import threading | |
import time | |
import sys | |
import signal | |
if 'deadlock' in sys.argv: | |
lock = threading.Lock() | |
def trap(sig, frame): | |
lock.acquire() | |
# get the lock once | |
lock.acquire() | |
# and take it again on SIGTERM signal: deadlock. | |
signal.signal(signal.SIGTERM, trap) | |
while 1: | |
time.sleep(1) |