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time/generic_queue: use Vec instead of SortedLinkedList

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This commit is contained in:
Dario Nieuwenhuis 2022-10-26 21:00:50 +02:00
parent 4976cbbe60
commit f9da6271ce
1 changed files with 22 additions and 24 deletions
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46
embassy-time/src/queue_generic.rs
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@ -4,7 +4,7 @@ use core::task::Waker;
use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
use embassy_sync::blocking_mutex::Mutex;
use heapless::sorted_linked_list::{LinkedIndexU8, Min, SortedLinkedList};
use heapless::Vec;
use crate::driver::{allocate_alarm, set_alarm, set_alarm_callback, AlarmHandle};
use crate::queue::TimerQueue;
@ -56,18 +56,17 @@ impl Ord for Timer {
}
struct InnerQueue {
queue: SortedLinkedList<Timer, LinkedIndexU8, Min, { QUEUE_SIZE }>,
queue: Vec<Timer, QUEUE_SIZE>,
alarm: AlarmHandle,
alarm_at: Instant,
}
impl InnerQueue {
fn schedule_wake(&mut self, at: Instant, waker: &Waker) {
self.queue
.find_mut(|timer| timer.waker.will_wake(waker))
.iter_mut()
.find(|timer| timer.waker.will_wake(waker))
.map(|mut timer| {
timer.at = min(timer.at, at);
timer.finish();
})
.unwrap_or_else(|| {
let mut timer = Timer {
@ -96,35 +95,35 @@ impl InnerQueue {
loop {
let now = Instant::now();
while self.queue.peek().filter(|timer| timer.at <= now).is_some() {
self.queue.pop().unwrap().waker.wake();
let mut next_alarm = Instant::MAX;
let mut i = 0;
while i < self.queue.len() {
let timer = &self.queue[i];
if timer.at <= now {
let timer = self.queue.swap_remove(i);
timer.waker.wake();
} else {
next_alarm = min(next_alarm, timer.at);
i += 1;
}
}
if self.update_alarm() {
if self.update_alarm(next_alarm) {
break;
}
}
}
fn update_alarm(&mut self) -> bool {
if let Some(timer) = self.queue.peek() {
let new_at = timer.at;
if self.alarm_at != new_at {
self.alarm_at = new_at;
return set_alarm(self.alarm, self.alarm_at.as_ticks());
}
fn update_alarm(&mut self, next_alarm: Instant) -> bool {
if next_alarm == Instant::MAX {
true
} else {
self.alarm_at = Instant::MAX;
set_alarm(self.alarm, next_alarm.as_ticks())
}
true
}
fn handle_alarm(&mut self) {
self.alarm_at = Instant::MAX;
self.dispatch();
}
}
@ -151,9 +150,8 @@ impl Queue {
let handle = unsafe { allocate_alarm() }.unwrap();
set_alarm_callback(handle, Self::handle_alarm_callback, self as *const _ as _);
InnerQueue {
queue: SortedLinkedList::new_u8(),
queue: Vec::new(),
alarm: handle,
alarm_at: Instant::MAX,
}
})
.schedule_wake(at, waker)