Copy qbasicatomic.h to qoldbasicatomic.h

Change-Id: I15df58f9dc29189419f8cbc0ce47bf11e9f17cf4
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 175 insertions, 0 deletions

diff --git a/src/corelib/thread/qoldbasicatomic.h b/src/corelib/thread/qoldbasicatomic.h
new file mode 100644
index 0000000000..2f952c9e0a
--- /dev/null
+++ b/src/corelib/thread/qoldbasicatomic.h
@@ -0,0 +1,175 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QBASICATOMIC_H
+#define QBASICATOMIC_H
+
+#include <QtCore/qglobal.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+class Q_CORE_EXPORT QBasicAtomicInt
+{
+public:
+#ifdef QT_ARCH_PARISC
+    int _q_lock[4];
+#endif
+#if defined(QT_ARCH_WINDOWS) || defined(QT_ARCH_WINDOWSCE)
+    union { // needed for Q_BASIC_ATOMIC_INITIALIZER
+        volatile long _q_value;
+    };
+#else
+    volatile int _q_value;
+#endif
+
+    // Atomic API, implemented in qatomic_XXX.h
+
+    int load() const { return _q_value; }
+    int loadAcquire() { return _q_value; }
+    void store(int newValue) { _q_value = newValue; }
+    void storeRelease(int newValue) { _q_value = newValue; }
+
+    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);
+};
+
+template <typename T>
+class QBasicAtomicPointer
+{
+public:
+#ifdef QT_ARCH_PARISC
+    int _q_lock[4];
+#endif
+#if defined(QT_ARCH_WINDOWS) || defined(QT_ARCH_WINDOWSCE)
+    union {
+        T * volatile _q_value;
+#  if !defined(Q_OS_WINCE) && !defined(__i386__) && !defined(_M_IX86)
+        qint64
+#  else
+        long
+#  endif
+        volatile _q_value_integral;
+    };
+#else
+    T * volatile _q_value;
+#endif
+
+    // Atomic API, implemented in qatomic_XXX.h
+
+    T *load() const { return _q_value; }
+    T *loadAcquire() { return _q_value; }
+    void store(T *newValue) { _q_value = newValue; }
+    void storeRelease(T *newValue) { _q_value = newValue; }
+
+    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);
+};
+
+#ifdef QT_ARCH_PARISC
+#  define Q_BASIC_ATOMIC_INITIALIZER(a) {{-1,-1,-1,-1},(a)}
+#elif defined(QT_ARCH_WINDOWS) || defined(QT_ARCH_WINDOWSCE)
+#  define Q_BASIC_ATOMIC_INITIALIZER(a) { {(a)} }
+#else
+#  define Q_BASIC_ATOMIC_INITIALIZER(a) { (a) }
+#endif
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#if defined(QT_MOC) || defined(QT_BUILD_QMAKE) || defined(QT_RCC) || defined(QT_UIC) || defined(QT_BOOTSTRAPPED)
+#  include <QtCore/qatomic_bootstrap.h>
+#else
+#  include <QtCore/qatomic_arch.h>
+#endif
+
+#endif // QBASIC_ATOMIC