The ringbuffer crate provides safe fixed size circular buffers (ringbuffers) in rust.
Implementations for three kinds of ringbuffers, with a mostly similar API are provided:
| type | description |
| --- | --- |
| AllocRingBuffer | Ringbuffer allocated on the heap at runtime. This ringbuffer is still fixed size and requires alloc. |
| GenericRingBuffer | Ringbuffer allocated on the stack. This is done using the typenum crate to provide a const-generic like interface without needing nightly |
| ConstGenericRingBuffer | Ringbuffer which uses const generics to allocate on the stack. This type is feature-gated behind const_generics and only works in nightly rust.|
All of these ringbuffers also implement the RingBuffer trait for their shared API surface.
```rust use ringbuffer::{AllocRingBuffer, RingBuffer}; fn main() { let mut buffer = AllocRingBuffer::with_capacity(2);
// First entry of the buffer is now 5.
buffer.push(5);
// The last item we pushed is 5
assert_eq!(buffer.get(-1), Some(&5));
// Second entry is now 42.
buffer.push(42);
assert_eq!(buffer.peek(), Some(&5));
assert!(buffer.is_full());
// Because capacity is reached the next push will be the first item of the buffer.
buffer.push(1);
assert_eq!(buffer.to_vec(), vec![42, 1]);
}
```
| name | default | description | | --- | --- | --- | | alloc | ✓ | Disable this feature to remove the dependency on alloc. Useful for kernels. | | constgenerics | ✗ | Enables the ConstGenericRingBuffer. This requires nightly. | | genericarray | ✓ | Disable this feature to remove the generic_array and typenum dependencies (and disables GenericRingBuffer). |
Licensed under GNU Lesser General Public License v3.0