projects / ceph.git / blame
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|---|---|---|
| b32b8144 FG |
1 | |
| 2 | // Copyright Oliver Kowalke 2013. | |
| 3 | // Distributed under the Boost Software License, Version 1.0. | |
| 4 | // (See accompanying file LICENSE_1_0.txt or copy at | |
| 5 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 6 | ||
| 7 | #ifndef BOOST_FIBERS_ASYNC_HPP | |
| 8 | #define BOOST_FIBERS_ASYNC_HPP | |
| 9 | ||
| 10 | #include <algorithm> | |
| 11 | #include <memory> | |
| 12 | #include <type_traits> | |
| 13 | #include <utility> | |
| 14 | ||
| 15 | #include <boost/config.hpp> | |
| 16 | ||
| 17 | #include <boost/fiber/future/future.hpp> | |
| 18 | #include <boost/fiber/future/packaged_task.hpp> | |
| 19 | #include <boost/fiber/policy.hpp> | |
| 20 | ||
| 21 | namespace boost { | |
| 22 | namespace fibers { | |
| 23 | ||
| 24 | template< typename Fn, typename ... Args > | |
| 25 | future< | |
| 26 | typename std::result_of< | |
| 27 | typename std::enable_if< | |
| 28 | ! detail::is_launch_policy< typename std::decay< Fn >::type >::value, | |
| 29 | typename std::decay< Fn >::type | |
| 30 | >::type( typename std::decay< Args >::type ... ) | |
| 31 | >::type | |
| 32 | > | |
| 33 | async( Fn && fn, Args ... args) { | |
| 34 | typedef typename std::result_of< | |
| 35 | typename std::decay< Fn >::type( typename std::decay< Args >::type ... ) | |
| 36 | >::type result_type; | |
| 37 | ||
| 38 | packaged_task< result_type( typename std::decay< Args >::type ... ) > pt{ | |
| 39 | std::forward< Fn >( fn) }; | |
| 40 | future< result_type > f{ pt.get_future() }; | |
| 41 | fiber{ std::move( pt), std::forward< Args >( args) ... }.detach(); | |
| 42 | return f; | |
| 43 | } | |
| 44 | ||
| 45 | template< typename Policy, typename Fn, typename ... Args > | |
| 46 | future< | |
| 47 | typename std::result_of< | |
| 48 | typename std::enable_if< | |
| 49 | detail::is_launch_policy< Policy >::value, | |
| 50 | typename std::decay< Fn >::type | |
| 51 | >::type( typename std::decay< Args >::type ...) | |
| 52 | >::type | |
| 53 | > | |
| 54 | async( Policy policy, Fn && fn, Args ... args) { | |
| 55 | typedef typename std::result_of< | |
| 56 | typename std::decay< Fn >::type( typename std::decay< Args >::type ... ) | |
| 57 | >::type result_type; | |
| 58 | ||
| 59 | packaged_task< result_type( typename std::decay< Args >::type ... ) > pt{ | |
| 60 | std::forward< Fn >( fn) }; | |
| 61 | future< result_type > f{ pt.get_future() }; | |
| 62 | fiber{ policy, std::move( pt), std::forward< Args >( args) ... }.detach(); | |
| 63 | return f; | |
| 64 | } | |
| 65 | ||
| 66 | template< typename Policy, typename StackAllocator, typename Fn, typename ... Args > | |
| 67 | future< | |
| 68 | typename std::result_of< | |
| 69 | typename std::enable_if< | |
| 70 | detail::is_launch_policy< Policy >::value, | |
| 71 | typename std::decay< Fn >::type | |
| 72 | >::type( typename std::decay< Args >::type ... ) | |
| 73 | >::type | |
| 74 | > | |
| 75 | async( Policy policy, std::allocator_arg_t, StackAllocator salloc, Fn && fn, Args ... args) { | |
| 76 | typedef typename std::result_of< | |
| 77 | typename std::decay< Fn >::type( typename std::decay< Args >::type ... ) | |
| 78 | >::type result_type; | |
| 79 | ||
| 80 | packaged_task< result_type( typename std::decay< Args >::type ... ) > pt{ | |
| 81 | std::forward< Fn >( fn) }; | |
| 82 | future< result_type > f{ pt.get_future() }; | |
| 83 | fiber{ policy, std::allocator_arg, salloc, | |
| 84 | std::move( pt), std::forward< Args >( args) ... }.detach(); | |
| 85 | return f; | |
| 86 | } | |
| 87 | ||
| 88 | template< typename Policy, typename StackAllocator, typename Allocator, typename Fn, typename ... Args > | |
| 89 | future< | |
| 90 | typename std::result_of< | |
| 91 | typename std::enable_if< | |
| 92 | detail::is_launch_policy< Policy >::value, | |
| 93 | typename std::decay< Fn >::type | |
| 94 | >::type( typename std::decay< Args >::type ... ) | |
| 95 | >::type | |
| 96 | > | |
| 97 | async( Policy policy, std::allocator_arg_t, StackAllocator salloc, Allocator alloc, Fn && fn, Args ... args) { | |
| 98 | typedef typename std::result_of< | |
| 99 | typename std::decay< Fn >::type( typename std::decay< Args >::type ... ) | |
| 100 | >::type result_type; | |
| 101 | ||
| 102 | packaged_task< result_type( typename std::decay< Args >::type ... ) > pt{ | |
| 103 | std::allocator_arg, alloc, std::forward< Fn >( fn) }; | |
| 104 | future< result_type > f{ pt.get_future() }; | |
| 105 | fiber{ policy, std::allocator_arg, salloc, | |
| 106 | std::move( pt), std::forward< Args >( args) ... }.detach(); | |
| 107 | return f; | |
| 108 | } | |
| 109 | ||
| 110 | }} | |
| 111 | ||
| 112 | #endif // BOOST_FIBERS_ASYNC_HPP |