root / test / ganeti.locking_unittest.py @ 63f2e724
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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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# 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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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 TestPipeCondition(_ThreadedTestCase): |
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"""_PipeCondition tests"""
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def setUp(self): |
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_ThreadedTestCase.setUp(self)
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self.lock = threading.Lock()
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self.cond = locking._PipeCondition(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.cond.acquire()
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self.cond.notifyAll()
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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.cond.wait()
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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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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 TestSingleActionPipeCondition(unittest.TestCase): |
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"""_SingleActionPipeCondition tests"""
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def setUp(self): |
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self.cond = locking._SingleActionPipeCondition()
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def testInitialization(self): |
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self.assert_(self.cond._read_fd is not None) |
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self.assert_(self.cond._write_fd is not None) |
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self.assert_(self.cond._poller is not None) |
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self.assertEqual(self.cond._nwaiters, 0) |
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def testUsageCount(self): |
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self.cond.StartWaiting()
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self.assert_(self.cond._read_fd is not None) |
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self.assert_(self.cond._write_fd is not None) |
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self.assert_(self.cond._poller is not None) |
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self.assertEqual(self.cond._nwaiters, 1) |
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# use again
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self.cond.StartWaiting()
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self.assertEqual(self.cond._nwaiters, 2) |
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# there is more than one user
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self.assert_(not self.cond.DoneWaiting()) |
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self.assert_(self.cond._read_fd is not None) |
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self.assert_(self.cond._write_fd is not None) |
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self.assert_(self.cond._poller is not None) |
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self.assertEqual(self.cond._nwaiters, 1) |
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self.assert_(self.cond.DoneWaiting()) |
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self.assertEqual(self.cond._nwaiters, 0) |
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self.assert_(self.cond._read_fd is None) |
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self.assert_(self.cond._write_fd is None) |
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self.assert_(self.cond._poller is None) |
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def testNotify(self): |
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wait1 = self.cond.StartWaiting()
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wait2 = self.cond.StartWaiting()
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self.assert_(self.cond._read_fd is not None) |
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self.assert_(self.cond._write_fd is not None) |
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self.assert_(self.cond._poller is not None) |
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self.cond.notifyAll()
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self.assert_(self.cond._read_fd is not None) |
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self.assert_(self.cond._write_fd is None) |
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self.assert_(self.cond._poller is not None) |
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self.assert_(not self.cond.DoneWaiting()) |
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self.assert_(self.cond._read_fd is not None) |
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self.assert_(self.cond._write_fd is None) |
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self.assert_(self.cond._poller is not None) |
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self.assert_(self.cond.DoneWaiting()) |
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self.assert_(self.cond._read_fd is None) |
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self.assert_(self.cond._write_fd is None) |
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self.assert_(self.cond._poller is None) |
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def testReusage(self): |
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self.cond.StartWaiting()
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self.assert_(self.cond._read_fd is not None) |
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self.assert_(self.cond._write_fd is not None) |
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self.assert_(self.cond._poller is not None) |
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self.assert_(self.cond.DoneWaiting()) |
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self.assertRaises(RuntimeError, self.cond.StartWaiting) |
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self.assert_(self.cond._read_fd is None) |
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self.assert_(self.cond._write_fd is None) |
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self.assert_(self.cond._poller is None) |
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def testNotifyTwice(self): |
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self.cond.notifyAll()
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self.assertRaises(RuntimeError, self.cond.notifyAll) |
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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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def _LockExclusive(wait): |
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self.sl.acquire(shared=0) |
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self.done.put("A: start sleep") |
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time.sleep(wait) |
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self.done.put("A: end sleep") |
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self.sl.release()
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for shared in [0, 1]: |
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# Start thread to hold lock for 20 ms
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self._addThread(target=_LockExclusive, args=(20.0 / 1000.0, )) |
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# Wait for sleep to begin
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self.assertEqual(self.done.get(), "A: start sleep") |
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|
501 |
# Wait up to 100 ms to get lock
|
502 |
self.failUnless(self.sl.acquire(shared=shared, timeout=0.1)) |
503 |
self.done.put("got 2nd") |
504 |
self.sl.release()
|
505 |
|
506 |
self._waitThreads()
|
507 |
|
508 |
self.assertEqual(self.done.get_nowait(), "A: end sleep") |
509 |
self.assertEqual(self.done.get_nowait(), "got 2nd") |
510 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
511 |
|
512 |
@_Repeat
|
513 |
def testAcquireExpiringTimeout(self): |
514 |
def _AcquireWithTimeout(shared, timeout): |
515 |
if not self.sl.acquire(shared=shared, timeout=timeout): |
516 |
self.done.put("timeout") |
517 |
|
518 |
for shared in [0, 1]: |
519 |
# Lock exclusively
|
520 |
self.sl.acquire()
|
521 |
|
522 |
# Start shared acquires with timeout between 0 and 20 ms
|
523 |
for i in xrange(11): |
524 |
self._addThread(target=_AcquireWithTimeout,
|
525 |
args=(shared, i * 2.0 / 1000.0)) |
526 |
|
527 |
# Wait for threads to finish (makes sure the acquire timeout expires
|
528 |
# before releasing the lock)
|
529 |
self._waitThreads()
|
530 |
|
531 |
# Release lock
|
532 |
self.sl.release()
|
533 |
|
534 |
for _ in xrange(11): |
535 |
self.assertEqual(self.done.get_nowait(), "timeout") |
536 |
|
537 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
538 |
|
539 |
@_Repeat
|
540 |
def testSharedSkipExclusiveAcquires(self): |
541 |
# Tests whether shared acquires jump in front of exclusive acquires in the
|
542 |
# queue.
|
543 |
|
544 |
# Get exclusive lock while we fill the queue
|
545 |
self.sl.acquire()
|
546 |
|
547 |
def _Acquire(shared, name): |
548 |
if not self.sl.acquire(shared=shared): |
549 |
return
|
550 |
|
551 |
self.done.put(name)
|
552 |
self.sl.release()
|
553 |
|
554 |
# Start shared acquires
|
555 |
for _ in xrange(5): |
556 |
self._addThread(target=_Acquire, args=(1, "shared A")) |
557 |
|
558 |
# Start exclusive acquires
|
559 |
for _ in xrange(3): |
560 |
self._addThread(target=_Acquire, args=(0, "exclusive B")) |
561 |
|
562 |
# More shared acquires
|
563 |
for _ in xrange(5): |
564 |
self._addThread(target=_Acquire, args=(1, "shared C")) |
565 |
|
566 |
# More exclusive acquires
|
567 |
for _ in xrange(3): |
568 |
self._addThread(target=_Acquire, args=(0, "exclusive D")) |
569 |
|
570 |
# Expect 6 pending exclusive acquires and 1 for all shared acquires
|
571 |
# together. There's no way to wait for SharedLock.acquire to start
|
572 |
# its work. Hence the timeout of 2 seconds.
|
573 |
pending = 0
|
574 |
end_time = time.time() + 2.0
|
575 |
while time.time() < end_time:
|
576 |
pending = self.sl._count_pending()
|
577 |
self.assert_(pending >= 0 and pending <= 7) |
578 |
if pending == 7: |
579 |
break
|
580 |
time.sleep(0.05)
|
581 |
self.assertEqual(pending, 7) |
582 |
|
583 |
# Release exclusive lock and wait
|
584 |
self.sl.release()
|
585 |
|
586 |
self._waitThreads()
|
587 |
|
588 |
# Check sequence
|
589 |
shr_a = 0
|
590 |
shr_c = 0
|
591 |
for _ in xrange(10): |
592 |
# Shared locks aren't guaranteed to be notified in order, but they'll be
|
593 |
# first
|
594 |
tmp = self.done.get_nowait()
|
595 |
if tmp == "shared A": |
596 |
shr_a += 1
|
597 |
elif tmp == "shared C": |
598 |
shr_c += 1
|
599 |
self.assertEqual(shr_a, 5) |
600 |
self.assertEqual(shr_c, 5) |
601 |
|
602 |
for _ in xrange(3): |
603 |
self.assertEqual(self.done.get_nowait(), "exclusive B") |
604 |
|
605 |
for _ in xrange(3): |
606 |
self.assertEqual(self.done.get_nowait(), "exclusive D") |
607 |
|
608 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
609 |
|
610 |
@_Repeat
|
611 |
def testMixedAcquireTimeout(self): |
612 |
sync = threading.Condition() |
613 |
|
614 |
def _AcquireShared(ev): |
615 |
if not self.sl.acquire(shared=1, timeout=None): |
616 |
return
|
617 |
|
618 |
self.done.put("shared") |
619 |
|
620 |
# Notify main thread
|
621 |
ev.set() |
622 |
|
623 |
# Wait for notification
|
624 |
sync.acquire() |
625 |
try:
|
626 |
sync.wait() |
627 |
finally:
|
628 |
sync.release() |
629 |
|
630 |
# Release lock
|
631 |
self.sl.release()
|
632 |
|
633 |
acquires = [] |
634 |
for _ in xrange(3): |
635 |
ev = threading.Event() |
636 |
self._addThread(target=_AcquireShared, args=(ev, ))
|
637 |
acquires.append(ev) |
638 |
|
639 |
# Wait for all acquires to finish
|
640 |
for i in acquires: |
641 |
i.wait() |
642 |
|
643 |
self.assertEqual(self.sl._count_pending(), 0) |
644 |
|
645 |
# Try to get exclusive lock
|
646 |
self.failIf(self.sl.acquire(shared=0, timeout=0.02)) |
647 |
|
648 |
# Acquire exclusive without timeout
|
649 |
exclsync = threading.Condition() |
650 |
exclev = threading.Event() |
651 |
|
652 |
def _AcquireExclusive(): |
653 |
if not self.sl.acquire(shared=0): |
654 |
return
|
655 |
|
656 |
self.done.put("exclusive") |
657 |
|
658 |
# Notify main thread
|
659 |
exclev.set() |
660 |
|
661 |
exclsync.acquire() |
662 |
try:
|
663 |
exclsync.wait() |
664 |
finally:
|
665 |
exclsync.release() |
666 |
|
667 |
self.sl.release()
|
668 |
|
669 |
self._addThread(target=_AcquireExclusive)
|
670 |
|
671 |
# Try to get exclusive lock
|
672 |
self.failIf(self.sl.acquire(shared=0, timeout=0.02)) |
673 |
|
674 |
# Make all shared holders release their locks
|
675 |
sync.acquire() |
676 |
try:
|
677 |
sync.notifyAll() |
678 |
finally:
|
679 |
sync.release() |
680 |
|
681 |
# Wait for exclusive acquire to succeed
|
682 |
exclev.wait() |
683 |
|
684 |
self.assertEqual(self.sl._count_pending(), 0) |
685 |
|
686 |
# Try to get exclusive lock
|
687 |
self.failIf(self.sl.acquire(shared=0, timeout=0.02)) |
688 |
|
689 |
def _AcquireSharedSimple(): |
690 |
if self.sl.acquire(shared=1, timeout=None): |
691 |
self.done.put("shared2") |
692 |
self.sl.release()
|
693 |
|
694 |
for _ in xrange(10): |
695 |
self._addThread(target=_AcquireSharedSimple)
|
696 |
|
697 |
# Tell exclusive lock to release
|
698 |
exclsync.acquire() |
699 |
try:
|
700 |
exclsync.notifyAll() |
701 |
finally:
|
702 |
exclsync.release() |
703 |
|
704 |
# Wait for everything to finish
|
705 |
self._waitThreads()
|
706 |
|
707 |
self.assertEqual(self.sl._count_pending(), 0) |
708 |
|
709 |
# Check sequence
|
710 |
for _ in xrange(3): |
711 |
self.assertEqual(self.done.get_nowait(), "shared") |
712 |
|
713 |
self.assertEqual(self.done.get_nowait(), "exclusive") |
714 |
|
715 |
for _ in xrange(10): |
716 |
self.assertEqual(self.done.get_nowait(), "shared2") |
717 |
|
718 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
719 |
|
720 |
|
721 |
class TestSSynchronizedDecorator(_ThreadedTestCase): |
722 |
"""Shared Lock Synchronized decorator test"""
|
723 |
|
724 |
def setUp(self): |
725 |
_ThreadedTestCase.setUp(self)
|
726 |
|
727 |
@locking.ssynchronized(_decoratorlock)
|
728 |
def _doItExclusive(self): |
729 |
self.assert_(_decoratorlock._is_owned())
|
730 |
self.done.put('EXC') |
731 |
|
732 |
@locking.ssynchronized(_decoratorlock, shared=1) |
733 |
def _doItSharer(self): |
734 |
self.assert_(_decoratorlock._is_owned(shared=1)) |
735 |
self.done.put('SHR') |
736 |
|
737 |
def testDecoratedFunctions(self): |
738 |
self._doItExclusive()
|
739 |
self.assert_(not _decoratorlock._is_owned()) |
740 |
self._doItSharer()
|
741 |
self.assert_(not _decoratorlock._is_owned()) |
742 |
|
743 |
def testSharersCanCoexist(self): |
744 |
_decoratorlock.acquire(shared=1)
|
745 |
threading.Thread(target=self._doItSharer).start()
|
746 |
self.assert_(self.done.get(True, 1)) |
747 |
_decoratorlock.release() |
748 |
|
749 |
@_Repeat
|
750 |
def testExclusiveBlocksExclusive(self): |
751 |
_decoratorlock.acquire() |
752 |
self._addThread(target=self._doItExclusive) |
753 |
# give it a bit of time to check that it's not actually doing anything
|
754 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
755 |
_decoratorlock.release() |
756 |
self._waitThreads()
|
757 |
self.failUnlessEqual(self.done.get_nowait(), 'EXC') |
758 |
|
759 |
@_Repeat
|
760 |
def testExclusiveBlocksSharer(self): |
761 |
_decoratorlock.acquire() |
762 |
self._addThread(target=self._doItSharer) |
763 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
764 |
_decoratorlock.release() |
765 |
self._waitThreads()
|
766 |
self.failUnlessEqual(self.done.get_nowait(), 'SHR') |
767 |
|
768 |
@_Repeat
|
769 |
def testSharerBlocksExclusive(self): |
770 |
_decoratorlock.acquire(shared=1)
|
771 |
self._addThread(target=self._doItExclusive) |
772 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
773 |
_decoratorlock.release() |
774 |
self._waitThreads()
|
775 |
self.failUnlessEqual(self.done.get_nowait(), 'EXC') |
776 |
|
777 |
|
778 |
class TestLockSet(_ThreadedTestCase): |
779 |
"""LockSet tests"""
|
780 |
|
781 |
def setUp(self): |
782 |
_ThreadedTestCase.setUp(self)
|
783 |
self._setUpLS()
|
784 |
|
785 |
def _setUpLS(self): |
786 |
"""Helper to (re)initialize the lock set"""
|
787 |
self.resources = ['one', 'two', 'three'] |
788 |
self.ls = locking.LockSet(members=self.resources) |
789 |
|
790 |
def testResources(self): |
791 |
self.assertEquals(self.ls._names(), set(self.resources)) |
792 |
newls = locking.LockSet() |
793 |
self.assertEquals(newls._names(), set()) |
794 |
|
795 |
def testAcquireRelease(self): |
796 |
self.assert_(self.ls.acquire('one')) |
797 |
self.assertEquals(self.ls._list_owned(), set(['one'])) |
798 |
self.ls.release()
|
799 |
self.assertEquals(self.ls._list_owned(), set()) |
800 |
self.assertEquals(self.ls.acquire(['one']), set(['one'])) |
801 |
self.assertEquals(self.ls._list_owned(), set(['one'])) |
802 |
self.ls.release()
|
803 |
self.assertEquals(self.ls._list_owned(), set()) |
804 |
self.ls.acquire(['one', 'two', 'three']) |
805 |
self.assertEquals(self.ls._list_owned(), set(['one', 'two', 'three'])) |
806 |
self.ls.release('one') |
807 |
self.assertEquals(self.ls._list_owned(), set(['two', 'three'])) |
808 |
self.ls.release(['three']) |
809 |
self.assertEquals(self.ls._list_owned(), set(['two'])) |
810 |
self.ls.release()
|
811 |
self.assertEquals(self.ls._list_owned(), set()) |
812 |
self.assertEquals(self.ls.acquire(['one', 'three']), set(['one', 'three'])) |
813 |
self.assertEquals(self.ls._list_owned(), set(['one', 'three'])) |
814 |
self.ls.release()
|
815 |
self.assertEquals(self.ls._list_owned(), set()) |
816 |
|
817 |
def testNoDoubleAcquire(self): |
818 |
self.ls.acquire('one') |
819 |
self.assertRaises(AssertionError, self.ls.acquire, 'one') |
820 |
self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
821 |
self.assertRaises(AssertionError, self.ls.acquire, ['two', 'three']) |
822 |
self.ls.release()
|
823 |
self.ls.acquire(['one', 'three']) |
824 |
self.ls.release('one') |
825 |
self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
826 |
self.ls.release('three') |
827 |
|
828 |
def testNoWrongRelease(self): |
829 |
self.assertRaises(AssertionError, self.ls.release) |
830 |
self.ls.acquire('one') |
831 |
self.assertRaises(AssertionError, self.ls.release, 'two') |
832 |
|
833 |
def testAddRemove(self): |
834 |
self.ls.add('four') |
835 |
self.assertEquals(self.ls._list_owned(), set()) |
836 |
self.assert_('four' in self.ls._names()) |
837 |
self.ls.add(['five', 'six', 'seven'], acquired=1) |
838 |
self.assert_('five' in self.ls._names()) |
839 |
self.assert_('six' in self.ls._names()) |
840 |
self.assert_('seven' in self.ls._names()) |
841 |
self.assertEquals(self.ls._list_owned(), set(['five', 'six', 'seven'])) |
842 |
self.assertEquals(self.ls.remove(['five', 'six']), ['five', 'six']) |
843 |
self.assert_('five' not in self.ls._names()) |
844 |
self.assert_('six' not in self.ls._names()) |
845 |
self.assertEquals(self.ls._list_owned(), set(['seven'])) |
846 |
self.assertRaises(AssertionError, self.ls.add, 'eight', acquired=1) |
847 |
self.ls.remove('seven') |
848 |
self.assert_('seven' not in self.ls._names()) |
849 |
self.assertEquals(self.ls._list_owned(), set([])) |
850 |
self.ls.acquire(None, shared=1) |
851 |
self.assertRaises(AssertionError, self.ls.add, 'eight') |
852 |
self.ls.release()
|
853 |
self.ls.acquire(None) |
854 |
self.ls.add('eight', acquired=1) |
855 |
self.assert_('eight' in self.ls._names()) |
856 |
self.assert_('eight' in self.ls._list_owned()) |
857 |
self.ls.add('nine') |
858 |
self.assert_('nine' in self.ls._names()) |
859 |
self.assert_('nine' not in self.ls._list_owned()) |
860 |
self.ls.release()
|
861 |
self.ls.remove(['two']) |
862 |
self.assert_('two' not in self.ls._names()) |
863 |
self.ls.acquire('three') |
864 |
self.assertEquals(self.ls.remove(['three']), ['three']) |
865 |
self.assert_('three' not in self.ls._names()) |
866 |
self.assertEquals(self.ls.remove('three'), []) |
867 |
self.assertEquals(self.ls.remove(['one', 'three', 'six']), ['one']) |
868 |
self.assert_('one' not in self.ls._names()) |
869 |
|
870 |
def testRemoveNonBlocking(self): |
871 |
self.ls.acquire('one') |
872 |
self.assertEquals(self.ls.remove('one'), ['one']) |
873 |
self.ls.acquire(['two', 'three']) |
874 |
self.assertEquals(self.ls.remove(['two', 'three']), |
875 |
['two', 'three']) |
876 |
|
877 |
def testNoDoubleAdd(self): |
878 |
self.assertRaises(errors.LockError, self.ls.add, 'two') |
879 |
self.ls.add('four') |
880 |
self.assertRaises(errors.LockError, self.ls.add, 'four') |
881 |
|
882 |
def testNoWrongRemoves(self): |
883 |
self.ls.acquire(['one', 'three'], shared=1) |
884 |
# Cannot remove 'two' while holding something which is not a superset
|
885 |
self.assertRaises(AssertionError, self.ls.remove, 'two') |
886 |
# Cannot remove 'three' as we are sharing it
|
887 |
self.assertRaises(AssertionError, self.ls.remove, 'three') |
888 |
|
889 |
def testAcquireSetLock(self): |
890 |
# acquire the set-lock exclusively
|
891 |
self.assertEquals(self.ls.acquire(None), set(['one', 'two', 'three'])) |
892 |
self.assertEquals(self.ls._list_owned(), set(['one', 'two', 'three'])) |
893 |
self.assertEquals(self.ls._is_owned(), True) |
894 |
self.assertEquals(self.ls._names(), set(['one', 'two', 'three'])) |
895 |
# I can still add/remove elements...
|
896 |
self.assertEquals(self.ls.remove(['two', 'three']), ['two', 'three']) |
897 |
self.assert_(self.ls.add('six')) |
898 |
self.ls.release()
|
899 |
# share the set-lock
|
900 |
self.assertEquals(self.ls.acquire(None, shared=1), set(['one', 'six'])) |
901 |
# adding new elements is not possible
|
902 |
self.assertRaises(AssertionError, self.ls.add, 'five') |
903 |
self.ls.release()
|
904 |
|
905 |
def testAcquireWithRepetitions(self): |
906 |
self.assertEquals(self.ls.acquire(['two', 'two', 'three'], shared=1), |
907 |
set(['two', 'two', 'three'])) |
908 |
self.ls.release(['two', 'two']) |
909 |
self.assertEquals(self.ls._list_owned(), set(['three'])) |
910 |
|
911 |
def testEmptyAcquire(self): |
912 |
# Acquire an empty list of locks...
|
913 |
self.assertEquals(self.ls.acquire([]), set()) |
914 |
self.assertEquals(self.ls._list_owned(), set()) |
915 |
# New locks can still be addded
|
916 |
self.assert_(self.ls.add('six')) |
917 |
# "re-acquiring" is not an issue, since we had really acquired nothing
|
918 |
self.assertEquals(self.ls.acquire([], shared=1), set()) |
919 |
self.assertEquals(self.ls._list_owned(), set()) |
920 |
# We haven't really acquired anything, so we cannot release
|
921 |
self.assertRaises(AssertionError, self.ls.release) |
922 |
|
923 |
def _doLockSet(self, names, shared): |
924 |
try:
|
925 |
self.ls.acquire(names, shared=shared)
|
926 |
self.done.put('DONE') |
927 |
self.ls.release()
|
928 |
except errors.LockError:
|
929 |
self.done.put('ERR') |
930 |
|
931 |
def _doAddSet(self, names): |
932 |
try:
|
933 |
self.ls.add(names, acquired=1) |
934 |
self.done.put('DONE') |
935 |
self.ls.release()
|
936 |
except errors.LockError:
|
937 |
self.done.put('ERR') |
938 |
|
939 |
def _doRemoveSet(self, names): |
940 |
self.done.put(self.ls.remove(names)) |
941 |
|
942 |
@_Repeat
|
943 |
def testConcurrentSharedAcquire(self): |
944 |
self.ls.acquire(['one', 'two'], shared=1) |
945 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 1)) |
946 |
self._waitThreads()
|
947 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
948 |
self._addThread(target=self._doLockSet, args=(['one', 'two', 'three'], 1)) |
949 |
self._waitThreads()
|
950 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
951 |
self._addThread(target=self._doLockSet, args=('three', 1)) |
952 |
self._waitThreads()
|
953 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
954 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 0)) |
955 |
self._addThread(target=self._doLockSet, args=(['two', 'three'], 0)) |
956 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
957 |
self.ls.release()
|
958 |
self._waitThreads()
|
959 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
960 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
961 |
|
962 |
@_Repeat
|
963 |
def testConcurrentExclusiveAcquire(self): |
964 |
self.ls.acquire(['one', 'two']) |
965 |
self._addThread(target=self._doLockSet, args=('three', 1)) |
966 |
self._waitThreads()
|
967 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
968 |
self._addThread(target=self._doLockSet, args=('three', 0)) |
969 |
self._waitThreads()
|
970 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
971 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
972 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 0)) |
973 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 1)) |
974 |
self._addThread(target=self._doLockSet, args=('one', 0)) |
975 |
self._addThread(target=self._doLockSet, args=('one', 1)) |
976 |
self._addThread(target=self._doLockSet, args=(['two', 'three'], 0)) |
977 |
self._addThread(target=self._doLockSet, args=(['two', 'three'], 1)) |
978 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
979 |
self.ls.release()
|
980 |
self._waitThreads()
|
981 |
for _ in range(6): |
982 |
self.failUnlessEqual(self.done.get_nowait(), 'DONE') |
983 |
|
984 |
@_Repeat
|
985 |
def testConcurrentRemove(self): |
986 |
self.ls.add('four') |
987 |
self.ls.acquire(['one', 'two', 'four']) |
988 |
self._addThread(target=self._doLockSet, args=(['one', 'four'], 0)) |
989 |
self._addThread(target=self._doLockSet, args=(['one', 'four'], 1)) |
990 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 0)) |
991 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 1)) |
992 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
993 |
self.ls.remove('one') |
994 |
self.ls.release()
|
995 |
self._waitThreads()
|
996 |
for i in range(4): |
997 |
self.failUnlessEqual(self.done.get_nowait(), 'ERR') |
998 |
self.ls.add(['five', 'six'], acquired=1) |
999 |
self._addThread(target=self._doLockSet, args=(['three', 'six'], 1)) |
1000 |
self._addThread(target=self._doLockSet, args=(['three', 'six'], 0)) |
1001 |
self._addThread(target=self._doLockSet, args=(['four', 'six'], 1)) |
1002 |
self._addThread(target=self._doLockSet, args=(['four', 'six'], 0)) |
1003 |
self.ls.remove('five') |
1004 |
self.ls.release()
|
1005 |
self._waitThreads()
|
1006 |
for i in range(4): |
1007 |
self.failUnlessEqual(self.done.get_nowait(), 'DONE') |
1008 |
self.ls.acquire(['three', 'four']) |
1009 |
self._addThread(target=self._doRemoveSet, args=(['four', 'six'], )) |
1010 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1011 |
self.ls.remove('four') |
1012 |
self._waitThreads()
|
1013 |
self.assertEqual(self.done.get_nowait(), ['six']) |
1014 |
self._addThread(target=self._doRemoveSet, args=(['two'])) |
1015 |
self._waitThreads()
|
1016 |
self.assertEqual(self.done.get_nowait(), ['two']) |
1017 |
self.ls.release()
|
1018 |
# reset lockset
|
1019 |
self._setUpLS()
|
1020 |
|
1021 |
@_Repeat
|
1022 |
def testConcurrentSharedSetLock(self): |
1023 |
# share the set-lock...
|
1024 |
self.ls.acquire(None, shared=1) |
1025 |
# ...another thread can share it too
|
1026 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1027 |
self._waitThreads()
|
1028 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1029 |
# ...or just share some elements
|
1030 |
self._addThread(target=self._doLockSet, args=(['one', 'three'], 1)) |
1031 |
self._waitThreads()
|
1032 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1033 |
# ...but not add new ones or remove any
|
1034 |
t = self._addThread(target=self._doAddSet, args=(['nine'])) |
1035 |
self._addThread(target=self._doRemoveSet, args=(['two'], )) |
1036 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1037 |
# this just releases the set-lock
|
1038 |
self.ls.release([])
|
1039 |
t.join(60)
|
1040 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1041 |
# release the lock on the actual elements so remove() can proceed too
|
1042 |
self.ls.release()
|
1043 |
self._waitThreads()
|
1044 |
self.failUnlessEqual(self.done.get_nowait(), ['two']) |
1045 |
# reset lockset
|
1046 |
self._setUpLS()
|
1047 |
|
1048 |
@_Repeat
|
1049 |
def testConcurrentExclusiveSetLock(self): |
1050 |
# acquire the set-lock...
|
1051 |
self.ls.acquire(None, shared=0) |
1052 |
# ...no one can do anything else
|
1053 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1054 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1055 |
self._addThread(target=self._doLockSet, args=(['three'], 0)) |
1056 |
self._addThread(target=self._doLockSet, args=(['two'], 1)) |
1057 |
self._addThread(target=self._doAddSet, args=(['nine'])) |
1058 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1059 |
self.ls.release()
|
1060 |
self._waitThreads()
|
1061 |
for _ in range(5): |
1062 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
1063 |
# cleanup
|
1064 |
self._setUpLS()
|
1065 |
|
1066 |
@_Repeat
|
1067 |
def testConcurrentSetLockAdd(self): |
1068 |
self.ls.acquire('one') |
1069 |
# Another thread wants the whole SetLock
|
1070 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1071 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1072 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1073 |
self.assertRaises(AssertionError, self.ls.add, 'four') |
1074 |
self.ls.release()
|
1075 |
self._waitThreads()
|
1076 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1077 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1078 |
self.ls.acquire(None) |
1079 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1080 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1081 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1082 |
self.ls.add('four') |
1083 |
self.ls.add('five', acquired=1) |
1084 |
self.ls.add('six', acquired=1, shared=1) |
1085 |
self.assertEquals(self.ls._list_owned(), |
1086 |
set(['one', 'two', 'three', 'five', 'six'])) |
1087 |
self.assertEquals(self.ls._is_owned(), True) |
1088 |
self.assertEquals(self.ls._names(), |
1089 |
set(['one', 'two', 'three', 'four', 'five', 'six'])) |
1090 |
self.ls.release()
|
1091 |
self._waitThreads()
|
1092 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1093 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1094 |
self._setUpLS()
|
1095 |
|
1096 |
@_Repeat
|
1097 |
def testEmptyLockSet(self): |
1098 |
# get the set-lock
|
1099 |
self.assertEqual(self.ls.acquire(None), set(['one', 'two', 'three'])) |
1100 |
# now empty it...
|
1101 |
self.ls.remove(['one', 'two', 'three']) |
1102 |
# and adds/locks by another thread still wait
|
1103 |
self._addThread(target=self._doAddSet, args=(['nine'])) |
1104 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1105 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1106 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1107 |
self.ls.release()
|
1108 |
self._waitThreads()
|
1109 |
for _ in range(3): |
1110 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1111 |
# empty it again...
|
1112 |
self.assertEqual(self.ls.remove(['nine']), ['nine']) |
1113 |
# now share it...
|
1114 |
self.assertEqual(self.ls.acquire(None, shared=1), set()) |
1115 |
# other sharers can go, adds still wait
|
1116 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1117 |
self._waitThreads()
|
1118 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1119 |
self._addThread(target=self._doAddSet, args=(['nine'])) |
1120 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1121 |
self.ls.release()
|
1122 |
self._waitThreads()
|
1123 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1124 |
self._setUpLS()
|
1125 |
|
1126 |
|
1127 |
class TestGanetiLockManager(_ThreadedTestCase): |
1128 |
|
1129 |
def setUp(self): |
1130 |
_ThreadedTestCase.setUp(self)
|
1131 |
self.nodes=['n1', 'n2'] |
1132 |
self.instances=['i1', 'i2', 'i3'] |
1133 |
self.GL = locking.GanetiLockManager(nodes=self.nodes, |
1134 |
instances=self.instances)
|
1135 |
|
1136 |
def tearDown(self): |
1137 |
# Don't try this at home...
|
1138 |
locking.GanetiLockManager._instance = None
|
1139 |
|
1140 |
def testLockingConstants(self): |
1141 |
# The locking library internally cheats by assuming its constants have some
|
1142 |
# relationships with each other. Check those hold true.
|
1143 |
# This relationship is also used in the Processor to recursively acquire
|
1144 |
# the right locks. Again, please don't break it.
|
1145 |
for i in range(len(locking.LEVELS)): |
1146 |
self.assertEqual(i, locking.LEVELS[i])
|
1147 |
|
1148 |
def testDoubleGLFails(self): |
1149 |
self.assertRaises(AssertionError, locking.GanetiLockManager) |
1150 |
|
1151 |
def testLockNames(self): |
1152 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1153 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
1154 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
1155 |
set(self.instances)) |
1156 |
|
1157 |
def testInitAndResources(self): |
1158 |
locking.GanetiLockManager._instance = None
|
1159 |
self.GL = locking.GanetiLockManager()
|
1160 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1161 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
1162 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
1163 |
|
1164 |
locking.GanetiLockManager._instance = None
|
1165 |
self.GL = locking.GanetiLockManager(nodes=self.nodes) |
1166 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1167 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
1168 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
1169 |
|
1170 |
locking.GanetiLockManager._instance = None
|
1171 |
self.GL = locking.GanetiLockManager(instances=self.instances) |
1172 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1173 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
1174 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
1175 |
set(self.instances)) |
1176 |
|
1177 |
def testAcquireRelease(self): |
1178 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1179 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_CLUSTER), set(['BGL'])) |
1180 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1']) |
1181 |
self.GL.acquire(locking.LEVEL_NODE, ['n1', 'n2'], shared=1) |
1182 |
self.GL.release(locking.LEVEL_NODE, ['n2']) |
1183 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set(['n1'])) |
1184 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
1185 |
self.GL.release(locking.LEVEL_NODE)
|
1186 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set()) |
1187 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
1188 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1189 |
self.assertRaises(errors.LockError, self.GL.acquire, |
1190 |
locking.LEVEL_INSTANCE, ['i5'])
|
1191 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3'], shared=1) |
1192 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i3'])) |
1193 |
|
1194 |
def testAcquireWholeSets(self): |
1195 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1196 |
self.assertEquals(self.GL.acquire(locking.LEVEL_INSTANCE, None), |
1197 |
set(self.instances)) |
1198 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), |
1199 |
set(self.instances)) |
1200 |
self.assertEquals(self.GL.acquire(locking.LEVEL_NODE, None, shared=1), |
1201 |
set(self.nodes)) |
1202 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), |
1203 |
set(self.nodes)) |
1204 |
self.GL.release(locking.LEVEL_NODE)
|
1205 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1206 |
self.GL.release(locking.LEVEL_CLUSTER)
|
1207 |
|
1208 |
def testAcquireWholeAndPartial(self): |
1209 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1210 |
self.assertEquals(self.GL.acquire(locking.LEVEL_INSTANCE, None), |
1211 |
set(self.instances)) |
1212 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), |
1213 |
set(self.instances)) |
1214 |
self.assertEquals(self.GL.acquire(locking.LEVEL_NODE, ['n2'], shared=1), |
1215 |
set(['n2'])) |
1216 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), |
1217 |
set(['n2'])) |
1218 |
self.GL.release(locking.LEVEL_NODE)
|
1219 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1220 |
self.GL.release(locking.LEVEL_CLUSTER)
|
1221 |
|
1222 |
def testBGLDependency(self): |
1223 |
self.assertRaises(AssertionError, self.GL.acquire, |
1224 |
locking.LEVEL_NODE, ['n1', 'n2']) |
1225 |
self.assertRaises(AssertionError, self.GL.acquire, |
1226 |
locking.LEVEL_INSTANCE, ['i3'])
|
1227 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1228 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
1229 |
self.assertRaises(AssertionError, self.GL.release, |
1230 |
locking.LEVEL_CLUSTER, ['BGL'])
|
1231 |
self.assertRaises(AssertionError, self.GL.release, |
1232 |
locking.LEVEL_CLUSTER) |
1233 |
self.GL.release(locking.LEVEL_NODE)
|
1234 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1', 'i2']) |
1235 |
self.assertRaises(AssertionError, self.GL.release, |
1236 |
locking.LEVEL_CLUSTER, ['BGL'])
|
1237 |
self.assertRaises(AssertionError, self.GL.release, |
1238 |
locking.LEVEL_CLUSTER) |
1239 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1240 |
|
1241 |
def testWrongOrder(self): |
1242 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1243 |
self.GL.acquire(locking.LEVEL_NODE, ['n2']) |
1244 |
self.assertRaises(AssertionError, self.GL.acquire, |
1245 |
locking.LEVEL_NODE, ['n1'])
|
1246 |
self.assertRaises(AssertionError, self.GL.acquire, |
1247 |
locking.LEVEL_INSTANCE, ['i2'])
|
1248 |
|
1249 |
# Helper function to run as a thread that shared the BGL and then acquires
|
1250 |
# some locks at another level.
|
1251 |
def _doLock(self, level, names, shared): |
1252 |
try:
|
1253 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1254 |
self.GL.acquire(level, names, shared=shared)
|
1255 |
self.done.put('DONE') |
1256 |
self.GL.release(level)
|
1257 |
self.GL.release(locking.LEVEL_CLUSTER)
|
1258 |
except errors.LockError:
|
1259 |
self.done.put('ERR') |
1260 |
|
1261 |
@_Repeat
|
1262 |
def testConcurrency(self): |
1263 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1264 |
self._addThread(target=self._doLock, |
1265 |
args=(locking.LEVEL_INSTANCE, 'i1', 1)) |
1266 |
self._waitThreads()
|
1267 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1268 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3']) |
1269 |
self._addThread(target=self._doLock, |
1270 |
args=(locking.LEVEL_INSTANCE, 'i1', 1)) |
1271 |
self._waitThreads()
|
1272 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1273 |
self._addThread(target=self._doLock, |
1274 |
args=(locking.LEVEL_INSTANCE, 'i3', 1)) |
1275 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1276 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1277 |
self._waitThreads()
|
1278 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1279 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i2'], shared=1) |
1280 |
self._addThread(target=self._doLock, |
1281 |
args=(locking.LEVEL_INSTANCE, 'i2', 1)) |
1282 |
self._waitThreads()
|
1283 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1284 |
self._addThread(target=self._doLock, |
1285 |
args=(locking.LEVEL_INSTANCE, 'i2', 0)) |
1286 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1287 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1288 |
self._waitThreads()
|
1289 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
1290 |
self.GL.release(locking.LEVEL_CLUSTER, ['BGL']) |
1291 |
|
1292 |
|
1293 |
if __name__ == '__main__': |
1294 |
unittest.main() |
1295 |
#suite = unittest.TestLoader().loadTestsFromTestCase(TestSharedLock)
|
1296 |
#unittest.TextTestRunner(verbosity=2).run(suite)
|