d15db1d392
Most of this is platform-specific anyway, and we generally have to jump through fewer hoops to do the equivalent operation on Windows. One benefit for Windows today is that this new structure avoids an extra `DuplicateHandle` when creating pipes. For Unix, however, the behavior should be the same. Note that this is just a pure refactoring, no functionality was added or removed.
47 lines
1.4 KiB
Rust
47 lines
1.4 KiB
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use io;
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use ptr;
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use sys::cvt;
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use sys::c;
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use sys::handle::Handle;
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////////////////////////////////////////////////////////////////////////////////
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// Anonymous pipes
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////////////////////////////////////////////////////////////////////////////////
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pub struct AnonPipe {
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inner: Handle,
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}
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pub fn anon_pipe() -> io::Result<(AnonPipe, AnonPipe)> {
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let mut reader = c::INVALID_HANDLE_VALUE;
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let mut writer = c::INVALID_HANDLE_VALUE;
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try!(cvt(unsafe {
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c::CreatePipe(&mut reader, &mut writer, ptr::null_mut(), 0)
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}));
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let reader = Handle::new(reader);
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let writer = Handle::new(writer);
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Ok((AnonPipe { inner: reader }, AnonPipe { inner: writer }))
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}
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impl AnonPipe {
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pub fn handle(&self) -> &Handle { &self.inner }
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pub fn into_handle(self) -> Handle { self.inner }
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pub fn read(&self, buf: &mut [u8]) -> io::Result<usize> {
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self.inner.read(buf)
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}
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pub fn write(&self, buf: &[u8]) -> io::Result<usize> {
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self.inner.write(buf)
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}
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}
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