Embedded Programming with Modern C++ Cookbook

How to do it...

We are going to create an application that can monitor USB devices and wait until a specific device appears:

1. In your working ~/test directory create a subdirectory called udev.
2. Use your favorite text editor to create a udev.cpp file in the udev subdirectory.
3. Put the essential includes and the namespace definition into the udev.cpp file:

#include <iostream>#include <functional>#include <libudev.h>#include <poll.h>namespace usb {

4. Now, let's define the Device class:

class Device {  struct udev_device *dev{0};  public:    Device(struct udev_device* dev) : dev(dev) {    }    Device(const Device& other) : dev(other.dev) {      udev_device_ref(dev);    }    ~Device() {        udev_device_unref(dev);    }    std::string action() const {  return udev_device_get_action(dev); ...