A.18.28 The Generic Package Containers.Unbounded_Synchronized_Queues
Static Semantics
The language-defined generic package Containers.Unbounded_Synchronized_Queues
provides type Queue, which implements the interface type Containers.Synchronized_Queue_Interfaces.Queue.
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
with Preelaborate,
Nonblocking, Global =>
in out synchronized is
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
with Nonblocking, Global =>
null, Use_Formal =>
null;
overriding
function Peak_Use
return Count_Type
with Nonblocking, Global =>
null, Use_Formal =>
null;
private
... -- not specified by the language
end Queue;
private
... -- not specified by the language
end Ada.Containers.Unbounded_Synchronized_Queues;
The type Queue is used to represent task-safe queues.
The capacity for instances of type Queue is unbounded.
Ada 2005 and 2012 Editions sponsored in part by Ada-Europe