[英]Python multiprocessing manager class object thread/process safe
I have the following class that is shared between multiple consumers (using producer/consumer methodology). 我有以下几个在多个消费者之间共享的类(使用生产者/消费者方法)。 My question involves the methods called on this class.
我的问题涉及这个类上调用的方法。 Do I need to implement locks or is the manager class thread safe?
我需要实现锁定还是经理类线程安全?
import multiprocessing as mp
from multiprocessing.manager import BaseManager
class SampleClass(object):
def __init__(self):
self._count = 0
# Does locking need to be implemented here?
def increment(self):
self._count += 1
BaseManager.register('SampleClass', SampleClass)
manager = BaseManager()
manager.start()
instance = manager.SampleClass()
jobs = []
for i in range(0, 5):
p = mp.Process(target=some_func, args=(instance,))
jobs.append(p)
p.start()
for p in jobs:
p.join()
I think so. 我认同。 As said as a comment on this other question:
正如对此另一个问题的评论所说:
Is
manager.dict()
this process safe?manager.dict()
这个过程安全吗?@LorenzoBelli, if you're asking whether access to the manager is synchronized, I believe the answer is yes.
@LorenzoBelli,如果你问是否同步访问经理,我相信答案是肯定的。
multiprocessing.Manager()
returns an instance ofSyncManager
, the name of which suggests as much!multiprocessing.Manager()
返回一个SyncManager
实例 ,其名称同样表示!
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