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use std::{future::Future, io};
use monoio::BufResult;
use reusable_box_future::ReusableLocalBoxFuture;
use crate::buf::{Buf, RawBuf};
#[derive(Debug)]
pub struct MaybeArmedBoxFuture<T> {
slot: ReusableLocalBoxFuture<T>,
armed: bool,
}
impl<T> MaybeArmedBoxFuture<T> {
pub fn armed(&self) -> bool {
self.armed
}
pub fn arm_future<F>(&mut self, f: F)
where
F: Future<Output = T> + 'static,
{
self.armed = true;
self.slot.set(f);
}
pub fn poll(&mut self, cx: &mut std::task::Context<'_>) -> std::task::Poll<T> {
match self.slot.poll(cx) {
r @ std::task::Poll::Ready(_) => {
self.armed = false;
r
}
p => p,
}
}
pub fn new<F>(f: F) -> Self
where
F: Future<Output = T> + 'static,
{
Self {
slot: ReusableLocalBoxFuture::new(f),
armed: false,
}
}
}
impl Default for MaybeArmedBoxFuture<BufResult<usize, Buf>> {
fn default() -> Self {
Self {
slot: ReusableLocalBoxFuture::new(async { (Ok(0), Buf::uninit()) }),
armed: false,
}
}
}
impl Default for MaybeArmedBoxFuture<BufResult<usize, RawBuf>> {
fn default() -> Self {
Self {
slot: ReusableLocalBoxFuture::new(async { (Ok(0), RawBuf::uninit()) }),
armed: false,
}
}
}
impl<T> Default for MaybeArmedBoxFuture<BufResult<usize, T>>
where
T: Default,
{
fn default() -> Self {
Self {
slot: ReusableLocalBoxFuture::new(async { (Ok(0), T::default()) }),
armed: false,
}
}
}
impl Default for MaybeArmedBoxFuture<io::Result<()>> {
fn default() -> Self {
Self {
slot: ReusableLocalBoxFuture::new(async { Ok(()) }),
armed: false,
}
}
}
|
