diff options
Diffstat (limited to 'src/corelib/arch/symbian/qatomic_symbian.cpp')
-rw-r--r-- | src/corelib/arch/symbian/qatomic_symbian.cpp | 527 |
1 files changed, 527 insertions, 0 deletions
diff --git a/src/corelib/arch/symbian/qatomic_symbian.cpp b/src/corelib/arch/symbian/qatomic_symbian.cpp new file mode 100644 index 0000000000..9b997e1a70 --- /dev/null +++ b/src/corelib/arch/symbian/qatomic_symbian.cpp @@ -0,0 +1,527 @@ +/**************************************************************************** +** +** Copyright (C) 2011 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtCore/qglobal.h> +#include <QtCore/qatomic.h> + +#ifdef SYMBIAN_E32_ATOMIC_API +#include <e32atomics.h> +#endif + +#include <e32debug.h> + +QT_BEGIN_NAMESPACE + +// Heap and handle info printer. +// This way we can report on heap cells and handles that are really not owned by anything which still exists. +// This information can be used to detect whether memory leaks are happening, particularly if these numbers grow as the app is used more. +// This code is placed here as it happens to make it the very last static to be destroyed in a Qt app. The +// reason assumed is that this file appears before any other file declaring static data in the generated +// Symbian MMP file. This particular file was chosen as it is the earliest symbian specific file. +struct QSymbianPrintExitInfo +{ + QSymbianPrintExitInfo() + { + RThread().HandleCount(initProcessHandleCount, initThreadHandleCount); + initCells = User::CountAllocCells(); + } + ~QSymbianPrintExitInfo() + { + RProcess myProc; + TFullName fullName = myProc.FileName(); + TInt cells = User::CountAllocCells(); + TInt processHandleCount=0; + TInt threadHandleCount=0; + RThread().HandleCount(processHandleCount, threadHandleCount); + RDebug::Print(_L("%S exiting with %d allocated cells, %d handles"), + &fullName, + cells - initCells, + (processHandleCount + threadHandleCount) - (initProcessHandleCount + initThreadHandleCount)); + } + TInt initCells; + TInt initProcessHandleCount; + TInt initThreadHandleCount; +} symbian_printExitInfo; + +Q_CORE_EXPORT bool QBasicAtomicInt::isReferenceCountingNative() +{ +#if !defined(SYMBIAN_E32_ATOMIC_API) && defined(QT_HAVE_ARMV6) + return true; +#else + return false; +#endif +} + +Q_CORE_EXPORT bool QBasicAtomicInt::isTestAndSetNative() +{ +#if !defined(SYMBIAN_E32_ATOMIC_API) && defined(QT_HAVE_ARMV6) + return true; +#else + return false; +#endif +} + +Q_CORE_EXPORT bool QBasicAtomicInt::isFetchAndStoreNative() +{ +#if !defined(SYMBIAN_E32_ATOMIC_API) && defined(QT_HAVE_ARMV6) + return true; +#else + return false; +#endif +} + +Q_CORE_EXPORT bool QBasicAtomicInt::isFetchAndAddNative() +{ +#if !defined(SYMBIAN_E32_ATOMIC_API) && defined(QT_HAVE_ARMV6) + return true; +#else + return false; +#endif +} + +Q_CORE_EXPORT bool QBasicAtomicPointer_isTestAndSetNative() +{ +#if !defined(SYMBIAN_E32_ATOMIC_API) && defined(QT_HAVE_ARMV6) + return true; +#else + return false; +#endif +} + +Q_CORE_EXPORT bool QBasicAtomicPointer_isFetchAndStoreNative() +{ +#if !defined(SYMBIAN_E32_ATOMIC_API) && defined(QT_HAVE_ARMV6) + return true; +#else + return false; +#endif +} + +Q_CORE_EXPORT bool QBasicAtomicPointer_isFetchAndAddNative() +{ +#if !defined(SYMBIAN_E32_ATOMIC_API) && defined(QT_HAVE_ARMV6) + return true; +#else + return false; +#endif +} + +#ifdef SYMBIAN_E32_ATOMIC_API +//Symbian's API is SMP-safe when using SMP kernel, and cheap when using uniprocessor kernel + +//generate compiler error if casting assumptions are wrong (symbian64?) +__ASSERT_COMPILE(sizeof(int) == sizeof(TUint32)); +__ASSERT_COMPILE(sizeof(void *) == sizeof(TUint32)); + +Q_CORE_EXPORT +bool QBasicAtomicInt_testAndSetOrdered(volatile int *_q_value, int expectedValue, int newValue) +{ + return static_cast<bool>(__e32_atomic_cas_ord32(_q_value, + reinterpret_cast<TUint32*>(&expectedValue), newValue)); +} + +Q_CORE_EXPORT +bool QBasicAtomicInt_testAndSetRelaxed(volatile int *_q_value, int expectedValue, int newValue) +{ + return static_cast<bool>(__e32_atomic_cas_rlx32(_q_value, + reinterpret_cast<TUint32*>(&expectedValue), newValue)); +} + +Q_CORE_EXPORT +bool QBasicAtomicInt_testAndSetAcquire(volatile int *_q_value, int expectedValue, int newValue) +{ + return static_cast<bool>(__e32_atomic_cas_acq32(_q_value, + reinterpret_cast<TUint32*>(&expectedValue), newValue)); +} + +Q_CORE_EXPORT +bool QBasicAtomicInt_testAndSetRelease(volatile int *_q_value, int expectedValue, int newValue) +{ + return static_cast<bool>(__e32_atomic_cas_rel32(_q_value, + reinterpret_cast<TUint32*>(&expectedValue), newValue)); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndStoreOrdered(volatile int *_q_value, int newValue) +{ + return static_cast<int>(__e32_atomic_swp_ord32(_q_value, newValue)); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndStoreRelaxed(volatile int *_q_value, int newValue) +{ + return static_cast<int>(__e32_atomic_swp_rlx32(_q_value, newValue)); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndStoreAcquire(volatile int *_q_value, int newValue) +{ + return static_cast<int>(__e32_atomic_swp_acq32(_q_value, newValue)); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndStoreRelease(volatile int *_q_value, int newValue) +{ + return static_cast<int>(__e32_atomic_swp_rel32(_q_value, newValue)); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndAddOrdered(volatile int *_q_value, int valueToAdd) +{ + return static_cast<int>(__e32_atomic_add_ord32(_q_value, valueToAdd)); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndAddRelaxed(volatile int *_q_value, int valueToAdd) +{ + return static_cast<int>(__e32_atomic_add_rlx32(_q_value, valueToAdd)); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndAddAcquire(volatile int *_q_value, int valueToAdd) +{ + return static_cast<int>(__e32_atomic_add_acq32(_q_value, valueToAdd)); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndAddRelease(volatile int *_q_value, int valueToAdd) +{ + return static_cast<int>(__e32_atomic_add_rel32(_q_value, valueToAdd)); +} + +Q_CORE_EXPORT +bool QBasicAtomicPointer_testAndSetOrdered(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + return static_cast<bool>(__e32_atomic_cas_ord_ptr(_q_value, + &expectedValue, + newValue)); +} + +Q_CORE_EXPORT +bool QBasicAtomicPointer_testAndSetRelaxed(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + return static_cast<bool>(__e32_atomic_cas_rlx_ptr(_q_value, + &expectedValue, + newValue)); +} + +Q_CORE_EXPORT +bool QBasicAtomicPointer_testAndSetAcquire(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + return static_cast<bool>(__e32_atomic_cas_acq_ptr(_q_value, + &expectedValue, + newValue)); +} + +Q_CORE_EXPORT +bool QBasicAtomicPointer_testAndSetRelease(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + return static_cast<bool>(__e32_atomic_cas_rel_ptr(_q_value, + &expectedValue, + newValue)); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndStoreOrdered(void * volatile *_q_value, void *newValue) +{ + return __e32_atomic_swp_ord_ptr(_q_value, newValue); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndStoreRelaxed(void * volatile *_q_value, void *newValue) +{ + return __e32_atomic_swp_rlx_ptr(_q_value, newValue); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndStoreAcquire(void * volatile *_q_value, void *newValue) +{ + return __e32_atomic_swp_acq_ptr(_q_value, newValue); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndStoreRelease(void * volatile *_q_value, void *newValue) +{ + return __e32_atomic_swp_rel_ptr(_q_value, newValue); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndAddOrdered(void * volatile *_q_value, qptrdiff valueToAdd) +{ + return __e32_atomic_add_ord_ptr(_q_value, valueToAdd); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndAddRelaxed(void * volatile *_q_value, qptrdiff valueToAdd) +{ + return __e32_atomic_add_rlx_ptr(_q_value, valueToAdd); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndAddAcquire(void * volatile *_q_value, qptrdiff valueToAdd) +{ + return __e32_atomic_add_acq_ptr(_q_value, valueToAdd); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndAddRelease(void * volatile *_q_value, qptrdiff valueToAdd) +{ + return __e32_atomic_add_rel_ptr(_q_value, valueToAdd); +} + +#else +//Symbian kernels 9.4 and earlier don't expose a suitable API + +//For ARMv6, the generic atomics are machine coded +#ifndef QT_HAVE_ARMV6 + +class QCriticalSection +{ +public: + QCriticalSection() { fastlock.CreateLocal(); } + ~QCriticalSection() { fastlock.Close(); } + void lock() { fastlock.Wait(); } + void unlock() { fastlock.Signal(); } + +private: + RFastLock fastlock; +}; + +QCriticalSection qAtomicCriticalSection; + +Q_CORE_EXPORT +bool QBasicAtomicInt_testAndSetOrdered(volatile int *_q_value, int expectedValue, int newValue) +{ + bool returnValue = false; + qAtomicCriticalSection.lock(); + if (*_q_value == expectedValue) { + *_q_value = newValue; + returnValue = true; + } + qAtomicCriticalSection.unlock(); + return returnValue; +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndStoreOrdered(volatile int *_q_value, int newValue) +{ + int returnValue; + qAtomicCriticalSection.lock(); + returnValue = *_q_value; + *_q_value = newValue; + qAtomicCriticalSection.unlock(); + return returnValue; +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndAddOrdered(volatile int *_q_value, int valueToAdd) +{ + int returnValue; + qAtomicCriticalSection.lock(); + returnValue = *_q_value; + *_q_value += valueToAdd; + qAtomicCriticalSection.unlock(); + return returnValue; +} + +Q_CORE_EXPORT +bool QBasicAtomicPointer_testAndSetOrdered(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + bool returnValue = false; + qAtomicCriticalSection.lock(); + if (*_q_value == expectedValue) { + *_q_value = newValue; + returnValue = true; + } + qAtomicCriticalSection.unlock(); + return returnValue; +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndStoreOrdered(void * volatile *_q_value, void *newValue) +{ + void *returnValue; + qAtomicCriticalSection.lock(); + returnValue = *_q_value; + *_q_value = newValue; + qAtomicCriticalSection.unlock(); + return returnValue; +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndAddOrdered(void * volatile *_q_value, qptrdiff valueToAdd) +{ + void *returnValue; + qAtomicCriticalSection.lock(); + returnValue = *_q_value; + *_q_value = reinterpret_cast<char *>(returnValue) + valueToAdd; + qAtomicCriticalSection.unlock(); + return returnValue; +} + +Q_CORE_EXPORT +bool QBasicAtomicInt_testAndSetRelaxed(volatile int *_q_value, int expectedValue, int newValue) +{ + return QBasicAtomicInt_testAndSetOrdered(_q_value, expectedValue, newValue); +} + +Q_CORE_EXPORT +bool QBasicAtomicInt_testAndSetAcquire(volatile int *_q_value, int expectedValue, int newValue) +{ + return QBasicAtomicInt_testAndSetOrdered(_q_value, expectedValue, newValue); +} + +Q_CORE_EXPORT +bool QBasicAtomicInt_testAndSetRelease(volatile int *_q_value, int expectedValue, int newValue) +{ + return QBasicAtomicInt_testAndSetOrdered(_q_value, expectedValue, newValue); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndStoreRelaxed(volatile int *_q_value, int newValue) +{ + return QBasicAtomicInt_fetchAndStoreOrdered(_q_value, newValue); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndStoreAcquire(volatile int *_q_value, int newValue) +{ + return QBasicAtomicInt_fetchAndStoreOrdered(_q_value, newValue); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndStoreRelease(volatile int *_q_value, int newValue) +{ + return QBasicAtomicInt_fetchAndStoreOrdered(_q_value, newValue); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndAddRelaxed(volatile int *_q_value, int valueToAdd) +{ + return QBasicAtomicInt_fetchAndAddOrdered(_q_value, valueToAdd); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndAddAcquire(volatile int *_q_value, int valueToAdd) +{ + return QBasicAtomicInt_fetchAndAddOrdered(_q_value, valueToAdd); +} + +Q_CORE_EXPORT +int QBasicAtomicInt_fetchAndAddRelease(volatile int *_q_value, int valueToAdd) +{ + return QBasicAtomicInt_fetchAndAddOrdered(_q_value, valueToAdd); +} + +Q_CORE_EXPORT +bool QBasicAtomicPointer_testAndSetRelaxed(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + return QBasicAtomicPointer_testAndSetOrdered(_q_value, expectedValue, newValue); +} + +Q_CORE_EXPORT +bool QBasicAtomicPointer_testAndSetAcquire(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + return QBasicAtomicPointer_testAndSetOrdered(_q_value, expectedValue, newValue); +} + +Q_CORE_EXPORT +bool QBasicAtomicPointer_testAndSetRelease(void * volatile *_q_value, + void *expectedValue, + void *newValue) +{ + return QBasicAtomicPointer_testAndSetOrdered(_q_value, expectedValue, newValue); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndStoreRelaxed(void * volatile *_q_value, void *newValue) +{ + return QBasicAtomicPointer_fetchAndStoreOrdered(_q_value, newValue); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndStoreAcquire(void * volatile *_q_value, void *newValue) +{ + return QBasicAtomicPointer_fetchAndStoreOrdered(_q_value, newValue); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndStoreRelease(void * volatile *_q_value, void *newValue) +{ + return QBasicAtomicPointer_fetchAndStoreOrdered(_q_value, newValue); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndAddRelaxed(void * volatile *_q_value, qptrdiff valueToAdd) +{ + return QBasicAtomicPointer_fetchAndAddOrdered(_q_value, valueToAdd); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndAddAcquire(void * volatile *_q_value, qptrdiff valueToAdd) +{ + return QBasicAtomicPointer_fetchAndAddOrdered(_q_value, valueToAdd); +} + +Q_CORE_EXPORT +void *QBasicAtomicPointer_fetchAndAddRelease(void * volatile *_q_value, qptrdiff valueToAdd) +{ + return QBasicAtomicPointer_fetchAndAddOrdered(_q_value, valueToAdd); +} + +#endif // QT_HAVE_ARMV6 +#endif // SYMBIAN_E32_ATOMIC_API + +QT_END_NAMESPACE |