@paramin NumberOfEvents The number of events in the Event array.
@paramin Event An array of EFI_EVENT.
@paramout Index The pointer to the index of the event which satisfied the wait condition.
@retval EFI_SUCCESS The event indicated by Index was signaled.
@retval EFI_INVALID_PARAMETER 1) NumberOfEvents is 0.
2) The event indicated by Index is of type
EVT_NOTIFY_SIGNAL.
@retval EFI_UNSUPPORTED The current TPL is not TPL_APPLICATION.
Stops execution until an event is signaled.
@paramin NumberOfEvents The number of events in the Event array. @paramin Event An array of EFI_EVENT. @paramout Index The pointer to the index of the event which satisfied the wait condition.
@retval EFI_SUCCESS The event indicated by Index was signaled. @retval EFI_INVALID_PARAMETER 1) NumberOfEvents is 0. 2) The event indicated by Index is of type EVT_NOTIFY_SIGNAL. @retval EFI_UNSUPPORTED The current TPL is not TPL_APPLICATION.