linux-support 0.0.25

Comprehensive Linux support for namespaces, cgroups, processes, scheduling, parsing /proc, parsing /sys, signals, hyper threads, CPUS, NUMA nodes, unusual file descriptors, PCI devices and much, much more
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// This file is part of file-descriptors. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/file-descriptors/master/COPYRIGHT. No part of file-descriptors, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2018-2019 The developers of file-descriptors. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/file-descriptors/master/COPYRIGHT.


/// Common raw file descriptor extensions.
pub trait RawFdExt
{
	/// Close a file descriptor.
	fn close(self);
}

impl RawFdExt for RawFd
{
	#[inline(always)]
	fn close(self)
	{
		// Please see <http://austingroupbugs.net/view.php?id=529> and <http://austingroupbugs.net/view.php?id=529> for why ignoring the `EINTR` error on close is actually sane.
		//
		// Frankly, the defects here are those of POSIX: (a) signals, and (b) using a file descriptor so small that it isn't thread safe.
		//
		// To be fair, both signals and file descriptors predate threads by a long way.
		unsafe { close(self) };
	}
}