duct/
unix.rs

1extern crate libc;
2
3use std::io;
4
5use super::{Handle, HandleInner, PipeHandle};
6use shared_child::unix::SharedChildExt;
7
8pub trait HandleExt {
9    /// Send a signal to all child processes running under this expression.
10    fn send_signal(&self, signal: libc::c_int) -> io::Result<()>;
11}
12
13impl HandleExt for Handle {
14    fn send_signal(&self, signal: libc::c_int) -> io::Result<()> {
15        self.inner.send_signal(signal)
16    }
17}
18
19impl HandleExt for HandleInner {
20    fn send_signal(&self, signal: libc::c_int) -> io::Result<()> {
21        match *self {
22            HandleInner::Child(ref child_handle) => child_handle.child.send_signal(signal),
23            HandleInner::Pipe(ref pipe_handle) => pipe_handle.send_signal(signal),
24            HandleInner::StdinBytes(ref stdin_bytes_handle) => {
25                stdin_bytes_handle.inner_handle.send_signal(signal)
26            }
27            HandleInner::Unchecked(ref inner_handle) => inner_handle.send_signal(signal),
28        }
29    }
30}
31
32impl HandleExt for PipeHandle {
33    /// Signals both parts of this `pipe` expression. Returns an error if signalling one of the
34    /// expressions returned an error.
35    fn send_signal(&self, signal: libc::c_int) -> io::Result<()> {
36        let left_result = self.left_handle.send_signal(signal);
37        let right_result = self.right_handle.send_signal(signal);
38        left_result.and(right_result)
39    }
40}
41
42#[cfg(test)]
43mod tests {
44    use super::{libc, HandleExt};
45    use crate::cmd;
46    use crate::test::path_to_exe;
47
48    use std::os::unix::process::ExitStatusExt;
49    use std::sync::Arc;
50    use std::thread;
51
52    #[test]
53    fn test_send_signal_from_other_thread() {
54        let sleep_cmd = cmd(path_to_exe("sleep"), &["1000000"]);
55        let handle = Arc::new(sleep_cmd.unchecked().start().unwrap());
56        let handle_clone = handle.clone();
57
58        thread::spawn(move || handle_clone.send_signal(libc::SIGABRT).unwrap());
59        let status = handle.wait().unwrap();
60
61        assert_eq!(Some(libc::SIGABRT), status.status.signal());
62    }
63
64    #[test]
65    fn test_send_signal_to_pipe() {
66        let sleep_cmd = cmd(path_to_exe("sleep"), &["1000000"]);
67        let handle = sleep_cmd
68            .pipe(sleep_cmd.clone())
69            .unchecked()
70            .start()
71            .unwrap();
72        handle.send_signal(libc::SIGABRT).unwrap();
73        let status = handle.wait().unwrap();
74        assert_eq!(Some(libc::SIGABRT), status.status.signal());
75    }
76}
duct/unix.rs

duct/
unix.rs
