Concurrent programming allows the creation of more efficient programs. C++ didn't have built-in support for concurrency or multithreading for a long time. Now it has full support for concurrent programming, threads, thread synchronization objects, and other functionality that we will discuss in this chapter.
Before the language updated for thread support, programmers had to use third-party libraries. One of the most popular multithreading solutions was POSIX (Portable Operating System Interface) threads. C++ introduced thread support since C++11. It makes the language even more robust and applicable to wider areas of software development. Understanding threads is somewhat crucial for C++ programmers as they tend to squeeze every bit of the program to make it run even faster. Threads introduce us to a completely different way of making programs...