Multithreading in C++

What is multithreading?

There are a few definitions, depending on the point of view. From the CPU’s perspective, a multi-core processor that can execute multiple threads of instructions concurrently is real multithreading. From an application’s perspective, using multiple threads is multithreading. From a developer’s perspective, more focus might be on thread safety and various synchronization mechanisms, which are not multithreading itself, but its implications.

In this section, we will learn how to use Lua with C++’s native multithreading support. Each C++ thread will have its own Lua state. Because the Lua library does not keep any state and Lua states are not shared among different threads, this is thread-safe.

How does C++ support multithreading?

Since C++11, the standard library supports multithreading with std::thread. Each std::thread instance represents a thread of execution. The most important thing to provide...