Ignore broken pipe error from zbus

platforms/unix/src/adapter.rs

@@ -212,7 +212,7 @@ impl AdapterImpl {
         is_window_focused: bool,
         root_window_bounds: WindowBounds,
         action_handler: Box<dyn ActionHandler + Send>,
-    ) -> Option<Self> {
+    ) -> Self {
         let tree = Tree::new(initial_state, is_window_focused);
         let id = NEXT_ADAPTER_ID.fetch_add(1, Ordering::SeqCst);
         let (messages, context) = {
@@ -222,11 +222,11 @@ impl AdapterImpl {
             app_context.push_adapter(id, &context);
             (messages, context)
         };
-        Some(AdapterImpl {
+        AdapterImpl {
             id,
             messages,
             context,
-        })
+        }
     }
 
     pub(crate) async fn register_tree(&self) {
@@ -428,7 +428,7 @@ impl Drop for AdapterImpl {
     }
 }
 
-pub(crate) type LazyAdapter = Pin<Arc<Lazy<Option<AdapterImpl>, Boxed<Option<AdapterImpl>>>>>;
+pub(crate) type LazyAdapter = Pin<Arc<Lazy<AdapterImpl, Boxed<AdapterImpl>>>>;
 
 pub struct Adapter {
     r#impl: LazyAdapter,
@@ -474,23 +474,23 @@ impl Adapter {
             let mut bounds = self.root_window_bounds.lock().unwrap();
             *bounds = new_bounds;
         }
-        if let Some(Some(r#impl)) = Lazy::try_get(&self.r#impl) {
+        if let Some(r#impl) = Lazy::try_get(&self.r#impl) {
             r#impl.set_root_window_bounds(new_bounds);
         }
     }
 
     /// If and only if the tree has been initialized, call the provided function
     /// and apply the resulting update.
     pub fn update_if_active(&self, update_factory: impl FnOnce() -> TreeUpdate) {
-        if let Some(Some(r#impl)) = Lazy::try_get(&self.r#impl) {
+        if let Some(r#impl) = Lazy::try_get(&self.r#impl) {
             r#impl.update(update_factory());
         }
     }
 
     /// Update the tree state based on whether the window is focused.
     pub fn update_window_focus_state(&self, is_focused: bool) {
         self.is_window_focused.store(is_focused, Ordering::SeqCst);
-        if let Some(Some(r#impl)) = Lazy::try_get(&self.r#impl) {
+        if let Some(r#impl) = Lazy::try_get(&self.r#impl) {
             r#impl.update_window_focus_state(is_focused);
         }
     }

platforms/unix/src/atspi/bus.rs

@@ -15,7 +15,7 @@ use atspi::{
     Interface, InterfaceSet,
 };
 use serde::Serialize;
-use std::{collections::HashMap, env::var, sync::Weak};
+use std::{collections::HashMap, env::var, io, sync::Weak};
 use zbus::{
     names::{BusName, InterfaceName, MemberName, OwnedUniqueName},
     zvariant::{Str, Value},
@@ -123,12 +123,15 @@ impl Bus {
         Ok(())
     }
 
-    async fn register_interface<T>(&self, path: &str, interface: T) -> Result<()>
+    async fn register_interface<T>(&self, path: &str, interface: T) -> Result<bool>
     where
         T: zbus::Interface,
     {
-        self.conn.object_server().at(path, interface).await?;
-        Ok(())
+        map_or_ignoring_broken_pipe(
+            self.conn.object_server().at(path, interface).await,
+            false,
+            |result| result,
+        )
     }
 
     pub(crate) async fn unregister_interfaces(
@@ -160,12 +163,15 @@ impl Bus {
         Ok(())
     }
 
-    async fn unregister_interface<T>(&self, path: &str) -> Result<()>
+    async fn unregister_interface<T>(&self, path: &str) -> Result<bool>
     where
         T: zbus::Interface,
     {
-        self.conn.object_server().remove::<T, _>(path).await?;
-        Ok(())
+        map_or_ignoring_broken_pipe(
+            self.conn.object_server().remove::<T, _>(path).await,
+            false,
+            |result| result,
+        )
     }
 
     pub(crate) async fn emit_object_event(
@@ -338,14 +344,35 @@ impl Bus {
         signal_name: &str,
         body: EventBody<'_, T>,
     ) -> Result<()> {
-        self.conn
-            .emit_signal(
-                Option::<BusName>::None,
-                target.path(),
-                InterfaceName::from_str_unchecked(interface),
-                MemberName::from_str_unchecked(signal_name),
-                &body,
-            )
-            .await
+        map_or_ignoring_broken_pipe(
+            self.conn
+                .emit_signal(
+                    Option::<BusName>::None,
+                    target.path(),
+                    InterfaceName::from_str_unchecked(interface),
+                    MemberName::from_str_unchecked(signal_name),
+                    &body,
+                )
+                .await,
+            (),
+            |_| (),
+        )
+    }
+}
+
+pub(crate) fn map_or_ignoring_broken_pipe<T, U, F>(
+    result: zbus::Result<T>,
+    default: U,
+    f: F,
+) -> zbus::Result<U>
+where
+    F: FnOnce(T) -> U,
+{
+    match result {
+        Ok(result) => Ok(f(result)),
+        Err(zbus::Error::InputOutput(error)) if error.kind() == io::ErrorKind::BrokenPipe => {
+            Ok(default)
+        }
+        Err(error) => Err(error),
     }
 }

platforms/unix/src/atspi/mod.rs

@@ -39,6 +39,6 @@ impl From<accesskit::Rect> for Rect {
     }
 }
 
-pub(crate) use bus::Bus;
+pub(crate) use bus::*;
 pub(crate) use object_address::OwnedObjectAddress;
 pub(crate) use object_id::ObjectId;

platforms/unix/src/context.rs

@@ -16,7 +16,7 @@ use zbus::{Connection, Task};
 
 use crate::{
     adapter::{LazyAdapter, Message},
-    atspi::{interfaces::Event, Bus, OwnedObjectAddress},
+    atspi::{interfaces::Event, map_or_ignoring_broken_pipe, Bus, OwnedObjectAddress},
     util::WindowBounds,
 };
 
@@ -167,9 +167,10 @@ async fn listen(session_bus: Connection) -> zbus::Result<()> {
         select! {
             change = changes.next() => {
                 atspi_bus = if let Some(change) = change {
-                    match change.get().await {
-                        Ok(true) => Bus::new(&session_bus).await.ok(),
-                        _ => None,
+                    if change.get().await? {
+                        map_or_ignoring_broken_pipe(Bus::new(&session_bus).await, None, Some)?
+                    } else {
+                        None
                     }
                 } else {
                     None
@@ -182,16 +183,14 @@ async fn listen(session_bus: Connection) -> zbus::Result<()> {
                     if let Some(activation_context) = ACTIVATION_CONTEXT.get() {
                         let activation_context = activation_context.lock().await;
                         for adapter in &activation_context.adapters {
-                            if let Some(adapter) = &*adapter.as_ref().await {
-                                adapter.register_tree().await;
-                            }
+                            adapter.as_ref().await.register_tree().await;
                         }
                     }
                 }
             }
             message = messages.next() => {
                 if let Some((message, atspi_bus)) = message.zip(atspi_bus.as_ref()) {
-                    let _ = process_adapter_message(atspi_bus, message).await;
+                    process_adapter_message(atspi_bus, message).await?;
                 }
             }
             complete => return Ok(()),