signal: Move to tokio-signal subdirectory

As a preparation to merge with tokio.

22 files changed, 1718 insertions, 0 deletions

diff --git a/tokio-signal/.travis.yml b/tokio-signal/.travis.yml
new file mode 100644
index 00000000..fd408ebf
--- /dev/null
+++ b/tokio-signal/.travis.yml
@@ -0,0 +1,29 @@
+language: rust
+sudo: false
+
+matrix:
+  include:
+    - rust: stable
+    - os: osx
+    - rust: beta
+    - rust: nightly
+
+    - rust: nightly
+      before_script:
+        - pip install 'travis-cargo<0.2' --user && export PATH=$HOME/.local/bin:$PATH
+      script:
+        - cargo doc --no-deps --all-features
+      after_success:
+        - travis-cargo --only nightly doc-upload
+
+script:
+  - cargo test --no-fail-fast
+  - rustdoc --test README.md -L target/debug/deps
+
+env:
+  global:
+    - secure: "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"
+
+notifications:
+  email:
+    on_success: never
diff --git a/tokio-signal/CHANGELOG.md b/tokio-signal/CHANGELOG.md
new file mode 100644
index 00000000..04688526
--- /dev/null
+++ b/tokio-signal/CHANGELOG.md
@@ -0,0 +1,41 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+## [0.2.5] - 2018-08-29
+### Fixes
+* Fix a possible starvation when polling multiple `Signal` instances outside of
+a tokio reactor (e.g. by using `Future::wait`)
+
+## [0.2.4] - 2018-08-25
+### Fixes
+* Actually make `unix::bsd` public
+
+## [0.2.3] - 2018-08-25
+### Features
+* Exposes `SIGINFO` on BSD-based operating systems. (#46)
+
+## [0.2.2] - 2018-08-14
+### Fixes
+* Fix starvation of `Signal`s whenever a `Signal` instance is dropped
+* Fix starvation of individual `Signal`s based on their creation order
+
+## [0.2.1] - 2018-05-27
+### Fixes
+* Bump minimum supported version of `mio` to 0.6.14
+
+## 0.2.0 - 2018-05-07
+#### Features
+ * Uses `tokio` instead of `tokio_core` (#24)
+ * Supports all 33 signals on FreeBSD (#27)
+
+[Unreleased]: https://github.com/alexcrichton/tokio-process/compare/0.2.5...HEAD
+[0.2.5]: https://github.com/alexcrichton/tokio-signal/compare/0.2.4...0.2.5
+[0.2.4]: https://github.com/alexcrichton/tokio-signal/compare/0.2.3...0.2.4
+[0.2.3]: https://github.com/alexcrichton/tokio-signal/compare/0.2.2...0.2.3
+[0.2.2]: https://github.com/alexcrichton/tokio-signal/compare/0.2.1...0.2.2
+[0.2.1]: https://github.com/alexcrichton/tokio-signal/compare/0.2.0...0.2.1
diff --git a/tokio-signal/Cargo.toml b/tokio-signal/Cargo.toml
new file mode 100644
index 00000000..b3118ef7
--- /dev/null
+++ b/tokio-signal/Cargo.toml
@@ -0,0 +1,36 @@
+[package]
+name = "tokio-signal"
+version = "0.2.5"
+authors = ["Alex Crichton <alex@alexcrichton.com>"]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/alexcrichton/tokio-signal"
+homepage = "https://github.com/alexcrichton/tokio-signal"
+documentation = "https://docs.rs/tokio-signal/0.2"
+description = """
+An implementation of an asynchronous Unix signal handling backed futures.
+"""
+categories = ["asynchronous"]
+
+[badges]
+travis-ci = { repository = "alexcrichton/tokio-signal" }
+appveyor = { repository = "alexcrichton/tokio-signal" }
+
+[dependencies]
+futures = "0.1.11"
+mio = "0.6.14"
+tokio-reactor = "0.1.0"
+tokio-executor = "0.1.0"
+tokio-io = "0.1"
+
+[target.'cfg(unix)'.dependencies]
+libc = "0.2"
+mio-uds = "0.6"
+signal-hook = "0.1"
+
+[dev-dependencies]
+tokio-core = "0.1.17"
+tokio = "0.1.6"
+
+[target.'cfg(windows)'.dependencies.winapi]
+version = "0.3"
+features = ["minwindef", "wincon"]
diff --git a/tokio-signal/LICENSE-APACHE b/tokio-signal/LICENSE-APACHE
new file mode 100644
index 00000000..16fe87b0
--- /dev/null
+++ b/tokio-signal/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
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+   "You" (or "Your") shall mean an individual or Legal Entity
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+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
+   with Licensor regarding such Contributions.
+
+6. Trademarks. This License does not grant permission to use the trade
+   names, trademarks, service marks, or product names of the Licensor,
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+
+7. Disclaimer of Warranty. Unless required by applicable law or
+   agreed to in writing, Licensor provides the Work (and each
+   Contributor provides its Contributions) on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+   implied, including, without limitation, any warranties or conditions
+   of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+   PARTICULAR PURPOSE. You are solely responsible for determining the
+   appropriateness of using or redistributing the Work and assume any
+   risks associated with Your exercise of permissions under this License.
+
+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
+   result of this License or out of the use or inability to use the
+   Work (including but not limited to damages for loss of goodwill,
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+   has been advised of the possibility of such damages.
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+9. Accepting Warranty or Additional Liability. While redistributing
+   the Work or Derivative Works thereof, You may choose to offer,
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+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
+   defend, and hold each Contributor harmless for any liability
+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
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+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
+   To apply the Apache License to your work, attach the following
+   boilerplate notice, with the fields enclosed by brackets "[]"
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+   file or class name and description of purpose be included on the
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+Copyright [yyyy] [name of copyright owner]
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
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diff --git a/tokio-signal/LICENSE-MIT b/tokio-signal/LICENSE-MIT
new file mode 100644
index 00000000..28e630cf
--- /dev/null
+++ b/tokio-signal/LICENSE-MIT
@@ -0,0 +1,25 @@
+Copyright (c) 2016 Alex Crichton
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/tokio-signal/README.md b/tokio-signal/README.md
new file mode 100644
index 00000000..cb62dfbf
--- /dev/null
+++ b/tokio-signal/README.md
@@ -0,0 +1,58 @@
+# tokio-signal
+
+An implementation of Unix signal handling for Tokio
+
+[![Build Status](https://travis-ci.org/alexcrichton/tokio-signal.svg?branch=master)](https://travis-ci.org/alexcrichton/tokio-signal)
+
+[Documentation](https://docs.rs/tokio-signal)
+
+## Usage
+
+First, add this to your `Cargo.toml`:
+
+```toml
+[dependencies]
+tokio-signal = "0.2"
+```
+
+Next you can use this in conjunction with the `tokio` and `futures` crates:
+
+```rust,no_run
+extern crate futures;
+extern crate tokio;
+extern crate tokio_signal;
+
+use futures::{Future, Stream};
+
+fn main() {
+
+    // Create an infinite stream of "Ctrl+C" notifications. Each item received
+    // on this stream may represent multiple ctrl-c signals.
+    let ctrl_c = tokio_signal::ctrl_c().flatten_stream();
+
+    // Process each ctrl-c as it comes in
+    let prog = ctrl_c.for_each(|()| {
+        println!("ctrl-c received!");
+        Ok(())
+    });
+
+    tokio::run(prog.map_err(|err| panic!("{}", err)));
+}
+```
+
+# License
+
+This project is licensed under either of
+
+ * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
+   http://www.apache.org/licenses/LICENSE-2.0)
+ * MIT license ([LICENSE-MIT](LICENSE-MIT) or
+   http://opensource.org/licenses/MIT)
+
+at your option.
+
+### Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in tokio-signal by you, as defined in the Apache-2.0 license, shall be
+dual licensed as above, without any additional terms or conditions.
diff --git a/tokio-signal/appveyor.yml b/tokio-signal/appveyor.yml
new file mode 100644
index 00000000..6067b9d2
--- /dev/null
+++ b/tokio-signal/appveyor.yml
@@ -0,0 +1,35 @@
+environment:
+  matrix:
+    # Stable channel
+    - TARGET: x86_64-pc-windows-gnu
+      CHANNEL: stable
+    - TARGET: x86_64-pc-windows-msvc
+      CHANNEL: stable
+    # Beta channel
+    - TARGET: x86_64-pc-windows-msvc
+      CHANNEL: beta
+    # Nightly channel
+    - TARGET: x86_64-pc-windows-msvc
+      CHANNEL: nightly
+
+# Install Rust and Cargo
+# (Based on from https://github.com/rust-lang/libc/blob/master/appveyor.yml)
+install:
+  - curl -sSf -o rustup-init.exe https://win.rustup.rs
+  - rustup-init.exe --default-host %TARGET% --default-toolchain %CHANNEL% -y
+  - set PATH=%PATH%;C:\Users\appveyor\.cargo\bin
+  - rustc -Vv
+  - cargo -V
+
+# 'cargo test' takes care of building for us, so disable Appveyor's build stage. This prevents
+# the "directory does not contain a project or solution file" error.
+# source: https://github.com/starkat99/appveyor-rust/blob/master/appveyor.yml#L113
+build: false
+
+test_script:
+  - cargo build --example ctrl-c
+  - rustdoc --test README.md -L target/debug/deps
+
+branches:
+  only:
+    - master
diff --git a/tokio-signal/examples/ctrl-c.rs b/tokio-signal/examples/ctrl-c.rs
new file mode 100644
index 00000000..df821a3f
--- /dev/null
+++ b/tokio-signal/examples/ctrl-c.rs
@@ -0,0 +1,63 @@
+extern crate futures;
+extern crate tokio_core;
+extern crate tokio_signal;
+
+use futures::{Future, Stream};
+use tokio_core::reactor::Core;
+
+/// how many signals to handle before exiting
+const STOP_AFTER: u64 = 10;
+
+fn main() {
+    // set up a Tokio event loop
+    let mut core = Core::new().unwrap();
+
+    // tokio_signal provides a convenience builder for Ctrl+C
+    // this even works cross-platform: linux and windows!
+    //
+    // `fn ctrl_c()` produces a `Future` of the actual stream-initialisation
+    // the `flatten_stream()` convenience method lazily defers that
+    // initialisation, allowing us to use it 'as if' it is already the
+    // stream we want, reducing boilerplate Future-handling.
+    let endless_stream = tokio_signal::ctrl_c().flatten_stream();
+    // don't keep going forever: convert the endless stream to a bounded one.
+    let limited_stream = endless_stream.take(STOP_AFTER);
+
+    // how many Ctrl+C have we received so far?
+    let mut counter = 0;
+
+    println!(
+        "This program is now waiting for you to press Ctrl+C {0} times.
+  * If running via `cargo run --example ctrl-c`, Ctrl+C also kills it, \
+    due to https://github.com/rust-lang-nursery/rustup.rs/issues/806
+  * If running the binary directly, the Ctrl+C is properly trapped.
+    Terminate by repeating Ctrl+C {0} times, or ahead of time by \
+    opening a second terminal and issuing `pkill -sigkil ctrl-c`",
+        STOP_AFTER
+    );
+
+    // Stream::for_each is a powerful primitive provided by the Futures crate.
+    // It turns a Stream into a Future that completes after all stream-items
+    // have been completed, or the first time the closure returns an error
+    let future = limited_stream.for_each(|()| {
+        // Note how we manipulate the counter without any fancy synchronisation.
+        // The borrowchecker realises there can't be any conflicts, so the closure
+        // can just capture it.
+        counter += 1;
+        println!(
+            "Ctrl+C received {} times! {} more before exit",
+            counter,
+            STOP_AFTER - counter
+        );
+
+        // return Ok-result to continue handling the stream
+        Ok(())
+    });
+
+    // Up until now, we haven't really DONE anything, just prepared
+    // now it's time to actually schedule, and thus execute, the stream
+    // on our event loop
+    core.run(future).unwrap();
+
+    println!("Stream ended, quiting the program.");
+}
diff --git a/tokio-signal/examples/multiple.rs b/tokio-signal/examples/multiple.rs
new file mode 100644
index 00000000..38052318
--- /dev/null
+++ b/tokio-signal/examples/multiple.rs
@@ -0,0 +1,38 @@
+//! A small example of how to listen for two signals at the same time
+
+extern crate futures;
+extern crate tokio_core;
+extern crate tokio_signal;
+
+use futures::{Future, Stream};
+use tokio_core::reactor::Core;
+use tokio_signal::unix::{Signal, SIGINT, SIGTERM};
+
+fn main() {
+    let mut core = Core::new().unwrap();
+
+    // Create a stream for each of the signals we'd like to handle.
+    let sigint = Signal::new(SIGINT).flatten_stream();
+    let sigterm = Signal::new(SIGTERM).flatten_stream();
+
+    // Use the `select` combinator to merge these two streams into one
+    let stream = sigint.select(sigterm);
+
+    // Wait for a signal to arrive
+    println!("Waiting for SIGINT or SIGTERM");
+    println!(
+        "  TIP: use `pkill -sigint multiple` from a second terminal \
+         to send a SIGINT to all processes named 'multiple' \
+         (i.e. this binary)"
+    );
+    let (item, _rest) = core.run(stream.into_future()).ok().unwrap();
+
+    // Figure out which signal we received
+    let item = item.unwrap();
+    if item == SIGINT {
+        println!("received SIGINT");
+    } else {
+        assert_eq!(item, SIGTERM);
+        println!("received SIGTERM");
+    }
+}
diff --git a/tokio-signal/examples/sighup-example.rs b/tokio-signal/examples/sighup-example.rs
new file mode 100644
index 00000000..e48e23ea
--- /dev/null
+++ b/tokio-signal/examples/sighup-example.rs
@@ -0,0 +1,39 @@
+extern crate futures;
+extern crate tokio_core;
+extern crate tokio_signal;
+
+use futures::{Future, Stream};
+use tokio_core::reactor::Core;
+use tokio_signal::unix::{Signal, SIGHUP};
+
+fn main() {
+    // set up a Tokio event loop
+    let mut core = Core::new().unwrap();
+
+    // on Unix, we can listen to whatever signal we want, in this case: SIGHUP
+    let stream = Signal::new(SIGHUP).flatten_stream();
+
+    println!("Waiting for SIGHUPS (Ctrl+C to quit)");
+    println!(
+        "  TIP: use `pkill -sighup sighup-example` from a second terminal \
+         to send a SIGHUP to all processes named 'sighup-example' \
+         (i.e. this binary)"
+    );
+
+    // for_each is a powerful primitive provided by the Futures crate
+    // it turns a Stream into a Future that completes after all stream-items
+    // have been completed.
+    let future = stream.for_each(|the_signal| {
+        println!(
+            "*Got signal {:#x}* I should probably reload my config \
+             or something",
+            the_signal
+        );
+        Ok(())
+    });
+
+    // Up until now, we haven't really DONE anything, just prepared
+    // now it's time to actually schedule, and thus execute, the stream
+    // on our event loop, and loop forever
+    core.run(future).unwrap();
+}
diff --git a/tokio-signal/src/lib.rs b/tokio-signal/src/lib.rs
new file mode 100644
index 00000000..29dc914c
--- /dev/null
+++ b/tokio-signal/src/lib.rs
@@ -0,0 +1,147 @@
+//! Asynchronous signal handling for Tokio
+//!
+//! This crate implements asynchronous signal handling for Tokio, an
+//! asynchronous I/O framework in Rust. The primary type exported from this
+//! crate, `unix::Signal`, allows listening for arbitrary signals on Unix
+//! platforms, receiving them in an asynchronous fashion.
+//!
+//! Note that signal handling is in general a very tricky topic and should be
+//! used with great care. This crate attempts to implement 'best practice' for
+//! signal handling, but it should be evaluated for your own applications' needs
+//! to see if it's suitable.
+//!
+//! The are some fundamental limitations of this crate documented on the
+//! `Signal` structure as well.
+//!
+//! # Examples
+//!
+//! Print out all ctrl-C notifications received
+//!
+//! ```rust,no_run
+//! extern crate futures;
+//! extern crate tokio_core;
+//! extern crate tokio_signal;
+//!
+//! use tokio_core::reactor::Core;
+//! use futures::{Future, Stream};
+//!
+//! fn main() {
+//!     let mut core = Core::new().unwrap();
+//!
+//!     // Create an infinite stream of "Ctrl+C" notifications. Each item received
+//!     // on this stream may represent multiple ctrl-c signals.
+//!     let ctrl_c = tokio_signal::ctrl_c().flatten_stream();
+//!
+//!     // Process each ctrl-c as it comes in
+//!     let prog = ctrl_c.for_each(|()| {
+//!         println!("ctrl-c received!");
+//!         Ok(())
+//!     });
+//!
+//!     core.run(prog).unwrap();
+//! }
+//! ```
+//!
+//! Wait for SIGHUP on Unix
+//!
+//! ```rust,no_run
+//! # extern crate futures;
+//! # extern crate tokio_core;
+//! # extern crate tokio_signal;
+//! # #[cfg(unix)]
+//! # mod foo {
+//! #
+//! extern crate futures;
+//! extern crate tokio_core;
+//! extern crate tokio_signal;
+//!
+//! use tokio_core::reactor::Core;
+//! use futures::{Future, Stream};
+//! use tokio_signal::unix::{Signal, SIGHUP};
+//!
+//! fn main() {
+//!     let mut core = Core::new().unwrap();
+//!
+//!     // Like the previous example, this is an infinite stream of signals
+//!     // being received, and signals may be coalesced while pending.
+//!     let stream = Signal::new(SIGHUP).flatten_stream();
+//!
+//!     // Convert out stream into a future and block the program
+//!     core.run(stream.into_future()).ok().unwrap();
+//! }
+//! # }
+//! # fn main() {}
+//! ```
+
+#![doc(html_root_url = "https://docs.rs/tokio-signal/0.2")]
+#![deny(missing_docs)]
+
+extern crate futures;
+extern crate mio;
+extern crate tokio_executor;
+extern crate tokio_io;
+extern crate tokio_reactor;
+
+use std::io;
+
+use futures::stream::Stream;
+use futures::{future, Future};
+use tokio_reactor::Handle;
+
+pub mod unix;
+pub mod windows;
+
+/// A future whose error is `io::Error`
+pub type IoFuture<T> = Box<Future<Item = T, Error = io::Error> + Send>;
+/// A stream whose error is `io::Error`
+pub type IoStream<T> = Box<Stream<Item = T, Error = io::Error> + Send>;
+
+/// Creates a stream which receives "ctrl-c" notifications sent to a process.
+///
+/// In general signals are handled very differently across Unix and Windows, but
+/// this is somewhat cross platform in terms of how it can be handled. A ctrl-c
+/// event to a console process can be represented as a stream for both Windows
+/// and Unix.
+///
+/// This function binds to the default event loop. Note that
+/// there are a number of caveats listening for signals, and you may wish to
+/// read up on the documentation in the `unix` or `windows` module to take a
+/// peek.
+pub fn ctrl_c() -> IoFuture<IoStream<()>> {
+    ctrl_c_handle(&Handle::current())
+}
+
+/// Creates a stream which receives "ctrl-c" notifications sent to a process.
+///
+/// In general signals are handled very differently across Unix and Windows, but
+/// this is somewhat cross platform in terms of how it can be handled. A ctrl-c
+/// event to a console process can be represented as a stream for both Windows
+/// and Unix.
+///
+/// This function receives a `Handle` to an event loop and returns a future
+/// which when resolves yields a stream receiving all signal events. Note that
+/// there are a number of caveats listening for signals, and you may wish to
+/// read up on the documentation in the `unix` or `windows` module to take a
+/// peek.
+pub fn ctrl_c_handle(handle: &Handle) -> IoFuture<IoStream<()>> {
+    return ctrl_c_imp(handle);
+
+    #[cfg(unix)]
+    fn ctrl_c_imp(handle: &Handle) -> IoFuture<IoStream<()>> {
+        let handle = handle.clone();
+        Box::new(future::lazy(move || {
+            unix::Signal::with_handle(unix::libc::SIGINT, &handle)
+                .map(|x| Box::new(x.map(|_| ())) as Box<Stream<Item = _, Error = _> + Send>)
+        }))
+    }
+
+    #[cfg(windows)]
+    fn ctrl_c_imp(handle: &Handle) -> IoFuture<IoStream<()>> {
+        let handle = handle.clone();
+        // Use lazy to ensure that `ctrl_c` gets called while on an event loop
+        Box::new(future::lazy(move || {
+            windows::Event::ctrl_c_handle(&handle)
+                .map(|x| Box::new(x) as Box<Stream<Item = _, Error = _> + Send>)
+        }))
+    }
+}
diff --git a/tokio-signal/src/unix.rs b/tokio-signal/src/unix.rs
new file mode 100644
index 00000000..fa2cba54
--- /dev/null
+++ b/tokio-signal/src/unix.rs
@@ -0,0 +1,385 @@
+//! Unix-specific types for signal handling.
+//!
+//! This module is only defined on Unix platforms and contains the primary
+//! `Signal` type for receiving notifications of signals.
+
+#![cfg(unix)]
+
+pub extern crate libc;
+extern crate mio;
+extern crate mio_uds;
+extern crate signal_hook;
+
+use std::io::{self, Error, ErrorKind};
+use std::io::prelude::*;
+use std::sync::atomic::{AtomicBool, Ordering};
+use std::sync::{Mutex, Once, ONCE_INIT};
+
+use self::libc::c_int;
+use self::mio_uds::UnixStream;
+use futures::future;
+use futures::sync::mpsc::{channel, Receiver, Sender};
+use futures::{Async, AsyncSink, Future};
+use futures::{Poll, Sink, Stream};
+use tokio_reactor::{Handle, PollEvented};
+use tokio_io::IoFuture;
+
+pub use self::libc::{SIGUSR1, SIGUSR2, SIGINT, SIGTERM};
+pub use self::libc::{SIGALRM, SIGHUP, SIGPIPE, SIGQUIT, SIGTRAP};
+
+/// BSD-specific definitions
+#[cfg(any(
+        target_os = "dragonfly",
+        target_os = "freebsd",
+        target_os = "macos",
+        target_os = "netbsd",
+        target_os = "openbsd",
+))]
+pub mod bsd {
+    #[cfg(any(target_os = "dragonfly