RingFile

crates.io: docs.rs:

The purpose of this tool is to help debug deadlock problems, that only occur under high-performance scenarios. Because writing log to disk will slow down execution, which makes deadlock hidden without racing conditions met.

This crate provides two abstraction:

RingBuffer: to store byte content in memory when written. when offset rewinds, new content will overwrite old content, so that memory consumption is limited to buf_size.

RingFile: to record log content in memory for multi-threaded program. Act as an observer to analyze concurrency problem. It maintain thread local buffer to avoid lock contention. Already integrated into captain-log as LogRingFile sink.