projects / OpenSPARC-T2-SAM / blame
| Commit | Line | Data |
|---|---|---|
| 920dae64 AT |
1 | """ |
| 2 | TestCases for testing the locking sub-system. | |
| 3 | """ | |
| 4 | ||
| 5 | import sys, os, string | |
| 6 | import tempfile | |
| 7 | import time | |
| 8 | from pprint import pprint | |
| 9 | ||
| 10 | try: | |
| 11 | from threading import Thread, currentThread | |
| 12 | have_threads = 1 | |
| 13 | except ImportError: | |
| 14 | have_threads = 0 | |
| 15 | ||
| 16 | ||
| 17 | import unittest | |
| 18 | from test_all import verbose | |
| 19 | ||
| 20 | try: | |
| 21 | # For Pythons w/distutils pybsddb | |
| 22 | from bsddb3 import db | |
| 23 | except ImportError: | |
| 24 | # For Python 2.3 | |
| 25 | from bsddb import db | |
| 26 | ||
| 27 | ||
| 28 | #---------------------------------------------------------------------- | |
| 29 | ||
| 30 | class LockingTestCase(unittest.TestCase): | |
| 31 | ||
| 32 | def setUp(self): | |
| 33 | homeDir = os.path.join(os.path.dirname(sys.argv[0]), 'db_home') | |
| 34 | self.homeDir = homeDir | |
| 35 | try: os.mkdir(homeDir) | |
| 36 | except os.error: pass | |
| 37 | self.env = db.DBEnv() | |
| 38 | self.env.open(homeDir, db.DB_THREAD | db.DB_INIT_MPOOL | | |
| 39 | db.DB_INIT_LOCK | db.DB_CREATE) | |
| 40 | ||
| 41 | ||
| 42 | def tearDown(self): | |
| 43 | self.env.close() | |
| 44 | import glob | |
| 45 | files = glob.glob(os.path.join(self.homeDir, '*')) | |
| 46 | for file in files: | |
| 47 | os.remove(file) | |
| 48 | ||
| 49 | ||
| 50 | def test01_simple(self): | |
| 51 | if verbose: | |
| 52 | print '\n', '-=' * 30 | |
| 53 | print "Running %s.test01_simple..." % self.__class__.__name__ | |
| 54 | ||
| 55 | anID = self.env.lock_id() | |
| 56 | if verbose: | |
| 57 | print "locker ID: %s" % anID | |
| 58 | lock = self.env.lock_get(anID, "some locked thing", db.DB_LOCK_WRITE) | |
| 59 | if verbose: | |
| 60 | print "Aquired lock: %s" % lock | |
| 61 | time.sleep(1) | |
| 62 | self.env.lock_put(lock) | |
| 63 | if verbose: | |
| 64 | print "Released lock: %s" % lock | |
| 65 | ||
| 66 | ||
| 67 | ||
| 68 | ||
| 69 | def test02_threaded(self): | |
| 70 | if verbose: | |
| 71 | print '\n', '-=' * 30 | |
| 72 | print "Running %s.test02_threaded..." % self.__class__.__name__ | |
| 73 | ||
| 74 | threads = [] | |
| 75 | threads.append(Thread(target = self.theThread, | |
| 76 | args=(5, db.DB_LOCK_WRITE))) | |
| 77 | threads.append(Thread(target = self.theThread, | |
| 78 | args=(1, db.DB_LOCK_READ))) | |
| 79 | threads.append(Thread(target = self.theThread, | |
| 80 | args=(1, db.DB_LOCK_READ))) | |
| 81 | threads.append(Thread(target = self.theThread, | |
| 82 | args=(1, db.DB_LOCK_WRITE))) | |
| 83 | threads.append(Thread(target = self.theThread, | |
| 84 | args=(1, db.DB_LOCK_READ))) | |
| 85 | threads.append(Thread(target = self.theThread, | |
| 86 | args=(1, db.DB_LOCK_READ))) | |
| 87 | threads.append(Thread(target = self.theThread, | |
| 88 | args=(1, db.DB_LOCK_WRITE))) | |
| 89 | threads.append(Thread(target = self.theThread, | |
| 90 | args=(1, db.DB_LOCK_WRITE))) | |
| 91 | threads.append(Thread(target = self.theThread, | |
| 92 | args=(1, db.DB_LOCK_WRITE))) | |
| 93 | ||
| 94 | for t in threads: | |
| 95 | t.start() | |
| 96 | for t in threads: | |
| 97 | t.join() | |
| 98 | ||
| 99 | def test03_set_timeout(self): | |
| 100 | # test that the set_timeout call works | |
| 101 | if hasattr(self.env, 'set_timeout'): | |
| 102 | self.env.set_timeout(0, db.DB_SET_LOCK_TIMEOUT) | |
| 103 | self.env.set_timeout(0, db.DB_SET_TXN_TIMEOUT) | |
| 104 | self.env.set_timeout(123456, db.DB_SET_LOCK_TIMEOUT) | |
| 105 | self.env.set_timeout(7890123, db.DB_SET_TXN_TIMEOUT) | |
| 106 | ||
| 107 | def theThread(self, sleepTime, lockType): | |
| 108 | name = currentThread().getName() | |
| 109 | if lockType == db.DB_LOCK_WRITE: | |
| 110 | lt = "write" | |
| 111 | else: | |
| 112 | lt = "read" | |
| 113 | ||
| 114 | anID = self.env.lock_id() | |
| 115 | if verbose: | |
| 116 | print "%s: locker ID: %s" % (name, anID) | |
| 117 | ||
| 118 | lock = self.env.lock_get(anID, "some locked thing", lockType) | |
| 119 | if verbose: | |
| 120 | print "%s: Aquired %s lock: %s" % (name, lt, lock) | |
| 121 | ||
| 122 | time.sleep(sleepTime) | |
| 123 | ||
| 124 | self.env.lock_put(lock) | |
| 125 | if verbose: | |
| 126 | print "%s: Released %s lock: %s" % (name, lt, lock) | |
| 127 | ||
| 128 | ||
| 129 | #---------------------------------------------------------------------- | |
| 130 | ||
| 131 | def test_suite(): | |
| 132 | suite = unittest.TestSuite() | |
| 133 | ||
| 134 | if have_threads: | |
| 135 | suite.addTest(unittest.makeSuite(LockingTestCase)) | |
| 136 | else: | |
| 137 | suite.addTest(unittest.makeSuite(LockingTestCase, 'test01')) | |
| 138 | ||
| 139 | return suite | |
| 140 | ||
| 141 | ||
| 142 | if __name__ == '__main__': | |
| 143 | unittest.main(defaultTest='test_suite') |