signal: move into tokio-net (#1463)

tokio-net/tests/signal_support/mod.rs

@@ -0,0 +1,31 @@
+#![cfg(unix)]
+#![warn(rust_2018_idioms)]
+
+pub use tokio::runtime::current_thread::{self, Runtime as CurrentThreadRuntime};
+use tokio::timer::Timeout;
+pub use tokio_net::signal::unix::{Signal, SignalKind};
+
+pub use futures_util::future;
+use futures_util::future::FutureExt;
+pub use futures_util::stream::StreamExt;
+use libc::{c_int, getpid, kill};
+use std::future::Future;
+use std::time::Duration;
+
+pub fn with_timeout<F: Future>(future: F) -> impl Future<Output = F::Output> {
+    Timeout::new(future, Duration::from_secs(1)).map(Result::unwrap)
+}
+
+pub fn run_with_timeout<F>(rt: &mut CurrentThreadRuntime, future: F) -> F::Output
+where
+    F: Future,
+{
+    rt.block_on(with_timeout(future))
+}
+
+#[cfg(unix)]
+pub fn send_signal(signal: c_int) {
+    unsafe {
+        assert_eq!(kill(getpid(), signal), 0);
+    }
+}