Ada Programming/Libraries/Ada.Real Time.Timing Events

is a unit of the Predefined Language Environment since Ada 2005.

Specification
Timing_Event Timing_Event_Handler Event   Timing_Event Set_Handler Event     Timing_Event At_Time      Time Handler      Timing_Event_Handler Set_Handler Event     Timing_Event In_Time      Time_Span Handler      Timing_Event_Handler Current_Handler Event  Timing_Event Timing_Event_Handler Cancel_Handler Event       Timing_Event Cancelled     Boolean Time_Of_Event Event  Timing_Event  Time Import Ada Timing_Event AdaReal_TimeTiming_Events

Wikibook

 * Ada Programming/Libraries/Ada