Function scope

src/thread_pool.rs:2431–2439

Creates a new scope for spawning non-static work. When executed on a thread that is currently registered as a worker (i.e. the closure inside [`Membership::activate`], [`ThreadPool::with_worker`], or similar) this is able to look up that registration and find the worker and thread-pool implicitly. If not called within a thread pool, this uses the [`DEFAULT_POOL`]. If you have a reference to a [

(f: F)

    ///
    /// # Panics
    ///
    /// Panics in the operation are passed to the pool's panic handler, as
    /// described in [`Worker::spawn`].
    #[inline(always)]
    pub fn spawn_broadcast<F>(&self, f: F)
    where
        F: for<'w> Fn(Broadcast<'w>) + Send + Sync + 'static,
    {
        // Prevent workers from leaving the pool, and read the membership bitset
        // once it's frozen.
        let members = self.thread_pool.freeze_membership();
        let participants = members.count_ones() as usize;