Hello list,
I have a strange problem with os.walk and threads in python script. I
have one script that create some threads and consume Queue. For every
value in Queue this script run os.walk() and printing root dir. But if i
increase number of threads the result are inconsistent compared with one
thread.
For example, run this code plus sort with one thread and after run again
with ten threads and see diff(1).
--code--
#!/usr/local/bin/python
import os, time, glob
import Queue
import threading
EXIT=False
POOL=Queue.Queue(0)
NRO_THREADS=1
#NRO_THREADS=10
class Worker(threading.Thread):
def run(self):
global POOL, EXIT
while True:
try:
mydir=POOL.get(timeout=1)
if mydir == None:
continue
for root, dirs, files in os.walk(mydir):
print root
except Queue.Empty:
if EXIT:
break
else:
continue
except KeyboardInterrupt:
break
except Exception:
raise
for x in xrange(NRO_THREADS):
Worker().start()
try:
for i in glob.glob('/usr/ports/*'):
POOL.put(i)
while not POOL.empty():
time.sleep(1)
EXIT = True
while (threading.activeCount() 1):
time.sleep(1)
except KeyboardInterrupt:
EXIT=True
--code--
If someone can help with this i appreciate.
Regards
--
Marcus Alves Grando
marcus(at)sbh.eng.br | Personal
mnag(at)FreeBSD.org | FreeBSD.org
