gcc/testsuite/gnat.dg/timer_cancel.adb

   1 -- { dg-do run }
   2
   3 with Ada.Real_Time.Timing_Events;
   4 use Ada.Real_Time, Ada.Real_Time.Timing_Events;
   5
   6 procedure Timer_Cancel is
   7
   8    E : Timing_Event;
   9    C : Boolean;
  10
  11    protected Dummy is
  12       procedure Trigger (Event : in out Timing_Event);
  13    end Dummy;
  14
  15    protected body Dummy is
  16       procedure Trigger (Event : in out Timing_Event) is
  17       begin
  18          null;
  19       end Trigger;
  20    end Dummy;
  21
  22 begin
  23    Set_Handler (E, Time_Last, Dummy.Trigger'Unrestricted_Access);
  24
  25    if Time_Of_Event (E) /= Time_Last then
  26       raise Program_Error with "Event time not set correctly";
  27    end if;
  28
  29    Cancel_Handler (E, C);
  30
  31    if not C then
  32       raise Program_Error with "Event triggered already";
  33    end if;
  34
  35    if Time_Of_Event (E) /= Time_First then
  36       raise Program_Error with "Event time not reset correctly";
  37    end if;
  38 end Timer_Cancel;