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import gc
import sys
import unittest
import weakref
import greenlet
def _live_greenlet_body():
g = greenlet.getcurrent()
try:
g.parent.switch(g)
finally:
pass #print "live_greenlet_body dying"
class GCTests(unittest.TestCase):
def test_circular_greenlet(self):
class circular_greenlet(greenlet.greenlet):
pass
o = circular_greenlet()
o.self = o
o = weakref.ref(o)
gc.collect()
if gc.garbage:
#print gc.garbage
self.assertFalse(gc.garbage)
self.assertTrue(o() is None)
def test_dead_circular_ref(self):
if not greenlet.GREENLET_USE_GC:
#print >>sys.stderr, "skipped", sys._getframe().f_code.co_name
return
o = weakref.ref(greenlet.greenlet(greenlet.getcurrent).switch())
gc.collect()
if gc.garbage:
#print gc.garbage
self.assertFalse(gc.garbage)
self.assertTrue(o() is None)
def test_live_circular_ref(self):
if not greenlet.GREENLET_USE_GC:
#print >>sys.stderr, "skipped", sys._getframe().f_code.co_name
return
o = weakref.ref(greenlet.greenlet(_live_greenlet_body).switch())
gc.collect()
if gc.garbage:
#print gc.garbage
self.assertFalse(gc.garbage)
self.assertTrue(o() is None)
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