Learn Mutex in C++ with Examples and Tutorials

  1. What is a Mutex?
  2. How to use a Mutex in C++?
  3. Conclusion

What is a Mutex?

A Mutex, short for mutual exclusion, is a programming concept that is used to prevent two or more threads from accessing shared resources simultaneously. In C++, a Mutex is implemented as a synchronization primitive that provides exclusive access to a shared resource.

How to use a Mutex in C++?

In order to use a Mutex in C++, you need to include the <mutex> header file. The following code snippet demonstrates how to use a Mutex to protect a shared variable:

#include <iostream>
#include <mutex>

std::mutex mutex;

int shared_variable = 0;

void increment_shared_variable()

int main()
    std::thread thread1(increment_shared_variable);
    std::thread thread2(increment_shared_variable);


    std::cout << "Shared variable value: " << shared_variable << std::endl;

    return 0;

In this example, the mutex.lock() call ensures that only one thread can access the shared variable at a time. Once a thread has finished modifying the shared variable, the mutex.unlock() call releases the Mutex so that other threads can access the shared variable.


In conclusion, a Mutex is an important synchronization primitive that is used to prevent race conditions in multithreaded C++ programs. By using a Mutex to protect shared resources, you can ensure that your program behaves correctly and avoids unexpected behavior. With the help of tutorials and examples, learning Mutex in C++ can be a straightforward process that will greatly improve the quality of your code.

Click to rate this post!
[Total: 0 Average: 0]

Related posts

Leave a Reply

Your email address will not be published. Required fields are marked *

Go up

Below we inform you of the use we make of the data we collect while browsing our pages. You can change your preferences at any time by accessing the link to the Privacy Area that you will find at the bottom of our main page. More Information