mirror of https://github.com/python/cpython
144 lines
4.1 KiB
Python
144 lines
4.1 KiB
Python
"""
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TestCases for testing the locking sub-system.
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"""
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import sys, os
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import tempfile
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import time
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from pprint import pprint
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try:
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from threading import Thread, currentThread
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have_threads = 1
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except ImportError:
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have_threads = 0
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import unittest
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from .test_all import verbose
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try:
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# For Pythons w/distutils pybsddb
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from bsddb3 import db
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except ImportError:
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# For Python 2.3
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from bsddb import db
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#----------------------------------------------------------------------
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class LockingTestCase(unittest.TestCase):
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def setUp(self):
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homeDir = os.path.join(tempfile.gettempdir(), 'db_home')
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self.homeDir = homeDir
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try: os.mkdir(homeDir)
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except os.error: pass
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self.env = db.DBEnv()
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self.env.open(homeDir, db.DB_THREAD | db.DB_INIT_MPOOL |
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db.DB_INIT_LOCK | db.DB_CREATE)
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def tearDown(self):
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self.env.close()
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import glob
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files = glob.glob(os.path.join(self.homeDir, '*'))
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for file in files:
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os.remove(file)
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def test01_simple(self):
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if verbose:
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print('\n', '-=' * 30)
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print("Running %s.test01_simple..." % self.__class__.__name__)
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anID = self.env.lock_id()
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if verbose:
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print("locker ID: %s" % anID)
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lock = self.env.lock_get(anID, b"some locked thing", db.DB_LOCK_WRITE)
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if verbose:
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print("Aquired lock: %s" % lock)
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time.sleep(1)
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self.env.lock_put(lock)
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if verbose:
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print("Released lock: %s" % lock)
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def test02_threaded(self):
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if verbose:
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print('\n', '-=' * 30)
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print("Running %s.test02_threaded..." % self.__class__.__name__)
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threads = []
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threads.append(Thread(target = self.theThread,
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args=(5, db.DB_LOCK_WRITE)))
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threads.append(Thread(target = self.theThread,
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args=(1, db.DB_LOCK_READ)))
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threads.append(Thread(target = self.theThread,
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args=(1, db.DB_LOCK_READ)))
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threads.append(Thread(target = self.theThread,
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args=(1, db.DB_LOCK_WRITE)))
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threads.append(Thread(target = self.theThread,
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args=(1, db.DB_LOCK_READ)))
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threads.append(Thread(target = self.theThread,
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args=(1, db.DB_LOCK_READ)))
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threads.append(Thread(target = self.theThread,
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args=(1, db.DB_LOCK_WRITE)))
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threads.append(Thread(target = self.theThread,
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args=(1, db.DB_LOCK_WRITE)))
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threads.append(Thread(target = self.theThread,
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args=(1, db.DB_LOCK_WRITE)))
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for t in threads:
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t.start()
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for t in threads:
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t.join()
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def test03_set_timeout(self):
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# test that the set_timeout call works
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if hasattr(self.env, 'set_timeout'):
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self.env.set_timeout(0, db.DB_SET_LOCK_TIMEOUT)
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self.env.set_timeout(0, db.DB_SET_TXN_TIMEOUT)
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self.env.set_timeout(123456, db.DB_SET_LOCK_TIMEOUT)
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self.env.set_timeout(7890123, db.DB_SET_TXN_TIMEOUT)
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def theThread(self, sleepTime, lockType):
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name = currentThread().getName()
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if lockType == db.DB_LOCK_WRITE:
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lt = "write"
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else:
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lt = "read"
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anID = self.env.lock_id()
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if verbose:
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print("%s: locker ID: %s" % (name, anID))
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lock = self.env.lock_get(anID, b"some locked thing", lockType)
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if verbose:
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print("%s: Aquired %s lock: %s" % (name, lt, lock))
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time.sleep(sleepTime)
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self.env.lock_put(lock)
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if verbose:
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print("%s: Released %s lock: %s" % (name, lt, lock))
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#----------------------------------------------------------------------
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def test_suite():
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suite = unittest.TestSuite()
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if have_threads:
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suite.addTest(unittest.makeSuite(LockingTestCase))
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else:
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suite.addTest(unittest.makeSuite(LockingTestCase, 'test01'))
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return suite
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if __name__ == '__main__':
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unittest.main(defaultTest='test_suite')
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