Multithreading in C++
Illustrating the fundamentals of multithreading in C++.
What is multithreaded programming in C++?
Multithreaded programming in C++ allows multiple threads to execute concurrently, which improves the performance and responsiveness of applications. It exploits the power of modern multi-core processors, enabling tasks to run in parallel and enhancing efficiency. In C++, threads are created using the <thread> library, and there are several ways to launch them, each with its own advantages and use cases.
Multithreading in C++ consists of threads, synchronization primitives for shared data, thread-local data, and tasks.
Threads
A std::thread represents an independent unit of program execution. The executable unit, which is started immediately, receives its work package as a callable unit. A callable unit can be a named function, a function object, or a lambda function.
The creator of a thread is responsible for its lifecycle. The executable unit of the new thread ends with the end of the callable. Either the creator waits until the created thread t is done (t.join()), or the creator detaches itself from the created thread: (t.detach()). A thread t is joinable if no operation t.join() or t.detach() was performed on it. A joinable thread calls std::terminate in its destructor and the program terminates.
A thread that is detached from its creator is typically called a daemon thread because it runs in ...