What is mutex management in C++?

What is mutex management in C++?

Mutex management in C++ involves using mutexes to control access to shared resources in multithreaded applications.

Why do I need to use mutexes in my C++ programs?

You need mutexes to prevent data races and ensure thread safety when multiple threads access shared data.

Can you show me a simple example of using a mutex in C++?

Sure! Here's a basic example:

#include <iostream>
#include <thread>
#include <mutex>

std::mutex mtx;
int shared_data = 0;

void increment() {
    mtx.lock();
    ++shared_data;
    mtx.unlock();
}

int main() {
    std::thread t1(increment);
    std::thread t2(increment);
    t1.join();
    t2.join();
    std::cout << "Shared data: " << shared_data << std::endl;
}

This code safely increments a shared variable using a mutex.

What happens if I forget to unlock the mutex?

If you forget to unlock the mutex, it can lead to deadlocks, where other threads are unable to access the locked resource, causing your program to hang.