ceph/src/boost/libs/coroutine2/include/boost/coroutine2/detail/pull_control_block_ecv1.hpp

   1
   2 //          Copyright Oliver Kowalke 2014.
   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_COROUTINES2_DETAIL_PULL_CONTROL_BLOCK_HPP
   8 #define BOOST_COROUTINES2_DETAIL_PULL_CONTROL_BLOCK_HPP
   9
  10 #include <exception>
  11 #include <functional>
  12 #include <type_traits>
  13
  14 #include <boost/config.hpp>
  15 #include <boost/context/execution_context.hpp>
  16
  17 #include <boost/coroutine2/detail/state.hpp>
  18
  19 #ifdef BOOST_HAS_ABI_HEADERS
  20 #  include BOOST_ABI_PREFIX
  21 #endif
  22
  23 namespace boost {
  24 namespace coroutines2 {
  25 namespace detail {
  26
  27 template< typename T >
  28 struct pull_coroutine< T >::control_block {
  29     boost::context::execution_context                               ctx;
  30     typename push_coroutine< T >::control_block                 *   other;
  31     state_t                                                         state;
  32     std::exception_ptr                                              except;
  33     bool                                                            bvalid;
  34     typename std::aligned_storage< sizeof( T), alignof( T) >::type  storage;
  35
  36     static void destroy( control_block * cb) noexcept;
  37
  38     template< typename StackAllocator, typename Fn >
  39     control_block( context::preallocated, StackAllocator, Fn &&);
  40
  41     control_block( typename push_coroutine< T >::control_block *, boost::context::execution_context const&) noexcept;
  42
  43     ~control_block() noexcept;
  44
  45     control_block( control_block &) = delete;
  46     control_block & operator=( control_block &) = delete;
  47
  48     void deallocate() noexcept;
  49
  50     void resume();
  51
  52     void set( T *);
  53
  54     T & get() noexcept;
  55
  56     bool valid() const noexcept;
  57 };
  58
  59 template< typename T >
  60 struct pull_coroutine< T & >::control_block {
  61     boost::context::execution_context                   ctx;
  62     typename push_coroutine< T & >::control_block   *   other;
  63     state_t                                             state;
  64     std::exception_ptr                                  except;
  65     T                                               *   t;
  66
  67     static void destroy( control_block * cb) noexcept;
  68
  69     template< typename StackAllocator, typename Fn >
  70     control_block( context::preallocated, StackAllocator, Fn &&);
  71
  72     control_block( typename push_coroutine< T & >::control_block *, boost::context::execution_context const&) noexcept;
  73
  74     ~control_block() noexcept;
  75
  76     control_block( control_block &) = delete;
  77     control_block & operator=( control_block &) = delete;
  78
  79     void deallocate() noexcept;
  80
  81     void resume();
  82
  83     T & get() noexcept;
  84
  85     bool valid() const noexcept;
  86 };
  87
  88 struct pull_coroutine< void >::control_block {
  89     boost::context::execution_context           ctx;
  90     push_coroutine< void >::control_block  *    other;
  91     state_t                                     state;
  92     std::exception_ptr                          except;
  93
  94     static void destroy( control_block * cb) noexcept;
  95
  96     template< typename StackAllocator, typename Fn >
  97     control_block( context::preallocated, StackAllocator, Fn &&);
  98
  99     control_block( push_coroutine< void >::control_block *, boost::context::execution_context const&) noexcept;
 100
 101     ~control_block() noexcept;
 102
 103     control_block( control_block &) = delete;
 104     control_block & operator=( control_block &) = delete;
 105
 106     void deallocate() noexcept;
 107
 108     void resume();
 109
 110     bool valid() const noexcept;
 111 };
 112
 113 }}}
 114
 115 #ifdef BOOST_HAS_ABI_HEADERS
 116 #  include BOOST_ABI_SUFFIX
 117 #endif
 118
 119 #endif // BOOST_COROUTINES2_DETAIL_PULL_CONTROL_BLOCK_HPP