projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | // boost lockfree |
| 2 | // | |
| 3 | // Copyright (C) 2011, 2016 Tim Blechmann | |
| 4 | // | |
| 5 | // Distributed under the Boost Software License, Version 1.0. (See | |
| 6 | // accompanying file LICENSE_1_0.txt or copy at | |
| 7 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 8 | ||
| 9 | #ifndef BOOST_LOCKFREE_DETAIL_PARAMETER_HPP | |
| 10 | #define BOOST_LOCKFREE_DETAIL_PARAMETER_HPP | |
| 11 | ||
| 12 | #include <boost/lockfree/policies.hpp> | |
| 13 | #include <boost/parameter/parameters.hpp> | |
| 14 | #include <boost/parameter/binding.hpp> | |
| 15 | ||
| 16 | #include <boost/mpl/void.hpp> | |
| 17 | ||
| 18 | ||
| 19 | namespace boost { | |
| 20 | namespace lockfree { | |
| 21 | namespace detail { | |
| 22 | ||
| 23 | namespace mpl = boost::mpl; | |
| 24 | ||
| 25 | template <typename bound_args, typename tag_type> | |
| 26 | struct has_arg | |
| 27 | { | |
| 28 | typedef typename parameter::binding<bound_args, tag_type, mpl::void_>::type type; | |
| 29 | static const bool value = mpl::is_not_void_<type>::type::value; | |
| 30 | }; | |
| 31 | ||
| 32 | ||
| 33 | template <typename bound_args> | |
| 34 | struct extract_capacity | |
| 35 | { | |
| 36 | static const bool has_capacity = has_arg<bound_args, tag::capacity>::value; | |
| 37 | ||
| 38 | typedef typename mpl::if_c<has_capacity, | |
| 39 | typename has_arg<bound_args, tag::capacity>::type, | |
| 40 | mpl::size_t< 0 > | |
| 41 | >::type capacity_t; | |
| 42 | ||
| 43 | static const std::size_t capacity = capacity_t::value; | |
| 44 | }; | |
| 45 | ||
| 46 | ||
| 47 | template <typename bound_args, typename T> | |
| 48 | struct extract_allocator | |
| 49 | { | |
| 50 | static const bool has_allocator = has_arg<bound_args, tag::allocator>::value; | |
| 51 | ||
| 52 | typedef typename mpl::if_c<has_allocator, | |
| 53 | typename has_arg<bound_args, tag::allocator>::type, | |
| 54 | std::allocator<T> | |
| 55 | >::type allocator_arg; | |
| 56 | ||
| 57 | typedef typename allocator_arg::template rebind<T>::other type; | |
| 58 | }; | |
| 59 | ||
| 60 | template <typename bound_args, bool default_ = false> | |
| 61 | struct extract_fixed_sized | |
| 62 | { | |
| 63 | static const bool has_fixed_sized = has_arg<bound_args, tag::fixed_sized>::value; | |
| 64 | ||
| 65 | typedef typename mpl::if_c<has_fixed_sized, | |
| 66 | typename has_arg<bound_args, tag::fixed_sized>::type, | |
| 67 | mpl::bool_<default_> | |
| 68 | >::type type; | |
| 69 | ||
| 70 | static const bool value = type::value; | |
| 71 | }; | |
| 72 | ||
| 73 | ||
| 74 | } /* namespace detail */ | |
| 75 | } /* namespace lockfree */ | |
| 76 | } /* namespace boost */ | |
| 77 | ||
| 78 | #endif /* BOOST_LOCKFREE_DETAIL_PARAMETER_HPP */ |