Gain insights into using Modern C++ for embedded programming. Learn about safety-critical systems, optimize performance, manage limited resources, and handle parallel execution effectively.

waleed1.tar.gz

C++11

C++ 17

Embedded Programming with Modern C++  is highly valuable for each professional programmer.

In the past, embedded and system programming have had their pitfalls, but modern C++ has been designed to be a better language for this type of development, addressing the previous pitfalls/requirements explicitly. What are these requirements? Embedded systems deal with safety-critical systems, meaning they must guarantee high performance combined with limited resources, while also working in parallel.

The scope of this course goes beyond just embedded programming. Developers who write servers, games, or trading systems may especially benefit from this course because they also have to deal with safety-critical systems, high performance, reduced resources, and parallel execution in their jobs.

To get the most out of the course, you only need a basic understanding of C++. Building off this understanding, this course goes over all the essentials of embedded programming with Modern C++.

Let's get started!

Embedded Programming with Modern C++

# Example 1

The short example demonstrates the application of `std::call_once` and the `std::once_flag`. Both are declared in the header `<mutex>`. 

// safeInitializationCallOnce.cpp

#include <iostream>
#include <thread>
#include <mutex>
 
std::once_flag onceFlag;
 
void do_once(){
  std::call_once(onceFlag, [](){ std::cout << "Only once." << std::endl; });
}
 
int main(){
  
  std::cout << std::endl;
  
  std::thread t1(do_once);
  std::thread t2(do_once);
  std::thread t3(do_once);
  std::thread t4(do_once);
 
  t1.join();
  t2.join();
  t3.join();
  t4.join();
  
  std::cout << std::endl;
}

## Explanation

* The program starts four threads (lines 17 - 20). Each of them invokes `do_once`. The string “only once” is, as a result, displayed only once.


* The famous singleton pattern guarantees that only one instance of an object will be created. This is a challenging task in multithreading environments. Due to `std::call_once` and `std::once_flag`, the job is made much easier. 


Let’s discuss the examples of thread-safe initialization of data in this lesson.


Introduction

Safety-Critical Systems

High Performance

Reduced Resources

Several Tasks Simultaneously

Conclusion

- Examples

Example 1

Explanation