MaJerle/lwrb

Health v2 · maintenance only

Adoption not part of the score

1543 stars · 355 forks observed · 2026-10-21

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

lwrb is a lightweight, platform-independent C library implementing a generic FIFO ring (cyclic) buffer with no dynamic memory allocation. It supports zero-copy DMA transfers, peek/skip/advance operations, event notifications, and is thread/interrupt-safe for single-producer single-consumer use on CPUs with atomic size_t access.

Use cases

• implement a fifo byte buffer in embedded c
• buffer uart or spi data with dma zero-copy
• single producer single consumer pipe between isr and main loop
• cyclic buffer without dynamic memory allocation
• peek and skip bytes in a stream buffer
• ring buffer for serial communication on stm32

When to choose

• you need a small, dependency-free C ring buffer for embedded systems
• you want interrupt/DMA-safe single-writer single-reader buffering
• no dynamic allocation is allowed on your target

When to avoid

• you need multi-producer multi-consumer thread-safe queues
• you want a high-level language buffer with dynamic resizing
• your platform requires atomic protection you cannot provide

Facets

library · maturity stable

caching concurrency developer-tools embedded-systems developer-tools c embedded cross-platform windows ring-buffer fifo no-dynamic-allocation dma interrupt-safe embedded-c algorithms linux macos

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