Ringbuffer

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. This requires the alloc feature.
GrowableAllocRingBuffer	Ringbuffer allocated on the heap at runtime. This ringbuffer can grow in size, and is implemented as an alloc::VecDeque internally. This requires the alloc feature.
ConstGenericRingBuffer	Ringbuffer which uses const generics to allocate on the stack.

All of these ringbuffers also implement the RingBuffer trait for their shared API surface.

MSRV: Rust 1.59

Usage

use ringbuffer::{AllocRingBuffer, RingBuffer};

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.back(), 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]);

Features

name	default	description
alloc	✓	Disable this feature to remove the dependency on alloc. Disabling this feature makes ringbuffer no_std.

License

Licensed under MIT License