ringbuffer-ipc

A lock-free, production-grade ring buffer implementation in C for inter-CPU/process communication using shared memory, featuring:

• Unity unit tests for robust coverage
• Real-world demo: Two separate processes (writer/reader) using POSIX shared memory (shm_open/mmap)
• Modern build system: All build outputs go to build/

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📁 Project Structure

• include/ # API header (ring_buffer.h)

• src/ # Ring buffer implementation

• test/ # Unit tests & Unity framework

• demo/ # Real-world demo: producer/consumer via shared memory

• build/ # All build outputs (created by Makefile)

• LICENSE # GPLv2 (Linux kernel style)

• Makefile # Build system

• README.md

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🚀 Quick Start

Build everything

make

### Run unit tests

./build/ring_buffer_test

Run the real shared-memory demo
Open two terminals:

Terminal 1 (producer):

./build/shm_writer

Terminal 2 (consumer):

./build/shm_reader