system wide mutex

Sun Feb 9 11:14:44 EST 2014

Asaf Las <roegltd at gmail.com>:
> Which one is most recommended to use for mutex alike locking to 
> achieve atomic access to single resource:
>> - fcntl.lockf

I recommend fcntl.flock:
========================================================================
#!/usr/bin/python3
import sys, fcntl, time
with open("test.lock", "w+") as lock:
 fcntl.flock(lock.fileno(), fcntl.LOCK_EX)
 # begin critical
 sys.stdout.write("hello\n")
 time.sleep(3)
 sys.stdout.write("world\n")
 # end critical
========================================================================
Marko