| 1 | """TestCases for multi-threaded access to a DB.
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| 2 | """
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| 3 |
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| 4 | import os
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| 5 | import sys
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| 6 | import time
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| 7 | import errno
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| 8 | from random import random
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| 9 |
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| 10 | DASH = '-'
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| 11 |
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| 12 | try:
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| 13 | WindowsError
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| 14 | except NameError:
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| 15 | class WindowsError(Exception):
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| 16 | pass
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| 17 |
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| 18 | import unittest
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| 19 | from test_all import db, dbutils, test_support, verbose, have_threads, \
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| 20 | get_new_environment_path, get_new_database_path
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| 21 |
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| 22 | if have_threads :
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| 23 | from threading import Thread
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| 24 | if sys.version_info[0] < 3 :
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| 25 | from threading import currentThread
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| 26 | else :
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| 27 | from threading import current_thread as currentThread
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| 28 |
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| 29 |
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| 30 | #----------------------------------------------------------------------
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| 31 |
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| 32 | class BaseThreadedTestCase(unittest.TestCase):
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| 33 | dbtype = db.DB_UNKNOWN # must be set in derived class
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| 34 | dbopenflags = 0
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| 35 | dbsetflags = 0
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| 36 | envflags = 0
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| 37 |
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| 38 | def setUp(self):
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| 39 | if verbose:
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| 40 | dbutils._deadlock_VerboseFile = sys.stdout
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| 41 |
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| 42 | self.homeDir = get_new_environment_path()
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| 43 | self.env = db.DBEnv()
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| 44 | self.setEnvOpts()
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| 45 | self.env.open(self.homeDir, self.envflags | db.DB_CREATE)
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| 46 |
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| 47 | self.filename = self.__class__.__name__ + '.db'
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| 48 | self.d = db.DB(self.env)
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| 49 | if self.dbsetflags:
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| 50 | self.d.set_flags(self.dbsetflags)
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| 51 | self.d.open(self.filename, self.dbtype, self.dbopenflags|db.DB_CREATE)
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| 52 |
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| 53 | def tearDown(self):
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| 54 | self.d.close()
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| 55 | self.env.close()
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| 56 | test_support.rmtree(self.homeDir)
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| 57 |
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| 58 | def setEnvOpts(self):
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| 59 | pass
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| 60 |
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| 61 | def makeData(self, key):
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| 62 | return DASH.join([key] * 5)
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| 63 |
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| 64 |
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| 65 | #----------------------------------------------------------------------
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| 66 |
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| 67 |
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| 68 | class ConcurrentDataStoreBase(BaseThreadedTestCase):
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| 69 | dbopenflags = db.DB_THREAD
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| 70 | envflags = db.DB_THREAD | db.DB_INIT_CDB | db.DB_INIT_MPOOL
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| 71 | readers = 0 # derived class should set
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| 72 | writers = 0
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| 73 | records = 1000
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| 74 |
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| 75 | def test01_1WriterMultiReaders(self):
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| 76 | if verbose:
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| 77 | print '\n', '-=' * 30
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| 78 | print "Running %s.test01_1WriterMultiReaders..." % \
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| 79 | self.__class__.__name__
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| 80 |
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| 81 | keys=range(self.records)
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| 82 | import random
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| 83 | random.shuffle(keys)
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| 84 | records_per_writer=self.records//self.writers
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| 85 | readers_per_writer=self.readers//self.writers
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| 86 | self.assertEqual(self.records,self.writers*records_per_writer)
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| 87 | self.assertEqual(self.readers,self.writers*readers_per_writer)
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| 88 | self.assertTrue((records_per_writer%readers_per_writer)==0)
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| 89 | readers = []
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| 90 |
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| 91 | for x in xrange(self.readers):
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| 92 | rt = Thread(target = self.readerThread,
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| 93 | args = (self.d, x),
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| 94 | name = 'reader %d' % x,
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| 95 | )#verbose = verbose)
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| 96 | if sys.version_info[0] < 3 :
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| 97 | rt.setDaemon(True)
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| 98 | else :
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| 99 | rt.daemon = True
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| 100 | readers.append(rt)
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| 101 |
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| 102 | writers=[]
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| 103 | for x in xrange(self.writers):
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| 104 | a=keys[records_per_writer*x:records_per_writer*(x+1)]
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| 105 | a.sort() # Generate conflicts
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| 106 | b=readers[readers_per_writer*x:readers_per_writer*(x+1)]
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| 107 | wt = Thread(target = self.writerThread,
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| 108 | args = (self.d, a, b),
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| 109 | name = 'writer %d' % x,
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| 110 | )#verbose = verbose)
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| 111 | writers.append(wt)
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| 112 |
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| 113 | for t in writers:
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| 114 | if sys.version_info[0] < 3 :
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| 115 | t.setDaemon(True)
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| 116 | else :
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| 117 | t.daemon = True
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| 118 | t.start()
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| 119 |
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| 120 | for t in writers:
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| 121 | t.join()
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| 122 | for t in readers:
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| 123 | t.join()
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| 124 |
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| 125 | def writerThread(self, d, keys, readers):
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| 126 | if sys.version_info[0] < 3 :
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| 127 | name = currentThread().getName()
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| 128 | else :
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| 129 | name = currentThread().name
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| 130 |
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| 131 | if verbose:
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| 132 | print "%s: creating records %d - %d" % (name, start, stop)
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| 133 |
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| 134 | count=len(keys)//len(readers)
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| 135 | count2=count
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| 136 | for x in keys :
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| 137 | key = '%04d' % x
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| 138 | dbutils.DeadlockWrap(d.put, key, self.makeData(key),
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| 139 | max_retries=12)
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| 140 | if verbose and x % 100 == 0:
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| 141 | print "%s: records %d - %d finished" % (name, start, x)
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| 142 |
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| 143 | count2-=1
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| 144 | if not count2 :
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| 145 | readers.pop().start()
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| 146 | count2=count
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| 147 |
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| 148 | if verbose:
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| 149 | print "%s: finished creating records" % name
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| 150 |
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| 151 | if verbose:
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| 152 | print "%s: thread finished" % name
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| 153 |
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| 154 | def readerThread(self, d, readerNum):
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| 155 | if sys.version_info[0] < 3 :
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| 156 | name = currentThread().getName()
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| 157 | else :
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| 158 | name = currentThread().name
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| 159 |
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| 160 | for i in xrange(5) :
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| 161 | c = d.cursor()
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| 162 | count = 0
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| 163 | rec = c.first()
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| 164 | while rec:
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| 165 | count += 1
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| 166 | key, data = rec
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| 167 | self.assertEqual(self.makeData(key), data)
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| 168 | rec = c.next()
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| 169 | if verbose:
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| 170 | print "%s: found %d records" % (name, count)
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| 171 | c.close()
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| 172 |
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| 173 | if verbose:
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| 174 | print "%s: thread finished" % name
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| 175 |
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| 176 |
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| 177 | class BTreeConcurrentDataStore(ConcurrentDataStoreBase):
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| 178 | dbtype = db.DB_BTREE
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| 179 | writers = 2
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| 180 | readers = 10
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| 181 | records = 1000
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| 182 |
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| 183 |
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| 184 | class HashConcurrentDataStore(ConcurrentDataStoreBase):
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| 185 | dbtype = db.DB_HASH
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| 186 | writers = 2
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| 187 | readers = 10
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| 188 | records = 1000
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| 189 |
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| 190 |
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| 191 | #----------------------------------------------------------------------
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| 192 |
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| 193 | class SimpleThreadedBase(BaseThreadedTestCase):
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| 194 | dbopenflags = db.DB_THREAD
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| 195 | envflags = db.DB_THREAD | db.DB_INIT_MPOOL | db.DB_INIT_LOCK
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| 196 | readers = 10
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| 197 | writers = 2
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| 198 | records = 1000
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| 199 |
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| 200 | def setEnvOpts(self):
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| 201 | self.env.set_lk_detect(db.DB_LOCK_DEFAULT)
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| 202 |
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| 203 | def test02_SimpleLocks(self):
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| 204 | if verbose:
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| 205 | print '\n', '-=' * 30
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| 206 | print "Running %s.test02_SimpleLocks..." % self.__class__.__name__
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| 207 |
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| 208 |
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| 209 | keys=range(self.records)
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| 210 | import random
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| 211 | random.shuffle(keys)
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| 212 | records_per_writer=self.records//self.writers
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| 213 | readers_per_writer=self.readers//self.writers
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| 214 | self.assertEqual(self.records,self.writers*records_per_writer)
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| 215 | self.assertEqual(self.readers,self.writers*readers_per_writer)
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| 216 | self.assertTrue((records_per_writer%readers_per_writer)==0)
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| 217 |
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| 218 | readers = []
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| 219 | for x in xrange(self.readers):
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| 220 | rt = Thread(target = self.readerThread,
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| 221 | args = (self.d, x),
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| 222 | name = 'reader %d' % x,
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| 223 | )#verbose = verbose)
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| 224 | if sys.version_info[0] < 3 :
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| 225 | rt.setDaemon(True)
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| 226 | else :
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| 227 | rt.daemon = True
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| 228 | readers.append(rt)
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| 229 |
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| 230 | writers = []
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| 231 | for x in xrange(self.writers):
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| 232 | a=keys[records_per_writer*x:records_per_writer*(x+1)]
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| 233 | a.sort() # Generate conflicts
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| 234 | b=readers[readers_per_writer*x:readers_per_writer*(x+1)]
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| 235 | wt = Thread(target = self.writerThread,
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| 236 | args = (self.d, a, b),
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| 237 | name = 'writer %d' % x,
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| 238 | )#verbose = verbose)
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| 239 | writers.append(wt)
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| 240 |
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| 241 | for t in writers:
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| 242 | if sys.version_info[0] < 3 :
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| 243 | t.setDaemon(True)
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| 244 | else :
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| 245 | t.daemon = True
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| 246 | t.start()
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| 247 |
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| 248 | for t in writers:
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| 249 | t.join()
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| 250 | for t in readers:
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| 251 | t.join()
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| 252 |
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| 253 | def writerThread(self, d, keys, readers):
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| 254 | if sys.version_info[0] < 3 :
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| 255 | name = currentThread().getName()
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| 256 | else :
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| 257 | name = currentThread().name
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| 258 | if verbose:
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| 259 | print "%s: creating records %d - %d" % (name, start, stop)
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| 260 |
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| 261 | count=len(keys)//len(readers)
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| 262 | count2=count
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| 263 | for x in keys :
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| 264 | key = '%04d' % x
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| 265 | dbutils.DeadlockWrap(d.put, key, self.makeData(key),
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| 266 | max_retries=12)
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| 267 |
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| 268 | if verbose and x % 100 == 0:
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| 269 | print "%s: records %d - %d finished" % (name, start, x)
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| 270 |
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| 271 | count2-=1
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| 272 | if not count2 :
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| 273 | readers.pop().start()
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| 274 | count2=count
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| 275 |
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| 276 | if verbose:
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| 277 | print "%s: thread finished" % name
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| 278 |
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| 279 | def readerThread(self, d, readerNum):
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| 280 | if sys.version_info[0] < 3 :
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| 281 | name = currentThread().getName()
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| 282 | else :
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| 283 | name = currentThread().name
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| 284 |
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| 285 | c = d.cursor()
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| 286 | count = 0
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| 287 | rec = dbutils.DeadlockWrap(c.first, max_retries=10)
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| 288 | while rec:
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| 289 | count += 1
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| 290 | key, data = rec
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| 291 | self.assertEqual(self.makeData(key), data)
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| 292 | rec = dbutils.DeadlockWrap(c.next, max_retries=10)
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| 293 | if verbose:
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| 294 | print "%s: found %d records" % (name, count)
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| 295 | c.close()
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| 296 |
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| 297 | if verbose:
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| 298 | print "%s: thread finished" % name
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| 299 |
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| 300 |
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| 301 | class BTreeSimpleThreaded(SimpleThreadedBase):
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| 302 | dbtype = db.DB_BTREE
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| 303 |
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| 304 |
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| 305 | class HashSimpleThreaded(SimpleThreadedBase):
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| 306 | dbtype = db.DB_HASH
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| 307 |
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| 308 |
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| 309 | #----------------------------------------------------------------------
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| 310 |
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| 311 |
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| 312 | class ThreadedTransactionsBase(BaseThreadedTestCase):
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| 313 | dbopenflags = db.DB_THREAD | db.DB_AUTO_COMMIT
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| 314 | envflags = (db.DB_THREAD |
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| 315 | db.DB_INIT_MPOOL |
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| 316 | db.DB_INIT_LOCK |
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| 317 | db.DB_INIT_LOG |
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| 318 | db.DB_INIT_TXN
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| 319 | )
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| 320 | readers = 0
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| 321 | writers = 0
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| 322 | records = 2000
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| 323 | txnFlag = 0
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| 324 |
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| 325 | def setEnvOpts(self):
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| 326 | #self.env.set_lk_detect(db.DB_LOCK_DEFAULT)
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| 327 | pass
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| 328 |
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| 329 | def test03_ThreadedTransactions(self):
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| 330 | if verbose:
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| 331 | print '\n', '-=' * 30
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| 332 | print "Running %s.test03_ThreadedTransactions..." % \
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| 333 | self.__class__.__name__
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| 334 |
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| 335 | keys=range(self.records)
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| 336 | import random
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| 337 | random.shuffle(keys)
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| 338 | records_per_writer=self.records//self.writers
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| 339 | readers_per_writer=self.readers//self.writers
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| 340 | self.assertEqual(self.records,self.writers*records_per_writer)
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| 341 | self.assertEqual(self.readers,self.writers*readers_per_writer)
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| 342 | self.assertTrue((records_per_writer%readers_per_writer)==0)
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| 343 |
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| 344 | readers=[]
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| 345 | for x in xrange(self.readers):
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| 346 | rt = Thread(target = self.readerThread,
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| 347 | args = (self.d, x),
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| 348 | name = 'reader %d' % x,
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| 349 | )#verbose = verbose)
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| 350 | if sys.version_info[0] < 3 :
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| 351 | rt.setDaemon(True)
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| 352 | else :
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| 353 | rt.daemon = True
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| 354 | readers.append(rt)
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| 355 |
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| 356 | writers = []
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| 357 | for x in xrange(self.writers):
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| 358 | a=keys[records_per_writer*x:records_per_writer*(x+1)]
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| 359 | b=readers[readers_per_writer*x:readers_per_writer*(x+1)]
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| 360 | wt = Thread(target = self.writerThread,
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| 361 | args = (self.d, a, b),
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| 362 | name = 'writer %d' % x,
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| 363 | )#verbose = verbose)
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| 364 | writers.append(wt)
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| 365 |
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| 366 | dt = Thread(target = self.deadlockThread)
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| 367 | if sys.version_info[0] < 3 :
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| 368 | dt.setDaemon(True)
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| 369 | else :
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| 370 | dt.daemon = True
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| 371 | dt.start()
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| 372 |
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| 373 | for t in writers:
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| 374 | if sys.version_info[0] < 3 :
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| 375 | t.setDaemon(True)
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| 376 | else :
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| 377 | t.daemon = True
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| 378 | t.start()
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| 379 |
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| 380 | for t in writers:
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| 381 | t.join()
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| 382 | for t in readers:
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| 383 | t.join()
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| 384 |
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| 385 | self.doLockDetect = False
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| 386 | dt.join()
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| 387 |
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| 388 | def writerThread(self, d, keys, readers):
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| 389 | if sys.version_info[0] < 3 :
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| 390 | name = currentThread().getName()
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| 391 | else :
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| 392 | name = currentThread().name
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| 393 |
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| 394 | count=len(keys)//len(readers)
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| 395 | while len(keys):
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| 396 | try:
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| 397 | txn = self.env.txn_begin(None, self.txnFlag)
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| 398 | keys2=keys[:count]
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| 399 | for x in keys2 :
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| 400 | key = '%04d' % x
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| 401 | d.put(key, self.makeData(key), txn)
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| 402 | if verbose and x % 100 == 0:
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| 403 | print "%s: records %d - %d finished" % (name, start, x)
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| 404 | txn.commit()
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| 405 | keys=keys[count:]
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| 406 | readers.pop().start()
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| 407 | except (db.DBLockDeadlockError, db.DBLockNotGrantedError), val:
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| 408 | if verbose:
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| 409 | if sys.version_info < (2, 6) :
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| 410 | print "%s: Aborting transaction (%s)" % (name, val[1])
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| 411 | else :
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| 412 | print "%s: Aborting transaction (%s)" % (name,
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| 413 | val.args[1])
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| 414 | txn.abort()
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| 415 |
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| 416 | if verbose:
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| 417 | print "%s: thread finished" % name
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| 418 |
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| 419 | def readerThread(self, d, readerNum):
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| 420 | if sys.version_info[0] < 3 :
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| 421 | name = currentThread().getName()
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| 422 | else :
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| 423 | name = currentThread().name
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| 424 |
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| 425 | finished = False
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| 426 | while not finished:
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| 427 | try:
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| 428 | txn = self.env.txn_begin(None, self.txnFlag)
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| 429 | c = d.cursor(txn)
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| 430 | count = 0
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| 431 | rec = c.first()
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| 432 | while rec:
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| 433 | count += 1
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| 434 | key, data = rec
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| 435 | self.assertEqual(self.makeData(key), data)
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| 436 | rec = c.next()
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| 437 | if verbose: print "%s: found %d records" % (name, count)
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| 438 | c.close()
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| 439 | txn.commit()
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| 440 | finished = True
|
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| 441 | except (db.DBLockDeadlockError, db.DBLockNotGrantedError), val:
|
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| 442 | if verbose:
|
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| 443 | if sys.version_info < (2, 6) :
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| 444 | print "%s: Aborting transaction (%s)" % (name, val[1])
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|---|
| 445 | else :
|
|---|
| 446 | print "%s: Aborting transaction (%s)" % (name,
|
|---|
| 447 | val.args[1])
|
|---|
| 448 | c.close()
|
|---|
| 449 | txn.abort()
|
|---|
| 450 |
|
|---|
| 451 | if verbose:
|
|---|
| 452 | print "%s: thread finished" % name
|
|---|
| 453 |
|
|---|
| 454 | def deadlockThread(self):
|
|---|
| 455 | self.doLockDetect = True
|
|---|
| 456 | while self.doLockDetect:
|
|---|
| 457 | time.sleep(0.05)
|
|---|
| 458 | try:
|
|---|
| 459 | aborted = self.env.lock_detect(
|
|---|
| 460 | db.DB_LOCK_RANDOM, db.DB_LOCK_CONFLICT)
|
|---|
| 461 | if verbose and aborted:
|
|---|
| 462 | print "deadlock: Aborted %d deadlocked transaction(s)" \
|
|---|
| 463 | % aborted
|
|---|
| 464 | except db.DBError:
|
|---|
| 465 | pass
|
|---|
| 466 |
|
|---|
| 467 |
|
|---|
| 468 | class BTreeThreadedTransactions(ThreadedTransactionsBase):
|
|---|
| 469 | dbtype = db.DB_BTREE
|
|---|
| 470 | writers = 2
|
|---|
| 471 | readers = 10
|
|---|
| 472 | records = 1000
|
|---|
| 473 |
|
|---|
| 474 | class HashThreadedTransactions(ThreadedTransactionsBase):
|
|---|
| 475 | dbtype = db.DB_HASH
|
|---|
| 476 | writers = 2
|
|---|
| 477 | readers = 10
|
|---|
| 478 | records = 1000
|
|---|
| 479 |
|
|---|
| 480 | class BTreeThreadedNoWaitTransactions(ThreadedTransactionsBase):
|
|---|
| 481 | dbtype = db.DB_BTREE
|
|---|
| 482 | writers = 2
|
|---|
| 483 | readers = 10
|
|---|
| 484 | records = 1000
|
|---|
| 485 | txnFlag = db.DB_TXN_NOWAIT
|
|---|
| 486 |
|
|---|
| 487 | class HashThreadedNoWaitTransactions(ThreadedTransactionsBase):
|
|---|
| 488 | dbtype = db.DB_HASH
|
|---|
| 489 | writers = 2
|
|---|
| 490 | readers = 10
|
|---|
| 491 | records = 1000
|
|---|
| 492 | txnFlag = db.DB_TXN_NOWAIT
|
|---|
| 493 |
|
|---|
| 494 |
|
|---|
| 495 | #----------------------------------------------------------------------
|
|---|
| 496 |
|
|---|
| 497 | def test_suite():
|
|---|
| 498 | suite = unittest.TestSuite()
|
|---|
| 499 |
|
|---|
| 500 | if have_threads:
|
|---|
| 501 | suite.addTest(unittest.makeSuite(BTreeConcurrentDataStore))
|
|---|
| 502 | suite.addTest(unittest.makeSuite(HashConcurrentDataStore))
|
|---|
| 503 | suite.addTest(unittest.makeSuite(BTreeSimpleThreaded))
|
|---|
| 504 | suite.addTest(unittest.makeSuite(HashSimpleThreaded))
|
|---|
| 505 | suite.addTest(unittest.makeSuite(BTreeThreadedTransactions))
|
|---|
| 506 | suite.addTest(unittest.makeSuite(HashThreadedTransactions))
|
|---|
| 507 | suite.addTest(unittest.makeSuite(BTreeThreadedNoWaitTransactions))
|
|---|
| 508 | suite.addTest(unittest.makeSuite(HashThreadedNoWaitTransactions))
|
|---|
| 509 |
|
|---|
| 510 | else:
|
|---|
| 511 | print "Threads not available, skipping thread tests."
|
|---|
| 512 |
|
|---|
| 513 | return suite
|
|---|
| 514 |
|
|---|
| 515 |
|
|---|
| 516 | if __name__ == '__main__':
|
|---|
| 517 | unittest.main(defaultTest='test_suite')
|
|---|
