from multiprocessing import shared_memory, Process
import time


def print_memory(shm_name):
    shm = shared_memory.SharedMemory(name=shm_name)
    size = 1727

    t0 = time.time()
    for i in range(100000):
        bytes(shm.buf[i * size:size * (i + 1)])
    print("read elapsed: %.6fs" % (time.time() - t0))


def main():
    shm = shared_memory.SharedMemory(create=True, size=172700000)
    print(shm.name)

    v = bytes(
        '09608585587           04leon                     06soccer                   06209396    161143492113251399                             034Santos Fc Ica vs Deportivo Coopsol                                                                                                                                                                                                                             013Santos Fc Ica                                                                                                                                                                                                                                                  017Deportivo Coopsol                                                                                                                                                                                                                                              0140:0 (0:0) 1:00                                                                                                                                                                                                                                                 048Сегунда Дивизион, Плей-офф                                                                                                                                                                                                               130https://www.leon.ru/events/Soccer/1143492094952472-Peru-Segunda-Division-Playoffs/1143492113251399-Santos-Fc-Ica-Deportivo-Coopsol                                                                                                                             1010                   015742797311574279731',
        encoding='utf-8'
    )
    size = len(v)
    print("size of data item: ", size)

    t0 = time.time()
    for i in range(100000):
        shm.buf[i * size:size * (i + 1)] = bytearray(v)
    print("write elapsed: %.6fs" % (time.time() - t0))

    p = Process(target=print_memory, args=(shm.name,))
    p.start()
    p.join()

    shm.close()
    shm.unlink()


if __name__ == '__main__':
    main()