Over the years there have been a few CPUs designed to directly run a high-level programming language, the most common ...

Each thread will have its own version of the variable. On each thread, the variable is initially initialized to its default value (0 in the example above). When the thread is destroyed, the variable's ...

Because these thread_local vectors are in translation scope, they are instantiated in every single thread in the process. Some of those threads are out of the application's control by definition, e.g.