Prototype of Async library

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diff --git a/async/src/async.cpp b/async/src/async.cpp
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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/>.
+ *
+ */
+
+#include "async.h"
+
+#include <QCoreApplication>
+#include <QDebug>
+#include <QEventLoop>
+
+
+using namespace Async;
+
+FutureBase::FutureBase()
+    : mFinished(false)
+    , mWaitLoop(nullptr)
+{
+
+}
+
+FutureBase::FutureBase(const Async::FutureBase &other)
+    : mFinished(other.mFinished)
+    , mWaitLoop(other.mWaitLoop)
+{
+}
+
+void FutureBase::setFinished()
+{
+    mFinished = true;
+    if (mWaitLoop && mWaitLoop->isRunning()) {
+        mWaitLoop->quit();
+    }
+}
+
+bool FutureBase::isFinished() const
+{
+    return mFinished;
+}
+
+void FutureBase::waitForFinished()
+{
+    if (mFinished) {
+        return;
+    }
+
+    mWaitLoop = new QEventLoop;
+    mWaitLoop->exec(QEventLoop::ExcludeUserInputEvents);
+    delete mWaitLoop;
+    mWaitLoop = 0;
+}