Split the huge torrent manager into 3 classes. All public access members but ok for the start

crates/librqbit/src/spawn_utils.rs

@@ -0,0 +1,37 @@
+use std::fmt::Display;
+
+use log::{debug, error};
+
+pub fn spawn<N: Display + 'static + Send>(
+    name: N,
+    fut: impl std::future::Future<Output = anyhow::Result<()>> + Send + 'static,
+) {
+    debug!("starting task \"{}\"", &name);
+    tokio::spawn(async move {
+        match fut.await {
+            Ok(_) => {
+                debug!("task \"{}\" finished", &name);
+            }
+            Err(e) => {
+                error!("error in task \"{}\": {:#}", &name, e)
+            }
+        }
+    });
+}
+
+pub fn spawn_blocking<T: Send + Sync + 'static, N: Display + 'static + Send>(
+    name: N,
+    f: impl FnOnce() -> anyhow::Result<T> + Send + 'static,
+) -> tokio::task::JoinHandle<anyhow::Result<T>> {
+    debug!("starting blocking task \"{}\"", name);
+    tokio::task::spawn_blocking(move || match f() {
+        Ok(v) => {
+            debug!("blocking task \"{}\" finished", name);
+            Ok(v)
+        }
+        Err(e) => {
+            error!("error in blocking task \"{}\": {:#}", name, &e);
+            Err(e)
+        }
+    })
+}