You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
846 B
37 lines
846 B
# Test fairness of cancelling a task
|
|
# That tasks which continuously cancel each other don't take over the scheduler
|
|
|
|
try:
|
|
import uasyncio as asyncio
|
|
except ImportError:
|
|
try:
|
|
import asyncio
|
|
except ImportError:
|
|
print("SKIP")
|
|
raise SystemExit
|
|
|
|
|
|
async def task(id, other):
|
|
for i in range(3):
|
|
try:
|
|
print("start", id)
|
|
await asyncio.sleep(0)
|
|
print("done", id)
|
|
except asyncio.CancelledError as er:
|
|
print("cancelled", id)
|
|
if other is not None:
|
|
print(id, "cancels", other)
|
|
tasks[other].cancel()
|
|
|
|
|
|
async def main():
|
|
global tasks
|
|
tasks = [
|
|
asyncio.create_task(task(0, 1)),
|
|
asyncio.create_task(task(1, 0)),
|
|
asyncio.create_task(task(2, None)),
|
|
]
|
|
await tasks[2]
|
|
|
|
|
|
asyncio.run(main())
|
|
|