Auto merge of #25136 - alexcrichton:drop-the-two, r=aturon

* Remove the 2-suffix from some modules
* Remove some unused files
* Remove double-boxing for `ReentrantMutex`

1 files changed, 50 insertions, 0 deletions

diff --git a/src/libstd/sys/unix/pipe.rs b/src/libstd/sys/unix/pipe.rs
new file mode 100644
index 00000000000..e9d8c69fefb
--- /dev/null
+++ b/src/libstd/sys/unix/pipe.rs
@@ -0,0 +1,50 @@
+// Copyright 2015 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.
+
+use prelude::v1::*;
+
+use sys::fd::FileDesc;
+use io;
+use libc;
+
+////////////////////////////////////////////////////////////////////////////////
+// Anonymous pipes
+////////////////////////////////////////////////////////////////////////////////
+
+pub struct AnonPipe(FileDesc);
+
+pub fn anon_pipe() -> io::Result<(AnonPipe, AnonPipe)> {
+    let mut fds = [0; 2];
+    if unsafe { libc::pipe(fds.as_mut_ptr()) == 0 } {
+        Ok((AnonPipe::from_fd(fds[0]), AnonPipe::from_fd(fds[1])))
+    } else {
+        Err(io::Error::last_os_error())
+    }
+}
+
+impl AnonPipe {
+    pub fn from_fd(fd: libc::c_int) -> AnonPipe {
+        let fd = FileDesc::new(fd);
+        fd.set_cloexec();
+        AnonPipe(fd)
+    }
+
+    pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
+        self.0.read(buf)
+    }
+
+    pub fn write(&self, buf: &[u8]) -> io::Result<usize> {
+        self.0.write(buf)
+    }
+
+    pub fn into_fd(self) -> FileDesc {
+        self.0
+    }
+}