What is a ring buffer in C?
Circular buffers (also known as ring buffers) are fixed-size buffers that work as if the memory is contiguous & circular in nature. As memory is generated and consumed, data does not need to be reshuffled – rather, the head/tail pointers are adjusted. When data is added, the head pointer advances.
What does a ring buffer do?
Ring Buffer (or Circular Buffer) is a bounded circular data structure that is used for buffering data between two or more threads.
What is ring buffer in UART?
It is called a ring buffer because data can wrap around back to the beginning, provided there is space. Really it is just implemented as an array but the beginning of the queue does not have to start at the first element of the array, and the end does not necessarily end at the last element in the array.