Embedded Programming with Modern C++ Cookbook

How to do it...

We will create an application that will define the Watchdog class and provide an example of its usage. Follow these steps:

1. In your working directory, that is, ~/test, create a subdirectory called watchdog.
2. Use your favorite text editor to create a file called watchdog.cpp in the watchdog subdirectory.
3. Put the required includes in the watchdog.cpp file:

#include <chrono>#include <iostream>#include <thread>#include <unistd.h>using namespace std::chrono_literals;

4. Next, we define the Watchdog class itself:

class Watchdog {  std::chrono::seconds seconds;  public:    Watchdog(std::chrono::seconds seconds):      seconds(seconds) {        feed();    }    ~Watchdog() {      alarm(0);    }    void feed() {      alarm(seconds.count());    }};

5. Add the main function, which ...