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std: Improve pipe() functionality

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* os::pipe() now returns IoResult<os::Pipe>
* os::pipe() is now unsafe because it does not arrange for deallocation of file
  descriptors
* os::Pipe fields are renamed from input to reader and out to write.
* PipeStream::pair() has been added. This is a safe method to get a pair of
  pipes.
* Dealing with pipes in native process bindings have been improved to be more
  robust in the face of failure and intermittent errors. This converts a few
  fail!() situations to Err situations.

Closes #9458
cc #13538
Closes #14724
[breaking-change]
This commit is contained in:
Alex Crichton 2014-06-09 13:23:49 -07:00
parent 0b32d42a5d
commit 04eced750e
7 changed files with 211 additions and 118 deletions
Download patch file Download diff file Expand all files Collapse all files

10
src/test/run-pass/sigpipe-should-be-ignored.rs
View file

@ -16,12 +16,12 @@ use std::io::PipeStream;
use std::io::Command;
fn test() {
let os::Pipe { input, out } = os::pipe();
let input = PipeStream::open(input);
let mut out = PipeStream::open(out);
drop(input);
let os::Pipe { reader, writer } = unsafe { os::pipe().unwrap() };
let reader = PipeStream::open(reader);
let mut writer = PipeStream::open(writer);
drop(reader);
let _ = out.write([1]);
let _ = writer.write([1]);
}
fn main() {