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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT COMPILER COMPONENTS                         --
--                                                                          --
--                  G N A T . B O U N D E D _ B U F F E R S                 --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--                     Copyright (C) 2003-2010, AdaCore                     --
--                                                                          --
-- 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/>.                                          --
--                                                                          --
-- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com).   --
--                                                                          --
------------------------------------------------------------------------------
 
package body GNAT.Bounded_Buffers is
 
   --------------------
   -- Bounded_Buffer --
   --------------------
 
   protected body Bounded_Buffer is
 
      ------------
      -- Insert --
      ------------
 
      entry Insert (Item : Element) when Count /= Capacity is
      begin
         Values (Next_In) := Item;
         Next_In := (Next_In mod Capacity) + 1;
         Count := Count + 1;
      end Insert;
 
      ------------
      -- Remove --
      ------------
 
      entry Remove (Item : out Element) when Count > 0 is
      begin
         Item := Values (Next_Out);
         Next_Out := (Next_Out mod Capacity) + 1;
         Count := Count - 1;
      end Remove;
 
      -----------
      -- Empty --
      -----------
 
      function Empty return Boolean is
      begin
         return Count = 0;
      end Empty;
 
      ----------
      -- Full --
      ----------
 
      function Full return Boolean is
      begin
         return Count = Capacity;
      end Full;
 
      ------------
      -- Extent --
      ------------
 
      function Extent return Natural is
      begin
         return Count;
      end Extent;
 
   end Bounded_Buffer;
 
end GNAT.Bounded_Buffers;

Line No.	Rev	Author	Line
1	706	jeremybenn	`------------------------------------------------------------------------------`
2			`-- --`
3			`-- GNAT COMPILER COMPONENTS --`
4			`-- --`
5			`-- G N A T . B O U N D E D _ B U F F E R S --`
6			`-- --`
7			`-- B o d y --`
8			`-- --`
9			`-- Copyright (C) 2003-2010, AdaCore --`
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			`-- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com). --`
28			`-- --`
29			`------------------------------------------------------------------------------`
30
31			`package body GNAT.Bounded_Buffers is`
32
33			`--------------------`
34			`-- Bounded_Buffer --`
35			`--------------------`
36
37			`protected body Bounded_Buffer is`
38
39			`------------`
40			`-- Insert --`
41			`------------`
42
43			`entry Insert (Item : Element) when Count /= Capacity is`
44			`begin`
45			`Values (Next_In) := Item;`
46			`Next_In := (Next_In mod Capacity) + 1;`
47			`Count := Count + 1;`
48			`end Insert;`
49
50			`------------`
51			`-- Remove --`
52			`------------`
53
54			`entry Remove (Item : out Element) when Count > 0 is`
55			`begin`
56			`Item := Values (Next_Out);`
57			`Next_Out := (Next_Out mod Capacity) + 1;`
58			`Count := Count - 1;`
59			`end Remove;`
60
61			`-----------`
62			`-- Empty --`
63			`-----------`
64
65			`function Empty return Boolean is`
66			`begin`
67			`return Count = 0;`
68			`end Empty;`
69
70			`----------`
71			`-- Full --`
72			`----------`
73
74			`function Full return Boolean is`
75			`begin`
76			`return Count = Capacity;`
77			`end Full;`
78
79			`------------`
80			`-- Extent --`
81			`------------`
82
83			`function Extent return Natural is`
84			`begin`
85			`return Count;`
86			`end Extent;`
87
88			`end Bounded_Buffer;`
89
90			`end GNAT.Bounded_Buffers;`

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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [g-boubuf.adb] - Blame information for rev 747