wire up sigchld

src/gliumwindows.rs

@@ -426,4 +426,19 @@ impl TerminalWindow {
     pub fn need_paint(&self) -> bool {
         self.terminal.has_dirty_lines()
     }
+
+    pub fn test_for_child_exit(&mut self) -> Result<(), Error> {
+        match self.process.try_wait() {
+            Ok(Some(status)) => {
+                bail!("child exited: {}", status);
+            }
+            Ok(None) => {
+                println!("child still running");
+                Ok(())
+            }
+            Err(e) => {
+                bail!("failed to wait for child: {}", e);
+            }
+        }
+    }
 }

src/main.rs

@@ -93,6 +93,9 @@ fn run_glium(
     let poll = Poll::new()?;
     poll.register(&master, Token(0), Ready::readable(), PollOpt::edge())?;
 
+    let waiter = sigchld::ChildWaiter::new()?;
+    poll.register(&waiter, Token(2), Ready::readable(), PollOpt::edge())?;
+
     let mut events_loop = glium::glutin::EventsLoop::new();
 
     let mut window = gliumwindows::TerminalWindow::new(
@@ -120,7 +123,13 @@ fn run_glium(
         if poll.poll(&mut events, Some(Duration::new(0, 2000)))? != 0 {
             for event in &events {
                 if event.token() == Token(0) && event.readiness().is_readable() {
-                    window.handle_pty_readable_event();
+                    window.handle_pty_readable_event()?;
+                }
+                if event.token() == Token(2) {
+                    println!("sigchld ready");
+                    let pid = waiter.read_one()?;
+                    println!("got sigchld from pid {}", pid);
+                    window.test_for_child_exit()?;
                 }
             }
         } else if window.need_paint() {