353 lines
8.4 KiB
Rust
353 lines
8.4 KiB
Rust
|
//! Tests for the tick channel flavor.
|
||
|
|
|
||
|
|
#![cfg(not(miri))] // TODO: many assertions failed due to Miri is slow
|
||
|
|
|
||
|
|
use std::sync::atomic::AtomicUsize;
|
||
|
|
use std::sync::atomic::Ordering;
|
||
|
|
use std::thread;
|
||
|
|
use std::time::{Duration, Instant};
|
||
|
|
|
||
|
|
use crossbeam_channel::{after, select, tick, Select, TryRecvError};
|
||
|
|
use crossbeam_utils::thread::scope;
|
||
|
|
|
||
|
|
fn ms(ms: u64) -> Duration {
|
||
|
|
Duration::from_millis(ms)
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn fire() {
|
||
|
|
let start = Instant::now();
|
||
|
|
let r = tick(ms(50));
|
||
|
|
|
||
|
|
assert_eq!(r.try_recv(), Err(TryRecvError::Empty));
|
||
|
|
thread::sleep(ms(100));
|
||
|
|
|
||
|
|
let fired = r.try_recv().unwrap();
|
||
|
|
assert!(start < fired);
|
||
|
|
assert!(fired - start >= ms(50));
|
||
|
|
|
||
|
|
let now = Instant::now();
|
||
|
|
assert!(fired < now);
|
||
|
|
assert!(now - fired >= ms(50));
|
||
|
|
|
||
|
|
assert_eq!(r.try_recv(), Err(TryRecvError::Empty));
|
||
|
|
|
||
|
|
select! {
|
||
|
|
recv(r) -> _ => panic!(),
|
||
|
|
default => {}
|
||
|
|
}
|
||
|
|
|
||
|
|
select! {
|
||
|
|
recv(r) -> _ => {}
|
||
|
|
recv(tick(ms(200))) -> _ => panic!(),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn intervals() {
|
||
|
|
let start = Instant::now();
|
||
|
|
let r = tick(ms(50));
|
||
|
|
|
||
|
|
let t1 = r.recv().unwrap();
|
||
|
|
assert!(start + ms(50) <= t1);
|
||
|
|
assert!(start + ms(100) > t1);
|
||
|
|
|
||
|
|
thread::sleep(ms(300));
|
||
|
|
let t2 = r.try_recv().unwrap();
|
||
|
|
assert!(start + ms(100) <= t2);
|
||
|
|
assert!(start + ms(150) > t2);
|
||
|
|
|
||
|
|
assert_eq!(r.try_recv(), Err(TryRecvError::Empty));
|
||
|
|
let t3 = r.recv().unwrap();
|
||
|
|
assert!(start + ms(400) <= t3);
|
||
|
|
assert!(start + ms(450) > t3);
|
||
|
|
|
||
|
|
assert_eq!(r.try_recv(), Err(TryRecvError::Empty));
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn capacity() {
|
||
|
|
const COUNT: usize = 10;
|
||
|
|
|
||
|
|
for i in 0..COUNT {
|
||
|
|
let r = tick(ms(i as u64));
|
||
|
|
assert_eq!(r.capacity(), Some(1));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn len_empty_full() {
|
||
|
|
let r = tick(ms(50));
|
||
|
|
|
||
|
|
assert_eq!(r.len(), 0);
|
||
|
|
assert!(r.is_empty());
|
||
|
|
assert!(!r.is_full());
|
||
|
|
|
||
|
|
thread::sleep(ms(100));
|
||
|
|
|
||
|
|
assert_eq!(r.len(), 1);
|
||
|
|
assert!(!r.is_empty());
|
||
|
|
assert!(r.is_full());
|
||
|
|
|
||
|
|
r.try_recv().unwrap();
|
||
|
|
|
||
|
|
assert_eq!(r.len(), 0);
|
||
|
|
assert!(r.is_empty());
|
||
|
|
assert!(!r.is_full());
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn try_recv() {
|
||
|
|
let r = tick(ms(200));
|
||
|
|
assert!(r.try_recv().is_err());
|
||
|
|
|
||
|
|
thread::sleep(ms(100));
|
||
|
|
assert!(r.try_recv().is_err());
|
||
|
|
|
||
|
|
thread::sleep(ms(200));
|
||
|
|
assert!(r.try_recv().is_ok());
|
||
|
|
assert!(r.try_recv().is_err());
|
||
|
|
|
||
|
|
thread::sleep(ms(200));
|
||
|
|
assert!(r.try_recv().is_ok());
|
||
|
|
assert!(r.try_recv().is_err());
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn recv() {
|
||
|
|
let start = Instant::now();
|
||
|
|
let r = tick(ms(50));
|
||
|
|
|
||
|
|
let fired = r.recv().unwrap();
|
||
|
|
assert!(start < fired);
|
||
|
|
assert!(fired - start >= ms(50));
|
||
|
|
|
||
|
|
let now = Instant::now();
|
||
|
|
assert!(fired < now);
|
||
|
|
assert!(now - fired < fired - start);
|
||
|
|
|
||
|
|
assert_eq!(r.try_recv(), Err(TryRecvError::Empty));
|
||
|
|
}
|
||
|
|
|
||
|
|
#[cfg(not(crossbeam_sanitize))] // TODO: assertions failed due to tsan is slow
|
||
|
|
#[test]
|
||
|
|
fn recv_timeout() {
|
||
|
|
let start = Instant::now();
|
||
|
|
let r = tick(ms(200));
|
||
|
|
|
||
|
|
assert!(r.recv_timeout(ms(100)).is_err());
|
||
|
|
let now = Instant::now();
|
||
|
|
assert!(now - start >= ms(100));
|
||
|
|
assert!(now - start <= ms(150));
|
||
|
|
|
||
|
|
let fired = r.recv_timeout(ms(200)).unwrap();
|
||
|
|
assert!(fired - start >= ms(200));
|
||
|
|
assert!(fired - start <= ms(250));
|
||
|
|
|
||
|
|
assert!(r.recv_timeout(ms(100)).is_err());
|
||
|
|
let now = Instant::now();
|
||
|
|
assert!(now - start >= ms(300));
|
||
|
|
assert!(now - start <= ms(350));
|
||
|
|
|
||
|
|
let fired = r.recv_timeout(ms(200)).unwrap();
|
||
|
|
assert!(fired - start >= ms(400));
|
||
|
|
assert!(fired - start <= ms(450));
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn recv_two() {
|
||
|
|
let r1 = tick(ms(50));
|
||
|
|
let r2 = tick(ms(50));
|
||
|
|
|
||
|
|
scope(|scope| {
|
||
|
|
scope.spawn(|_| {
|
||
|
|
for _ in 0..10 {
|
||
|
|
select! {
|
||
|
|
recv(r1) -> _ => {}
|
||
|
|
recv(r2) -> _ => {}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
scope.spawn(|_| {
|
||
|
|
for _ in 0..10 {
|
||
|
|
select! {
|
||
|
|
recv(r1) -> _ => {}
|
||
|
|
recv(r2) -> _ => {}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
})
|
||
|
|
.unwrap();
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn recv_race() {
|
||
|
|
select! {
|
||
|
|
recv(tick(ms(50))) -> _ => {}
|
||
|
|
recv(tick(ms(100))) -> _ => panic!(),
|
||
|
|
}
|
||
|
|
|
||
|
|
select! {
|
||
|
|
recv(tick(ms(100))) -> _ => panic!(),
|
||
|
|
recv(tick(ms(50))) -> _ => {}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn stress_default() {
|
||
|
|
const COUNT: usize = 10;
|
||
|
|
|
||
|
|
for _ in 0..COUNT {
|
||
|
|
select! {
|
||
|
|
recv(tick(ms(0))) -> _ => {}
|
||
|
|
default => panic!(),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
for _ in 0..COUNT {
|
||
|
|
select! {
|
||
|
|
recv(tick(ms(100))) -> _ => panic!(),
|
||
|
|
default => {}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn select() {
|
||
|
|
const THREADS: usize = 4;
|
||
|
|
|
||
|
|
let hits = AtomicUsize::new(0);
|
||
|
|
let r1 = tick(ms(200));
|
||
|
|
let r2 = tick(ms(300));
|
||
|
|
|
||
|
|
scope(|scope| {
|
||
|
|
for _ in 0..THREADS {
|
||
|
|
scope.spawn(|_| {
|
||
|
|
let timeout = after(ms(1100));
|
||
|
|
loop {
|
||
|
|
let mut sel = Select::new();
|
||
|
|
let oper1 = sel.recv(&r1);
|
||
|
|
let oper2 = sel.recv(&r2);
|
||
|
|
let oper3 = sel.recv(&timeout);
|
||
|
|
let oper = sel.select();
|
||
|
|
match oper.index() {
|
||
|
|
i if i == oper1 => {
|
||
|
|
oper.recv(&r1).unwrap();
|
||
|
|
hits.fetch_add(1, Ordering::SeqCst);
|
||
|
|
}
|
||
|
|
i if i == oper2 => {
|
||
|
|
oper.recv(&r2).unwrap();
|
||
|
|
hits.fetch_add(1, Ordering::SeqCst);
|
||
|
|
}
|
||
|
|
i if i == oper3 => {
|
||
|
|
oper.recv(&timeout).unwrap();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
_ => unreachable!(),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
})
|
||
|
|
.unwrap();
|
||
|
|
|
||
|
|
assert_eq!(hits.load(Ordering::SeqCst), 8);
|
||
|
|
}
|
||
|
|
|
||
|
|
#[cfg(not(crossbeam_sanitize))] // TODO: assertions failed due to tsan is slow
|
||
|
|
#[test]
|
||
|
|
fn ready() {
|
||
|
|
const THREADS: usize = 4;
|
||
|
|
|
||
|
|
let hits = AtomicUsize::new(0);
|
||
|
|
let r1 = tick(ms(200));
|
||
|
|
let r2 = tick(ms(300));
|
||
|
|
|
||
|
|
scope(|scope| {
|
||
|
|
for _ in 0..THREADS {
|
||
|
|
scope.spawn(|_| {
|
||
|
|
let timeout = after(ms(1100));
|
||
|
|
'outer: loop {
|
||
|
|
let mut sel = Select::new();
|
||
|
|
sel.recv(&r1);
|
||
|
|
sel.recv(&r2);
|
||
|
|
sel.recv(&timeout);
|
||
|
|
loop {
|
||
|
|
match sel.ready() {
|
||
|
|
0 => {
|
||
|
|
if r1.try_recv().is_ok() {
|
||
|
|
hits.fetch_add(1, Ordering::SeqCst);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
1 => {
|
||
|
|
if r2.try_recv().is_ok() {
|
||
|
|
hits.fetch_add(1, Ordering::SeqCst);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
2 => {
|
||
|
|
if timeout.try_recv().is_ok() {
|
||
|
|
break 'outer;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
_ => unreachable!(),
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
})
|
||
|
|
.unwrap();
|
||
|
|
|
||
|
|
assert_eq!(hits.load(Ordering::SeqCst), 8);
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn fairness() {
|
||
|
|
const COUNT: usize = 30;
|
||
|
|
|
||
|
|
for &dur in &[0, 1] {
|
||
|
|
let mut hits = [0usize; 2];
|
||
|
|
|
||
|
|
for _ in 0..COUNT {
|
||
|
|
let r1 = tick(ms(dur));
|
||
|
|
let r2 = tick(ms(dur));
|
||
|
|
|
||
|
|
for _ in 0..COUNT {
|
||
|
|
select! {
|
||
|
|
recv(r1) -> _ => hits[0] += 1,
|
||
|
|
recv(r2) -> _ => hits[1] += 1,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
assert!(hits.iter().all(|x| *x >= COUNT / hits.len() / 2));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn fairness_duplicates() {
|
||
|
|
const COUNT: usize = 30;
|
||
|
|
|
||
|
|
for &dur in &[0, 1] {
|
||
|
|
let mut hits = [0usize; 5];
|
||
|
|
|
||
|
|
for _ in 0..COUNT {
|
||
|
|
let r = tick(ms(dur));
|
||
|
|
|
||
|
|
for _ in 0..COUNT {
|
||
|
|
select! {
|
||
|
|
recv(r) -> _ => hits[0] += 1,
|
||
|
|
recv(r) -> _ => hits[1] += 1,
|
||
|
|
recv(r) -> _ => hits[2] += 1,
|
||
|
|
recv(r) -> _ => hits[3] += 1,
|
||
|
|
recv(r) -> _ => hits[4] += 1,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
assert!(hits.iter().all(|x| *x >= COUNT / hits.len() / 2));
|
||
|
|
}
|
||
|
|
}
|