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

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std::packaged_task
 
std::future<R> get_future();
 (since 哋它亢++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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