64 lines
1.3 KiB
Python
64 lines
1.3 KiB
Python
"""
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多个线程共享数据 - 没有锁的情况
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Version: 0.1
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Author: 骆昊
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Date: 2018-03-20
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"""
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from time import sleep
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from threading import Thread, Lock
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class Account(object):
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def __init__(self):
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self._balance = 0
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self._lock = Lock()
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def deposit(self, money):
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# 先获取锁才能执行后续的代码
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self._lock.acquire()
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try:
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new_balance = self._balance + money
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sleep(0.01)
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self._balance = new_balance
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finally:
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# 这段代码放在finally中保证释放锁的操作一定要执行
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self._lock.release()
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@property
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def balance(self):
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return self._balance
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class AddMoneyThread(Thread):
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def __init__(self, account, money):
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super().__init__()
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self._account = account
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self._money = money
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def run(self):
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self._account.deposit(self._money)
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def main():
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account = Account()
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threads = []
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# 创建100个存款的线程向同一个账户中存钱
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for _ in range(100):
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t = AddMoneyThread(account, 1)
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threads.append(t)
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t.start()
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# 等所有存款的线程都执行完毕∫
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for t in threads:
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t.join()
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print('账户余额为: ￥%d元' % account.balance)
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if __name__ == '__main__':
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main()
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