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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

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