Enum TryPopResult 

pub(crate) enum TryPopResult<T> {
    Ok(T),
    Empty,
    Closed,
    Busy,
}

Return value of Rx::try_pop.

Variants

Ok(T)

Successfully popped a value.

Empty

The channel is empty.

Note that list.rs only tracks the close state set by senders. If the channel is closed by Rx::close(), then TryPopResult::Empty is still returned, and the close state needs to be handled by chan.rs.

Closed

The channel is empty and closed.

Returned when the send half is closed (all senders dropped).

Busy

The channel is not empty, but the first value is being written.