How to Join a Thread in C++?

How to Join a Thread in C++?

Last Updated : 20 Mar, 2024

In C++, a thread is a basic element of multithreading that represents the smallest sequence of instructions that can be executed independently by the CPU. In this article, we will discuss how to join a thread in C++.

How to Join a Thread in C++?

Joining a thread is a means to wait for the thread to complete its execution before moving to the next part of the program.

We can join the thread using the std::thread::join() function. It is a member function that makes sure that the execution of the thread is complete before moving on to the next statement after the join() function call.

C++ Program to Join a Thread

C++

// C++ Program to illustrate how to join a thread
#include <iostream>
#include <thread>
using namespace std;
// Define a function to be executed by the thread
void myFunction()
{
    cout << "Thread started" << endl;
    // Do some work
    cout << "Thread finished" << endl;
}

int main()
{
    // Print a message indicating the start of the main
    // thread
    cout << "Main thread started" << endl;

    // Create a new thread and associate it with the
    // function myFunction
    thread myThread(myFunction);

    // Wait for the created thread (myThread) to finish
    // execution
    myThread.join();
    cout << "Main thread finished" << endl;

    return 0;
}

Output:

Main thread started
Thread started
Thread finished
Main thread finished

How to Join a Thread in C++?

R

rohitdubey214

Improve

Article Tags :

Practice Tags :

CPP

Similar Reads

How to Create a Thread in C++?

A thread is a basic element of multithreading which represents the smallest sequence of instructions that can be executed independently by the CPU. In this article, we will discuss how to create a thread in C++. How to Create a Thread in C++?In C++, the std::thread is a class template that is used t

How to Detach a Thread in C++?

In C++, a thread is a basic element of multithreading that represents the smallest sequence of instructions that can be executed independently by the CPU. In this article, we will discuss how to detach a thread in C++. What does Detaching a Thread mean?Detaching a thread means allowing the thread to

std::thread::join() in C++

The std::thread::join() is a standard library function in C++ that is used to block the current thread until the thread identified by *this finishes its execution. It means that it will hold the current thread at the point of its call until the thread associated with that join() function finishes it

Thread joinable() function in C++

Thread::joinable is an in-built function in C++ std::thread. It is an observer function which means it observes a state and then returns the corresponding output and checks whether the thread object is joinable or not. A thread object is said to be joinable if it identifies/represent an active threa

How to Add Timed Delay in C++?

In C++, there is the functionality of delay or inactive state which allows the execution to be delayed for a specific period of time. This is often referred to as a â€œtimed delayâ€. In this article, we will learn how to add timed delay in C++. Timed Delay in C++To add a timed delay in C++, we can use