Prototype of Async library

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diff --git a/async/src/future.h b/async/src/future.h
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+/*
+ * Copyright 2014  Daniel Vrátil <dvratil@redhat.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License or (at your option) version 3 or any later version
+ * accepted by the membership of KDE e.V. (or its successor approved
+ * by the membership of KDE e.V.), which shall act as a proxy
+ * defined in Section 14 of version 3 of the license.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef FUTURE_H
+#define FUTURE_H
+
+class QEventLoop;
+
+namespace Async {
+
+class FutureBase
+{
+public:
+    FutureBase();
+    FutureBase(const FutureBase &other);
+    void setFinished();
+    bool isFinished() const;
+    void waitForFinished();
+
+protected:
+    bool mFinished;
+    QEventLoop *mWaitLoop;
+};
+
+template<typename T>
+class Future : public FutureBase
+{
+public:
+    Future()
+        : FutureBase()
+    {}
+
+    Future(const Future<T> &other)
+        : FutureBase(other)
+        , mValue(other.mValue)
+    {}
+
+    Future(const T &val)
+        : FutureBase()
+        , mValue(val)
+    {}
+
+    void setValue(const T &val)
+    {
+        mValue = val;
+    }
+
+    T value() const
+    {
+        return mValue;
+    }
+
+private:
+    T mValue;
+};
+
+template<>
+class Future<void> : public FutureBase
+{
+public:
+    Future()
+        : FutureBase()
+    {}
+
+    Future(const Future<void> &other)
+        : FutureBase(other)
+    {}
+};
+
+} // namespace Async
+
+#endif // FUTURE_H