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
|
/*
Copyright (C) 2003-2008 Fons Adriaensen <fons@kokkinizita.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __LFQUEUE_H
#define __LFQUEUE_H
#include <stdint.h>
class Lfq_u8
{
public:
Lfq_u8 (int size);
~Lfq_u8 (void);
int write_avail (void) const { return _size - _nwr + _nrd; }
void write_commit (int n) { _nwr += n; }
void write (int i, uint8_t v) { _data [(_nwr + i) & _mask] = v; }
int read_avail (void) const { return _nwr - _nrd; }
void read_commit (int n) { _nrd += n; }
uint8_t read (int i) { return _data [(_nrd + i) & _mask]; }
private:
uint8_t * _data;
int _size;
int _mask;
int _nwr;
int _nrd;
};
class Lfq_u16
{
public:
Lfq_u16 (int size);
~Lfq_u16 (void);
int write_avail (void) const { return _size - _nwr + _nrd; }
void write_commit (int n) { _nwr += n; }
void write (int i, uint16_t v) { _data [(_nwr + i) & _mask] = v; }
int read_avail (void) const { return _nwr - _nrd; }
void read_commit (int n) { _nrd += n; }
uint16_t read (int i) { return _data [(_nrd + i) & _mask]; }
private:
uint16_t *_data;
int _size;
int _mask;
int _nwr;
int _nrd;
};
class Lfq_u32
{
public:
Lfq_u32 (int size);
~Lfq_u32 (void);
int write_avail (void) const { return _size - _nwr + _nrd; }
void write_commit (int n) { _nwr += n; }
void write (int i, uint32_t v) { _data [(_nwr + i) & _mask] = v; }
int read_avail (void) const { return _nwr - _nrd; }
void read_commit (int n) { _nrd += n; }
uint32_t read (int i) { return _data [(_nrd + i) & _mask]; }
private:
uint32_t *_data;
int _size;
int _mask;
int _nwr;
int _nrd;
};
#endif
|
