diff options
Diffstat (limited to 'extmod/uasyncio/task.py')
| -rw-r--r-- | extmod/uasyncio/task.py | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/extmod/uasyncio/task.py b/extmod/uasyncio/task.py index 26df7b1725..d775164909 100644 --- a/extmod/uasyncio/task.py +++ b/extmod/uasyncio/task.py @@ -123,7 +123,7 @@ class Task: def __init__(self, coro, globals=None): self.coro = coro # Coroutine of this Task self.data = None # General data for queue it is waiting on - self.state = True # None, False, True or a TaskQueue instance + self.state = True # None, False, True, a callable, or a TaskQueue instance self.ph_key = 0 # Pairing heap self.ph_child = None # Paring heap self.ph_child_last = None # Paring heap @@ -137,6 +137,9 @@ class Task: elif self.state is True: # Allocated head of linked list of Tasks waiting on completion of this task. self.state = TaskQueue() + elif type(self.state) is not TaskQueue: + # Task has state used for another purpose, so can't also wait on it. + raise RuntimeError("can't wait") return self def __next__(self): |