mirror of https://github.com/python/cpython
Cleanups, and conversion of assert to assertEqual()
This commit is contained in:
Barry Warsaw
parent
71731d7f70
commit
a21bdeae51
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@ -1,23 +1,31 @@
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"""
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TestCases for multi-threaded access to a DB.
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"""TestCases for multi-threaded access to a DB.
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"""
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import sys, os, string
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import tempfile
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import os
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import sys
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import time
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import errno
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import shutil
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import tempfile
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from pprint import pprint
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from whrandom import random
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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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True, False
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except NameError:
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True = 1
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False = 0
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DASH = '-'
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try:
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from threading import Thread, currentThread
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have_threads = True
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except ImportError:
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have_threads = False
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import unittest
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from test_all import verbose
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from bsddb import db, dbutils
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#----------------------------------------------------------------------
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@ -28,15 +36,16 @@ class BaseThreadedTestCase(unittest.TestCase):
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dbsetflags = 0
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envflags = 0
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def setUp(self):
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if verbose:
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dbutils._deadlock_VerboseFile = sys.stdout
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homeDir = os.path.join(os.path.dirname(sys.argv[0]), '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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try:
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os.mkdir(homeDir)
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except OSError, e:
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if e.errno <> errno.EEXIST: raise
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self.env = db.DBEnv()
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self.setEnvOpts()
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self.env.open(homeDir, self.envflags | db.DB_CREATE)
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@ -47,22 +56,16 @@ class BaseThreadedTestCase(unittest.TestCase):
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self.d.set_flags(self.dbsetflags)
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self.d.open(self.filename, self.dbtype, self.dbopenflags|db.DB_CREATE)
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def tearDown(self):
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self.d.close()
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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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shutil.rmtree(self.homeDir)
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def setEnvOpts(self):
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pass
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def makeData(self, key):
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return string.join([key] * 5, '-')
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return DASH.join([key] * 5)
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#----------------------------------------------------------------------
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@ -75,7 +78,6 @@ class ConcurrentDataStoreBase(BaseThreadedTestCase):
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writers = 0
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records = 1000
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def test01_1WriterMultiReaders(self):
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if verbose:
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print '\n', '-=' * 30
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@ -102,11 +104,11 @@ class ConcurrentDataStoreBase(BaseThreadedTestCase):
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for t in threads:
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t.join()
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def writerThread(self, d, howMany, writerNum):
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#time.sleep(0.01 * writerNum + 0.01)
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name = currentThread().getName()
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start, stop = howMany * writerNum, howMany * (writerNum + 1) - 1
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start = howMany * writerNum
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stop = howMany * (writerNum + 1) - 1
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if verbose:
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print "%s: creating records %d - %d" % (name, start, stop)
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@ -117,7 +119,8 @@ class ConcurrentDataStoreBase(BaseThreadedTestCase):
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if verbose and x % 100 == 0:
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print "%s: records %d - %d finished" % (name, start, x)
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if verbose: print "%s: finished creating records" % name
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if verbose:
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print "%s: finished creating records" % name
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## # Each write-cursor will be exclusive, the only one that can update the DB...
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## if verbose: print "%s: deleting a few records" % name
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@ -130,8 +133,8 @@ class ConcurrentDataStoreBase(BaseThreadedTestCase):
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## c.delete()
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## c.close()
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if verbose: print "%s: thread finished" % name
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if verbose:
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print "%s: thread finished" % name
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def readerThread(self, d, readerNum):
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time.sleep(0.01 * readerNum)
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@ -142,16 +145,17 @@ class ConcurrentDataStoreBase(BaseThreadedTestCase):
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count = 0
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rec = c.first()
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while rec:
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count = count + 1
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count += 1
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key, data = rec
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assert self.makeData(key) == data
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self.assertEqual(self.makeData(key), data)
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rec = c.next()
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if verbose: print "%s: found %d records" % (name, count)
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if verbose:
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print "%s: found %d records" % (name, count)
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c.close()
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time.sleep(0.05)
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if verbose: print "%s: thread finished" % name
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if verbose:
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print "%s: thread finished" % name
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class BTreeConcurrentDataStore(ConcurrentDataStoreBase):
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@ -167,6 +171,7 @@ class HashConcurrentDataStore(ConcurrentDataStoreBase):
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readers = 10
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records = 1000
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#----------------------------------------------------------------------
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class SimpleThreadedBase(BaseThreadedTestCase):
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@ -176,11 +181,9 @@ class SimpleThreadedBase(BaseThreadedTestCase):
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writers = 3
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records = 1000
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def setEnvOpts(self):
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self.env.set_lk_detect(db.DB_LOCK_DEFAULT)
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def test02_SimpleLocks(self):
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if verbose:
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print '\n', '-=' * 30
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@ -205,11 +208,10 @@ class SimpleThreadedBase(BaseThreadedTestCase):
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for t in threads:
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t.join()
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def writerThread(self, d, howMany, writerNum):
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name = currentThread().getName()
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start, stop = howMany * writerNum, howMany * (writerNum + 1) - 1
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start = howMany * writerNum
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stop = howMany * (writerNum + 1) - 1
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if verbose:
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print "%s: creating records %d - %d" % (name, start, stop)
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@ -227,7 +229,7 @@ class SimpleThreadedBase(BaseThreadedTestCase):
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for y in xrange(start, x):
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key = '%04d' % x
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data = dbutils.DeadlockWrap(d.get, key, max_retries=12)
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assert data == self.makeData(key)
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self.assertEqual(data, self.makeData(key))
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# flush them
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try:
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@ -242,14 +244,14 @@ class SimpleThreadedBase(BaseThreadedTestCase):
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data = dbutils.DeadlockWrap(d.get, key, max_retries=12)
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if verbose and x % 100 == 0:
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print "%s: fetched record (%s, %s)" % (name, key, data)
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assert data == self.makeData(key), (key, data, self.makeData(key))
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self.assertEqual(data, self.makeData(key))
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if random() <= 0.10:
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dbutils.DeadlockWrap(d.delete, key, max_retries=12)
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if verbose:
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print "%s: deleted record %s" % (name, key)
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if verbose: print "%s: thread finished" % name
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if verbose:
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print "%s: thread finished" % name
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def readerThread(self, d, readerNum):
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time.sleep(0.01 * readerNum)
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@ -260,17 +262,17 @@ class SimpleThreadedBase(BaseThreadedTestCase):
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count = 0
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rec = c.first()
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while rec:
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count = count + 1
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count += 1
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key, data = rec
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assert self.makeData(key) == data
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self.assertEqual(self.makeData(key), data)
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rec = c.next()
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if verbose: print "%s: found %d records" % (name, count)
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if verbose:
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print "%s: found %d records" % (name, count)
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c.close()
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time.sleep(0.05)
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if verbose: print "%s: thread finished" % name
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if verbose:
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print "%s: thread finished" % name
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class BTreeSimpleThreaded(SimpleThreadedBase):
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@ -284,7 +286,6 @@ class HashSimpleThreaded(SimpleThreadedBase):
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#----------------------------------------------------------------------
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class ThreadedTransactionsBase(BaseThreadedTestCase):
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dbopenflags = db.DB_THREAD | db.DB_AUTO_COMMIT
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envflags = (db.DB_THREAD |
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@ -296,15 +297,12 @@ class ThreadedTransactionsBase(BaseThreadedTestCase):
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readers = 0
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writers = 0
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records = 2000
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txnFlag = 0
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def setEnvOpts(self):
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#self.env.set_lk_detect(db.DB_LOCK_DEFAULT)
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pass
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def test03_ThreadedTransactions(self):
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if verbose:
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print '\n', '-=' * 30
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for t in threads:
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t.join()
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self.doLockDetect = 0
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self.doLockDetect = False
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dt.join()
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def doWrite(self, d, name, start, stop):
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finished = 0
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finished = False
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while not finished:
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try:
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txn = self.env.txn_begin(None, self.txnFlag)
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if verbose and x % 100 == 0:
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print "%s: records %d - %d finished" % (name, start, x)
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txn.commit()
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finished = 1
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finished = True
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except (db.DBLockDeadlockError, db.DBLockNotGrantedError), val:
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if verbose:
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print "%s: Aborting transaction (%s)" % (name, val[1])
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txn.abort()
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time.sleep(0.05)
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def writerThread(self, d, howMany, writerNum):
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name = currentThread().getName()
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start, stop = howMany * writerNum, howMany * (writerNum + 1) - 1
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start = howMany * writerNum
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stop = howMany * (writerNum + 1) - 1
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if verbose:
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print "%s: creating records %d - %d" % (name, start, stop)
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@ -368,10 +364,12 @@ class ThreadedTransactionsBase(BaseThreadedTestCase):
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for x in range(start, stop, step):
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self.doWrite(d, name, x, min(stop, x+step))
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if verbose: print "%s: finished creating records" % name
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if verbose: print "%s: deleting a few records" % name
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if verbose:
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print "%s: finished creating records" % name
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if verbose:
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print "%s: deleting a few records" % name
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finished = 0
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finished = False
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while not finished:
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try:
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recs = []
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@ -384,23 +382,24 @@ class ThreadedTransactionsBase(BaseThreadedTestCase):
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d.delete(key, txn)
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recs.append(key)
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txn.commit()
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finished = 1
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if verbose: print "%s: deleted records %s" % (name, recs)
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finished = True
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if verbose:
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print "%s: deleted records %s" % (name, recs)
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except (db.DBLockDeadlockError, db.DBLockNotGrantedError), val:
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if verbose:
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print "%s: Aborting transaction (%s)" % (name, val[1])
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txn.abort()
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time.sleep(0.05)
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if verbose: print "%s: thread finished" % name
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if verbose:
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print "%s: thread finished" % name
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def readerThread(self, d, readerNum):
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time.sleep(0.01 * readerNum + 0.05)
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name = currentThread().getName()
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for loop in range(5):
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finished = 0
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finished = False
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while not finished:
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try:
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txn = self.env.txn_begin(None, self.txnFlag)
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@ -408,14 +407,14 @@ class ThreadedTransactionsBase(BaseThreadedTestCase):
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count = 0
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rec = c.first()
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while rec:
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count = count + 1
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count += 1
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key, data = rec
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assert self.makeData(key) == data
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self.assertEqual(self.makeData(key), data)
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rec = c.next()
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if verbose: print "%s: found %d records" % (name, count)
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c.close()
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txn.commit()
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finished = 1
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finished = True
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except (db.DBLockDeadlockError, db.DBLockNotGrantedError), val:
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if verbose:
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print "%s: Aborting transaction (%s)" % (name, val[1])
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@ -425,11 +424,11 @@ class ThreadedTransactionsBase(BaseThreadedTestCase):
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time.sleep(0.05)
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if verbose: print "%s: thread finished" % name
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if verbose:
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print "%s: thread finished" % name
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def deadlockThread(self):
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self.doLockDetect = 1
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self.doLockDetect = True
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while self.doLockDetect:
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time.sleep(0.5)
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try:
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@ -442,7 +441,6 @@ class ThreadedTransactionsBase(BaseThreadedTestCase):
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pass
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class BTreeThreadedTransactions(ThreadedTransactionsBase):
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dbtype = db.DB_BTREE
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writers = 3
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