1use std::convert::TryFrom;
2
3#[test]
4fn test_signalfd() {
5 use nix::sys::signal::{self, raise, SigSet, Signal};
6 use nix::sys::signalfd::SignalFd;
7
8 // Grab the mutex for altering signals so we don't interfere with other tests.
9 let _m = crate::SIGNAL_MTX.lock();
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