我想在两个帖子中分四次调用streamSimulation
。
如何创建第二个循环,创建第二个线程并在该线程中执行循环?
import asyncio
import functools
from concurrent.futures import ThreadPoolExecutor
async def streamSimulation(p1,p2,p3,p4):
print("Stream init")
while True:
await asyncio.sleep(2)
print("Stream Simulation")
print("Params: " + p1 + p2 + p3 + p4)
doSomething()
def doSomething():
print("Did something")
def main():
loop = asyncio.get_event_loop()
#Supposed to run in first thread
asyncio.ensure_future(streamSimulation("P1","P2","P3","P4"))
asyncio.ensure_future(streamSimulation("A1","A2","A3","A4"))
#Supposed to run in second thread
asyncio.ensure_future(streamSimulation("Q1","Q2","Q3","Q4"))
asyncio.ensure_future(streamSimulation("B1","B2","B3","B4"))
loop.run_forever()
main()
答案 0 :(得分:1)
你的想法与异步方式冲突,抱歉。
通常,您需要主线程中的单个事件循环和线程池来执行 CPU绑定任务
单循环的原因是:它是 IO-bound ,循环执行的代码永远不会阻塞,除非等待IO / timer事件< / em>的
这意味着两个循环不会提升性能:它们都被内核IO子系统阻止。
唯一的例外是将两个不同的事件循环放在一起,例如asyncio和Qt(但对于这种特殊情况,有qualmash项目)。