std::promise::set_exception_at_thread_exit
std::promise::set_exception_at_thread_exit
void set_exception_at_thread_exit( std::exception_ptr p ); | (since C++11) |
Stores the exception pointer p into the shared state without making the state ready immediately. The state is made ready when the current thread exits, after all variables with thread-local storage duration have been destroyed.
The operation behaves as though set_value, set_exception, set_value_at_thread_exit, and set_exception_at_thread_exit acquire a single mutex associated with the promise object while updating the promise object.
An exception is thrown if there is no shared state or the shared state already stores a value or exception.
Parameters
| p | - | exception pointer to store. The behavior is undefined if p is null. |
Return value
(none).
Exceptions
std::future_error on the following conditions:
-
*thishas no shared state. The error category is set tono_state. - The shared state already stores a value or exception. The error category is set to
promise_already_satisfied.
Example
See also
| sets the result to indicate an exception (public member function) |
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