Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 1 | import errno |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 2 | import os |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 3 | import random |
| 4 | import selectors |
| 5 | import signal |
| 6 | import socket |
Victor Stinner | fc6fdb1 | 2014-12-17 01:07:56 +0100 | [diff] [blame] | 7 | import sys |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 8 | from test import support |
Victor Stinner | 6b0fa70 | 2014-01-25 15:04:22 +0100 | [diff] [blame] | 9 | from time import sleep |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 10 | import unittest |
Guido van Rossum | d0786a1 | 2013-11-07 08:39:28 -0800 | [diff] [blame] | 11 | import unittest.mock |
Yury Selivanov | 525aedc | 2016-09-15 19:30:42 -0400 | [diff] [blame] | 12 | import tempfile |
Victor Stinner | ae58649 | 2014-09-02 23:18:25 +0200 | [diff] [blame] | 13 | from time import monotonic as time |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 14 | try: |
| 15 | import resource |
| 16 | except ImportError: |
| 17 | resource = None |
| 18 | |
| 19 | |
| 20 | if hasattr(socket, 'socketpair'): |
| 21 | socketpair = socket.socketpair |
| 22 | else: |
| 23 | def socketpair(family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0): |
| 24 | with socket.socket(family, type, proto) as l: |
| 25 | l.bind((support.HOST, 0)) |
Charles-François Natali | 6e20460 | 2014-07-23 19:28:13 +0100 | [diff] [blame] | 26 | l.listen() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 27 | c = socket.socket(family, type, proto) |
| 28 | try: |
| 29 | c.connect(l.getsockname()) |
| 30 | caddr = c.getsockname() |
| 31 | while True: |
| 32 | a, addr = l.accept() |
| 33 | # check that we've got the correct client |
| 34 | if addr == caddr: |
| 35 | return c, a |
| 36 | a.close() |
| 37 | except OSError: |
| 38 | c.close() |
| 39 | raise |
| 40 | |
| 41 | |
| 42 | def find_ready_matching(ready, flag): |
| 43 | match = [] |
| 44 | for key, events in ready: |
| 45 | if events & flag: |
| 46 | match.append(key.fileobj) |
| 47 | return match |
| 48 | |
| 49 | |
| 50 | class BaseSelectorTestCase(unittest.TestCase): |
| 51 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 52 | def make_socketpair(self): |
| 53 | rd, wr = socketpair() |
| 54 | self.addCleanup(rd.close) |
| 55 | self.addCleanup(wr.close) |
| 56 | return rd, wr |
| 57 | |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 58 | def test_register(self): |
| 59 | s = self.SELECTOR() |
| 60 | self.addCleanup(s.close) |
| 61 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 62 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 63 | |
| 64 | key = s.register(rd, selectors.EVENT_READ, "data") |
| 65 | self.assertIsInstance(key, selectors.SelectorKey) |
| 66 | self.assertEqual(key.fileobj, rd) |
| 67 | self.assertEqual(key.fd, rd.fileno()) |
| 68 | self.assertEqual(key.events, selectors.EVENT_READ) |
| 69 | self.assertEqual(key.data, "data") |
| 70 | |
| 71 | # register an unknown event |
| 72 | self.assertRaises(ValueError, s.register, 0, 999999) |
| 73 | |
| 74 | # register an invalid FD |
| 75 | self.assertRaises(ValueError, s.register, -10, selectors.EVENT_READ) |
| 76 | |
| 77 | # register twice |
| 78 | self.assertRaises(KeyError, s.register, rd, selectors.EVENT_READ) |
| 79 | |
| 80 | # register the same FD, but with a different object |
| 81 | self.assertRaises(KeyError, s.register, rd.fileno(), |
| 82 | selectors.EVENT_READ) |
| 83 | |
| 84 | def test_unregister(self): |
| 85 | s = self.SELECTOR() |
| 86 | self.addCleanup(s.close) |
| 87 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 88 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 89 | |
| 90 | s.register(rd, selectors.EVENT_READ) |
| 91 | s.unregister(rd) |
| 92 | |
| 93 | # unregister an unknown file obj |
| 94 | self.assertRaises(KeyError, s.unregister, 999999) |
| 95 | |
| 96 | # unregister twice |
| 97 | self.assertRaises(KeyError, s.unregister, rd) |
| 98 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 99 | def test_unregister_after_fd_close(self): |
| 100 | s = self.SELECTOR() |
| 101 | self.addCleanup(s.close) |
| 102 | rd, wr = self.make_socketpair() |
| 103 | r, w = rd.fileno(), wr.fileno() |
| 104 | s.register(r, selectors.EVENT_READ) |
| 105 | s.register(w, selectors.EVENT_WRITE) |
| 106 | rd.close() |
| 107 | wr.close() |
| 108 | s.unregister(r) |
| 109 | s.unregister(w) |
| 110 | |
Victor Stinner | 383bff4 | 2013-12-09 01:59:07 +0100 | [diff] [blame] | 111 | @unittest.skipUnless(os.name == 'posix', "requires posix") |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 112 | def test_unregister_after_fd_close_and_reuse(self): |
| 113 | s = self.SELECTOR() |
| 114 | self.addCleanup(s.close) |
| 115 | rd, wr = self.make_socketpair() |
| 116 | r, w = rd.fileno(), wr.fileno() |
| 117 | s.register(r, selectors.EVENT_READ) |
| 118 | s.register(w, selectors.EVENT_WRITE) |
| 119 | rd2, wr2 = self.make_socketpair() |
| 120 | rd.close() |
| 121 | wr.close() |
| 122 | os.dup2(rd2.fileno(), r) |
| 123 | os.dup2(wr2.fileno(), w) |
| 124 | self.addCleanup(os.close, r) |
| 125 | self.addCleanup(os.close, w) |
| 126 | s.unregister(r) |
| 127 | s.unregister(w) |
| 128 | |
| 129 | def test_unregister_after_socket_close(self): |
| 130 | s = self.SELECTOR() |
| 131 | self.addCleanup(s.close) |
| 132 | rd, wr = self.make_socketpair() |
| 133 | s.register(rd, selectors.EVENT_READ) |
| 134 | s.register(wr, selectors.EVENT_WRITE) |
| 135 | rd.close() |
| 136 | wr.close() |
| 137 | s.unregister(rd) |
| 138 | s.unregister(wr) |
| 139 | |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 140 | def test_modify(self): |
| 141 | s = self.SELECTOR() |
| 142 | self.addCleanup(s.close) |
| 143 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 144 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 145 | |
| 146 | key = s.register(rd, selectors.EVENT_READ) |
| 147 | |
| 148 | # modify events |
| 149 | key2 = s.modify(rd, selectors.EVENT_WRITE) |
| 150 | self.assertNotEqual(key.events, key2.events) |
| 151 | self.assertEqual(key2, s.get_key(rd)) |
| 152 | |
| 153 | s.unregister(rd) |
| 154 | |
| 155 | # modify data |
| 156 | d1 = object() |
| 157 | d2 = object() |
| 158 | |
| 159 | key = s.register(rd, selectors.EVENT_READ, d1) |
| 160 | key2 = s.modify(rd, selectors.EVENT_READ, d2) |
| 161 | self.assertEqual(key.events, key2.events) |
| 162 | self.assertNotEqual(key.data, key2.data) |
| 163 | self.assertEqual(key2, s.get_key(rd)) |
| 164 | self.assertEqual(key2.data, d2) |
| 165 | |
| 166 | # modify unknown file obj |
| 167 | self.assertRaises(KeyError, s.modify, 999999, selectors.EVENT_READ) |
| 168 | |
Guido van Rossum | d0786a1 | 2013-11-07 08:39:28 -0800 | [diff] [blame] | 169 | # modify use a shortcut |
| 170 | d3 = object() |
| 171 | s.register = unittest.mock.Mock() |
| 172 | s.unregister = unittest.mock.Mock() |
| 173 | |
| 174 | s.modify(rd, selectors.EVENT_READ, d3) |
| 175 | self.assertFalse(s.register.called) |
| 176 | self.assertFalse(s.unregister.called) |
| 177 | |
Giampaolo Rodola | fbfaa6f | 2017-06-09 22:20:41 +0200 | [diff] [blame] | 178 | def test_modify_unregister(self): |
| 179 | # Make sure the fd is unregister()ed in case of error on |
| 180 | # modify(): http://bugs.python.org/issue30014 |
| 181 | if self.SELECTOR.__name__ == 'EpollSelector': |
| 182 | patch = unittest.mock.patch( |
| 183 | 'selectors.EpollSelector._selector_cls') |
| 184 | elif self.SELECTOR.__name__ == 'PollSelector': |
| 185 | patch = unittest.mock.patch( |
| 186 | 'selectors.PollSelector._selector_cls') |
| 187 | elif self.SELECTOR.__name__ == 'DevpollSelector': |
| 188 | patch = unittest.mock.patch( |
| 189 | 'selectors.DevpollSelector._selector_cls') |
| 190 | else: |
| 191 | raise self.skipTest("") |
| 192 | |
| 193 | with patch as m: |
| 194 | m.return_value.modify = unittest.mock.Mock( |
| 195 | side_effect=ZeroDivisionError) |
| 196 | s = self.SELECTOR() |
| 197 | self.addCleanup(s.close) |
| 198 | rd, wr = self.make_socketpair() |
| 199 | s.register(rd, selectors.EVENT_READ) |
| 200 | self.assertEqual(len(s._map), 1) |
| 201 | with self.assertRaises(ZeroDivisionError): |
| 202 | s.modify(rd, selectors.EVENT_WRITE) |
| 203 | self.assertEqual(len(s._map), 0) |
| 204 | |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 205 | def test_close(self): |
| 206 | s = self.SELECTOR() |
| 207 | self.addCleanup(s.close) |
| 208 | |
Victor Stinner | 38dc250 | 2015-01-13 09:58:33 +0100 | [diff] [blame] | 209 | mapping = s.get_map() |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 210 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 211 | |
| 212 | s.register(rd, selectors.EVENT_READ) |
| 213 | s.register(wr, selectors.EVENT_WRITE) |
| 214 | |
| 215 | s.close() |
Victor Stinner | 458fc6f | 2015-01-13 10:00:55 +0100 | [diff] [blame] | 216 | self.assertRaises(RuntimeError, s.get_key, rd) |
| 217 | self.assertRaises(RuntimeError, s.get_key, wr) |
Victor Stinner | 38dc250 | 2015-01-13 09:58:33 +0100 | [diff] [blame] | 218 | self.assertRaises(KeyError, mapping.__getitem__, rd) |
| 219 | self.assertRaises(KeyError, mapping.__getitem__, wr) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 220 | |
| 221 | def test_get_key(self): |
| 222 | s = self.SELECTOR() |
| 223 | self.addCleanup(s.close) |
| 224 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 225 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 226 | |
| 227 | key = s.register(rd, selectors.EVENT_READ, "data") |
| 228 | self.assertEqual(key, s.get_key(rd)) |
| 229 | |
| 230 | # unknown file obj |
| 231 | self.assertRaises(KeyError, s.get_key, 999999) |
| 232 | |
Charles-François Natali | 4574b49 | 2013-10-30 20:31:04 +0100 | [diff] [blame] | 233 | def test_get_map(self): |
| 234 | s = self.SELECTOR() |
| 235 | self.addCleanup(s.close) |
| 236 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 237 | rd, wr = self.make_socketpair() |
Charles-François Natali | 4574b49 | 2013-10-30 20:31:04 +0100 | [diff] [blame] | 238 | |
| 239 | keys = s.get_map() |
| 240 | self.assertFalse(keys) |
| 241 | self.assertEqual(len(keys), 0) |
| 242 | self.assertEqual(list(keys), []) |
| 243 | key = s.register(rd, selectors.EVENT_READ, "data") |
| 244 | self.assertIn(rd, keys) |
| 245 | self.assertEqual(key, keys[rd]) |
| 246 | self.assertEqual(len(keys), 1) |
| 247 | self.assertEqual(list(keys), [rd.fileno()]) |
| 248 | self.assertEqual(list(keys.values()), [key]) |
| 249 | |
| 250 | # unknown file obj |
| 251 | with self.assertRaises(KeyError): |
| 252 | keys[999999] |
| 253 | |
| 254 | # Read-only mapping |
| 255 | with self.assertRaises(TypeError): |
| 256 | del keys[rd] |
| 257 | |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 258 | def test_select(self): |
| 259 | s = self.SELECTOR() |
| 260 | self.addCleanup(s.close) |
| 261 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 262 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 263 | |
| 264 | s.register(rd, selectors.EVENT_READ) |
| 265 | wr_key = s.register(wr, selectors.EVENT_WRITE) |
| 266 | |
| 267 | result = s.select() |
| 268 | for key, events in result: |
| 269 | self.assertTrue(isinstance(key, selectors.SelectorKey)) |
| 270 | self.assertTrue(events) |
| 271 | self.assertFalse(events & ~(selectors.EVENT_READ | |
| 272 | selectors.EVENT_WRITE)) |
| 273 | |
| 274 | self.assertEqual([(wr_key, selectors.EVENT_WRITE)], result) |
| 275 | |
| 276 | def test_context_manager(self): |
| 277 | s = self.SELECTOR() |
| 278 | self.addCleanup(s.close) |
| 279 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 280 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 281 | |
| 282 | with s as sel: |
| 283 | sel.register(rd, selectors.EVENT_READ) |
| 284 | sel.register(wr, selectors.EVENT_WRITE) |
| 285 | |
Victor Stinner | 458fc6f | 2015-01-13 10:00:55 +0100 | [diff] [blame] | 286 | self.assertRaises(RuntimeError, s.get_key, rd) |
| 287 | self.assertRaises(RuntimeError, s.get_key, wr) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 288 | |
| 289 | def test_fileno(self): |
| 290 | s = self.SELECTOR() |
| 291 | self.addCleanup(s.close) |
| 292 | |
| 293 | if hasattr(s, 'fileno'): |
| 294 | fd = s.fileno() |
| 295 | self.assertTrue(isinstance(fd, int)) |
| 296 | self.assertGreaterEqual(fd, 0) |
| 297 | |
| 298 | def test_selector(self): |
| 299 | s = self.SELECTOR() |
| 300 | self.addCleanup(s.close) |
| 301 | |
| 302 | NUM_SOCKETS = 12 |
| 303 | MSG = b" This is a test." |
| 304 | MSG_LEN = len(MSG) |
| 305 | readers = [] |
| 306 | writers = [] |
| 307 | r2w = {} |
| 308 | w2r = {} |
| 309 | |
| 310 | for i in range(NUM_SOCKETS): |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 311 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 312 | s.register(rd, selectors.EVENT_READ) |
| 313 | s.register(wr, selectors.EVENT_WRITE) |
| 314 | readers.append(rd) |
| 315 | writers.append(wr) |
| 316 | r2w[rd] = wr |
| 317 | w2r[wr] = rd |
| 318 | |
| 319 | bufs = [] |
| 320 | |
| 321 | while writers: |
| 322 | ready = s.select() |
| 323 | ready_writers = find_ready_matching(ready, selectors.EVENT_WRITE) |
| 324 | if not ready_writers: |
| 325 | self.fail("no sockets ready for writing") |
| 326 | wr = random.choice(ready_writers) |
| 327 | wr.send(MSG) |
| 328 | |
| 329 | for i in range(10): |
| 330 | ready = s.select() |
| 331 | ready_readers = find_ready_matching(ready, |
| 332 | selectors.EVENT_READ) |
| 333 | if ready_readers: |
| 334 | break |
| 335 | # there might be a delay between the write to the write end and |
| 336 | # the read end is reported ready |
| 337 | sleep(0.1) |
| 338 | else: |
| 339 | self.fail("no sockets ready for reading") |
| 340 | self.assertEqual([w2r[wr]], ready_readers) |
| 341 | rd = ready_readers[0] |
| 342 | buf = rd.recv(MSG_LEN) |
| 343 | self.assertEqual(len(buf), MSG_LEN) |
| 344 | bufs.append(buf) |
| 345 | s.unregister(r2w[rd]) |
| 346 | s.unregister(rd) |
| 347 | writers.remove(r2w[rd]) |
| 348 | |
| 349 | self.assertEqual(bufs, [MSG] * NUM_SOCKETS) |
| 350 | |
Victor Stinner | fc6fdb1 | 2014-12-17 01:07:56 +0100 | [diff] [blame] | 351 | @unittest.skipIf(sys.platform == 'win32', |
| 352 | 'select.select() cannot be used with empty fd sets') |
Yury Selivanov | d60ef4a | 2014-12-08 12:21:58 -0500 | [diff] [blame] | 353 | def test_empty_select(self): |
Victor Stinner | 14d45c0 | 2015-01-22 09:07:36 +0100 | [diff] [blame] | 354 | # Issue #23009: Make sure EpollSelector.select() works when no FD is |
| 355 | # registered. |
Yury Selivanov | d60ef4a | 2014-12-08 12:21:58 -0500 | [diff] [blame] | 356 | s = self.SELECTOR() |
| 357 | self.addCleanup(s.close) |
| 358 | self.assertEqual(s.select(timeout=0), []) |
| 359 | |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 360 | def test_timeout(self): |
| 361 | s = self.SELECTOR() |
| 362 | self.addCleanup(s.close) |
| 363 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 364 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 365 | |
| 366 | s.register(wr, selectors.EVENT_WRITE) |
| 367 | t = time() |
| 368 | self.assertEqual(1, len(s.select(0))) |
| 369 | self.assertEqual(1, len(s.select(-1))) |
Charles-François Natali | c60dd5b | 2013-10-25 17:56:00 +0200 | [diff] [blame] | 370 | self.assertLess(time() - t, 0.5) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 371 | |
| 372 | s.unregister(wr) |
| 373 | s.register(rd, selectors.EVENT_READ) |
| 374 | t = time() |
| 375 | self.assertFalse(s.select(0)) |
| 376 | self.assertFalse(s.select(-1)) |
Charles-François Natali | c60dd5b | 2013-10-25 17:56:00 +0200 | [diff] [blame] | 377 | self.assertLess(time() - t, 0.5) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 378 | |
Charles-François Natali | c60dd5b | 2013-10-25 17:56:00 +0200 | [diff] [blame] | 379 | t0 = time() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 380 | self.assertFalse(s.select(1)) |
Charles-François Natali | c60dd5b | 2013-10-25 17:56:00 +0200 | [diff] [blame] | 381 | t1 = time() |
Victor Stinner | 1a048f9 | 2013-11-17 23:46:34 +0100 | [diff] [blame] | 382 | dt = t1 - t0 |
Victor Stinner | 437ffbd | 2014-12-12 12:57:35 +0100 | [diff] [blame] | 383 | # Tolerate 2.0 seconds for very slow buildbots |
| 384 | self.assertTrue(0.8 <= dt <= 2.0, dt) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 385 | |
| 386 | @unittest.skipUnless(hasattr(signal, "alarm"), |
| 387 | "signal.alarm() required for this test") |
Victor Stinner | b310173 | 2015-03-31 12:08:09 +0200 | [diff] [blame] | 388 | def test_select_interrupt_exc(self): |
| 389 | s = self.SELECTOR() |
| 390 | self.addCleanup(s.close) |
| 391 | |
| 392 | rd, wr = self.make_socketpair() |
| 393 | |
| 394 | class InterruptSelect(Exception): |
| 395 | pass |
| 396 | |
| 397 | def handler(*args): |
| 398 | raise InterruptSelect |
| 399 | |
| 400 | orig_alrm_handler = signal.signal(signal.SIGALRM, handler) |
| 401 | self.addCleanup(signal.signal, signal.SIGALRM, orig_alrm_handler) |
Victor Stinner | b310173 | 2015-03-31 12:08:09 +0200 | [diff] [blame] | 402 | |
Victor Stinner | 9abee72 | 2017-09-19 09:36:54 -0700 | [diff] [blame] | 403 | try: |
| 404 | signal.alarm(1) |
Victor Stinner | b310173 | 2015-03-31 12:08:09 +0200 | [diff] [blame] | 405 | |
Victor Stinner | 9abee72 | 2017-09-19 09:36:54 -0700 | [diff] [blame] | 406 | s.register(rd, selectors.EVENT_READ) |
| 407 | t = time() |
| 408 | # select() is interrupted by a signal which raises an exception |
| 409 | with self.assertRaises(InterruptSelect): |
| 410 | s.select(30) |
| 411 | # select() was interrupted before the timeout of 30 seconds |
| 412 | self.assertLess(time() - t, 5.0) |
| 413 | finally: |
| 414 | signal.alarm(0) |
Victor Stinner | b310173 | 2015-03-31 12:08:09 +0200 | [diff] [blame] | 415 | |
| 416 | @unittest.skipUnless(hasattr(signal, "alarm"), |
| 417 | "signal.alarm() required for this test") |
| 418 | def test_select_interrupt_noraise(self): |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 419 | s = self.SELECTOR() |
| 420 | self.addCleanup(s.close) |
| 421 | |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 422 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 423 | |
| 424 | orig_alrm_handler = signal.signal(signal.SIGALRM, lambda *args: None) |
| 425 | self.addCleanup(signal.signal, signal.SIGALRM, orig_alrm_handler) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 426 | |
Victor Stinner | 9abee72 | 2017-09-19 09:36:54 -0700 | [diff] [blame] | 427 | try: |
| 428 | signal.alarm(1) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 429 | |
Victor Stinner | 9abee72 | 2017-09-19 09:36:54 -0700 | [diff] [blame] | 430 | s.register(rd, selectors.EVENT_READ) |
| 431 | t = time() |
| 432 | # select() is interrupted by a signal, but the signal handler doesn't |
| 433 | # raise an exception, so select() should by retries with a recomputed |
| 434 | # timeout |
| 435 | self.assertFalse(s.select(1.5)) |
| 436 | self.assertGreaterEqual(time() - t, 1.0) |
| 437 | finally: |
| 438 | signal.alarm(0) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 439 | |
| 440 | |
| 441 | class ScalableSelectorMixIn: |
| 442 | |
Charles-François Natali | 807ba85 | 2013-09-08 12:31:32 +0200 | [diff] [blame] | 443 | # see issue #18963 for why it's skipped on older OS X versions |
| 444 | @support.requires_mac_ver(10, 5) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 445 | @unittest.skipUnless(resource, "Test needs resource module") |
| 446 | def test_above_fd_setsize(self): |
| 447 | # A scalable implementation should have no problem with more than |
| 448 | # FD_SETSIZE file descriptors. Since we don't know the value, we just |
| 449 | # try to set the soft RLIMIT_NOFILE to the hard RLIMIT_NOFILE ceiling. |
| 450 | soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE) |
| 451 | try: |
| 452 | resource.setrlimit(resource.RLIMIT_NOFILE, (hard, hard)) |
| 453 | self.addCleanup(resource.setrlimit, resource.RLIMIT_NOFILE, |
| 454 | (soft, hard)) |
Charles-François Natali | 889d646 | 2014-07-22 21:25:03 +0100 | [diff] [blame] | 455 | NUM_FDS = min(hard, 2**16) |
Charles-François Natali | 9437d7a | 2013-09-08 11:34:42 +0200 | [diff] [blame] | 456 | except (OSError, ValueError): |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 457 | NUM_FDS = soft |
| 458 | |
| 459 | # guard for already allocated FDs (stdin, stdout...) |
| 460 | NUM_FDS -= 32 |
| 461 | |
| 462 | s = self.SELECTOR() |
| 463 | self.addCleanup(s.close) |
| 464 | |
| 465 | for i in range(NUM_FDS // 2): |
| 466 | try: |
Guido van Rossum | 9710ff0 | 2013-12-07 15:57:01 -0800 | [diff] [blame] | 467 | rd, wr = self.make_socketpair() |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 468 | except OSError: |
| 469 | # too many FDs, skip - note that we should only catch EMFILE |
| 470 | # here, but apparently *BSD and Solaris can fail upon connect() |
| 471 | # or bind() with EADDRNOTAVAIL, so let's be safe |
| 472 | self.skipTest("FD limit reached") |
| 473 | |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 474 | try: |
| 475 | s.register(rd, selectors.EVENT_READ) |
| 476 | s.register(wr, selectors.EVENT_WRITE) |
| 477 | except OSError as e: |
| 478 | if e.errno == errno.ENOSPC: |
| 479 | # this can be raised by epoll if we go over |
| 480 | # fs.epoll.max_user_watches sysctl |
| 481 | self.skipTest("FD limit reached") |
| 482 | raise |
| 483 | |
Steve Dower | e5f41d2 | 2018-05-16 17:50:29 -0400 | [diff] [blame] | 484 | try: |
| 485 | fds = s.select() |
| 486 | except OSError as e: |
| 487 | if e.errno == errno.EINVAL and sys.platform == 'darwin': |
| 488 | # unexplainable errors on macOS don't need to fail the test |
| 489 | self.skipTest("Invalid argument error calling poll()") |
| 490 | raise |
| 491 | self.assertEqual(NUM_FDS // 2, len(fds)) |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 492 | |
| 493 | |
| 494 | class DefaultSelectorTestCase(BaseSelectorTestCase): |
| 495 | |
| 496 | SELECTOR = selectors.DefaultSelector |
| 497 | |
| 498 | |
| 499 | class SelectSelectorTestCase(BaseSelectorTestCase): |
| 500 | |
| 501 | SELECTOR = selectors.SelectSelector |
| 502 | |
| 503 | |
| 504 | @unittest.skipUnless(hasattr(selectors, 'PollSelector'), |
| 505 | "Test needs selectors.PollSelector") |
| 506 | class PollSelectorTestCase(BaseSelectorTestCase, ScalableSelectorMixIn): |
| 507 | |
| 508 | SELECTOR = getattr(selectors, 'PollSelector', None) |
| 509 | |
| 510 | |
| 511 | @unittest.skipUnless(hasattr(selectors, 'EpollSelector'), |
| 512 | "Test needs selectors.EpollSelector") |
| 513 | class EpollSelectorTestCase(BaseSelectorTestCase, ScalableSelectorMixIn): |
| 514 | |
| 515 | SELECTOR = getattr(selectors, 'EpollSelector', None) |
| 516 | |
Yury Selivanov | 525aedc | 2016-09-15 19:30:42 -0400 | [diff] [blame] | 517 | def test_register_file(self): |
| 518 | # epoll(7) returns EPERM when given a file to watch |
| 519 | s = self.SELECTOR() |
| 520 | with tempfile.NamedTemporaryFile() as f: |
| 521 | with self.assertRaises(IOError): |
| 522 | s.register(f, selectors.EVENT_READ) |
| 523 | # the SelectorKey has been removed |
| 524 | with self.assertRaises(KeyError): |
| 525 | s.get_key(f) |
| 526 | |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 527 | |
| 528 | @unittest.skipUnless(hasattr(selectors, 'KqueueSelector'), |
| 529 | "Test needs selectors.KqueueSelector)") |
| 530 | class KqueueSelectorTestCase(BaseSelectorTestCase, ScalableSelectorMixIn): |
| 531 | |
| 532 | SELECTOR = getattr(selectors, 'KqueueSelector', None) |
| 533 | |
Yury Selivanov | 525aedc | 2016-09-15 19:30:42 -0400 | [diff] [blame] | 534 | def test_register_bad_fd(self): |
| 535 | # a file descriptor that's been closed should raise an OSError |
| 536 | # with EBADF |
| 537 | s = self.SELECTOR() |
| 538 | bad_f = support.make_bad_fd() |
| 539 | with self.assertRaises(OSError) as cm: |
| 540 | s.register(bad_f, selectors.EVENT_READ) |
| 541 | self.assertEqual(cm.exception.errno, errno.EBADF) |
| 542 | # the SelectorKey has been removed |
| 543 | with self.assertRaises(KeyError): |
| 544 | s.get_key(bad_f) |
| 545 | |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 546 | |
Giampaolo Rodola' | f97e829 | 2014-03-20 21:43:41 +0100 | [diff] [blame] | 547 | @unittest.skipUnless(hasattr(selectors, 'DevpollSelector'), |
| 548 | "Test needs selectors.DevpollSelector") |
| 549 | class DevpollSelectorTestCase(BaseSelectorTestCase, ScalableSelectorMixIn): |
| 550 | |
| 551 | SELECTOR = getattr(selectors, 'DevpollSelector', None) |
| 552 | |
| 553 | |
| 554 | |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 555 | def test_main(): |
| 556 | tests = [DefaultSelectorTestCase, SelectSelectorTestCase, |
| 557 | PollSelectorTestCase, EpollSelectorTestCase, |
Giampaolo Rodola' | f97e829 | 2014-03-20 21:43:41 +0100 | [diff] [blame] | 558 | KqueueSelectorTestCase, DevpollSelectorTestCase] |
Charles-François Natali | 243d8d8 | 2013-09-04 19:02:49 +0200 | [diff] [blame] | 559 | support.run_unittest(*tests) |
| 560 | support.reap_children() |
| 561 | |
| 562 | |
| 563 | if __name__ == "__main__": |
| 564 | test_main() |