38 lines
760 B
Python
38 lines
760 B
Python
|
# Test fairness of cancelling a task
|
||
|
|
# That tasks which keeps being cancelled by multiple other tasks gets a chance to run
|
||
|
|
|
||
|
|
try:
|
||
|
|
import uasyncio as asyncio
|
||
|
|
except ImportError:
|
||
|
|
try:
|
||
|
|
import asyncio
|
||
|
|
except ImportError:
|
||
|
|
print("SKIP")
|
||
|
|
raise SystemExit
|
||
|
|
|
||
|
|
|
||
|
|
async def task_a():
|
||
|
|
try:
|
||
|
|
while True:
|
||
|
|
print("sleep a")
|
||
|
|
await asyncio.sleep(0)
|
||
|
|
except asyncio.CancelledError:
|
||
|
|
print("cancelled a")
|
||
|
|
|
||
|
|
|
||
|
|
async def task_b(id, other):
|
||
|
|
while other.cancel():
|
||
|
|
print("sleep b", id)
|
||
|
|
await asyncio.sleep(0)
|
||
|
|
print("done b", id)
|
||
|
|
|
||
|
|
|
||
|
|
async def main():
|
||
|
|
t = asyncio.create_task(task_a())
|
||
|
|
for i in range(3):
|
||
|
|
asyncio.create_task(task_b(i, t))
|
||
|
|
await t
|
||
|
|
|
||
|
|
|
||
|
|
asyncio.run(main())
|