std::experimental::make_exceptional_future

std::experimental::make_exceptional_future - cppreference.com

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Defined in header `<experimental/future>`
`template< class T > future<T> make_exceptional_future( std::exception_ptr ex );`	(1)	(concurrency TS)
`template< class T, class E > future<T> make_exceptional_future( E ex );`	(2)	(concurrency TS)

1) Creates a shared state of type T that is immediately ready and stores the exception pointer ex, then return a future associated with that shared state, as if by promise<T> p; p.set_exception(ex); return p.get_future();. The behavior is undefined if ex is null.

2) Creates a shared state of type T that is immediately ready and stores an exception pointer created from ex, then return a future associated with that shared state, as if by promise<T> p; p.set_exception(std::make_exception_ptr(ex)); return p.get_future();.

Return value

A future object associated with the shared state that was created.

Return value

See also