Regression: Can't cancel multiple calls for the same plugin instance

[mhmd-azeez]

Regression: Can't cancel multiple calls for the same plugin instance

[mhmd-azeez]

I also tried to get a new handle for each cancellation:

#[test]
fn test_cancel() {
    let f = Function::new(
        "hello_world",
        [ValType::I64],
        [ValType::I64],
        UserData::default(),
        hello_world,
    );

    let mut plugin = Plugin::new(WASM_LOOP, [f], true).unwrap();
  
    for n in 0..3 {
        let handle = plugin.cancel_handle();

        let start = std::time::Instant::now();
        std::thread::spawn(move || {
            std::thread::sleep(std::time::Duration::from_secs(1));
            assert!(handle.cancel().is_ok());
        });
        let _output: Result<&[u8], Error> = plugin.call("loop_forever", "abc123");
        let end = std::time::Instant::now();
        let time = end - start;
        println!("Cancelled plugin ran for {:?}", time);
    }
    // std::io::stdout().write_all(output).unwrap();
}

this didn't fix the issue either