> Loops where you join all the threads that are supposedly finished are usually troublesome. If somebody gets stuck, the joiner stalls. That makes sense if the

> Loops where you join all the threads that are supposedly finished are usually troublesome. If somebody gets stuck, the joiner stalls. That makes sense if the main thread is actually doing any useful work, but when its only job is to spawn threads and wait for them to finish before exiting, then it's a pretty common idiom.