std: Remove old_io/old_path/rand modules

This commit entirely removes the old I/O, path, and rand modules. All
functionality has been deprecated and unstable for quite some time now!

1 files changed, 0 insertions, 1239 deletions

diff --git a/src/libstd/old_io/process.rs b/src/libstd/old_io/process.rs
deleted file mode 100644
index b55d1f4db07..00000000000
--- a/src/libstd/old_io/process.rs
+++ /dev/null
@@ -1,1239 +0,0 @@
-// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Bindings for executing child processes
-
-#![allow(non_upper_case_globals)]
-#![unstable(feature = "old_io")]
-#![deprecated(since = "1.0.0",
-              reason = "replaced with the std::process module")]
-
-pub use self::StdioContainer::*;
-pub use self::ProcessExit::*;
-
-use prelude::v1::*;
-
-use collections::HashMap;
-use ffi::CString;
-use fmt;
-use old_io::pipe::{PipeStream, PipePair};
-use old_io::{IoResult, IoError, Reader, Writer};
-use old_io;
-use old_path::{Path, GenericPath};
-use libc;
-use os;
-use old_path::BytesContainer;
-use sync::mpsc::{channel, Receiver};
-use sys::fs::FileDesc;
-use sys::process::Process as ProcessImp;
-use sys;
-use thread;
-
-#[cfg(windows)] use hash;
-#[cfg(windows)] use str;
-
-/// Signal a process to exit, without forcibly killing it. Corresponds to
-/// SIGTERM on unix platforms.
-#[cfg(windows)] pub const PleaseExitSignal: isize = 15;
-/// Signal a process to exit immediately, forcibly killing it. Corresponds to
-/// SIGKILL on unix platforms.
-#[cfg(windows)] pub const MustDieSignal: isize = 9;
-/// Signal a process to exit, without forcibly killing it. Corresponds to
-/// SIGTERM on unix platforms.
-#[cfg(not(windows))] pub const PleaseExitSignal: isize = libc::SIGTERM as isize;
-/// Signal a process to exit immediately, forcibly killing it. Corresponds to
-/// SIGKILL on unix platforms.
-#[cfg(not(windows))] pub const MustDieSignal: isize = libc::SIGKILL as isize;
-
-/// Representation of a running or exited child process.
-///
-/// This structure is used to represent and manage child processes. A child
-/// process is created via the `Command` struct, which configures the spawning
-/// process and can itself be constructed using a builder-style interface.
-///
-/// # Examples
-///
-/// ```should_panic
-/// # #![feature(old_io)]
-/// use std::old_io::*;
-///
-/// let mut child = match Command::new("/bin/cat").arg("file.txt").spawn() {
-///     Ok(child) => child,
-///     Err(e) => panic!("failed to execute child: {}", e),
-/// };
-///
-/// let contents = child.stdout.as_mut().unwrap().read_to_end();
-/// assert!(child.wait().unwrap().success());
-/// ```
-pub struct Process {
-    handle: ProcessImp,
-    forget: bool,
-
-    /// None until wait() is called.
-    exit_code: Option<ProcessExit>,
-
-    /// Manually delivered signal
-    exit_signal: Option<isize>,
-
-    /// Deadline after which wait() will return
-    deadline: u64,
-
-    /// Handle to the child's stdin, if the `stdin` field of this process's
-    /// `ProcessConfig` was `CreatePipe`. By default, this handle is `Some`.
-    pub stdin: Option<PipeStream>,
-
-    /// Handle to the child's stdout, if the `stdout` field of this process's
-    /// `ProcessConfig` was `CreatePipe`. By default, this handle is `Some`.
-    pub stdout: Option<PipeStream>,
-
-    /// Handle to the child's stderr, if the `stderr` field of this process's
-    /// `ProcessConfig` was `CreatePipe`. By default, this handle is `Some`.
-    pub stderr: Option<PipeStream>,
-}
-
-/// A representation of environment variable name
-/// It compares case-insensitive on Windows and case-sensitive everywhere else.
-#[cfg(not(windows))]
-#[derive(Hash, PartialEq, Eq, Clone, Debug)]
-struct EnvKey(CString);
-
-#[doc(hidden)]
-#[cfg(windows)]
-#[derive(Eq, Clone, Debug)]
-struct EnvKey(CString);
-
-#[cfg(windows)]
-impl hash::Hash for EnvKey {
-    fn hash<H: hash::Hasher>(&self, state: &mut H) {
-        use ascii::AsciiExt;
-        let &EnvKey(ref x) = self;
-        match str::from_utf8(x.as_bytes()) {
-            Ok(s) => for ch in s.chars() {
-                ch.to_ascii_lowercase().hash(state);
-            },
-            Err(..) => x.hash(state)
-        }
-    }
-}
-
-#[cfg(windows)]
-impl PartialEq for EnvKey {
-    fn eq(&self, other: &EnvKey) -> bool {
-        use ascii::AsciiExt;
-        let &EnvKey(ref x) = self;
-        let &EnvKey(ref y) = other;
-        match (str::from_utf8(x.as_bytes()), str::from_utf8(y.as_bytes())) {
-            (Ok(xs), Ok(ys)) => {
-                if xs.len() != ys.len() {
-                    return false
-                } else {
-                    for (xch, ych) in xs.chars().zip(ys.chars()) {
-                        if xch.to_ascii_lowercase() != ych.to_ascii_lowercase() {
-                            return false;
-                        }
-                    }
-                    return true;
-                }
-            },
-            // If either is not a valid utf8 string, just compare them byte-wise
-            _ => return x.eq(y)
-        }
-    }
-}
-
-impl BytesContainer for EnvKey {
-    fn container_as_bytes<'a>(&'a self) -> &'a [u8] {
-        let &EnvKey(ref k) = self;
-        k.container_as_bytes()
-    }
-}
-
-/// A HashMap representation of environment variables.
-pub type EnvMap = HashMap<EnvKey, CString>;
-
-/// The `Command` type acts as a process builder, providing fine-grained control
-/// over how a new process should be spawned. A default configuration can be
-/// generated using `Command::new(program)`, where `program` gives a path to the
-/// program to be executed. Additional builder methods allow the configuration
-/// to be changed (for example, by adding arguments) prior to spawning:
-///
-/// ```
-/// # #![feature(old_io)]
-/// use std::old_io::*;
-///
-/// let mut process = match Command::new("sh").arg("-c").arg("echo hello").spawn() {
-///   Ok(p) => p,
-///   Err(e) => panic!("failed to execute process: {}", e),
-/// };
-///
-/// let output = process.stdout.as_mut().unwrap().read_to_end();
-/// ```
-#[derive(Clone)]
-pub struct Command {
-    // The internal data for the builder. Documented by the builder
-    // methods below, and serialized into rt::rtio::ProcessConfig.
-    program: CString,
-    args: Vec<CString>,
-    env: Option<EnvMap>,
-    cwd: Option<CString>,
-    stdin: StdioContainer,
-    stdout: StdioContainer,
-    stderr: StdioContainer,
-    uid: Option<usize>,
-    gid: Option<usize>,
-    detach: bool,
-}
-
-// FIXME (#12938): Until DST lands, we cannot decompose &str into & and str, so
-// we cannot usefully take BytesContainer arguments by reference (without forcing an
-// additional & around &str). So we are instead temporarily adding an instance
-// for &Path, so that we can take BytesContainer as owned. When DST lands, the &Path
-// instance should be removed, and arguments bound by BytesContainer should be passed by
-// reference. (Here: {new, arg, args, env}.)
-
-impl Command {
-    /// Constructs a new `Command` for launching the program at
-    /// path `program`, with the following default configuration:
-    ///
-    /// * No arguments to the program
-    /// * Inherit the current process's environment
-    /// * Inherit the current process's working directory
-    /// * A readable pipe for stdin (file descriptor 0)
-    /// * A writeable pipe for stdout and stderr (file descriptors 1 and 2)
-    ///
-    /// Builder methods are provided to change these defaults and
-    /// otherwise configure the process.
-    pub fn new<T: BytesContainer>(program: T) -> Command {
-        Command {
-            program: CString::new(program.container_as_bytes()).unwrap(),
-            args: Vec::new(),
-            env: None,
-            cwd: None,
-            stdin: CreatePipe(true, false),
-            stdout: CreatePipe(false, true),
-            stderr: CreatePipe(false, true),
-            uid: None,
-            gid: None,
-            detach: false,
-        }
-    }
-
-    /// Add an argument to pass to the program.
-    pub fn arg<'a, T: BytesContainer>(&'a mut self, arg: T) -> &'a mut Command {
-        self.args.push(CString::new(arg.container_as_bytes()).unwrap());
-        self
-    }
-
-    /// Add multiple arguments to pass to the program.
-    pub fn args<'a, T: BytesContainer>(&'a mut self, args: &[T]) -> &'a mut Command {
-        self.args.extend(args.iter().map(|arg| {
-            CString::new(arg.container_as_bytes()).unwrap()
-        }));
-        self
-    }
-    // Get a mutable borrow of the environment variable map for this `Command`.
-    #[allow(deprecated)]
-    fn get_env_map<'a>(&'a mut self) -> &'a mut EnvMap {
-        match self.env {
-            Some(ref mut map) => map,
-            None => {
-                // if the env is currently just inheriting from the parent's,
-                // materialize the parent's env into a hashtable.
-                self.env = Some(::env::vars().map(|(k, v)| {
-                    (EnvKey(CString::new(k).unwrap()),
-                     CString::new(v).unwrap())
-                }).collect());
-                self.env.as_mut().unwrap()
-            }
-        }
-    }
-
-    /// Inserts or updates an environment variable mapping.
-    ///
-    /// Note that environment variable names are case-insensitive (but case-preserving) on Windows,
-    /// and case-sensitive on all other platforms.
-    pub fn env<'a, T, U>(&'a mut self, key: T, val: U)
-                         -> &'a mut Command
-                         where T: BytesContainer, U: BytesContainer {
-        let key = EnvKey(CString::new(key.container_as_bytes()).unwrap());
-        let val = CString::new(val.container_as_bytes()).unwrap();
-        self.get_env_map().insert(key, val);
-        self
-    }
-
-    /// Removes an environment variable mapping.
-    pub fn env_remove<'a, T>(&'a mut self, key: T) -> &'a mut Command
-                             where T: BytesContainer {
-        let key = EnvKey(CString::new(key.container_as_bytes()).unwrap());
-        self.get_env_map().remove(&key);
-        self
-    }
-
-    /// Sets the entire environment map for the child process.
-    ///
-    /// If the given slice contains multiple instances of an environment
-    /// variable, the *rightmost* instance will determine the value.
-    pub fn env_set_all<'a, T, U>(&'a mut self, env: &[(T,U)])
-                                 -> &'a mut Command
-                                 where T: BytesContainer, U: BytesContainer {
-        self.env = Some(env.iter().map(|&(ref k, ref v)| {
-            (EnvKey(CString::new(k.container_as_bytes()).unwrap()),
-             CString::new(v.container_as_bytes()).unwrap())
-        }).collect());
-        self
-    }
-
-    /// Set the working directory for the child process.
-    pub fn cwd<'a>(&'a mut self, dir: &Path) -> &'a mut Command {
-        self.cwd = Some(CString::new(dir.as_vec()).unwrap());
-        self
-    }
-
-    /// Configuration for the child process's stdin handle (file descriptor 0).
-    /// Defaults to `CreatePipe(true, false)` so the input can be written to.
-    pub fn stdin<'a>(&'a mut self, cfg: StdioContainer) -> &'a mut Command {
-        self.stdin = cfg;
-        self
-    }
-
-    /// Configuration for the child process's stdout handle (file descriptor 1).
-    /// Defaults to `CreatePipe(false, true)` so the output can be collected.
-    pub fn stdout<'a>(&'a mut self, cfg: StdioContainer) -> &'a mut Command {
-        self.stdout = cfg;
-        self
-    }
-
-    /// Configuration for the child process's stderr handle (file descriptor 2).
-    /// Defaults to `CreatePipe(false, true)` so the output can be collected.
-    pub fn stderr<'a>(&'a mut self, cfg: StdioContainer) -> &'a mut Command {
-        self.stderr = cfg;
-        self
-    }
-
-    /// Sets the child process's user id. This translates to a `setuid` call in
-    /// the child process. Setting this value on windows will cause the spawn to
-    /// fail. Failure in the `setuid` call on unix will also cause the spawn to
-    /// fail.
-    pub fn uid<'a>(&'a mut self, id: usize) -> &'a mut Command {
-        self.uid = Some(id);
-        self
-    }
-
-    /// Similar to `uid`, but sets the group id of the child process. This has
-    /// the same semantics as the `uid` field.
-    pub fn gid<'a>(&'a mut self, id: usize) -> &'a mut Command {
-        self.gid = Some(id);
-        self
-    }
-
-    /// Sets the child process to be spawned in a detached state. On unix, this
-    /// means that the child is the leader of a new process group.
-    pub fn detached<'a>(&'a mut self) -> &'a mut Command {
-        self.detach = true;
-        self
-    }
-
-    /// Executes the command as a child process, which is returned.
-    pub fn spawn(&self) -> IoResult<Process> {
-        let (their_stdin, our_stdin) = try!(setup_io(self.stdin));
-        let (their_stdout, our_stdout) = try!(setup_io(self.stdout));
-        let (their_stderr, our_stderr) = try!(setup_io(self.stderr));
-
-        match ProcessImp::spawn(self, their_stdin, their_stdout, their_stderr) {
-            Err(e) => Err(e),
-            Ok(handle) => Ok(Process {
-                handle: handle,
-                forget: false,
-                exit_code: None,
-                exit_signal: None,
-                deadline: 0,
-                stdin: our_stdin,
-                stdout: our_stdout,
-                stderr: our_stderr,
-            })
-        }
-    }
-
-    /// Executes the command as a child process, waiting for it to finish and
-    /// collecting all of its output.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// # #![feature(old_io)]
-    /// use std::old_io::Command;
-    ///
-    /// let output = match Command::new("cat").arg("foot.txt").output() {
-    ///     Ok(output) => output,
-    ///     Err(e) => panic!("failed to execute process: {}", e),
-    /// };
-    ///
-    /// println!("status: {}", output.status);
-    /// println!("stdout: {}", String::from_utf8_lossy(output.output.as_ref()));
-    /// println!("stderr: {}", String::from_utf8_lossy(output.error.as_ref()));
-    /// ```
-    pub fn output(&self) -> IoResult<ProcessOutput> {
-        self.spawn().and_then(|p| p.wait_with_output())
-    }
-
-    /// Executes a command as a child process, waiting for it to finish and
-    /// collecting its exit status.
-    ///
-    /// # Examples
-    ///
-    /// ```
-    /// # #![feature(old_io)]
-    /// use std::old_io::Command;
-    ///
-    /// let status = match Command::new("ls").status() {
-    ///     Ok(status) => status,
-    ///     Err(e) => panic!("failed to execute process: {}", e),
-    /// };
-    ///
-    /// println!("process exited with: {}", status);
-    /// ```
-    pub fn status(&self) -> IoResult<ProcessExit> {
-        self.spawn().and_then(|mut p| p.wait())
-    }
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl fmt::Debug for Command {
-    /// Format the program and arguments of a Command for display. Any
-    /// non-utf8 data is lossily converted using the utf8 replacement
-    /// character.
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        try!(write!(f, "{:?}", self.program));
-        for arg in &self.args {
-            try!(write!(f, " '{:?}'", arg));
-        }
-        Ok(())
-    }
-}
-
-fn setup_io(io: StdioContainer) -> IoResult<(Option<PipeStream>, Option<PipeStream>)> {
-    let ours;
-    let theirs;
-    match io {
-        Ignored => {
-            theirs = None;
-            ours = None;
-        }
-        InheritFd(fd) => {
-            theirs = Some(PipeStream::from_filedesc(FileDesc::new(fd, false)));
-            ours = None;
-        }
-        CreatePipe(readable, _writable) => {
-            let PipePair { reader, writer } = try!(PipeStream::pair());
-            if readable {
-                theirs = Some(reader);
-                ours = Some(writer);
-            } else {
-                theirs = Some(writer);
-                ours = Some(reader);
-            }
-        }
-    }
-    Ok((theirs, ours))
-}
-
-// Allow the sys module to get access to the Command state
-impl sys::process::ProcessConfig<EnvKey, CString> for Command {
-    fn program(&self) -> &CString {
-        &self.program
-    }
-    fn args(&self) -> &[CString] {
-        &self.args
-    }
-    fn env(&self) -> Option<&EnvMap> {
-        self.env.as_ref()
-    }
-    fn cwd(&self) -> Option<&CString> {
-        self.cwd.as_ref()
-    }
-    fn uid(&self) -> Option<usize> {
-        self.uid.clone()
-    }
-    fn gid(&self) -> Option<usize> {
-        self.gid.clone()
-    }
-    fn detach(&self) -> bool {
-        self.detach
-    }
-
-}
-
-/// The output of a finished process.
-#[derive(PartialEq, Eq, Clone)]
-pub struct ProcessOutput {
-    /// The status (exit code) of the process.
-    pub status: ProcessExit,
-    /// The data that the process wrote to stdout.
-    pub output: Vec<u8>,
-    /// The data that the process wrote to stderr.
-    pub error: Vec<u8>,
-}
-
-/// Describes what to do with a standard io stream for a child process.
-#[derive(Clone, Copy)]
-pub enum StdioContainer {
-    /// This stream will be ignored. This is the equivalent of attaching the
-    /// stream to `/dev/null`
-    Ignored,
-
-    /// The specified file descriptor is inherited for the stream which it is
-    /// specified for. Ownership of the file descriptor is *not* taken, so the
-    /// caller must clean it up.
-    InheritFd(libc::c_int),
-
-    /// Creates a pipe for the specified file descriptor which will be created
-    /// when the process is spawned.
-    ///
-    /// The first boolean argument is whether the pipe is readable, and the
-    /// second is whether it is writable. These properties are from the view of
-    /// the *child* process, not the parent process.
-    CreatePipe(bool /* readable */, bool /* writable */),
-}
-
-/// Describes the result of a process after it has terminated.
-/// Note that Windows have no signals, so the result is usually ExitStatus.
-#[derive(PartialEq, Eq, Clone, Copy, Debug)]
-pub enum ProcessExit {
-    /// Normal termination with an exit status.
-    ExitStatus(isize),
-
-    /// Termination by signal, with the signal number.
-    ExitSignal(isize),
-}
-
-#[stable(feature = "rust1", since = "1.0.0")]
-impl fmt::Display for ProcessExit {
-    /// Format a ProcessExit enum, to nicely present the information.
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        match *self {
-            ExitStatus(code) =>  write!(f, "exit code: {}", code),
-            ExitSignal(code) =>  write!(f, "signal: {}", code),
-        }
-    }
-}
-
-impl ProcessExit {
-    /// Was termination successful? Signal termination not considered a success,
-    /// and success is defined as a zero exit status.
-    pub fn success(&self) -> bool {
-        return self.matches_exit_status(0);
-    }
-
-    /// Checks whether this ProcessExit matches the given exit status.
-    /// Termination by signal will never match an exit code.
-    pub fn matches_exit_status(&self, wanted: isize) -> bool {
-        *self == ExitStatus(wanted)
-    }
-}
-
-impl Process {
-    /// Sends `signal` to another process in the system identified by `id`.
-    ///
-    /// Note that windows doesn't quite have the same model as unix, so some
-    /// unix signals are mapped to windows signals. Notably, unix termination
-    /// signals (SIGTERM/SIGKILL/SIGINT) are translated to `TerminateProcess`.
-    ///
-    /// Additionally, a signal number of 0 can check for existence of the target
-    /// process. Note, though, that on some platforms signals will continue to
-    /// be successfully delivered if the child has exited, but not yet been
-    /// reaped.
-    pub fn kill(id: libc::pid_t, signal: isize) -> IoResult<()> {
-        unsafe { ProcessImp::killpid(id, signal) }
-    }
-
-    /// Returns the process id of this child process
-    pub fn id(&self) -> libc::pid_t { self.handle.id() }
-
-    /// Sends the specified signal to the child process, returning whether the
-    /// signal could be delivered or not.
-    ///
-    /// Note that signal 0 is interpreted as a poll to check whether the child
-    /// process is still alive or not. If an error is returned, then the child
-    /// process has exited.
-    ///
-    /// On some unix platforms signals will continue to be received after a
-    /// child has exited but not yet been reaped. In order to report the status
-    /// of signal delivery correctly, unix implementations may invoke
-    /// `waitpid()` with `WNOHANG` in order to reap the child as necessary.
-    ///
-    /// # Errors
-    ///
-    /// If the signal delivery fails, the corresponding error is returned.
-    pub fn signal(&mut self, signal: isize) -> IoResult<()> {
-        #[cfg(unix)] fn collect_status(p: &mut Process) {
-            // On Linux (and possibly other unices), a process that has exited will
-            // continue to accept signals because it is "defunct". The delivery of
-            // signals will only fail once the child has been reaped. For this
-            // reason, if the process hasn't exited yet, then we attempt to collect
-            // their status with WNOHANG.
-            if p.exit_code.is_none() {
-                match p.handle.try_wait() {
-                    Some(code) => { p.exit_code = Some(code); }
-                    None => {}
-                }
-            }
-        }
-        #[cfg(windows)] fn collect_status(_p: &mut Process) {}
-
-        collect_status(self);
-
-        // if the process has finished, and therefore had waitpid called,
-        // and we kill it, then on unix we might ending up killing a
-        // newer process that happens to have the same (re-used) id
-        if self.exit_code.is_some() {
-            return Err(IoError {
-                kind: old_io::InvalidInput,
-                desc: "invalid argument: can't kill an exited process",
-                detail: None,
-            })
-        }
-
-        // A successfully delivered signal that isn't 0 (just a poll for being
-        // alive) is recorded for windows (see wait())
-        match unsafe { self.handle.kill(signal) } {
-            Ok(()) if signal == 0 => Ok(()),
-            Ok(()) => { self.exit_signal = Some(signal); Ok(()) }
-            Err(e) => Err(e),
-        }
-
-    }
-
-    /// Sends a signal to this child requesting that it exits. This is
-    /// equivalent to sending a SIGTERM on unix platforms.
-    pub fn signal_exit(&mut self) -> IoResult<()> {
-        self.signal(PleaseExitSignal)
-    }
-
-    /// Sends a signal to this child forcing it to exit. This is equivalent to
-    /// sending a SIGKILL on unix platforms.
-    pub fn signal_kill(&mut self) -> IoResult<()> {
-        self.signal(MustDieSignal)
-    }
-
-    /// Wait for the child to exit completely, returning the status that it
-    /// exited with. This function will continue to have the same return value
-    /// after it has been called at least once.
-    ///
-    /// The stdin handle to the child process will be closed before waiting.
-    ///
-    /// # Errors
-    ///
-    /// This function can fail if a timeout was previously specified via
-    /// `set_timeout` and the timeout expires before the child exits.
-    pub fn wait(&mut self) -> IoResult<ProcessExit> {
-        drop(self.stdin.take());
-        match self.exit_code {
-            Some(code) => Ok(code),
-            None => {
-                let code = try!(self.handle.wait(self.deadline));
-                // On windows, waitpid will never return a signal. If a signal
-                // was successfully delivered to the process, however, we can
-                // consider it as having died via a signal.
-                let code = match self.exit_signal {
-                    None => code,
-                    Some(signal) if cfg!(windows) => ExitSignal(signal),
-                    Some(..) => code,
-                };
-                self.exit_code = Some(code);
-                Ok(code)
-            }
-        }
-    }
-
-    /// Sets a timeout, in milliseconds, for future calls to wait().
-    ///
-    /// The argument specified is a relative distance into the future, in
-    /// milliseconds, after which any call to wait() will return immediately
-    /// with a timeout error, and all future calls to wait() will not block.
-    ///
-    /// A value of `None` will clear any previous timeout, and a value of `Some`
-    /// will override any previously set timeout.
-    ///
-    /// # Examples
-    ///
-    /// ```no_run
-    /// # #![feature(old_io, io)]
-    /// use std::old_io::{Command, IoResult};
-    /// use std::old_io::process::ProcessExit;
-    ///
-    /// fn run_gracefully(prog: &str) -> IoResult<ProcessExit> {
-    ///     let mut p = try!(Command::new("long-running-process").spawn());
-    ///
-    ///     // give the process 10 seconds to finish completely
-    ///     p.set_timeout(Some(10_000));
-    ///     match p.wait() {
-    ///         Ok(status) => return Ok(status),
-    ///         Err(..) => {}
-    ///     }
-    ///
-    ///     // Attempt to exit gracefully, but don't wait for it too long
-    ///     try!(p.signal_exit());
-    ///     p.set_timeout(Some(1_000));
-    ///     match p.wait() {
-    ///         Ok(status) => return Ok(status),
-    ///         Err(..) => {}
-    ///     }
-    ///
-    ///     // Well, we did our best, forcefully kill the process
-    ///     try!(p.signal_kill());
-    ///     p.set_timeout(None);
-    ///     p.wait()
-    /// }
-    /// ```
-    #[unstable(feature = "io",
-               reason = "the type of the timeout is likely to change")]
-    pub fn set_timeout(&mut self, timeout_ms: Option<u64>) {
-        self.deadline = timeout_ms.map(|i| i + sys::timer::now()).unwrap_or(0);
-    }
-
-    /// Simultaneously wait for the child to exit and collect all remaining
-    /// output on the stdout/stderr handles, returning a `ProcessOutput`
-    /// instance.
-    ///
-    /// The stdin handle to the child is closed before waiting.
-    ///
-    /// # Errors
-    ///
-    /// This function can fail for any of the same reasons that `wait()` can
-    /// fail.
-    pub fn wait_with_output(mut self) -> IoResult<ProcessOutput> {
-        drop(self.stdin.take());
-        fn read(stream: Option<old_io::PipeStream>) -> Receiver<IoResult<Vec<u8>>> {
-            let (tx, rx) = channel();
-            match stream {
-                Some(stream) => {
-                    thread::spawn(move || {
-                        let mut stream = stream;
-                        tx.send(stream.read_to_end()).unwrap();
-                    });
-                }
-                None => tx.send(Ok(Vec::new())).unwrap()
-            }
-            rx
-        }
-        let stdout = read(self.stdout.take());
-        let stderr = read(self.stderr.take());
-
-        let status = try!(self.wait());
-
-        Ok(ProcessOutput {
-            status: status,
-            output: stdout.recv().unwrap().unwrap_or(Vec::new()),
-            error:  stderr.recv().unwrap().unwrap_or(Vec::new()),
-        })
-    }
-
-    /// Forgets this process, allowing it to outlive the parent
-    ///
-    /// This function will forcefully prevent calling `wait()` on the child
-    /// process in the destructor, allowing the child to outlive the
-    /// parent. Note that this operation can easily lead to leaking the
-    /// resources of the child process, so care must be taken when
-    /// invoking this method.
-    pub fn forget(mut self) {
-        self.forget = true;
-    }
-}
-
-impl Drop for Process {
-    fn drop(&mut self) {
-        if self.forget { return }
-
-        // Close all I/O before exiting to ensure that the child doesn't wait
-        // forever to print some text or something similar.
-        drop(self.stdin.take());
-        drop(self.stdout.take());
-        drop(self.stderr.take());
-
-        self.set_timeout(None);
-        let _ = self.wait().unwrap();
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use prelude::v1::*;
-    use old_io::{Truncate, Write, TimedOut, timer, process, FileNotFound};
-    use old_io::{Reader, Writer};
-    use old_path::{GenericPath, Path};
-    use old_io::fs::PathExtensions;
-    use old_io::timer::*;
-    use rt::running_on_valgrind;
-    use str;
-    use super::{CreatePipe};
-    use super::{InheritFd, Process, PleaseExitSignal, Command, ProcessOutput};
-    use sync::mpsc::channel;
-    use thread;
-    use time::Duration;
-
-    // FIXME(#10380) these tests should not all be ignored on android.
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn smoke() {
-        let p = Command::new("true").spawn();
-        assert!(p.is_ok());
-        let mut p = p.unwrap();
-        assert!(p.wait().unwrap().success());
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn smoke_failure() {
-        match Command::new("if-this-is-a-binary-then-the-world-has-ended").spawn() {
-            Ok(..) => panic!(),
-            Err(..) => {}
-        }
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn exit_reported_right() {
-        let p = Command::new("false").spawn();
-        assert!(p.is_ok());
-        let mut p = p.unwrap();
-        assert!(p.wait().unwrap().matches_exit_status(1));
-        drop(p.wait().clone());
-    }
-
-    #[cfg(all(unix, not(target_os="android")))]
-    #[test]
-    fn signal_reported_right() {
-        let p = Command::new("/bin/sh").arg("-c").arg("kill -9 $$").spawn();
-        assert!(p.is_ok());
-        let mut p = p.unwrap();
-        match p.wait().unwrap() {
-            process::ExitSignal(9) => {},
-            result => panic!("not terminated by signal 9 (instead, {})", result),
-        }
-    }
-
-    pub fn read_all(input: &mut Reader) -> String {
-        input.read_to_string().unwrap()
-    }
-
-    pub fn run_output(cmd: Command) -> String {
-        let p = cmd.spawn();
-        assert!(p.is_ok());
-        let mut p = p.unwrap();
-        assert!(p.stdout.is_some());
-        let ret = read_all(p.stdout.as_mut().unwrap() as &mut Reader);
-        assert!(p.wait().unwrap().success());
-        return ret;
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn stdout_works() {
-        let mut cmd = Command::new("echo");
-        cmd.arg("foobar").stdout(CreatePipe(false, true));
-        assert_eq!(run_output(cmd), "foobar\n");
-    }
-
-    #[cfg(all(unix, not(target_os="android")))]
-    #[test]
-    fn set_cwd_works() {
-        let mut cmd = Command::new("/bin/sh");
-        cmd.arg("-c").arg("pwd")
-           .cwd(&Path::new("/"))
-           .stdout(CreatePipe(false, true));
-        assert_eq!(run_output(cmd), "/\n");
-    }
-
-    #[cfg(all(unix, not(target_os="android")))]
-    #[test]
-    fn stdin_works() {
-        let mut p = Command::new("/bin/sh")
-                            .arg("-c").arg("read line; echo $line")
-                            .stdin(CreatePipe(true, false))
-                            .stdout(CreatePipe(false, true))
-                            .spawn().unwrap();
-        p.stdin.as_mut().unwrap().write("foobar".as_bytes()).unwrap();
-        drop(p.stdin.take());
-        let out = read_all(p.stdout.as_mut().unwrap() as &mut Reader);
-        assert!(p.wait().unwrap().success());
-        assert_eq!(out, "foobar\n");
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn detach_works() {
-        let mut p = Command::new("true").detached().spawn().unwrap();
-        assert!(p.wait().unwrap().success());
-    }
-
-    #[cfg(windows)]
-    #[test]
-    fn uid_fails_on_windows() {
-        assert!(Command::new("test").uid(10).spawn().is_err());
-    }
-
-    #[cfg(all(unix, not(target_os="android")))]
-    #[test]
-    fn uid_works() {
-        use libc;
-        let mut p = Command::new("/bin/sh")
-                            .arg("-c").arg("true")
-                            .uid(unsafe { libc::getuid() as usize })
-                            .gid(unsafe { libc::getgid() as usize })
-                            .spawn().unwrap();
-        assert!(p.wait().unwrap().success());
-    }
-
-    #[cfg(all(unix, not(target_os="android")))]
-    #[test]
-    fn uid_to_root_fails() {
-        use libc;
-
-        // if we're already root, this isn't a valid test. Most of the bots run
-        // as non-root though (android is an exception).
-        if unsafe { libc::getuid() == 0 } { return }
-        assert!(Command::new("/bin/ls").uid(0).gid(0).spawn().is_err());
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn test_process_status() {
-        let mut status = Command::new("false").status().unwrap();
-        assert!(status.matches_exit_status(1));
-
-        status = Command::new("true").status().unwrap();
-        assert!(status.success());
-    }
-
-    #[test]
-    fn test_process_output_fail_to_start() {
-        match Command::new("/no-binary-by-this-name-should-exist").output() {
-            Err(e) => assert_eq!(e.kind, FileNotFound),
-            Ok(..) => panic!()
-        }
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn test_process_output_output() {
-        let ProcessOutput {status, output, error}
-             = Command::new("echo").arg("hello").output().unwrap();
-        let output_str = str::from_utf8(&output).unwrap();
-
-        assert!(status.success());
-        assert_eq!(output_str.trim().to_string(), "hello");
-        // FIXME #7224
-        if !running_on_valgrind() {
-            assert_eq!(error, Vec::new());
-        }
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn test_process_output_error() {
-        let ProcessOutput {status, output, error}
-             = Command::new("mkdir").arg(".").output().unwrap();
-
-        assert!(status.matches_exit_status(1));
-        assert_eq!(output, Vec::new());
-        assert!(!error.is_empty());
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn test_finish_once() {
-        let mut prog = Command::new("false").spawn().unwrap();
-        assert!(prog.wait().unwrap().matches_exit_status(1));
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn test_finish_twice() {
-        let mut prog = Command::new("false").spawn().unwrap();
-        assert!(prog.wait().unwrap().matches_exit_status(1));
-        assert!(prog.wait().unwrap().matches_exit_status(1));
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn test_wait_with_output_once() {
-        let prog = Command::new("echo").arg("hello").spawn().unwrap();
-        let ProcessOutput {status, output, error} = prog.wait_with_output().unwrap();
-        let output_str = str::from_utf8(&output).unwrap();
-
-        assert!(status.success());
-        assert_eq!(output_str.trim().to_string(), "hello");
-        // FIXME #7224
-        if !running_on_valgrind() {
-            assert_eq!(error, Vec::new());
-        }
-    }
-
-    #[cfg(all(unix, not(target_os="android")))]
-    pub fn pwd_cmd() -> Command {
-        Command::new("pwd")
-    }
-    #[cfg(target_os="android")]
-    pub fn pwd_cmd() -> Command {
-        let mut cmd = Command::new("/system/bin/sh");
-        cmd.arg("-c").arg("pwd");
-        cmd
-    }
-
-    #[cfg(windows)]
-    pub fn pwd_cmd() -> Command {
-        let mut cmd = Command::new("cmd");
-        cmd.arg("/c").arg("cd");
-        cmd
-    }
-
-    #[test]
-    fn test_keep_current_working_dir() {
-        use os;
-        let prog = pwd_cmd().spawn().unwrap();
-
-        let output = String::from_utf8(prog.wait_with_output().unwrap().output).unwrap();
-        let parent_dir = Path::new(::env::current_dir().unwrap().to_str().unwrap());
-        let child_dir = Path::new(output.trim());
-
-        let parent_stat = parent_dir.stat().unwrap();
-        let child_stat = child_dir.stat().unwrap();
-
-        assert_eq!(parent_stat.unstable.device, child_stat.unstable.device);
-        assert_eq!(parent_stat.unstable.inode, child_stat.unstable.inode);
-    }
-
-    #[test]
-    fn test_change_working_directory() {
-        use os;
-        // test changing to the parent of os::getcwd() because we know
-        // the path exists (and os::getcwd() is not expected to be root)
-        let parent_dir = Path::new(::env::current_dir().unwrap().to_str().unwrap());
-        let prog = pwd_cmd().cwd(&parent_dir).spawn().unwrap();
-
-        let output = String::from_utf8(prog.wait_with_output().unwrap().output).unwrap();
-        let child_dir = Path::new(output.trim());
-
-        let parent_stat = parent_dir.stat().unwrap();
-        let child_stat = child_dir.stat().unwrap();
-
-        assert_eq!(parent_stat.unstable.device, child_stat.unstable.device);
-        assert_eq!(parent_stat.unstable.inode, child_stat.unstable.inode);
-    }
-
-    #[cfg(all(unix, not(target_os="android")))]
-    pub fn env_cmd() -> Command {
-        Command::new("env")
-    }
-    #[cfg(target_os="android")]
-    pub fn env_cmd() -> Command {
-        let mut cmd = Command::new("/system/bin/sh");
-        cmd.arg("-c").arg("set");
-        cmd
-    }
-
-    #[cfg(windows)]
-    pub fn env_cmd() -> Command {
-        let mut cmd = Command::new("cmd");
-        cmd.arg("/c").arg("set");
-        cmd
-    }
-
-    #[cfg(not(target_os="android"))]
-    #[test]
-    fn test_inherit_env() {
-        use os;
-        if running_on_valgrind() { return; }
-
-        let prog = env_cmd().spawn().unwrap();
-        let output = String::from_utf8(prog.wait_with_output().unwrap().output).unwrap();
-
-        let r = ::env::vars();
-        for (k, v) in r {
-            // don't check windows magical empty-named variables
-            assert!(k.is_empty() ||
-                    output.contains(&format!("{}={}", k, v)),
-                    "output doesn't contain `{}={}`\n{}",
-                    k, v, output);
-        }
-    }
-    #[cfg(target_os="android")]
-    #[test]
-    fn test_inherit_env() {
-        use os;
-        if running_on_valgrind() { return; }
-
-        let mut prog = env_cmd().spawn().unwrap();
-        let output = String::from_utf8(prog.wait_with_output().unwrap().output).unwrap();
-
-        let r = ::env::vars();
-        for (k, v) in r {
-            // don't check android RANDOM variables
-            if k != "RANDOM".to_string() {
-                assert!(output.contains(&format!("{}={}", k, v)) ||
-                        output.contains(&format!("{}=\'{}\'", k, v)));
-            }
-        }
-    }
-
-    #[test]
-    fn test_override_env() {
-        use os;
-
-        // In some build environments (such as chrooted Nix builds), `env` can
-        // only be found in the explicitly-provided PATH env variable, not in
-        // default places such as /bin or /usr/bin. So we need to pass through
-        // PATH to our sub-process.
-        let path_val: String;
-        let mut new_env = vec![("RUN_TEST_NEW_ENV", "123")];
-        match ::env::var("PATH") {
-            Err(..) => {}
-            Ok(val) => {
-                path_val = val;
-                new_env.push(("PATH", &path_val))
-            }
-        }
-
-        let prog = env_cmd().env_set_all(&new_env).spawn().unwrap();
-        let result = prog.wait_with_output().unwrap();
-        let output = String::from_utf8_lossy(&result.output).to_string();
-
-        assert!(output.contains("RUN_TEST_NEW_ENV=123"),
-                "didn't find RUN_TEST_NEW_ENV inside of:\n\n{}", output);
-    }
-
-    #[test]
-    fn test_add_to_env() {
-        let prog = env_cmd().env("RUN_TEST_NEW_ENV", "123").spawn().unwrap();
-        let result = prog.wait_with_output().unwrap();
-        let output = String::from_utf8_lossy(&result.output).to_string();
-
-        assert!(output.contains("RUN_TEST_NEW_ENV=123"),
-                "didn't find RUN_TEST_NEW_ENV inside of:\n\n{}", output);
-    }
-
-    #[cfg(unix)]
-    pub fn sleeper() -> Process {
-        Command::new("sleep").arg("1000").spawn().unwrap()
-    }
-    #[cfg(windows)]
-    pub fn sleeper() -> Process {
-        // There's a `timeout` command on windows, but it doesn't like having
-        // its output piped, so instead just ping ourselves a few times with
-        // gaps in between so we're sure this process is alive for awhile
-        Command::new("ping").arg("127.0.0.1").arg("-n").arg("1000").spawn().unwrap()
-    }
-
-    #[test]
-    fn test_kill() {
-        let mut p = sleeper();
-        Process::kill(p.id(), PleaseExitSignal).unwrap();
-        assert!(!p.wait().unwrap().success());
-    }
-
-    #[test]
-    fn test_exists() {
-        let mut p = sleeper();
-        assert!(Process::kill(p.id(), 0).is_ok());
-        p.signal_kill().unwrap();
-        assert!(!p.wait().unwrap().success());
-    }
-
-    #[test]
-    fn test_zero() {
-        let mut p = sleeper();
-        p.signal_kill().unwrap();
-        for _ in 0..20 {
-            if p.signal(0).is_err() {
-                assert!(!p.wait().unwrap().success());
-                return
-            }
-            timer::sleep(Duration::milliseconds(100));
-        }
-        panic!("never saw the child go away");
-    }
-
-    #[test]
-    fn wait_timeout() {
-        let mut p = sleeper();
-        p.set_timeout(Some(10));
-        assert_eq!(p.wait().err().unwrap().kind, TimedOut);
-        assert_eq!(p.wait().err().unwrap().kind, TimedOut);
-        p.signal_kill().unwrap();
-        p.set_timeout(None);
-        assert!(p.wait().is_ok());
-    }
-
-    #[test]
-    fn wait_timeout2() {
-        let (tx, rx) = channel();
-        let tx2 = tx.clone();
-        let _t = thread::spawn(move|| {
-            let mut p = sleeper();
-            p.set_timeout(Some(10));
-            assert_eq!(p.wait().err().unwrap().kind, TimedOut);
-            p.signal_kill().unwrap();
-            tx.send(()).unwrap();
-        });
-        let _t = thread::spawn(move|| {
-            let mut p = sleeper();
-            p.set_timeout(Some(10));
-            assert_eq!(p.wait().err().unwrap().kind, TimedOut);
-            p.signal_kill().unwrap();
-            tx2.send(()).unwrap();
-        });
-        rx.recv().unwrap();
-        rx.recv().unwrap();
-    }
-
-    #[test]
-    fn forget() {
-        let p = sleeper();
-        let id = p.id();
-        p.forget();
-        assert!(Process::kill(id, 0).is_ok());
-        assert!(Process::kill(id, PleaseExitSignal).is_ok());
-    }
-
-    #[test]
-    fn dont_close_fd_on_command_spawn() {
-        use sys::fs;
-
-        let path = if cfg!(windows) {
-            Path::new("NUL")
-        } else {
-            Path::new("/dev/null")
-        };
-
-        let fdes = match fs::open(&path, Truncate, Write) {
-            Ok(f) => f,
-            Err(_) => panic!("failed to open file descriptor"),
-        };
-
-        let mut cmd = pwd_cmd();
-        let _ = cmd.stdout(InheritFd(fdes.fd()));
-        assert!(cmd.status().unwrap().success());
-        assert!(fdes.write("extra write\n".as_bytes()).is_ok());
-    }
-
-    #[test]
-    #[cfg(windows)]
-    fn env_map_keys_ci() {
-        use ffi::CString;
-        use super::EnvKey;
-        let mut cmd = Command::new("");
-        cmd.env("path", "foo");
-        cmd.env("Path", "bar");
-        let env = &cmd.env.unwrap();
-        let val = env.get(&EnvKey(CString::new("PATH").unwrap()));
-        assert!(val.unwrap() == &CString::new("bar").unwrap());
-    }
-}