07 递归锁

import time
from threading import Thread, Lock, RLock
def f1(locA, locB):
    # print('xxxx')
    # time.sleep(0.1)
    locA.acquire()
    print('f1>>1号抢到了A锁')

    time.sleep(1)
    locB.acquire()
    print('f1>>1号抢到了B锁')
    locB.release()

    locA.release()
def f2(locA, locB):
    print('22222')
    time.sleep(0.1)
    locB.acquire()
    print('f2>>2号抢到了B锁')
    locA.acquire()
    time.sleep(1)
    print('f2>>2号抢到了A锁')
    locA.release()
    locB.release()
if __name__ == '__main__':
    # locA =locB = Lock()
    locA = Lock()
    locB = Lock()
    # locA = locB = RLock()  #递归锁,维护一个计数器,acquire一次就加1,release就减1
    t1 = Thread(target=f1, args=(locA, locB))
    t2 = Thread(target=f2, args=(locA, locB))
    t1.start()
    t2.start()