| 36 | */ |
| 37 | template <typename Blocking, typename Relationship, typename Allocator> |
| 38 | class basic_system_executor |
| 39 | { |
| 40 | public: |
| 41 | /// Default constructor. |
| 42 | basic_system_executor() ASIO_NOEXCEPT |
| 43 | : allocator_(Allocator()) |
| 44 | { |
| 45 | } |
| 46 | |
| 47 | #if !defined(GENERATING_DOCUMENTATION) |
| 48 | private: |
| 49 | friend struct asio_require_fn::impl; |
| 50 | friend struct asio_prefer_fn::impl; |
| 51 | #endif // !defined(GENERATING_DOCUMENTATION) |
| 52 | |
| 53 | /// Obtain an executor with the @c blocking.possibly property. |
| 54 | /** |
| 55 | * Do not call this function directly. It is intended for use with the |
| 56 | * asio::require customisation point. |
| 57 | * |
| 58 | * For example: |
| 59 | * @code asio::system_executor ex1; |
| 60 | * auto ex2 = asio::require(ex1, |
| 61 | * asio::execution::blocking.possibly); @endcode |
| 62 | */ |
| 63 | basic_system_executor<execution::blocking_t::possibly_t, |
| 64 | Relationship, Allocator> |
| 65 | require(execution::blocking_t::possibly_t) const |
| 66 | { |
| 67 | return basic_system_executor<execution::blocking_t::possibly_t, |
| 68 | Relationship, Allocator>(allocator_); |
| 69 | } |
| 70 | |
| 71 | /// Obtain an executor with the @c blocking.always property. |
| 72 | /** |
| 73 | * Do not call this function directly. It is intended for use with the |
| 74 | * asio::require customisation point. |
| 75 | * |
| 76 | * For example: |
| 77 | * @code asio::system_executor ex1; |
| 78 | * auto ex2 = asio::require(ex1, |
| 79 | * asio::execution::blocking.always); @endcode |
| 80 | */ |
| 81 | basic_system_executor<execution::blocking_t::always_t, |
| 82 | Relationship, Allocator> |
| 83 | require(execution::blocking_t::always_t) const |
| 84 | { |
| 85 | return basic_system_executor<execution::blocking_t::always_t, |
| 86 | Relationship, Allocator>(allocator_); |
| 87 | } |
| 88 | |
| 89 | /// Obtain an executor with the @c blocking.never property. |
| 90 | /** |
| 91 | * Do not call this function directly. It is intended for use with the |
| 92 | * asio::require customisation point. |
| 93 | * |
| 94 | * For example: |
| 95 | * @code asio::system_executor ex1; |