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time: use intrusive lists for timer tracking (#3080)

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More-or-less a half-rewrite of the current time driver, supporting the
use of intrusive futures for timer registration.

Fixes: #3028, #3069
This commit is contained in:
bdonlan
2020-11-23 10:42:50 -08:00
committed by GitHub
parent f927f01a34
commit ae67851f11
28 changed files with 1558 additions and 919 deletions
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tokio-util/tests/time_delay_queue.rs
+15 -9
View File
@@ -2,7 +2,7 @@
#![warn(rust_2018_idioms)]
#![cfg(feature = "full")]
use tokio::time::{self, sleep, Duration, Instant};
use tokio::time::{self, sleep, sleep_until, Duration, Instant};
use tokio_test::{assert_ok, assert_pending, assert_ready, task};
use tokio_util::time::DelayQueue;
@@ -107,9 +107,10 @@ async fn multi_delay_at_start() {
assert_pending!(poll!(queue));
assert!(!queue.is_woken());
let start = Instant::now();
for elapsed in 0..1200 {
sleep(ms(1)).await;
let elapsed = elapsed + 1;
tokio::time::sleep_until(start + ms(elapsed)).await;
if delays.contains(&elapsed) {
assert!(queue.is_woken());
@@ -117,7 +118,12 @@ async fn multi_delay_at_start() {
assert_pending!(poll!(queue));
} else if queue.is_woken() {
let cascade = &[192, 960];
assert!(cascade.contains(&elapsed), "elapsed={}", elapsed);
assert!(
cascade.contains(&elapsed),
"elapsed={} dt={:?}",
elapsed,
Instant::now() - start
);
assert_pending!(poll!(queue));
}
@@ -205,7 +211,7 @@ async fn reset_much_later() {
sleep(ms(3)).await;
queue.reset_at(&key, now + ms(5));
queue.reset_at(&key, now + ms(10));
sleep(ms(20)).await;
@@ -402,7 +408,7 @@ async fn insert_before_first_after_poll() {
sleep(ms(99)).await;
assert!(!queue.is_woken());
assert_pending!(poll!(queue));
sleep(ms(1)).await;
@@ -457,7 +463,7 @@ async fn reset_later_after_slot_starts() {
assert_pending!(poll!(queue));
sleep(ms(80)).await;
sleep_until(now + Duration::from_millis(80)).await;
assert!(!queue.is_woken());
@@ -472,7 +478,7 @@ async fn reset_later_after_slot_starts() {
assert_pending!(poll!(queue));
sleep(ms(39)).await;
sleep_until(now + Duration::from_millis(119)).await;
assert!(!queue.is_woken());
sleep(ms(1)).await;
@@ -515,7 +521,7 @@ async fn reset_earlier_after_slot_starts() {
assert_pending!(poll!(queue));
sleep(ms(80)).await;
sleep_until(now + Duration::from_millis(80)).await;
assert!(!queue.is_woken());
@@ -530,7 +536,7 @@ async fn reset_earlier_after_slot_starts() {
assert_pending!(poll!(queue));
sleep(ms(39)).await;
sleep_until(now + Duration::from_millis(119)).await;
assert!(!queue.is_woken());
sleep(ms(1)).await;