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Fix a bug in the timer queue due to comparison bug in embedded-time

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This commit is contained in:
Emil Fresk 2021-09-27 15:29:42 +02:00
parent 8940c50fa7
commit cdab00a0c6
1 changed files with 5 additions and 2 deletions
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7
src/tq.rs
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@ -111,7 +111,9 @@ where
mono.clear_compare_flag();
if let Some(instant) = self.0.peek().map(|p| p.instant) {
if instant <= unwrapper(Clock::try_now(mono)) {
let now = unwrapper(Clock::try_now(mono));
// This if statement is like this and not <= due to a bug in embedded-time
if instant < now || instant == now {
// task became ready
let nr = unsafe { self.0.pop_unchecked() };
@ -124,7 +126,8 @@ where
// dequeue. If the monotonic is fast enough it can happen that from the
// read of now to the set of the compare, the time can overflow. This is to
// guard against this.
if instant <= unwrapper(Clock::try_now(mono)) {
let now = unwrapper(Clock::try_now(mono));
if instant < now || instant == now {
let nr = unsafe { self.0.pop_unchecked() };
Some((nr.task, nr.index))