python - 在python中更改多进程的局部变量

Question

我有一个多进程设置，或多或少看起来如下：

import multiprocessing

class Worker(multiprocessing.Process):
    def __init__(self, name):
        self.name = name
    def run(self):
        while True:
            #do something
            print( self.name + " is working!")
            #wait a few seconds

def main():
    workers = []
    for a in ["A", "B", "C", "D"]:
        w = Worker(a)
        workers += [w]
        w.start()

我想做的是能够从 main() 更改工作人员的名称。为每个工人创建一个单独的队列是这样做的唯一方法，还是有更好的方法？我觉得我通过使用多进程不断遇到限制，我不确定我被允许做什么了。

Answer 1

你可以是Pipe：

import multiprocessing

class Worker(multiprocessing.Process):
    def __init__(self, name):
        self.name = name
        self.change_name_r, self.change_name_w = multiprocessing.Pipe(False)

    def run(self):
        while True:
            #do something
            if self.change_name_r.poll():
                self.name = self.change_name_r.recv()
            print( self.name + " is working!")
            #wait a few seconds

    def change_name(self, new_name):
        self.change_name_w.send(new_name)