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
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
|
/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QBASICATOMIC_H
#define QBASICATOMIC_H
#include <QtCore/qglobal.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
class Q_CORE_EXPORT QBasicAtomicInt
{
public:
#ifdef QT_ARCH_PARISC
int _q_lock[4];
#endif
#if defined(QT_ARCH_WINDOWS) || defined(QT_ARCH_WINDOWSCE)
union { // needed for Q_BASIC_ATOMIC_INITIALIZER
volatile long _q_value;
};
#else
volatile int _q_value;
#endif
// Non-atomic API
inline bool operator==(int value) const
{
return _q_value == value;
}
inline bool operator!=(int value) const
{
return _q_value != value;
}
inline bool operator!() const
{
return _q_value == 0;
}
inline operator int() const
{
return _q_value;
}
inline QBasicAtomicInt &operator=(int value)
{
#ifdef QT_ARCH_PARISC
this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1;
#endif
_q_value = value;
return *this;
}
// Atomic API, implemented in qatomic_XXX.h
static bool isReferenceCountingNative();
static bool isReferenceCountingWaitFree();
bool ref();
bool deref();
static bool isTestAndSetNative();
static bool isTestAndSetWaitFree();
bool testAndSetRelaxed(int expectedValue, int newValue);
bool testAndSetAcquire(int expectedValue, int newValue);
bool testAndSetRelease(int expectedValue, int newValue);
bool testAndSetOrdered(int expectedValue, int newValue);
static bool isFetchAndStoreNative();
static bool isFetchAndStoreWaitFree();
int fetchAndStoreRelaxed(int newValue);
int fetchAndStoreAcquire(int newValue);
int fetchAndStoreRelease(int newValue);
int fetchAndStoreOrdered(int newValue);
static bool isFetchAndAddNative();
static bool isFetchAndAddWaitFree();
int fetchAndAddRelaxed(int valueToAdd);
int fetchAndAddAcquire(int valueToAdd);
int fetchAndAddRelease(int valueToAdd);
int fetchAndAddOrdered(int valueToAdd);
};
template <typename T>
class QBasicAtomicPointer
{
public:
#ifdef QT_ARCH_PARISC
int _q_lock[4];
#endif
#if defined(QT_ARCH_WINDOWS) || defined(QT_ARCH_WINDOWSCE)
union {
T * volatile _q_value;
# if !defined(Q_OS_WINCE) && !defined(__i386__) && !defined(_M_IX86)
qint64
# else
long
# endif
volatile _q_value_integral;
};
#else
T * volatile _q_value;
#endif
// Non-atomic API
inline bool operator==(T *value) const
{
return _q_value == value;
}
inline bool operator!=(T *value) const
{
return !operator==(value);
}
inline bool operator!() const
{
return operator==(0);
}
inline operator T *() const
{
return _q_value;
}
inline T *operator->() const
{
return _q_value;
}
inline QBasicAtomicPointer<T> &operator=(T *value)
{
#ifdef QT_ARCH_PARISC
this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1;
#endif
_q_value = value;
return *this;
}
// Atomic API, implemented in qatomic_XXX.h
static bool isTestAndSetNative();
static bool isTestAndSetWaitFree();
bool testAndSetRelaxed(T *expectedValue, T *newValue);
bool testAndSetAcquire(T *expectedValue, T *newValue);
bool testAndSetRelease(T *expectedValue, T *newValue);
bool testAndSetOrdered(T *expectedValue, T *newValue);
static bool isFetchAndStoreNative();
static bool isFetchAndStoreWaitFree();
T *fetchAndStoreRelaxed(T *newValue);
T *fetchAndStoreAcquire(T *newValue);
T *fetchAndStoreRelease(T *newValue);
T *fetchAndStoreOrdered(T *newValue);
static bool isFetchAndAddNative();
static bool isFetchAndAddWaitFree();
T *fetchAndAddRelaxed(qptrdiff valueToAdd);
T *fetchAndAddAcquire(qptrdiff valueToAdd);
T *fetchAndAddRelease(qptrdiff valueToAdd);
T *fetchAndAddOrdered(qptrdiff valueToAdd);
};
#ifdef QT_ARCH_PARISC
# define Q_BASIC_ATOMIC_INITIALIZER(a) {{-1,-1,-1,-1},(a)}
#elif defined(QT_ARCH_WINDOWS) || defined(QT_ARCH_WINDOWSCE)
# define Q_BASIC_ATOMIC_INITIALIZER(a) { {(a)} }
#else
# define Q_BASIC_ATOMIC_INITIALIZER(a) { (a) }
#endif
QT_END_NAMESPACE
QT_END_HEADER
#if defined(QT_MOC) || defined(QT_BUILD_QMAKE) || defined(QT_RCC) || defined(QT_UIC) || defined(QT_BOOTSTRAPPED)
# include <QtCore/qatomic_bootstrap.h>
#else
# include <QtCore/qatomic_arch.h>
#endif
#endif // QBASIC_ATOMIC
|
