std::promise<R>::set_exception_at_thread_exit
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std::promise
Member functions
Getting the result
Setting the result
promise::set_exception_at_thread_exit
Non-member Functions
Helper Classes
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.
Calls to this function do not introduce data races with calls to get_future (therefore they need not synchronize with each other).
[edit] Parameters
p
-
exception pointer to store. The behavior is undefined if p is nullptr
[edit] Return value
(none)
[edit] Exceptions
std::future_error on the following conditions:
- *this has no shared state. The error code is set to no_state.
- The shared state already stores a value or exception. The error code is set to promise_already_satisfied.
[edit] Example
This section is incomplete
Reason: no example
Reason: no example