blob: 0ed591b8049262220cb94ab2d40ed34a5418375a (
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
|
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#ifndef _framing_SequenceNumber_h
#define _framing_SequenceNumber_h
#include "amqp_types.h"
namespace qpid {
namespace framing {
/**
* 4-byte sequence number that 'wraps around'.
*/
class SequenceNumber
{
int32_t value;
public:
SequenceNumber();
SequenceNumber(uint32_t v);
SequenceNumber& operator++();//prefix ++
const SequenceNumber operator++(int);//postfix ++
SequenceNumber& operator--();//prefix ++
bool operator==(const SequenceNumber& other) const;
bool operator!=(const SequenceNumber& other) const;
bool operator<(const SequenceNumber& other) const;
bool operator>(const SequenceNumber& other) const;
bool operator<=(const SequenceNumber& other) const;
bool operator>=(const SequenceNumber& other) const;
uint32_t getValue() const { return (uint32_t) value; }
operator uint32_t() const { return (uint32_t) value; }
friend int32_t operator-(const SequenceNumber& a, const SequenceNumber& b);
template <class S> void serialize(S& s) { s(value); }
};
struct Window
{
SequenceNumber hwm;
SequenceNumber lwm;
};
}} // namespace qpid::framing
#endif
|