std::packaged_task<R(Args...)>:: get_future

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std::packaged_task
std:: future < R > get_future ( ) ;
(since C++11)

Returns a future which shares the same shared state as * this .

get_future can be called only once for each packaged_task .

Parameters

(none)

Return value

A future which shares the same shared state as * this .

Exceptions

std::future_error on the following error conditions:

  • The shared state has already been retrieved via a call to get_future . The error category is set to future_already_retrieved .
  • * this has no shared state. The error category is set to no_state .
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