Struct Canceller

Source

pub struct Canceller { /* private fields */ }

Expand description

An object that allows cancelling the associated Timer.

Implementations§

Source §

impl Canceller

Source

pub fn cancel(&self) -> Result<()>

Cancel the associated Timer.

Examples found in repository ?

examples/example2.rs (line 23)

5fn main() {
6    let callback = |status: io::Result<()>| match status {
7        Ok(_) => println!("Called"),
8        Err(ref e) if e.kind() == io::ErrorKind::Interrupted => println!("Cancelled"),
9        Err(e) => eprintln!("Error: {:?}", e),
10    };
11
12    println!("Run callback after 2s");
13    Timer::after(Duration::from_secs(2), callback).unwrap();
14
15    println!("Wait 4s");
16    std::thread::sleep(Duration::from_secs(4));
17
18    println!("Run callback after 4s");
19    let canceller = Timer::after(Duration::from_secs(4), callback).unwrap();
20
21    std::thread::sleep(Duration::from_secs(2));
22    println!("Cancel timer.");
23    canceller.cancel().unwrap();
24
25    std::thread::sleep(Duration::from_secs(3));
26}

More examples

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examples/example1.rs (line 13)

5fn main() {
6    let (mut timer, canceller) = Timer::new2().unwrap();
7
8    println!("Wait 2s, uninterrupted.");
9    let r = timer.sleep(Duration::from_secs(2));
10    println!("Done: {:?}", r);
11
12    println!("Wait 2s, cancelled at once.");
13    canceller.cancel().unwrap();
14    let r = timer.sleep(Duration::from_secs(2));
15    println!("Done {:?}", r);
16
17    println!("Wait 2s, not cancelled.");
18    let r = timer.sleep(Duration::from_secs(2));
19    println!("Done {:?}", r);
20
21    println!("Wait 10s, cancel after 2s");
22    let canceller2 = canceller.clone();
23    std::thread::spawn(move || {
24        std::thread::sleep(Duration::from_secs(2));
25        canceller2.cancel().unwrap();
26    });
27    match timer.sleep(Duration::from_secs(10)) {
28        Err(ref e) if e.kind() == io::ErrorKind::Interrupted => println!("Cancelled"),
29        x => panic!("{:?}", x),
30    };
31}