Add Qt libs and headers

paho-mqtt3as-proxy/Qt/include/QtCore/qlockfile.h

@@ -0,0 +1,62 @@
+// Copyright (C) 2013 David Faure <faure+bluesystems@kde.org>
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QLOCKFILE_H
+#define QLOCKFILE_H
+
+#include <QtCore/qstring.h>
+#include <QtCore/qscopedpointer.h>
+
+#include <chrono>
+
+QT_BEGIN_NAMESPACE
+
+class QLockFilePrivate;
+
+class Q_CORE_EXPORT QLockFile
+{
+public:
+    QLockFile(const QString &fileName);
+    ~QLockFile();
+
+    QString fileName() const;
+
+    bool lock();
+    bool tryLock(int timeout = 0);
+    void unlock();
+
+    void setStaleLockTime(int);
+    int staleLockTime() const;
+
+    bool tryLock(std::chrono::milliseconds timeout) { return tryLock(int(timeout.count())); }
+
+    void setStaleLockTime(std::chrono::milliseconds value) { setStaleLockTime(int(value.count())); }
+
+    std::chrono::milliseconds staleLockTimeAsDuration() const
+    {
+        return std::chrono::milliseconds(staleLockTime());
+    }
+
+    bool isLocked() const;
+    bool getLockInfo(qint64 *pid, QString *hostname, QString *appname) const;
+    bool removeStaleLockFile();
+
+    enum LockError {
+        NoError = 0,
+        LockFailedError = 1,
+        PermissionError = 2,
+        UnknownError = 3
+    };
+    LockError error() const;
+
+protected:
+    QScopedPointer<QLockFilePrivate> d_ptr;
+
+private:
+    Q_DECLARE_PRIVATE(QLockFile)
+    Q_DISABLE_COPY(QLockFile)
+};
+
+QT_END_NAMESPACE
+
+#endif // QLOCKFILE_H