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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
|
# Copyright (c) 2001-2006 Twisted Matrix Laboratories.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
"""
Tests for epoll wrapper.
"""
import errno
import os
import select
import socket
import time
import unittest
from test import support
if not hasattr(select, "epoll"):
raise unittest.SkipTest("test works only on Linux 2.6")
try:
select.epoll()
except OSError as e:
if e.errno == errno.ENOSYS:
raise unittest.SkipTest("kernel doesn't support epoll()")
raise
class TestEPoll(unittest.TestCase):
def setUp(self):
self.serverSocket = socket.socket()
self.serverSocket.bind(('127.0.0.1', 0))
self.serverSocket.listen()
self.connections = [self.serverSocket]
def tearDown(self):
for skt in self.connections:
skt.close()
def _connected_pair(self):
client = socket.socket()
client.setblocking(False)
try:
client.connect(('127.0.0.1', self.serverSocket.getsockname()[1]))
except OSError as e:
self.assertEqual(e.args[0], errno.EINPROGRESS)
else:
raise AssertionError("Connect should have raised EINPROGRESS")
server, addr = self.serverSocket.accept()
self.connections.extend((client, server))
return client, server
def test_create(self):
try:
ep = select.epoll(16)
except OSError as e:
raise AssertionError(str(e))
self.assertTrue(ep.fileno() > 0, ep.fileno())
self.assertTrue(not ep.closed)
ep.close()
self.assertTrue(ep.closed)
self.assertRaises(ValueError, ep.fileno)
if hasattr(select, "EPOLL_CLOEXEC"):
select.epoll(select.EPOLL_CLOEXEC).close()
self.assertRaises(OSError, select.epoll, flags=12356)
def test_badcreate(self):
self.assertRaises(TypeError, select.epoll, 1, 2, 3)
self.assertRaises(TypeError, select.epoll, 'foo')
self.assertRaises(TypeError, select.epoll, None)
self.assertRaises(TypeError, select.epoll, ())
self.assertRaises(TypeError, select.epoll, ['foo'])
self.assertRaises(TypeError, select.epoll, {})
def test_context_manager(self):
with select.epoll(16) as ep:
self.assertGreater(ep.fileno(), 0)
self.assertFalse(ep.closed)
self.assertTrue(ep.closed)
self.assertRaises(ValueError, ep.fileno)
def test_add(self):
server, client = self._connected_pair()
ep = select.epoll(2)
try:
ep.register(server.fileno(), select.EPOLLIN | select.EPOLLOUT)
ep.register(client.fileno(), select.EPOLLIN | select.EPOLLOUT)
finally:
ep.close()
# adding by object w/ fileno works, too.
ep = select.epoll(2)
try:
ep.register(server, select.EPOLLIN | select.EPOLLOUT)
ep.register(client, select.EPOLLIN | select.EPOLLOUT)
finally:
ep.close()
ep = select.epoll(2)
try:
# TypeError: argument must be an int, or have a fileno() method.
self.assertRaises(TypeError, ep.register, object(),
select.EPOLLIN | select.EPOLLOUT)
self.assertRaises(TypeError, ep.register, None,
select.EPOLLIN | select.EPOLLOUT)
# ValueError: file descriptor cannot be a negative integer (-1)
self.assertRaises(ValueError, ep.register, -1,
select.EPOLLIN | select.EPOLLOUT)
# OSError: [Errno 9] Bad file descriptor
self.assertRaises(OSError, ep.register, 10000,
select.EPOLLIN | select.EPOLLOUT)
# registering twice also raises an exception
ep.register(server, select.EPOLLIN | select.EPOLLOUT)
self.assertRaises(OSError, ep.register, server,
select.EPOLLIN | select.EPOLLOUT)
finally:
ep.close()
def test_fromfd(self):
server, client = self._connected_pair()
ep = select.epoll(2)
ep2 = select.epoll.fromfd(ep.fileno())
ep2.register(server.fileno(), select.EPOLLIN | select.EPOLLOUT)
ep2.register(client.fileno(), select.EPOLLIN | select.EPOLLOUT)
events = ep.poll(1, 4)
events2 = ep2.poll(0.9, 4)
self.assertEqual(len(events), 2)
self.assertEqual(len(events2), 2)
ep.close()
try:
ep2.poll(1, 4)
except OSError as e:
self.assertEqual(e.args[0], errno.EBADF, e)
else:
self.fail("epoll on closed fd didn't raise EBADF")
def test_control_and_wait(self):
client, server = self._connected_pair()
ep = select.epoll(16)
ep.register(server.fileno(),
select.EPOLLIN | select.EPOLLOUT | select.EPOLLET)
ep.register(client.fileno(),
select.EPOLLIN | select.EPOLLOUT | select.EPOLLET)
now = time.monotonic()
events = ep.poll(1, 4)
then = time.monotonic()
self.assertFalse(then - now > 0.1, then - now)
events.sort()
expected = [(client.fileno(), select.EPOLLOUT),
(server.fileno(), select.EPOLLOUT)]
expected.sort()
self.assertEqual(events, expected)
events = ep.poll(timeout=2.1, maxevents=4)
self.assertFalse(events)
client.send(b"Hello!")
server.send(b"world!!!")
now = time.monotonic()
events = ep.poll(1, 4)
then = time.monotonic()
self.assertFalse(then - now > 0.01)
events.sort()
expected = [(client.fileno(), select.EPOLLIN | select.EPOLLOUT),
(server.fileno(), select.EPOLLIN | select.EPOLLOUT)]
expected.sort()
self.assertEqual(events, expected)
ep.unregister(client.fileno())
ep.modify(server.fileno(), select.EPOLLOUT)
now = time.monotonic()
events = ep.poll(1, 4)
then = time.monotonic()
self.assertFalse(then - now > 0.01)
expected = [(server.fileno(), select.EPOLLOUT)]
self.assertEqual(events, expected)
def test_errors(self):
self.assertRaises(ValueError, select.epoll, -2)
self.assertRaises(ValueError, select.epoll().register, -1,
select.EPOLLIN)
def test_unregister_closed(self):
server, client = self._connected_pair()
fd = server.fileno()
ep = select.epoll(16)
ep.register(server)
now = time.monotonic()
events = ep.poll(1, 4)
then = time.monotonic()
self.assertFalse(then - now > 0.01)
server.close()
ep.unregister(fd)
def test_close(self):
open_file = open(__file__, "rb")
self.addCleanup(open_file.close)
fd = open_file.fileno()
epoll = select.epoll()
# test fileno() method and closed attribute
self.assertIsInstance(epoll.fileno(), int)
self.assertFalse(epoll.closed)
# test close()
epoll.close()
self.assertTrue(epoll.closed)
self.assertRaises(ValueError, epoll.fileno)
# close() can be called more than once
epoll.close()
# operations must fail with ValueError("I/O operation on closed ...")
self.assertRaises(ValueError, epoll.modify, fd, select.EPOLLIN)
self.assertRaises(ValueError, epoll.poll, 1.0)
self.assertRaises(ValueError, epoll.register, fd, select.EPOLLIN)
self.assertRaises(ValueError, epoll.unregister, fd)
def test_fd_non_inheritable(self):
epoll = select.epoll()
self.addCleanup(epoll.close)
self.assertEqual(os.get_inheritable(epoll.fileno()), False)
if __name__ == "__main__":
unittest.main()
|
