blob: f14461ddaf0fa3bbcc8d336bab91084598f62b1c (
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
|
#ifndef _posix_ScopedIncrement_h
#define _posix_ScopedIncrement_h
/*
*
* Copyright (c) 2006 The Apache Software Foundation
*
* Licensed 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.
*
*/
#include <boost/noncopyable.hpp>
namespace qpid {
namespace sys {
/** Increment counter in constructor and decrement in destructor. */
template <class T>
class ScopedIncrement : boost::noncopyable
{
public:
ScopedIncrement(T& c) : count(c) { ++count; }
~ScopedIncrement() { --count; }
private:
T& count;
};
/** Decrement counter in constructor and increment in destructor. */
template <class T>
class ScopedDecrement : boost::noncopyable
{
public:
ScopedDecrement(T& c) : count(c) { value = --count; }
~ScopedDecrement() { ++count; }
/** Return the value after the decrement. */
operator long() { return value; }
private:
T& count;
long value;
};
}}
#endif // _posix_ScopedIncrement_h
|
