async_drop_guard/
async_drop.rs

1use async_trait::async_trait;
2use std::fmt::Debug;
3
4/// Implement this trait to define an async drop behavior for your
5/// type. See [AsyncDropGuard] for more details.
6#[async_trait]
7pub trait AsyncDrop {
8    type Error: Debug;
9
10    /// Implement this to define drop behavior for your type.
11    /// This will be called whenever [AsyncDropGuard::async_drop] is executed
12    /// while wrapping a value of the type implementing [AsyncDrop].
13    ///
14    /// If the implementing type also implements [Drop], then [Drop::drop]
15    /// will be executed synchronously and after [AsyncDrop::async_drop_impl].
16    ///
17    /// [AsyncDrop::async_drop_impl] can return an error and that error
18    /// will be propagated to the caller of [AsyncDropGuard::async_drop_impl].
19    /// If such an error happens, [Drop::drop] still gets executed.
20    async fn async_drop_impl(&mut self) -> Result<(), Self::Error>;
21}
async_drop_guard/async_drop.rs

async_drop_guard/
async_drop.rs
