* @brief Constructor. Checks and fires up LocalServer or closes the program * if another instance already exists * @param argc * @param argv * @pa

* Cleans up the shared memory block and exits with a failure. * This function halts program execution. */

* Returns the username the current instance is running as. * @return Returns the username the current instance is running as. */

* Allows you to identify an instance by returning unique consecutive instance * ids. It is reset when the first (primary) instance of your app starts

* Checks if the current application instance is primary. * @return Returns true if the instance is primary, false otherwise. */

* Checks if the current application instance is secondary. * @return Returns true if the instance is secondary, false otherwise. */

* Returns the OS PID (Process Identifier) of the process running the primary * instance. Especially useful when SingleApplication is coupled with OS.

* Returns the username the primary instance is running as. * @return Returns the username the primary instance is running as. */