Introduced dylib extension format, cleared up shutdown sequence

orchid-host/src/dylib.rs

@@ -1,3 +1,4 @@
+use std::io;
 use std::path::{Path, PathBuf};
 use std::sync::{Arc, Mutex};
 
@@ -37,7 +38,13 @@ pub async fn ext_dylib(path: &Path, ctx: Ctx) -> Result<ExtPort, libloading::Err
 		use orchid_base::logging::log;
 		let mut lines = BufReader::new(read_log).lines();
 		while let Some(line) = lines.next().await {
-			writeln!(log("stderr"), "{log_path} err> {}", line.expect("Readline implies this")).await;
+			match line {
+				Ok(line) => writeln!(log("stderr"), "{log_path} err> {line}").await,
+				Err(e) => match e.kind() {
+					io::ErrorKind::BrokenPipe | io::ErrorKind::UnexpectedEof => break,
+					_ => panic!("Error while reading stderr {e}"),
+				},
+			}
 		}
 	});
 	let library = load_dylib(path)?;
@@ -45,10 +52,10 @@ pub async fn ext_dylib(path: &Path, ctx: Ctx) -> Result<ExtPort, libloading::Err
 		unsafe { library.get("orchid_extension_main") }?;
 	let data = Box::into_raw(Box::new(ctx)) as *const ();
 	extern "C" fn drop(data: *const ()) { std::mem::drop(unsafe { Box::from_raw(data as *mut Ctx) }) }
-	extern "C" fn spawn(data: *const (), vt: api::binary::FutureVT) {
+	extern "C" fn spawn(data: *const (), vt: api::binary::FutureBin) {
 		let _ = unsafe { (data as *mut Ctx).as_mut().unwrap().spawn(vt_to_future(vt)) };
 	}
-	let spawner = api::binary::Spawner { data, drop, spawn };
+	let spawner = api::binary::SpawnerBin { data, drop, spawn };
 	let cx = api::binary::ExtensionContext { input, output, log, spawner };
 	unsafe { (entrypoint)(cx) };
 	Ok(ExtPort { input: Box::pin(write_input), output: Box::pin(read_output) })