Multi-process shared data, true communications manager

Managers

A Manager object returned by Manager() controls a server process which holds Python objects and allows other processes to Mani Pulate them using proxies.

A Manager returned byManager()Would support typeslist,dict,Namespace,Lock,RLock,Semaphore,BoundedSemaphore,Condition,Event,Barrier,Queue,ValueandArray. For example,

From multiprocessing import Process,managerimport threading,time,osdef sub (d,l):    d[os.getpid ()] = Os.getpid ()    L.append (Os.getppid ())    print (L)    #print (d) if __name__ = = ' __main__ ': With    Manager () as M: #with. As is the role of the manager () to generate an alias M, and only in with the effective        d = m.dict ()    #用了with, the following can also be used.        L = Manager (). List (range (5))        p_list = []    #这个列表保存生成的多个进程, facilitates a join (). Wait for all to complete, for        i in range:            t = Process (target=sub,args= (d,l))            T.start ()            p_list.append (t)        For i in P_list:            i.join ()        print (d,l)

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Multi-process shared data, true communications manager