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std::promise::get_future(3) C++ Standard Libary std::promise::get_future(3) NAME std::promise::get_future - std::promise::get_future Synopsis std::future<R> get_future(); (since C++11) Returns a future object associated with the same shared state as *this. An exception is thrown if *this has no shared state or get_future has already been called. To get multiple "pop" ends of the promise-future communica- tion channel, use std::future::share. Calls to this function do not introduce data races with calls to set_value, set_exception, set_value_at_thread_exit, or set_excep- tion_at_thread_exit (but they need not synchronize with each other). Parameters (none) Return value A future referring to the shared state of *this Exceptions std::future_error on the following conditions: * *this has no shared state. The error category is set to no_state. * get_future() has already been called on a promise with the same shared state as *this. The error category is set to future_already_retrieved. http://cppreference.com 2022.07.31 std::promise::get_future(3)
NAME | Synopsis | Parameters | Return value | Exceptions
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