| use super::super::c; |
| use crate::fd::BorrowedFd; |
| use bitflags::bitflags; |
| |
| /// `struct timespec` |
| pub type Timespec = linux_raw_sys::general::__kernel_timespec; |
| |
| /// A type for the `tv_sec` field of [`Timespec`]. |
| pub type Secs = linux_raw_sys::general::__kernel_time64_t; |
| |
| /// A type for the `tv_nsec` field of [`Timespec`]. |
| pub type Nsecs = i64; |
| |
| /// `struct itimerspec` for use with [`timerfd_gettime`] and |
| /// [`timerfd_settime`]. |
| /// |
| /// [`timerfd_gettime`]: crate::time::timerfd_gettime |
| /// [`timerfd_settime`]: crate::time::timerfd_settime |
| pub type Itimerspec = linux_raw_sys::general::__kernel_itimerspec; |
| |
| /// `CLOCK_*` constants for use with [`clock_gettime`]. |
| /// |
| /// These constants are always supported at runtime, so `clock_gettime` never |
| /// has to fail with `INVAL` due to an unsupported clock. See |
| /// [`DynamicClockId`] for a greater set of clocks, with the caveat that not |
| /// all of them are always supported. |
| /// |
| /// [`clock_gettime`]: crate::time::clock_gettime |
| #[derive(Debug, Copy, Clone, Eq, PartialEq, Hash)] |
| #[repr(u32)] |
| #[non_exhaustive] |
| pub enum ClockId { |
| /// `CLOCK_REALTIME` |
| Realtime = linux_raw_sys::general::CLOCK_REALTIME, |
| |
| /// `CLOCK_MONOTONIC` |
| Monotonic = linux_raw_sys::general::CLOCK_MONOTONIC, |
| |
| /// `CLOCK_PROCESS_CPUTIME_ID` |
| ProcessCPUTime = linux_raw_sys::general::CLOCK_PROCESS_CPUTIME_ID, |
| |
| /// `CLOCK_THREAD_CPUTIME_ID` |
| ThreadCPUTime = linux_raw_sys::general::CLOCK_THREAD_CPUTIME_ID, |
| |
| /// `CLOCK_REALTIME_COARSE` |
| RealtimeCoarse = linux_raw_sys::general::CLOCK_REALTIME_COARSE, |
| |
| /// `CLOCK_MONOTONIC_COARSE` |
| MonotonicCoarse = linux_raw_sys::general::CLOCK_MONOTONIC_COARSE, |
| |
| /// `CLOCK_MONOTONIC_RAW` |
| MonotonicRaw = linux_raw_sys::general::CLOCK_MONOTONIC_RAW, |
| } |
| |
| /// `CLOCK_*` constants for use with [`clock_gettime_dynamic`]. |
| /// |
| /// These constants may be unsupported at runtime, depending on the OS version, |
| /// and `clock_gettime_dynamic` may fail with `INVAL`. See [`ClockId`] for |
| /// clocks which are always supported at runtime. |
| /// |
| /// [`clock_gettime_dynamic`]: crate::time::clock_gettime_dynamic |
| #[derive(Debug, Copy, Clone)] |
| #[non_exhaustive] |
| pub enum DynamicClockId<'a> { |
| /// `ClockId` values that are always supported at runtime. |
| Known(ClockId), |
| |
| /// Linux dynamic clocks. |
| Dynamic(BorrowedFd<'a>), |
| |
| /// `CLOCK_REALTIME_ALARM`, available on Linux >= 3.0 |
| RealtimeAlarm, |
| |
| /// `CLOCK_TAI`, available on Linux >= 3.10 |
| Tai, |
| |
| /// `CLOCK_BOOTTIME`, available on Linux >= 2.6.39 |
| Boottime, |
| |
| /// `CLOCK_BOOTTIME_ALARM`, available on Linux >= 2.6.39 |
| BoottimeAlarm, |
| } |
| |
| bitflags! { |
| /// `TFD_*` flags for use with [`timerfd_create`]. |
| /// |
| /// [`timerfd_create`]: crate::time::timerfd_create |
| pub struct TimerfdFlags: c::c_uint { |
| /// `TFD_NONBLOCK` |
| const NONBLOCK = linux_raw_sys::general::TFD_NONBLOCK; |
| |
| /// `TFD_CLOEXEC` |
| const CLOEXEC = linux_raw_sys::general::TFD_CLOEXEC; |
| } |
| } |
| |
| bitflags! { |
| /// `TFD_TIMER_*` flags for use with [`timerfd_settime`]. |
| /// |
| /// [`timerfd_settime`]: crate::time::timerfd_settime |
| pub struct TimerfdTimerFlags: c::c_uint { |
| /// `TFD_TIMER_ABSTIME` |
| const ABSTIME = linux_raw_sys::general::TFD_TIMER_ABSTIME; |
| |
| /// `TFD_TIMER_CANCEL_ON_SET` |
| const CANCEL_ON_SET = linux_raw_sys::general::TFD_TIMER_CANCEL_ON_SET; |
| } |
| } |
| |
| /// `CLOCK_*` constants for use with [`timerfd_create`]. |
| /// |
| /// [`timerfd_create`]: crate::time::timerfd_create |
| #[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. |
| Realtime = linux_raw_sys::general::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. |
| Monotonic = linux_raw_sys::general::CLOCK_MONOTONIC, |
| |
| /// `CLOCK_BOOTTIME`—Like `Monotonic`, but advances while suspended. |
| /// |
| /// This clock is similar to `Monotonic`, but does advance while the system |
| /// is suspended. |
| Boottime = linux_raw_sys::general::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. |
| RealtimeAlarm = linux_raw_sys::general::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. |
| BoottimeAlarm = linux_raw_sys::general::CLOCK_BOOTTIME_ALARM, |
| } |