如何杀死所有的多处理？

Question

I have a python function which calls another function in a multiprocessing.How can I kill all the multiprocessing using python?

This is the outer function which is also a multiprocess

p = Process(target=api.queue_processor, args=(process_queue_in, process_queue_out, process_lock,
                                          command_queue_in, command_queue_out, api.OBJECTIVE_0_5NA, quit_event,
                                          log_file))
p.start()

This is the function which is getting called

def queue_processor(process_queue_in, process_queue_out, process_lock,command_queue_in, command_queue_out, objective_type_NA, quit_event,log_file=None):
  
                    slide, roi_coordinates = process_obj[0]
                    logger.info("Received for imaging {} with ROI {} and type {}".format(slide.tile_dir,
                                                                                         roi_coordinates,
                                                                                         slide.slide_type))

                    p = Process(target=iad.image_slide,
                                args=(slide.tile_dir, slide.slide_type, roi_coordinates, exception_queue,
                                      objective_type_NA, logger, clog_path))
                    p.start() #process to kill

I want to kill the second multiprocess.(commented)

Answer 1

We can kill or terminate a process immediately by using the terminate() method. We will use this method to terminate the child process, which has been created with the help of function, immediately before completing its execution.

import multiprocessing
import time
def Child_process():
   print ('Starting function')
   time.sleep(5)
   print ('Finished function')
P = multiprocessing.Process(target = Child_process)
P.start()
print("My Process has terminated, terminating main thread")
print("Terminating Child Process")
P.terminate()
print("Child Process successfully terminated")