Crate simple_on_shutdown

This crate consists of a convenient macro to specify on shutdown callbacks. This is useful for all runtimes you do not have control over.

The generated main() function of an "actix" web server is a good example. With the exported macro on_shutdown you can easily specify code, that should run during program termination.

IMPORTANT: Use this on the top level of your main() or whatever your current runtimes main function is! The code gets executed when the context it lives in gets dropped. This can be called multiple times (at least with stable Rust 1.48.0) without problem.

Macros

on_shutdown

Convenient constructor macro for ShutdownCallbackDummy. Pass in an expression or a block of code you want to be executed during shutdown. IMPORTANT: Use this on the top level of your main() or whatever your current runtimes main function is! The code gets executed when the context it lives in gets dropped. This can be called multiple times (at least with stable Rust 1.48.0) without problem.

Structs

ShutdownCallbackDummy

Simple type that holds an closure (callback). The closure gets invoked during drop(). This works also fine with applications that do gracefully shutdown via signals, like SIGTERM.