On 21/02/2013 06:04, Rita wrote:
Hello,
Here is what I am trying to do. (Currently, I am doing this in cron but
i need much more granularity). I am trying to run program every 20 secs
and loop forever. I have several of these types of processes, some
should run every 5 mins, 10 secs, 20 secs, 1 min and so forth. I was
wondering what is the best way to do this?
Also, would Greenlet do something I am asking for?
Don't know if this helps, but ...
I have a program with a main loop that listens for input, and
simultaneously I need to run something in the background on a regular
basis. I use the threading module, like this.
import threading
class Check(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.event = threading.Event()
def run(self):
event = self.event # make local
while not event.is_set():
[run your activity here]
event.wait(10) # check every 10 seconds
def stop(self):
self.event.set()
Before the main loop starts, I have -
check = Check()
check.start()
When the main loop ends, I have -
check.stop()
check.join()
For multiple activities, you could have one class per activity, or have
a generic class, and pass in the executable and the timeout as parameters.
HTH
Frank Millman
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