I want to play with the thread-bugs with PyGTK. I have this code so far:
#!/usr/bin/python
import pygtk
pygtk.require('2.0')
import gtk
import threading
from time import sleep
class SomeNonGUIThread(threading.Thread):
def __init__(self, tid):
super(SomeNonGUIThread, self).__init__()
self.tid = tid
def run(self):
while True:
print "Client #%d" % self.tid
sleep(0.5)
class App(threading.Thread):
def __init__(self):
super(App, self).__init__()
self.window = gtk.Window()
self.window.set_size_request(300, 300)
self.window.set_position(gtk.WIN_POS_CENTER)
self.window.connect('destroy', gtk.main_quit)
self.window.show_all()
def run(self):
print "Main start"
gtk.main()
print "Main end"
if __name__ == "__main__":
app = App()
threads = []
for i in range(5):
t = SomeNonGUIThread(i)
threads.append(t)
# Ready, set, go!
for t in threads:
t.start()
# Threads work so well so far
sleep(3)
# And now, they freeze :-(
app.start()
It does that NonGUIThreads are running for 3 seconds concurently. Afterwards, the window is shown and other threads are stoped! After closing the window, threads are running again.
How it is possible, that gtk.main() is able to block other threads? The threads do not depend on any lock, so they should work during the window is shown.
