diff options
Diffstat (limited to 'library/std/src/sys/windows/thread.rs')
| -rw-r--r-- | library/std/src/sys/windows/thread.rs | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/library/std/src/sys/windows/thread.rs b/library/std/src/sys/windows/thread.rs index 4b825d2a9f5..1fe74493519 100644 --- a/library/std/src/sys/windows/thread.rs +++ b/library/std/src/sys/windows/thread.rs @@ -12,6 +12,7 @@ use crate::time::Duration; use core::ffi::c_void; +use super::time::WaitableTimer; use super::to_u16s; pub const DEFAULT_MIN_STACK_SIZE: usize = 2 * 1024 * 1024; @@ -87,7 +88,17 @@ impl Thread { } pub fn sleep(dur: Duration) { - unsafe { c::Sleep(super::dur2timeout(dur)) } + fn high_precision_sleep(dur: Duration) -> Result<(), ()> { + let timer = WaitableTimer::high_resolution()?; + timer.set(dur)?; + timer.wait() + } + // Attempt to use high-precision sleep (Windows 10, version 1803+). + // On error fallback to the standard `Sleep` function. + // Also preserves the zero duration behaviour of `Sleep`. + if dur.is_zero() || high_precision_sleep(dur).is_err() { + unsafe { c::Sleep(super::dur2timeout(dur)) } + } } pub fn handle(&self) -> &Handle { |