Python Multiprocessing: Wisely Kills a Process

Question

Whether there is a

import multiprocessing
import schedule


def worker():
     #do some stuff


def sched(argv):
    schedule.every(0.01).minutes.do(worker)          
    while True:
        schedule.run_pending()


processs = []
..
..
p = multiprocessing.Process(target=sched,args)
..
..
processs.append(p)

for p in processs:
    p.terminate()

gracefully kills a list of processes?

If this is not the easiest way to do this?

The goal is to reload the configuration file into memory, so I would like to kill all the child processes and create others, and the latter will read the new configuration file.

Edit : added more code to explain that I am running a loopwhile True

Change . This is the new code after @dano.

def get_config(self):
        from ConfigParser import SafeConfigParser
..
        return argv

def sched(self, args, event):
#schedule instruction:
        schedule.every(0.01).minutes.do(self.worker,args)
        while not  event.is_set():
                schedule.run_pending()                                                                    

def dispatch_processs(self, conf):
        processs = []
        event = multiprocessing.Event()

        for conf in self.get_config():
                process = multiprocessing.Process(target=self.sched,args=( i for i in conf), kwargs={'event' : event})
                processs.append((process, event)
return processs

def start_process(self, process):
        process.start()

def gracefull_process(self, process):
        process.join()

def main(self):
        while True:
                processs = self.dispatch_processs(self.get_config())
                print ("%s processes running " % len(processs) )

                for process, event in processs:                                                               

                        self.start_process(process)
                        time.sleep(1)
                        event.set()
                        self.gracefull_process(process)

The good thing in the code is that I can edit the configuration file, and the process will also reload its configuration.

The problem is that only the first process is executed, and the rest are ignored.

. , True (), , refresh_time

def sched(self, args, event):

    schedule.every(0.01).minutes.do(self.worker,args)
    for i in range(refresh_time):
            schedule.run_pending() 
            time.sleep(1)

def start_processs(self, processs):
        for p,event in processs:
                if not p.is_alive():
                        p.start()
                time.sleep(1)
                event.set()

        self.gracefull_processs(processs)

def gracefull_processs(self, processs):
        for p,event in processs:
                p.join()
        processs = self.dispatch_processs(self.get_config())
        self.start_processs(processs)

def main(self):

        while True:
                processs = self.dispatch_processs(self.get_config())

                self.start_processs(processs)
                break
        print ("Reloading function main")
        self.main()

Answer 1

worker , multiprocessing.Event :

import multiprocessing
import schedule


def worker():
     #do some stuff

def sched(argv, event=None):
    schedule.every(0.01).minutes.do(worker)          
    while not event.is_set():  # Run until we're told to shut down.
        schedule.run_pending()

processes = []
..
..
event = multiprocessing.Event()
p = multiprocessing.Process(target=sched,args, kwargs={'event' : event})
..
..
processes.append((p, event))

# Tell all processes to shut down
for _, event in processes:
    event.set()

# Now actually wait for them to shut down
for p, _ in processes:
    p.join()

Answer 2

A: , .terminate() SIG_ *

, , " ", / - O/S (O/S , ).

, → > fooobar.com/questions/1561916/...

Answer 3

, - .

, unix ( scp), terminate SIGTERM . ( scp):

import signal

def on_terminate(signum, stack):
    wait_for_current_scp_operation()

signal.signal(signal.SIGTERM, on_terminate)