Struct base::sys::linux::SignalFd

pub struct SignalFd {
    signalfd: File,
    signal: c_int,
}

A safe wrapper around a Linux signalfd (man 2 signalfd).

A signalfd can be used for non-synchronous signals (such as SIGCHLD) so that signals can be processed without the use of a signal handler.

Fields

signalfd: File

signal: c_int

Implementations

impl SignalFd

pub fn new(signal: c_int) -> Result<SignalFd, Error>

Creates a new SignalFd for the given signal, blocking the normal handler for the signal as well. Since we mask out the normal handler, this is a risky operation - signal masking will persist across fork and even exec so the user of SignalFd should think long and hard about when to mask signals.

pub fn read(&self) -> Result<Option<signalfd_siginfo>, Error>

Read a siginfo struct from the signalfd, if available.

Trait Implementations

impl AsRawDescriptor for SignalFd

fn as_raw_descriptor(&self) -> RawDescriptor

Returns the underlying raw descriptor.

impl AsRawFd for SignalFd

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Drop for SignalFd

fn drop(&mut self)

Executes the destructor for this type.