refs #502, move the thread checks into own class in blackmisc

* we want to clean up the freefunctions anyway
* allows to use check in blackmisc namespace

src/blackmisc/threadutilities.cpp

@@ -0,0 +1,37 @@
+/* Copyright (C) 2015
+ * swift project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+#include "threadutilities.h"
+#include <QThread>
+#include <QCoreApplication>
+
+namespace BlackMisc
+{
+    bool CThreadUtils::isCurrentThreadObjectThread(QObject *toBeTested)
+    {
+        Q_ASSERT_X(toBeTested, Q_FUNC_INFO, "missing QObject");
+        if (!toBeTested) { return false; }
+        if (!toBeTested->thread()) { return false; }
+        return (QThread::currentThread() == toBeTested->thread());
+    }
+
+    bool CThreadUtils::isApplicationThreadObjectThread(QObject *toBeTested)
+    {
+        Q_ASSERT_X(toBeTested, Q_FUNC_INFO, "missing QObject");
+        if (!toBeTested) { return false; }
+        if (!toBeTested->thread()) { return false; }
+        return (QCoreApplication::instance()->thread() == toBeTested->thread());
+    }
+
+    bool CThreadUtils::isCurrentThreadApplicationThread()
+    {
+        return (QCoreApplication::instance()->thread() == QThread::currentThread());
+    }
+
+} // ns

src/blackmisc/threadutilities.h

@@ -0,0 +1,44 @@
+/* Copyright (C) 2015
+ * swift project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of swift project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+//! \file
+
+#ifndef BLACKMISC_CTHREADUTILITIES_H
+#define BLACKMISC_CTHREADUTILITIES_H
+
+#include "blackmiscexport.h"
+#include <QObject>
+#include <QDebug>
+
+namespace BlackMisc
+{
+    /*!
+     * Utility class for threaded operations
+     */
+    class BLACKMISC_EXPORT CThreadUtils
+    {
+    public:
+        //! No constructor
+        CThreadUtils() = delete;
+
+        //! Is the current thread the QObject's thread?
+        //! \remarks can be used as ASSERT check for threaded objects
+        static bool isCurrentThreadObjectThread(QObject *toBeTested);
+
+        //! Is the application thread the QObject's thread?
+        //! \remarks can be used as ASSERT check for threaded objects
+        static bool isApplicationThreadObjectThread(QObject *toBeTested);
+
+        //! Is the current thread the Application thread?
+        //! \remarks can be used as ASSERT check for threaded objects
+        static bool isCurrentThreadApplicationThread();
+    };
+} // ns
+
+#endif // guard