vmcircbuf

This is a simple crate to create a circular buffer that magically wraps around without any copying. This is achieved by mapping the same physical memory page twice into the virtual address space.

let mut buffer = Buffer::new(0, 0).unwrap();
let size = buffer.size();

for (i, a) in buffer.slice_mut(0, size).iter_mut().enumerate() {
    *a = i as u8;
}
for (i, a) in buffer.slice(10, size).iter().enumerate() {
    assert_eq!(*a, (i + 10) as u8);
}