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Don't call Duration::new unnecessarily in Duration::from_secs

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Noa 2024-05-17 14:26:50 -05:00
parent c7716d5431
commit 35522a9e09
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1 changed files with 7 additions and 3 deletions
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10
library/core/src/time.rs
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@ -43,11 +43,15 @@ const DAYS_PER_WEEK: u64 = 7;
#[rustc_layout_scalar_valid_range_end(999_999_999)] #[rustc_layout_scalar_valid_range_end(999_999_999)]
struct Nanoseconds(u32); struct Nanoseconds(u32);
impl Nanoseconds {
// SAFETY: 0 is within the valid range
const ZERO: Self = unsafe { Nanoseconds(0) };
}
impl Default for Nanoseconds { impl Default for Nanoseconds {
#[inline] #[inline]
fn default() -> Self { fn default() -> Self {
// SAFETY: 0 is within the valid range Self::ZERO
unsafe { Nanoseconds(0) }
} }
} }
@ -236,7 +240,7 @@ impl Duration {
#[inline] #[inline]
#[rustc_const_stable(feature = "duration_consts", since = "1.32.0")] #[rustc_const_stable(feature = "duration_consts", since = "1.32.0")]
pub const fn from_secs(secs: u64) -> Duration { pub const fn from_secs(secs: u64) -> Duration {
Duration::new(secs, 0) Duration { secs, nanos: Nanoseconds::ZERO }
} }
/// Creates a new `Duration` from the specified number of milliseconds. /// Creates a new `Duration` from the specified number of milliseconds.