1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT LIBRARY COMPONENTS                          --
4--                                                                          --
5--               ADA.CONTAINERS.SYNCHRONIZED_QUEUE_INTERFACES               --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--            Copyright (C) 2011, Free Software Foundation, Inc.            --
10--                                                                          --
11-- This specification is derived from the Ada Reference Manual for use with --
12-- GNAT. The copyright notice above, and the license provisions that follow --
13-- apply solely to the  contents of the part following the private keyword. --
14--                                                                          --
15-- GNAT is free software;  you can  redistribute it  and/or modify it under --
16-- terms of the  GNU General Public License as published  by the Free Soft- --
17-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
18-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
19-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
20-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
21--                                                                          --
22-- As a special exception under Section 7 of GPL version 3, you are granted --
23-- additional permissions described in the GCC Runtime Library Exception,   --
24-- version 3.1, as published by the Free Software Foundation.               --
25--                                                                          --
26-- You should have received a copy of the GNU General Public License and    --
27-- a copy of the GCC Runtime Library Exception along with this program;     --
28-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
29-- <http://www.gnu.org/licenses/>.                                          --
30--                                                                          --
31-- This unit was originally developed by Matthew J Heaney.                  --
32------------------------------------------------------------------------------
33
34generic
35   type Element_Type is private;
36
37package Ada.Containers.Synchronized_Queue_Interfaces is
38   pragma Pure;
39
40   type Queue is synchronized interface;
41
42   procedure Enqueue
43     (Container : in out Queue;
44      New_Item  : Element_Type) is abstract;
45
46   --  ???
47   --  This is the official Ada 2012 syntax:
48   --  with Synchronization => By_Entry;
49
50   --  This is the temporary work-around:
51   pragma Implemented (Enqueue, By_Entry);
52
53   procedure Dequeue
54     (Container : in out Queue;
55      Element   : out Element_Type) is abstract;
56
57   --  ???
58   --  This is the official Ada 2012 syntax:
59   --  with Synchronization => By_Entry;
60
61   --  This is the temporary work-around:
62   pragma Implemented (Dequeue, By_Entry);
63
64   function Current_Use (Container : Queue) return Count_Type is abstract;
65
66   function Peak_Use (Container : Queue) return Count_Type is abstract;
67
68end Ada.Containers.Synchronized_Queue_Interfaces;
69