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
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QATOMIC_H
#define QATOMIC_H
#include <QtCore/qglobal.h>
#include <QtCore/qbasicatomic.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
// High-level atomic integer operations
class Q_CORE_EXPORT QAtomicInt : public QBasicAtomicInt
{
public:
inline QAtomicInt(int value = 0)
{
#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;
}
inline QAtomicInt(const QAtomicInt &other)
{
#ifdef QT_ARCH_PARISC
this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1;
#endif
_q_value = other._q_value;
}
inline QAtomicInt &operator=(int value)
{
(void) QBasicAtomicInt::operator=(value);
return *this;
}
inline QAtomicInt &operator=(const QAtomicInt &other)
{
(void) QBasicAtomicInt::operator=(other);
return *this;
}
#ifdef qdoc
bool operator==(int value) const;
bool operator!=(int value) const;
bool operator!() const;
operator int() const;
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);
#endif
};
// High-level atomic pointer operations
template <typename T>
class QAtomicPointer : public QBasicAtomicPointer<T>
{
public:
inline QAtomicPointer(T *value = 0)
{
#ifdef QT_ARCH_PARISC
this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1;
#endif
QBasicAtomicPointer<T>::_q_value = value;
}
inline QAtomicPointer(const QAtomicPointer<T> &other)
{
#ifdef QT_ARCH_PARISC
this->_q_lock[0] = this->_q_lock[1] = this->_q_lock[2] = this->_q_lock[3] = -1;
#endif
QBasicAtomicPointer<T>::_q_value = other._q_value;
}
inline QAtomicPointer<T> &operator=(T *value)
{
(void) QBasicAtomicPointer<T>::operator=(value);
return *this;
}
inline QAtomicPointer<T> &operator=(const QAtomicPointer<T> &other)
{
(void) QBasicAtomicPointer<T>::operator=(other);
return *this;
}
#ifdef qdoc
bool operator==(T *value) const;
bool operator!=(T *value) const;
bool operator!() const;
operator T *() const;
T *operator->() const;
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);
#endif
};
/*!
This is a helper for the assignment operators of implicitly
shared classes. Your assignment operator should look like this:
\snippet doc/src/snippets/code/src.corelib.thread.qatomic.h 0
*/
template <typename T>
inline void qAtomicAssign(T *&d, T *x)
{
if (d == x)
return;
x->ref.ref();
if (!d->ref.deref())
delete d;
d = x;
}
/*!
This is a helper for the detach method of implicitly shared
classes. Your private class needs a copy constructor which copies
the members and sets the refcount to 1. After that, your detach
function should look like this:
\snippet doc/src/snippets/code/src.corelib.thread.qatomic.h 1
*/
template <typename T>
inline void qAtomicDetach(T *&d)
{
if (d->ref == 1)
return;
T *x = d;
d = new T(*d);
if (!x->ref.deref())
delete x;
}
QT_END_NAMESPACE
QT_END_HEADER
#endif // QATOMIC_H
|
