1 use std::convert::TryFrom; 2 3 #[test] test_signalfd()4fn test_signalfd() { 5 use nix::sys::signalfd::SignalFd; 6 use nix::sys::signal::{self, raise, Signal, SigSet}; 7 8 // Grab the mutex for altering signals so we don't interfere with other tests. 9 let _m = crate::SIGNAL_MTX.lock().expect("Mutex got poisoned by another test"); 10 11 // Block the SIGUSR1 signal from automatic processing for this thread 12 let mut mask = SigSet::empty(); 13 mask.add(signal::SIGUSR1); 14 mask.thread_block().unwrap(); 15 16 let mut fd = SignalFd::new(&mask).unwrap(); 17 18 // Send a SIGUSR1 signal to the current process. Note that this uses `raise` instead of `kill` 19 // because `kill` with `getpid` isn't correct during multi-threaded execution like during a 20 // cargo test session. Instead use `raise` which does the correct thing by default. 21 raise(signal::SIGUSR1).expect("Error: raise(SIGUSR1) failed"); 22 23 // And now catch that same signal. 24 let res = fd.read_signal().unwrap().unwrap(); 25 let signo = Signal::try_from(res.ssi_signo as i32).unwrap(); 26 assert_eq!(signo, signal::SIGUSR1); 27 } 28