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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT LIBRARY COMPONENTS                          --
--                                                                          --
--               ADA.CONTAINERS.UNBOUNDED_SYNCHRONIZED_QUEUES               --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--            Copyright (C) 2011, Free Software Foundation, Inc.            --
--                                                                          --
-- 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 Ada.Unchecked_Deallocation;
 
package body Ada.Containers.Unbounded_Synchronized_Queues is
 
   package body Implementation is
 
      -----------------------
      -- Local Subprograms --
      -----------------------
 
      procedure Free is
         new Ada.Unchecked_Deallocation (Node_Type, Node_Access);
 
      -------------
      -- Dequeue --
      -------------
 
      procedure Dequeue
        (List    : in out List_Type;
         Element : out Queue_Interfaces.Element_Type)
      is
         X : Node_Access;
 
      begin
         Element := List.First.Element;
 
         X := List.First;
         List.First := List.First.Next;
 
         if List.First = null then
            List.Last := null;
         end if;
 
         List.Length := List.Length - 1;
 
         Free (X);
      end Dequeue;
 
      -------------
      -- Enqueue --
      -------------
 
      procedure Enqueue
        (List     : in out List_Type;
         New_Item : Queue_Interfaces.Element_Type)
      is
         Node : Node_Access;
 
      begin
         Node := new Node_Type'(New_Item, null);
 
         if List.First = null then
            List.First := Node;
            List.Last := List.First;
 
         else
            List.Last.Next := Node;
            List.Last := Node;
         end if;
 
         List.Length := List.Length + 1;
 
         if List.Length > List.Max_Length then
            List.Max_Length := List.Length;
         end if;
      end Enqueue;
 
      --------------
      -- Finalize --
      --------------
 
      procedure Finalize (List : in out List_Type) is
         X : Node_Access;
 
      begin
         while List.First /= null loop
            X := List.First;
            List.First := List.First.Next;
            Free (X);
         end loop;
      end Finalize;
 
      ------------
      -- Length --
      ------------
 
      function Length (List : List_Type) return Count_Type is
      begin
         return List.Length;
      end Length;
 
      ----------------
      -- Max_Length --
      ----------------
 
      function Max_Length (List : List_Type) return Count_Type is
      begin
         return List.Max_Length;
      end Max_Length;
 
   end Implementation;
 
   protected body Queue is
 
      -----------------
      -- Current_Use --
      -----------------
 
      function Current_Use return Count_Type is
      begin
         return List.Length;
      end Current_Use;
 
      -------------
      -- Dequeue --
      -------------
 
      entry Dequeue (Element : out Queue_Interfaces.Element_Type)
        when List.Length > 0
      is
      begin
         List.Dequeue (Element);
      end Dequeue;
 
      -------------
      -- Enqueue --
      -------------
 
      entry Enqueue (New_Item : Queue_Interfaces.Element_Type) when True is
      begin
         List.Enqueue (New_Item);
      end Enqueue;
 
      --------------
      -- Peak_Use --
      --------------
 
      function Peak_Use return Count_Type is
      begin
         return List.Max_Length;
      end Peak_Use;
 
   end Queue;
 
end Ada.Containers.Unbounded_Synchronized_Queues;

Line No.	Rev	Author	Line
1	706	jeremybenn	`------------------------------------------------------------------------------`
2			`-- --`
3			`-- GNAT LIBRARY COMPONENTS --`
4			`-- --`
5			`-- ADA.CONTAINERS.UNBOUNDED_SYNCHRONIZED_QUEUES --`
6			`-- --`
7			`-- B o d y --`
8			`-- --`
9			`-- Copyright (C) 2011, Free Software Foundation, Inc. --`
10			`-- --`
11			`-- GNAT is free software; you can redistribute it and/or modify it under --`
12			`-- terms of the GNU General Public License as published by the Free Soft- --`
13			`-- ware Foundation; either version 3, or (at your option) any later ver- --`
14			`-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --`
15			`-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --`
16			`-- or FITNESS FOR A PARTICULAR PURPOSE. --`
17			`-- --`
18			`-- As a special exception under Section 7 of GPL version 3, you are granted --`
19			`-- additional permissions described in the GCC Runtime Library Exception, --`
20			`-- version 3.1, as published by the Free Software Foundation. --`
21			`-- --`
22			`-- You should have received a copy of the GNU General Public License and --`
23			`-- a copy of the GCC Runtime Library Exception along with this program; --`
24			`-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --`
25			`-- <http://www.gnu.org/licenses/>. --`
26			`-- --`
27			`-- This unit was originally developed by Matthew J Heaney. --`
28			`------------------------------------------------------------------------------`
29
30			`with Ada.Unchecked_Deallocation;`
31
32			`package body Ada.Containers.Unbounded_Synchronized_Queues is`
33
34			`package body Implementation is`
35
36			`-----------------------`
37			`-- Local Subprograms --`
38			`-----------------------`
39
40			`procedure Free is`
41			`new Ada.Unchecked_Deallocation (Node_Type, Node_Access);`
42
43			`-------------`
44			`-- Dequeue --`
45			`-------------`
46
47			`procedure Dequeue`
48			`(List : in out List_Type;`
49			`Element : out Queue_Interfaces.Element_Type)`
50			`is`
51			`X : Node_Access;`
52
53			`begin`
54			`Element := List.First.Element;`
55
56			`X := List.First;`
57			`List.First := List.First.Next;`
58
59			`if List.First = null then`
60			`List.Last := null;`
61			`end if;`
62
63			`List.Length := List.Length - 1;`
64
65			`Free (X);`
66			`end Dequeue;`
67
68			`-------------`
69			`-- Enqueue --`
70			`-------------`
71
72			`procedure Enqueue`
73			`(List : in out List_Type;`
74			`New_Item : Queue_Interfaces.Element_Type)`
75			`is`
76			`Node : Node_Access;`
77
78			`begin`
79			`Node := new Node_Type'(New_Item, null);`
80
81			`if List.First = null then`
82			`List.First := Node;`
83			`List.Last := List.First;`
84
85			`else`
86			`List.Last.Next := Node;`
87			`List.Last := Node;`
88			`end if;`
89
90			`List.Length := List.Length + 1;`
91
92			`if List.Length > List.Max_Length then`
93			`List.Max_Length := List.Length;`
94			`end if;`
95			`end Enqueue;`
96
97			`--------------`
98			`-- Finalize --`
99			`--------------`
100
101			`procedure Finalize (List : in out List_Type) is`
102			`X : Node_Access;`
103
104			`begin`
105			`while List.First /= null loop`
106			`X := List.First;`
107			`List.First := List.First.Next;`
108			`Free (X);`
109			`end loop;`
110			`end Finalize;`
111
112			`------------`
113			`-- Length --`
114			`------------`
115
116			`function Length (List : List_Type) return Count_Type is`
117			`begin`
118			`return List.Length;`
119			`end Length;`
120
121			`----------------`
122			`-- Max_Length --`
123			`----------------`
124
125			`function Max_Length (List : List_Type) return Count_Type is`
126			`begin`
127			`return List.Max_Length;`
128			`end Max_Length;`
129
130			`end Implementation;`
131
132			`protected body Queue is`
133
134			`-----------------`
135			`-- Current_Use --`
136			`-----------------`
137
138			`function Current_Use return Count_Type is`
139			`begin`
140			`return List.Length;`
141			`end Current_Use;`
142
143			`-------------`
144			`-- Dequeue --`
145			`-------------`
146
147			`entry Dequeue (Element : out Queue_Interfaces.Element_Type)`
148			`when List.Length > 0`
149			`is`
150			`begin`
151			`List.Dequeue (Element);`
152			`end Dequeue;`
153
154			`-------------`
155			`-- Enqueue --`
156			`-------------`
157
158			`entry Enqueue (New_Item : Queue_Interfaces.Element_Type) when True is`
159			`begin`
160			`List.Enqueue (New_Item);`
161			`end Enqueue;`
162
163			`--------------`
164			`-- Peak_Use --`
165			`--------------`
166
167			`function Peak_Use return Count_Type is`
168			`begin`
169			`return List.Max_Length;`
170			`end Peak_Use;`
171
172			`end Queue;`
173
174			`end Ada.Containers.Unbounded_Synchronized_Queues;`

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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [a-cusyqu.adb] - Blame information for rev 707