超时多处理函数 [英] Timing out a multiprocessing function

问题描述

我需要为使用一些多处理内容的 python 函数设置时间限制(我不知道这是否重要).像这样:

I need to set a time limit on a python function which use some multiprocessing stuff (I don't know if it matters). Something like this:

function(a_list):

     p1 = Process(a_list[0:len(a_list/2)])
     p2 = Process(a_list[len(a_list)/2: len(a_list)])

     //start and join p1, p2

我环顾网络，发现了一个超时装饰器，但它看起来非常棘手和冗长(我是装饰器的新手).我想要的是一件简单的事情.

I look around the net and I found a time out decorator but it looks quite tricky and verbose (I'm newbie on decorators). What I'd want is a simple thing.

我觉得我说得太简单了.我的程序迭代上述函数并将结果存储在一个列表中，如下所示:

I think I made it too simple. My program iterates over the above function and store result in a list something like this:

while(something):

     retval = function(some_list)  # here I need the time out thing

     # if function timed out then skip

     ris_list.append(retval)

推荐答案

您应该可以使用以下代码做到这一点:

You should be able to do that with this code:

process.join(timeout)
if process.is_alive():
    process.terminate()

因此，不是在函数中设置超时，您可以加入超时进程，如果该进程在超时后还没有完成，则终止它.

So instead of setting a timeout in the function, you can join with a timeout the process and if the process hasn't finished after that timeout, then terminate it.

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