class Producer(object):
def __init__(self):
self.data = {}
self.data[0] = 1
self.rwlock = RWLock()
def produce(self):
with self.rwlock.write_lock():
old = self.data
self.data = {}
self.data[0] = 42
old[0] = 2
def consume_1(self):
with self.rwlock.read_lock():
assert_that(self.data[0] == 1 or
self.data[0] == 42, is_(True))
def consume_2(self):
with self.rwlock.read_lock():
assert_that(self.data[0] == 1 or
self.data[0] == 42, is_(True))
def __init__(self):
self.data = {}
self.data[0] = 1
self.rwlock = RWLock()
