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feat: Cache system time instead of looking at the clock several times in a row

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The system clock may be adjusted and even go back, so caching system time in code sections where
it's not supposed to change may even protect from races/bugs.
This commit is contained in:
iequidoo
2023-12-14 20:50:30 -03:00
committed by iequidoo
parent 31ee3feb57
commit fe3c1f69c3
5 changed files with 32 additions and 15 deletions
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10
src/contact.rs
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@@ -1732,6 +1732,12 @@ impl RecentlySeenLoop {
async fn run(context: Context, interrupt: Receiver<RecentlySeenInterrupt>) {
type MyHeapElem = (Reverse<i64>, ContactId);
let now = SystemTime::now();
let now_ts = now
.duration_since(SystemTime::UNIX_EPOCH)
.unwrap_or_default()
.as_secs() as i64;
// Priority contains all recently seen sorted by the timestamp
// when they become not recently seen.
//
@@ -1742,7 +1748,7 @@ impl RecentlySeenLoop {
.query_map(
"SELECT id, last_seen FROM contacts
WHERE last_seen > ?",
(time() - SEEN_RECENTLY_SECONDS,),
(now_ts - SEEN_RECENTLY_SECONDS,),
|row| {
let contact_id: ContactId = row.get("id")?;
let last_seen: i64 = row.get("last_seen")?;
@@ -1757,8 +1763,6 @@ impl RecentlySeenLoop {
.unwrap_or_default();
loop {
let now = SystemTime::now();
let (until, contact_id) =
if let Some((Reverse(timestamp), contact_id)) = unseen_queue.peek() {
(