Решение на упр.11 задача 1 от Димитър Николов

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Към профила на Димитър Николов

Код

use std::io::Write;

use std::time::Duration;

use tokio::task::JoinSet;

use tokio::time::{sleep, timeout};

const TASK_SLEEP_TIMEOUT: Duration = Duration::from_millis(800);

async fn run_task(id: usize, duration: Duration) -> Result<String, String> {

timeout(TASK_SLEEP_TIMEOUT, sleep(duration))

.await

.map(|_| format!("Task {} finished in {} ms", id, duration.as_millis()))

.map_err(|_| format!("Task {} timed out", id))

}

async fn manage_tasks(task_infos: &[(usize, Duration)], w: &mut dyn Write) {

let mut tasks = JoinSet::new();

let mut successful = 0;

let mut failed = 0;

for task in task_infos {

let task = task.clone();

tasks.spawn(run_task(task.0, task.1));

}

while let Some(result) = tasks.join_next().await {

let Ok(result) = result else {

failed += 1;

continue;

};

match result {

Ok(ok) => {

successful += 1;

let _ = writeln!(w, "{}", ok);

}

Err(err) => {

failed += 1;

let _ = writeln!(w, "{}", err);

}

};

}

let _ = writeln!(w, "Successful tasks: {}", successful);

let _ = writeln!(w, "Failed tasks: {}", failed);

}

Лог от изпълнението

Updating crates.io index
     Locking 46 packages to latest compatible versions
   Compiling proc-macro2 v1.0.104
   Compiling unicode-ident v1.0.22
   Compiling quote v1.0.42
   Compiling libc v0.2.178
   Compiling syn v2.0.111
   Compiling futures-sink v0.3.31
   Compiling parking_lot_core v0.9.12
   Compiling pin-project-lite v0.2.16
   Compiling futures-core v0.3.31
   Compiling futures-channel v0.3.31
   Compiling pin-utils v0.1.0
   Compiling smallvec v1.15.1
   Compiling cfg-if v1.0.4
   Compiling futures-io v0.3.31
   Compiling scopeguard v1.2.0
   Compiling slab v0.4.11
   Compiling memchr v2.7.6
   Compiling futures-task v0.3.31
   Compiling lock_api v0.4.14
   Compiling errno v0.3.14
   Compiling signal-hook-registry v1.4.8
   Compiling parking_lot v0.12.5
   Compiling mio v1.1.1
   Compiling futures-macro v0.3.31
   Compiling tokio-macros v2.6.0
   Compiling socket2 v0.6.1
   Compiling futures-util v0.3.31
   Compiling bytes v1.11.0
   Compiling tokio v1.48.0
   Compiling futures-executor v0.3.31
   Compiling futures v0.3.31
   Compiling solution v0.1.0 (/tmp/d20251228-4108951-1d5mvhz/solution)
warning: constant `TASK_SLEEP_TIMEOUT` is never used
 --> src/lib.rs:7:7
  |
7 | const TASK_SLEEP_TIMEOUT: Duration = Duration::from_millis(800);
  |       ^^^^^^^^^^^^^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: function `run_task` is never used
 --> src/lib.rs:9:10
  |
9 | async fn run_task(id: usize, duration: Duration) -> Result<String, String> {
  |          ^^^^^^^^

warning: function `manage_tasks` is never used
  --> src/lib.rs:16:10
   |
16 | async fn manage_tasks(task_infos: &[(usize, Duration)], w: &mut dyn Write) {
   |          ^^^^^^^^^^^^

warning: `solution` (lib) generated 3 warnings
    Finished `test` profile [unoptimized + debuginfo] target(s) in 17.99s
     Running tests/solution_test.rs (target/debug/deps/solution_test-f512224d9fb3caf8)

running 1 test
test solution_test::test_basic ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.80s

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