This one makes it better for sure

crates/librqbit/src/session.rs

@@ -4,6 +4,7 @@ use std::{
     io::{BufReader, BufWriter, Read},
     net::SocketAddr,
     path::PathBuf,
+    pin::Pin,
     str::FromStr,
     sync::Arc,
     time::Duration,
@@ -24,7 +25,7 @@ use bencode::{bencode_serialize_to_writer, BencodeDeserializer};
 use buffers::{ByteBuf, ByteBufT, ByteString};
 use clone_to_owned::CloneToOwned;
 use dht::{Dht, DhtBuilder, DhtConfig, Id20, PersistentDht, PersistentDhtConfig};
-use futures::{stream::FuturesUnordered, TryFutureExt};
+use futures::{stream::FuturesUnordered, Future, FutureExt, TryFutureExt};
 use librqbit_core::{
     directories::get_configuration_directory,
     magnet::Magnet,
@@ -377,8 +378,9 @@ pub(crate) struct CheckedIncomingConnection {
 
 impl Session {
     /// Create a new session. The passed in folder will be used as a default unless overriden per torrent.
-    pub async fn new(output_folder: PathBuf) -> anyhow::Result<Arc<Self>> {
-        Self::new_with_opts(output_folder, SessionOptions::default()).await
+    #[inline(never)]
+    pub fn new(output_folder: PathBuf) -> Pin<Box<dyn Future<Output = anyhow::Result<Arc<Self>>>>> {
+        Self::new_with_opts(output_folder, SessionOptions::default())
     }
 
     pub fn default_persistence_filename() -> anyhow::Result<PathBuf> {
@@ -391,10 +393,12 @@ impl Session {
     }
 
     /// Create a new session with options.
-    pub async fn new_with_opts(
+    #[inline(never)]
+    pub fn new_with_opts(
         output_folder: PathBuf,
         mut opts: SessionOptions,
-    ) -> anyhow::Result<Arc<Self>> {
+    ) -> Pin<Box<dyn Future<Output = anyhow::Result<Arc<Self>>>>> {
+        async move {
             let peer_id = opts.peer_id.unwrap_or_else(generate_peer_id);
             let token = CancellationToken::new();
 
@@ -479,6 +483,8 @@ impl Session {
 
             Ok(session)
         }
+        .boxed()
+    }
 
     async fn task_persistence(self: Arc<Self>) -> anyhow::Result<()> {
         // Populate initial from the state filename
@@ -738,11 +744,12 @@ impl Session {
     }
 
     /// Add a torrent to the session.
-    pub async fn add_torrent(
-        &self,
-        add: AddTorrent<'_>,
+    pub fn add_torrent<'a>(
+        &'a self,
+        add: AddTorrent<'a>,
         opts: Option<AddTorrentOptions>,
-    ) -> anyhow::Result<AddTorrentResponse> {
+    ) -> Pin<Box<dyn Future<Output = anyhow::Result<AddTorrentResponse>> + Send + 'a>> {
+        async move {
             // Magnet links are different in that we first need to discover the metadata.
             let span = error_span!("add_torrent");
             let _ = span.enter();
@@ -763,8 +770,8 @@ impl Session {
 
             let (info_hash, info, trackers, peer_rx, initial_peers) = match add {
                 AddTorrent::Url(magnet) if magnet.starts_with("magnet:") => {
-                let magnet =
-                    Magnet::parse(&magnet).context("provided path is not a valid magnet URL")?;
+                    let magnet = Magnet::parse(&magnet)
+                        .context("provided path is not a valid magnet URL")?;
                     let info_hash = magnet
                         .as_id20()
                         .context("magnet link didn't contain a BTv1 infohash")?;
@@ -869,6 +876,8 @@ impl Session {
             )
             .await
         }
+        .boxed()
+    }
 
     #[allow(clippy::too_many_arguments)]
     async fn main_torrent_info(

crates/librqbit/src/tracing_subscriber_config_utils.rs

@@ -60,6 +60,7 @@ pub struct InitLoggingResult {
     pub line_broadcast: LineBroadcast,
 }
 
+#[inline(never)]
 pub fn init_logging(opts: InitLoggingOptions) -> anyhow::Result<InitLoggingResult> {
     let stderr_filter = EnvFilter::builder()
         .with_default_directive(