blob: 9d8cedbcf94e2db97298de171d1e0dc17057f738 (
plain)
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
|
/*
* Copyright (C) 2018 Codership Oy <info@codership.com>
*
* This file is part of wsrep-lib.
*
* Wsrep-lib 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.
*
* Wsrep-lib 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 wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef WSREP_SEQNO_HPP
#define WSREP_SEQNO_HPP
#include <iosfwd>
namespace wsrep
{
/** @class seqno
*
* Sequence number type.
*/
class seqno
{
public:
typedef long long native_type;
seqno()
: seqno_(-1)
{ }
explicit seqno(long long seqno)
: seqno_(seqno)
{ }
long long get() const
{
return seqno_;
}
bool is_undefined() const
{
return (seqno_ == -1);
}
bool operator<(seqno other) const
{
return (seqno_ < other.seqno_);
}
bool operator>(seqno other) const
{
return (seqno_ > other.seqno_);
}
bool operator<=(seqno other) const
{
return !(seqno_ > other.seqno_);
}
bool operator>=(seqno other) const
{
return !(seqno_ < other.seqno_);
}
bool operator==(seqno other) const
{
return (seqno_ == other.seqno_);
}
bool operator!=(seqno other) const
{
return !(seqno_ == other.seqno_);
}
seqno operator+(seqno other) const
{
return (seqno(seqno_ + other.seqno_));
}
seqno operator+(long long other) const
{
return (*this + seqno(other));
}
static seqno undefined() { return seqno(-1); }
private:
native_type seqno_;
};
std::ostream& operator<<(std::ostream& os, wsrep::seqno seqno);
}
#endif // WSREP_SEQNO_HPP
|
