Move talpid_core from root to member

1 files changed, 0 insertions, 267 deletions

diff --git a/src/process/monitor.rs b/src/process/monitor.rs
deleted file mode 100644
index 3a6f9fb65f..0000000000
--- a/src/process/monitor.rs
+++ /dev/null
@@ -1,267 +0,0 @@
-use std::io;
-use std::process::{ChildStdout, ChildStderr};
-use std::sync::{Arc, Mutex};
-use std::thread;
-
-
-error_chain! {
-    errors {
-        /// The transition could not be made because the state machine was not in a state that
-        /// could transition to the desired state.
-        InvalidState {
-            description("Invalid state for desired transition")
-        }
-        /// Error representing a failure in spawning the child process
-        Spawn {
-            description("Unable to spawn child process")
-        }
-        /// Error representing a failure in sending a kill signal to the child process
-        Kill {
-            description("Unable to send kill signal to process")
-        }
-    }
-}
-
-/// Trait for objects that represent child processes that `ChildMonitor` can monitor
-pub trait MonitoredChild: Clone + Send + 'static {
-    /// Waits for the child to exit completely, returning if the child exited cleanly or not.
-    fn wait(&self) -> io::Result<bool>;
-
-    /// Forces the child to exit.
-    fn kill(&self) -> io::Result<()>;
-
-    /// Retreives the stdout stream for the child.
-    fn stdout(&mut self) -> Option<ChildStdout>;
-
-    /// Retreives the stderr stream for the child.
-    fn stderr(&mut self) -> Option<ChildStderr>;
-}
-
-/// Trait for objects that can spawn any type of child process object implementing `MonitoredChild`.
-pub trait ChildSpawner: Send + 'static {
-    /// The type of child being spawned.
-    type Child: MonitoredChild;
-
-    /// Spawns the child process, returning a handle to it on success.
-    fn spawn(&mut self) -> io::Result<Self::Child>;
-}
-
-
-enum State<C: MonitoredChild> {
-    Stopped,
-    Running(RunningState<C>),
-}
-
-struct RunningState<C: MonitoredChild> {
-    child: C,
-    thread_handle: Option<thread::JoinHandle<()>>,
-}
-
-/// A child process monitor. Takes care of starting and monitoring a child process and runs the
-/// listener on child exit.
-pub struct ChildMonitor<S: ChildSpawner> {
-    spawner: S,
-    state: Arc<Mutex<State<S::Child>>>,
-}
-
-impl<S: ChildSpawner> ChildMonitor<S> {
-    /// Creates a new `ChildMonitor` that spawns processes with the given `spawner`. The new
-    /// `ChildMonitor` will be in the stopped state and not start any process until you call
-    /// `start()`.
-    pub fn new(spawner: S) -> Self {
-        ChildMonitor {
-            spawner: spawner,
-            state: Arc::new(Mutex::new(State::Stopped)),
-        }
-    }
-
-    /// Starts the child process and begins to monitor it. `listener` will be called as soon as the
-    /// child process exits.
-    pub fn start<L>(&mut self, listener: L) -> Result<(Option<ChildStdout>, Option<ChildStderr>)>
-        where L: FnMut(bool) + Send + 'static
-    {
-        let mut state_lock = self.state.lock().unwrap();
-        if let State::Stopped = *state_lock {
-            let mut child = self.spawner.spawn().chain_err(|| ErrorKind::Spawn)?;
-            let io = (child.stdout(), child.stderr());
-            let thread_handle = self.spawn_monitor(child.clone(), listener);
-            *state_lock = State::Running(RunningState {
-                child: child,
-                thread_handle: Some(thread_handle),
-            });
-            Ok(io)
-        } else {
-            bail!(ErrorKind::InvalidState);
-        }
-    }
-
-    fn spawn_monitor<L>(&self, child: S::Child, mut listener: L) -> thread::JoinHandle<()>
-        where L: FnMut(bool) + Send + 'static
-    {
-        let state_mutex = self.state.clone();
-        thread::spawn(move || {
-            let success = child.wait().unwrap_or(false);
-            {
-                let mut state_lock = state_mutex.lock().unwrap();
-                *state_lock = State::Stopped;
-            }
-            listener(success);
-        })
-    }
-
-    /// Sends a kill signal to the child process.
-    pub fn stop(&self) -> Result<()> {
-        let state_lock = self.state.lock().unwrap();
-        if let State::Running(ref running_state) = *state_lock {
-            running_state.child.kill().chain_err(|| ErrorKind::Kill)?;
-            Ok(())
-        } else {
-            bail!(ErrorKind::InvalidState);
-        }
-    }
-}
-
-impl<S: ChildSpawner> Drop for ChildMonitor<S> {
-    fn drop(&mut self) {
-        let thread_handle = {
-            let mut state_lock = self.state.lock().unwrap();
-            if let State::Running(ref mut state) = *state_lock {
-                let _ = state.child.kill();
-                state.thread_handle.take()
-            } else {
-                None
-            }
-        };
-        if let Some(thread_handle) = thread_handle {
-            let _ = thread_handle.join();
-        }
-    }
-}
-
-
-#[cfg(test)]
-mod child_monitor_tests {
-    use super::*;
-    use std::io;
-    use std::process::{ChildStdout, ChildStderr};
-    use std::sync::{Arc, Mutex};
-    use std::sync::mpsc;
-    use std::thread;
-    use std::time::Duration;
-
-    #[derive(Clone)]
-    struct MockChild {
-        died: Arc<Mutex<bool>>,
-    }
-
-    impl MockChild {
-        pub fn instant_exit() -> Self {
-            Self::new(true)
-        }
-
-        pub fn alive_until_kill() -> Self {
-            Self::new(false)
-        }
-
-        fn new(died: bool) -> Self {
-            MockChild { died: Arc::new(Mutex::new(died)) }
-        }
-    }
-
-    impl MonitoredChild for MockChild {
-        fn wait(&self) -> io::Result<bool> {
-            loop {
-                if *self.died.lock().unwrap() {
-                    break;
-                }
-                thread::sleep(Duration::new(0, 1_000_000));
-            }
-            Ok(true)
-        }
-
-        fn kill(&self) -> io::Result<()> {
-            *self.died.lock().unwrap() = true;
-            Ok(())
-        }
-
-        fn stdout(&mut self) -> Option<ChildStdout> {
-            None
-        }
-
-        fn stderr(&mut self) -> Option<ChildStderr> {
-            None
-        }
-    }
-
-    struct MockChildSpawner {
-        spawn_result: Option<MockChild>,
-    }
-
-    impl MockChildSpawner {
-        pub fn new(spawn_result: Option<MockChild>) -> Self {
-            MockChildSpawner { spawn_result: spawn_result }
-        }
-    }
-
-    impl ChildSpawner for MockChildSpawner {
-        type Child = MockChild;
-
-        fn spawn(&mut self) -> io::Result<MockChild> {
-            self.spawn_result
-                .clone()
-                .ok_or(io::Error::new(io::ErrorKind::Other, "Mocking a failed process spawn"))
-        }
-    }
-
-    /// Tries to recv a message from the given `$rx` for one second and tries to match it with the
-    /// given expected value, `$expected`
-    macro_rules! assert_event {
-        ($rx:ident, $expected:pat) => {{
-            let result = $rx.recv_timeout(Duration::new(1, 0));
-            assert_matches!(result, $expected);
-        }}
-    }
-
-    #[test]
-    fn normal_start() {
-        let spawner = MockChildSpawner::new(Some(MockChild::instant_exit()));
-        let mut testee = ChildMonitor::new(spawner);
-
-        let (tx, rx) = mpsc::channel();
-        assert!(testee.start(move |success| tx.send(success).unwrap()).is_ok());
-        assert_event!(rx, Ok(true));
-    }
-
-    #[test]
-    fn start_failed() {
-        let spawner = MockChildSpawner::new(None);
-        let mut testee = ChildMonitor::new(spawner);
-
-        let (tx, rx) = mpsc::channel();
-        assert!(testee.start(move |success| tx.send(success).unwrap()).is_err());
-        // Make sure that the listener is not kept anywhere. Failing to start should drop the
-        // listener
-        assert_event!(rx, Err(mpsc::RecvTimeoutError::Disconnected));
-    }
-
-    #[test]
-    fn normal_stop() {
-        let spawner = MockChildSpawner::new(Some(MockChild::alive_until_kill()));
-        let mut testee = ChildMonitor::new(spawner);
-
-        let (tx, rx) = mpsc::channel();
-        assert!(testee.start(move |success| tx.send(success).unwrap()).is_ok());
-        assert_event!(rx, Err(mpsc::RecvTimeoutError::Timeout));
-
-        assert!(testee.stop().is_ok());
-        assert_event!(rx, Ok(true));
-    }
-
-    #[test]
-    fn stop_without_start() {
-        let spawner = MockChildSpawner::new(Some(MockChild::alive_until_kill()));
-        let testee = ChildMonitor::new(spawner);
-
-        assert_matches!(testee.stop(), Err(Error(ErrorKind::InvalidState, _)));
-    }
-}