root / test / ganeti.locking_unittest.py @ 5e0a6daf
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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.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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self.done = Queue.Queue(0) |
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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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# helper threads use the 'done' queue to tell the master they finished.
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self.done = Queue.Queue(0) |
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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 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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|
500 |
# Wait up to 100 ms to get lock
|
501 |
self.failUnless(self.sl.acquire(shared=shared, timeout=0.1)) |
502 |
self.done.put("got 2nd") |
503 |
self.sl.release()
|
504 |
|
505 |
self._waitThreads()
|
506 |
|
507 |
self.assertEqual(self.done.get_nowait(), "A: end sleep") |
508 |
self.assertEqual(self.done.get_nowait(), "got 2nd") |
509 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
510 |
|
511 |
@_Repeat
|
512 |
def testAcquireExpiringTimeout(self): |
513 |
def _AcquireWithTimeout(shared, timeout): |
514 |
if not self.sl.acquire(shared=shared, timeout=timeout): |
515 |
self.done.put("timeout") |
516 |
|
517 |
for shared in [0, 1]: |
518 |
# Lock exclusively
|
519 |
self.sl.acquire()
|
520 |
|
521 |
# Start shared acquires with timeout between 0 and 20 ms
|
522 |
for i in xrange(11): |
523 |
self._addThread(target=_AcquireWithTimeout,
|
524 |
args=(shared, i * 2.0 / 1000.0)) |
525 |
|
526 |
# Wait for threads to finish (makes sure the acquire timeout expires
|
527 |
# before releasing the lock)
|
528 |
self._waitThreads()
|
529 |
|
530 |
# Release lock
|
531 |
self.sl.release()
|
532 |
|
533 |
for _ in xrange(11): |
534 |
self.assertEqual(self.done.get_nowait(), "timeout") |
535 |
|
536 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
537 |
|
538 |
@_Repeat
|
539 |
def testSharedSkipExclusiveAcquires(self): |
540 |
# Tests whether shared acquires jump in front of exclusive acquires in the
|
541 |
# queue.
|
542 |
|
543 |
# Get exclusive lock while we fill the queue
|
544 |
self.sl.acquire()
|
545 |
|
546 |
def _Acquire(shared, name): |
547 |
if not self.sl.acquire(shared=shared): |
548 |
return
|
549 |
|
550 |
self.done.put(name)
|
551 |
self.sl.release()
|
552 |
|
553 |
# Start shared acquires
|
554 |
for _ in xrange(5): |
555 |
self._addThread(target=_Acquire, args=(1, "shared A")) |
556 |
|
557 |
# Start exclusive acquires
|
558 |
for _ in xrange(3): |
559 |
self._addThread(target=_Acquire, args=(0, "exclusive B")) |
560 |
|
561 |
# More shared acquires
|
562 |
for _ in xrange(5): |
563 |
self._addThread(target=_Acquire, args=(1, "shared C")) |
564 |
|
565 |
# More exclusive acquires
|
566 |
for _ in xrange(3): |
567 |
self._addThread(target=_Acquire, args=(0, "exclusive D")) |
568 |
|
569 |
# Expect 6 pending exclusive acquires and 1 for all shared acquires
|
570 |
# together. There's no way to wait for SharedLock.acquire to start
|
571 |
# its work. Hence the timeout of 2 seconds.
|
572 |
pending = 0
|
573 |
end_time = time.time() + 2.0
|
574 |
while time.time() < end_time:
|
575 |
pending = self.sl._count_pending()
|
576 |
self.assert_(pending >= 0 and pending <= 7) |
577 |
if pending == 7: |
578 |
break
|
579 |
time.sleep(0.05)
|
580 |
self.assertEqual(pending, 7) |
581 |
|
582 |
# Release exclusive lock and wait
|
583 |
self.sl.release()
|
584 |
|
585 |
self._waitThreads()
|
586 |
|
587 |
# Check sequence
|
588 |
shr_a = 0
|
589 |
shr_c = 0
|
590 |
for _ in xrange(10): |
591 |
# Shared locks aren't guaranteed to be notified in order, but they'll be
|
592 |
# first
|
593 |
tmp = self.done.get_nowait()
|
594 |
if tmp == "shared A": |
595 |
shr_a += 1
|
596 |
elif tmp == "shared C": |
597 |
shr_c += 1
|
598 |
self.assertEqual(shr_a, 5) |
599 |
self.assertEqual(shr_c, 5) |
600 |
|
601 |
for _ in xrange(3): |
602 |
self.assertEqual(self.done.get_nowait(), "exclusive B") |
603 |
|
604 |
for _ in xrange(3): |
605 |
self.assertEqual(self.done.get_nowait(), "exclusive D") |
606 |
|
607 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
608 |
|
609 |
@_Repeat
|
610 |
def testMixedAcquireTimeout(self): |
611 |
sync = threading.Condition() |
612 |
|
613 |
def _AcquireShared(ev): |
614 |
if not self.sl.acquire(shared=1, timeout=None): |
615 |
return
|
616 |
|
617 |
self.done.put("shared") |
618 |
|
619 |
# Notify main thread
|
620 |
ev.set() |
621 |
|
622 |
# Wait for notification
|
623 |
sync.acquire() |
624 |
try:
|
625 |
sync.wait() |
626 |
finally:
|
627 |
sync.release() |
628 |
|
629 |
# Release lock
|
630 |
self.sl.release()
|
631 |
|
632 |
acquires = [] |
633 |
for _ in xrange(3): |
634 |
ev = threading.Event() |
635 |
self._addThread(target=_AcquireShared, args=(ev, ))
|
636 |
acquires.append(ev) |
637 |
|
638 |
# Wait for all acquires to finish
|
639 |
for i in acquires: |
640 |
i.wait() |
641 |
|
642 |
self.assertEqual(self.sl._count_pending(), 0) |
643 |
|
644 |
# Try to get exclusive lock
|
645 |
self.failIf(self.sl.acquire(shared=0, timeout=0.02)) |
646 |
|
647 |
# Acquire exclusive without timeout
|
648 |
exclsync = threading.Condition() |
649 |
exclev = threading.Event() |
650 |
|
651 |
def _AcquireExclusive(): |
652 |
if not self.sl.acquire(shared=0): |
653 |
return
|
654 |
|
655 |
self.done.put("exclusive") |
656 |
|
657 |
# Notify main thread
|
658 |
exclev.set() |
659 |
|
660 |
exclsync.acquire() |
661 |
try:
|
662 |
exclsync.wait() |
663 |
finally:
|
664 |
exclsync.release() |
665 |
|
666 |
self.sl.release()
|
667 |
|
668 |
self._addThread(target=_AcquireExclusive)
|
669 |
|
670 |
# Try to get exclusive lock
|
671 |
self.failIf(self.sl.acquire(shared=0, timeout=0.02)) |
672 |
|
673 |
# Make all shared holders release their locks
|
674 |
sync.acquire() |
675 |
try:
|
676 |
sync.notifyAll() |
677 |
finally:
|
678 |
sync.release() |
679 |
|
680 |
# Wait for exclusive acquire to succeed
|
681 |
exclev.wait() |
682 |
|
683 |
self.assertEqual(self.sl._count_pending(), 0) |
684 |
|
685 |
# Try to get exclusive lock
|
686 |
self.failIf(self.sl.acquire(shared=0, timeout=0.02)) |
687 |
|
688 |
def _AcquireSharedSimple(): |
689 |
if self.sl.acquire(shared=1, timeout=None): |
690 |
self.done.put("shared2") |
691 |
self.sl.release()
|
692 |
|
693 |
for _ in xrange(10): |
694 |
self._addThread(target=_AcquireSharedSimple)
|
695 |
|
696 |
# Tell exclusive lock to release
|
697 |
exclsync.acquire() |
698 |
try:
|
699 |
exclsync.notifyAll() |
700 |
finally:
|
701 |
exclsync.release() |
702 |
|
703 |
# Wait for everything to finish
|
704 |
self._waitThreads()
|
705 |
|
706 |
self.assertEqual(self.sl._count_pending(), 0) |
707 |
|
708 |
# Check sequence
|
709 |
for _ in xrange(3): |
710 |
self.assertEqual(self.done.get_nowait(), "shared") |
711 |
|
712 |
self.assertEqual(self.done.get_nowait(), "exclusive") |
713 |
|
714 |
for _ in xrange(10): |
715 |
self.assertEqual(self.done.get_nowait(), "shared2") |
716 |
|
717 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
718 |
|
719 |
|
720 |
class TestSSynchronizedDecorator(_ThreadedTestCase): |
721 |
"""Shared Lock Synchronized decorator test"""
|
722 |
|
723 |
def setUp(self): |
724 |
_ThreadedTestCase.setUp(self)
|
725 |
# helper threads use the 'done' queue to tell the master they finished.
|
726 |
self.done = Queue.Queue(0) |
727 |
|
728 |
@locking.ssynchronized(_decoratorlock)
|
729 |
def _doItExclusive(self): |
730 |
self.assert_(_decoratorlock._is_owned())
|
731 |
self.done.put('EXC') |
732 |
|
733 |
@locking.ssynchronized(_decoratorlock, shared=1) |
734 |
def _doItSharer(self): |
735 |
self.assert_(_decoratorlock._is_owned(shared=1)) |
736 |
self.done.put('SHR') |
737 |
|
738 |
def testDecoratedFunctions(self): |
739 |
self._doItExclusive()
|
740 |
self.assert_(not _decoratorlock._is_owned()) |
741 |
self._doItSharer()
|
742 |
self.assert_(not _decoratorlock._is_owned()) |
743 |
|
744 |
def testSharersCanCoexist(self): |
745 |
_decoratorlock.acquire(shared=1)
|
746 |
threading.Thread(target=self._doItSharer).start()
|
747 |
self.assert_(self.done.get(True, 1)) |
748 |
_decoratorlock.release() |
749 |
|
750 |
@_Repeat
|
751 |
def testExclusiveBlocksExclusive(self): |
752 |
_decoratorlock.acquire() |
753 |
self._addThread(target=self._doItExclusive) |
754 |
# give it a bit of time to check that it's not actually doing anything
|
755 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
756 |
_decoratorlock.release() |
757 |
self._waitThreads()
|
758 |
self.failUnlessEqual(self.done.get_nowait(), 'EXC') |
759 |
|
760 |
@_Repeat
|
761 |
def testExclusiveBlocksSharer(self): |
762 |
_decoratorlock.acquire() |
763 |
self._addThread(target=self._doItSharer) |
764 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
765 |
_decoratorlock.release() |
766 |
self._waitThreads()
|
767 |
self.failUnlessEqual(self.done.get_nowait(), 'SHR') |
768 |
|
769 |
@_Repeat
|
770 |
def testSharerBlocksExclusive(self): |
771 |
_decoratorlock.acquire(shared=1)
|
772 |
self._addThread(target=self._doItExclusive) |
773 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
774 |
_decoratorlock.release() |
775 |
self._waitThreads()
|
776 |
self.failUnlessEqual(self.done.get_nowait(), 'EXC') |
777 |
|
778 |
|
779 |
class TestLockSet(_ThreadedTestCase): |
780 |
"""LockSet tests"""
|
781 |
|
782 |
def setUp(self): |
783 |
_ThreadedTestCase.setUp(self)
|
784 |
self._setUpLS()
|
785 |
# helper threads use the 'done' queue to tell the master they finished.
|
786 |
self.done = Queue.Queue(0) |
787 |
|
788 |
def _setUpLS(self): |
789 |
"""Helper to (re)initialize the lock set"""
|
790 |
self.resources = ['one', 'two', 'three'] |
791 |
self.ls = locking.LockSet(members=self.resources) |
792 |
|
793 |
def testResources(self): |
794 |
self.assertEquals(self.ls._names(), set(self.resources)) |
795 |
newls = locking.LockSet() |
796 |
self.assertEquals(newls._names(), set()) |
797 |
|
798 |
def testAcquireRelease(self): |
799 |
self.assert_(self.ls.acquire('one')) |
800 |
self.assertEquals(self.ls._list_owned(), set(['one'])) |
801 |
self.ls.release()
|
802 |
self.assertEquals(self.ls._list_owned(), set()) |
803 |
self.assertEquals(self.ls.acquire(['one']), set(['one'])) |
804 |
self.assertEquals(self.ls._list_owned(), set(['one'])) |
805 |
self.ls.release()
|
806 |
self.assertEquals(self.ls._list_owned(), set()) |
807 |
self.ls.acquire(['one', 'two', 'three']) |
808 |
self.assertEquals(self.ls._list_owned(), set(['one', 'two', 'three'])) |
809 |
self.ls.release('one') |
810 |
self.assertEquals(self.ls._list_owned(), set(['two', 'three'])) |
811 |
self.ls.release(['three']) |
812 |
self.assertEquals(self.ls._list_owned(), set(['two'])) |
813 |
self.ls.release()
|
814 |
self.assertEquals(self.ls._list_owned(), set()) |
815 |
self.assertEquals(self.ls.acquire(['one', 'three']), set(['one', 'three'])) |
816 |
self.assertEquals(self.ls._list_owned(), set(['one', 'three'])) |
817 |
self.ls.release()
|
818 |
self.assertEquals(self.ls._list_owned(), set()) |
819 |
|
820 |
def testNoDoubleAcquire(self): |
821 |
self.ls.acquire('one') |
822 |
self.assertRaises(AssertionError, self.ls.acquire, 'one') |
823 |
self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
824 |
self.assertRaises(AssertionError, self.ls.acquire, ['two', 'three']) |
825 |
self.ls.release()
|
826 |
self.ls.acquire(['one', 'three']) |
827 |
self.ls.release('one') |
828 |
self.assertRaises(AssertionError, self.ls.acquire, ['two']) |
829 |
self.ls.release('three') |
830 |
|
831 |
def testNoWrongRelease(self): |
832 |
self.assertRaises(AssertionError, self.ls.release) |
833 |
self.ls.acquire('one') |
834 |
self.assertRaises(AssertionError, self.ls.release, 'two') |
835 |
|
836 |
def testAddRemove(self): |
837 |
self.ls.add('four') |
838 |
self.assertEquals(self.ls._list_owned(), set()) |
839 |
self.assert_('four' in self.ls._names()) |
840 |
self.ls.add(['five', 'six', 'seven'], acquired=1) |
841 |
self.assert_('five' in self.ls._names()) |
842 |
self.assert_('six' in self.ls._names()) |
843 |
self.assert_('seven' in self.ls._names()) |
844 |
self.assertEquals(self.ls._list_owned(), set(['five', 'six', 'seven'])) |
845 |
self.assertEquals(self.ls.remove(['five', 'six']), ['five', 'six']) |
846 |
self.assert_('five' not in self.ls._names()) |
847 |
self.assert_('six' not in self.ls._names()) |
848 |
self.assertEquals(self.ls._list_owned(), set(['seven'])) |
849 |
self.assertRaises(AssertionError, self.ls.add, 'eight', acquired=1) |
850 |
self.ls.remove('seven') |
851 |
self.assert_('seven' not in self.ls._names()) |
852 |
self.assertEquals(self.ls._list_owned(), set([])) |
853 |
self.ls.acquire(None, shared=1) |
854 |
self.assertRaises(AssertionError, self.ls.add, 'eight') |
855 |
self.ls.release()
|
856 |
self.ls.acquire(None) |
857 |
self.ls.add('eight', acquired=1) |
858 |
self.assert_('eight' in self.ls._names()) |
859 |
self.assert_('eight' in self.ls._list_owned()) |
860 |
self.ls.add('nine') |
861 |
self.assert_('nine' in self.ls._names()) |
862 |
self.assert_('nine' not in self.ls._list_owned()) |
863 |
self.ls.release()
|
864 |
self.ls.remove(['two']) |
865 |
self.assert_('two' not in self.ls._names()) |
866 |
self.ls.acquire('three') |
867 |
self.assertEquals(self.ls.remove(['three']), ['three']) |
868 |
self.assert_('three' not in self.ls._names()) |
869 |
self.assertEquals(self.ls.remove('three'), []) |
870 |
self.assertEquals(self.ls.remove(['one', 'three', 'six']), ['one']) |
871 |
self.assert_('one' not in self.ls._names()) |
872 |
|
873 |
def testRemoveNonBlocking(self): |
874 |
self.ls.acquire('one') |
875 |
self.assertEquals(self.ls.remove('one'), ['one']) |
876 |
self.ls.acquire(['two', 'three']) |
877 |
self.assertEquals(self.ls.remove(['two', 'three']), |
878 |
['two', 'three']) |
879 |
|
880 |
def testNoDoubleAdd(self): |
881 |
self.assertRaises(errors.LockError, self.ls.add, 'two') |
882 |
self.ls.add('four') |
883 |
self.assertRaises(errors.LockError, self.ls.add, 'four') |
884 |
|
885 |
def testNoWrongRemoves(self): |
886 |
self.ls.acquire(['one', 'three'], shared=1) |
887 |
# Cannot remove 'two' while holding something which is not a superset
|
888 |
self.assertRaises(AssertionError, self.ls.remove, 'two') |
889 |
# Cannot remove 'three' as we are sharing it
|
890 |
self.assertRaises(AssertionError, self.ls.remove, 'three') |
891 |
|
892 |
def testAcquireSetLock(self): |
893 |
# acquire the set-lock exclusively
|
894 |
self.assertEquals(self.ls.acquire(None), set(['one', 'two', 'three'])) |
895 |
self.assertEquals(self.ls._list_owned(), set(['one', 'two', 'three'])) |
896 |
self.assertEquals(self.ls._is_owned(), True) |
897 |
self.assertEquals(self.ls._names(), set(['one', 'two', 'three'])) |
898 |
# I can still add/remove elements...
|
899 |
self.assertEquals(self.ls.remove(['two', 'three']), ['two', 'three']) |
900 |
self.assert_(self.ls.add('six')) |
901 |
self.ls.release()
|
902 |
# share the set-lock
|
903 |
self.assertEquals(self.ls.acquire(None, shared=1), set(['one', 'six'])) |
904 |
# adding new elements is not possible
|
905 |
self.assertRaises(AssertionError, self.ls.add, 'five') |
906 |
self.ls.release()
|
907 |
|
908 |
def testAcquireWithRepetitions(self): |
909 |
self.assertEquals(self.ls.acquire(['two', 'two', 'three'], shared=1), |
910 |
set(['two', 'two', 'three'])) |
911 |
self.ls.release(['two', 'two']) |
912 |
self.assertEquals(self.ls._list_owned(), set(['three'])) |
913 |
|
914 |
def testEmptyAcquire(self): |
915 |
# Acquire an empty list of locks...
|
916 |
self.assertEquals(self.ls.acquire([]), set()) |
917 |
self.assertEquals(self.ls._list_owned(), set()) |
918 |
# New locks can still be addded
|
919 |
self.assert_(self.ls.add('six')) |
920 |
# "re-acquiring" is not an issue, since we had really acquired nothing
|
921 |
self.assertEquals(self.ls.acquire([], shared=1), set()) |
922 |
self.assertEquals(self.ls._list_owned(), set()) |
923 |
# We haven't really acquired anything, so we cannot release
|
924 |
self.assertRaises(AssertionError, self.ls.release) |
925 |
|
926 |
def _doLockSet(self, names, shared): |
927 |
try:
|
928 |
self.ls.acquire(names, shared=shared)
|
929 |
self.done.put('DONE') |
930 |
self.ls.release()
|
931 |
except errors.LockError:
|
932 |
self.done.put('ERR') |
933 |
|
934 |
def _doAddSet(self, names): |
935 |
try:
|
936 |
self.ls.add(names, acquired=1) |
937 |
self.done.put('DONE') |
938 |
self.ls.release()
|
939 |
except errors.LockError:
|
940 |
self.done.put('ERR') |
941 |
|
942 |
def _doRemoveSet(self, names): |
943 |
self.done.put(self.ls.remove(names)) |
944 |
|
945 |
@_Repeat
|
946 |
def testConcurrentSharedAcquire(self): |
947 |
self.ls.acquire(['one', 'two'], shared=1) |
948 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 1)) |
949 |
self._waitThreads()
|
950 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
951 |
self._addThread(target=self._doLockSet, args=(['one', 'two', 'three'], 1)) |
952 |
self._waitThreads()
|
953 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
954 |
self._addThread(target=self._doLockSet, args=('three', 1)) |
955 |
self._waitThreads()
|
956 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
957 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 0)) |
958 |
self._addThread(target=self._doLockSet, args=(['two', 'three'], 0)) |
959 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
960 |
self.ls.release()
|
961 |
self._waitThreads()
|
962 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
963 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
964 |
|
965 |
@_Repeat
|
966 |
def testConcurrentExclusiveAcquire(self): |
967 |
self.ls.acquire(['one', 'two']) |
968 |
self._addThread(target=self._doLockSet, args=('three', 1)) |
969 |
self._waitThreads()
|
970 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
971 |
self._addThread(target=self._doLockSet, args=('three', 0)) |
972 |
self._waitThreads()
|
973 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
974 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
975 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 0)) |
976 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 1)) |
977 |
self._addThread(target=self._doLockSet, args=('one', 0)) |
978 |
self._addThread(target=self._doLockSet, args=('one', 1)) |
979 |
self._addThread(target=self._doLockSet, args=(['two', 'three'], 0)) |
980 |
self._addThread(target=self._doLockSet, args=(['two', 'three'], 1)) |
981 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
982 |
self.ls.release()
|
983 |
self._waitThreads()
|
984 |
for _ in range(6): |
985 |
self.failUnlessEqual(self.done.get_nowait(), 'DONE') |
986 |
|
987 |
@_Repeat
|
988 |
def testConcurrentRemove(self): |
989 |
self.ls.add('four') |
990 |
self.ls.acquire(['one', 'two', 'four']) |
991 |
self._addThread(target=self._doLockSet, args=(['one', 'four'], 0)) |
992 |
self._addThread(target=self._doLockSet, args=(['one', 'four'], 1)) |
993 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 0)) |
994 |
self._addThread(target=self._doLockSet, args=(['one', 'two'], 1)) |
995 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
996 |
self.ls.remove('one') |
997 |
self.ls.release()
|
998 |
self._waitThreads()
|
999 |
for i in range(4): |
1000 |
self.failUnlessEqual(self.done.get_nowait(), 'ERR') |
1001 |
self.ls.add(['five', 'six'], acquired=1) |
1002 |
self._addThread(target=self._doLockSet, args=(['three', 'six'], 1)) |
1003 |
self._addThread(target=self._doLockSet, args=(['three', 'six'], 0)) |
1004 |
self._addThread(target=self._doLockSet, args=(['four', 'six'], 1)) |
1005 |
self._addThread(target=self._doLockSet, args=(['four', 'six'], 0)) |
1006 |
self.ls.remove('five') |
1007 |
self.ls.release()
|
1008 |
self._waitThreads()
|
1009 |
for i in range(4): |
1010 |
self.failUnlessEqual(self.done.get_nowait(), 'DONE') |
1011 |
self.ls.acquire(['three', 'four']) |
1012 |
self._addThread(target=self._doRemoveSet, args=(['four', 'six'], )) |
1013 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1014 |
self.ls.remove('four') |
1015 |
self._waitThreads()
|
1016 |
self.assertEqual(self.done.get_nowait(), ['six']) |
1017 |
self._addThread(target=self._doRemoveSet, args=(['two'])) |
1018 |
self._waitThreads()
|
1019 |
self.assertEqual(self.done.get_nowait(), ['two']) |
1020 |
self.ls.release()
|
1021 |
# reset lockset
|
1022 |
self._setUpLS()
|
1023 |
|
1024 |
@_Repeat
|
1025 |
def testConcurrentSharedSetLock(self): |
1026 |
# share the set-lock...
|
1027 |
self.ls.acquire(None, shared=1) |
1028 |
# ...another thread can share it too
|
1029 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1030 |
self._waitThreads()
|
1031 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1032 |
# ...or just share some elements
|
1033 |
self._addThread(target=self._doLockSet, args=(['one', 'three'], 1)) |
1034 |
self._waitThreads()
|
1035 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1036 |
# ...but not add new ones or remove any
|
1037 |
t = self._addThread(target=self._doAddSet, args=(['nine'])) |
1038 |
self._addThread(target=self._doRemoveSet, args=(['two'], )) |
1039 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1040 |
# this just releases the set-lock
|
1041 |
self.ls.release([])
|
1042 |
t.join(60)
|
1043 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1044 |
# release the lock on the actual elements so remove() can proceed too
|
1045 |
self.ls.release()
|
1046 |
self._waitThreads()
|
1047 |
self.failUnlessEqual(self.done.get_nowait(), ['two']) |
1048 |
# reset lockset
|
1049 |
self._setUpLS()
|
1050 |
|
1051 |
@_Repeat
|
1052 |
def testConcurrentExclusiveSetLock(self): |
1053 |
# acquire the set-lock...
|
1054 |
self.ls.acquire(None, shared=0) |
1055 |
# ...no one can do anything else
|
1056 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1057 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1058 |
self._addThread(target=self._doLockSet, args=(['three'], 0)) |
1059 |
self._addThread(target=self._doLockSet, args=(['two'], 1)) |
1060 |
self._addThread(target=self._doAddSet, args=(['nine'])) |
1061 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1062 |
self.ls.release()
|
1063 |
self._waitThreads()
|
1064 |
for _ in range(5): |
1065 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
1066 |
# cleanup
|
1067 |
self._setUpLS()
|
1068 |
|
1069 |
@_Repeat
|
1070 |
def testConcurrentSetLockAdd(self): |
1071 |
self.ls.acquire('one') |
1072 |
# Another thread wants the whole SetLock
|
1073 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1074 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1075 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1076 |
self.assertRaises(AssertionError, self.ls.add, 'four') |
1077 |
self.ls.release()
|
1078 |
self._waitThreads()
|
1079 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1080 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1081 |
self.ls.acquire(None) |
1082 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1083 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1084 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1085 |
self.ls.add('four') |
1086 |
self.ls.add('five', acquired=1) |
1087 |
self.ls.add('six', acquired=1, shared=1) |
1088 |
self.assertEquals(self.ls._list_owned(), |
1089 |
set(['one', 'two', 'three', 'five', 'six'])) |
1090 |
self.assertEquals(self.ls._is_owned(), True) |
1091 |
self.assertEquals(self.ls._names(), |
1092 |
set(['one', 'two', 'three', 'four', 'five', 'six'])) |
1093 |
self.ls.release()
|
1094 |
self._waitThreads()
|
1095 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1096 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1097 |
self._setUpLS()
|
1098 |
|
1099 |
@_Repeat
|
1100 |
def testEmptyLockSet(self): |
1101 |
# get the set-lock
|
1102 |
self.assertEqual(self.ls.acquire(None), set(['one', 'two', 'three'])) |
1103 |
# now empty it...
|
1104 |
self.ls.remove(['one', 'two', 'three']) |
1105 |
# and adds/locks by another thread still wait
|
1106 |
self._addThread(target=self._doAddSet, args=(['nine'])) |
1107 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1108 |
self._addThread(target=self._doLockSet, args=(None, 0)) |
1109 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1110 |
self.ls.release()
|
1111 |
self._waitThreads()
|
1112 |
for _ in range(3): |
1113 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1114 |
# empty it again...
|
1115 |
self.assertEqual(self.ls.remove(['nine']), ['nine']) |
1116 |
# now share it...
|
1117 |
self.assertEqual(self.ls.acquire(None, shared=1), set()) |
1118 |
# other sharers can go, adds still wait
|
1119 |
self._addThread(target=self._doLockSet, args=(None, 1)) |
1120 |
self._waitThreads()
|
1121 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1122 |
self._addThread(target=self._doAddSet, args=(['nine'])) |
1123 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1124 |
self.ls.release()
|
1125 |
self._waitThreads()
|
1126 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1127 |
self._setUpLS()
|
1128 |
|
1129 |
|
1130 |
class TestGanetiLockManager(_ThreadedTestCase): |
1131 |
|
1132 |
def setUp(self): |
1133 |
_ThreadedTestCase.setUp(self)
|
1134 |
self.nodes=['n1', 'n2'] |
1135 |
self.instances=['i1', 'i2', 'i3'] |
1136 |
self.GL = locking.GanetiLockManager(nodes=self.nodes, |
1137 |
instances=self.instances)
|
1138 |
self.done = Queue.Queue(0) |
1139 |
|
1140 |
def tearDown(self): |
1141 |
# Don't try this at home...
|
1142 |
locking.GanetiLockManager._instance = None
|
1143 |
|
1144 |
def testLockingConstants(self): |
1145 |
# The locking library internally cheats by assuming its constants have some
|
1146 |
# relationships with each other. Check those hold true.
|
1147 |
# This relationship is also used in the Processor to recursively acquire
|
1148 |
# the right locks. Again, please don't break it.
|
1149 |
for i in range(len(locking.LEVELS)): |
1150 |
self.assertEqual(i, locking.LEVELS[i])
|
1151 |
|
1152 |
def testDoubleGLFails(self): |
1153 |
self.assertRaises(AssertionError, locking.GanetiLockManager) |
1154 |
|
1155 |
def testLockNames(self): |
1156 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1157 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
1158 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
1159 |
set(self.instances)) |
1160 |
|
1161 |
def testInitAndResources(self): |
1162 |
locking.GanetiLockManager._instance = None
|
1163 |
self.GL = locking.GanetiLockManager()
|
1164 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1165 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
1166 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
1167 |
|
1168 |
locking.GanetiLockManager._instance = None
|
1169 |
self.GL = locking.GanetiLockManager(nodes=self.nodes) |
1170 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1171 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set(self.nodes)) |
1172 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), set()) |
1173 |
|
1174 |
locking.GanetiLockManager._instance = None
|
1175 |
self.GL = locking.GanetiLockManager(instances=self.instances) |
1176 |
self.assertEqual(self.GL._names(locking.LEVEL_CLUSTER), set(['BGL'])) |
1177 |
self.assertEqual(self.GL._names(locking.LEVEL_NODE), set()) |
1178 |
self.assertEqual(self.GL._names(locking.LEVEL_INSTANCE), |
1179 |
set(self.instances)) |
1180 |
|
1181 |
def testAcquireRelease(self): |
1182 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1183 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_CLUSTER), set(['BGL'])) |
1184 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1']) |
1185 |
self.GL.acquire(locking.LEVEL_NODE, ['n1', 'n2'], shared=1) |
1186 |
self.GL.release(locking.LEVEL_NODE, ['n2']) |
1187 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set(['n1'])) |
1188 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
1189 |
self.GL.release(locking.LEVEL_NODE)
|
1190 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), set()) |
1191 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i1'])) |
1192 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1193 |
self.assertRaises(errors.LockError, self.GL.acquire, |
1194 |
locking.LEVEL_INSTANCE, ['i5'])
|
1195 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3'], shared=1) |
1196 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), set(['i3'])) |
1197 |
|
1198 |
def testAcquireWholeSets(self): |
1199 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1200 |
self.assertEquals(self.GL.acquire(locking.LEVEL_INSTANCE, None), |
1201 |
set(self.instances)) |
1202 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), |
1203 |
set(self.instances)) |
1204 |
self.assertEquals(self.GL.acquire(locking.LEVEL_NODE, None, shared=1), |
1205 |
set(self.nodes)) |
1206 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), |
1207 |
set(self.nodes)) |
1208 |
self.GL.release(locking.LEVEL_NODE)
|
1209 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1210 |
self.GL.release(locking.LEVEL_CLUSTER)
|
1211 |
|
1212 |
def testAcquireWholeAndPartial(self): |
1213 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1214 |
self.assertEquals(self.GL.acquire(locking.LEVEL_INSTANCE, None), |
1215 |
set(self.instances)) |
1216 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_INSTANCE), |
1217 |
set(self.instances)) |
1218 |
self.assertEquals(self.GL.acquire(locking.LEVEL_NODE, ['n2'], shared=1), |
1219 |
set(['n2'])) |
1220 |
self.assertEquals(self.GL._list_owned(locking.LEVEL_NODE), |
1221 |
set(['n2'])) |
1222 |
self.GL.release(locking.LEVEL_NODE)
|
1223 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1224 |
self.GL.release(locking.LEVEL_CLUSTER)
|
1225 |
|
1226 |
def testBGLDependency(self): |
1227 |
self.assertRaises(AssertionError, self.GL.acquire, |
1228 |
locking.LEVEL_NODE, ['n1', 'n2']) |
1229 |
self.assertRaises(AssertionError, self.GL.acquire, |
1230 |
locking.LEVEL_INSTANCE, ['i3'])
|
1231 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1232 |
self.GL.acquire(locking.LEVEL_NODE, ['n1']) |
1233 |
self.assertRaises(AssertionError, self.GL.release, |
1234 |
locking.LEVEL_CLUSTER, ['BGL'])
|
1235 |
self.assertRaises(AssertionError, self.GL.release, |
1236 |
locking.LEVEL_CLUSTER) |
1237 |
self.GL.release(locking.LEVEL_NODE)
|
1238 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i1', 'i2']) |
1239 |
self.assertRaises(AssertionError, self.GL.release, |
1240 |
locking.LEVEL_CLUSTER, ['BGL'])
|
1241 |
self.assertRaises(AssertionError, self.GL.release, |
1242 |
locking.LEVEL_CLUSTER) |
1243 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1244 |
|
1245 |
def testWrongOrder(self): |
1246 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1247 |
self.GL.acquire(locking.LEVEL_NODE, ['n2']) |
1248 |
self.assertRaises(AssertionError, self.GL.acquire, |
1249 |
locking.LEVEL_NODE, ['n1'])
|
1250 |
self.assertRaises(AssertionError, self.GL.acquire, |
1251 |
locking.LEVEL_INSTANCE, ['i2'])
|
1252 |
|
1253 |
# Helper function to run as a thread that shared the BGL and then acquires
|
1254 |
# some locks at another level.
|
1255 |
def _doLock(self, level, names, shared): |
1256 |
try:
|
1257 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1258 |
self.GL.acquire(level, names, shared=shared)
|
1259 |
self.done.put('DONE') |
1260 |
self.GL.release(level)
|
1261 |
self.GL.release(locking.LEVEL_CLUSTER)
|
1262 |
except errors.LockError:
|
1263 |
self.done.put('ERR') |
1264 |
|
1265 |
@_Repeat
|
1266 |
def testConcurrency(self): |
1267 |
self.GL.acquire(locking.LEVEL_CLUSTER, ['BGL'], shared=1) |
1268 |
self._addThread(target=self._doLock, |
1269 |
args=(locking.LEVEL_INSTANCE, 'i1', 1)) |
1270 |
self._waitThreads()
|
1271 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1272 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i3']) |
1273 |
self._addThread(target=self._doLock, |
1274 |
args=(locking.LEVEL_INSTANCE, 'i1', 1)) |
1275 |
self._waitThreads()
|
1276 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1277 |
self._addThread(target=self._doLock, |
1278 |
args=(locking.LEVEL_INSTANCE, 'i3', 1)) |
1279 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1280 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1281 |
self._waitThreads()
|
1282 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1283 |
self.GL.acquire(locking.LEVEL_INSTANCE, ['i2'], shared=1) |
1284 |
self._addThread(target=self._doLock, |
1285 |
args=(locking.LEVEL_INSTANCE, 'i2', 1)) |
1286 |
self._waitThreads()
|
1287 |
self.assertEqual(self.done.get_nowait(), 'DONE') |
1288 |
self._addThread(target=self._doLock, |
1289 |
args=(locking.LEVEL_INSTANCE, 'i2', 0)) |
1290 |
self.assertRaises(Queue.Empty, self.done.get_nowait) |
1291 |
self.GL.release(locking.LEVEL_INSTANCE)
|
1292 |
self._waitThreads()
|
1293 |
self.assertEqual(self.done.get(True, 1), 'DONE') |
1294 |
self.GL.release(locking.LEVEL_CLUSTER, ['BGL']) |
1295 |
|
1296 |
|
1297 |
if __name__ == '__main__': |
1298 |
unittest.main() |
1299 |
#suite = unittest.TestLoader().loadTestsFromTestCase(TestSharedLock)
|
1300 |
#unittest.TextTestRunner(verbosity=2).run(suite)
|