What is Mutex in C++ (Multithreading for Beginners)

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In this programming tutorial you will learn about thread safety, multithreading and concurrency. When working with multithreading in programming, one of the crucial moments is knowing how to secure certain parts of the code from being accessed by multiple threads simultaneously, which can lead to serious problems. For that purpose, we use Mutex. In this video, you will learn all about Mutex and how to use it in programming. Considering that Mutex is a very important concept when it comes to multithreading, this video will be valuable for everyone eager to learn more about multithreading. This video contains real world examples and it is easy-to-understand. I will also show you multiple ways of implementing Mutex in C++, and we will discuss the differences as well as the pros and cons of different approaches.

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CONTENTS:
00:00 - What you will learn in this video
01:38 - More about Mutex
02:03 - Real-world example of Mutex
02:40 - Creating a problematic multithreading scenario
06:27 - How to solve a problem with Mutex
07:13 - Implementing Mutex with unique_lock
08:25 - Implementing Mutex with lock_guard
09:08 - Difference between lock_guard and unique_lock
11:18 - Where to learn more

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📚 Learn programming with these Free E-Books ⬇
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This is a step-by-step course designed to take you from beginner to expert in no time!
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Code:

#include <iostream>
#include<thread>
#include<mutex>
using namespace std;

mutex carMutex;

void driveCar(string driverName) {
//lock_guard<mutex> carLock(carMutex);

unique_lock<mutex> carLock(carMutex);
cout << driverName << " is driving" << endl;

cout << driverName << " is done driving" << endl;
carLock.unlock();
}

int main()
{
thread t1(driveCar, "Saldina");
thread t2(driveCar, "Elon");

t1.join();
t2.join();

cin.get();
}

CodeBeauty

I think it will be another pill of knowledge to improve our study about C++. Thanks Saldina for all!

carmelostagno

great explanation, very simplified, thanks

amelccc

you made yet another complex topic very easy to understand, thank you

lukvkru

I watch a lot of Saldina's older C++ coding videos and she used to wear a Bat-Man t-shirt quite often. I wonder whatever became of that Bat-Man t-shirt🤔🤨?

christopherrice

I've been watching your videos for a while now, and I'm pleasantly surprised that you don't include any ads on your channel. It really highlights your dedication to education. We're eagerly anticipating your upcoming programming course!

hsngraphics

Your method of instruction is really good. First explaining the concept then directly followed by an example implementing the concept. Thanks for your videos.

woodperfekt

Always the best youtube C++ performer! Thank Saldina!

lsnlst

I would really like to see a C# series, it would be really helpful with your teaching style!!

fixnemlacika

I watched your video about multithreading, and I was hoping that you will publish more videos about that topic. Thanks Saldina ❤

marym

awesome video i was scared of threads up until i came to your channel. You explain everything so well and its so easy to follow thank you !!!

tav

Amazing and simple to understand thankyou!

joshualloyd

I tried searching for a particular string in a file but all to no avail.
Please any help

OgunsolaMercy-duif

im not a beginner but i was once & honestly its so much easier to learn programming when u actually understand whats happening.

for example, u shd state that the namespace this_thread is defined in the header <thread> and so is chrono.

sleep_for can then be considered a function and not a static method of the class this_thread.

chrono::seconds can also be considered a function although im assuming its actually an explicit constructor or a basic constructor that takes in an int & returns and instance of seconds.

only thing i didnt know was the stuff about mutex, so thanks.

its better to specify what exactly is happening as apposed to simply expecting that people just copy ur code.

anon-fzbo