1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
"""TestCases for checking that it does not segfault when a DBEnv object
is closed before its DB objects.
"""
import os
import unittest
from test_all import db, test_support, verbose, get_new_environment_path, get_new_database_path
# We're going to get warnings in this module about trying to close the db when
# its env is already closed. Let's just ignore those.
try:
import warnings
except ImportError:
pass
else:
warnings.filterwarnings('ignore',
message='DB could not be closed in',
category=RuntimeWarning)
#----------------------------------------------------------------------
class DBEnvClosedEarlyCrash(unittest.TestCase):
def setUp(self):
self.homeDir = get_new_environment_path()
self.filename = "test"
def tearDown(self):
test_support.rmtree(self.homeDir)
def test01_close_dbenv_before_db(self):
dbenv = db.DBEnv()
dbenv.open(self.homeDir,
db.DB_INIT_CDB| db.DB_CREATE |db.DB_THREAD|db.DB_INIT_MPOOL,
0666)
d = db.DB(dbenv)
d2 = db.DB(dbenv)
d.open(self.filename, db.DB_BTREE, db.DB_CREATE | db.DB_THREAD, 0666)
self.assertRaises(db.DBNoSuchFileError, d2.open,
self.filename+"2", db.DB_BTREE, db.DB_THREAD, 0666)
d.put("test","this is a test")
self.assertEqual(d.get("test"), "this is a test", "put!=get")
dbenv.close() # This "close" should close the child db handle also
self.assertRaises(db.DBError, d.get, "test")
def test02_close_dbenv_before_dbcursor(self):
dbenv = db.DBEnv()
dbenv.open(self.homeDir,
db.DB_INIT_CDB| db.DB_CREATE |db.DB_THREAD|db.DB_INIT_MPOOL,
0666)
d = db.DB(dbenv)
d.open(self.filename, db.DB_BTREE, db.DB_CREATE | db.DB_THREAD, 0666)
d.put("test","this is a test")
d.put("test2","another test")
d.put("test3","another one")
self.assertEqual(d.get("test"), "this is a test", "put!=get")
c=d.cursor()
c.first()
c.next()
d.close() # This "close" should close the child db handle also
# db.close should close the child cursor
self.assertRaises(db.DBError,c.next)
d = db.DB(dbenv)
d.open(self.filename, db.DB_BTREE, db.DB_CREATE | db.DB_THREAD, 0666)
c=d.cursor()
c.first()
c.next()
dbenv.close()
# The "close" should close the child db handle also, with cursors
self.assertRaises(db.DBError, c.next)
def test03_close_db_before_dbcursor_without_env(self):
import os.path
path=os.path.join(self.homeDir,self.filename)
d = db.DB()
d.open(path, db.DB_BTREE, db.DB_CREATE | db.DB_THREAD, 0666)
d.put("test","this is a test")
d.put("test2","another test")
d.put("test3","another one")
self.assertEqual(d.get("test"), "this is a test", "put!=get")
c=d.cursor()
c.first()
c.next()
d.close()
# The "close" should close the child db handle also
self.assertRaises(db.DBError, c.next)
def test04_close_massive(self):
dbenv = db.DBEnv()
dbenv.open(self.homeDir,
db.DB_INIT_CDB| db.DB_CREATE |db.DB_THREAD|db.DB_INIT_MPOOL,
0666)
dbs=[db.DB(dbenv) for i in xrange(16)]
cursors=[]
for i in dbs :
i.open(self.filename, db.DB_BTREE, db.DB_CREATE | db.DB_THREAD, 0666)
dbs[10].put("test","this is a test")
dbs[10].put("test2","another test")
dbs[10].put("test3","another one")
self.assertEqual(dbs[4].get("test"), "this is a test", "put!=get")
for i in dbs :
cursors.extend([i.cursor() for j in xrange(32)])
for i in dbs[::3] :
i.close()
for i in cursors[::3] :
i.close()
# Check for missing exception in DB! (after DB close)
self.assertRaises(db.DBError, dbs[9].get, "test")
# Check for missing exception in DBCursor! (after DB close)
self.assertRaises(db.DBError, cursors[101].first)
cursors[80].first()
cursors[80].next()
dbenv.close() # This "close" should close the child db handle also
# Check for missing exception! (after DBEnv close)
self.assertRaises(db.DBError, cursors[80].next)
def test05_close_dbenv_delete_db_success(self):
dbenv = db.DBEnv()
dbenv.open(self.homeDir,
db.DB_INIT_CDB| db.DB_CREATE |db.DB_THREAD|db.DB_INIT_MPOOL,
0666)
d = db.DB(dbenv)
d.open(self.filename, db.DB_BTREE, db.DB_CREATE | db.DB_THREAD, 0666)
dbenv.close() # This "close" should close the child db handle also
del d
try:
import gc
except ImportError:
gc = None
if gc:
# force d.__del__ [DB_dealloc] to be called
gc.collect()
def test06_close_txn_before_dup_cursor(self) :
dbenv = db.DBEnv()
dbenv.open(self.homeDir,db.DB_INIT_TXN | db.DB_INIT_MPOOL |
db.DB_INIT_LOG | db.DB_CREATE)
d = db.DB(dbenv)
txn = dbenv.txn_begin()
if db.version() < (4,1) :
d.open(self.filename, dbtype = db.DB_HASH, flags = db.DB_CREATE)
else :
d.open(self.filename, dbtype = db.DB_HASH, flags = db.DB_CREATE,
txn=txn)
d.put("XXX", "yyy", txn=txn)
txn.commit()
txn = dbenv.txn_begin()
c1 = d.cursor(txn)
c2 = c1.dup()
self.assertEquals(("XXX", "yyy"), c1.first())
import warnings
# Not interested in warnings about implicit close.
warnings.simplefilter("ignore")
txn.commit()
warnings.resetwarnings()
self.assertRaises(db.DBCursorClosedError, c2.first)
if db.version() > (4,3,0) :
def test07_close_db_before_sequence(self):
import os.path
path=os.path.join(self.homeDir,self.filename)
d = db.DB()
d.open(path, db.DB_BTREE, db.DB_CREATE | db.DB_THREAD, 0666)
dbs=db.DBSequence(d)
d.close() # This "close" should close the child DBSequence also
dbs.close() # If not closed, core dump (in Berkeley DB 4.6.*)
#----------------------------------------------------------------------
def test_suite():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(DBEnvClosedEarlyCrash))
return suite
if __name__ == '__main__':
unittest.main(defaultTest='test_suite')
|
