Module nix::sys::timerfd

Available on crate feature time only.

Timer API via file descriptors.

Timer FD is a Linux-only API to create timers and get expiration notifications through file descriptors.

For more documentation, please read timerfd_create(2).

Examples

Create a new one-shot timer that expires after 1 second.

// We create a new monotonic timer.
let timer = TimerFd::new(ClockId::CLOCK_MONOTONIC, TimerFlags::empty())
    .unwrap();

// We set a new one-shot timer in 1 seconds.
timer.set(
    Expiration::OneShot(TimeSpec::seconds(1)),
    TimerSetTimeFlags::empty()
).unwrap();

// We wait for the timer to expire.
timer.wait().unwrap();

Structs

• TimerFd
  A timerfd instance. This is also a file descriptor, you can feed it to other interfaces taking file descriptors as arguments, epoll for example.
• TimerFlags
  Additional flags to change the behaviour of the file descriptor at the time of creation.
• TimerSetTimeFlags
  Flags that are used for arming the timer.

Enums

• ClockId
  The type of the clock used to mark the progress of the timer. For more details on each kind of clock, please refer to timerfd_create(2).
• Expiration
  An enumeration allowing the definition of the expiration time of an alarm, recurring or not.