# Chapter 5/shared_ipc.py
import time
from threading import Thread, current_thread

SIZE = 5
shared_memory = [-1] * SIZE ----- ➊

class Producer(Thread):
    def run(self) -> None:
        self.name = "Producer"
        global shared_memory
        for i in range(SIZE):
            print(f"{current_thread().name}: 데이터 쓰기 {int(i)}")
            shared_memory[i - 1] = I  ----- ➋

class Consumer(Thread):
    def run(self) -> None:
        self.name = "Consumer"
        global shared_memory
        for i in range(SIZE):