Update futures-timer to 3.0.2 #739
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I didn't check before creating a PR. Another PR for this is already open #738 |
k-nasa
reviewed
Mar 31, 2020
Comment on lines
-95
to
-113
| fn next_interval(prev: Instant, now: Instant, interval: Duration) -> Instant { | ||
| let new = prev + interval; | ||
| if new > now { | ||
| return new; | ||
| } | ||
|
|
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| let spent_ns = duration_to_nanos(now.duration_since(prev)).expect("interval should be expired"); | ||
| let interval_ns = | ||
| duration_to_nanos(interval).expect("interval is less that 427 thousand years"); | ||
| let mult = spent_ns / interval_ns + 1; | ||
| assert!( | ||
| mult < (1 << 32), | ||
| "can't skip more than 4 billion intervals of {:?} \ | ||
| (trying to skip {})", | ||
| interval, | ||
| mult | ||
| ); | ||
| prev + interval * (mult as u32) | ||
| } |
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I don't understand this logic, but is it safe to remove it?
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Yes. The logic is quite complex and there is not much documentation for next_interval function. But, as the name suggests, it is trying to find the next Instant to update the Delay with. As the new version of Delay already takes Duration as argument, we don't have to go through that complex logic to find the next Instant.
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