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Reduce timing jitter in the Metal backend

This commit is contained in:
Patrick Walton 2020-05-04 19:11:50 -07:00
parent 9ff3248e9e
commit 0545d840db
1 changed files with 4 additions and 2 deletions
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6
metal/src/lib.rs
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@ -728,13 +728,15 @@ impl Device for MetalDevice {
let captured_query = query.clone();
let start_block = ConcreteBlock::new(move |_: *mut Object, _: u64| {
let start_time = Instant::now();
let mut guard = captured_query.0.mutex.lock().unwrap();
guard.start_time = Some(Instant::now());
guard.start_time = Some(start_time);
});
let captured_query = query.clone();
let end_block = ConcreteBlock::new(move |_: *mut Object, _: u64| {
let end_time = Instant::now();
let mut guard = captured_query.0.mutex.lock().unwrap();
guard.end_time = Some(Instant::now());
guard.end_time = Some(end_time);
captured_query.0.cond.notify_all();
});
self.shared_event.notify_listener_at_value(&self.shared_event_listener,