| // Copyright 2017 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| use time::Duration; |
| use sys::{TimeSysCall, TimeClock}; |
| |
| #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)] |
| pub struct Instant(Duration); |
| |
| #[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)] |
| pub struct SystemTime(Duration); |
| |
| pub const UNIX_EPOCH: SystemTime = SystemTime(Duration::from_secs(0)); |
| |
| impl Instant { |
| pub fn now() -> Instant { |
| Instant(TimeSysCall::perform(TimeClock::Monotonic)) |
| } |
| |
| pub fn sub_instant(&self, other: &Instant) -> Duration { |
| self.0 - other.0 |
| } |
| |
| pub fn checked_add_duration(&self, other: &Duration) -> Option<Instant> { |
| Some(Instant(self.0.checked_add(*other)?)) |
| } |
| |
| pub fn checked_sub_duration(&self, other: &Duration) -> Option<Instant> { |
| Some(Instant(self.0.checked_sub(*other)?)) |
| } |
| } |
| |
| impl SystemTime { |
| pub fn now() -> SystemTime { |
| SystemTime(TimeSysCall::perform(TimeClock::System)) |
| } |
| |
| pub fn sub_time(&self, other: &SystemTime) |
| -> Result<Duration, Duration> { |
| self.0.checked_sub(other.0).ok_or_else(|| other.0 - self.0) |
| } |
| |
| pub fn checked_add_duration(&self, other: &Duration) -> Option<SystemTime> { |
| Some(SystemTime(self.0.checked_add(*other)?)) |
| } |
| |
| pub fn checked_sub_duration(&self, other: &Duration) -> Option<SystemTime> { |
| Some(SystemTime(self.0.checked_sub(*other)?)) |
| } |
| } |