ims_lock.h
1.96 KB
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 2002-2014 the original author or authors.
*
* 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
*
* CC/LICENSE
*
* 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 __IMS_LOCK_H_
#define __IMS_LOCK_H_
#include <errno.h>
#include <pthread.h>
/**
* @brief 读写锁封装
* detail description
*
*/
class rw_lock_t {
public:
/**
* @brief 构造并加锁
*
* @param [in/out] mutex : pthread_mutex_t&
* @param [in/out] write : bool
* @see
* @note
* @author chenyuzhen
* @date 2011/11/16 22:47:18
**/
rw_lock_t(pthread_rwlock_t& mutex, bool write = false): _mutex(mutex), _locked(false) {
if (write) {
_locked = (pthread_rwlock_wrlock(&_mutex) == 0);
} else {
_locked = (pthread_rwlock_rdlock(&_mutex) == 0);
}
}
/**
* @brief 析构并解锁
*
* @see
* @note
* @author chenyuzhen
* @date 2011/11/16 22:48:10
**/
~rw_lock_t() {
unlock();
}
/**
* @brief 解锁
*
*/
void unlock() {
if (_locked) {
pthread_rwlock_unlock(&_mutex);
_locked = false;
}
}
/**
* @brief 判断是否加锁成功
*
* @return bool
* @retval
* @see
* @note
* @author chenyuzhen
* @date 2011/11/16 22:57:36
**/
bool locked() const {
return _locked;
}
private:
pthread_rwlock_t& _mutex; ///<锁
bool _locked; ///<是否加锁
};
#endif //__IMS_LOCK_H_
/* vim: set expandtab ts=4 sw=4 sts=4 tw=100: */