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use tokio::sync::mpsc; | |
use tokio::sync::oneshot; | |
extern crate rand; | |
use futures::future::FutureExt; | |
use rand::Rng; | |
async fn lmao_test() { | |
let (gtx, mut grx): ( | |
mpsc::UnboundedSender<oneshot::Sender<bool>>, | |
mpsc::UnboundedReceiver<oneshot::Sender<bool>>, | |
) = mpsc::unbounded_channel(); | |
tokio::spawn(async move { | |
let mut ctr = 0; | |
loop { | |
println!("WAITING"); | |
if let Some(i) = grx.recv().await { | |
i.send(false).unwrap(); | |
ctr += 1; | |
println!("SENT {}", ctr); | |
} else { | |
println!("FINISHED"); | |
break; | |
} | |
} | |
}); | |
let mut rng = rand::thread_rng(); | |
let t = rng.gen_range(200, 500); | |
tokio::spawn(async move { | |
let mut futs = vec![]; | |
println!("{} times", t); | |
for _ in 0..t { | |
let (tx, rx) = oneshot::channel::<bool>(); | |
gtx.send(tx).unwrap(); | |
// If you remove shared(), it works | |
futs.push(Box::pin(async move { rx.await.unwrap() }).shared()); | |
} | |
let mut ctr = 0; | |
for f in futs { | |
println!("start {}", ctr); | |
if f.await { | |
panic!("iwkms"); | |
} | |
println!("end {}", ctr); | |
ctr = ctr + 1; | |
} | |
}) | |
.await; | |
} | |
fn main() { | |
let mut rt = tokio::runtime::Builder::new() | |
.basic_scheduler() | |
.enable_all() | |
.build() | |
.unwrap(); | |
rt.block_on(async {lmao_test().await;}); | |
} |
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