Beyond Ctrl-C: The Dark Corners of Unix Signal Handling

In this talk, Rain explores the complexities of Unix signal handling, going beyond the common use of Ctrl-C. The presentation delves into why understanding signals is crucial for long-running services and command-line tools, particularly when dealing with data corruption or interrupted operations. It covers the core concepts of signals, default actions, signal handlers, and the challenges of ensuring signal safety in asynchronous programming. The talk highlights the self-pipe trick as a modern approach to handling signals and demonstrates how async Rust, with tools like Tokio's `select`, provides a more robust and scalable solution for managing signals and inter-process communication.