The guide to signal handling in Rust

A signal is a software interrupt used to notify a process of specific events, allowing it to take appropriate actions like terminating or handling errors. In the Rust programming language, signal handling can be implemented using various libraries such as signal_hook, nix, libc, and tokio, which primarily use C bindings. Signals can be triggered by different sources, including the operating system, user input, or hardware, and not all signals can be managed by a user-defined handler. The process of handling signals in Rust involves understanding signal dispositions, which dictate whether a signal will terminate a process, be ignored, or be caught and handled. Signal masking is a technique used to temporarily block signals during critical code execution to prevent interruptions. The text provides examples of handling signals with the tokio crate and blocking/unblocking signals with the nix crate, emphasizing the ease and efficiency of signal management in Rust despite limited documentation.

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