massive network refactor

veilid-core/src/xx/mod.rs

@@ -8,6 +8,7 @@ mod eventual_value_clone;
 mod ip_addr_port;
 mod ip_extra;
 mod log_thru;
+mod mutable_future;
 mod single_future;
 mod single_shot_eventual;
 mod split_url;
@@ -104,6 +105,7 @@ pub use eventual_value::*;
 pub use eventual_value_clone::*;
 pub use ip_addr_port::*;
 pub use ip_extra::*;
+pub use mutable_future::*;
 pub use single_future::*;
 pub use single_shot_eventual::*;
 pub use tick_task::*;

veilid-core/src/xx/mutable_future.rs

@@ -0,0 +1,33 @@
+use super::*;
+
+pub struct MutableFuture<O, T: Future<Output = O>> {
+    inner: Arc<Mutex<Pin<Box<T>>>>,
+}
+
+impl<O, T: Future<Output = O>> MutableFuture<O, T> {
+    pub fn new(inner: T) -> Self {
+        Self {
+            inner: Arc::new(Mutex::new(Box::pin(inner))),
+        }
+    }
+
+    pub fn set(&self, inner: T) {
+        *self.inner.lock() = Box::pin(inner);
+    }
+}
+
+impl<O, T: Future<Output = O>> Clone for MutableFuture<O, T> {
+    fn clone(&self) -> Self {
+        Self {
+            inner: self.inner.clone(),
+        }
+    }
+}
+
+impl<O, T: Future<Output = O>> Future for MutableFuture<O, T> {
+    type Output = O;
+    fn poll(self: Pin<&mut Self>, cx: &mut task::Context<'_>) -> task::Poll<Self::Output> {
+        let mut inner = self.inner.lock();
+        T::poll(inner.as_mut(), cx)
+    }
+}