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'''
t1_ordered_dict.py - this file is part of S3QL (http://s3ql.googlecode.com)
Copyright (C) 2008-2009 Nikolaus Rath <Nikolaus@rath.org>
This program can be distributed under the terms of the GNU LGPL.
'''
from __future__ import division, print_function
import unittest2 as unittest
from s3ql.multi_lock import MultiLock
import time
from s3ql.common import AsyncFn
from _common import TestCase
BASE_DELAY = 1
@unittest.skip('takes too long')
class MultiLockTests(TestCase):
def test_lock(self):
mlock = MultiLock()
key = (22, 'bar')
def hold():
mlock.acquire(key)
time.sleep(2 * BASE_DELAY)
mlock.release(key)
t = AsyncFn(hold)
t.start()
time.sleep(BASE_DELAY)
stamp = time.time()
with mlock(key):
pass
self.assertTrue(time.time() - stamp > BASE_DELAY)
t.join_and_raise()
def test_nolock(self):
mlock = MultiLock()
key1 = (22, 'bar')
key2 = (23, 'bar')
def hold():
mlock.acquire(key1)
time.sleep(2 * BASE_DELAY)
mlock.release(key1)
t = AsyncFn(hold)
t.start()
time.sleep(BASE_DELAY)
stamp = time.time()
with mlock(key2):
pass
self.assertTrue(time.time() - stamp < BASE_DELAY)
t.join_and_raise()
def test_multi(self):
mlock = MultiLock()
key = (22, 'bar')
def lock():
mlock.acquire(key)
def unlock():
time.sleep(2 * BASE_DELAY)
mlock.release(key)
t1 = AsyncFn(lock)
t1.start()
t1.join_and_raise()
t2 = AsyncFn(unlock)
t2.start()
stamp = time.time()
with mlock(key):
pass
self.assertTrue(time.time() - stamp > BASE_DELAY)
t2.join_and_raise()
def suite():
return unittest.makeSuite(MultiLockTests)
if __name__ == "__main__":
unittest.main()
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