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# qatomic_symbian.h

Go to the documentation of this file.

    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtCore module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    00012 ** accordance with the Qt Commercial License Agreement provided with the
    00013 ** Software or, alternatively, in accordance with the terms contained in
    00014 ** a written agreement between you and Nokia.
    00015 **
    00016 ** GNU Lesser General Public License Usage
    00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QATOMIC_SYMBIAN_H
    00043 #define QATOMIC_SYMBIAN_H
    00044
    00045 #include <QtCore/qglobal.h>
    00046 #include <e32std.h>
    00047
    00048 QT_BEGIN_HEADER
    00049
    00050 QT_BEGIN_NAMESPACE
    00051
    00052 QT_MODULE(Core)
    00053
    00054 #define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE
    00055
    00056 inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
    00057 { return false; }
    00058
    00059 #define Q_ATOMIC_INT_TEST_AND_SET_IS_SOMETIMES_NATIVE
    00060
    00061 inline bool QBasicAtomicInt::isTestAndSetWaitFree()
    00062 { return false; }
    00063
    00064 #define Q_ATOMIC_INT_FETCH_AND_STORE_IS_SOMETIMES_NATIVE
    00065
    00066 inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
    00067 { return false; }
    00068
    00069 #define Q_ATOMIC_INT_FETCH_AND_ADD_IS_SOMETIMES_NATIVE
    00070
    00071 inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
    00072 { return false; }
    00073
    00074 #define Q_ATOMIC_POINTER_TEST_AND_SET_IS_SOMETIMES_NATIVE
    00075
    00076 Q_CORE_EXPORT bool QBasicAtomicPointer_isTestAndSetNative();
    00077 template <typename T>
    00078 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
    00079 { return QBasicAtomicPointer_isTestAndSetNative(); }
    00080 template <typename T>
    00081 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
    00082 { return false; }
    00083
    00084 #define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_SOMETIMES_NATIVE
    00085
    00086 Q_CORE_EXPORT bool QBasicAtomicPointer_isFetchAndStoreNative();
    00087 template <typename T>
    00088 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
    00089 { return QBasicAtomicPointer_isFetchAndStoreNative(); }
    00090 template <typename T>
    00091 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
    00092 { return false; }
    00093
    00094 #define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_SOMETIMES_NATIVE
    00095
    00096 Q_CORE_EXPORT bool QBasicAtomicPointer_isFetchAndAddNative();
    00097 template <typename T>
    00098 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
    00099 { return QBasicAtomicPointer_isFetchAndAddNative(); }
    00100 template <typename T>
    00101 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
    00102 { return false; }
    00103
    00104 Q_CORE_EXPORT bool QBasicAtomicInt_testAndSetOrdered(volatile int *, int, int);
    00105 Q_CORE_EXPORT int QBasicAtomicInt_fetchAndStoreOrdered(volatile int *, int);
    00106 Q_CORE_EXPORT int QBasicAtomicInt_fetchAndAddOrdered(volatile int *, int);
    00107 Q_CORE_EXPORT bool QBasicAtomicInt_testAndSetRelaxed(volatile int *, int, int);
    00108 Q_CORE_EXPORT int QBasicAtomicInt_fetchAndStoreRelaxed(volatile int *, int);
    00109 Q_CORE_EXPORT int QBasicAtomicInt_fetchAndAddRelaxed(volatile int *, int);
    00110 Q_CORE_EXPORT bool QBasicAtomicInt_testAndSetAcquire(volatile int *, int, int);
    00111 Q_CORE_EXPORT int QBasicAtomicInt_fetchAndStoreAcquire(volatile int *, int);
    00112 Q_CORE_EXPORT int QBasicAtomicInt_fetchAndAddAcquire(volatile int *, int);
    00113 Q_CORE_EXPORT bool QBasicAtomicInt_testAndSetRelease(volatile int *, int, int);
    00114 Q_CORE_EXPORT int QBasicAtomicInt_fetchAndStoreRelease(volatile int *, int);
    00115 Q_CORE_EXPORT int QBasicAtomicInt_fetchAndAddRelease(volatile int *, int);
    00116
    00117 Q_CORE_EXPORT bool QBasicAtomicPointer_testAndSetOrdered(void * volatile *, void *, void *);
    00118 Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndStoreOrdered(void * volatile *, void *);
    00119 Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndAddOrdered(void * volatile *, qptrdiff);
    00120 Q_CORE_EXPORT bool QBasicAtomicPointer_testAndSetRelaxed(void * volatile *, void *, void *);
    00121 Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndStoreRelaxed(void * volatile *, void *);
    00122 Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndAddRelaxed(void * volatile *, qptrdiff);
    00123 Q_CORE_EXPORT bool QBasicAtomicPointer_testAndSetAcquire(void * volatile *, void *, void *);
    00124 Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndStoreAcquire(void * volatile *, void *);
    00125 Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndAddAcquire(void * volatile *, qptrdiff);
    00126 Q_CORE_EXPORT bool QBasicAtomicPointer_testAndSetRelease(void * volatile *, void *, void *);
    00127 Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndStoreRelease(void * volatile *, void *);
    00128 Q_CORE_EXPORT void *QBasicAtomicPointer_fetchAndAddRelease(void * volatile *, qptrdiff);
    00129
    00130 // Reference counting
    00131
    00132 //LockedInc and LockedDec are machine coded for ARMv6 (and future proof)
    00133 inline bool QBasicAtomicInt::ref()
    00134 {
    00135     int original = User::LockedInc((TInt&)_q_value);
    00136     return original != -1;
    00137 }
    00138
    00139 inline bool QBasicAtomicInt::deref()
    00140 {
    00141     int original = User::LockedDec((TInt&)_q_value);
    00142     return original != 1;
    00143 }
    00144
    00145 // Test and set for integers
    00146
    00147 inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
    00148 {
    00149     return QBasicAtomicInt_testAndSetOrdered(&_q_value, expectedValue, newValue);
    00150 }
    00151
    00152 inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
    00153 {
    00154     return QBasicAtomicInt_testAndSetRelaxed(&_q_value, expectedValue, newValue);
    00155 }
    00156
    00157 inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
    00158 {
    00159     return QBasicAtomicInt_testAndSetAcquire(&_q_value, expectedValue, newValue);
    00160 }
    00161
    00162 inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
    00163 {
    00164     return QBasicAtomicInt_testAndSetRelease(&_q_value, expectedValue, newValue);
    00165 }
    00166
    00167 // Fetch and store for integers
    00168
    00169 inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
    00170 {
    00171     return QBasicAtomicInt_fetchAndStoreOrdered(&_q_value, newValue);
    00172 }
    00173
    00174 inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
    00175 {
    00176     return QBasicAtomicInt_fetchAndStoreRelaxed(&_q_value, newValue);
    00177 }
    00178
    00179 inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
    00180 {
    00181     return QBasicAtomicInt_fetchAndStoreAcquire(&_q_value, newValue);
    00182 }
    00183
    00184 inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
    00185 {
    00186     return QBasicAtomicInt_fetchAndStoreRelease(&_q_value, newValue);
    00187 }
    00188
    00189 // Fetch and add for integers
    00190
    00191 inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
    00192 {
    00193     return QBasicAtomicInt_fetchAndAddOrdered(&_q_value, valueToAdd);
    00194 }
    00195
    00196 inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
    00197 {
    00198     return QBasicAtomicInt_fetchAndAddRelaxed(&_q_value, valueToAdd);
    00199 }
    00200
    00201 inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
    00202 {
    00203     return QBasicAtomicInt_fetchAndAddAcquire(&_q_value, valueToAdd);
    00204 }
    00205
    00206 inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
    00207 {
    00208     return QBasicAtomicInt_fetchAndAddRelease(&_q_value, valueToAdd);
    00209 }
    00210
    00211 // Test and set for pointers
    00212
    00213 template <typename T>
    00214 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
    00215 {
    00216     return QBasicAtomicPointer_testAndSetOrdered(reinterpret_cast<void * volatile *>(&_q_value),
    00217         expectedValue, newValue);
    00218 }
    00219
    00220 template <typename T>
    00221 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
    00222 {
    00223     return QBasicAtomicPointer_testAndSetRelaxed(reinterpret_cast<void * volatile *>(&_q_value),
    00224         expectedValue, newValue);
    00225 }
    00226
    00227 template <typename T>
    00228 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
    00229 {
    00230     return QBasicAtomicPointer_testAndSetAcquire(reinterpret_cast<void * volatile *>(&_q_value),
    00231         expectedValue, newValue);
    00232 }
    00233
    00234 template <typename T>
    00235 Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
    00236 {
    00237     return QBasicAtomicPointer_testAndSetRelease(reinterpret_cast<void * volatile *>(&_q_value),
    00238         expectedValue, newValue);
    00239 }
    00240
    00241 // Fetch and store for pointers
    00242
    00243 template <typename T>
    00244 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue)
    00245 {
    00246     return static_cast<T*>(QBasicAtomicPointer_fetchAndStoreOrdered(
    00247         reinterpret_cast<void * volatile *>(&_q_value)
    00248         , newValue));
    00249 }
    00250
    00251 template <typename T>
    00252 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
    00253 {
    00254     return static_cast<T*>(QBasicAtomicPointer_fetchAndStoreRelaxed(
    00255         reinterpret_cast<void * volatile *>(&_q_value)
    00256         , newValue));
    00257 }
    00258
    00259 template <typename T>
    00260 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
    00261 {
    00262     return static_cast<T*>(QBasicAtomicPointer_fetchAndStoreAcquire(
    00263         reinterpret_cast<void * volatile *>(&_q_value)
    00264         , newValue));
    00265 }
    00266
    00267 template <typename T>
    00268 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
    00269 {
    00270     return static_cast<T*>(QBasicAtomicPointer_fetchAndStoreRelease(
    00271         reinterpret_cast<void * volatile *>(&_q_value)
    00272         , newValue));
    00273 }
    00274
    00275 // Fetch and add for pointers
    00276
    00277 template <typename T>
    00278 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
    00279 {
    00280     return static_cast<T*>(QBasicAtomicPointer_fetchAndAddOrdered(
    00281         reinterpret_cast<void * volatile *>(&_q_value),
    00282         valueToAdd * sizeof(T)));
    00283 }
    00284
    00285 template <typename T>
    00286 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
    00287 {
    00288     return static_cast<T*>(QBasicAtomicPointer_fetchAndAddRelaxed(
    00289         reinterpret_cast<void * volatile *>(&_q_value),
    00290         valueToAdd * sizeof(T)));
    00291 }
    00292
    00293 template <typename T>
    00294 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
    00295 {
    00296     return static_cast<T*>(QBasicAtomicPointer_fetchAndAddAcquire(
    00297         reinterpret_cast<void * volatile *>(&_q_value),
    00298         valueToAdd * sizeof(T)));
    00299 }
    00300
    00301 template <typename T>
    00302 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
    00303 {
    00304     return static_cast<T*>(QBasicAtomicPointer_fetchAndAddRelease(
    00305         reinterpret_cast<void * volatile *>(&_q_value),
    00306         valueToAdd * sizeof(T)));
    00307 }
    00308
    00309 QT_END_NAMESPACE
    00310
    00311 QT_END_HEADER
    00312
    00313 #endif // QATOMIC_SYMBIAN_H