Add cancel messages to core task cancelation (#96972)

homeassistant/core.py

@@ -764,7 +764,7 @@ class HomeAssistant:
         for task in self._background_tasks:
             self._tasks.add(task)
             task.add_done_callback(self._tasks.remove)
-            task.cancel()
+            task.cancel("Home Assistant is stopping")
         self._cancel_cancellable_timers()
 
         self.exit_code = exit_code
@@ -814,7 +814,7 @@ class HomeAssistant:
                 "the stop event to prevent delaying shutdown",
                 task,
             )
-            task.cancel()
+            task.cancel("Home Assistant stage 2 shutdown")
             try:
                 async with async_timeout.timeout(0.1):
                     await task

homeassistant/runner.py

@@ -196,7 +196,7 @@ def _cancel_all_tasks_with_timeout(
         return
 
     for task in to_cancel:
-        task.cancel()
+        task.cancel("Final process shutdown")
 
     loop.run_until_complete(asyncio.wait(to_cancel, timeout=timeout))
 

homeassistant/util/timeout.py

@@ -232,7 +232,7 @@ class _GlobalTaskContext:
         """Cancel own task."""
         if self._task.done():
             return
-        self._task.cancel()
+        self._task.cancel("Global task timeout")
 
     def pause(self) -> None:
         """Pause timers while it freeze."""
@@ -330,7 +330,7 @@ class _ZoneTaskContext:
         # Timeout
         if self._task.done():
             return
-        self._task.cancel()
+        self._task.cancel("Zone timeout")
 
     def pause(self) -> None:
         """Pause timers while it freeze."""