structio/tests/queue.py

41 lines
1014 B
Python

import structio
async def producer(q: structio.Queue, n: int):
for i in range(n):
# This will wait until the
# queue is emptied by the
# consumer
await q.put(i)
print(f"Produced {i}")
await q.put(None)
print("Producer done")
async def consumer(q: structio.Queue):
while True:
# Hangs until there is
# something on the queue
item = await q.get()
if item is None:
print("Consumer done")
break
print(f"Consumed {item}")
# Simulates some work so the
# producer waits before putting
# the next value
await structio.sleep(1)
async def main(q: structio.Queue, n: int):
print("Starting consumer and producer")
async with structio.create_pool() as ctx:
ctx.spawn(producer, q, n)
ctx.spawn(consumer, q)
print("Bye!")
if __name__ == "__main__":
queue = structio.Queue(2) # Queue has size limit of 2
structio.run(main, queue, 5)