1 files changed, 0 insertions, 228 deletions
diff --git a/src/libstd/sys/windows/time.rs b/src/libstd/sys/windows/time.rs
deleted file mode 100644
index 900260169c7..00000000000
--- a/src/libstd/sys/windows/time.rs
+++ /dev/null
@@ -1,228 +0,0 @@
-use crate::cmp::Ordering;
-use crate::convert::TryInto;
-use crate::fmt;
-use crate::mem;
-use crate::sys::c;
-use crate::time::Duration;
-
-use core::hash::{Hash, Hasher};
-
-const NANOS_PER_SEC: u64 = 1_000_000_000;
-const INTERVALS_PER_SEC: u64 = NANOS_PER_SEC / 100;
-
-#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Debug, Hash)]
-pub struct Instant {
-    // This duration is relative to an arbitrary microsecond epoch
-    // from the winapi QueryPerformanceCounter function.
-    t: Duration,
-}
-
-#[derive(Copy, Clone)]
-pub struct SystemTime {
-    t: c::FILETIME,
-}
-
-const INTERVALS_TO_UNIX_EPOCH: u64 = 11_644_473_600 * INTERVALS_PER_SEC;
-
-pub const UNIX_EPOCH: SystemTime = SystemTime {
-    t: c::FILETIME {
-        dwLowDateTime: INTERVALS_TO_UNIX_EPOCH as u32,
-        dwHighDateTime: (INTERVALS_TO_UNIX_EPOCH >> 32) as u32,
-    },
-};
-
-impl Instant {
-    pub fn now() -> Instant {
-        // High precision timing on windows operates in "Performance Counter"
-        // units, as returned by the WINAPI QueryPerformanceCounter function.
-        // These relate to seconds by a factor of QueryPerformanceFrequency.
-        // In order to keep unit conversions out of normal interval math, we
-        // measure in QPC units and immediately convert to nanoseconds.
-        perf_counter::PerformanceCounterInstant::now().into()
-    }
-
-    pub fn actually_monotonic() -> bool {
-        false
-    }
-
-    pub const fn zero() -> Instant {
-        Instant { t: Duration::from_secs(0) }
-    }
-
-    pub fn checked_sub_instant(&self, other: &Instant) -> Option<Duration> {
-        // On windows there's a threshold below which we consider two timestamps
-        // equivalent due to measurement error. For more details + doc link,
-        // check the docs on epsilon.
-        let epsilon = perf_counter::PerformanceCounterInstant::epsilon();
-        if other.t > self.t && other.t - self.t <= epsilon {
-            Some(Duration::new(0, 0))
-        } else {
-            self.t.checked_sub(other.t)
-        }
-    }
-
-    pub fn checked_add_duration(&self, other: &Duration) -> Option<Instant> {
-        Some(Instant { t: self.t.checked_add(*other)? })
-    }
-
-    pub fn checked_sub_duration(&self, other: &Duration) -> Option<Instant> {
-        Some(Instant { t: self.t.checked_sub(*other)? })
-    }
-}
-
-impl SystemTime {
-    pub fn now() -> SystemTime {
-        unsafe {
-            let mut t: SystemTime = mem::zeroed();
-            c::GetSystemTimePreciseAsFileTime(&mut t.t);
-            t
-        }
-    }
-
-    fn from_intervals(intervals: i64) -> SystemTime {
-        SystemTime {
-            t: c::FILETIME {
-                dwLowDateTime: intervals as c::DWORD,
-                dwHighDateTime: (intervals >> 32) as c::DWORD,
-            },
-        }
-    }
-
-    fn intervals(&self) -> i64 {
-        (self.t.dwLowDateTime as i64) | ((self.t.dwHighDateTime as i64) << 32)
-    }
-
-    pub fn sub_time(&self, other: &SystemTime) -> Result<Duration, Duration> {
-        let me = self.intervals();
-        let other = other.intervals();
-        if me >= other {
-            Ok(intervals2dur((me - other) as u64))
-        } else {
-            Err(intervals2dur((other - me) as u64))
-        }
-    }
-
-    pub fn checked_add_duration(&self, other: &Duration) -> Option<SystemTime> {
-        let intervals = self.intervals().checked_add(checked_dur2intervals(other)?)?;
-        Some(SystemTime::from_intervals(intervals))
-    }
-
-    pub fn checked_sub_duration(&self, other: &Duration) -> Option<SystemTime> {
-        let intervals = self.intervals().checked_sub(checked_dur2intervals(other)?)?;
-        Some(SystemTime::from_intervals(intervals))
-    }
-}
-
-impl PartialEq for SystemTime {
-    fn eq(&self, other: &SystemTime) -> bool {
-        self.intervals() == other.intervals()
-    }
-}
-
-impl Eq for SystemTime {}
-
-impl PartialOrd for SystemTime {
-    fn partial_cmp(&self, other: &SystemTime) -> Option<Ordering> {
-        Some(self.cmp(other))
-    }
-}
-
-impl Ord for SystemTime {
-    fn cmp(&self, other: &SystemTime) -> Ordering {
-        self.intervals().cmp(&other.intervals())
-    }
-}
-
-impl fmt::Debug for SystemTime {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        f.debug_struct("SystemTime").field("intervals", &self.intervals()).finish()
-    }
-}
-
-impl From<c::FILETIME> for SystemTime {
-    fn from(t: c::FILETIME) -> SystemTime {
-        SystemTime { t }
-    }
-}
-
-impl Hash for SystemTime {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        self.intervals().hash(state)
-    }
-}
-
-fn checked_dur2intervals(dur: &Duration) -> Option<i64> {
-    dur.as_secs()
-        .checked_mul(INTERVALS_PER_SEC)?
-        .checked_add(dur.subsec_nanos() as u64 / 100)?
-        .try_into()
-        .ok()
-}
-
-fn intervals2dur(intervals: u64) -> Duration {
-    Duration::new(intervals / INTERVALS_PER_SEC, ((intervals % INTERVALS_PER_SEC) * 100) as u32)
-}
-
-mod perf_counter {
-    use super::NANOS_PER_SEC;
-    use crate::sync::atomic::{AtomicUsize, Ordering::SeqCst};
-    use crate::sys::c;
-    use crate::sys::cvt;
-    use crate::sys_common::mul_div_u64;
-    use crate::time::Duration;
-
-    pub struct PerformanceCounterInstant {
-        ts: c::LARGE_INTEGER,
-    }
-    impl PerformanceCounterInstant {
-        pub fn now() -> Self {
-            Self { ts: query() }
-        }
-
-        // Per microsoft docs, the margin of error for cross-thread time comparisons
-        // using QueryPerformanceCounter is 1 "tick" -- defined as 1/frequency().
-        // Reference: https://docs.microsoft.com/en-us/windows/desktop/SysInfo
-        //                   /acquiring-high-resolution-time-stamps
-        pub fn epsilon() -> Duration {
-            let epsilon = NANOS_PER_SEC / (frequency() as u64);
-            Duration::from_nanos(epsilon)
-        }
-    }
-    impl From<PerformanceCounterInstant> for super::Instant {
-        fn from(other: PerformanceCounterInstant) -> Self {
-            let freq = frequency() as u64;
-            let instant_nsec = mul_div_u64(other.ts as u64, NANOS_PER_SEC, freq);
-            Self { t: Duration::from_nanos(instant_nsec) }
-        }
-    }
-
-    fn frequency() -> c::LARGE_INTEGER {
-        static mut FREQUENCY: c::LARGE_INTEGER = 0;
-        static STATE: AtomicUsize = AtomicUsize::new(0);
-
-        unsafe {
-            // If a previous thread has filled in this global state, use that.
-            if STATE.load(SeqCst) == 2 {
-                return FREQUENCY;
-            }
-
-            // ... otherwise learn for ourselves ...
-            let mut frequency = 0;
-            cvt(c::QueryPerformanceFrequency(&mut frequency)).unwrap();
-
-            // ... and attempt to be the one thread that stores it globally for
-            // all other threads
-            if STATE.compare_exchange(0, 1, SeqCst, SeqCst).is_ok() {
-                FREQUENCY = frequency;
-                STATE.store(2, SeqCst);
-            }
-            frequency
-        }
-    }
-
-    fn query() -> c::LARGE_INTEGER {
-        let mut qpc_value: c::LARGE_INTEGER = 0;
-        cvt(unsafe { c::QueryPerformanceCounter(&mut qpc_value) }).unwrap();
-        qpc_value
-    }
-}