我有一个应用程序在给定相同的随机种子时需要相同的结果。但是我发现random.randint不是线程安全的。我试过互斥体,但这不起作用。这里是我的实验代码(长,但简单):在Python中使随机模块线程安全
import threading
import random
def child(n, a):
g_mutex = threading.Lock()
g_mutex.acquire()
random.seed(n)
for i in xrange(100):
a.append(random.randint(0, 1000))
g_mutex.release()
def main():
a = []
b = []
c1 = threading.Thread(target = child, args = (10, a))
c2 = threading.Thread(target = child, args = (20, b))
c1.start()
c2.start()
c1.join()
c2.join()
c = []
d = []
c1 = threading.Thread(target = child, args = (10, c))
c2 = threading.Thread(target = child, args = (20, d))
c1.start()
c1.join()
c2.start()
c2.join()
print a == c, b == d
if __name__ == "__main__":
main()
我希望将代码打印真实,真实,但它代表一个机会给假的,假的。我如何制作线程安全的randint?
不敢相信我没注意到。如果你持有一个全局锁,那不是线程中有太多要点。 – 2012-04-05 02:37:04