kopia lustrzana https://github.com/micropython/micropython
96 wiersze
2.1 KiB
Python
96 wiersze
2.1 KiB
Python
# Test Event class
|
|
|
|
try:
|
|
import asyncio
|
|
except ImportError:
|
|
print("SKIP")
|
|
raise SystemExit
|
|
|
|
|
|
async def task(id, ev):
|
|
print("start", id)
|
|
print(await ev.wait())
|
|
print("end", id)
|
|
|
|
|
|
async def task_delay_set(t, ev):
|
|
await asyncio.sleep(t)
|
|
print("set event")
|
|
ev.set()
|
|
|
|
|
|
async def main():
|
|
ev = asyncio.Event()
|
|
|
|
# Set and clear without anything waiting, and test is_set()
|
|
print(ev.is_set())
|
|
ev.set()
|
|
print(ev.is_set())
|
|
ev.clear()
|
|
print(ev.is_set())
|
|
|
|
# Create 2 tasks waiting on the event
|
|
print("----")
|
|
asyncio.create_task(task(1, ev))
|
|
asyncio.create_task(task(2, ev))
|
|
print("yield")
|
|
await asyncio.sleep(0)
|
|
print("set event")
|
|
ev.set()
|
|
print("yield")
|
|
await asyncio.sleep(0)
|
|
|
|
# Create a task waiting on the already-set event
|
|
print("----")
|
|
asyncio.create_task(task(3, ev))
|
|
print("yield")
|
|
await asyncio.sleep(0)
|
|
|
|
# Clear event, start a task, then set event again
|
|
print("----")
|
|
print("clear event")
|
|
ev.clear()
|
|
asyncio.create_task(task(4, ev))
|
|
await asyncio.sleep(0)
|
|
print("set event")
|
|
ev.set()
|
|
await asyncio.sleep(0)
|
|
|
|
# Cancel a task waiting on an event (set event then cancel task)
|
|
print("----")
|
|
ev = asyncio.Event()
|
|
t = asyncio.create_task(task(5, ev))
|
|
await asyncio.sleep(0)
|
|
ev.set()
|
|
t.cancel()
|
|
await asyncio.sleep(0.1)
|
|
|
|
# Cancel a task waiting on an event (cancel task then set event)
|
|
print("----")
|
|
ev = asyncio.Event()
|
|
t = asyncio.create_task(task(6, ev))
|
|
await asyncio.sleep(0)
|
|
t.cancel()
|
|
ev.set()
|
|
await asyncio.sleep(0.1)
|
|
|
|
# Wait for an event that does get set in time
|
|
print("----")
|
|
ev.clear()
|
|
asyncio.create_task(task_delay_set(0.01, ev))
|
|
await asyncio.wait_for(ev.wait(), 0.1)
|
|
await asyncio.sleep(0)
|
|
|
|
# Wait for an event that doesn't get set in time
|
|
print("----")
|
|
ev.clear()
|
|
asyncio.create_task(task_delay_set(0.1, ev))
|
|
try:
|
|
await asyncio.wait_for(ev.wait(), 0.01)
|
|
except asyncio.TimeoutError:
|
|
print("TimeoutError")
|
|
await ev.wait()
|
|
|
|
|
|
asyncio.run(main())
|