Can a stream itself initiate the re-execution of its code?

A thread cannot automatically restart its own code execution by itself. A thread executes a given function or block of code until completion. To rerun the code, you need to explicitly organize a loop or call the function again within the thread. For example, you can use a loop inside the thread function:

void* threadFunc(void* arg) {
    while (true) {
        // code that should be executed repeatedly
        // exit condition for the loop if necessary
    }
    return nullptr;
}

Without such an explicit construct, the thread will not restart itself.