static STYLE_THREAD_JOIN_HANDLES: Mutex<Vec<JoinHandle<()>>>Expand description
JoinHandles for spawned style threads. These will be joined during StyleThreadPool::shutdown() after exiting the thread pool.
This would be quite inefficient if rayon destroyed and re-created threads regularly during threadpool operation in response to demand, however rayon actually never destroys its threads until the entire thread pool is shut-down, so the size of this list is bounded.