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psutil_process_suspend.py

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import logging

import sys

import threading

import time

import psutil

logging.basicConfig(stream=sys.stderr, level=logging.INFO)

if __name__ == "__main__":

p = psutil.Process()

logging.info("running pid = %s", p.pid)

def worker():

i = 0

while True:

i += 1

if i % 100000000 == 0:

logging.info("still working")

new_thread = threading.Thread(target=worker)

new_thread.daemon = True

new_thread.start()

# use top to observe the TIME+ column, threads in this process will also stop working

time.sleep(10)

logging.info("try to suspend pid = %s", p.pid)

p.suspend()

logging.info("can reach here ? try p.resume() in another process")