本文实例讲述了python多线程高级锁condition简单用法。分享给大家供大家参考,具体如下:多
本文实例讲述了python多线程高级锁condition简单用法。分享给大家供大家参考,具体如下:
多线程编程中如果使用Condition对象代替lock, 能够实现在某个事件触发后才处理数据, condition中含有的方法:
- - wait:线程挂起,收到notify通知后继续运行
- - notify:通知其他线程, 解除其它线程的wai状态
- - notifyAll(): 通知所有线程
- - acquire和release: 获得锁和解除锁, 与lock类似,
- - enter和exit使得对象支持上下文操作:
def __enter__(self):
return self._lock.__enter__()
def __exit__(self, *args):
return self._lock.__exit__(*args)
代码:
import threading
from threading import Condition
# condition
class XiaoAi(threading.Thread):
def __init__(self, cond):
self.cond = cond
super().__init__(name="xiaoai")
def run(self):
self.cond.acquire()
self.cond.wait()
print('{}:ennn. '.format(self.name))
self.cond.notify()
self.cond.wait()
print('{}:好嗒. '.format(self.name))
self.cond.release()
class TianMao(threading.Thread):
def __init__(self, cond):
super().__init__(name="tiaomao")
self.cond = cond
def run(self):
self.cond.acquire()
print('{}:hello ~ xiaoai. '.format(self.name))
self.cond.notify()
self.cond.wait()
print('{}:我们来念一首诗吧! . '.format(self.name))
self.cond.notify()
self.cond.release()
if __name__ == '__main__':
condition = Condition()
xiaoai = XiaoAi(condition)
tianmao = TianMao(condition)
# 启动顺序很重要
xiaoai.start()
tianmao.start()
打印结果:
tiaomao:hello ~ xiaoai. xiaoai:ennn. tiaomao:我们来念一首诗吧! . xiaoai:好嗒
总结:
这个比较鸡肋
python 多线程 高级锁 condition