root / test / ganeti.locking_unittest.py @ 25231ec5
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#!/usr/bin/python
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#
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# Copyright (C) 2006, 2007 Google Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 0.0510-1301, USA.
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"""Script for unittesting the locking module"""
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import os |
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import unittest |
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import time |
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import Queue |
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import threading |
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from ganeti import locking |
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from ganeti import errors |
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import testutils |
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# This is used to test the ssynchronize decorator.
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# Since it's passed as input to a decorator it must be declared as a global.
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_decoratorlock = locking.SharedLock() |
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#: List for looping tests
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ITERATIONS = range(8) |
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def _Repeat(fn): |
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"""Decorator for executing a function many times"""
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def wrapper(*args, **kwargs): |
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for i in ITERATIONS: |
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fn(*args, **kwargs) |
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return wrapper
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def SafeSleep(duration): |
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start = time.time() |
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while True: |
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delay = start + duration - time.time() |
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if delay <= 0.0: |
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break
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time.sleep(delay) |
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class _ThreadedTestCase(unittest.TestCase): |
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"""Test class that supports adding/waiting on threads"""
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def setUp(self): |
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unittest.TestCase.setUp(self)
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self.done = Queue.Queue(0) |
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self.threads = []
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def _addThread(self, *args, **kwargs): |
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"""Create and remember a new thread"""
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t = threading.Thread(*args, **kwargs) |
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self.threads.append(t)
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t.start() |
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return t
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def _waitThreads(self): |
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"""Wait for all our threads to finish"""
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for t in self.threads: |
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t.join(60)
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self.failIf(t.isAlive())
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self.threads = []
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class _ConditionTestCase(_ThreadedTestCase): |
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"""Common test case for conditions"""
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def setUp(self, cls): |
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_ThreadedTestCase.setUp(self)
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self.lock = threading.Lock()
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self.cond = cls(self.lock) |
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def _testAcquireRelease(self): |
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self.assert_(not self.cond._is_owned()) |
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self.assertRaises(RuntimeError, self.cond.wait) |
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self.assertRaises(RuntimeError, self.cond.notifyAll) |
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self.cond.acquire()
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self.assert_(self.cond._is_owned()) |
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self.cond.notifyAll()
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self.assert_(self.cond._is_owned()) |
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self.cond.release()
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self.assert_(not self.cond._is_owned()) |
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self.assertRaises(RuntimeError, self.cond.wait) |
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self.assertRaises(RuntimeError, self.cond.notifyAll) |
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def _testNotification(self): |
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def _NotifyAll(): |
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self.done.put("NE") |
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self.cond.acquire()
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self.done.put("NA") |
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self.cond.notifyAll()
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self.done.put("NN") |
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self.cond.release()
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self.cond.acquire()
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self._addThread(target=_NotifyAll)
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self.assertEqual(self.done.get(True, 1), "NE") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.cond.wait()
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self.assertEqual(self.done.get(True, 1), "NA") |
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self.assertEqual(self.done.get(True, 1), "NN") |
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self.assert_(self.cond._is_owned()) |
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self.cond.release()
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self.assert_(not self.cond._is_owned()) |
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class TestSingleNotifyPipeCondition(_ConditionTestCase): |
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"""SingleNotifyPipeCondition tests"""
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def setUp(self): |
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_ConditionTestCase.setUp(self, locking.SingleNotifyPipeCondition)
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def testAcquireRelease(self): |
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self._testAcquireRelease()
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def testNotification(self): |
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self._testNotification()
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def testWaitReuse(self): |
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self.cond.acquire()
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self.cond.wait(0) |
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self.cond.wait(0.1) |
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self.cond.release()
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def testNoNotifyReuse(self): |
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self.cond.acquire()
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self.cond.notifyAll()
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self.assertRaises(RuntimeError, self.cond.wait) |
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self.assertRaises(RuntimeError, self.cond.notifyAll) |
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self.cond.release()
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class TestPipeCondition(_ConditionTestCase): |
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"""PipeCondition tests"""
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def setUp(self): |
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_ConditionTestCase.setUp(self, locking.PipeCondition)
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def testAcquireRelease(self): |
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self._testAcquireRelease()
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def testNotification(self): |
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self._testNotification()
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def _TestWait(self, fn): |
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self._addThread(target=fn)
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self._addThread(target=fn)
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self._addThread(target=fn)
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# Wait for threads to be waiting
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self.assertEqual(self.done.get(True, 1), "A") |
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self.assertEqual(self.done.get(True, 1), "A") |
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self.assertEqual(self.done.get(True, 1), "A") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.cond.acquire()
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self.assertEqual(self.cond._nwaiters, 3) |
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# This new thread can"t acquire the lock, and thus call wait, before we
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# release it
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self._addThread(target=fn)
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self.cond.notifyAll()
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.cond.release()
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# We should now get 3 W and 1 A (for the new thread) in whatever order
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w = 0
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a = 0
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for i in range(4): |
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got = self.done.get(True, 1) |
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if got == "W": |
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w += 1
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elif got == "A": |
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a += 1
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else:
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self.fail("Got %s on the done queue" % got) |
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self.assertEqual(w, 3) |
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self.assertEqual(a, 1) |
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self.cond.acquire()
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self.cond.notifyAll()
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self.cond.release()
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self._waitThreads()
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self.assertEqual(self.done.get_nowait(), "W") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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def testBlockingWait(self): |
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def _BlockingWait(): |
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self.cond.acquire()
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self.done.put("A") |
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self.cond.wait()
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self.cond.release()
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self.done.put("W") |
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self._TestWait(_BlockingWait)
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def testLongTimeoutWait(self): |
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def _Helper(): |
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self.cond.acquire()
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self.done.put("A") |
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self.cond.wait(15.0) |
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self.cond.release()
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self.done.put("W") |
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self._TestWait(_Helper)
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def _TimeoutWait(self, timeout, check): |
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self.cond.acquire()
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self.cond.wait(timeout)
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self.cond.release()
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self.done.put(check)
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def testShortTimeoutWait(self): |
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self._addThread(target=self._TimeoutWait, args=(0.1, "T1")) |
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self._addThread(target=self._TimeoutWait, args=(0.1, "T1")) |
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self._waitThreads()
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self.assertEqual(self.done.get_nowait(), "T1") |
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self.assertEqual(self.done.get_nowait(), "T1") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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def testZeroTimeoutWait(self): |
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self._addThread(target=self._TimeoutWait, args=(0, "T0")) |
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self._addThread(target=self._TimeoutWait, args=(0, "T0")) |
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self._addThread(target=self._TimeoutWait, args=(0, "T0")) |
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self._waitThreads()
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self.assertEqual(self.done.get_nowait(), "T0") |
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self.assertEqual(self.done.get_nowait(), "T0") |
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self.assertEqual(self.done.get_nowait(), "T0") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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class TestSharedLock(_ThreadedTestCase): |
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"""SharedLock tests"""
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def setUp(self): |
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_ThreadedTestCase.setUp(self)
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self.sl = locking.SharedLock()
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def testSequenceAndOwnership(self): |
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self.assert_(not self.sl._is_owned()) |
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self.sl.acquire(shared=1) |
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self.assert_(self.sl._is_owned()) |
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self.assert_(self.sl._is_owned(shared=1)) |
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self.assert_(not self.sl._is_owned(shared=0)) |
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self.sl.release()
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self.assert_(not self.sl._is_owned()) |
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self.sl.acquire()
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self.assert_(self.sl._is_owned()) |
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self.assert_(not self.sl._is_owned(shared=1)) |
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self.assert_(self.sl._is_owned(shared=0)) |
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self.sl.release()
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self.assert_(not self.sl._is_owned()) |
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self.sl.acquire(shared=1) |
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self.assert_(self.sl._is_owned()) |
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self.assert_(self.sl._is_owned(shared=1)) |
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self.assert_(not self.sl._is_owned(shared=0)) |
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self.sl.release()
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self.assert_(not self.sl._is_owned()) |
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def testBooleanValue(self): |
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# semaphores are supposed to return a true value on a successful acquire
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self.assert_(self.sl.acquire(shared=1)) |
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self.sl.release()
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self.assert_(self.sl.acquire()) |
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self.sl.release()
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def testDoubleLockingStoE(self): |
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self.sl.acquire(shared=1) |
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self.assertRaises(AssertionError, self.sl.acquire) |
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def testDoubleLockingEtoS(self): |
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self.sl.acquire()
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self.assertRaises(AssertionError, self.sl.acquire, shared=1) |
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def testDoubleLockingStoS(self): |
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self.sl.acquire(shared=1) |
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self.assertRaises(AssertionError, self.sl.acquire, shared=1) |
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def testDoubleLockingEtoE(self): |
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self.sl.acquire()
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self.assertRaises(AssertionError, self.sl.acquire) |
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# helper functions: called in a separate thread they acquire the lock, send
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# their identifier on the done queue, then release it.
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def _doItSharer(self): |
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try:
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self.sl.acquire(shared=1) |
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self.done.put('SHR') |
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self.sl.release()
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except errors.LockError:
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self.done.put('ERR') |
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def _doItExclusive(self): |
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try:
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self.sl.acquire()
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self.done.put('EXC') |
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self.sl.release()
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except errors.LockError:
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self.done.put('ERR') |
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def _doItDelete(self): |
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try:
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self.sl.delete()
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self.done.put('DEL') |
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except errors.LockError:
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self.done.put('ERR') |
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def testSharersCanCoexist(self): |
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self.sl.acquire(shared=1) |
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threading.Thread(target=self._doItSharer).start()
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self.assert_(self.done.get(True, 1)) |
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self.sl.release()
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@_Repeat
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def testExclusiveBlocksExclusive(self): |
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self.sl.acquire()
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self._addThread(target=self._doItExclusive) |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.sl.release()
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self._waitThreads()
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self.failUnlessEqual(self.done.get_nowait(), 'EXC') |
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@_Repeat
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def testExclusiveBlocksDelete(self): |
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self.sl.acquire()
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self._addThread(target=self._doItDelete) |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.sl.release()
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self._waitThreads()
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self.failUnlessEqual(self.done.get_nowait(), 'DEL') |
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self.sl = locking.SharedLock()
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@_Repeat
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def testExclusiveBlocksSharer(self): |
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self.sl.acquire()
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self._addThread(target=self._doItSharer) |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.sl.release()
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self._waitThreads()
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self.failUnlessEqual(self.done.get_nowait(), 'SHR') |
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@_Repeat
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def testSharerBlocksExclusive(self): |
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self.sl.acquire(shared=1) |
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self._addThread(target=self._doItExclusive) |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.sl.release()
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self._waitThreads()
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self.failUnlessEqual(self.done.get_nowait(), 'EXC') |
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@_Repeat
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def testSharerBlocksDelete(self): |
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self.sl.acquire(shared=1) |
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self._addThread(target=self._doItDelete) |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.sl.release()
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self._waitThreads()
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self.failUnlessEqual(self.done.get_nowait(), 'DEL') |
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self.sl = locking.SharedLock()
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@_Repeat
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def testWaitingExclusiveBlocksSharer(self): |
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"""SKIPPED testWaitingExclusiveBlockSharer"""
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return
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self.sl.acquire(shared=1) |
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# the lock is acquired in shared mode...
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self._addThread(target=self._doItExclusive) |
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# ...but now an exclusive is waiting...
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self._addThread(target=self._doItSharer) |
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# ...so the sharer should be blocked as well
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.sl.release()
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self._waitThreads()
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# The exclusive passed before
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self.failUnlessEqual(self.done.get_nowait(), 'EXC') |
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self.failUnlessEqual(self.done.get_nowait(), 'SHR') |
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@_Repeat
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def testWaitingSharerBlocksExclusive(self): |
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"""SKIPPED testWaitingSharerBlocksExclusive"""
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return
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self.sl.acquire()
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# the lock is acquired in exclusive mode...
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self._addThread(target=self._doItSharer) |
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# ...but now a sharer is waiting...
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self._addThread(target=self._doItExclusive) |
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# ...the exclusive is waiting too...
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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self.sl.release()
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self._waitThreads()
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# The sharer passed before
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self.assertEqual(self.done.get_nowait(), 'SHR') |
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self.assertEqual(self.done.get_nowait(), 'EXC') |
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def testDelete(self): |
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self.sl.delete()
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self.assertRaises(errors.LockError, self.sl.acquire) |
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self.assertRaises(errors.LockError, self.sl.acquire, shared=1) |
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self.assertRaises(errors.LockError, self.sl.delete) |
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def testDeleteTimeout(self): |
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self.sl.delete(timeout=60) |
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def testNoDeleteIfSharer(self): |
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self.sl.acquire(shared=1) |
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self.assertRaises(AssertionError, self.sl.delete) |
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@_Repeat
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def testDeletePendingSharersExclusiveDelete(self): |
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self.sl.acquire()
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self._addThread(target=self._doItSharer) |
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self._addThread(target=self._doItSharer) |
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self._addThread(target=self._doItExclusive) |
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self._addThread(target=self._doItDelete) |
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self.sl.delete()
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self._waitThreads()
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# The threads who were pending return ERR
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for _ in range(4): |
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self.assertEqual(self.done.get_nowait(), 'ERR') |
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self.sl = locking.SharedLock()
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@_Repeat
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def testDeletePendingDeleteExclusiveSharers(self): |
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self.sl.acquire()
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self._addThread(target=self._doItDelete) |
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self._addThread(target=self._doItExclusive) |
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self._addThread(target=self._doItSharer) |
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self._addThread(target=self._doItSharer) |
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self.sl.delete()
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self._waitThreads()
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# The two threads who were pending return both ERR
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self.assertEqual(self.done.get_nowait(), 'ERR') |
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self.assertEqual(self.done.get_nowait(), 'ERR') |
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self.assertEqual(self.done.get_nowait(), 'ERR') |
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self.assertEqual(self.done.get_nowait(), 'ERR') |
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self.sl = locking.SharedLock()
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@_Repeat
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def testExclusiveAcquireTimeout(self): |
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for shared in [0, 1]: |
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on_queue = threading.Event() |
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release_exclusive = threading.Event() |
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def _LockExclusive(): |
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self.sl.acquire(shared=0, test_notify=on_queue.set) |
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self.done.put("A: start wait") |
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release_exclusive.wait() |
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self.done.put("A: end wait") |
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self.sl.release()
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# Start thread to hold lock in exclusive mode
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self._addThread(target=_LockExclusive)
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# Wait for wait to begin
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self.assertEqual(self.done.get(timeout=60), "A: start wait") |
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# Wait up to 60s to get lock, but release exclusive lock as soon as we're
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# on the queue
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self.failUnless(self.sl.acquire(shared=shared, timeout=60, |
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test_notify=release_exclusive.set)) |
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self.done.put("got 2nd") |
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self.sl.release()
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self._waitThreads()
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self.assertEqual(self.done.get_nowait(), "A: end wait") |
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self.assertEqual(self.done.get_nowait(), "got 2nd") |
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self.assertRaises(Queue.Empty, self.done.get_nowait) |
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@_Repeat
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def testAcquireExpiringTimeout(self): |
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def _AcquireWithTimeout(shared, timeout): |
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if not self.sl.acquire(shared=shared, timeout=timeout): |
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self.done.put("timeout") |
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for shared in [0, 1]: |
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# Lock exclusively
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self.sl.acquire()
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# Start shared acquires with timeout between 0 and 20 ms
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for i in range(11): |
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self._addThread(target=_AcquireWithTimeout,
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args=(shared, i * 2.0 / 1000.0)) |
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# Wait for threads to finish (makes sure the acquire timeout expires
|
511 |
# before releasing the lock)
|
512 |
self._waitThreads()
|
513 |
|
514 |
# Release lock
|
515 |
self.sl.release()
|
516 |
|
517 |
for _ in range(11): |
518 |
self.assertEqual(self.done.get_nowait(), "timeout") |
519 |
|
520 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
521 |
|
522 |
@_Repeat
|
523 |
def testSharedSkipExclusiveAcquires(self): |
524 |
# Tests whether shared acquires jump in front of exclusive acquires in the
|
525 |
# queue.
|
526 |
|
527 |
def _Acquire(shared, name, notify_ev, wait_ev): |
528 |
if notify_ev:
|
529 |
notify_fn = notify_ev.set |
530 |
else:
|
531 |
notify_fn = None
|
532 |
|
533 |
if wait_ev:
|
534 |
wait_ev.wait() |
535 |
|
536 |
if not self.sl.acquire(shared=shared, test_notify=notify_fn): |
537 |
return
|
538 |
|
539 |
self.done.put(name)
|
540 |
self.sl.release()
|
541 |
|
542 |
# Get exclusive lock while we fill the queue
|
543 |
self.sl.acquire()
|
544 |
|
545 |
shrcnt1 = 5
|
546 |
shrcnt2 = 7
|
547 |
shrcnt3 = 9
|
548 |
shrcnt4 = 2
|
549 |
|
550 |
# Add acquires using threading.Event for synchronization. They'll be
|
551 |
# acquired exactly in the order defined in this list.
|
552 |
acquires = (shrcnt1 * [(1, "shared 1")] + |
553 |
3 * [(0, "exclusive 1")] + |
554 |
shrcnt2 * [(1, "shared 2")] + |
555 |
shrcnt3 * [(1, "shared 3")] + |
556 |
shrcnt4 * [(1, "shared 4")] + |
557 |
3 * [(0, "exclusive 2")]) |
558 |
|
559 |
ev_cur = None
|
560 |
ev_prev = None
|
561 |
|
562 |
for args in acquires: |
563 |
ev_cur = threading.Event() |
564 |
self._addThread(target=_Acquire, args=args + (ev_cur, ev_prev))
|
565 |
ev_prev = ev_cur |
566 |
|
567 |
# Wait for last acquire to start
|
568 |
ev_prev.wait() |
569 |
|
570 |
# Expect 6 pending exclusive acquires and 1 for all shared acquires
|
571 |
# together
|
572 |
self.assertEqual(self.sl._count_pending(), 7) |
573 |
|
574 |
# Release exclusive lock and wait
|
575 |
self.sl.release()
|
576 |
|
577 |
self._waitThreads()
|
578 |
|
579 |
# Check sequence
|
580 |
for _ in range(shrcnt1 + shrcnt2 + shrcnt3 + shrcnt4): |
581 |
# Shared locks aren't guaranteed to be notified in order, but they'll be
|
582 |
# first
|
583 |
tmp = self.done.get_nowait()
|
584 |
if tmp == "shared 1": |
585 |
shrcnt1 -= 1
|
586 |
elif tmp == "shared 2": |
587 |
shrcnt2 -= 1
|
588 |
elif tmp == "shared 3": |
589 |
shrcnt3 -= 1
|
590 |
elif tmp == "shared 4": |
591 |
shrcnt4 -= 1
|
592 |
self.assertEqual(shrcnt1, 0) |
593 |
self.assertEqual(shrcnt2, 0) |
594 |
self.assertEqual(shrcnt3, 0) |
595 |
self.assertEqual(shrcnt3, 0) |
596 |
|
597 |
for _ in range(3): |
598 |
self.assertEqual(self.done.get_nowait(), "exclusive 1") |
599 |
|
600 |
for _ in range(3): |
601 |
self.assertEqual(self.done.get_nowait(), "exclusive 2") |
602 |
|
603 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
604 |
|
605 |
@_Repeat
|
606 |
def testMixedAcquireTimeout(self): |
607 |
sync = threading.Condition() |
608 |
|
609 |
def _AcquireShared(ev): |
610 |
if not self.sl.acquire(shared=1, timeout=None): |
611 |
return
|
612 |
|
613 |
self.done.put("shared") |
614 |
|
615 |
# Notify main thread
|
616 |
ev.set() |
617 |
|
618 |
# Wait for notification
|
619 |
sync.acquire() |
620 |
try:
|
621 |
sync.wait() |
622 |
finally:
|
623 |
sync.release() |
624 |
|
625 |
# Release lock
|
626 |
self.sl.release()
|
627 |
|
628 |
acquires = [] |
629 |
for _ in range(3): |
630 |
ev = threading.Event() |
631 |
self._addThread(target=_AcquireShared, args=(ev, ))
|
632 |
acquires.append(ev) |
633 |
|
634 |
# Wait for all acquires to finish
|
635 |
for i in acquires: |
636 |
i.wait() |
637 |
|
638 |
self.assertEqual(self.sl._count_pending(), 0) |
639 |
|
640 |
# Try to get exclusive lock
|
641 |
self.failIf(self.sl.acquire(shared=0, timeout=0.02)) |
642 |
|
643 |
# Acquire exclusive without timeout
|
644 |
exclsync = threading.Condition() |
645 |
exclev = threading.Event() |
646 |
|
647 |
def _AcquireExclusive(): |
648 |
if not self.sl.acquire(shared=0): |
649 |
return
|
650 |
|
651 |
self.done.put("exclusive") |
652 |
|
653 |
# Notify main thread
|
654 |
exclev.set() |
655 |
|
656 |
exclsync.acquire() |
657 |
try:
|
658 |
exclsync.wait() |
659 |
finally:
|
660 |
exclsync.release() |
661 |
|
662 |
self.sl.release()
|
663 |
|
664 |
self._addThread(target=_AcquireExclusive)
|
665 |
|
666 |
# Try to get exclusive lock
|
667 |
self.failIf(self.sl.acquire(shared=0, timeout=0.02)) |
668 |
|
669 |
# Make all shared holders release their locks
|
670 |
sync.acquire() |
671 |
try:
|
672 |
sync.notifyAll() |
673 |
finally:
|
674 |
sync.release() |
675 |
|
676 |
# Wait for exclusive acquire to succeed
|
677 |
exclev.wait() |
678 |
|
679 |
self.assertEqual(self.sl._count_pending(), 0) |
680 |
|
681 |
# Try to get exclusive lock
|
682 |
self.failIf(self.sl.acquire(shared=0, timeout=0.02)) |
683 |
|
684 |
def _AcquireSharedSimple(): |
685 |
if self.sl.acquire(shared=1, timeout=None): |
686 |
self.done.put("shared2") |
687 |
self.sl.release()
|
688 |
|
689 |
for _ in range(10): |
690 |
self._addThread(target=_AcquireSharedSimple)
|
691 |
|
692 |
# Tell exclusive lock to release
|
693 |
exclsync.acquire() |
694 |
try:
|
695 |
exclsync.notifyAll() |
696 |
finally:
|
697 |
exclsync.release() |
698 |
|
699 |
# Wait for everything to finish
|
700 |
self._waitThreads()
|
701 |
|
702 |
self.assertEqual(self.sl._count_pending(), 0) |
703 |
|
704 |
# Check sequence
|
705 |
for _ in range(3): |
706 |
self.assertEqual(self.done.get_nowait(), "shared") |
707 |
|
708 |
self.assertEqual(self.done.get_nowait(), "exclusive") |
709 |
|
710 |
for _ in range(10): |
711 |
self.assertEqual(self.done.get_nowait(), "shared2") |
712 |
|
713 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
714 |
|
715 |
|
716 |
class TestSSynchronizedDecorator(_ThreadedTestCase): |
717 |
"""Shared Lock Synchronized decorator test"""
|
718 |
|
719 |
def setUp(self): |
720 |
_ThreadedTestCase.setUp(self)
|
721 |
|
722 |
@locking.ssynchronized(_decoratorlock)
|
723 |
def _doItExclusive(self): |
724 |
self.assert_(_decoratorlock._is_owned())
|
725 |
self.done.put('EXC') |
726 |
|
727 |
@locking.ssynchronized(_decoratorlock, shared=1) |
728 |
def _doItSharer(self): |
729 |
self.assert_(_decoratorlock._is_owned(shared=1)) |
730 |
self.done.put('SHR') |
731 |
|
732 |
def testDecoratedFunctions(self): |
733 |
self._doItExclusive()
|
734 |
self.assert_(not _decoratorlock._is_owned()) |
735 |
self._doItSharer()
|
736 |
self.assert_(not _decoratorlock._is_owned()) |
737 |
|
738 |
def testSharersCanCoexist(self): |
739 |
_decoratorlock.acquire(shared=1)
|
740 |
threading.Thread(target=self._doItSharer).start()
|
741 |
self.assert_(self.done.get(True, 1)) |
742 |
_decoratorlock.release() |
743 |
|
744 |
@_Repeat
|
745 |
def testExclusiveBlocksExclusive(self): |
746 |
_decoratorlock.acquire() |
747 |
self._addThread(target=self._doItExclusive) |
748 |
# give it a bit of time to check that it's not actually doing anything
|
749 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
750 |
_decoratorlock.release() |
751 |
self._waitThreads()
|
752 |
self.failUnlessEqual(self.done.get_nowait(), 'EXC') |
753 |
|
754 |
@_Repeat
|
755 |
def testExclusiveBlocksSharer(self): |
756 |
_decoratorlock.acquire() |
757 |
self._addThread(target=self._doItSharer) |
758 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
759 |
_decoratorlock.release() |
760 |
self._waitThreads()
|
761 |
self.failUnlessEqual(self.done.get_nowait(), 'SHR') |
762 |
|
763 |
@_Repeat
|
764 |
def testSharerBlocksExclusive(self): |
765 |
_decoratorlock.acquire(shared=1)
|
766 |
self._addThread(target=self._doItExclusive) |
767 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
768 |
_decoratorlock.release() |
769 |
self._waitThreads()
|
770 |
self.failUnlessEqual(self.done.get_nowait(), 'EXC') |
771 |
|
772 |
|
773 |
class TestLockSet(_ThreadedTestCase): |
774 |
"""LockSet tests"""
|
775 |
|
776 |
def setUp(self): |
777 |
_ThreadedTestCase.setUp(self)
|
778 |
self._setUpLS()
|
779 |
|
780 |
def _setUpLS(self): |
781 |
"""Helper to (re)initialize the lock set"""
|
782 |
self.resources = ['one', 'two', 'three'] |
783 |
self.ls = locking.LockSet(members=self.resources) |
784 |
|
785 |
def testResources(self): |
786 |
self.assertEquals(self.ls._names(), set(self.resources)) |
787 |
newls = locking.LockSet() |
788 |
self.assertEquals(newls._names(), set()) |
789 |
|
790 |
def testAcquireRelease(self): |
791 |
self.assert_(self.ls.acquire('one')) |
792 |
self.assertEquals(self.ls._list_owned(), set(['one'])) |
793 |
self.ls.release()
|
794 |
self.assertEquals(self.ls._list_owned(), set()) |
795 |
self.assertEquals(self.ls.acquire(['one']), set(['one'])) |
796 |
self.assertEquals(self.ls._list_owned(), set(['one'])) |
797 |
self.ls.release()
|
798 |
self.assertEquals(self.ls._list_owned(), set()) |
799 |
self.ls.acquire(['one', 'two', 'three']) |
800 |
self.assertEquals(self.ls._list_owned(), set(['one', 'two', 'three'])) |
801 |
self.ls.release('one') |
802 |
self.assertEquals(self.ls._list_owned(), set(['two', 'three'])) |
803 |
self.ls.release(['three']) |
804 |
self.assertEquals(self.ls._list_owned(), set(['two'])) |
805 |
self.ls.release()
|
806 |
self.assertEquals(self.ls._list_owned(), set()) |
807 |
self.assertEquals(self.ls.acquire(['one', 'three']), set(['one', 'three'])) |
808 |
self.assertEquals(self.ls._list_owned(), set(['one', 'three'])) |
809 |
self.ls.release()
|
810 |
self.assertEquals(self.ls._list_owned(), set()) |
811 |
|
812 |
def testNoDoubleAcquire(self): |
813 |
self.ls.acquire('one') |
814 |
self.assertRaises(AssertionError, self.ls.acquire, 'one') |
815 |
self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
816 |
self.assertRaises(AssertionError, self.ls.acquire, ['two', 'three']) |
817 |
self.ls.release()
|
818 |
self.ls.acquire(['one', 'three']) |
819 |
self.ls.release('one') |
820 |
self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
821 |
self.ls.release('three') |
822 |
|
823 |
def testNoWrongRelease(self): |
824 |
self.assertRaises(AssertionError, self.ls.release) |
825 |
self.ls.acquire('one') |
826 |
self.assertRaises(AssertionError, self.ls.release, 'two') |
827 |
|
828 |
def testAddRemove(self): |
829 |
self.ls.add('four') |
830 |
self.assertEquals(self.ls._list_owned(), set()) |
831 |
self.assert_('four' in self.ls._names()) |
832 |
self.ls.add(['five', 'six', 'seven'], acquired=1) |
833 |
self.assert_('five' in self.ls._names()) |
834 |
self.assert_('six' in self.ls._names()) |
835 |
self.assert_('seven' in self.ls._names()) |
836 |
self.assertEquals(self.ls._list_owned(), set(['five', 'six', 'seven'])) |
837 |
self.assertEquals(self.ls.remove(['five', 'six']), ['five', 'six']) |
838 |
self.assert_('five' not in self.ls._names()) |
839 |
self.assert_('six' not in self.ls._names()) |
840 |
self.assertEquals(self.ls._list_owned(), set(['seven'])) |
841 |
self.assertRaises(AssertionError, self.ls.add, 'eight', acquired=1) |
842 |
self.ls.remove('seven') |
843 |
self.assert_('seven' not in self.ls._names()) |
844 |
self.assertEquals(self.ls._list_owned(), set([])) |
845 |
self.ls.acquire(None, shared=1) |
846 |
self.assertRaises(AssertionError, self.ls.add, 'eight') |
847 |
self.ls.release()
|
848 |
self.ls.acquire(None) |
849 |
self.ls.add('eight', acquired=1) |
850 |
self.assert_('eight' in self.ls._names()) |
851 |
self.assert_('eight' in self.ls._list_owned()) |
852 |
self.ls.add('nine') |
853 |
self.assert_('nine' in self.ls._names()) |
854 |
self.assert_('nine' not in self.ls._list_owned()) |
855 |
self.ls.release()
|
856 |
self.ls.remove(['two']) |
857 |
self.assert_('two' not in self.ls._names()) |
858 |
self.ls.acquire('three') |
859 |
self.assertEquals(self.ls.remove(['three']), ['three']) |
860 |
self.assert_('three' not in self.ls._names()) |
861 |
self.assertEquals(self.ls.remove('three'), []) |
862 |
self.assertEquals(self.ls.remove(['one', 'three', 'six']), ['one']) |
863 |
self.assert_('one' not in self.ls._names()) |
864 |
|
865 |
def testRemoveNonBlocking(self): |
866 |
self.ls.acquire('one') |
867 |
self.assertEquals(self.ls.remove('one'), ['one']) |
868 |
self.ls.acquire(['two', 'three']) |
869 |
self.assertEquals(self.ls.remove(['two', 'three']), |
870 |
['two', 'three']) |
871 |
|
872 |
def testNoDoubleAdd(self): |
873 |
self.assertRaises(errors.LockError, self.ls.add, 'two') |
874 |
self.ls.add('four') |
875 |
self.assertRaises(errors.LockError, self.ls.add, 'four') |
876 |
|
877 |
def testNoWrongRemoves(self): |
878 |
self.ls.acquire(['one', 'three'], shared=1) |
879 |
# Cannot remove 'two' while holding something which is not a superset
|
880 |
self.assertRaises(AssertionError, self.ls.remove, 'two') |
881 |
# Cannot remove 'three' as we are sharing it
|
882 |
self.assertRaises(AssertionError, self.ls.remove, 'three') |
883 |
|
884 |
def testAcquireSetLock(self): |
885 |
# acquire the set-lock exclusively
|
886 |
self.assertEquals(self.ls.acquire(None), set(['one', 'two', 'three'])) |
887 |
self.assertEquals(self.ls._list_owned(), set(['one', 'two', 'three'])) |
888 |
self.assertEquals(self.ls._is_owned(), True) |
889 |
self.assertEquals(self.ls._names(), set(['one', 'two', 'three'])) |
890 |
# I can still add/remove elements...
|
891 |
self.assertEquals(self.ls.remove(['two', 'three']), ['two', 'three']) |
892 |
self.assert_(self.ls.add('six')) |
893 |
self.ls.release()
|
894 |
# share the set-lock
|
895 |
self.assertEquals(self.ls.acquire(None, shared=1), set(['one', 'six'])) |
896 |
# adding new elements is not possible
|
897 |
self.assertRaises(AssertionError, self.ls.add, 'five') |
898 |
self.ls.release()
|
899 |
|
900 |
def testAcquireWithRepetitions(self): |
901 |
self.assertEquals(self.ls.acquire(['two', 'two', 'three'], shared=1), |
902 |
set(['two', 'two', 'three'])) |
903 |
self.ls.release(['two', 'two']) |
904 |
self.assertEquals(self.ls._list_owned(), set(['three'])) |
905 |
|
906 |
def testEmptyAcquire(self): |
907 |
# Acquire an empty list of locks...
|
908 |
self.assertEquals(self.ls.acquire([]), set()) |
909 |
self.assertEquals(self.ls._list_owned(), set()) |
910 |
# New locks can still be addded
|
911 |
self.assert_(self.ls.add('six')) |
912 |
# "re-acquiring" is not an issue, since we had really acquired nothing
|
913 |
self.assertEquals(self.ls.acquire([], shared=1), set()) |
914 |
self.assertEquals(self.ls._list_owned(), set()) |
915 |
# We haven't really acquired anything, so we cannot release
|
916 |
self.assertRaises(AssertionError, self.ls.release) |
917 |
|
918 |
def _doLockSet(self, names, shared): |
919 |
try:
|
920 |
self.ls.acquire(names, shared=shared)
|
921 |
self.done.put('DONE') |
922 |
self.ls.release()
|
923 |
except errors.LockError:
|
924 |
self.done.put('ERR') |
925 |
|
926 |
def _doAddSet(self, names): |
927 |
try:
|
928 |
self.ls.add(names, acquired=1) |
929 |
self.done.put('DONE') |
930 |
self.ls.release()
|
931 |
except errors.LockError:
|
932 |
self.done.put('ERR') |
933 |
|
934 |
def _doRemoveSet(self, names): |
935 |
self.done.put(self.ls.remove(names)) |
936 |
|
937 |
@_Repeat
|
938 |
def testConcurrentSharedAcquire(self): |
939 |
self.ls.acquire(['one', 'two'], shared=1) |
940 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 1)) |
941 |
self._waitThreads()
|
942 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
943 |
self._addThread(target=self._doLockSet, args=(['one', 'two', 'three'], 1)) |
944 |
self._waitThreads()
|
945 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
946 |
self._addThread(target=self._doLockSet, args=('three', 1)) |
947 |
self._waitThreads()
|
948 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
949 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 0)) |
950 |
self._addThread(target=self._doLockSet, args=(['two', 'three'], 0)) |
951 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
952 |
self.ls.release()
|
953 |
self._waitThreads()
|
954 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
955 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
956 |
|
957 |
@_Repeat
|
958 |
def testConcurrentExclusiveAcquire(self): |
959 |
self.ls.acquire(['one', 'two']) |
960 |
self._addThread(target=self._doLockSet, args=('three', 1)) |
961 |
self._waitThreads()
|
962 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
963 |
self._addThread(target=self._doLockSet, args=('three', 0)) |
964 |
self._waitThreads()
|
965 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
966 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
967 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 0)) |
968 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 1)) |
969 |
self._addThread(target=self._doLockSet, args=('one', 0)) |
970 |
self._addThread(target=self._doLockSet, args=('one', 1)) |
971 |
self._addThread(target=self._doLockSet, args=(['two', 'three'], 0)) |
972 |
self._addThread(target=self._doLockSet, args=(['two', 'three'], 1)) |
973 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
974 |
self.ls.release()
|
975 |
self._waitThreads()
|
976 |
for _ in range(6): |
977 |
self.failUnlessEqual(self.done.get_nowait(), 'DONE') |
978 |
|
979 |
@_Repeat
|
980 |
def testSimpleAcquireTimeoutExpiring(self): |
981 |
names = sorted(self.ls._names()) |
982 |
self.assert_(len(names) >= 3) |
983 |
|
984 |
# Get name of first lock
|
985 |
first = names[0]
|
986 |
|
987 |
# Get name of last lock
|
988 |
last = names.pop() |
989 |
|
990 |
checks = [ |
991 |
# Block first and try to lock it again
|
992 |
(first, first), |
993 |
|
994 |
# Block last and try to lock all locks
|
995 |
(None, first),
|
996 |
|
997 |
# Block last and try to lock it again
|
998 |
(last, last), |
999 |
] |
1000 |
|
1001 |
for (wanted, block) in checks: |
1002 |
# Lock in exclusive mode
|
1003 |
self.assert_(self.ls.acquire(block, shared=0)) |
1004 |
|
1005 |
def _AcquireOne(): |
1006 |
# Try to get the same lock again with a timeout (should never succeed)
|
1007 |
acquired = self.ls.acquire(wanted, timeout=0.1, shared=0) |
1008 |
if acquired:
|
1009 |
self.done.put("acquired") |
1010 |
self.ls.release()
|
1011 |
else:
|
1012 |
self.assert_(acquired is None) |
1013 |
self.assert_(not self.ls._list_owned()) |
1014 |
self.assert_(not self.ls._is_owned()) |
1015 |
self.done.put("not acquired") |
1016 |
|
1017 |
self._addThread(target=_AcquireOne)
|
1018 |
|
1019 |
# Wait for timeout in thread to expire
|
1020 |
self._waitThreads()
|
1021 |
|
1022 |
# Release exclusive lock again
|
1023 |
self.ls.release()
|
1024 |
|
1025 |
self.assertEqual(self.done.get_nowait(), "not acquired") |
1026 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1027 |
|
1028 |
@_Repeat
|
1029 |
def testDelayedAndExpiringLockAcquire(self): |
1030 |
self._setUpLS()
|
1031 |
self.ls.add(['five', 'six', 'seven', 'eight', 'nine']) |
1032 |
|
1033 |
for expire in (False, True): |
1034 |
names = sorted(self.ls._names()) |
1035 |
self.assertEqual(len(names), 8) |
1036 |
|
1037 |
lock_ev = dict([(i, threading.Event()) for i in names]) |
1038 |
|
1039 |
# Lock all in exclusive mode
|
1040 |
self.assert_(self.ls.acquire(names, shared=0)) |
1041 |
|
1042 |
if expire:
|
1043 |
# We'll wait at least 300ms per lock
|
1044 |
lockwait = len(names) * [0.3] |
1045 |
|
1046 |
# Fail if we can't acquire all locks in 400ms. There are 8 locks, so
|
1047 |
# this gives us up to 2.4s to fail.
|
1048 |
lockall_timeout = 0.4
|
1049 |
else:
|
1050 |
# This should finish rather quickly
|
1051 |
lockwait = None
|
1052 |
lockall_timeout = len(names) * 5.0 |
1053 |
|
1054 |
def _LockAll(): |
1055 |
def acquire_notification(name): |
1056 |
if not expire: |
1057 |
self.done.put("getting %s" % name) |
1058 |
|
1059 |
# Kick next lock
|
1060 |
lock_ev[name].set() |
1061 |
|
1062 |
if self.ls.acquire(names, shared=0, timeout=lockall_timeout, |
1063 |
test_notify=acquire_notification): |
1064 |
self.done.put("got all") |
1065 |
self.ls.release()
|
1066 |
else:
|
1067 |
self.done.put("timeout on all") |
1068 |
|
1069 |
# Notify all locks
|
1070 |
for ev in lock_ev.values(): |
1071 |
ev.set() |
1072 |
|
1073 |
t = self._addThread(target=_LockAll)
|
1074 |
|
1075 |
for idx, name in enumerate(names): |
1076 |
# Wait for actual acquire on this lock to start
|
1077 |
lock_ev[name].wait(10.0)
|
1078 |
|
1079 |
if expire and t.isAlive(): |
1080 |
# Wait some time after getting the notification to make sure the lock
|
1081 |
# acquire will expire
|
1082 |
SafeSleep(lockwait[idx]) |
1083 |
|
1084 |
self.ls.release(names=name)
|
1085 |
|
1086 |
self.assert_(not self.ls._list_owned()) |
1087 |
|
1088 |
self._waitThreads()
|
1089 |
|
1090 |
if expire:
|
1091 |
# Not checking which locks were actually acquired. Doing so would be
|
1092 |
# too timing-dependant.
|
1093 |
self.assertEqual(self.done.get_nowait(), "timeout on all") |
1094 |
else:
|
1095 |
for i in names: |
1096 |
self.assertEqual(self.done.get_nowait(), "getting %s" % i) |
1097 |
self.assertEqual(self.done.get_nowait(), "got all") |
1098 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1099 |
|
1100 |
@_Repeat
|
1101 |
def testConcurrentRemove(self): |
1102 |
self.ls.add('four') |
1103 |
self.ls.acquire(['one', 'two', 'four']) |
1104 |
self._addThread(target=self._doLockSet, args=(['one', 'four'], 0)) |
1105 |
self._addThread(target=self._doLockSet, args=(['one', 'four'], 1)) |
1106 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 0)) |
1107 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 1)) |
1108 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1109 |
self.ls.remove('one') |
1110 |
self.ls.release()
|
1111 |
self._waitThreads()
|
1112 |
for i in range(4): |
1113 |
self.failUnlessEqual(self.done.get_nowait(), 'ERR') |
1114 |
self.ls.add(['five', 'six'], acquired=1) |
1115 |
self._addThread(target=self._doLockSet, args=(['three', 'six'], 1)) |
1116 |
self._addThread(target=self._doLockSet, args=(['three', 'six'], 0)) |
1117 |
self._addThread(target=self._doLockSet, args=(['four', 'six'], 1)) |
1118 |
self._addThread(target=self._doLockSet, args=(['four', 'six'], 0)) |
1119 |
self.ls.remove('five') |
1120 |
self.ls.release()
|
1121 |
self._waitThreads()
|
1122 |
for i in range(4): |
1123 |
self.failUnlessEqual(self.done.get_nowait(), 'DONE') |
1124 |
self.ls.acquire(['three', 'four']) |
1125 |
self._addThread(target=self._doRemoveSet, args=(['four', 'six'], )) |
1126 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1127 |
self.ls.remove('four') |
1128 |
self._waitThreads()
|
1129 |
self.assertEqual(self.done.get_nowait(), ['six']) |
1130 |
self._addThread(target=self._doRemoveSet, args=(['two'])) |
1131 |
self._waitThreads()
|
1132 |
self.assertEqual(self.done.get_nowait(), ['two']) |
1133 |
self.ls.release()
|
1134 |
# reset lockset
|
1135 |
self._setUpLS()
|
1136 |
|
1137 |
@_Repeat
|
1138 |
def testConcurrentSharedSetLock(self): |
1139 |
# share the set-lock...
|
1140 |
self.ls.acquire(None, shared=1) |
1141 |
# ...another thread can share it too
|
1142 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1143 |
self._waitThreads()
|
1144 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1145 |
# ...or just share some elements
|
1146 |
self._addThread(target=self._doLockSet, args=(['one', 'three'], 1)) |
1147 |
self._waitThreads()
|
1148 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1149 |
# ...but not add new ones or remove any
|
1150 |
t = self._addThread(target=self._doAddSet, args=(['nine'])) |
1151 |
self._addThread(target=self._doRemoveSet, args=(['two'], )) |
1152 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1153 |
# this just releases the set-lock
|
1154 |
self.ls.release([])
|
1155 |
t.join(60)
|
1156 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1157 |
# release the lock on the actual elements so remove() can proceed too
|
1158 |
self.ls.release()
|
1159 |
self._waitThreads()
|
1160 |
self.failUnlessEqual(self.done.get_nowait(), ['two']) |
1161 |
# reset lockset
|
1162 |
self._setUpLS()
|
1163 |
|
1164 |
@_Repeat
|
1165 |
def testConcurrentExclusiveSetLock(self): |
1166 |
# acquire the set-lock...
|
1167 |
self.ls.acquire(None, shared=0) |
1168 |
# ...no one can do anything else
|
1169 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1170 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1171 |
self._addThread(target=self._doLockSet, args=(['three'], 0)) |
1172 |
self._addThread(target=self._doLockSet, args=(['two'], 1)) |
1173 |
self._addThread(target=self._doAddSet, args=(['nine'])) |
1174 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1175 |
self.ls.release()
|
1176 |
self._waitThreads()
|
1177 |
for _ in range(5): |
1178 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
1179 |
# cleanup
|
1180 |
self._setUpLS()
|
1181 |
|
1182 |
@_Repeat
|
1183 |
def testConcurrentSetLockAdd(self): |
1184 |
self.ls.acquire('one') |
1185 |
# Another thread wants the whole SetLock
|
1186 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1187 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1188 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1189 |
self.assertRaises(AssertionError, self.ls.add, 'four') |
1190 |
self.ls.release()
|
1191 |
self._waitThreads()
|
1192 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1193 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1194 |
self.ls.acquire(None) |
1195 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1196 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1197 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1198 |
self.ls.add('four') |
1199 |
self.ls.add('five', acquired=1) |
1200 |
self.ls.add('six', acquired=1, shared=1) |
1201 |
self.assertEquals(self.ls._list_owned(), |
1202 |
set(['one', 'two', 'three', 'five', 'six'])) |
1203 |
self.assertEquals(self.ls._is_owned(), True) |
1204 |
self.assertEquals(self.ls._names(), |
1205 |
set(['one', 'two', 'three', 'four', 'five', 'six'])) |
1206 |
self.ls.release()
|
1207 |
self._waitThreads()
|
1208 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1209 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1210 |
self._setUpLS()
|
1211 |
|
1212 |
@_Repeat
|
1213 |
def testEmptyLockSet(self): |
1214 |
# get the set-lock
|
1215 |
self.assertEqual(self.ls.acquire(None), set(['one', 'two', 'three'])) |
1216 |
# now empty it...
|
1217 |
self.ls.remove(['one', 'two', 'three']) |
1218 |
# and adds/locks by another thread still wait
|
1219 |
self._addThread(target=self._doAddSet, args=(['nine'])) |
1220 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1221 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1222 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1223 |
self.ls.release()
|
1224 |
self._waitThreads()
|
1225 |
for _ in range(3): |
1226 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1227 |
# empty it again...
|
1228 |
self.assertEqual(self.ls.remove(['nine']), ['nine']) |
1229 |
# now share it...
|
1230 |
self.assertEqual(self.ls.acquire(None, shared=1), set()) |
1231 |
# other sharers can go, adds still wait
|
1232 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1233 |
self._waitThreads()
|
1234 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1235 |
self._addThread(target=self._doAddSet, args=(['nine'])) |
1236 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1237 |
self.ls.release()
|
1238 |
self._waitThreads()
|
1239 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1240 |
self._setUpLS()
|
1241 |
|
1242 |
|
1243 |
class TestGanetiLockManager(_ThreadedTestCase): |
1244 |
|
1245 |
def setUp(self): |
1246 |
_ThreadedTestCase.setUp(self)
|
1247 |
self.nodes=['n1', 'n2'] |
1248 |
self.instances=['i1', 'i2', 'i3'] |
1249 |
self.GL = locking.GanetiLockManager(nodes=self.nodes, |
1250 |
instances=self.instances)
|
1251 |
|
1252 |
def tearDown(self): |
1253 |
# Don't try this at home...
|
1254 |
locking.GanetiLockManager._instance = None
|
1255 |
|
1256 |
def testLockingConstants(self): |
1257 |
# The locking library internally cheats by assuming its constants have some
|
1258 |
# relationships with each other. Check those hold true.
|
1259 |
# This relationship is also used in the Processor to recursively acquire
|
1260 |
# the right locks. Again, please don't break it.
|
1261 |
for i in range(len(locking.LEVELS)): |
1262 |
self.assertEqual(i, locking.LEVELS[i])
|
1263 |
|
1264 |
def testDoubleGLFails(self): |
1265 |
self.assertRaises(AssertionError, locking.GanetiLockManager) |
1266 |
|
1267 |
def testLockNames(self): |
1268 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1269 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
1270 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
1271 |
set(self.instances)) |
1272 |
|
1273 |
def testInitAndResources(self): |
1274 |
locking.GanetiLockManager._instance = None
|
1275 |
self.GL = locking.GanetiLockManager()
|
1276 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1277 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
1278 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
1279 |
|
1280 |
locking.GanetiLockManager._instance = None
|
1281 |
self.GL = locking.GanetiLockManager(nodes=self.nodes) |
1282 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1283 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
1284 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
1285 |
|
1286 |
locking.GanetiLockManager._instance = None
|
1287 |
self.GL = locking.GanetiLockManager(instances=self.instances) |
1288 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1289 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
1290 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
1291 |
set(self.instances)) |
1292 |
|
1293 |
def testAcquireRelease(self): |
1294 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1295 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_CLUSTER), set(['BGL'])) |
1296 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1']) |
1297 |
self.GL.acquire(locking.LEVEL_NODE, ['n1', 'n2'], shared=1) |
1298 |
self.GL.release(locking.LEVEL_NODE, ['n2']) |
1299 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set(['n1'])) |
1300 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
1301 |
self.GL.release(locking.LEVEL_NODE)
|
1302 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set()) |
1303 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
1304 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1305 |
self.assertRaises(errors.LockError, self.GL.acquire, |
1306 |
locking.LEVEL_INSTANCE, ['i5'])
|
1307 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3'], shared=1) |
1308 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i3'])) |
1309 |
|
1310 |
def testAcquireWholeSets(self): |
1311 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1312 |
self.assertEquals(self.GL.acquire(locking.LEVEL_INSTANCE, None), |
1313 |
set(self.instances)) |
1314 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), |
1315 |
set(self.instances)) |
1316 |
self.assertEquals(self.GL.acquire(locking.LEVEL_NODE, None, shared=1), |
1317 |
set(self.nodes)) |
1318 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), |
1319 |
set(self.nodes)) |
1320 |
self.GL.release(locking.LEVEL_NODE)
|
1321 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1322 |
self.GL.release(locking.LEVEL_CLUSTER)
|
1323 |
|
1324 |
def testAcquireWholeAndPartial(self): |
1325 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1326 |
self.assertEquals(self.GL.acquire(locking.LEVEL_INSTANCE, None), |
1327 |
set(self.instances)) |
1328 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), |
1329 |
set(self.instances)) |
1330 |
self.assertEquals(self.GL.acquire(locking.LEVEL_NODE, ['n2'], shared=1), |
1331 |
set(['n2'])) |
1332 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), |
1333 |
set(['n2'])) |
1334 |
self.GL.release(locking.LEVEL_NODE)
|
1335 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1336 |
self.GL.release(locking.LEVEL_CLUSTER)
|
1337 |
|
1338 |
def testBGLDependency(self): |
1339 |
self.assertRaises(AssertionError, self.GL.acquire, |
1340 |
locking.LEVEL_NODE, ['n1', 'n2']) |
1341 |
self.assertRaises(AssertionError, self.GL.acquire, |
1342 |
locking.LEVEL_INSTANCE, ['i3'])
|
1343 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1344 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
1345 |
self.assertRaises(AssertionError, self.GL.release, |
1346 |
locking.LEVEL_CLUSTER, ['BGL'])
|
1347 |
self.assertRaises(AssertionError, self.GL.release, |
1348 |
locking.LEVEL_CLUSTER) |
1349 |
self.GL.release(locking.LEVEL_NODE)
|
1350 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1', 'i2']) |
1351 |
self.assertRaises(AssertionError, self.GL.release, |
1352 |
locking.LEVEL_CLUSTER, ['BGL'])
|
1353 |
self.assertRaises(AssertionError, self.GL.release, |
1354 |
locking.LEVEL_CLUSTER) |
1355 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1356 |
|
1357 |
def testWrongOrder(self): |
1358 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1359 |
self.GL.acquire(locking.LEVEL_NODE, ['n2']) |
1360 |
self.assertRaises(AssertionError, self.GL.acquire, |
1361 |
locking.LEVEL_NODE, ['n1'])
|
1362 |
self.assertRaises(AssertionError, self.GL.acquire, |
1363 |
locking.LEVEL_INSTANCE, ['i2'])
|
1364 |
|
1365 |
# Helper function to run as a thread that shared the BGL and then acquires
|
1366 |
# some locks at another level.
|
1367 |
def _doLock(self, level, names, shared): |
1368 |
try:
|
1369 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1370 |
self.GL.acquire(level, names, shared=shared)
|
1371 |
self.done.put('DONE') |
1372 |
self.GL.release(level)
|
1373 |
self.GL.release(locking.LEVEL_CLUSTER)
|
1374 |
except errors.LockError:
|
1375 |
self.done.put('ERR') |
1376 |
|
1377 |
@_Repeat
|
1378 |
def testConcurrency(self): |
1379 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1380 |
self._addThread(target=self._doLock, |
1381 |
args=(locking.LEVEL_INSTANCE, 'i1', 1)) |
1382 |
self._waitThreads()
|
1383 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1384 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3']) |
1385 |
self._addThread(target=self._doLock, |
1386 |
args=(locking.LEVEL_INSTANCE, 'i1', 1)) |
1387 |
self._waitThreads()
|
1388 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1389 |
self._addThread(target=self._doLock, |
1390 |
args=(locking.LEVEL_INSTANCE, 'i3', 1)) |
1391 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1392 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1393 |
self._waitThreads()
|
1394 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1395 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i2'], shared=1) |
1396 |
self._addThread(target=self._doLock, |
1397 |
args=(locking.LEVEL_INSTANCE, 'i2', 1)) |
1398 |
self._waitThreads()
|
1399 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1400 |
self._addThread(target=self._doLock, |
1401 |
args=(locking.LEVEL_INSTANCE, 'i2', 0)) |
1402 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1403 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1404 |
self._waitThreads()
|
1405 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
1406 |
self.GL.release(locking.LEVEL_CLUSTER, ['BGL']) |
1407 |
|
1408 |
|
1409 |
if __name__ == '__main__': |
1410 |
testutils.GanetiTestProgram() |