请教如何在 concurrent.futures 子进程里,无冲突地使用整个程序的全局队列? - V2EX
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qazwsxkevin

请教如何在 concurrent.futures 子进程里,无冲突地使用整个程序的全局队列?

  •  
  •   qazwsxkevin Oct 23, 2020 860 views
    This topic created in 2027 days ago, the information mentioned may be changed or developed.
    from concurrent import futures from multiprocessing import Manager # 此函数无限循环,消费掉 sqltextqueen def procSQL(sqltextqueen): while True while not sqltextqueen: inserttext = sqltextqueen.get() mysqldb =xxxx mysqldb.insert(inserttext) #略 time.sleep(3) if __name__ == '__main__': MainSQLProcess = futures.ProcessPoolExecutor(max_workers=1) # 全局 SQL 队列 manager = Manager() SQLQueen = manager.queue MainSQLProcessRet = MainSQLProcess.sumit(procSQL,SQLQueen) 

    ################ another.py ##################

     TaskProcess = {} TaskProcesRet = {} # 提交任务 TaskinfoA = { 'TYPE': 'CPS' 'countt': countt, 'Rget': stRget, 'DLoption': DLoption, 'DTO': mtinfo.get('DTO'), 'errFlag': errFlag # 字典内容引用的一些值,有些是从函数外几层的函数传过来的,距离 main()已经好 N 层了 } TaskProcess['A'] = futures.ProcessPoolExecutor(max_workers=1) TaskProcess['B'] = futures.ProcessPoolExecutor(max_workers=1) # 交给进程池 TaskRet['A'] = TaskProcess['A'].submit(ProcessSuit,TaskinfoA) TaskRet['B'] = TaskProcess['B'].submit(ProcessSuit,TaskinfoB) 

    ProcessSuit 函数里,产生的一些 SQL 语句,希望能及时送到全局队列里去消费,而不是通过 concurrent.futures 的回调 函数一层一层地往回 main 送到才处理...

    我尝试了把 SQLQueen 引用在

     TaskinfoA = { 'TYPE': 'CPS' 'countt': countt, 'Rget': stRget, 'DLoption': DLoption, 'DTO': mtinfo.get('DTO'), 'errFlag': errFlag, 'SQLQueen' : SQLQueen # <----- } 

    是不行的,貌似是有个 concurrent.futures pick 锁什么的 请教如何可以让各个子进程,都能不冲突地,实时送到全局的队列里,各自进程都可以 put,get,但是又不冲突?

    1 replies    2020-10-25 00:25:56 +08:00
    qazwsxkevin
        1
    qazwsxkevin  
    OP
       Oct 25, 2020
    最后重新改写了大部分函数
    再用了 Manager().Queue() 作为队列
    事件算是解决了。。。
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