Created
November 20, 2020 08:07
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multiprocess_demo
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| # -*- coding: utf-8 -*- | |
| from multiprocessing import Process, Lock | |
| from time import sleep | |
| import sys | |
| from time import time | |
| def worker(lock, i, start, sleep_second): | |
| lock.acquire() | |
| try: | |
| sleep(sleep_second) | |
| except Exception as e: | |
| print(f"Error:{e}") | |
| finally: | |
| lock.release() | |
| if __name__ == "__main__": | |
| lock = Lock() | |
| failed = [] | |
| for i in range(4): | |
| start = time() | |
| sleep_second = [4, 1, 0, 4][i] | |
| print(f"[*] Start({i}):{time()-start}/{sleep_second}") | |
| process = Process(target=worker, args=(lock, i, start, sleep_second)) | |
| process.start() | |
| sleep(3) | |
| if not lock.acquire(False): | |
| print(f"[-] Fail({i}):{time()-start}") | |
| failed += [i] | |
| else: | |
| print(f"[+] Success({i}):{time()-start}") | |
| lock.release() | |
| print(f"[*] Kill Process({i})\n") | |
| process.terminate() | |
| process.join() | |
| print(f"[*] Failed:{failed}") |
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