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

      From cppreference.com
      <cpp‎ |thread‎ |packaged task
       
       
      Concurrency support library
      Threads
      (C++11)
      (C++20)
      this_thread namespace
      (C++11)
      (C++11)
      (C++11)
      Cooperative cancellation
      Mutual exclusion
      Generic lock management
      (C++11)
      (C++11)
      (C++11)
      (C++11)
      Condition variables
      (C++11)
      Semaphores
      Latches and Barriers
      (C++20)
      (C++20)
      Futures
      (C++11)
      (C++11)
      (C++11)
      Safe reclamation
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      Atomic types
      (C++11)
      (C++20)
      Initialization of atomic types
      (C++11)(deprecated in C++20)
      (C++11)(deprecated in C++20)
      Memory ordering
      (C++11)(deprecated in C++26)
      Free functions for atomic operations
      Free functions for atomic flags
       
       
      std::future<R> get_future();
      		(since C++11)

      Returns afuture which shares the same shared state as*this.

      get_future can be called only once for eachpackaged_task.

      [edit]Parameters

      (none)

      [edit]Return value

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

      [edit]Exceptions

      std::future_error on the following error conditions:

      • The shared state has already been retrieved via a call toget_future. The error category is set tofuture_already_retrieved.
      • *this has no shared state. The error category is set tono_state.
      Retrieved from "https://en.cppreference.com/mwiki/index.php?title=cpp/thread/packaged_task/get_future&oldid=132866"
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