概述
lock = threading.Lock()
res = lock.acquire(timeout=10)
if res:
# do something ....
lock.release()
else:
# do something else ...我更喜欢使用with语句而不是显式的“获取”和“释放”,但我不知道如何获得超时效果.
import threading
from contextlib import contextmanager
@contextmanager
def acquire_timeout(lock,timeout):
result = lock.acquire(timeout=timeout)
yield result
if result:
lock.release()
# Usage:
lock = threading.Lock()
with acquire_timeout(lock,2) as acquired:
if acquired:
print('got the lock')
# do something ....
else:
print('timeout: lock not available')
# do something else ...*注意：这在Python 2.x中不起作用,因为Lock.acquire没有超时参数
总结
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