What are the differences between C++ threading libraries?

What are the differences between C++ threading libraries?

C++ offers several threading libraries, including the Standard Library, Boost, and Pthreads. The Standard Library is part of C++11 and later, providing a simple interface for threads, mutexes, and condition variables. Boost is more extensive and offers additional features, while Pthreads is a POSIX standard that provides low-level threading capabilities.

Which one should I use for a new project?

It depends on your project's requirements. If you need portability and ease of use, the C++ Standard Library is a great choice. For more advanced features, Boost might be better. If you're working on a system that requires fine-grained control over threads, Pthreads could be the way to go.

Can you give me an example of using the Standard Library for threading?

Sure! Here's a simple example:

#include <iostream>
#include <thread>

void hello() {
    std::cout << "Hello from thread!" << std::endl;
}

int main() {
    std::thread t(hello);
    t.join(); // Wait for the thread to finish
    return 0;
}

What are the performance differences between these libraries?

Performance can vary based on the specific use case and implementation. Generally, the Standard Library is optimized for most applications, while Boost may introduce some overhead due to its additional features. Pthreads can be very efficient but require more careful management of resources.