hpx/async_distributed/promise.hpp#
Defined in header hpx/async_distributed/promise.hpp.
See Public API for a list of names and headers that are part of the public HPX API.
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template<>
class promise<void, hpx::util::unused_type> : public lcos::detail::promise_base<void, hpx::util::unused_type, lcos::detail::promise_data<void>># Public Functions
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promise() = default#
constructs a promise object and a shared state.
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template<typename Allocator>
inline promise(std::allocator_arg_t, Allocator const &a)# constructs a promise object and a shared state. The constructor uses the allocator a to allocate the memory for the shared state.
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promise(promise &&other) noexcept = default#
constructs a new promise object and transfers ownership of the shared state of other (if any) to the newly- constructed object.
- Post
other has no shared state.
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~promise() = default#
Abandons any shared state.
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promise &operator=(promise &&other) noexcept = default#
Abandons any shared state (30.6.4) and then as if promise(HPX_MOVE(other)).swap(*this).
- Returns
*this.
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inline void swap(promise &other) noexcept#
Exchanges the shared state of *this and other.
- Post
*this has the shared state (if any) that other had prior to the call to swap. other has the shared state (if any) that *this had prior to the call to swap.
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inline void set_value()#
atomically stores the value r in the shared state and makes that state ready (30.6.4).
- Throws
future_error – if its shared state already has a stored value. if shared state has no stored value exception is raised. promise_already_satisfied if its shared state already has a stored value or exception. no_state if *this has no shared state.
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promise() = default#
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template<typename R, typename Allocator>
struct uses_allocator<hpx::distributed::promise<R>, Allocator> : public true_type# - #include <promise.hpp>
Requires: Allocator shall be an allocator (17.6.3.5)
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namespace hpx
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namespace distributed
Functions
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template<typename Result, typename RemoteResult>
void swap(promise<Result, RemoteResult> &x, promise<Result, RemoteResult> &y) noexcept#
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template<typename Result, typename RemoteResult>
class promise - #include <promise.hpp>
- template<> unused_type > : public lcos::detail::promise_base< void, hpx::util::unused_type, lcos::detail::promise_data< void > >
Public Functions
-
promise() = default#
constructs a promise object and a shared state.
-
template<typename Allocator>
inline promise(std::allocator_arg_t, Allocator const &a)# constructs a promise object and a shared state. The constructor uses the allocator a to allocate the memory for the shared state.
-
promise(promise &&other) noexcept = default#
constructs a new promise object and transfers ownership of the shared state of other (if any) to the newly- constructed object.
- Post
other has no shared state.
-
~promise() = default#
Abandons any shared state.
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promise &operator=(promise &&other) noexcept = default#
Abandons any shared state (30.6.4) and then as if promise(HPX_MOVE(other)).swap(*this).
- Returns
*this.
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inline void swap(promise &other) noexcept#
Exchanges the shared state of *this and other.
- Post
*this has the shared state (if any) that other had prior to the call to swap. other has the shared state (if any) that *this had prior to the call to swap.
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inline void set_value()#
atomically stores the value r in the shared state and makes that state ready (30.6.4).
- Throws
future_error – if its shared state already has a stored value. if shared state has no stored value exception is raised. promise_already_satisfied if its shared state already has a stored value or exception. no_state if *this has no shared state.
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promise() = default#
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template<typename Result, typename RemoteResult>
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namespace distributed
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namespace std
- template<typename R, typename Allocator> promise< R >, Allocator > : public true_type
- #include <promise.hpp>
Requires: Allocator shall be an allocator (17.6.3.5)