Project

General

Profile

Download (1.94 KB) Statistics
| Branch: | Tag: | Revision:
1 d93979b7 Arnaud Dieumegard
2
-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
3
4
-- This file is part of VESTs (Vhdl tESTs).
5
6
-- VESTs is free software; you can redistribute it and/or modify it
7
-- under the terms of the GNU General Public License as published by the
8
-- Free Software Foundation; either version 2 of the License, or (at
9
-- your option) any later version. 
10
11
-- VESTs is distributed in the hope that it will be useful, but WITHOUT
12
-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13
-- FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14
-- for more details. 
15
16
-- You should have received a copy of the GNU General Public License
17
-- along with VESTs; if not, write to the Free Software Foundation,
18
-- Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
19
20
-- ---------------------------------------------------------------------
21
--
22
-- $Id: ch_19_wtfifo.vhd,v 1.3 2001-10-26 16:29:36 paw Exp $
23
-- $Revision: 1.3 $
24
--
25
-- ---------------------------------------------------------------------
26
27
library qsim;
28
29
package waiting_token_fifo_adt is
30
31
  alias element_type is qsim.queue_types.waiting_token_type;
32
33
  type fifo_record;
34
35
  type fifo_type is access fifo_record;
36
37
  function new_fifo return fifo_type;
38
39
  procedure test_empty ( variable fifo : in fifo_type;
40
                         variable is_empty : out boolean );
41
42
  procedure insert ( fifo : inout fifo_type;
43
                     element : in element_type );
44
45
  procedure remove ( fifo : inout fifo_type;
46
                     element : out element_type );
47
48
  -- private types
49
50
  type fifo_entry_record;
51
52
  type fifo_entry is access fifo_entry_record;
53
54
  type fifo_entry_record is record
55
                              next_entry : fifo_entry;
56
                              element : element_type;
57
                            end record;
58
59
  type fifo_record is record
60
                        head_entry, tail_entry : fifo_entry;
61
                      end record;
62
63
end package waiting_token_fifo_adt;