Move QtConcurrent into its own module

Task-number: QTBUG-20892

Change-Id: I614500aafb6428915509983608bbb0ade4e4f016
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 154 insertions, 0 deletions

diff --git a/src/concurrent/qtconcurrentrunbase.h b/src/concurrent/qtconcurrentrunbase.h
new file mode 100644
index 0000000000..2105437ede
--- /dev/null
+++ b/src/concurrent/qtconcurrentrunbase.h
@@ -0,0 +1,154 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** 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 QTCONCURRENT_RUNBASE_H
+#define QTCONCURRENT_RUNBASE_H
+
+#include <QtCore/qglobal.h>
+
+#ifndef QT_NO_CONCURRENT
+
+#include <QtConcurrent/qfuture.h>
+#include <QtCore/qrunnable.h>
+#include <QtCore/qthreadpool.h>
+
+QT_BEGIN_HEADER
+QT_BEGIN_NAMESPACE
+
+
+#ifndef qdoc
+
+namespace QtConcurrent {
+
+template <typename T>
+struct SelectSpecialization
+{
+    template <class Normal, class Void>
+    struct Type { typedef Normal type; };
+};
+
+template <>
+struct SelectSpecialization<void>
+{
+    template <class Normal, class Void>
+    struct Type { typedef Void type; };
+};
+
+template <typename T>
+class RunFunctionTaskBase : public QFutureInterface<T> , public QRunnable
+{
+public:
+    QFuture<T> start()
+    {
+        this->setRunnable(this);
+        this->reportStarted();
+        QFuture<T> theFuture = this->future();
+        QThreadPool::globalInstance()->start(this, /*m_priority*/ 0);
+        return theFuture;
+    }
+
+    void run() {}
+    virtual void runFunctor() = 0;
+};
+
+template <typename T>
+class RunFunctionTask : public RunFunctionTaskBase<T>
+{
+public:
+    void run()
+    {
+        if (this->isCanceled()) {
+            this->reportFinished();
+            return;
+        }
+#ifndef QT_NO_EXCEPTIONS
+        try {
+#endif
+            this->runFunctor();
+#ifndef QT_NO_EXCEPTIONS
+        } catch (QtConcurrent::Exception &e) {
+            QFutureInterface<T>::reportException(e);
+        } catch (...) {
+            QFutureInterface<T>::reportException(QtConcurrent::UnhandledException());
+        }
+#endif
+
+        this->reportResult(result);
+        this->reportFinished();
+    }
+    T result;
+};
+
+template <>
+class RunFunctionTask<void> : public RunFunctionTaskBase<void>
+{
+public:
+    void run()
+    {
+        if (this->isCanceled()) {
+            this->reportFinished();
+            return;
+        }
+#ifndef QT_NO_EXCEPTIONS
+        try {
+#endif
+            this->runFunctor();
+#ifndef QT_NO_EXCEPTIONS
+        } catch (QtConcurrent::Exception &e) {
+            QFutureInterface<void>::reportException(e);
+        } catch (...) {
+            QFutureInterface<void>::reportException(QtConcurrent::UnhandledException());
+        }
+#endif
+        this->reportFinished();
+    }
+};
+
+} //namespace QtConcurrent
+
+#endif //qdoc
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#endif // QT_NO_CONCURRENT
+
+#endif