Function set_async_handler 

pub fn set_async_handler<F>(user_handler: F) -> Result<(), Error>
where
    F: Future<Output = ()> + Send + 'static,

Register an asynchronous signal handler for Ctrl-C.

Signal handling will be spawned on the tokio runtime. Should only be called once, typically at the start of your program.

Example

ctrlc_async::set_async_handler(async { println!("Hello world!"); }).expect("Error setting Ctrl-C handler");

Warning

On Unix, any existing SIGINT, SIGTERM and SIGHUP (if termination feature is enabled) or SA_SIGINFO posix signal handlers will be overwritten. On Windows, multiple handler routines are allowed, but they are called on a last-registered, first-called basis until the signal is handled.

On Unix, signal dispositions and signal handlers are inherited by child processes created via fork(2) on, but not by child processes created via execve(2). Signal handlers are not inherited on Windows.

Errors

Will return an error if another ctrlc::set_handler() handler exists or if a system error occurred while setting the handler.

Panics

Any panic in the handler will not be caught and will cause the signal handler thread to stop.