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time: small implementation cleanups #6517

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merged 11 commits into from
May 1, 2024
Merged

time: small implementation cleanups #6517

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bda0d8f
time: use `compare_exchange_weak` in `StateCell::mark_pending`
paolobarbolini Apr 25, 2024
47a8f06
time: use `saturating_duration_since` in `TimeSource::instant_to_tick`
paolobarbolini Apr 25, 2024
a76b09c
time: use `array::from_fn` in `Level::new`
paolobarbolini Apr 25, 2024
79559ac
time: use array instead of `Vec` in `Wheel::levels`
paolobarbolini Apr 25, 2024
2ccecf8
time: use `Try` operator in `Level::next_expiration`
paolobarbolini Apr 25, 2024
404aafc
time: use constant instead of hard-coded values
paolobarbolini Apr 25, 2024
368a4dd
time: replace by `Range` iteration with `slice::Iter` in `Wheel`
paolobarbolini Apr 25, 2024
50a9245
time: improve fmt
paolobarbolini Apr 25, 2024
8d97f9b
time: cleanup how `MAX_SAFE_MILLIS_DURATION` is calculated
paolobarbolini Apr 25, 2024
49feda1
time: use `WakeList` in `Handle::process_at_time`
paolobarbolini Apr 25, 2024
c329e01
time: drop needless `get_unchecked_mut` in `TimerEntry::poll_elapsed`
paolobarbolini Apr 25, 2024
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time: use constant instead of hard-coded values
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@paolobarbolini
paolobarbolini committed Apr 25, 2024
commit 404aafc08a4c72b2eede6d741e3d614fce7dc1c0
2 changes: 1 addition & 1 deletion tokio/src/runtime/time/wheel/level.rs
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Expand Up @@ -114,7 +114,7 @@ impl Level {
let now_slot = (now / slot_range(self.level)) as usize;
let occupied = self.occupied.rotate_right(now_slot as u32);
let zeros = occupied.trailing_zeros() as usize;
let slot = (zeros + now_slot) % 64;
let slot = (zeros + now_slot) % LEVEL_MULT;

Some(slot)
}
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2 changes: 1 addition & 1 deletion tokio/src/runtime/time/wheel/mod.rs
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Expand Up @@ -290,7 +290,7 @@ fn level_for(elapsed: u64, when: u64) -> usize {
let leading_zeros = masked.leading_zeros() as usize;
let significant = 63 - leading_zeros;

significant / 6
significant / NUM_LEVELS
}

#[cfg(all(test, not(loom)))]
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