70 lines
2.6 KiB
Rust
70 lines
2.6 KiB
Rust
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// 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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//! Extensions to `std::process` for Windows.
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#![stable(feature = "from_raw_os", since = "1.1.0")]
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use os::windows::io::{FromRawHandle, RawHandle, AsRawHandle};
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use process;
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use sys;
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use sys_common::{AsInner, FromInner};
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#[stable(feature = "from_raw_os", since = "1.1.0")]
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impl FromRawHandle for process::Stdio {
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/// Creates a new instance of `Stdio` from the raw underlying handle.
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///
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/// When this `Stdio` is used as an I/O handle for a child process the given
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/// handle will be duplicated via `DuplicateHandle` to ensure that the
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/// handle has the correct permissions to cross the process boundary.
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///
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/// Note that this function **does not** take ownership of the handle
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/// provided and it will **not** be closed when `Stdio` goes out of scope.
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/// As a result this method is unsafe because due to the lack of knowledge
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/// about the lifetime of the provided handle, this could cause another I/O
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/// primitive's ownership property of its handle to be violated.
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///
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/// Also note that this handle may be used multiple times to spawn
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/// processes. For example the `Command::spawn` function could be called
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/// more than once to spawn more than one process sharing this handle.
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unsafe fn from_raw_handle(handle: RawHandle) -> process::Stdio {
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let handle = sys::handle::RawHandle::new(handle as *mut _);
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process::Stdio::from_inner(sys::process::Stdio::Handle(handle))
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}
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}
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#[stable(feature = "from_raw_os", since = "1.1.0")]
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impl AsRawHandle for process::Child {
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fn as_raw_handle(&self) -> RawHandle {
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self.as_inner().handle().raw() as *mut _
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}
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}
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#[stable(feature = "from_raw_os", since = "1.1.0")]
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impl AsRawHandle for process::ChildStdin {
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fn as_raw_handle(&self) -> RawHandle {
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self.as_inner().handle().raw() as *mut _
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}
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}
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#[stable(feature = "from_raw_os", since = "1.1.0")]
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impl AsRawHandle for process::ChildStdout {
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fn as_raw_handle(&self) -> RawHandle {
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self.as_inner().handle().raw() as *mut _
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}
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}
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#[stable(feature = "from_raw_os", since = "1.1.0")]
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impl AsRawHandle for process::ChildStderr {
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fn as_raw_handle(&self) -> RawHandle {
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self.as_inner().handle().raw() as *mut _
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}
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}
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