diff options
Diffstat (limited to 'Lib/asyncio/taskgroups.py')
| -rw-r--r-- | Lib/asyncio/taskgroups.py | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Lib/asyncio/taskgroups.py b/Lib/asyncio/taskgroups.py index 0fdea36..06b2e0d 100644 --- a/Lib/asyncio/taskgroups.py +++ b/Lib/asyncio/taskgroups.py @@ -164,8 +164,14 @@ class TaskGroup: else: task = self._loop.create_task(coro, context=context) tasks._set_task_name(task, name) - task.add_done_callback(self._on_task_done) - self._tasks.add(task) + # optimization: Immediately call the done callback if the task is + # already done (e.g. if the coro was able to complete eagerly), + # and skip scheduling a done callback + if task.done(): + self._on_task_done(task) + else: + self._tasks.add(task) + task.add_done_callback(self._on_task_done) return task # Since Python 3.8 Tasks propagate all exceptions correctly, |