I have simple PyGTK app. Since I have to run multiple periodic tasks to fetch some data and refresh GUI, I extended Thread like this:
class MyThread(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.setDaemon(True)
self.event = threading.Event()
self.event.set()
def run(self):
while self.event.is_set():
timer = threading.Timer(60, self._run)
timer.start()
timer.join()
def cancel(self):
self.event.clear()
def _run(self):
gtk.threads_enter()
# do what need to be done, fetch data, update GUI
gtk.threads_leave()
I start threads on app bootstrap, save them in some list and cancel them before exit. This works just perfect.
But now I want to add refresh button which will force one of the threads to run immediately and not wait period of time to be run, if not currently running.
I tried to do that by adding bool var to MyThread to indicate whether a thread is running or not (set before _run, reset on complete), and then just call MyThread._run() if not running, but that causes my app to become unresponsive and _run task to never finish execution.
I'm not sure why this happens. What is the best way to solve this problem? It would be also fine if I can make refresh running in background so it does not block GUI.
Maybe to call run and pass in number of seconds to 1 so timer can trigger it sooner?
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