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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) 2003-2006, 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 2,  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.  See the GNU General Public License --
-- for  more details.  You should have  received  a copy of the GNU General --
-- Public License  distributed with GNAT;  see file COPYING.  If not, write --
-- to  the  Free Software Foundation,  51  Franklin  Street,  Fifth  Floor, --
-- Boston, MA 02110-1301, USA.                                              --
--                                                                          --
-- As a special exception,  if other files  instantiate  generics from this --
-- unit, or you link  this unit with other files  to produce an executable, --
-- this  unit  does not  by itself cause  the resulting  executable  to  be --
-- covered  by the  GNU  General  Public  License.  This exception does not --
-- however invalidate  any other reasons why  the executable file  might be --
-- covered by the  GNU Public License.                                      --
--                                                                          --
-- 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	281	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) 2003-2006, 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 2, 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. See the GNU General Public License --`
17			`-- for more details. You should have received a copy of the GNU General --`
18			`-- Public License distributed with GNAT; see file COPYING. If not, write --`
19			`-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --`
20			`-- Boston, MA 02110-1301, USA. --`
21			`-- --`
22			`-- As a special exception, if other files instantiate generics from this --`
23			`-- unit, or you link this unit with other files to produce an executable, --`
24			`-- this unit does not by itself cause the resulting executable to be --`
25			`-- covered by the GNU General Public License. This exception does not --`
26			`-- however invalidate any other reasons why the executable file might be --`
27			`-- covered by the GNU Public License. --`
28			`-- --`
29			`-- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com). --`
30			`-- --`
31			`------------------------------------------------------------------------------`
32
33			`package body GNAT.Bounded_Buffers is`
34
35			`--------------------`
36			`-- Bounded_Buffer --`
37			`--------------------`
38
39			`protected body Bounded_Buffer is`
40
41			`------------`
42			`-- Insert --`
43			`------------`
44
45			`entry Insert (Item : Element) when Count /= Capacity is`
46			`begin`
47			`Values (Next_In) := Item;`
48			`Next_In := (Next_In mod Capacity) + 1;`
49			`Count := Count + 1;`
50			`end Insert;`
51
52			`------------`
53			`-- Remove --`
54			`------------`
55
56			`entry Remove (Item : out Element) when Count > 0 is`
57			`begin`
58			`Item := Values (Next_Out);`
59			`Next_Out := (Next_Out mod Capacity) + 1;`
60			`Count := Count - 1;`
61			`end Remove;`
62
63			`-----------`
64			`-- Empty --`
65			`-----------`
66
67			`function Empty return Boolean is`
68			`begin`
69			`return Count = 0;`
70			`end Empty;`
71
72			`----------`
73			`-- Full --`
74			`----------`
75
76			`function Full return Boolean is`
77			`begin`
78			`return Count = Capacity;`
79			`end Full;`
80
81			`------------`
82			`-- Extent --`
83			`------------`
84
85			`function Extent return Natural is`
86			`begin`
87			`return Count;`
88			`end Extent;`
89
90			`end Bounded_Buffer;`
91
92			`end GNAT.Bounded_Buffers;`

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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [ada/] [g-boubuf.adb] - Blame information for rev 847