to.lock.acquire()#锁住对方的账户 to.deposit(amount) to.lock.release() _from.lock.release() a= Account('a', 1000) b= Account('b', 1000)#a往b转账100 t1 = threading.Thread(target=transfer, args=(a, b, 100)) t1.start()#b往a转账200 t2 = threading.Thread(target=transfer, args=(...
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balance =0lock = threading.Lock()defrun_thread(n):foriinrange(100000):# 先要获取锁:lock.acquire()try:# 放心地改吧:change_it(n)finally:# 改完了一定要释放锁:lock.release() 当多个线程同时执行lock.acquire()时,只有一个线程能成功地获取锁,然后继续执行代码,其他线程就继续等待直到获得锁为止。
subThread01.join() subThread02.join() print("num result : %s" % num)# 结果三次采集# num result : 0# num result : 0# num result : 0 # 2、RLock() 递归锁 基本介绍 递归锁是同步锁的一个升级版本,在同步锁的基础上可以做到连续重复使用多次acquire()后再重复使用多次release()的操作,但是一...
lock.acquire()# 上锁lock.acquire()# 死锁# 不执行globalnumforiinrange(10_000_000): num -=1lock.release() lock.release()if__name__ =="__main__": lock = threading.Lock() subThread01 = threading.Thread(target=add) subThread02 = threading.Thread(target=sub) subThread01.start() subT...
threadName) # 执行任务之前锁定线程 self.lock.acquire() chiHuoGuo(self.people, self.do) # 执行任务 # 执行完之后,释放锁 self.lock.release() print("结束线程: " + self.name) print("yoyo请小伙伴开始吃火锅:!!!") # 设置线程组 threads = [] # 创建新线程 thread1 = myThread("xiaoming"...
).namecondLock.acquire()# 上锁print("start and wait run thread :%s"%thName)condLock.wait()#...
t = threading.Thread(target=func, args=()) t.start() l.append(t) # 等待线程运行结束 for i in l: i.join() print(f'num={num}') 在上面的示例中,先将lock.acquire()和lock.release()代码注释掉,表示不使用锁,取消lock.acquire()和lock.release()代码注释表示使用加锁和解锁。在代码中增加了...
lock=Lock() deffunc_2(lock): iflock.acquire(timeout=3): print("Thread#2: Executed") lock.release() else: print("Thread#2: Timeout") deffunc_1(lock): lock.acquire() print("Thread#1: Executed") sleep(5) lock.release() thread1=Thread(target=func_1, args=(lock,)) ...
): lock.acquire() withlock+=1 lock.release() def dewithlock(): global withlock for i in range(count): lock.acquire() withlock-=1 lock.release() def innolock(): global nolock for i in range(count): nolock+=1 def denolock(): global nolock for i in range(count): nolock-=...