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
104
105
106
107
108
|
// Copyright (C) 2006-2010 David Sugar, Tycho Softworks.
//
// This file is part of GNU uCommon C++.
//
// GNU uCommon C++ is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// GNU uCommon C++ 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with GNU uCommon C++. If not, see <http://www.gnu.org/licenses/>.
#include <config.h>
#include <ucommon/export.h>
#include <ucommon/access.h>
using namespace UCOMMON_NAMESPACE;
SharedProtocol::~SharedProtocol()
{
}
ExclusiveProtocol::~ExclusiveProtocol()
{
}
void SharedProtocol::Exclusive(void)
{
}
void SharedProtocol::Share(void)
{
}
shared_lock::shared_lock(SharedProtocol *obj)
{
assert(obj != NULL);
lock = obj;
modify = false;
lock->Shlock();
}
exclusive_lock::exclusive_lock(ExclusiveProtocol *obj)
{
assert(obj != NULL);
lock = obj;
lock->Exlock();
}
shared_lock::~shared_lock()
{
if(lock) {
if(modify)
lock->Share();
lock->Unlock();
lock = NULL;
modify = false;
}
}
exclusive_lock::~exclusive_lock()
{
if(lock) {
lock->Unlock();
lock = NULL;
}
}
void shared_lock::release()
{
if(lock) {
if(modify)
lock->Share();
lock->Unlock();
lock = NULL;
modify = false;
}
}
void exclusive_lock::release()
{
if(lock) {
lock->Unlock();
lock = NULL;
}
}
void shared_lock::exclusive(void)
{
if(lock && !modify) {
lock->Exclusive();
modify = true;
}
}
void shared_lock::share(void)
{
if(lock && modify) {
lock->Share();
modify = false;
}
}
|
