Hi,
I wrote simple asyncio program (see below) and I'm not sure if I understand
behavior correctly.
I have print_tasks coroutine which prints each task in a loop by using
Task.all_tasks function.
I have also task_launcher coroutine that launches (by loop.create_task())
simple task that waits some and prints "ping".
Question is why finished "ping" tasks keep accumulating in Task.all_tasks?
After a while there is a lot of:
<Task finished coro=<ping() done, defined at test.py:25> result=None>
when printing in Task.all_tasks and number of those increases as new ping
tasks are launched
Is there a way to prune finished tasks (I tried forcing gc) or I do
something wrong?
I ran on python 3.4.3.
Best regards,
L
import asyncio
loop = asyncio.get_event_loop()
@asyncio.coroutine
def print_tasks(loop):
while True:
tasks = asyncio.Task.all_tasks(loop)
for task in tasks:
print(task)
print()
yield from asyncio.sleep(1)
@asyncio.coroutine
def task_launcher(loop):
while True:
yield from asyncio.sleep(1)
loop.create_task(ping())
@asyncio.coroutine
def ping():
yield from asyncio.sleep(2)
print("ping")
loop.create_task(print_tasks(loop))
loop.create_task(task_launcher(loop))
loop.run_forever()
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