| 1 | // Copyright 2016 Amanieu d'Antras |
| 2 | // |
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| 3 | // Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or |
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| 4 | // http://apache.org/licenses/LICENSE-2.0> or the MIT license <LICENSE-MIT or |
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| 5 | // http://opensource.org/licenses/MIT>, at your option. This file may not be |
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| 6 | // copied, modified, or distributed except according to those terms. |
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| 7 | |
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| 8 | use std::time::{Duration, Instant}; |
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| 9 | |
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| 10 | // Option::unchecked_unwrap |
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| 11 | pub trait UncheckedOptionExt<T> { |
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| 12 | unsafe fn unchecked_unwrap(self) -> T; |
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| 13 | } |
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| 14 | |
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| 15 | impl<T> UncheckedOptionExt<T> for Option<T> { |
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| 16 | #[inline ] |
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| 17 | unsafe fn unchecked_unwrap(self) -> T { |
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| 18 | match self { |
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| 19 | Some(x) => x, |
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| 20 | None => unreachable(), |
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| 21 | } |
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| 22 | } |
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| 23 | } |
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| 24 | |
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| 25 | // hint::unreachable_unchecked() in release mode |
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| 26 | #[inline ] |
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| 27 | unsafe fn unreachable() -> ! { |
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| 28 | if cfg!(debug_assertions) { |
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| 29 | unreachable!(); |
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| 30 | } else { |
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| 31 | core::hint::unreachable_unchecked() |
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| 32 | } |
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| 33 | } |
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| 34 | |
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| 35 | #[inline ] |
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| 36 | pub fn to_deadline(timeout: Duration) -> Option<Instant> { |
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| 37 | Instant::now().checked_add(timeout) |
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| 38 | } |
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| 39 | |
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