e8af1a1812
- Vendor coarsetime crate with portable-atomic fallback - Use portable-atomic on targets without 64-bit atomics - Patch crates.io to use local coarsetime - Fixes MIPS build failure (AtomicU64 missing)
94 lines
2.4 KiB
Rust
94 lines
2.4 KiB
Rust
#[cfg(not(all(
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any(target_arch = "wasm32", target_arch = "wasm64"),
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target_os = "unknown"
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)))]
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use std::time;
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#[cfg(target_has_atomic = "64")]
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use std::sync::atomic::{AtomicU64, Ordering};
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#[cfg(not(target_has_atomic = "64"))]
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use portable_atomic::{AtomicU64, Ordering};
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use super::Duration;
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static RECENT: AtomicU64 = AtomicU64::new(0);
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#[cfg(all(
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any(target_arch = "wasm32", target_arch = "wasm64"),
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target_os = "unknown"
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))]
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mod js_imports {
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use wasm_bindgen::prelude::*;
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#[wasm_bindgen]
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extern "C" {
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pub type Date;
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#[wasm_bindgen(static_method_of = Date)]
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pub fn now() -> f64;
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}
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}
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/// System time
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#[derive(Debug)]
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pub struct Clock;
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/// Alias for `Duration`.
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pub type UnixTimeStamp = Duration;
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impl Clock {
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/// Returns the elapsed time since the UNIX epoch
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#[inline]
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pub fn now_since_epoch() -> UnixTimeStamp {
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Duration::from_u64(unix_ts())
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}
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/// Returns the elapsed time since the UNIX epoch, based on the latest
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/// explicit time update
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#[inline]
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pub fn recent_since_epoch() -> UnixTimeStamp {
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Duration::from_u64(RECENT.load(Ordering::Relaxed))
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}
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/// Updates the cached system time.
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///
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/// This function should be called frequently, for example in an event loop
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/// or using an `Updater` task.
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#[inline]
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pub fn update() {
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let now = unix_ts();
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RECENT.store(now, Ordering::Relaxed)
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}
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/// Sets the cached system time to the specified timestamp.
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/// This function is intended for testing purposes only.
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/// It should not be used in production code.
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pub fn set_recent_since_epoch(recent: UnixTimeStamp) {
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RECENT.store(recent.as_u64(), Ordering::Relaxed)
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}
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}
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#[cfg(all(
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any(target_arch = "wasm32", target_arch = "wasm64"),
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target_os = "unknown"
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))]
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#[inline]
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fn unix_ts() -> u64 {
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let unix_ts_now_sys = (js_imports::Date::now() / 1000.0).round() as u64;
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let unix_ts_now = Duration::from_secs(unix_ts_now_sys);
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unix_ts_now.as_u64()
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}
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#[cfg(not(all(
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any(target_arch = "wasm32", target_arch = "wasm64"),
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target_os = "unknown"
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)))]
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#[inline]
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fn unix_ts() -> u64 {
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let unix_ts_now_sys = time::SystemTime::now()
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.duration_since(time::UNIX_EPOCH)
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.expect("The system clock is not properly set");
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let unix_ts_now = Duration::from(unix_ts_now_sys);
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unix_ts_now.as_u64()
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}
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