perf: move Deno.writeTextFile and like functions to Rust (#14221)

Co-authored-by: Luca Casonato <hello@lcas.dev>

1 files changed, 12 insertions, 0 deletions

diff --git a/core/async_cancel.rs b/core/async_cancel.rs
index e8f25136c..cf338174d 100644
--- a/core/async_cancel.rs
+++ b/core/async_cancel.rs
@@ -1,6 +1,7 @@
 // Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
 
 use crate::RcLike;
+use crate::Resource;
 use futures::future::FusedFuture;
 use futures::future::Future;
 use futures::future::TryFuture;
@@ -8,6 +9,7 @@ use futures::task::Context;
 use futures::task::Poll;
 use pin_project::pin_project;
 use std::any::type_name;
+use std::borrow::Cow;
 use std::error::Error;
 use std::fmt;
 use std::fmt::Display;
@@ -84,6 +86,16 @@ impl<F: Future> FusedFuture for Cancelable<F> {
   }
 }
 
+impl Resource for CancelHandle {
+  fn name(&self) -> Cow<str> {
+    "cancellation".into()
+  }
+
+  fn close(self: Rc<Self>) {
+    self.cancel();
+  }
+}
+
 #[pin_project(project = TryCancelableProjection)]
 #[derive(Debug)]
 pub struct TryCancelable<F> {