Atomic operations support for INTEGRITY RTOS

Added atomic operations using INTEGRITY native APIs

Merge-request: 1101
Reviewed-by: Harald Fernengel <harald.fernengel@nokia.com>

4 files changed, 292 insertions, 1 deletions

diff --git a/src/corelib/arch/arch.pri b/src/corelib/arch/arch.pri
index 971069f..cd23e5e 100644
--- a/src/corelib/arch/arch.pri
+++ b/src/corelib/arch/arch.pri
@@ -12,6 +12,8 @@ symbian:HEADERS +=  arch/qatomic_symbian.h \
 
 vxworks:HEADERS += arch/qatomic_vxworks.h
 
+integrity:HEADERS += arch/qatomic_integrity.h
+
 !wince*:!win32:!mac:!symbian:HEADERS += arch/qatomic_alpha.h \
                        arch/qatomic_avr32.h \
                        arch/qatomic_ia64.h \
diff --git a/src/corelib/arch/integrity/arch.pri b/src/corelib/arch/integrity/arch.pri
new file mode 100644
index 0000000..2c4196e
--- /dev/null
+++ b/src/corelib/arch/integrity/arch.pri
@@ -0,0 +1,3 @@
+#
+# INTEGRITY RTOS architecture
+#
diff --git a/src/corelib/arch/qatomic_arch.h b/src/corelib/arch/qatomic_arch.h
index f32aec7..3da833a 100644
--- a/src/corelib/arch/qatomic_arch.h
+++ b/src/corelib/arch/qatomic_arch.h
@@ -46,7 +46,9 @@ QT_BEGIN_HEADER
 
 #include "QtCore/qglobal.h"
 
-#if defined(QT_ARCH_VXWORKS)
+#if defined(QT_ARCH_INTEGRITY)
+#  include "QtCore/qatomic_integrity.h"
+#elif defined(QT_ARCH_VXWORKS)
 #  include "QtCore/qatomic_vxworks.h"
 #elif defined(QT_ARCH_ALPHA)
 #  include "QtCore/qatomic_alpha.h"
diff --git a/src/corelib/arch/qatomic_integrity.h b/src/corelib/arch/qatomic_integrity.h
new file mode 100644
index 0000000..ca866ed
--- /dev/null
+++ b/src/corelib/arch/qatomic_integrity.h
@@ -0,0 +1,284 @@
+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License versions 2.0 or 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 GNU General Public Licensing requirements will be met:
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
+** exception, Nokia gives you certain additional rights. These rights
+** are described in the Nokia Qt GPL Exception version 1.3, included in
+** the file GPL_EXCEPTION.txt in this package.
+**
+** Qt for Windows(R) Licensees
+** As a special exception, Nokia, as the sole copyright holder for Qt
+** Designer, grants users of the Qt/Eclipse Integration plug-in the
+** right for the Qt/Eclipse Integration to link to functionality
+** provided by Qt Designer and its related libraries.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+**
+****************************************************************************/
+
+#ifndef QATOMIC_INTEGRITY_H
+#define QATOMIC_INTEGRITY_H
+
+#include <INTEGRITY.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+#define qt_i2addr(a) reinterpret_cast<Address *>(const_cast<int *>(a))
+#define qt_p2addr(a) reinterpret_cast<Address *>(const_cast<void *>(a))
+#define qt_addr(a) reinterpret_cast<Address>(a)
+
+
+#define Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE
+
+inline bool QBasicAtomicInt::isReferenceCountingNative()
+{ return false; }
+inline bool QBasicAtomicInt::isReferenceCountingWaitFree()
+{ return false; }
+
+#define Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE
+
+inline bool QBasicAtomicInt::isTestAndSetNative()
+{ return true; }
+inline bool QBasicAtomicInt::isTestAndSetWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE
+
+inline bool QBasicAtomicInt::isFetchAndStoreNative()
+{ return true; }
+inline bool QBasicAtomicInt::isFetchAndStoreWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE
+
+inline bool QBasicAtomicInt::isFetchAndAddNative()
+{ return true; }
+inline bool QBasicAtomicInt::isFetchAndAddWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_POINTER_TEST_AND_SET_IS_NOT_NATIVE
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetNative()
+{ return true; }
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isTestAndSetWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_POINTER_FETCH_AND_STORE_IS_NOT_NATIVE
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreNative()
+{ return true; }
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndStoreWaitFree()
+{ return true; }
+
+#define Q_ATOMIC_POINTER_FETCH_AND_ADD_IS_NOT_NATIVE
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddNative()
+{ return true; }
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::isFetchAndAddWaitFree()
+{ return true; }
+
+// Reference counting
+
+inline bool QBasicAtomicInt::ref()
+{
+    int oldval;
+    AtomicModify(qt_i2addr(&_q_value), qt_i2addr(&oldval), 0, 1);
+    return _q_value != -1;
+}
+
+inline bool QBasicAtomicInt::deref()
+{
+    int oldval;
+    AtomicModify(qt_i2addr(&_q_value), qt_i2addr(&oldval), 0, -1U);
+    return _q_value != 0;
+}
+
+// Test and set for integers
+
+inline bool QBasicAtomicInt::testAndSetOrdered(int expectedValue, int newValue)
+{
+    return TestAndSet(qt_i2addr(&_q_value), expectedValue, newValue) == Success;
+}
+
+inline bool QBasicAtomicInt::testAndSetRelaxed(int expectedValue, int newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+inline bool QBasicAtomicInt::testAndSetAcquire(int expectedValue, int newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+inline bool QBasicAtomicInt::testAndSetRelease(int expectedValue, int newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+// Fetch and store for integers
+
+inline int QBasicAtomicInt::fetchAndStoreOrdered(int newValue)
+{
+    int old_val;
+    do {
+        old_val = _q_value;
+    } while (TestAndSet(qt_i2addr(&_q_value), old_val, newValue) != Success);
+    return old_val;
+}
+
+inline int QBasicAtomicInt::fetchAndStoreRelaxed(int newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+inline int QBasicAtomicInt::fetchAndStoreAcquire(int newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+inline int QBasicAtomicInt::fetchAndStoreRelease(int newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+// Fetch and add for integers
+
+inline int QBasicAtomicInt::fetchAndAddOrdered(int valueToAdd)
+{
+    int old_val;
+    do {
+        old_val = _q_value;
+    } while (TestAndSet(qt_i2addr(&_q_value), old_val, old_val + valueToAdd) != Success);
+    return old_val;
+}
+
+inline int QBasicAtomicInt::fetchAndAddRelaxed(int valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+inline int QBasicAtomicInt::fetchAndAddAcquire(int valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+inline int QBasicAtomicInt::fetchAndAddRelease(int valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+// Test and set for pointers
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetOrdered(T *expectedValue, T *newValue)
+{
+    return TestAndSet((Address*)&_q_value, qt_addr(expectedValue), qt_addr(newValue)) == Success;
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelaxed(T *expectedValue, T *newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetAcquire(T *expectedValue, T *newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE bool QBasicAtomicPointer<T>::testAndSetRelease(T *expectedValue, T *newValue)
+{
+    return testAndSetOrdered(expectedValue, newValue);
+}
+
+// Fetch and store for pointers
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreOrdered(T *newValue)
+{
+    Address old_val;
+    do {
+        old_val = *reinterpret_cast<Address *>(const_cast<T *>(newValue));
+    } while (TestAndSet(reinterpret_cast<Address *>(const_cast<T **>(&_q_value)), old_val, qt_addr(newValue)) != Success);
+    return reinterpret_cast<T *>(old_val);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelaxed(T *newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreRelease(T *newValue)
+{
+    return fetchAndStoreOrdered(newValue);
+}
+
+// Fetch and add for pointers
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddOrdered(qptrdiff valueToAdd)
+{
+    AtomicModify(qt_p2addr(&_q_value), qt_addr(_q_value), qt_addr(_q_value) + valueToAdd * sizeof(T));
+    return _q_value;
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelaxed(qptrdiff valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddAcquire(qptrdiff valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+template <typename T>
+Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndAddRelease(qptrdiff valueToAdd)
+{
+    return fetchAndAddOrdered(valueToAdd);
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QATOMIC_INTEGRITY_H
+