Ada Programming/Libraries/Ada.Containers.Unbounded_Synchronized_Queues

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---

This language feature has been introduced in Ada 2012.

Ada.Containers.Unbounded_Synchronized_Queues is a unit of the Predefined Language Environment since Ada 2012.

Specification

--                     Standard Ada library specification
--   Copyright (c) 2004-2016 AXE Consultants
--   Copyright (c) 2004, 2005, 2006 Ada-Europe
--   Copyright (c) 2000 The MITRE Corporation, Inc.
--   Copyright (c) 1992, 1993, 1994, 1995 Intermetrics, Inc.
--   SPDX-License-Identifier: BSD-3-Clause and LicenseRef-AdaReferenceManual
-- -------------------------------------------------------------------------

with System;
with Ada.Containers.Synchronized_Queue_Interfaces;
generic
   with package Queue_Interfaces is new Ada.Containers.Synchronized_Queue_Interfaces (<>);
   Default_Ceiling : System.Any_Priority := System.Priority'Last;
package Ada.Containers.Unbounded_Synchronized_Queues is
   pragma Preelaborate(Unbounded_Synchronized_Queues);

   package Implementation is
       --  not specified by the language
   end Implementation;

   protected type Queue
        (Ceiling : System.Any_Priority := Default_Ceiling)
           with Priority => Ceiling is
        new Queue_Interfaces.Queue with

      overriding
      entry Enqueue (New_Item : in Queue_Interfaces.Element_Type);
      overriding
      entry Dequeue (Element : out Queue_Interfaces.Element_Type);

      overriding
      function Current_Use return Count_Type;
      overriding
      function Peak_Use return Count_Type;

   private
       --  not specified by the language
   end Queue;

private

    --  not specified by the language

end Ada.Containers.Unbounded_Synchronized_Queues;

See also

Wikibook

• Ada Programming/Libraries/Ada
• Ada Programming/Libraries/Ada.Containers

External examples

• Search for examples of Ada.Containers.Unbounded_Synchronized_Queues in: Rosetta Code, GitHub (gists), any Alire crate or this Wikibook.
• Search for posts related to Ada.Containers.Unbounded_Synchronized_Queues in: Stack Overflow, comp.lang.ada or any Ada related page.

Ada Reference Manual

Ada 2012

• A.18.28: The Generic Package Containers.Unbounded_Synchronized_Queues ^[Annotated]

Open-Source Implementations

FSF GNAT

• Specification: a-cusyqu.ads
• Body: a-cusyqu.adb

drake

• Specification: tasking/a-cusyqu.ads
• Body: tasking/a-cusyqu.adb