Constructor
Pops an element from the queue and returns a slice to that element. The value of the element must then be copied from the sliced location before the next push() or pop() is called.
Pushes an element into the queue and returns a slice to that element. The value of the element must then be copied to the sliced location before the next push_() or pop_() is called.
Finds out whether another item will fit
Element size in bytes
Maximum number of elements in queue
Ring queue base class.