blob: d31c8824458624fecf8b9f7b1c19340abfd18425 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
------------------------------------------------------------------------------
-- --
-- GNAT LIBRARY COMPONENTS --
-- --
-- ADA.CONTAINERS.UNBOUNDED_PRIORITY_QUEUES --
-- --
-- S p e c --
-- --
-- Copyright (C) 2011, Free Software Foundation, Inc. --
-- --
-- This specification is derived from the Ada Reference Manual for use with --
-- GNAT. The copyright notice above, and the license provisions that follow --
-- apply solely to the contents of the part following the private keyword. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are granted --
-- additional permissions described in the GCC Runtime Library Exception, --
-- version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- This unit was originally developed by Matthew J Heaney. --
------------------------------------------------------------------------------
with System;
with Ada.Containers.Synchronized_Queue_Interfaces;
with Ada.Finalization;
generic
with package Queue_Interfaces is
new Ada.Containers.Synchronized_Queue_Interfaces (<>);
type Queue_Priority is private;
with function Get_Priority
(Element : Queue_Interfaces.Element_Type) return Queue_Priority is <>;
with function Before
(Left, Right : Queue_Priority) return Boolean is <>;
Default_Ceiling : System.Any_Priority := System.Priority'Last;
package Ada.Containers.Unbounded_Priority_Queues is
pragma Preelaborate;
-- All identifiers in this unit are implementation defined
pragma Implementation_Defined;
package Implementation is
type List_Type is tagged limited private;
procedure Enqueue
(List : in out List_Type;
New_Item : Queue_Interfaces.Element_Type);
procedure Dequeue
(List : in out List_Type;
Element : out Queue_Interfaces.Element_Type);
function Length (List : List_Type) return Count_Type;
function Max_Length (List : List_Type) return Count_Type;
private
type Node_Type;
type Node_Access is access Node_Type;
type Node_Type is limited record
Element : Queue_Interfaces.Element_Type;
Next : Node_Access;
end record;
type List_Type is new Ada.Finalization.Limited_Controlled with record
First, Last : Node_Access;
Length : Count_Type := 0;
Max_Length : Count_Type := 0;
end record;
overriding
procedure Finalize (List : in out List_Type);
-- ???
-- not overriding
-- function Have_High_Priority
-- (List : List_Type;
-- Low_Priority : Queue_Priority) return Boolean;
end Implementation;
protected type Queue (Ceiling : System.Any_Priority := Default_Ceiling)
-- ???
-- with Priority => Ceiling is new Queue_Interfaces.Queue with
is new Queue_Interfaces.Queue with
overriding
entry Enqueue (New_Item : Queue_Interfaces.Element_Type);
overriding
entry Dequeue (Element : out Queue_Interfaces.Element_Type);
-- ???
-- not overriding
-- entry Dequeue_Only_High_Priority
-- (Low_Priority : Queue_Priority;
-- Element : out Queue_Interfaces.Element_Type);
overriding
function Current_Use return Count_Type;
overriding
function Peak_Use return Count_Type;
private
List : Implementation.List_Type;
end Queue;
end Ada.Containers.Unbounded_Priority_Queues;
|
