# process4.py to use shared memory using the server process

import multiprocessing
from multiprocessing import Process

def insert_data (dict1, code, subject):
    dict1[code] =  subject

def output(dict1):
    print("Dictionary data: ", dict1)

with multiprocessing.Manager() as mgr:
    # create a dictionary in the server process
    mydict = mgr.dict({100: "Maths", 200: "Science"})

    p1 = Process(target=insert_data, args=(mydict, 300, "English"))
    p2 = Process(target=insert_data, args=(mydict, 400, "French"))
    p3 = Process(target=output, args=(mydict,))

    p1.start()
    p2.start()

    p1.join()
    p2.join()

    p3.start()
    p3.join()

print("Exiting the main process")