_POOL_OPTIONS_HPP | |
13 | ||
14 | #if defined (_MSC_VER) | |
15 | # pragma once | |
16 | #endif | |
17 | ||
18 | #include <cstddef> | |
19 | ||
20 | namespace boost { | |
21 | namespace container { | |
22 | namespace pmr { | |
23 | ||
24 | //! The members of pool_options comprise a set of constructor options for pool resources. | |
25 | //! The effect of each option on the pool resource behavior is described below: | |
26 | //! | |
27 | //! - `std::size_t max_blocks_per_chunk`: The maximum number of blocks that will be allocated | |
28 | //! at once from the upstream memory resource to replenish a pool. If the value of | |
29 | //! `max_blocks_per_chunk` is zero or is greater than an implementation-defined limit, | |
30 | //! that limit is used instead. The implementation may choose to use a smaller value | |
31 | //! than is specified in this field and may use different values for different pools. | |
32 | //! | |
33 | //! - `std::size_t largest_required_pool_block`: The largest allocation size that is required | |
34 | //! to be fulfilled using the pooling mechanism. Attempts to allocate a single block | |
35 | //! larger than this threshold will be allocated directly from the upstream memory | |
36 | //! resource. If largest_required_pool_block is zero or is greater than an | |
37 | //! implementation-defined limit, that limit is used instead. The implementation may | |
38 | //! choose a pass-through threshold larger than specified in this field. | |
39 | struct pool_options | |
40 | { | |
41 | pool_options() | |
42 | : max_blocks_per_chunk(0u), largest_required_pool_block(0u) | |
43 | {} | |
44 | std::size_t max_blocks_per_chunk; | |
45 | std::size_t largest_required_pool_block; | |
46 | }; | |
47 | ||
48 | } //namespace pmr { | |
49 | } //namespace container { | |
50 | } //namespace boost { | |
51 | ||
52 | #endif //BOOST_CONTAINER_PMR_POOL_OPTIONS_HPP |