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#[cfg(any(linux_kernel, target_os = "fuchsia"))]
use crate::backend::c;
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[cfg(fix_y2038)]
use crate::timespec::LibcTimespec;
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[cfg(fix_y2038)]
use crate::timespec::Timespec;
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
use bitflags::bitflags;
/// `struct itimerspec` for use with [`timerfd_gettime`] and
/// [`timerfd_settime`].
///
/// [`timerfd_gettime`]: crate::time::timerfd_gettime
/// [`timerfd_settime`]: crate::time::timerfd_settime
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[cfg(not(fix_y2038))]
pub type Itimerspec = c::itimerspec;
/// `struct itimerspec` for use with [`timerfd_gettime`] and
/// [`timerfd_settime`].
///
/// [`timerfd_gettime`]: crate::time::timerfd_gettime
/// [`timerfd_settime`]: crate::time::timerfd_settime
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[cfg(fix_y2038)]
#[repr(C)]
#[derive(Debug, Clone)]
pub struct Itimerspec {
/// The interval of an interval timer.
pub it_interval: Timespec,
/// Time remaining in the current interval.
pub it_value: Timespec,
}
/// On most platforms, `LibcItimerspec` is just `Itimerspec`.
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[cfg(not(fix_y2038))]
pub(crate) type LibcItimerspec = Itimerspec;
/// On 32-bit glibc platforms, `LibcTimespec` differs from `Timespec`, so we
/// define our own struct, with bidirectional `From` impls.
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[cfg(fix_y2038)]
#[repr(C)]
#[derive(Debug, Clone)]
pub(crate) struct LibcItimerspec {
pub it_interval: LibcTimespec,
pub it_value: LibcTimespec,
}
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[cfg(fix_y2038)]
impl From<LibcItimerspec> for Itimerspec {
#[inline]
fn from(t: LibcItimerspec) -> Self {
Self {
it_interval: t.it_interval.into(),
it_value: t.it_value.into(),
}
}
}
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[cfg(fix_y2038)]
impl From<Itimerspec> for LibcItimerspec {
#[inline]
fn from(t: Itimerspec) -> Self {
Self {
it_interval: t.it_interval.into(),
it_value: t.it_value.into(),
}
}
}
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
bitflags! {
/// `TFD_*` flags for use with [`timerfd_create`].
///
/// [`timerfd_create`]: crate::time::timerfd_create
#[repr(transparent)]
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
pub struct TimerfdFlags: u32 {
/// `TFD_NONBLOCK`
#[doc(alias = "TFD_NONBLOCK")]
const NONBLOCK = bitcast!(c::TFD_NONBLOCK);
/// `TFD_CLOEXEC`
#[doc(alias = "TFD_CLOEXEC")]
const CLOEXEC = bitcast!(c::TFD_CLOEXEC);
/// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags>
const _ = !0;
}
}
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
bitflags! {
/// `TFD_TIMER_*` flags for use with [`timerfd_settime`].
///
/// [`timerfd_settime`]: crate::time::timerfd_settime
#[repr(transparent)]
#[derive(Copy, Clone, Eq, PartialEq, Hash, Debug)]
pub struct TimerfdTimerFlags: u32 {
/// `TFD_TIMER_ABSTIME`
#[doc(alias = "TFD_TIMER_ABSTIME")]
const ABSTIME = bitcast!(c::TFD_TIMER_ABSTIME);
/// `TFD_TIMER_CANCEL_ON_SET`
#[cfg(linux_kernel)]
#[doc(alias = "TFD_TIMER_CANCEL_ON_SET")]
const CANCEL_ON_SET = bitcast!(c::TFD_TIMER_CANCEL_ON_SET);
/// <https://docs.rs/bitflags/*/bitflags/#externally-defined-flags>
const _ = !0;
}
}
/// `CLOCK_*` constants for use with [`timerfd_create`].
///
/// [`timerfd_create`]: crate::time::timerfd_create
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)]
#[repr(u32)]
#[non_exhaustive]
pub enum TimerfdClockId {
/// `CLOCK_REALTIME`—A clock that tells the “real” time.
///
/// This is a clock that tells the amount of time elapsed since the Unix
/// epoch, 1970-01-01T00:00:00Z. The clock is externally settable, so it is
/// not monotonic. Successive reads may see decreasing times, so it isn't
/// reliable for measuring durations.
#[doc(alias = "CLOCK_REALTIME")]
Realtime = bitcast!(c::CLOCK_REALTIME),
/// `CLOCK_MONOTONIC`—A clock that tells an abstract time.
///
/// Unlike `Realtime`, this clock is not based on a fixed known epoch, so
/// individual times aren't meaningful. However, since it isn't settable,
/// it is reliable for measuring durations.
///
/// This clock does not advance while the system is suspended; see
/// `Boottime` for a clock that does.
#[doc(alias = "CLOCK_MONOTONIC")]
Monotonic = bitcast!(c::CLOCK_MONOTONIC),
/// `CLOCK_BOOTTIME`—Like `Monotonic`, but advances while suspended.
///
/// This clock is similar to `Monotonic`, but does advance while the system
/// is suspended.
#[doc(alias = "CLOCK_BOOTTIME")]
Boottime = bitcast!(c::CLOCK_BOOTTIME),
/// `CLOCK_REALTIME_ALARM`—Like `Realtime`, but wakes a suspended system.
///
/// This clock is like `Realtime`, but can wake up a suspended system.
///
/// Use of this clock requires the `CAP_WAKE_ALARM` Linux capability.
#[doc(alias = "CLOCK_REALTIME_ALARM")]
RealtimeAlarm = bitcast!(c::CLOCK_REALTIME_ALARM),
/// `CLOCK_BOOTTIME_ALARM`—Like `Boottime`, but wakes a suspended system.
///
/// This clock is like `Boottime`, but can wake up a suspended system.
///
/// Use of this clock requires the `CAP_WAKE_ALARM` Linux capability.
#[doc(alias = "CLOCK_BOOTTIME_ALARM")]
BoottimeAlarm = bitcast!(c::CLOCK_BOOTTIME_ALARM),
}
#[cfg(any(linux_kernel, target_os = "fuchsia"))]
#[test]
fn test_types() {
assert_eq_size!(TimerfdFlags, c::c_int);
assert_eq_size!(TimerfdTimerFlags, c::c_int);
}
|
