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/// Test Module for checking the drop state of certain async tasks that are spawned
/// with `actix_rt::spawn`
///
/// The target task must explicitly generate `NotifyOnDrop` when spawn the task
use std::cell::RefCell;
thread_local! {
static NOTIFY_DROPPED: RefCell<Option<bool>> = RefCell::new(None);
}
/// Check if the spawned task is dropped.
///
/// # Panics
/// Panics when there was no `NotifyOnDrop` instance on current thread.
pub(crate) fn is_dropped() -> bool {
NOTIFY_DROPPED.with(|bool| {
bool.borrow()
.expect("No NotifyOnDrop existed on current thread")
})
}
pub(crate) struct NotifyOnDrop;
impl NotifyOnDrop {
/// # Panics
/// Panics hen construct multiple instances on any given thread.
pub(crate) fn new() -> Self {
NOTIFY_DROPPED.with(|bool| {
let mut bool = bool.borrow_mut();
if bool.is_some() {
panic!("NotifyOnDrop existed on current thread");
} else {
*bool = Some(false);
}
});
NotifyOnDrop
}
}
impl Drop for NotifyOnDrop {
fn drop(&mut self) {
NOTIFY_DROPPED.with(|bool| {
if let Some(b) = bool.borrow_mut().as_mut() {
*b = true;
}
});
}
}