Data update

Task/Queue-Definition/Ada/queue-definition-1.adb

@@ -0,0 +1,20 @@
+generic
+   type Element_Type is private;
+package Fifo is
+   type Fifo_Type is private;
+   procedure Push(List : in out Fifo_Type; Item : in Element_Type);
+   procedure Pop(List : in out Fifo_Type; Item : out Element_Type);
+   function Is_Empty(List : Fifo_Type) return Boolean;
+   Empty_Error : exception;
+private
+   type Fifo_Element;
+   type Fifo_Ptr is access Fifo_Element;
+   type Fifo_Type is record
+      Head : Fifo_Ptr := null;
+      Tail : Fifo_Ptr := null;
+   end record;
+   type Fifo_Element is record
+      Value : Element_Type;
+      Next  : Fifo_Ptr := null;
+   end record;
+end Fifo;