split time utils into unit

Signed-off-by: Jason Volk <jason@zemos.net>

src/core/utils/mod.rs

@@ -9,11 +9,9 @@ pub mod mutex_map;
 pub mod string;
 pub mod sys;
 mod tests;
+pub mod time;
 
-use std::{
-	cmp::{self, Ordering},
-	time::{SystemTime, UNIX_EPOCH},
-};
+use std::cmp::{self, Ordering};
 
 pub use bytes::{increment, u64_from_bytes, u64_from_u8, u64_from_u8x8};
 pub use debug::slice_truncated as debug_slice_truncated;
@@ -23,6 +21,7 @@ pub use json::{deserialize_from_str, to_canonical_object};
 pub use mutex_map::MutexMap;
 pub use string::{random_string, str_from_bytes, string_from_bytes};
 pub use sys::available_parallelism;
+pub use time::millis_since_unix_epoch;
 
 use crate::Result;
 
@@ -40,15 +39,6 @@ pub fn unwrap_infallible<T>(result: Result<T, std::convert::Infallible>) -> T {
 	}
 }
 
-#[must_use]
-#[allow(clippy::as_conversions)]
-pub fn millis_since_unix_epoch() -> u64 {
-	SystemTime::now()
-		.duration_since(UNIX_EPOCH)
-		.expect("time is valid")
-		.as_millis() as u64
-}
-
 #[must_use]
 pub fn generate_keypair() -> Vec<u8> {
 	let mut value = random_string(8).as_bytes().to_vec();

src/core/utils/time.rs

@@ -0,0 +1,11 @@
+use std::time::{SystemTime, UNIX_EPOCH};
+
+#[inline]
+#[must_use]
+#[allow(clippy::as_conversions)]
+pub fn millis_since_unix_epoch() -> u64 {
+	SystemTime::now()
+		.duration_since(UNIX_EPOCH)
+		.expect("time is valid")
+		.as_millis() as u64
+}