Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1 | # |
| 2 | # Unit tests for the multiprocessing package |
| 3 | # |
| 4 | |
| 5 | import unittest |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 6 | import queue as pyqueue |
| 7 | import time |
Alexandre Vassalotti | c57a84f | 2009-07-17 12:07:01 +0000 | [diff] [blame] | 8 | import io |
Antoine Pitrou | de911b2 | 2011-12-21 11:03:24 +0100 | [diff] [blame] | 9 | import itertools |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 10 | import sys |
| 11 | import os |
| 12 | import gc |
Antoine Pitrou | c824e9a | 2011-04-05 18:11:33 +0200 | [diff] [blame] | 13 | import errno |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 14 | import signal |
| 15 | import array |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 16 | import socket |
| 17 | import random |
| 18 | import logging |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 19 | import struct |
Richard Oudkerk | fc7b0ec | 2012-10-08 14:56:24 +0100 | [diff] [blame] | 20 | import operator |
Antoine Pitrou | 8988945 | 2017-03-24 13:52:11 +0100 | [diff] [blame] | 21 | import weakref |
R. David Murray | a21e4ca | 2009-03-31 23:16:50 +0000 | [diff] [blame] | 22 | import test.support |
Berker Peksag | 076dbd0 | 2015-05-06 07:01:52 +0300 | [diff] [blame] | 23 | import test.support.script_helper |
Victor Stinner | b9b6900 | 2017-09-14 14:40:56 -0700 | [diff] [blame] | 24 | from test import support |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 25 | |
Benjamin Peterson | e5384b0 | 2008-10-04 22:00:42 +0000 | [diff] [blame] | 26 | |
R. David Murray | a21e4ca | 2009-03-31 23:16:50 +0000 | [diff] [blame] | 27 | # Skip tests if _multiprocessing wasn't built. |
| 28 | _multiprocessing = test.support.import_module('_multiprocessing') |
| 29 | # Skip tests if sem_open implementation is broken. |
| 30 | test.support.import_module('multiprocessing.synchronize') |
Raymond Hettinger | 15f44ab | 2016-08-30 10:47:49 -0700 | [diff] [blame] | 31 | # import threading after _multiprocessing to raise a more relevant error |
Victor Stinner | 45df820 | 2010-04-28 22:31:17 +0000 | [diff] [blame] | 32 | # message: "No module named _multiprocessing". _multiprocessing is not compiled |
| 33 | # without thread support. |
| 34 | import threading |
Benjamin Peterson | e5384b0 | 2008-10-04 22:00:42 +0000 | [diff] [blame] | 35 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 36 | import multiprocessing.connection |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 37 | import multiprocessing.dummy |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 38 | import multiprocessing.heap |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 39 | import multiprocessing.managers |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 40 | import multiprocessing.pool |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 41 | import multiprocessing.queues |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 42 | |
Charles-François Natali | bc8f082 | 2011-09-20 20:36:51 +0200 | [diff] [blame] | 43 | from multiprocessing import util |
| 44 | |
| 45 | try: |
| 46 | from multiprocessing import reduction |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 47 | HAS_REDUCTION = reduction.HAVE_SEND_HANDLE |
Charles-François Natali | bc8f082 | 2011-09-20 20:36:51 +0200 | [diff] [blame] | 48 | except ImportError: |
| 49 | HAS_REDUCTION = False |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 50 | |
Brian Curtin | afa88b5 | 2010-10-07 01:12:19 +0000 | [diff] [blame] | 51 | try: |
| 52 | from multiprocessing.sharedctypes import Value, copy |
| 53 | HAS_SHAREDCTYPES = True |
| 54 | except ImportError: |
| 55 | HAS_SHAREDCTYPES = False |
| 56 | |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 57 | try: |
| 58 | import msvcrt |
| 59 | except ImportError: |
| 60 | msvcrt = None |
| 61 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 62 | # |
| 63 | # |
| 64 | # |
| 65 | |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 66 | # Timeout to wait until a process completes |
| 67 | TIMEOUT = 30.0 # seconds |
| 68 | |
Benjamin Peterson | 2bc91df | 2008-07-13 18:45:30 +0000 | [diff] [blame] | 69 | def latin(s): |
| 70 | return s.encode('latin') |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 71 | |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 72 | |
| 73 | def close_queue(queue): |
| 74 | if isinstance(queue, multiprocessing.queues.Queue): |
| 75 | queue.close() |
| 76 | queue.join_thread() |
| 77 | |
| 78 | |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 79 | def join_process(process): |
Victor Stinner | b9b6900 | 2017-09-14 14:40:56 -0700 | [diff] [blame] | 80 | # Since multiprocessing.Process has the same API than threading.Thread |
| 81 | # (join() and is_alive(), the support function can be reused |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 82 | support.join_thread(process, timeout=TIMEOUT) |
Victor Stinner | b9b6900 | 2017-09-14 14:40:56 -0700 | [diff] [blame] | 83 | |
| 84 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 85 | # |
| 86 | # Constants |
| 87 | # |
| 88 | |
| 89 | LOG_LEVEL = util.SUBWARNING |
Jesse Noller | 1f0b658 | 2010-01-27 03:36:01 +0000 | [diff] [blame] | 90 | #LOG_LEVEL = logging.DEBUG |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 91 | |
| 92 | DELTA = 0.1 |
| 93 | CHECK_TIMINGS = False # making true makes tests take a lot longer |
| 94 | # and can sometimes cause some non-serious |
| 95 | # failures because some calls block a bit |
| 96 | # longer than expected |
| 97 | if CHECK_TIMINGS: |
| 98 | TIMEOUT1, TIMEOUT2, TIMEOUT3 = 0.82, 0.35, 1.4 |
| 99 | else: |
| 100 | TIMEOUT1, TIMEOUT2, TIMEOUT3 = 0.1, 0.1, 0.1 |
| 101 | |
| 102 | HAVE_GETVALUE = not getattr(_multiprocessing, |
| 103 | 'HAVE_BROKEN_SEM_GETVALUE', False) |
| 104 | |
Jesse Noller | 6214edd | 2009-01-19 16:23:53 +0000 | [diff] [blame] | 105 | WIN32 = (sys.platform == "win32") |
Antoine Pitrou | 176f07d | 2011-06-06 19:35:31 +0200 | [diff] [blame] | 106 | |
Richard Oudkerk | 59d5404 | 2012-05-10 16:11:12 +0100 | [diff] [blame] | 107 | from multiprocessing.connection import wait |
Antoine Pitrou | 176f07d | 2011-06-06 19:35:31 +0200 | [diff] [blame] | 108 | |
Richard Oudkerk | 59d5404 | 2012-05-10 16:11:12 +0100 | [diff] [blame] | 109 | def wait_for_handle(handle, timeout): |
| 110 | if timeout is not None and timeout < 0.0: |
| 111 | timeout = None |
| 112 | return wait([handle], timeout) |
Jesse Noller | 6214edd | 2009-01-19 16:23:53 +0000 | [diff] [blame] | 113 | |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 114 | try: |
| 115 | MAXFD = os.sysconf("SC_OPEN_MAX") |
| 116 | except: |
| 117 | MAXFD = 256 |
| 118 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 119 | # To speed up tests when using the forkserver, we can preload these: |
| 120 | PRELOAD = ['__main__', 'test.test_multiprocessing_forkserver'] |
| 121 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 122 | # |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 123 | # Some tests require ctypes |
| 124 | # |
| 125 | |
| 126 | try: |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 127 | from ctypes import Structure, c_int, c_double, c_longlong |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 128 | except ImportError: |
| 129 | Structure = object |
Antoine Pitrou | ff92ff5 | 2017-07-21 13:24:05 +0200 | [diff] [blame] | 130 | c_int = c_double = c_longlong = None |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 131 | |
Charles-François Natali | 221ef67 | 2011-11-22 18:55:22 +0100 | [diff] [blame] | 132 | |
| 133 | def check_enough_semaphores(): |
| 134 | """Check that the system supports enough semaphores to run the test.""" |
| 135 | # minimum number of semaphores available according to POSIX |
| 136 | nsems_min = 256 |
| 137 | try: |
| 138 | nsems = os.sysconf("SC_SEM_NSEMS_MAX") |
| 139 | except (AttributeError, ValueError): |
| 140 | # sysconf not available or setting not available |
| 141 | return |
| 142 | if nsems == -1 or nsems >= nsems_min: |
| 143 | return |
| 144 | raise unittest.SkipTest("The OS doesn't support enough semaphores " |
| 145 | "to run the test (required: %d)." % nsems_min) |
| 146 | |
| 147 | |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 148 | # |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 149 | # Creates a wrapper for a function which records the time it takes to finish |
| 150 | # |
| 151 | |
| 152 | class TimingWrapper(object): |
| 153 | |
| 154 | def __init__(self, func): |
| 155 | self.func = func |
| 156 | self.elapsed = None |
| 157 | |
| 158 | def __call__(self, *args, **kwds): |
| 159 | t = time.time() |
| 160 | try: |
| 161 | return self.func(*args, **kwds) |
| 162 | finally: |
| 163 | self.elapsed = time.time() - t |
| 164 | |
| 165 | # |
| 166 | # Base class for test cases |
| 167 | # |
| 168 | |
| 169 | class BaseTestCase(object): |
| 170 | |
| 171 | ALLOWED_TYPES = ('processes', 'manager', 'threads') |
| 172 | |
| 173 | def assertTimingAlmostEqual(self, a, b): |
| 174 | if CHECK_TIMINGS: |
| 175 | self.assertAlmostEqual(a, b, 1) |
| 176 | |
| 177 | def assertReturnsIfImplemented(self, value, func, *args): |
| 178 | try: |
| 179 | res = func(*args) |
| 180 | except NotImplementedError: |
| 181 | pass |
| 182 | else: |
| 183 | return self.assertEqual(value, res) |
| 184 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 185 | # For the sanity of Windows users, rather than crashing or freezing in |
| 186 | # multiple ways. |
| 187 | def __reduce__(self, *args): |
| 188 | raise NotImplementedError("shouldn't try to pickle a test case") |
| 189 | |
| 190 | __reduce_ex__ = __reduce__ |
| 191 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 192 | # |
| 193 | # Return the value of a semaphore |
| 194 | # |
| 195 | |
| 196 | def get_value(self): |
| 197 | try: |
| 198 | return self.get_value() |
| 199 | except AttributeError: |
| 200 | try: |
| 201 | return self._Semaphore__value |
| 202 | except AttributeError: |
| 203 | try: |
| 204 | return self._value |
| 205 | except AttributeError: |
| 206 | raise NotImplementedError |
| 207 | |
| 208 | # |
| 209 | # Testcases |
| 210 | # |
| 211 | |
Antoine Pitrou | 79d37ae | 2017-06-28 12:29:08 +0200 | [diff] [blame] | 212 | class DummyCallable: |
| 213 | def __call__(self, q, c): |
| 214 | assert isinstance(c, DummyCallable) |
| 215 | q.put(5) |
| 216 | |
| 217 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 218 | class _TestProcess(BaseTestCase): |
| 219 | |
| 220 | ALLOWED_TYPES = ('processes', 'threads') |
| 221 | |
| 222 | def test_current(self): |
| 223 | if self.TYPE == 'threads': |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 224 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 225 | |
| 226 | current = self.current_process() |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 227 | authkey = current.authkey |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 228 | |
| 229 | self.assertTrue(current.is_alive()) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 230 | self.assertTrue(not current.daemon) |
Ezio Melotti | e961593 | 2010-01-24 19:26:24 +0000 | [diff] [blame] | 231 | self.assertIsInstance(authkey, bytes) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 232 | self.assertTrue(len(authkey) > 0) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 233 | self.assertEqual(current.ident, os.getpid()) |
| 234 | self.assertEqual(current.exitcode, None) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 235 | |
Antoine Pitrou | 0bd4deb | 2011-02-25 22:07:43 +0000 | [diff] [blame] | 236 | def test_daemon_argument(self): |
| 237 | if self.TYPE == "threads": |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 238 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Antoine Pitrou | 0bd4deb | 2011-02-25 22:07:43 +0000 | [diff] [blame] | 239 | |
| 240 | # By default uses the current process's daemon flag. |
| 241 | proc0 = self.Process(target=self._test) |
Antoine Pitrou | ec78522 | 2011-03-02 00:15:44 +0000 | [diff] [blame] | 242 | self.assertEqual(proc0.daemon, self.current_process().daemon) |
Antoine Pitrou | 0bd4deb | 2011-02-25 22:07:43 +0000 | [diff] [blame] | 243 | proc1 = self.Process(target=self._test, daemon=True) |
| 244 | self.assertTrue(proc1.daemon) |
| 245 | proc2 = self.Process(target=self._test, daemon=False) |
| 246 | self.assertFalse(proc2.daemon) |
| 247 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 248 | @classmethod |
| 249 | def _test(cls, q, *args, **kwds): |
| 250 | current = cls.current_process() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 251 | q.put(args) |
| 252 | q.put(kwds) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 253 | q.put(current.name) |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 254 | if cls.TYPE != 'threads': |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 255 | q.put(bytes(current.authkey)) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 256 | q.put(current.pid) |
| 257 | |
| 258 | def test_process(self): |
| 259 | q = self.Queue(1) |
| 260 | e = self.Event() |
| 261 | args = (q, 1, 2) |
| 262 | kwargs = {'hello':23, 'bye':2.54} |
| 263 | name = 'SomeProcess' |
| 264 | p = self.Process( |
| 265 | target=self._test, args=args, kwargs=kwargs, name=name |
| 266 | ) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 267 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 268 | current = self.current_process() |
| 269 | |
| 270 | if self.TYPE != 'threads': |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 271 | self.assertEqual(p.authkey, current.authkey) |
| 272 | self.assertEqual(p.is_alive(), False) |
| 273 | self.assertEqual(p.daemon, True) |
Benjamin Peterson | 577473f | 2010-01-19 00:09:57 +0000 | [diff] [blame] | 274 | self.assertNotIn(p, self.active_children()) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 275 | self.assertTrue(type(self.active_children()) is list) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 276 | self.assertEqual(p.exitcode, None) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 277 | |
| 278 | p.start() |
| 279 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 280 | self.assertEqual(p.exitcode, None) |
| 281 | self.assertEqual(p.is_alive(), True) |
Benjamin Peterson | 577473f | 2010-01-19 00:09:57 +0000 | [diff] [blame] | 282 | self.assertIn(p, self.active_children()) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 283 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 284 | self.assertEqual(q.get(), args[1:]) |
| 285 | self.assertEqual(q.get(), kwargs) |
| 286 | self.assertEqual(q.get(), p.name) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 287 | if self.TYPE != 'threads': |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 288 | self.assertEqual(q.get(), current.authkey) |
| 289 | self.assertEqual(q.get(), p.pid) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 290 | |
| 291 | p.join() |
| 292 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 293 | self.assertEqual(p.exitcode, 0) |
| 294 | self.assertEqual(p.is_alive(), False) |
Benjamin Peterson | 577473f | 2010-01-19 00:09:57 +0000 | [diff] [blame] | 295 | self.assertNotIn(p, self.active_children()) |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 296 | close_queue(q) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 297 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 298 | @classmethod |
Vitor Pereira | ba75af7 | 2017-07-18 16:34:23 +0100 | [diff] [blame] | 299 | def _sleep_some(cls): |
Richard Oudkerk | 4f35079 | 2013-10-13 00:49:27 +0100 | [diff] [blame] | 300 | time.sleep(100) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 301 | |
Antoine Pitrou | dfd5f34 | 2017-06-12 15:28:19 +0200 | [diff] [blame] | 302 | @classmethod |
| 303 | def _test_sleep(cls, delay): |
| 304 | time.sleep(delay) |
| 305 | |
Vitor Pereira | ba75af7 | 2017-07-18 16:34:23 +0100 | [diff] [blame] | 306 | def _kill_process(self, meth): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 307 | if self.TYPE == 'threads': |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 308 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 309 | |
Vitor Pereira | ba75af7 | 2017-07-18 16:34:23 +0100 | [diff] [blame] | 310 | p = self.Process(target=self._sleep_some) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 311 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 312 | p.start() |
| 313 | |
| 314 | self.assertEqual(p.is_alive(), True) |
Benjamin Peterson | 577473f | 2010-01-19 00:09:57 +0000 | [diff] [blame] | 315 | self.assertIn(p, self.active_children()) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 316 | self.assertEqual(p.exitcode, None) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 317 | |
Richard Oudkerk | 59d5404 | 2012-05-10 16:11:12 +0100 | [diff] [blame] | 318 | join = TimingWrapper(p.join) |
| 319 | |
| 320 | self.assertEqual(join(0), None) |
| 321 | self.assertTimingAlmostEqual(join.elapsed, 0.0) |
| 322 | self.assertEqual(p.is_alive(), True) |
| 323 | |
| 324 | self.assertEqual(join(-1), None) |
| 325 | self.assertTimingAlmostEqual(join.elapsed, 0.0) |
| 326 | self.assertEqual(p.is_alive(), True) |
| 327 | |
Richard Oudkerk | 26f9268 | 2013-10-17 13:56:18 +0100 | [diff] [blame] | 328 | # XXX maybe terminating too soon causes the problems on Gentoo... |
| 329 | time.sleep(1) |
| 330 | |
Vitor Pereira | ba75af7 | 2017-07-18 16:34:23 +0100 | [diff] [blame] | 331 | meth(p) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 332 | |
Richard Oudkerk | 4f35079 | 2013-10-13 00:49:27 +0100 | [diff] [blame] | 333 | if hasattr(signal, 'alarm'): |
Richard Oudkerk | d44500a | 2013-10-17 10:38:37 +0100 | [diff] [blame] | 334 | # On the Gentoo buildbot waitpid() often seems to block forever. |
Richard Oudkerk | 26f9268 | 2013-10-17 13:56:18 +0100 | [diff] [blame] | 335 | # We use alarm() to interrupt it if it blocks for too long. |
Richard Oudkerk | 4f35079 | 2013-10-13 00:49:27 +0100 | [diff] [blame] | 336 | def handler(*args): |
Richard Oudkerk | b46fe79 | 2013-10-15 16:48:51 +0100 | [diff] [blame] | 337 | raise RuntimeError('join took too long: %s' % p) |
Richard Oudkerk | 4f35079 | 2013-10-13 00:49:27 +0100 | [diff] [blame] | 338 | old_handler = signal.signal(signal.SIGALRM, handler) |
| 339 | try: |
| 340 | signal.alarm(10) |
| 341 | self.assertEqual(join(), None) |
Richard Oudkerk | 4f35079 | 2013-10-13 00:49:27 +0100 | [diff] [blame] | 342 | finally: |
Richard Oudkerk | 1e2f67c | 2013-10-17 14:24:06 +0100 | [diff] [blame] | 343 | signal.alarm(0) |
Richard Oudkerk | 4f35079 | 2013-10-13 00:49:27 +0100 | [diff] [blame] | 344 | signal.signal(signal.SIGALRM, old_handler) |
| 345 | else: |
| 346 | self.assertEqual(join(), None) |
| 347 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 348 | self.assertTimingAlmostEqual(join.elapsed, 0.0) |
| 349 | |
| 350 | self.assertEqual(p.is_alive(), False) |
Benjamin Peterson | 577473f | 2010-01-19 00:09:57 +0000 | [diff] [blame] | 351 | self.assertNotIn(p, self.active_children()) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 352 | |
| 353 | p.join() |
| 354 | |
Vitor Pereira | ba75af7 | 2017-07-18 16:34:23 +0100 | [diff] [blame] | 355 | return p.exitcode |
| 356 | |
| 357 | def test_terminate(self): |
| 358 | exitcode = self._kill_process(multiprocessing.Process.terminate) |
Antoine Pitrou | dfd5f34 | 2017-06-12 15:28:19 +0200 | [diff] [blame] | 359 | if os.name != 'nt': |
Vitor Pereira | ba75af7 | 2017-07-18 16:34:23 +0100 | [diff] [blame] | 360 | self.assertEqual(exitcode, -signal.SIGTERM) |
| 361 | |
| 362 | def test_kill(self): |
| 363 | exitcode = self._kill_process(multiprocessing.Process.kill) |
| 364 | if os.name != 'nt': |
| 365 | self.assertEqual(exitcode, -signal.SIGKILL) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 366 | |
| 367 | def test_cpu_count(self): |
| 368 | try: |
| 369 | cpus = multiprocessing.cpu_count() |
| 370 | except NotImplementedError: |
| 371 | cpus = 1 |
| 372 | self.assertTrue(type(cpus) is int) |
| 373 | self.assertTrue(cpus >= 1) |
| 374 | |
| 375 | def test_active_children(self): |
| 376 | self.assertEqual(type(self.active_children()), list) |
| 377 | |
| 378 | p = self.Process(target=time.sleep, args=(DELTA,)) |
Benjamin Peterson | 577473f | 2010-01-19 00:09:57 +0000 | [diff] [blame] | 379 | self.assertNotIn(p, self.active_children()) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 380 | |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 381 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 382 | p.start() |
Benjamin Peterson | 577473f | 2010-01-19 00:09:57 +0000 | [diff] [blame] | 383 | self.assertIn(p, self.active_children()) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 384 | |
| 385 | p.join() |
Benjamin Peterson | 577473f | 2010-01-19 00:09:57 +0000 | [diff] [blame] | 386 | self.assertNotIn(p, self.active_children()) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 387 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 388 | @classmethod |
| 389 | def _test_recursion(cls, wconn, id): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 390 | wconn.send(id) |
| 391 | if len(id) < 2: |
| 392 | for i in range(2): |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 393 | p = cls.Process( |
| 394 | target=cls._test_recursion, args=(wconn, id+[i]) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 395 | ) |
| 396 | p.start() |
| 397 | p.join() |
| 398 | |
| 399 | def test_recursion(self): |
| 400 | rconn, wconn = self.Pipe(duplex=False) |
| 401 | self._test_recursion(wconn, []) |
| 402 | |
| 403 | time.sleep(DELTA) |
| 404 | result = [] |
| 405 | while rconn.poll(): |
| 406 | result.append(rconn.recv()) |
| 407 | |
| 408 | expected = [ |
| 409 | [], |
| 410 | [0], |
| 411 | [0, 0], |
| 412 | [0, 1], |
| 413 | [1], |
| 414 | [1, 0], |
| 415 | [1, 1] |
| 416 | ] |
| 417 | self.assertEqual(result, expected) |
| 418 | |
Antoine Pitrou | 176f07d | 2011-06-06 19:35:31 +0200 | [diff] [blame] | 419 | @classmethod |
| 420 | def _test_sentinel(cls, event): |
| 421 | event.wait(10.0) |
| 422 | |
| 423 | def test_sentinel(self): |
| 424 | if self.TYPE == "threads": |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 425 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Antoine Pitrou | 176f07d | 2011-06-06 19:35:31 +0200 | [diff] [blame] | 426 | event = self.Event() |
| 427 | p = self.Process(target=self._test_sentinel, args=(event,)) |
| 428 | with self.assertRaises(ValueError): |
| 429 | p.sentinel |
| 430 | p.start() |
| 431 | self.addCleanup(p.join) |
| 432 | sentinel = p.sentinel |
| 433 | self.assertIsInstance(sentinel, int) |
| 434 | self.assertFalse(wait_for_handle(sentinel, timeout=0.0)) |
| 435 | event.set() |
| 436 | p.join() |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 437 | self.assertTrue(wait_for_handle(sentinel, timeout=1)) |
Antoine Pitrou | 176f07d | 2011-06-06 19:35:31 +0200 | [diff] [blame] | 438 | |
Antoine Pitrou | 13e96cc | 2017-06-24 19:22:23 +0200 | [diff] [blame] | 439 | @classmethod |
| 440 | def _test_close(cls, rc=0, q=None): |
| 441 | if q is not None: |
| 442 | q.get() |
| 443 | sys.exit(rc) |
| 444 | |
| 445 | def test_close(self): |
| 446 | if self.TYPE == "threads": |
| 447 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
| 448 | q = self.Queue() |
| 449 | p = self.Process(target=self._test_close, kwargs={'q': q}) |
| 450 | p.daemon = True |
| 451 | p.start() |
| 452 | self.assertEqual(p.is_alive(), True) |
| 453 | # Child is still alive, cannot close |
| 454 | with self.assertRaises(ValueError): |
| 455 | p.close() |
| 456 | |
| 457 | q.put(None) |
| 458 | p.join() |
| 459 | self.assertEqual(p.is_alive(), False) |
| 460 | self.assertEqual(p.exitcode, 0) |
| 461 | p.close() |
| 462 | with self.assertRaises(ValueError): |
| 463 | p.is_alive() |
| 464 | with self.assertRaises(ValueError): |
| 465 | p.join() |
| 466 | with self.assertRaises(ValueError): |
| 467 | p.terminate() |
| 468 | p.close() |
| 469 | |
| 470 | wr = weakref.ref(p) |
| 471 | del p |
| 472 | gc.collect() |
| 473 | self.assertIs(wr(), None) |
| 474 | |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 475 | close_queue(q) |
| 476 | |
Antoine Pitrou | dfd5f34 | 2017-06-12 15:28:19 +0200 | [diff] [blame] | 477 | def test_many_processes(self): |
| 478 | if self.TYPE == 'threads': |
| 479 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
| 480 | |
| 481 | sm = multiprocessing.get_start_method() |
| 482 | N = 5 if sm == 'spawn' else 100 |
| 483 | |
| 484 | # Try to overwhelm the forkserver loop with events |
| 485 | procs = [self.Process(target=self._test_sleep, args=(0.01,)) |
| 486 | for i in range(N)] |
| 487 | for p in procs: |
| 488 | p.start() |
| 489 | for p in procs: |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 490 | join_process(p) |
Antoine Pitrou | dfd5f34 | 2017-06-12 15:28:19 +0200 | [diff] [blame] | 491 | for p in procs: |
| 492 | self.assertEqual(p.exitcode, 0) |
| 493 | |
Vitor Pereira | ba75af7 | 2017-07-18 16:34:23 +0100 | [diff] [blame] | 494 | procs = [self.Process(target=self._sleep_some) |
Antoine Pitrou | dfd5f34 | 2017-06-12 15:28:19 +0200 | [diff] [blame] | 495 | for i in range(N)] |
| 496 | for p in procs: |
| 497 | p.start() |
| 498 | time.sleep(0.001) # let the children start... |
| 499 | for p in procs: |
| 500 | p.terminate() |
| 501 | for p in procs: |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 502 | join_process(p) |
Antoine Pitrou | dfd5f34 | 2017-06-12 15:28:19 +0200 | [diff] [blame] | 503 | if os.name != 'nt': |
Victor Stinner | e6cfdef | 2017-10-02 08:27:34 -0700 | [diff] [blame] | 504 | exitcodes = [-signal.SIGTERM] |
| 505 | if sys.platform == 'darwin': |
| 506 | # bpo-31510: On macOS, killing a freshly started process with |
| 507 | # SIGTERM sometimes kills the process with SIGKILL. |
| 508 | exitcodes.append(-signal.SIGKILL) |
Antoine Pitrou | dfd5f34 | 2017-06-12 15:28:19 +0200 | [diff] [blame] | 509 | for p in procs: |
Victor Stinner | e6cfdef | 2017-10-02 08:27:34 -0700 | [diff] [blame] | 510 | self.assertIn(p.exitcode, exitcodes) |
Antoine Pitrou | dfd5f34 | 2017-06-12 15:28:19 +0200 | [diff] [blame] | 511 | |
Antoine Pitrou | 79d37ae | 2017-06-28 12:29:08 +0200 | [diff] [blame] | 512 | def test_lose_target_ref(self): |
| 513 | c = DummyCallable() |
| 514 | wr = weakref.ref(c) |
| 515 | q = self.Queue() |
| 516 | p = self.Process(target=c, args=(q, c)) |
| 517 | del c |
| 518 | p.start() |
| 519 | p.join() |
| 520 | self.assertIs(wr(), None) |
| 521 | self.assertEqual(q.get(), 5) |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 522 | close_queue(q) |
Antoine Pitrou | 79d37ae | 2017-06-28 12:29:08 +0200 | [diff] [blame] | 523 | |
Antoine Pitrou | 896145d | 2017-07-22 13:22:54 +0200 | [diff] [blame] | 524 | @classmethod |
| 525 | def _test_child_fd_inflation(self, evt, q): |
| 526 | q.put(test.support.fd_count()) |
| 527 | evt.wait() |
| 528 | |
| 529 | def test_child_fd_inflation(self): |
| 530 | # Number of fds in child processes should not grow with the |
| 531 | # number of running children. |
| 532 | if self.TYPE == 'threads': |
| 533 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
| 534 | |
| 535 | sm = multiprocessing.get_start_method() |
| 536 | if sm == 'fork': |
| 537 | # The fork method by design inherits all fds from the parent, |
| 538 | # trying to go against it is a lost battle |
| 539 | self.skipTest('test not appropriate for {}'.format(sm)) |
| 540 | |
| 541 | N = 5 |
| 542 | evt = self.Event() |
| 543 | q = self.Queue() |
| 544 | |
| 545 | procs = [self.Process(target=self._test_child_fd_inflation, args=(evt, q)) |
| 546 | for i in range(N)] |
| 547 | for p in procs: |
| 548 | p.start() |
| 549 | |
| 550 | try: |
| 551 | fd_counts = [q.get() for i in range(N)] |
| 552 | self.assertEqual(len(set(fd_counts)), 1, fd_counts) |
| 553 | |
| 554 | finally: |
| 555 | evt.set() |
| 556 | for p in procs: |
| 557 | p.join() |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 558 | close_queue(q) |
Antoine Pitrou | 79d37ae | 2017-06-28 12:29:08 +0200 | [diff] [blame] | 559 | |
Antoine Pitrou | ee84a60 | 2017-08-16 20:53:28 +0200 | [diff] [blame] | 560 | @classmethod |
| 561 | def _test_wait_for_threads(self, evt): |
| 562 | def func1(): |
| 563 | time.sleep(0.5) |
| 564 | evt.set() |
| 565 | |
| 566 | def func2(): |
| 567 | time.sleep(20) |
| 568 | evt.clear() |
| 569 | |
| 570 | threading.Thread(target=func1).start() |
| 571 | threading.Thread(target=func2, daemon=True).start() |
| 572 | |
| 573 | def test_wait_for_threads(self): |
| 574 | # A child process should wait for non-daemonic threads to end |
| 575 | # before exiting |
| 576 | if self.TYPE == 'threads': |
| 577 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
| 578 | |
| 579 | evt = self.Event() |
| 580 | proc = self.Process(target=self._test_wait_for_threads, args=(evt,)) |
| 581 | proc.start() |
| 582 | proc.join() |
| 583 | self.assertTrue(evt.is_set()) |
| 584 | |
| 585 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 586 | # |
| 587 | # |
| 588 | # |
| 589 | |
| 590 | class _UpperCaser(multiprocessing.Process): |
| 591 | |
| 592 | def __init__(self): |
| 593 | multiprocessing.Process.__init__(self) |
| 594 | self.child_conn, self.parent_conn = multiprocessing.Pipe() |
| 595 | |
| 596 | def run(self): |
| 597 | self.parent_conn.close() |
| 598 | for s in iter(self.child_conn.recv, None): |
| 599 | self.child_conn.send(s.upper()) |
| 600 | self.child_conn.close() |
| 601 | |
| 602 | def submit(self, s): |
| 603 | assert type(s) is str |
| 604 | self.parent_conn.send(s) |
| 605 | return self.parent_conn.recv() |
| 606 | |
| 607 | def stop(self): |
| 608 | self.parent_conn.send(None) |
| 609 | self.parent_conn.close() |
| 610 | self.child_conn.close() |
| 611 | |
| 612 | class _TestSubclassingProcess(BaseTestCase): |
| 613 | |
| 614 | ALLOWED_TYPES = ('processes',) |
| 615 | |
| 616 | def test_subclassing(self): |
| 617 | uppercaser = _UpperCaser() |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 618 | uppercaser.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 619 | uppercaser.start() |
| 620 | self.assertEqual(uppercaser.submit('hello'), 'HELLO') |
| 621 | self.assertEqual(uppercaser.submit('world'), 'WORLD') |
| 622 | uppercaser.stop() |
| 623 | uppercaser.join() |
| 624 | |
Antoine Pitrou | 84a0fbf | 2012-01-27 10:52:37 +0100 | [diff] [blame] | 625 | def test_stderr_flush(self): |
| 626 | # sys.stderr is flushed at process shutdown (issue #13812) |
| 627 | if self.TYPE == "threads": |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 628 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Antoine Pitrou | 84a0fbf | 2012-01-27 10:52:37 +0100 | [diff] [blame] | 629 | |
| 630 | testfn = test.support.TESTFN |
| 631 | self.addCleanup(test.support.unlink, testfn) |
| 632 | proc = self.Process(target=self._test_stderr_flush, args=(testfn,)) |
| 633 | proc.start() |
| 634 | proc.join() |
| 635 | with open(testfn, 'r') as f: |
| 636 | err = f.read() |
| 637 | # The whole traceback was printed |
| 638 | self.assertIn("ZeroDivisionError", err) |
| 639 | self.assertIn("test_multiprocessing.py", err) |
| 640 | self.assertIn("1/0 # MARKER", err) |
| 641 | |
| 642 | @classmethod |
| 643 | def _test_stderr_flush(cls, testfn): |
Victor Stinner | a6d865c | 2016-03-25 09:29:50 +0100 | [diff] [blame] | 644 | fd = os.open(testfn, os.O_WRONLY | os.O_CREAT | os.O_EXCL) |
| 645 | sys.stderr = open(fd, 'w', closefd=False) |
Antoine Pitrou | 84a0fbf | 2012-01-27 10:52:37 +0100 | [diff] [blame] | 646 | 1/0 # MARKER |
| 647 | |
| 648 | |
Richard Oudkerk | 29471de | 2012-06-06 19:04:57 +0100 | [diff] [blame] | 649 | @classmethod |
| 650 | def _test_sys_exit(cls, reason, testfn): |
Victor Stinner | a6d865c | 2016-03-25 09:29:50 +0100 | [diff] [blame] | 651 | fd = os.open(testfn, os.O_WRONLY | os.O_CREAT | os.O_EXCL) |
| 652 | sys.stderr = open(fd, 'w', closefd=False) |
Richard Oudkerk | 29471de | 2012-06-06 19:04:57 +0100 | [diff] [blame] | 653 | sys.exit(reason) |
| 654 | |
| 655 | def test_sys_exit(self): |
| 656 | # See Issue 13854 |
| 657 | if self.TYPE == 'threads': |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 658 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Richard Oudkerk | 29471de | 2012-06-06 19:04:57 +0100 | [diff] [blame] | 659 | |
| 660 | testfn = test.support.TESTFN |
| 661 | self.addCleanup(test.support.unlink, testfn) |
| 662 | |
Victor Stinner | a6d865c | 2016-03-25 09:29:50 +0100 | [diff] [blame] | 663 | for reason in ( |
| 664 | [1, 2, 3], |
| 665 | 'ignore this', |
| 666 | ): |
Richard Oudkerk | 29471de | 2012-06-06 19:04:57 +0100 | [diff] [blame] | 667 | p = self.Process(target=self._test_sys_exit, args=(reason, testfn)) |
| 668 | p.daemon = True |
| 669 | p.start() |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 670 | join_process(p) |
Victor Stinner | a6d865c | 2016-03-25 09:29:50 +0100 | [diff] [blame] | 671 | self.assertEqual(p.exitcode, 1) |
Richard Oudkerk | 29471de | 2012-06-06 19:04:57 +0100 | [diff] [blame] | 672 | |
| 673 | with open(testfn, 'r') as f: |
Victor Stinner | a6d865c | 2016-03-25 09:29:50 +0100 | [diff] [blame] | 674 | content = f.read() |
| 675 | self.assertEqual(content.rstrip(), str(reason)) |
| 676 | |
| 677 | os.unlink(testfn) |
Richard Oudkerk | 29471de | 2012-06-06 19:04:57 +0100 | [diff] [blame] | 678 | |
| 679 | for reason in (True, False, 8): |
| 680 | p = self.Process(target=sys.exit, args=(reason,)) |
| 681 | p.daemon = True |
| 682 | p.start() |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 683 | join_process(p) |
Richard Oudkerk | 29471de | 2012-06-06 19:04:57 +0100 | [diff] [blame] | 684 | self.assertEqual(p.exitcode, reason) |
| 685 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 686 | # |
| 687 | # |
| 688 | # |
| 689 | |
| 690 | def queue_empty(q): |
| 691 | if hasattr(q, 'empty'): |
| 692 | return q.empty() |
| 693 | else: |
| 694 | return q.qsize() == 0 |
| 695 | |
| 696 | def queue_full(q, maxsize): |
| 697 | if hasattr(q, 'full'): |
| 698 | return q.full() |
| 699 | else: |
| 700 | return q.qsize() == maxsize |
| 701 | |
| 702 | |
| 703 | class _TestQueue(BaseTestCase): |
| 704 | |
| 705 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 706 | @classmethod |
| 707 | def _test_put(cls, queue, child_can_start, parent_can_continue): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 708 | child_can_start.wait() |
| 709 | for i in range(6): |
| 710 | queue.get() |
| 711 | parent_can_continue.set() |
| 712 | |
| 713 | def test_put(self): |
| 714 | MAXSIZE = 6 |
| 715 | queue = self.Queue(maxsize=MAXSIZE) |
| 716 | child_can_start = self.Event() |
| 717 | parent_can_continue = self.Event() |
| 718 | |
| 719 | proc = self.Process( |
| 720 | target=self._test_put, |
| 721 | args=(queue, child_can_start, parent_can_continue) |
| 722 | ) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 723 | proc.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 724 | proc.start() |
| 725 | |
| 726 | self.assertEqual(queue_empty(queue), True) |
| 727 | self.assertEqual(queue_full(queue, MAXSIZE), False) |
| 728 | |
| 729 | queue.put(1) |
| 730 | queue.put(2, True) |
| 731 | queue.put(3, True, None) |
| 732 | queue.put(4, False) |
| 733 | queue.put(5, False, None) |
| 734 | queue.put_nowait(6) |
| 735 | |
| 736 | # the values may be in buffer but not yet in pipe so sleep a bit |
| 737 | time.sleep(DELTA) |
| 738 | |
| 739 | self.assertEqual(queue_empty(queue), False) |
| 740 | self.assertEqual(queue_full(queue, MAXSIZE), True) |
| 741 | |
| 742 | put = TimingWrapper(queue.put) |
| 743 | put_nowait = TimingWrapper(queue.put_nowait) |
| 744 | |
| 745 | self.assertRaises(pyqueue.Full, put, 7, False) |
| 746 | self.assertTimingAlmostEqual(put.elapsed, 0) |
| 747 | |
| 748 | self.assertRaises(pyqueue.Full, put, 7, False, None) |
| 749 | self.assertTimingAlmostEqual(put.elapsed, 0) |
| 750 | |
| 751 | self.assertRaises(pyqueue.Full, put_nowait, 7) |
| 752 | self.assertTimingAlmostEqual(put_nowait.elapsed, 0) |
| 753 | |
| 754 | self.assertRaises(pyqueue.Full, put, 7, True, TIMEOUT1) |
| 755 | self.assertTimingAlmostEqual(put.elapsed, TIMEOUT1) |
| 756 | |
| 757 | self.assertRaises(pyqueue.Full, put, 7, False, TIMEOUT2) |
| 758 | self.assertTimingAlmostEqual(put.elapsed, 0) |
| 759 | |
| 760 | self.assertRaises(pyqueue.Full, put, 7, True, timeout=TIMEOUT3) |
| 761 | self.assertTimingAlmostEqual(put.elapsed, TIMEOUT3) |
| 762 | |
| 763 | child_can_start.set() |
| 764 | parent_can_continue.wait() |
| 765 | |
| 766 | self.assertEqual(queue_empty(queue), True) |
| 767 | self.assertEqual(queue_full(queue, MAXSIZE), False) |
| 768 | |
| 769 | proc.join() |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 770 | close_queue(queue) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 771 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 772 | @classmethod |
| 773 | def _test_get(cls, queue, child_can_start, parent_can_continue): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 774 | child_can_start.wait() |
Benjamin Peterson | b29cbbc | 2008-06-16 20:57:14 +0000 | [diff] [blame] | 775 | #queue.put(1) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 776 | queue.put(2) |
| 777 | queue.put(3) |
| 778 | queue.put(4) |
| 779 | queue.put(5) |
| 780 | parent_can_continue.set() |
| 781 | |
| 782 | def test_get(self): |
| 783 | queue = self.Queue() |
| 784 | child_can_start = self.Event() |
| 785 | parent_can_continue = self.Event() |
| 786 | |
| 787 | proc = self.Process( |
| 788 | target=self._test_get, |
| 789 | args=(queue, child_can_start, parent_can_continue) |
| 790 | ) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 791 | proc.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 792 | proc.start() |
| 793 | |
| 794 | self.assertEqual(queue_empty(queue), True) |
| 795 | |
| 796 | child_can_start.set() |
| 797 | parent_can_continue.wait() |
| 798 | |
| 799 | time.sleep(DELTA) |
| 800 | self.assertEqual(queue_empty(queue), False) |
| 801 | |
Benjamin Peterson | b29cbbc | 2008-06-16 20:57:14 +0000 | [diff] [blame] | 802 | # Hangs unexpectedly, remove for now |
| 803 | #self.assertEqual(queue.get(), 1) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 804 | self.assertEqual(queue.get(True, None), 2) |
| 805 | self.assertEqual(queue.get(True), 3) |
| 806 | self.assertEqual(queue.get(timeout=1), 4) |
| 807 | self.assertEqual(queue.get_nowait(), 5) |
| 808 | |
| 809 | self.assertEqual(queue_empty(queue), True) |
| 810 | |
| 811 | get = TimingWrapper(queue.get) |
| 812 | get_nowait = TimingWrapper(queue.get_nowait) |
| 813 | |
| 814 | self.assertRaises(pyqueue.Empty, get, False) |
| 815 | self.assertTimingAlmostEqual(get.elapsed, 0) |
| 816 | |
| 817 | self.assertRaises(pyqueue.Empty, get, False, None) |
| 818 | self.assertTimingAlmostEqual(get.elapsed, 0) |
| 819 | |
| 820 | self.assertRaises(pyqueue.Empty, get_nowait) |
| 821 | self.assertTimingAlmostEqual(get_nowait.elapsed, 0) |
| 822 | |
| 823 | self.assertRaises(pyqueue.Empty, get, True, TIMEOUT1) |
| 824 | self.assertTimingAlmostEqual(get.elapsed, TIMEOUT1) |
| 825 | |
| 826 | self.assertRaises(pyqueue.Empty, get, False, TIMEOUT2) |
| 827 | self.assertTimingAlmostEqual(get.elapsed, 0) |
| 828 | |
| 829 | self.assertRaises(pyqueue.Empty, get, timeout=TIMEOUT3) |
| 830 | self.assertTimingAlmostEqual(get.elapsed, TIMEOUT3) |
| 831 | |
| 832 | proc.join() |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 833 | close_queue(queue) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 834 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 835 | @classmethod |
| 836 | def _test_fork(cls, queue): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 837 | for i in range(10, 20): |
| 838 | queue.put(i) |
| 839 | # note that at this point the items may only be buffered, so the |
| 840 | # process cannot shutdown until the feeder thread has finished |
| 841 | # pushing items onto the pipe. |
| 842 | |
| 843 | def test_fork(self): |
| 844 | # Old versions of Queue would fail to create a new feeder |
| 845 | # thread for a forked process if the original process had its |
| 846 | # own feeder thread. This test checks that this no longer |
| 847 | # happens. |
| 848 | |
| 849 | queue = self.Queue() |
| 850 | |
| 851 | # put items on queue so that main process starts a feeder thread |
| 852 | for i in range(10): |
| 853 | queue.put(i) |
| 854 | |
| 855 | # wait to make sure thread starts before we fork a new process |
| 856 | time.sleep(DELTA) |
| 857 | |
| 858 | # fork process |
| 859 | p = self.Process(target=self._test_fork, args=(queue,)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 860 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 861 | p.start() |
| 862 | |
| 863 | # check that all expected items are in the queue |
| 864 | for i in range(20): |
| 865 | self.assertEqual(queue.get(), i) |
| 866 | self.assertRaises(pyqueue.Empty, queue.get, False) |
| 867 | |
| 868 | p.join() |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 869 | close_queue(queue) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 870 | |
| 871 | def test_qsize(self): |
| 872 | q = self.Queue() |
| 873 | try: |
| 874 | self.assertEqual(q.qsize(), 0) |
| 875 | except NotImplementedError: |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 876 | self.skipTest('qsize method not implemented') |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 877 | q.put(1) |
| 878 | self.assertEqual(q.qsize(), 1) |
| 879 | q.put(5) |
| 880 | self.assertEqual(q.qsize(), 2) |
| 881 | q.get() |
| 882 | self.assertEqual(q.qsize(), 1) |
| 883 | q.get() |
| 884 | self.assertEqual(q.qsize(), 0) |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 885 | close_queue(q) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 886 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 887 | @classmethod |
| 888 | def _test_task_done(cls, q): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 889 | for obj in iter(q.get, None): |
| 890 | time.sleep(DELTA) |
| 891 | q.task_done() |
| 892 | |
| 893 | def test_task_done(self): |
| 894 | queue = self.JoinableQueue() |
| 895 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 896 | workers = [self.Process(target=self._test_task_done, args=(queue,)) |
| 897 | for i in range(4)] |
| 898 | |
| 899 | for p in workers: |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 900 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 901 | p.start() |
| 902 | |
| 903 | for i in range(10): |
| 904 | queue.put(i) |
| 905 | |
| 906 | queue.join() |
| 907 | |
| 908 | for p in workers: |
| 909 | queue.put(None) |
| 910 | |
| 911 | for p in workers: |
| 912 | p.join() |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 913 | close_queue(queue) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 914 | |
Serhiy Storchaka | f8904e9 | 2015-03-06 23:32:54 +0200 | [diff] [blame] | 915 | def test_no_import_lock_contention(self): |
| 916 | with test.support.temp_cwd(): |
| 917 | module_name = 'imported_by_an_imported_module' |
| 918 | with open(module_name + '.py', 'w') as f: |
| 919 | f.write("""if 1: |
| 920 | import multiprocessing |
| 921 | |
| 922 | q = multiprocessing.Queue() |
| 923 | q.put('knock knock') |
| 924 | q.get(timeout=3) |
| 925 | q.close() |
| 926 | del q |
| 927 | """) |
| 928 | |
| 929 | with test.support.DirsOnSysPath(os.getcwd()): |
| 930 | try: |
| 931 | __import__(module_name) |
| 932 | except pyqueue.Empty: |
| 933 | self.fail("Probable regression on import lock contention;" |
| 934 | " see Issue #22853") |
| 935 | |
Giampaolo Rodola' | 3083071 | 2013-04-17 13:12:27 +0200 | [diff] [blame] | 936 | def test_timeout(self): |
| 937 | q = multiprocessing.Queue() |
| 938 | start = time.time() |
Victor Stinner | aad7b2e | 2015-02-05 14:25:05 +0100 | [diff] [blame] | 939 | self.assertRaises(pyqueue.Empty, q.get, True, 0.200) |
Giampaolo Rodola' | 3083071 | 2013-04-17 13:12:27 +0200 | [diff] [blame] | 940 | delta = time.time() - start |
Victor Stinner | aad7b2e | 2015-02-05 14:25:05 +0100 | [diff] [blame] | 941 | # Tolerate a delta of 30 ms because of the bad clock resolution on |
| 942 | # Windows (usually 15.6 ms) |
| 943 | self.assertGreaterEqual(delta, 0.170) |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 944 | close_queue(q) |
Giampaolo Rodola' | 3083071 | 2013-04-17 13:12:27 +0200 | [diff] [blame] | 945 | |
grzgrzgrz3 | bc50f03 | 2017-05-25 16:22:57 +0200 | [diff] [blame] | 946 | def test_queue_feeder_donot_stop_onexc(self): |
| 947 | # bpo-30414: verify feeder handles exceptions correctly |
| 948 | if self.TYPE != 'processes': |
| 949 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
| 950 | |
| 951 | class NotSerializable(object): |
| 952 | def __reduce__(self): |
| 953 | raise AttributeError |
| 954 | with test.support.captured_stderr(): |
| 955 | q = self.Queue() |
| 956 | q.put(NotSerializable()) |
| 957 | q.put(True) |
Victor Stinner | 8f6eeaf | 2017-06-13 23:48:47 +0200 | [diff] [blame] | 958 | # bpo-30595: use a timeout of 1 second for slow buildbots |
| 959 | self.assertTrue(q.get(timeout=1.0)) |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 960 | close_queue(q) |
grzgrzgrz3 | bc50f03 | 2017-05-25 16:22:57 +0200 | [diff] [blame] | 961 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 962 | # |
| 963 | # |
| 964 | # |
| 965 | |
| 966 | class _TestLock(BaseTestCase): |
| 967 | |
| 968 | def test_lock(self): |
| 969 | lock = self.Lock() |
| 970 | self.assertEqual(lock.acquire(), True) |
| 971 | self.assertEqual(lock.acquire(False), False) |
| 972 | self.assertEqual(lock.release(), None) |
| 973 | self.assertRaises((ValueError, threading.ThreadError), lock.release) |
| 974 | |
| 975 | def test_rlock(self): |
| 976 | lock = self.RLock() |
| 977 | self.assertEqual(lock.acquire(), True) |
| 978 | self.assertEqual(lock.acquire(), True) |
| 979 | self.assertEqual(lock.acquire(), True) |
| 980 | self.assertEqual(lock.release(), None) |
| 981 | self.assertEqual(lock.release(), None) |
| 982 | self.assertEqual(lock.release(), None) |
| 983 | self.assertRaises((AssertionError, RuntimeError), lock.release) |
| 984 | |
Jesse Noller | f8d0085 | 2009-03-31 03:25:07 +0000 | [diff] [blame] | 985 | def test_lock_context(self): |
| 986 | with self.Lock(): |
| 987 | pass |
| 988 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 989 | |
| 990 | class _TestSemaphore(BaseTestCase): |
| 991 | |
| 992 | def _test_semaphore(self, sem): |
| 993 | self.assertReturnsIfImplemented(2, get_value, sem) |
| 994 | self.assertEqual(sem.acquire(), True) |
| 995 | self.assertReturnsIfImplemented(1, get_value, sem) |
| 996 | self.assertEqual(sem.acquire(), True) |
| 997 | self.assertReturnsIfImplemented(0, get_value, sem) |
| 998 | self.assertEqual(sem.acquire(False), False) |
| 999 | self.assertReturnsIfImplemented(0, get_value, sem) |
| 1000 | self.assertEqual(sem.release(), None) |
| 1001 | self.assertReturnsIfImplemented(1, get_value, sem) |
| 1002 | self.assertEqual(sem.release(), None) |
| 1003 | self.assertReturnsIfImplemented(2, get_value, sem) |
| 1004 | |
| 1005 | def test_semaphore(self): |
| 1006 | sem = self.Semaphore(2) |
| 1007 | self._test_semaphore(sem) |
| 1008 | self.assertEqual(sem.release(), None) |
| 1009 | self.assertReturnsIfImplemented(3, get_value, sem) |
| 1010 | self.assertEqual(sem.release(), None) |
| 1011 | self.assertReturnsIfImplemented(4, get_value, sem) |
| 1012 | |
| 1013 | def test_bounded_semaphore(self): |
| 1014 | sem = self.BoundedSemaphore(2) |
| 1015 | self._test_semaphore(sem) |
| 1016 | # Currently fails on OS/X |
| 1017 | #if HAVE_GETVALUE: |
| 1018 | # self.assertRaises(ValueError, sem.release) |
| 1019 | # self.assertReturnsIfImplemented(2, get_value, sem) |
| 1020 | |
| 1021 | def test_timeout(self): |
| 1022 | if self.TYPE != 'processes': |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 1023 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1024 | |
| 1025 | sem = self.Semaphore(0) |
| 1026 | acquire = TimingWrapper(sem.acquire) |
| 1027 | |
| 1028 | self.assertEqual(acquire(False), False) |
| 1029 | self.assertTimingAlmostEqual(acquire.elapsed, 0.0) |
| 1030 | |
| 1031 | self.assertEqual(acquire(False, None), False) |
| 1032 | self.assertTimingAlmostEqual(acquire.elapsed, 0.0) |
| 1033 | |
| 1034 | self.assertEqual(acquire(False, TIMEOUT1), False) |
| 1035 | self.assertTimingAlmostEqual(acquire.elapsed, 0) |
| 1036 | |
| 1037 | self.assertEqual(acquire(True, TIMEOUT2), False) |
| 1038 | self.assertTimingAlmostEqual(acquire.elapsed, TIMEOUT2) |
| 1039 | |
| 1040 | self.assertEqual(acquire(timeout=TIMEOUT3), False) |
| 1041 | self.assertTimingAlmostEqual(acquire.elapsed, TIMEOUT3) |
| 1042 | |
| 1043 | |
| 1044 | class _TestCondition(BaseTestCase): |
| 1045 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 1046 | @classmethod |
| 1047 | def f(cls, cond, sleeping, woken, timeout=None): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1048 | cond.acquire() |
| 1049 | sleeping.release() |
| 1050 | cond.wait(timeout) |
| 1051 | woken.release() |
| 1052 | cond.release() |
| 1053 | |
Antoine Pitrou | 4835041 | 2017-07-04 08:59:22 +0200 | [diff] [blame] | 1054 | def assertReachesEventually(self, func, value): |
| 1055 | for i in range(10): |
| 1056 | try: |
| 1057 | if func() == value: |
| 1058 | break |
| 1059 | except NotImplementedError: |
| 1060 | break |
| 1061 | time.sleep(DELTA) |
| 1062 | time.sleep(DELTA) |
| 1063 | self.assertReturnsIfImplemented(value, func) |
| 1064 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1065 | def check_invariant(self, cond): |
| 1066 | # this is only supposed to succeed when there are no sleepers |
| 1067 | if self.TYPE == 'processes': |
| 1068 | try: |
| 1069 | sleepers = (cond._sleeping_count.get_value() - |
| 1070 | cond._woken_count.get_value()) |
| 1071 | self.assertEqual(sleepers, 0) |
| 1072 | self.assertEqual(cond._wait_semaphore.get_value(), 0) |
| 1073 | except NotImplementedError: |
| 1074 | pass |
| 1075 | |
| 1076 | def test_notify(self): |
| 1077 | cond = self.Condition() |
| 1078 | sleeping = self.Semaphore(0) |
| 1079 | woken = self.Semaphore(0) |
| 1080 | |
| 1081 | p = self.Process(target=self.f, args=(cond, sleeping, woken)) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 1082 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1083 | p.start() |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1084 | self.addCleanup(p.join) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1085 | |
| 1086 | p = threading.Thread(target=self.f, args=(cond, sleeping, woken)) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 1087 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1088 | p.start() |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1089 | self.addCleanup(p.join) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1090 | |
| 1091 | # wait for both children to start sleeping |
| 1092 | sleeping.acquire() |
| 1093 | sleeping.acquire() |
| 1094 | |
| 1095 | # check no process/thread has woken up |
| 1096 | time.sleep(DELTA) |
| 1097 | self.assertReturnsIfImplemented(0, get_value, woken) |
| 1098 | |
| 1099 | # wake up one process/thread |
| 1100 | cond.acquire() |
| 1101 | cond.notify() |
| 1102 | cond.release() |
| 1103 | |
| 1104 | # check one process/thread has woken up |
| 1105 | time.sleep(DELTA) |
| 1106 | self.assertReturnsIfImplemented(1, get_value, woken) |
| 1107 | |
| 1108 | # wake up another |
| 1109 | cond.acquire() |
| 1110 | cond.notify() |
| 1111 | cond.release() |
| 1112 | |
| 1113 | # check other has woken up |
| 1114 | time.sleep(DELTA) |
| 1115 | self.assertReturnsIfImplemented(2, get_value, woken) |
| 1116 | |
| 1117 | # check state is not mucked up |
| 1118 | self.check_invariant(cond) |
| 1119 | p.join() |
| 1120 | |
| 1121 | def test_notify_all(self): |
| 1122 | cond = self.Condition() |
| 1123 | sleeping = self.Semaphore(0) |
| 1124 | woken = self.Semaphore(0) |
| 1125 | |
| 1126 | # start some threads/processes which will timeout |
| 1127 | for i in range(3): |
| 1128 | p = self.Process(target=self.f, |
| 1129 | args=(cond, sleeping, woken, TIMEOUT1)) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 1130 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1131 | p.start() |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1132 | self.addCleanup(p.join) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1133 | |
| 1134 | t = threading.Thread(target=self.f, |
| 1135 | args=(cond, sleeping, woken, TIMEOUT1)) |
Benjamin Peterson | 7275370 | 2008-08-18 18:09:21 +0000 | [diff] [blame] | 1136 | t.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1137 | t.start() |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1138 | self.addCleanup(t.join) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1139 | |
| 1140 | # wait for them all to sleep |
| 1141 | for i in range(6): |
| 1142 | sleeping.acquire() |
| 1143 | |
| 1144 | # check they have all timed out |
| 1145 | for i in range(6): |
| 1146 | woken.acquire() |
| 1147 | self.assertReturnsIfImplemented(0, get_value, woken) |
| 1148 | |
| 1149 | # check state is not mucked up |
| 1150 | self.check_invariant(cond) |
| 1151 | |
| 1152 | # start some more threads/processes |
| 1153 | for i in range(3): |
| 1154 | p = self.Process(target=self.f, args=(cond, sleeping, woken)) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 1155 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1156 | p.start() |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1157 | self.addCleanup(p.join) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1158 | |
| 1159 | t = threading.Thread(target=self.f, args=(cond, sleeping, woken)) |
Benjamin Peterson | 7275370 | 2008-08-18 18:09:21 +0000 | [diff] [blame] | 1160 | t.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1161 | t.start() |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1162 | self.addCleanup(t.join) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1163 | |
| 1164 | # wait for them to all sleep |
| 1165 | for i in range(6): |
| 1166 | sleeping.acquire() |
| 1167 | |
| 1168 | # check no process/thread has woken up |
| 1169 | time.sleep(DELTA) |
| 1170 | self.assertReturnsIfImplemented(0, get_value, woken) |
| 1171 | |
| 1172 | # wake them all up |
| 1173 | cond.acquire() |
| 1174 | cond.notify_all() |
| 1175 | cond.release() |
| 1176 | |
| 1177 | # check they have all woken |
Antoine Pitrou | 4835041 | 2017-07-04 08:59:22 +0200 | [diff] [blame] | 1178 | self.assertReachesEventually(lambda: get_value(woken), 6) |
| 1179 | |
| 1180 | # check state is not mucked up |
| 1181 | self.check_invariant(cond) |
| 1182 | |
| 1183 | def test_notify_n(self): |
| 1184 | cond = self.Condition() |
| 1185 | sleeping = self.Semaphore(0) |
| 1186 | woken = self.Semaphore(0) |
| 1187 | |
| 1188 | # start some threads/processes |
| 1189 | for i in range(3): |
| 1190 | p = self.Process(target=self.f, args=(cond, sleeping, woken)) |
| 1191 | p.daemon = True |
| 1192 | p.start() |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1193 | self.addCleanup(p.join) |
Antoine Pitrou | 4835041 | 2017-07-04 08:59:22 +0200 | [diff] [blame] | 1194 | |
| 1195 | t = threading.Thread(target=self.f, args=(cond, sleeping, woken)) |
| 1196 | t.daemon = True |
| 1197 | t.start() |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1198 | self.addCleanup(t.join) |
Antoine Pitrou | 4835041 | 2017-07-04 08:59:22 +0200 | [diff] [blame] | 1199 | |
| 1200 | # wait for them to all sleep |
| 1201 | for i in range(6): |
| 1202 | sleeping.acquire() |
| 1203 | |
| 1204 | # check no process/thread has woken up |
| 1205 | time.sleep(DELTA) |
| 1206 | self.assertReturnsIfImplemented(0, get_value, woken) |
| 1207 | |
| 1208 | # wake some of them up |
| 1209 | cond.acquire() |
| 1210 | cond.notify(n=2) |
| 1211 | cond.release() |
| 1212 | |
| 1213 | # check 2 have woken |
| 1214 | self.assertReachesEventually(lambda: get_value(woken), 2) |
| 1215 | |
| 1216 | # wake the rest of them |
| 1217 | cond.acquire() |
| 1218 | cond.notify(n=4) |
| 1219 | cond.release() |
| 1220 | |
| 1221 | self.assertReachesEventually(lambda: get_value(woken), 6) |
| 1222 | |
| 1223 | # doesn't do anything more |
| 1224 | cond.acquire() |
| 1225 | cond.notify(n=3) |
| 1226 | cond.release() |
| 1227 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1228 | self.assertReturnsIfImplemented(6, get_value, woken) |
| 1229 | |
| 1230 | # check state is not mucked up |
| 1231 | self.check_invariant(cond) |
| 1232 | |
| 1233 | def test_timeout(self): |
| 1234 | cond = self.Condition() |
| 1235 | wait = TimingWrapper(cond.wait) |
| 1236 | cond.acquire() |
| 1237 | res = wait(TIMEOUT1) |
| 1238 | cond.release() |
Georg Brandl | 65ffae0 | 2010-10-28 09:24:56 +0000 | [diff] [blame] | 1239 | self.assertEqual(res, False) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1240 | self.assertTimingAlmostEqual(wait.elapsed, TIMEOUT1) |
| 1241 | |
Charles-François Natali | c8ce715 | 2012-04-17 18:45:57 +0200 | [diff] [blame] | 1242 | @classmethod |
| 1243 | def _test_waitfor_f(cls, cond, state): |
| 1244 | with cond: |
| 1245 | state.value = 0 |
| 1246 | cond.notify() |
| 1247 | result = cond.wait_for(lambda : state.value==4) |
| 1248 | if not result or state.value != 4: |
| 1249 | sys.exit(1) |
| 1250 | |
| 1251 | @unittest.skipUnless(HAS_SHAREDCTYPES, 'needs sharedctypes') |
| 1252 | def test_waitfor(self): |
| 1253 | # based on test in test/lock_tests.py |
| 1254 | cond = self.Condition() |
| 1255 | state = self.Value('i', -1) |
| 1256 | |
| 1257 | p = self.Process(target=self._test_waitfor_f, args=(cond, state)) |
| 1258 | p.daemon = True |
| 1259 | p.start() |
| 1260 | |
| 1261 | with cond: |
| 1262 | result = cond.wait_for(lambda : state.value==0) |
| 1263 | self.assertTrue(result) |
| 1264 | self.assertEqual(state.value, 0) |
| 1265 | |
| 1266 | for i in range(4): |
| 1267 | time.sleep(0.01) |
| 1268 | with cond: |
| 1269 | state.value += 1 |
| 1270 | cond.notify() |
| 1271 | |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 1272 | join_process(p) |
Charles-François Natali | c8ce715 | 2012-04-17 18:45:57 +0200 | [diff] [blame] | 1273 | self.assertEqual(p.exitcode, 0) |
| 1274 | |
| 1275 | @classmethod |
Richard Oudkerk | 6dbca36 | 2012-05-06 16:46:36 +0100 | [diff] [blame] | 1276 | def _test_waitfor_timeout_f(cls, cond, state, success, sem): |
| 1277 | sem.release() |
Charles-François Natali | c8ce715 | 2012-04-17 18:45:57 +0200 | [diff] [blame] | 1278 | with cond: |
| 1279 | expected = 0.1 |
| 1280 | dt = time.time() |
| 1281 | result = cond.wait_for(lambda : state.value==4, timeout=expected) |
| 1282 | dt = time.time() - dt |
| 1283 | # borrow logic in assertTimeout() from test/lock_tests.py |
| 1284 | if not result and expected * 0.6 < dt < expected * 10.0: |
| 1285 | success.value = True |
| 1286 | |
| 1287 | @unittest.skipUnless(HAS_SHAREDCTYPES, 'needs sharedctypes') |
| 1288 | def test_waitfor_timeout(self): |
| 1289 | # based on test in test/lock_tests.py |
| 1290 | cond = self.Condition() |
| 1291 | state = self.Value('i', 0) |
| 1292 | success = self.Value('i', False) |
Richard Oudkerk | 6dbca36 | 2012-05-06 16:46:36 +0100 | [diff] [blame] | 1293 | sem = self.Semaphore(0) |
Charles-François Natali | c8ce715 | 2012-04-17 18:45:57 +0200 | [diff] [blame] | 1294 | |
| 1295 | p = self.Process(target=self._test_waitfor_timeout_f, |
Richard Oudkerk | 6dbca36 | 2012-05-06 16:46:36 +0100 | [diff] [blame] | 1296 | args=(cond, state, success, sem)) |
Charles-François Natali | c8ce715 | 2012-04-17 18:45:57 +0200 | [diff] [blame] | 1297 | p.daemon = True |
| 1298 | p.start() |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 1299 | self.assertTrue(sem.acquire(timeout=TIMEOUT)) |
Charles-François Natali | c8ce715 | 2012-04-17 18:45:57 +0200 | [diff] [blame] | 1300 | |
| 1301 | # Only increment 3 times, so state == 4 is never reached. |
| 1302 | for i in range(3): |
| 1303 | time.sleep(0.01) |
| 1304 | with cond: |
| 1305 | state.value += 1 |
| 1306 | cond.notify() |
| 1307 | |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 1308 | join_process(p) |
Charles-François Natali | c8ce715 | 2012-04-17 18:45:57 +0200 | [diff] [blame] | 1309 | self.assertTrue(success.value) |
| 1310 | |
Richard Oudkerk | 9844993 | 2012-06-05 13:15:29 +0100 | [diff] [blame] | 1311 | @classmethod |
| 1312 | def _test_wait_result(cls, c, pid): |
| 1313 | with c: |
| 1314 | c.notify() |
| 1315 | time.sleep(1) |
| 1316 | if pid is not None: |
| 1317 | os.kill(pid, signal.SIGINT) |
| 1318 | |
| 1319 | def test_wait_result(self): |
| 1320 | if isinstance(self, ProcessesMixin) and sys.platform != 'win32': |
| 1321 | pid = os.getpid() |
| 1322 | else: |
| 1323 | pid = None |
| 1324 | |
| 1325 | c = self.Condition() |
| 1326 | with c: |
| 1327 | self.assertFalse(c.wait(0)) |
| 1328 | self.assertFalse(c.wait(0.1)) |
| 1329 | |
| 1330 | p = self.Process(target=self._test_wait_result, args=(c, pid)) |
| 1331 | p.start() |
| 1332 | |
| 1333 | self.assertTrue(c.wait(10)) |
| 1334 | if pid is not None: |
| 1335 | self.assertRaises(KeyboardInterrupt, c.wait, 10) |
| 1336 | |
| 1337 | p.join() |
| 1338 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1339 | |
| 1340 | class _TestEvent(BaseTestCase): |
| 1341 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 1342 | @classmethod |
| 1343 | def _test_event(cls, event): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1344 | time.sleep(TIMEOUT2) |
| 1345 | event.set() |
| 1346 | |
| 1347 | def test_event(self): |
| 1348 | event = self.Event() |
| 1349 | wait = TimingWrapper(event.wait) |
| 1350 | |
Ezio Melotti | 1392500 | 2011-03-16 11:05:33 +0200 | [diff] [blame] | 1351 | # Removed temporarily, due to API shear, this does not |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1352 | # work with threading._Event objects. is_set == isSet |
Benjamin Peterson | 965ce87 | 2009-04-05 21:24:58 +0000 | [diff] [blame] | 1353 | self.assertEqual(event.is_set(), False) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1354 | |
Benjamin Peterson | 965ce87 | 2009-04-05 21:24:58 +0000 | [diff] [blame] | 1355 | # Removed, threading.Event.wait() will return the value of the __flag |
| 1356 | # instead of None. API Shear with the semaphore backed mp.Event |
| 1357 | self.assertEqual(wait(0.0), False) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1358 | self.assertTimingAlmostEqual(wait.elapsed, 0.0) |
Benjamin Peterson | 965ce87 | 2009-04-05 21:24:58 +0000 | [diff] [blame] | 1359 | self.assertEqual(wait(TIMEOUT1), False) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1360 | self.assertTimingAlmostEqual(wait.elapsed, TIMEOUT1) |
| 1361 | |
| 1362 | event.set() |
| 1363 | |
| 1364 | # See note above on the API differences |
Benjamin Peterson | 965ce87 | 2009-04-05 21:24:58 +0000 | [diff] [blame] | 1365 | self.assertEqual(event.is_set(), True) |
| 1366 | self.assertEqual(wait(), True) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1367 | self.assertTimingAlmostEqual(wait.elapsed, 0.0) |
Benjamin Peterson | 965ce87 | 2009-04-05 21:24:58 +0000 | [diff] [blame] | 1368 | self.assertEqual(wait(TIMEOUT1), True) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1369 | self.assertTimingAlmostEqual(wait.elapsed, 0.0) |
| 1370 | # self.assertEqual(event.is_set(), True) |
| 1371 | |
| 1372 | event.clear() |
| 1373 | |
| 1374 | #self.assertEqual(event.is_set(), False) |
| 1375 | |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 1376 | p = self.Process(target=self._test_event, args=(event,)) |
| 1377 | p.daemon = True |
| 1378 | p.start() |
Benjamin Peterson | 965ce87 | 2009-04-05 21:24:58 +0000 | [diff] [blame] | 1379 | self.assertEqual(wait(), True) |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1380 | p.join() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1381 | |
| 1382 | # |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1383 | # Tests for Barrier - adapted from tests in test/lock_tests.py |
| 1384 | # |
| 1385 | |
| 1386 | # Many of the tests for threading.Barrier use a list as an atomic |
| 1387 | # counter: a value is appended to increment the counter, and the |
| 1388 | # length of the list gives the value. We use the class DummyList |
| 1389 | # for the same purpose. |
| 1390 | |
| 1391 | class _DummyList(object): |
| 1392 | |
| 1393 | def __init__(self): |
| 1394 | wrapper = multiprocessing.heap.BufferWrapper(struct.calcsize('i')) |
| 1395 | lock = multiprocessing.Lock() |
| 1396 | self.__setstate__((wrapper, lock)) |
| 1397 | self._lengthbuf[0] = 0 |
| 1398 | |
| 1399 | def __setstate__(self, state): |
| 1400 | (self._wrapper, self._lock) = state |
| 1401 | self._lengthbuf = self._wrapper.create_memoryview().cast('i') |
| 1402 | |
| 1403 | def __getstate__(self): |
| 1404 | return (self._wrapper, self._lock) |
| 1405 | |
| 1406 | def append(self, _): |
| 1407 | with self._lock: |
| 1408 | self._lengthbuf[0] += 1 |
| 1409 | |
| 1410 | def __len__(self): |
| 1411 | with self._lock: |
| 1412 | return self._lengthbuf[0] |
| 1413 | |
| 1414 | def _wait(): |
| 1415 | # A crude wait/yield function not relying on synchronization primitives. |
| 1416 | time.sleep(0.01) |
| 1417 | |
| 1418 | |
| 1419 | class Bunch(object): |
| 1420 | """ |
| 1421 | A bunch of threads. |
| 1422 | """ |
| 1423 | def __init__(self, namespace, f, args, n, wait_before_exit=False): |
| 1424 | """ |
| 1425 | Construct a bunch of `n` threads running the same function `f`. |
| 1426 | If `wait_before_exit` is True, the threads won't terminate until |
| 1427 | do_finish() is called. |
| 1428 | """ |
| 1429 | self.f = f |
| 1430 | self.args = args |
| 1431 | self.n = n |
| 1432 | self.started = namespace.DummyList() |
| 1433 | self.finished = namespace.DummyList() |
Richard Oudkerk | 0f52346 | 2012-06-15 19:18:30 +0100 | [diff] [blame] | 1434 | self._can_exit = namespace.Event() |
| 1435 | if not wait_before_exit: |
| 1436 | self._can_exit.set() |
Antoine Pitrou | a79f8fa | 2017-06-28 11:21:52 +0200 | [diff] [blame] | 1437 | |
| 1438 | threads = [] |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1439 | for i in range(n): |
Richard Oudkerk | 0f52346 | 2012-06-15 19:18:30 +0100 | [diff] [blame] | 1440 | p = namespace.Process(target=self.task) |
| 1441 | p.daemon = True |
| 1442 | p.start() |
Antoine Pitrou | a79f8fa | 2017-06-28 11:21:52 +0200 | [diff] [blame] | 1443 | threads.append(p) |
| 1444 | |
| 1445 | def finalize(threads): |
| 1446 | for p in threads: |
| 1447 | p.join() |
| 1448 | |
| 1449 | self._finalizer = weakref.finalize(self, finalize, threads) |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1450 | |
| 1451 | def task(self): |
| 1452 | pid = os.getpid() |
| 1453 | self.started.append(pid) |
| 1454 | try: |
| 1455 | self.f(*self.args) |
| 1456 | finally: |
| 1457 | self.finished.append(pid) |
Richard Oudkerk | 0f52346 | 2012-06-15 19:18:30 +0100 | [diff] [blame] | 1458 | self._can_exit.wait(30) |
| 1459 | assert self._can_exit.is_set() |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1460 | |
| 1461 | def wait_for_started(self): |
| 1462 | while len(self.started) < self.n: |
| 1463 | _wait() |
| 1464 | |
| 1465 | def wait_for_finished(self): |
| 1466 | while len(self.finished) < self.n: |
| 1467 | _wait() |
| 1468 | |
| 1469 | def do_finish(self): |
Richard Oudkerk | 0f52346 | 2012-06-15 19:18:30 +0100 | [diff] [blame] | 1470 | self._can_exit.set() |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1471 | |
Antoine Pitrou | a79f8fa | 2017-06-28 11:21:52 +0200 | [diff] [blame] | 1472 | def close(self): |
| 1473 | self._finalizer() |
| 1474 | |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1475 | |
| 1476 | class AppendTrue(object): |
| 1477 | def __init__(self, obj): |
| 1478 | self.obj = obj |
| 1479 | def __call__(self): |
| 1480 | self.obj.append(True) |
| 1481 | |
| 1482 | |
| 1483 | class _TestBarrier(BaseTestCase): |
| 1484 | """ |
| 1485 | Tests for Barrier objects. |
| 1486 | """ |
| 1487 | N = 5 |
Richard Oudkerk | 1375884 | 2012-06-18 14:11:10 +0100 | [diff] [blame] | 1488 | defaultTimeout = 30.0 # XXX Slow Windows buildbots need generous timeout |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1489 | |
| 1490 | def setUp(self): |
| 1491 | self.barrier = self.Barrier(self.N, timeout=self.defaultTimeout) |
| 1492 | |
| 1493 | def tearDown(self): |
| 1494 | self.barrier.abort() |
| 1495 | self.barrier = None |
| 1496 | |
| 1497 | def DummyList(self): |
| 1498 | if self.TYPE == 'threads': |
| 1499 | return [] |
| 1500 | elif self.TYPE == 'manager': |
| 1501 | return self.manager.list() |
| 1502 | else: |
| 1503 | return _DummyList() |
| 1504 | |
| 1505 | def run_threads(self, f, args): |
| 1506 | b = Bunch(self, f, args, self.N-1) |
Antoine Pitrou | a79f8fa | 2017-06-28 11:21:52 +0200 | [diff] [blame] | 1507 | try: |
| 1508 | f(*args) |
| 1509 | b.wait_for_finished() |
| 1510 | finally: |
| 1511 | b.close() |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1512 | |
| 1513 | @classmethod |
| 1514 | def multipass(cls, barrier, results, n): |
| 1515 | m = barrier.parties |
| 1516 | assert m == cls.N |
| 1517 | for i in range(n): |
| 1518 | results[0].append(True) |
| 1519 | assert len(results[1]) == i * m |
| 1520 | barrier.wait() |
| 1521 | results[1].append(True) |
| 1522 | assert len(results[0]) == (i + 1) * m |
| 1523 | barrier.wait() |
| 1524 | try: |
| 1525 | assert barrier.n_waiting == 0 |
| 1526 | except NotImplementedError: |
| 1527 | pass |
| 1528 | assert not barrier.broken |
| 1529 | |
| 1530 | def test_barrier(self, passes=1): |
| 1531 | """ |
| 1532 | Test that a barrier is passed in lockstep |
| 1533 | """ |
| 1534 | results = [self.DummyList(), self.DummyList()] |
| 1535 | self.run_threads(self.multipass, (self.barrier, results, passes)) |
| 1536 | |
| 1537 | def test_barrier_10(self): |
| 1538 | """ |
| 1539 | Test that a barrier works for 10 consecutive runs |
| 1540 | """ |
| 1541 | return self.test_barrier(10) |
| 1542 | |
| 1543 | @classmethod |
| 1544 | def _test_wait_return_f(cls, barrier, queue): |
| 1545 | res = barrier.wait() |
| 1546 | queue.put(res) |
| 1547 | |
| 1548 | def test_wait_return(self): |
| 1549 | """ |
| 1550 | test the return value from barrier.wait |
| 1551 | """ |
| 1552 | queue = self.Queue() |
| 1553 | self.run_threads(self._test_wait_return_f, (self.barrier, queue)) |
| 1554 | results = [queue.get() for i in range(self.N)] |
| 1555 | self.assertEqual(results.count(0), 1) |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 1556 | close_queue(queue) |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1557 | |
| 1558 | @classmethod |
| 1559 | def _test_action_f(cls, barrier, results): |
| 1560 | barrier.wait() |
| 1561 | if len(results) != 1: |
| 1562 | raise RuntimeError |
| 1563 | |
| 1564 | def test_action(self): |
| 1565 | """ |
| 1566 | Test the 'action' callback |
| 1567 | """ |
| 1568 | results = self.DummyList() |
| 1569 | barrier = self.Barrier(self.N, action=AppendTrue(results)) |
| 1570 | self.run_threads(self._test_action_f, (barrier, results)) |
| 1571 | self.assertEqual(len(results), 1) |
| 1572 | |
| 1573 | @classmethod |
| 1574 | def _test_abort_f(cls, barrier, results1, results2): |
| 1575 | try: |
| 1576 | i = barrier.wait() |
| 1577 | if i == cls.N//2: |
| 1578 | raise RuntimeError |
| 1579 | barrier.wait() |
| 1580 | results1.append(True) |
| 1581 | except threading.BrokenBarrierError: |
| 1582 | results2.append(True) |
| 1583 | except RuntimeError: |
| 1584 | barrier.abort() |
| 1585 | |
| 1586 | def test_abort(self): |
| 1587 | """ |
| 1588 | Test that an abort will put the barrier in a broken state |
| 1589 | """ |
| 1590 | results1 = self.DummyList() |
| 1591 | results2 = self.DummyList() |
| 1592 | self.run_threads(self._test_abort_f, |
| 1593 | (self.barrier, results1, results2)) |
| 1594 | self.assertEqual(len(results1), 0) |
| 1595 | self.assertEqual(len(results2), self.N-1) |
| 1596 | self.assertTrue(self.barrier.broken) |
| 1597 | |
| 1598 | @classmethod |
| 1599 | def _test_reset_f(cls, barrier, results1, results2, results3): |
| 1600 | i = barrier.wait() |
| 1601 | if i == cls.N//2: |
| 1602 | # Wait until the other threads are all in the barrier. |
| 1603 | while barrier.n_waiting < cls.N-1: |
| 1604 | time.sleep(0.001) |
| 1605 | barrier.reset() |
| 1606 | else: |
| 1607 | try: |
| 1608 | barrier.wait() |
| 1609 | results1.append(True) |
| 1610 | except threading.BrokenBarrierError: |
| 1611 | results2.append(True) |
| 1612 | # Now, pass the barrier again |
| 1613 | barrier.wait() |
| 1614 | results3.append(True) |
| 1615 | |
| 1616 | def test_reset(self): |
| 1617 | """ |
| 1618 | Test that a 'reset' on a barrier frees the waiting threads |
| 1619 | """ |
| 1620 | results1 = self.DummyList() |
| 1621 | results2 = self.DummyList() |
| 1622 | results3 = self.DummyList() |
| 1623 | self.run_threads(self._test_reset_f, |
| 1624 | (self.barrier, results1, results2, results3)) |
| 1625 | self.assertEqual(len(results1), 0) |
| 1626 | self.assertEqual(len(results2), self.N-1) |
| 1627 | self.assertEqual(len(results3), self.N) |
| 1628 | |
| 1629 | @classmethod |
| 1630 | def _test_abort_and_reset_f(cls, barrier, barrier2, |
| 1631 | results1, results2, results3): |
| 1632 | try: |
| 1633 | i = barrier.wait() |
| 1634 | if i == cls.N//2: |
| 1635 | raise RuntimeError |
| 1636 | barrier.wait() |
| 1637 | results1.append(True) |
| 1638 | except threading.BrokenBarrierError: |
| 1639 | results2.append(True) |
| 1640 | except RuntimeError: |
| 1641 | barrier.abort() |
| 1642 | # Synchronize and reset the barrier. Must synchronize first so |
| 1643 | # that everyone has left it when we reset, and after so that no |
| 1644 | # one enters it before the reset. |
| 1645 | if barrier2.wait() == cls.N//2: |
| 1646 | barrier.reset() |
| 1647 | barrier2.wait() |
| 1648 | barrier.wait() |
| 1649 | results3.append(True) |
| 1650 | |
| 1651 | def test_abort_and_reset(self): |
| 1652 | """ |
| 1653 | Test that a barrier can be reset after being broken. |
| 1654 | """ |
| 1655 | results1 = self.DummyList() |
| 1656 | results2 = self.DummyList() |
| 1657 | results3 = self.DummyList() |
| 1658 | barrier2 = self.Barrier(self.N) |
| 1659 | |
| 1660 | self.run_threads(self._test_abort_and_reset_f, |
| 1661 | (self.barrier, barrier2, results1, results2, results3)) |
| 1662 | self.assertEqual(len(results1), 0) |
| 1663 | self.assertEqual(len(results2), self.N-1) |
| 1664 | self.assertEqual(len(results3), self.N) |
| 1665 | |
| 1666 | @classmethod |
| 1667 | def _test_timeout_f(cls, barrier, results): |
Richard Oudkerk | 1375884 | 2012-06-18 14:11:10 +0100 | [diff] [blame] | 1668 | i = barrier.wait() |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1669 | if i == cls.N//2: |
| 1670 | # One thread is late! |
Richard Oudkerk | 1375884 | 2012-06-18 14:11:10 +0100 | [diff] [blame] | 1671 | time.sleep(1.0) |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1672 | try: |
| 1673 | barrier.wait(0.5) |
| 1674 | except threading.BrokenBarrierError: |
| 1675 | results.append(True) |
| 1676 | |
| 1677 | def test_timeout(self): |
| 1678 | """ |
| 1679 | Test wait(timeout) |
| 1680 | """ |
| 1681 | results = self.DummyList() |
| 1682 | self.run_threads(self._test_timeout_f, (self.barrier, results)) |
| 1683 | self.assertEqual(len(results), self.barrier.parties) |
| 1684 | |
| 1685 | @classmethod |
| 1686 | def _test_default_timeout_f(cls, barrier, results): |
Richard Oudkerk | 1375884 | 2012-06-18 14:11:10 +0100 | [diff] [blame] | 1687 | i = barrier.wait(cls.defaultTimeout) |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1688 | if i == cls.N//2: |
| 1689 | # One thread is later than the default timeout |
Richard Oudkerk | 1375884 | 2012-06-18 14:11:10 +0100 | [diff] [blame] | 1690 | time.sleep(1.0) |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1691 | try: |
| 1692 | barrier.wait() |
| 1693 | except threading.BrokenBarrierError: |
| 1694 | results.append(True) |
| 1695 | |
| 1696 | def test_default_timeout(self): |
| 1697 | """ |
| 1698 | Test the barrier's default timeout |
| 1699 | """ |
Richard Oudkerk | 1375884 | 2012-06-18 14:11:10 +0100 | [diff] [blame] | 1700 | barrier = self.Barrier(self.N, timeout=0.5) |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1701 | results = self.DummyList() |
| 1702 | self.run_threads(self._test_default_timeout_f, (barrier, results)) |
| 1703 | self.assertEqual(len(results), barrier.parties) |
| 1704 | |
| 1705 | def test_single_thread(self): |
| 1706 | b = self.Barrier(1) |
| 1707 | b.wait() |
| 1708 | b.wait() |
| 1709 | |
| 1710 | @classmethod |
| 1711 | def _test_thousand_f(cls, barrier, passes, conn, lock): |
| 1712 | for i in range(passes): |
| 1713 | barrier.wait() |
| 1714 | with lock: |
| 1715 | conn.send(i) |
| 1716 | |
| 1717 | def test_thousand(self): |
| 1718 | if self.TYPE == 'manager': |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 1719 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1720 | passes = 1000 |
| 1721 | lock = self.Lock() |
| 1722 | conn, child_conn = self.Pipe(False) |
| 1723 | for j in range(self.N): |
| 1724 | p = self.Process(target=self._test_thousand_f, |
| 1725 | args=(self.barrier, passes, child_conn, lock)) |
| 1726 | p.start() |
Victor Stinner | d7e64d9 | 2017-07-25 00:33:56 +0200 | [diff] [blame] | 1727 | self.addCleanup(p.join) |
Richard Oudkerk | 3730a17 | 2012-06-15 18:26:07 +0100 | [diff] [blame] | 1728 | |
| 1729 | for i in range(passes): |
| 1730 | for j in range(self.N): |
| 1731 | self.assertEqual(conn.recv(), i) |
| 1732 | |
| 1733 | # |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1734 | # |
| 1735 | # |
| 1736 | |
| 1737 | class _TestValue(BaseTestCase): |
| 1738 | |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 1739 | ALLOWED_TYPES = ('processes',) |
| 1740 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1741 | codes_values = [ |
| 1742 | ('i', 4343, 24234), |
| 1743 | ('d', 3.625, -4.25), |
| 1744 | ('h', -232, 234), |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 1745 | ('q', 2 ** 33, 2 ** 34), |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1746 | ('c', latin('x'), latin('y')) |
| 1747 | ] |
| 1748 | |
Antoine Pitrou | 7744e2a | 2010-11-22 16:26:21 +0000 | [diff] [blame] | 1749 | def setUp(self): |
| 1750 | if not HAS_SHAREDCTYPES: |
| 1751 | self.skipTest("requires multiprocessing.sharedctypes") |
| 1752 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 1753 | @classmethod |
| 1754 | def _test(cls, values): |
| 1755 | for sv, cv in zip(values, cls.codes_values): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1756 | sv.value = cv[2] |
| 1757 | |
| 1758 | |
| 1759 | def test_value(self, raw=False): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1760 | if raw: |
| 1761 | values = [self.RawValue(code, value) |
| 1762 | for code, value, _ in self.codes_values] |
| 1763 | else: |
| 1764 | values = [self.Value(code, value) |
| 1765 | for code, value, _ in self.codes_values] |
| 1766 | |
| 1767 | for sv, cv in zip(values, self.codes_values): |
| 1768 | self.assertEqual(sv.value, cv[1]) |
| 1769 | |
| 1770 | proc = self.Process(target=self._test, args=(values,)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 1771 | proc.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1772 | proc.start() |
| 1773 | proc.join() |
| 1774 | |
| 1775 | for sv, cv in zip(values, self.codes_values): |
| 1776 | self.assertEqual(sv.value, cv[2]) |
| 1777 | |
| 1778 | def test_rawvalue(self): |
| 1779 | self.test_value(raw=True) |
| 1780 | |
| 1781 | def test_getobj_getlock(self): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1782 | val1 = self.Value('i', 5) |
| 1783 | lock1 = val1.get_lock() |
| 1784 | obj1 = val1.get_obj() |
| 1785 | |
| 1786 | val2 = self.Value('i', 5, lock=None) |
| 1787 | lock2 = val2.get_lock() |
| 1788 | obj2 = val2.get_obj() |
| 1789 | |
| 1790 | lock = self.Lock() |
| 1791 | val3 = self.Value('i', 5, lock=lock) |
| 1792 | lock3 = val3.get_lock() |
| 1793 | obj3 = val3.get_obj() |
| 1794 | self.assertEqual(lock, lock3) |
| 1795 | |
Jesse Noller | b0516a6 | 2009-01-18 03:11:38 +0000 | [diff] [blame] | 1796 | arr4 = self.Value('i', 5, lock=False) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1797 | self.assertFalse(hasattr(arr4, 'get_lock')) |
| 1798 | self.assertFalse(hasattr(arr4, 'get_obj')) |
| 1799 | |
Jesse Noller | b0516a6 | 2009-01-18 03:11:38 +0000 | [diff] [blame] | 1800 | self.assertRaises(AttributeError, self.Value, 'i', 5, lock='navalue') |
| 1801 | |
| 1802 | arr5 = self.RawValue('i', 5) |
| 1803 | self.assertFalse(hasattr(arr5, 'get_lock')) |
| 1804 | self.assertFalse(hasattr(arr5, 'get_obj')) |
| 1805 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1806 | |
| 1807 | class _TestArray(BaseTestCase): |
| 1808 | |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 1809 | ALLOWED_TYPES = ('processes',) |
| 1810 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 1811 | @classmethod |
| 1812 | def f(cls, seq): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1813 | for i in range(1, len(seq)): |
| 1814 | seq[i] += seq[i-1] |
| 1815 | |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 1816 | @unittest.skipIf(c_int is None, "requires _ctypes") |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1817 | def test_array(self, raw=False): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1818 | seq = [680, 626, 934, 821, 150, 233, 548, 982, 714, 831] |
| 1819 | if raw: |
| 1820 | arr = self.RawArray('i', seq) |
| 1821 | else: |
| 1822 | arr = self.Array('i', seq) |
| 1823 | |
| 1824 | self.assertEqual(len(arr), len(seq)) |
| 1825 | self.assertEqual(arr[3], seq[3]) |
| 1826 | self.assertEqual(list(arr[2:7]), list(seq[2:7])) |
| 1827 | |
| 1828 | arr[4:8] = seq[4:8] = array.array('i', [1, 2, 3, 4]) |
| 1829 | |
| 1830 | self.assertEqual(list(arr[:]), seq) |
| 1831 | |
| 1832 | self.f(seq) |
| 1833 | |
| 1834 | p = self.Process(target=self.f, args=(arr,)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 1835 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1836 | p.start() |
| 1837 | p.join() |
| 1838 | |
| 1839 | self.assertEqual(list(arr[:]), seq) |
| 1840 | |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 1841 | @unittest.skipIf(c_int is None, "requires _ctypes") |
Mark Dickinson | 89461ef | 2011-03-26 10:19:03 +0000 | [diff] [blame] | 1842 | def test_array_from_size(self): |
| 1843 | size = 10 |
| 1844 | # Test for zeroing (see issue #11675). |
| 1845 | # The repetition below strengthens the test by increasing the chances |
| 1846 | # of previously allocated non-zero memory being used for the new array |
| 1847 | # on the 2nd and 3rd loops. |
| 1848 | for _ in range(3): |
| 1849 | arr = self.Array('i', size) |
| 1850 | self.assertEqual(len(arr), size) |
| 1851 | self.assertEqual(list(arr), [0] * size) |
| 1852 | arr[:] = range(10) |
| 1853 | self.assertEqual(list(arr), list(range(10))) |
| 1854 | del arr |
| 1855 | |
| 1856 | @unittest.skipIf(c_int is None, "requires _ctypes") |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1857 | def test_rawarray(self): |
| 1858 | self.test_array(raw=True) |
| 1859 | |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 1860 | @unittest.skipIf(c_int is None, "requires _ctypes") |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1861 | def test_getobj_getlock_obj(self): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1862 | arr1 = self.Array('i', list(range(10))) |
| 1863 | lock1 = arr1.get_lock() |
| 1864 | obj1 = arr1.get_obj() |
| 1865 | |
| 1866 | arr2 = self.Array('i', list(range(10)), lock=None) |
| 1867 | lock2 = arr2.get_lock() |
| 1868 | obj2 = arr2.get_obj() |
| 1869 | |
| 1870 | lock = self.Lock() |
| 1871 | arr3 = self.Array('i', list(range(10)), lock=lock) |
| 1872 | lock3 = arr3.get_lock() |
| 1873 | obj3 = arr3.get_obj() |
| 1874 | self.assertEqual(lock, lock3) |
| 1875 | |
Jesse Noller | b0516a6 | 2009-01-18 03:11:38 +0000 | [diff] [blame] | 1876 | arr4 = self.Array('i', range(10), lock=False) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1877 | self.assertFalse(hasattr(arr4, 'get_lock')) |
| 1878 | self.assertFalse(hasattr(arr4, 'get_obj')) |
Jesse Noller | b0516a6 | 2009-01-18 03:11:38 +0000 | [diff] [blame] | 1879 | self.assertRaises(AttributeError, |
| 1880 | self.Array, 'i', range(10), lock='notalock') |
| 1881 | |
| 1882 | arr5 = self.RawArray('i', range(10)) |
| 1883 | self.assertFalse(hasattr(arr5, 'get_lock')) |
| 1884 | self.assertFalse(hasattr(arr5, 'get_obj')) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1885 | |
| 1886 | # |
| 1887 | # |
| 1888 | # |
| 1889 | |
| 1890 | class _TestContainers(BaseTestCase): |
| 1891 | |
| 1892 | ALLOWED_TYPES = ('manager',) |
| 1893 | |
| 1894 | def test_list(self): |
| 1895 | a = self.list(list(range(10))) |
| 1896 | self.assertEqual(a[:], list(range(10))) |
| 1897 | |
| 1898 | b = self.list() |
| 1899 | self.assertEqual(b[:], []) |
| 1900 | |
| 1901 | b.extend(list(range(5))) |
| 1902 | self.assertEqual(b[:], list(range(5))) |
| 1903 | |
| 1904 | self.assertEqual(b[2], 2) |
| 1905 | self.assertEqual(b[2:10], [2,3,4]) |
| 1906 | |
| 1907 | b *= 2 |
| 1908 | self.assertEqual(b[:], [0, 1, 2, 3, 4, 0, 1, 2, 3, 4]) |
| 1909 | |
| 1910 | self.assertEqual(b + [5, 6], [0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 6]) |
| 1911 | |
| 1912 | self.assertEqual(a[:], list(range(10))) |
| 1913 | |
| 1914 | d = [a, b] |
| 1915 | e = self.list(d) |
| 1916 | self.assertEqual( |
Davin Potts | 86a7668 | 2016-09-07 18:48:01 -0500 | [diff] [blame] | 1917 | [element[:] for element in e], |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1918 | [[0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [0, 1, 2, 3, 4, 0, 1, 2, 3, 4]] |
| 1919 | ) |
| 1920 | |
| 1921 | f = self.list([a]) |
| 1922 | a.append('hello') |
Davin Potts | 86a7668 | 2016-09-07 18:48:01 -0500 | [diff] [blame] | 1923 | self.assertEqual(f[0][:], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 'hello']) |
| 1924 | |
| 1925 | def test_list_proxy_in_list(self): |
| 1926 | a = self.list([self.list(range(3)) for _i in range(3)]) |
| 1927 | self.assertEqual([inner[:] for inner in a], [[0, 1, 2]] * 3) |
| 1928 | |
| 1929 | a[0][-1] = 55 |
| 1930 | self.assertEqual(a[0][:], [0, 1, 55]) |
| 1931 | for i in range(1, 3): |
| 1932 | self.assertEqual(a[i][:], [0, 1, 2]) |
| 1933 | |
| 1934 | self.assertEqual(a[1].pop(), 2) |
| 1935 | self.assertEqual(len(a[1]), 2) |
| 1936 | for i in range(0, 3, 2): |
| 1937 | self.assertEqual(len(a[i]), 3) |
| 1938 | |
| 1939 | del a |
| 1940 | |
| 1941 | b = self.list() |
| 1942 | b.append(b) |
| 1943 | del b |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 1944 | |
| 1945 | def test_dict(self): |
| 1946 | d = self.dict() |
| 1947 | indices = list(range(65, 70)) |
| 1948 | for i in indices: |
| 1949 | d[i] = chr(i) |
| 1950 | self.assertEqual(d.copy(), dict((i, chr(i)) for i in indices)) |
| 1951 | self.assertEqual(sorted(d.keys()), indices) |
| 1952 | self.assertEqual(sorted(d.values()), [chr(i) for i in indices]) |
| 1953 | self.assertEqual(sorted(d.items()), [(i, chr(i)) for i in indices]) |
| 1954 | |
Davin Potts | 86a7668 | 2016-09-07 18:48:01 -0500 | [diff] [blame] | 1955 | def test_dict_proxy_nested(self): |
| 1956 | pets = self.dict(ferrets=2, hamsters=4) |
| 1957 | supplies = self.dict(water=10, feed=3) |
| 1958 | d = self.dict(pets=pets, supplies=supplies) |
| 1959 | |
| 1960 | self.assertEqual(supplies['water'], 10) |
| 1961 | self.assertEqual(d['supplies']['water'], 10) |
| 1962 | |
| 1963 | d['supplies']['blankets'] = 5 |
| 1964 | self.assertEqual(supplies['blankets'], 5) |
| 1965 | self.assertEqual(d['supplies']['blankets'], 5) |
| 1966 | |
| 1967 | d['supplies']['water'] = 7 |
| 1968 | self.assertEqual(supplies['water'], 7) |
| 1969 | self.assertEqual(d['supplies']['water'], 7) |
| 1970 | |
| 1971 | del pets |
| 1972 | del supplies |
| 1973 | self.assertEqual(d['pets']['ferrets'], 2) |
| 1974 | d['supplies']['blankets'] = 11 |
| 1975 | self.assertEqual(d['supplies']['blankets'], 11) |
| 1976 | |
| 1977 | pets = d['pets'] |
| 1978 | supplies = d['supplies'] |
| 1979 | supplies['water'] = 7 |
| 1980 | self.assertEqual(supplies['water'], 7) |
| 1981 | self.assertEqual(d['supplies']['water'], 7) |
| 1982 | |
| 1983 | d.clear() |
| 1984 | self.assertEqual(len(d), 0) |
| 1985 | self.assertEqual(supplies['water'], 7) |
| 1986 | self.assertEqual(pets['hamsters'], 4) |
| 1987 | |
| 1988 | l = self.list([pets, supplies]) |
| 1989 | l[0]['marmots'] = 1 |
| 1990 | self.assertEqual(pets['marmots'], 1) |
| 1991 | self.assertEqual(l[0]['marmots'], 1) |
| 1992 | |
| 1993 | del pets |
| 1994 | del supplies |
| 1995 | self.assertEqual(l[0]['marmots'], 1) |
| 1996 | |
| 1997 | outer = self.list([[88, 99], l]) |
| 1998 | self.assertIsInstance(outer[0], list) # Not a ListProxy |
| 1999 | self.assertEqual(outer[-1][-1]['feed'], 3) |
| 2000 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2001 | def test_namespace(self): |
| 2002 | n = self.Namespace() |
| 2003 | n.name = 'Bob' |
| 2004 | n.job = 'Builder' |
| 2005 | n._hidden = 'hidden' |
| 2006 | self.assertEqual((n.name, n.job), ('Bob', 'Builder')) |
| 2007 | del n.job |
| 2008 | self.assertEqual(str(n), "Namespace(name='Bob')") |
| 2009 | self.assertTrue(hasattr(n, 'name')) |
| 2010 | self.assertTrue(not hasattr(n, 'job')) |
| 2011 | |
| 2012 | # |
| 2013 | # |
| 2014 | # |
| 2015 | |
| 2016 | def sqr(x, wait=0.0): |
| 2017 | time.sleep(wait) |
| 2018 | return x*x |
Ask Solem | 2afcbf2 | 2010-11-09 20:55:52 +0000 | [diff] [blame] | 2019 | |
Antoine Pitrou | de911b2 | 2011-12-21 11:03:24 +0100 | [diff] [blame] | 2020 | def mul(x, y): |
| 2021 | return x*y |
| 2022 | |
Charles-François Natali | 78f55ff | 2016-02-10 22:58:18 +0000 | [diff] [blame] | 2023 | def raise_large_valuerror(wait): |
| 2024 | time.sleep(wait) |
| 2025 | raise ValueError("x" * 1024**2) |
| 2026 | |
Antoine Pitrou | 8988945 | 2017-03-24 13:52:11 +0100 | [diff] [blame] | 2027 | def identity(x): |
| 2028 | return x |
| 2029 | |
| 2030 | class CountedObject(object): |
| 2031 | n_instances = 0 |
| 2032 | |
| 2033 | def __new__(cls): |
| 2034 | cls.n_instances += 1 |
| 2035 | return object.__new__(cls) |
| 2036 | |
| 2037 | def __del__(self): |
| 2038 | type(self).n_instances -= 1 |
| 2039 | |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2040 | class SayWhenError(ValueError): pass |
| 2041 | |
| 2042 | def exception_throwing_generator(total, when): |
Xiang Zhang | 794623b | 2017-03-29 11:58:54 +0800 | [diff] [blame] | 2043 | if when == -1: |
| 2044 | raise SayWhenError("Somebody said when") |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2045 | for i in range(total): |
| 2046 | if i == when: |
| 2047 | raise SayWhenError("Somebody said when") |
| 2048 | yield i |
| 2049 | |
Antoine Pitrou | 8988945 | 2017-03-24 13:52:11 +0100 | [diff] [blame] | 2050 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2051 | class _TestPool(BaseTestCase): |
| 2052 | |
Richard Oudkerk | fc7b0ec | 2012-10-08 14:56:24 +0100 | [diff] [blame] | 2053 | @classmethod |
| 2054 | def setUpClass(cls): |
| 2055 | super().setUpClass() |
| 2056 | cls.pool = cls.Pool(4) |
| 2057 | |
| 2058 | @classmethod |
| 2059 | def tearDownClass(cls): |
| 2060 | cls.pool.terminate() |
| 2061 | cls.pool.join() |
| 2062 | cls.pool = None |
| 2063 | super().tearDownClass() |
| 2064 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2065 | def test_apply(self): |
| 2066 | papply = self.pool.apply |
| 2067 | self.assertEqual(papply(sqr, (5,)), sqr(5)) |
| 2068 | self.assertEqual(papply(sqr, (), {'x':3}), sqr(x=3)) |
| 2069 | |
| 2070 | def test_map(self): |
| 2071 | pmap = self.pool.map |
| 2072 | self.assertEqual(pmap(sqr, list(range(10))), list(map(sqr, list(range(10))))) |
| 2073 | self.assertEqual(pmap(sqr, list(range(100)), chunksize=20), |
| 2074 | list(map(sqr, list(range(100))))) |
| 2075 | |
Antoine Pitrou | de911b2 | 2011-12-21 11:03:24 +0100 | [diff] [blame] | 2076 | def test_starmap(self): |
| 2077 | psmap = self.pool.starmap |
| 2078 | tuples = list(zip(range(10), range(9,-1, -1))) |
| 2079 | self.assertEqual(psmap(mul, tuples), |
| 2080 | list(itertools.starmap(mul, tuples))) |
| 2081 | tuples = list(zip(range(100), range(99,-1, -1))) |
| 2082 | self.assertEqual(psmap(mul, tuples, chunksize=20), |
| 2083 | list(itertools.starmap(mul, tuples))) |
| 2084 | |
| 2085 | def test_starmap_async(self): |
| 2086 | tuples = list(zip(range(100), range(99,-1, -1))) |
| 2087 | self.assertEqual(self.pool.starmap_async(mul, tuples).get(), |
| 2088 | list(itertools.starmap(mul, tuples))) |
| 2089 | |
Hynek Schlawack | 254af26 | 2012-10-27 12:53:02 +0200 | [diff] [blame] | 2090 | def test_map_async(self): |
| 2091 | self.assertEqual(self.pool.map_async(sqr, list(range(10))).get(), |
| 2092 | list(map(sqr, list(range(10))))) |
| 2093 | |
| 2094 | def test_map_async_callbacks(self): |
| 2095 | call_args = self.manager.list() if self.TYPE == 'manager' else [] |
| 2096 | self.pool.map_async(int, ['1'], |
| 2097 | callback=call_args.append, |
| 2098 | error_callback=call_args.append).wait() |
| 2099 | self.assertEqual(1, len(call_args)) |
| 2100 | self.assertEqual([1], call_args[0]) |
| 2101 | self.pool.map_async(int, ['a'], |
| 2102 | callback=call_args.append, |
| 2103 | error_callback=call_args.append).wait() |
| 2104 | self.assertEqual(2, len(call_args)) |
| 2105 | self.assertIsInstance(call_args[1], ValueError) |
| 2106 | |
Richard Oudkerk | e90cedb | 2013-10-28 23:11:58 +0000 | [diff] [blame] | 2107 | def test_map_unplicklable(self): |
| 2108 | # Issue #19425 -- failure to pickle should not cause a hang |
| 2109 | if self.TYPE == 'threads': |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 2110 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Richard Oudkerk | e90cedb | 2013-10-28 23:11:58 +0000 | [diff] [blame] | 2111 | class A(object): |
| 2112 | def __reduce__(self): |
| 2113 | raise RuntimeError('cannot pickle') |
| 2114 | with self.assertRaises(RuntimeError): |
| 2115 | self.pool.map(sqr, [A()]*10) |
| 2116 | |
Alexandre Vassalotti | e52e378 | 2009-07-17 09:18:18 +0000 | [diff] [blame] | 2117 | def test_map_chunksize(self): |
| 2118 | try: |
| 2119 | self.pool.map_async(sqr, [], chunksize=1).get(timeout=TIMEOUT1) |
| 2120 | except multiprocessing.TimeoutError: |
| 2121 | self.fail("pool.map_async with chunksize stalled on null list") |
| 2122 | |
Xiang Zhang | 794623b | 2017-03-29 11:58:54 +0800 | [diff] [blame] | 2123 | def test_map_handle_iterable_exception(self): |
| 2124 | if self.TYPE == 'manager': |
| 2125 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
| 2126 | |
| 2127 | # SayWhenError seen at the very first of the iterable |
| 2128 | with self.assertRaises(SayWhenError): |
| 2129 | self.pool.map(sqr, exception_throwing_generator(1, -1), 1) |
| 2130 | # again, make sure it's reentrant |
| 2131 | with self.assertRaises(SayWhenError): |
| 2132 | self.pool.map(sqr, exception_throwing_generator(1, -1), 1) |
| 2133 | |
| 2134 | with self.assertRaises(SayWhenError): |
| 2135 | self.pool.map(sqr, exception_throwing_generator(10, 3), 1) |
| 2136 | |
| 2137 | class SpecialIterable: |
| 2138 | def __iter__(self): |
| 2139 | return self |
| 2140 | def __next__(self): |
| 2141 | raise SayWhenError |
| 2142 | def __len__(self): |
| 2143 | return 1 |
| 2144 | with self.assertRaises(SayWhenError): |
| 2145 | self.pool.map(sqr, SpecialIterable(), 1) |
| 2146 | with self.assertRaises(SayWhenError): |
| 2147 | self.pool.map(sqr, SpecialIterable(), 1) |
| 2148 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2149 | def test_async(self): |
| 2150 | res = self.pool.apply_async(sqr, (7, TIMEOUT1,)) |
| 2151 | get = TimingWrapper(res.get) |
| 2152 | self.assertEqual(get(), 49) |
| 2153 | self.assertTimingAlmostEqual(get.elapsed, TIMEOUT1) |
| 2154 | |
| 2155 | def test_async_timeout(self): |
Richard Oudkerk | 46b4a5e | 2013-11-17 17:45:16 +0000 | [diff] [blame] | 2156 | res = self.pool.apply_async(sqr, (6, TIMEOUT2 + 1.0)) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2157 | get = TimingWrapper(res.get) |
| 2158 | self.assertRaises(multiprocessing.TimeoutError, get, timeout=TIMEOUT2) |
| 2159 | self.assertTimingAlmostEqual(get.elapsed, TIMEOUT2) |
| 2160 | |
| 2161 | def test_imap(self): |
| 2162 | it = self.pool.imap(sqr, list(range(10))) |
| 2163 | self.assertEqual(list(it), list(map(sqr, list(range(10))))) |
| 2164 | |
| 2165 | it = self.pool.imap(sqr, list(range(10))) |
| 2166 | for i in range(10): |
| 2167 | self.assertEqual(next(it), i*i) |
| 2168 | self.assertRaises(StopIteration, it.__next__) |
| 2169 | |
| 2170 | it = self.pool.imap(sqr, list(range(1000)), chunksize=100) |
| 2171 | for i in range(1000): |
| 2172 | self.assertEqual(next(it), i*i) |
| 2173 | self.assertRaises(StopIteration, it.__next__) |
| 2174 | |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2175 | def test_imap_handle_iterable_exception(self): |
| 2176 | if self.TYPE == 'manager': |
| 2177 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
| 2178 | |
Xiang Zhang | 794623b | 2017-03-29 11:58:54 +0800 | [diff] [blame] | 2179 | # SayWhenError seen at the very first of the iterable |
| 2180 | it = self.pool.imap(sqr, exception_throwing_generator(1, -1), 1) |
| 2181 | self.assertRaises(SayWhenError, it.__next__) |
| 2182 | # again, make sure it's reentrant |
| 2183 | it = self.pool.imap(sqr, exception_throwing_generator(1, -1), 1) |
| 2184 | self.assertRaises(SayWhenError, it.__next__) |
| 2185 | |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2186 | it = self.pool.imap(sqr, exception_throwing_generator(10, 3), 1) |
| 2187 | for i in range(3): |
| 2188 | self.assertEqual(next(it), i*i) |
| 2189 | self.assertRaises(SayWhenError, it.__next__) |
| 2190 | |
| 2191 | # SayWhenError seen at start of problematic chunk's results |
| 2192 | it = self.pool.imap(sqr, exception_throwing_generator(20, 7), 2) |
| 2193 | for i in range(6): |
| 2194 | self.assertEqual(next(it), i*i) |
| 2195 | self.assertRaises(SayWhenError, it.__next__) |
| 2196 | it = self.pool.imap(sqr, exception_throwing_generator(20, 7), 4) |
| 2197 | for i in range(4): |
| 2198 | self.assertEqual(next(it), i*i) |
| 2199 | self.assertRaises(SayWhenError, it.__next__) |
| 2200 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2201 | def test_imap_unordered(self): |
| 2202 | it = self.pool.imap_unordered(sqr, list(range(1000))) |
| 2203 | self.assertEqual(sorted(it), list(map(sqr, list(range(1000))))) |
| 2204 | |
| 2205 | it = self.pool.imap_unordered(sqr, list(range(1000)), chunksize=53) |
| 2206 | self.assertEqual(sorted(it), list(map(sqr, list(range(1000))))) |
| 2207 | |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2208 | def test_imap_unordered_handle_iterable_exception(self): |
| 2209 | if self.TYPE == 'manager': |
| 2210 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
| 2211 | |
Xiang Zhang | 794623b | 2017-03-29 11:58:54 +0800 | [diff] [blame] | 2212 | # SayWhenError seen at the very first of the iterable |
| 2213 | it = self.pool.imap_unordered(sqr, |
| 2214 | exception_throwing_generator(1, -1), |
| 2215 | 1) |
| 2216 | self.assertRaises(SayWhenError, it.__next__) |
| 2217 | # again, make sure it's reentrant |
| 2218 | it = self.pool.imap_unordered(sqr, |
| 2219 | exception_throwing_generator(1, -1), |
| 2220 | 1) |
| 2221 | self.assertRaises(SayWhenError, it.__next__) |
| 2222 | |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2223 | it = self.pool.imap_unordered(sqr, |
| 2224 | exception_throwing_generator(10, 3), |
| 2225 | 1) |
Serhiy Storchaka | 71f73ca | 2015-04-23 11:35:59 +0300 | [diff] [blame] | 2226 | expected_values = list(map(sqr, list(range(10)))) |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2227 | with self.assertRaises(SayWhenError): |
| 2228 | # imap_unordered makes it difficult to anticipate the SayWhenError |
| 2229 | for i in range(10): |
Serhiy Storchaka | 71f73ca | 2015-04-23 11:35:59 +0300 | [diff] [blame] | 2230 | value = next(it) |
| 2231 | self.assertIn(value, expected_values) |
| 2232 | expected_values.remove(value) |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2233 | |
| 2234 | it = self.pool.imap_unordered(sqr, |
| 2235 | exception_throwing_generator(20, 7), |
| 2236 | 2) |
Serhiy Storchaka | 71f73ca | 2015-04-23 11:35:59 +0300 | [diff] [blame] | 2237 | expected_values = list(map(sqr, list(range(20)))) |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2238 | with self.assertRaises(SayWhenError): |
| 2239 | for i in range(20): |
Serhiy Storchaka | 71f73ca | 2015-04-23 11:35:59 +0300 | [diff] [blame] | 2240 | value = next(it) |
| 2241 | self.assertIn(value, expected_values) |
| 2242 | expected_values.remove(value) |
Serhiy Storchaka | 79fbeee | 2015-03-13 08:25:26 +0200 | [diff] [blame] | 2243 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2244 | def test_make_pool(self): |
Antoine Pitrou | 62b6a0d | 2016-03-15 10:48:28 +0100 | [diff] [blame] | 2245 | expected_error = (RemoteError if self.TYPE == 'manager' |
| 2246 | else ValueError) |
Victor Stinner | 2fae27b | 2011-06-20 17:53:35 +0200 | [diff] [blame] | 2247 | |
Antoine Pitrou | 62b6a0d | 2016-03-15 10:48:28 +0100 | [diff] [blame] | 2248 | self.assertRaises(expected_error, self.Pool, -1) |
| 2249 | self.assertRaises(expected_error, self.Pool, 0) |
| 2250 | |
| 2251 | if self.TYPE != 'manager': |
| 2252 | p = self.Pool(3) |
| 2253 | try: |
| 2254 | self.assertEqual(3, len(p._pool)) |
| 2255 | finally: |
| 2256 | p.close() |
| 2257 | p.join() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2258 | |
| 2259 | def test_terminate(self): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2260 | result = self.pool.map_async( |
| 2261 | time.sleep, [0.1 for i in range(10000)], chunksize=1 |
| 2262 | ) |
| 2263 | self.pool.terminate() |
| 2264 | join = TimingWrapper(self.pool.join) |
| 2265 | join() |
Antoine Pitrou | 62b6a0d | 2016-03-15 10:48:28 +0100 | [diff] [blame] | 2266 | # Sanity check the pool didn't wait for all tasks to finish |
| 2267 | self.assertLess(join.elapsed, 2.0) |
Jesse Noller | 1f0b658 | 2010-01-27 03:36:01 +0000 | [diff] [blame] | 2268 | |
Richard Oudkerk | e41682b | 2012-06-06 19:04:57 +0100 | [diff] [blame] | 2269 | def test_empty_iterable(self): |
| 2270 | # See Issue 12157 |
| 2271 | p = self.Pool(1) |
| 2272 | |
| 2273 | self.assertEqual(p.map(sqr, []), []) |
| 2274 | self.assertEqual(list(p.imap(sqr, [])), []) |
| 2275 | self.assertEqual(list(p.imap_unordered(sqr, [])), []) |
| 2276 | self.assertEqual(p.map_async(sqr, []).get(), []) |
| 2277 | |
| 2278 | p.close() |
| 2279 | p.join() |
| 2280 | |
Richard Oudkerk | d69cfe8 | 2012-06-18 17:47:52 +0100 | [diff] [blame] | 2281 | def test_context(self): |
| 2282 | if self.TYPE == 'processes': |
| 2283 | L = list(range(10)) |
| 2284 | expected = [sqr(i) for i in L] |
Antoine Pitrou | 62b6a0d | 2016-03-15 10:48:28 +0100 | [diff] [blame] | 2285 | with self.Pool(2) as p: |
Richard Oudkerk | d69cfe8 | 2012-06-18 17:47:52 +0100 | [diff] [blame] | 2286 | r = p.map_async(sqr, L) |
| 2287 | self.assertEqual(r.get(), expected) |
Benjamin Peterson | 3095f47 | 2012-09-25 12:45:42 -0400 | [diff] [blame] | 2288 | self.assertRaises(ValueError, p.map_async, sqr, L) |
Richard Oudkerk | d69cfe8 | 2012-06-18 17:47:52 +0100 | [diff] [blame] | 2289 | |
Richard Oudkerk | 8575783 | 2013-05-06 11:38:25 +0100 | [diff] [blame] | 2290 | @classmethod |
| 2291 | def _test_traceback(cls): |
| 2292 | raise RuntimeError(123) # some comment |
| 2293 | |
| 2294 | def test_traceback(self): |
| 2295 | # We want ensure that the traceback from the child process is |
| 2296 | # contained in the traceback raised in the main process. |
| 2297 | if self.TYPE == 'processes': |
| 2298 | with self.Pool(1) as p: |
| 2299 | try: |
| 2300 | p.apply(self._test_traceback) |
| 2301 | except Exception as e: |
| 2302 | exc = e |
| 2303 | else: |
Xiang Zhang | 794623b | 2017-03-29 11:58:54 +0800 | [diff] [blame] | 2304 | self.fail('expected RuntimeError') |
Richard Oudkerk | 8575783 | 2013-05-06 11:38:25 +0100 | [diff] [blame] | 2305 | self.assertIs(type(exc), RuntimeError) |
| 2306 | self.assertEqual(exc.args, (123,)) |
| 2307 | cause = exc.__cause__ |
| 2308 | self.assertIs(type(cause), multiprocessing.pool.RemoteTraceback) |
| 2309 | self.assertIn('raise RuntimeError(123) # some comment', cause.tb) |
| 2310 | |
| 2311 | with test.support.captured_stderr() as f1: |
| 2312 | try: |
| 2313 | raise exc |
| 2314 | except RuntimeError: |
| 2315 | sys.excepthook(*sys.exc_info()) |
| 2316 | self.assertIn('raise RuntimeError(123) # some comment', |
| 2317 | f1.getvalue()) |
Xiang Zhang | 794623b | 2017-03-29 11:58:54 +0800 | [diff] [blame] | 2318 | # _helper_reraises_exception should not make the error |
| 2319 | # a remote exception |
| 2320 | with self.Pool(1) as p: |
| 2321 | try: |
| 2322 | p.map(sqr, exception_throwing_generator(1, -1), 1) |
| 2323 | except Exception as e: |
| 2324 | exc = e |
| 2325 | else: |
| 2326 | self.fail('expected SayWhenError') |
| 2327 | self.assertIs(type(exc), SayWhenError) |
| 2328 | self.assertIs(exc.__cause__, None) |
Richard Oudkerk | 8575783 | 2013-05-06 11:38:25 +0100 | [diff] [blame] | 2329 | |
Richard Oudkerk | 80a5be1 | 2014-03-23 12:30:54 +0000 | [diff] [blame] | 2330 | @classmethod |
| 2331 | def _test_wrapped_exception(cls): |
| 2332 | raise RuntimeError('foo') |
| 2333 | |
| 2334 | def test_wrapped_exception(self): |
| 2335 | # Issue #20980: Should not wrap exception when using thread pool |
| 2336 | with self.Pool(1) as p: |
| 2337 | with self.assertRaises(RuntimeError): |
| 2338 | p.apply(self._test_wrapped_exception) |
| 2339 | |
Charles-François Natali | 78f55ff | 2016-02-10 22:58:18 +0000 | [diff] [blame] | 2340 | def test_map_no_failfast(self): |
| 2341 | # Issue #23992: the fail-fast behaviour when an exception is raised |
| 2342 | # during map() would make Pool.join() deadlock, because a worker |
| 2343 | # process would fill the result queue (after the result handler thread |
| 2344 | # terminated, hence not draining it anymore). |
| 2345 | |
| 2346 | t_start = time.time() |
| 2347 | |
| 2348 | with self.assertRaises(ValueError): |
| 2349 | with self.Pool(2) as p: |
| 2350 | try: |
| 2351 | p.map(raise_large_valuerror, [0, 1]) |
| 2352 | finally: |
| 2353 | time.sleep(0.5) |
| 2354 | p.close() |
| 2355 | p.join() |
| 2356 | |
| 2357 | # check that we indeed waited for all jobs |
| 2358 | self.assertGreater(time.time() - t_start, 0.9) |
| 2359 | |
Antoine Pitrou | 8988945 | 2017-03-24 13:52:11 +0100 | [diff] [blame] | 2360 | def test_release_task_refs(self): |
| 2361 | # Issue #29861: task arguments and results should not be kept |
| 2362 | # alive after we are done with them. |
| 2363 | objs = [CountedObject() for i in range(10)] |
| 2364 | refs = [weakref.ref(o) for o in objs] |
| 2365 | self.pool.map(identity, objs) |
| 2366 | |
| 2367 | del objs |
Antoine Pitrou | 685cdb9 | 2017-04-14 13:10:00 +0200 | [diff] [blame] | 2368 | time.sleep(DELTA) # let threaded cleanup code run |
Antoine Pitrou | 8988945 | 2017-03-24 13:52:11 +0100 | [diff] [blame] | 2369 | self.assertEqual(set(wr() for wr in refs), {None}) |
| 2370 | # With a process pool, copies of the objects are returned, check |
| 2371 | # they were released too. |
| 2372 | self.assertEqual(CountedObject.n_instances, 0) |
| 2373 | |
Richard Oudkerk | 80a5be1 | 2014-03-23 12:30:54 +0000 | [diff] [blame] | 2374 | |
Ask Solem | 2afcbf2 | 2010-11-09 20:55:52 +0000 | [diff] [blame] | 2375 | def raising(): |
| 2376 | raise KeyError("key") |
Jesse Noller | 1f0b658 | 2010-01-27 03:36:01 +0000 | [diff] [blame] | 2377 | |
Ask Solem | 2afcbf2 | 2010-11-09 20:55:52 +0000 | [diff] [blame] | 2378 | def unpickleable_result(): |
| 2379 | return lambda: 42 |
| 2380 | |
| 2381 | class _TestPoolWorkerErrors(BaseTestCase): |
Jesse Noller | 1f0b658 | 2010-01-27 03:36:01 +0000 | [diff] [blame] | 2382 | ALLOWED_TYPES = ('processes', ) |
Ask Solem | 2afcbf2 | 2010-11-09 20:55:52 +0000 | [diff] [blame] | 2383 | |
| 2384 | def test_async_error_callback(self): |
| 2385 | p = multiprocessing.Pool(2) |
| 2386 | |
| 2387 | scratchpad = [None] |
| 2388 | def errback(exc): |
| 2389 | scratchpad[0] = exc |
| 2390 | |
| 2391 | res = p.apply_async(raising, error_callback=errback) |
| 2392 | self.assertRaises(KeyError, res.get) |
| 2393 | self.assertTrue(scratchpad[0]) |
| 2394 | self.assertIsInstance(scratchpad[0], KeyError) |
| 2395 | |
| 2396 | p.close() |
| 2397 | p.join() |
| 2398 | |
| 2399 | def test_unpickleable_result(self): |
| 2400 | from multiprocessing.pool import MaybeEncodingError |
| 2401 | p = multiprocessing.Pool(2) |
| 2402 | |
| 2403 | # Make sure we don't lose pool processes because of encoding errors. |
| 2404 | for iteration in range(20): |
| 2405 | |
| 2406 | scratchpad = [None] |
| 2407 | def errback(exc): |
| 2408 | scratchpad[0] = exc |
| 2409 | |
| 2410 | res = p.apply_async(unpickleable_result, error_callback=errback) |
| 2411 | self.assertRaises(MaybeEncodingError, res.get) |
| 2412 | wrapped = scratchpad[0] |
| 2413 | self.assertTrue(wrapped) |
| 2414 | self.assertIsInstance(scratchpad[0], MaybeEncodingError) |
| 2415 | self.assertIsNotNone(wrapped.exc) |
| 2416 | self.assertIsNotNone(wrapped.value) |
| 2417 | |
| 2418 | p.close() |
| 2419 | p.join() |
| 2420 | |
| 2421 | class _TestPoolWorkerLifetime(BaseTestCase): |
| 2422 | ALLOWED_TYPES = ('processes', ) |
| 2423 | |
Jesse Noller | 1f0b658 | 2010-01-27 03:36:01 +0000 | [diff] [blame] | 2424 | def test_pool_worker_lifetime(self): |
| 2425 | p = multiprocessing.Pool(3, maxtasksperchild=10) |
| 2426 | self.assertEqual(3, len(p._pool)) |
| 2427 | origworkerpids = [w.pid for w in p._pool] |
| 2428 | # Run many tasks so each worker gets replaced (hopefully) |
| 2429 | results = [] |
| 2430 | for i in range(100): |
| 2431 | results.append(p.apply_async(sqr, (i, ))) |
| 2432 | # Fetch the results and verify we got the right answers, |
| 2433 | # also ensuring all the tasks have completed. |
| 2434 | for (j, res) in enumerate(results): |
| 2435 | self.assertEqual(res.get(), sqr(j)) |
| 2436 | # Refill the pool |
| 2437 | p._repopulate_pool() |
Florent Xicluna | fb190f6 | 2010-03-04 16:10:10 +0000 | [diff] [blame] | 2438 | # Wait until all workers are alive |
Antoine Pitrou | 540ab06 | 2011-04-06 22:51:17 +0200 | [diff] [blame] | 2439 | # (countdown * DELTA = 5 seconds max startup process time) |
| 2440 | countdown = 50 |
Florent Xicluna | fb190f6 | 2010-03-04 16:10:10 +0000 | [diff] [blame] | 2441 | while countdown and not all(w.is_alive() for w in p._pool): |
| 2442 | countdown -= 1 |
| 2443 | time.sleep(DELTA) |
Jesse Noller | 1f0b658 | 2010-01-27 03:36:01 +0000 | [diff] [blame] | 2444 | finalworkerpids = [w.pid for w in p._pool] |
Florent Xicluna | fb190f6 | 2010-03-04 16:10:10 +0000 | [diff] [blame] | 2445 | # All pids should be assigned. See issue #7805. |
| 2446 | self.assertNotIn(None, origworkerpids) |
| 2447 | self.assertNotIn(None, finalworkerpids) |
| 2448 | # Finally, check that the worker pids have changed |
Jesse Noller | 1f0b658 | 2010-01-27 03:36:01 +0000 | [diff] [blame] | 2449 | self.assertNotEqual(sorted(origworkerpids), sorted(finalworkerpids)) |
| 2450 | p.close() |
| 2451 | p.join() |
| 2452 | |
Charles-François Natali | f8859e1 | 2011-10-24 18:45:29 +0200 | [diff] [blame] | 2453 | def test_pool_worker_lifetime_early_close(self): |
| 2454 | # Issue #10332: closing a pool whose workers have limited lifetimes |
| 2455 | # before all the tasks completed would make join() hang. |
| 2456 | p = multiprocessing.Pool(3, maxtasksperchild=1) |
| 2457 | results = [] |
| 2458 | for i in range(6): |
| 2459 | results.append(p.apply_async(sqr, (i, 0.3))) |
| 2460 | p.close() |
| 2461 | p.join() |
| 2462 | # check the results |
| 2463 | for (j, res) in enumerate(results): |
| 2464 | self.assertEqual(res.get(), sqr(j)) |
| 2465 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2466 | # |
| 2467 | # Test of creating a customized manager class |
| 2468 | # |
| 2469 | |
| 2470 | from multiprocessing.managers import BaseManager, BaseProxy, RemoteError |
| 2471 | |
| 2472 | class FooBar(object): |
| 2473 | def f(self): |
| 2474 | return 'f()' |
| 2475 | def g(self): |
| 2476 | raise ValueError |
| 2477 | def _h(self): |
| 2478 | return '_h()' |
| 2479 | |
| 2480 | def baz(): |
| 2481 | for i in range(10): |
| 2482 | yield i*i |
| 2483 | |
| 2484 | class IteratorProxy(BaseProxy): |
Florent Xicluna | aa17106 | 2010-08-14 15:56:42 +0000 | [diff] [blame] | 2485 | _exposed_ = ('__next__',) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2486 | def __iter__(self): |
| 2487 | return self |
| 2488 | def __next__(self): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2489 | return self._callmethod('__next__') |
| 2490 | |
| 2491 | class MyManager(BaseManager): |
| 2492 | pass |
| 2493 | |
| 2494 | MyManager.register('Foo', callable=FooBar) |
| 2495 | MyManager.register('Bar', callable=FooBar, exposed=('f', '_h')) |
| 2496 | MyManager.register('baz', callable=baz, proxytype=IteratorProxy) |
| 2497 | |
| 2498 | |
| 2499 | class _TestMyManager(BaseTestCase): |
| 2500 | |
| 2501 | ALLOWED_TYPES = ('manager',) |
| 2502 | |
| 2503 | def test_mymanager(self): |
| 2504 | manager = MyManager() |
| 2505 | manager.start() |
Richard Oudkerk | ac38571 | 2012-06-18 21:29:30 +0100 | [diff] [blame] | 2506 | self.common(manager) |
| 2507 | manager.shutdown() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2508 | |
Richard Oudkerk | ac38571 | 2012-06-18 21:29:30 +0100 | [diff] [blame] | 2509 | # If the manager process exited cleanly then the exitcode |
| 2510 | # will be zero. Otherwise (after a short timeout) |
| 2511 | # terminate() is used, resulting in an exitcode of -SIGTERM. |
| 2512 | self.assertEqual(manager._process.exitcode, 0) |
| 2513 | |
| 2514 | def test_mymanager_context(self): |
| 2515 | with MyManager() as manager: |
| 2516 | self.common(manager) |
| 2517 | self.assertEqual(manager._process.exitcode, 0) |
| 2518 | |
| 2519 | def test_mymanager_context_prestarted(self): |
| 2520 | manager = MyManager() |
| 2521 | manager.start() |
| 2522 | with manager: |
| 2523 | self.common(manager) |
| 2524 | self.assertEqual(manager._process.exitcode, 0) |
| 2525 | |
| 2526 | def common(self, manager): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2527 | foo = manager.Foo() |
| 2528 | bar = manager.Bar() |
| 2529 | baz = manager.baz() |
| 2530 | |
| 2531 | foo_methods = [name for name in ('f', 'g', '_h') if hasattr(foo, name)] |
| 2532 | bar_methods = [name for name in ('f', 'g', '_h') if hasattr(bar, name)] |
| 2533 | |
| 2534 | self.assertEqual(foo_methods, ['f', 'g']) |
| 2535 | self.assertEqual(bar_methods, ['f', '_h']) |
| 2536 | |
| 2537 | self.assertEqual(foo.f(), 'f()') |
| 2538 | self.assertRaises(ValueError, foo.g) |
| 2539 | self.assertEqual(foo._callmethod('f'), 'f()') |
| 2540 | self.assertRaises(RemoteError, foo._callmethod, '_h') |
| 2541 | |
| 2542 | self.assertEqual(bar.f(), 'f()') |
| 2543 | self.assertEqual(bar._h(), '_h()') |
| 2544 | self.assertEqual(bar._callmethod('f'), 'f()') |
| 2545 | self.assertEqual(bar._callmethod('_h'), '_h()') |
| 2546 | |
| 2547 | self.assertEqual(list(baz), [i*i for i in range(10)]) |
| 2548 | |
Richard Oudkerk | 73d9a29 | 2012-06-14 15:30:10 +0100 | [diff] [blame] | 2549 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2550 | # |
| 2551 | # Test of connecting to a remote server and using xmlrpclib for serialization |
| 2552 | # |
| 2553 | |
| 2554 | _queue = pyqueue.Queue() |
| 2555 | def get_queue(): |
| 2556 | return _queue |
| 2557 | |
| 2558 | class QueueManager(BaseManager): |
| 2559 | '''manager class used by server process''' |
| 2560 | QueueManager.register('get_queue', callable=get_queue) |
| 2561 | |
| 2562 | class QueueManager2(BaseManager): |
| 2563 | '''manager class which specifies the same interface as QueueManager''' |
| 2564 | QueueManager2.register('get_queue') |
| 2565 | |
| 2566 | |
| 2567 | SERIALIZER = 'xmlrpclib' |
| 2568 | |
| 2569 | class _TestRemoteManager(BaseTestCase): |
| 2570 | |
| 2571 | ALLOWED_TYPES = ('manager',) |
Serhiy Storchaka | a25c542 | 2015-02-13 15:13:33 +0200 | [diff] [blame] | 2572 | values = ['hello world', None, True, 2.25, |
| 2573 | 'hall\xe5 v\xe4rlden', |
| 2574 | '\u043f\u0440\u0438\u0432\u0456\u0442 \u0441\u0432\u0456\u0442', |
| 2575 | b'hall\xe5 v\xe4rlden', |
| 2576 | ] |
| 2577 | result = values[:] |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2578 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 2579 | @classmethod |
| 2580 | def _putter(cls, address, authkey): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2581 | manager = QueueManager2( |
| 2582 | address=address, authkey=authkey, serializer=SERIALIZER |
| 2583 | ) |
| 2584 | manager.connect() |
| 2585 | queue = manager.get_queue() |
Serhiy Storchaka | a25c542 | 2015-02-13 15:13:33 +0200 | [diff] [blame] | 2586 | # Note that xmlrpclib will deserialize object as a list not a tuple |
| 2587 | queue.put(tuple(cls.values)) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2588 | |
| 2589 | def test_remote(self): |
| 2590 | authkey = os.urandom(32) |
| 2591 | |
| 2592 | manager = QueueManager( |
Antoine Pitrou | f6fbf56 | 2013-08-22 00:39:46 +0200 | [diff] [blame] | 2593 | address=(test.support.HOST, 0), authkey=authkey, serializer=SERIALIZER |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2594 | ) |
| 2595 | manager.start() |
| 2596 | |
| 2597 | p = self.Process(target=self._putter, args=(manager.address, authkey)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 2598 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2599 | p.start() |
| 2600 | |
| 2601 | manager2 = QueueManager2( |
| 2602 | address=manager.address, authkey=authkey, serializer=SERIALIZER |
| 2603 | ) |
| 2604 | manager2.connect() |
| 2605 | queue = manager2.get_queue() |
| 2606 | |
Serhiy Storchaka | a25c542 | 2015-02-13 15:13:33 +0200 | [diff] [blame] | 2607 | self.assertEqual(queue.get(), self.result) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2608 | |
| 2609 | # Because we are using xmlrpclib for serialization instead of |
| 2610 | # pickle this will cause a serialization error. |
| 2611 | self.assertRaises(Exception, queue.put, time.sleep) |
| 2612 | |
| 2613 | # Make queue finalizer run before the server is stopped |
| 2614 | del queue |
| 2615 | manager.shutdown() |
| 2616 | |
Jesse Noller | c5d28a0 | 2009-03-30 16:37:36 +0000 | [diff] [blame] | 2617 | class _TestManagerRestart(BaseTestCase): |
| 2618 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 2619 | @classmethod |
| 2620 | def _putter(cls, address, authkey): |
Jesse Noller | c5d28a0 | 2009-03-30 16:37:36 +0000 | [diff] [blame] | 2621 | manager = QueueManager( |
| 2622 | address=address, authkey=authkey, serializer=SERIALIZER) |
| 2623 | manager.connect() |
| 2624 | queue = manager.get_queue() |
| 2625 | queue.put('hello world') |
| 2626 | |
| 2627 | def test_rapid_restart(self): |
| 2628 | authkey = os.urandom(32) |
| 2629 | manager = QueueManager( |
Antoine Pitrou | f6fbf56 | 2013-08-22 00:39:46 +0200 | [diff] [blame] | 2630 | address=(test.support.HOST, 0), authkey=authkey, serializer=SERIALIZER) |
Brian Curtin | 50be1ca | 2010-11-01 05:10:44 +0000 | [diff] [blame] | 2631 | srvr = manager.get_server() |
| 2632 | addr = srvr.address |
| 2633 | # Close the connection.Listener socket which gets opened as a part |
| 2634 | # of manager.get_server(). It's not needed for the test. |
| 2635 | srvr.listener.close() |
Jesse Noller | c5d28a0 | 2009-03-30 16:37:36 +0000 | [diff] [blame] | 2636 | manager.start() |
| 2637 | |
| 2638 | p = self.Process(target=self._putter, args=(manager.address, authkey)) |
| 2639 | p.start() |
Victor Stinner | 17657bb | 2017-08-16 12:46:04 +0200 | [diff] [blame] | 2640 | p.join() |
Jesse Noller | c5d28a0 | 2009-03-30 16:37:36 +0000 | [diff] [blame] | 2641 | queue = manager.get_queue() |
| 2642 | self.assertEqual(queue.get(), 'hello world') |
Jesse Noller | 35d1f00 | 2009-03-30 22:59:27 +0000 | [diff] [blame] | 2643 | del queue |
Jesse Noller | c5d28a0 | 2009-03-30 16:37:36 +0000 | [diff] [blame] | 2644 | manager.shutdown() |
Victor Stinner | 17657bb | 2017-08-16 12:46:04 +0200 | [diff] [blame] | 2645 | |
Jesse Noller | c5d28a0 | 2009-03-30 16:37:36 +0000 | [diff] [blame] | 2646 | manager = QueueManager( |
Antoine Pitrou | 043bad0 | 2010-04-30 23:20:15 +0000 | [diff] [blame] | 2647 | address=addr, authkey=authkey, serializer=SERIALIZER) |
Antoine Pitrou | c824e9a | 2011-04-05 18:11:33 +0200 | [diff] [blame] | 2648 | try: |
| 2649 | manager.start() |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 2650 | except OSError as e: |
Antoine Pitrou | c824e9a | 2011-04-05 18:11:33 +0200 | [diff] [blame] | 2651 | if e.errno != errno.EADDRINUSE: |
| 2652 | raise |
| 2653 | # Retry after some time, in case the old socket was lingering |
| 2654 | # (sporadic failure on buildbots) |
| 2655 | time.sleep(1.0) |
| 2656 | manager = QueueManager( |
| 2657 | address=addr, authkey=authkey, serializer=SERIALIZER) |
Jesse Noller | 35d1f00 | 2009-03-30 22:59:27 +0000 | [diff] [blame] | 2658 | manager.shutdown() |
Jesse Noller | c5d28a0 | 2009-03-30 16:37:36 +0000 | [diff] [blame] | 2659 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2660 | # |
| 2661 | # |
| 2662 | # |
| 2663 | |
| 2664 | SENTINEL = latin('') |
| 2665 | |
| 2666 | class _TestConnection(BaseTestCase): |
| 2667 | |
| 2668 | ALLOWED_TYPES = ('processes', 'threads') |
| 2669 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 2670 | @classmethod |
| 2671 | def _echo(cls, conn): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2672 | for msg in iter(conn.recv_bytes, SENTINEL): |
| 2673 | conn.send_bytes(msg) |
| 2674 | conn.close() |
| 2675 | |
| 2676 | def test_connection(self): |
| 2677 | conn, child_conn = self.Pipe() |
| 2678 | |
| 2679 | p = self.Process(target=self._echo, args=(child_conn,)) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 2680 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2681 | p.start() |
| 2682 | |
| 2683 | seq = [1, 2.25, None] |
| 2684 | msg = latin('hello world') |
| 2685 | longmsg = msg * 10 |
| 2686 | arr = array.array('i', list(range(4))) |
| 2687 | |
| 2688 | if self.TYPE == 'processes': |
| 2689 | self.assertEqual(type(conn.fileno()), int) |
| 2690 | |
| 2691 | self.assertEqual(conn.send(seq), None) |
| 2692 | self.assertEqual(conn.recv(), seq) |
| 2693 | |
| 2694 | self.assertEqual(conn.send_bytes(msg), None) |
| 2695 | self.assertEqual(conn.recv_bytes(), msg) |
| 2696 | |
| 2697 | if self.TYPE == 'processes': |
| 2698 | buffer = array.array('i', [0]*10) |
| 2699 | expected = list(arr) + [0] * (10 - len(arr)) |
| 2700 | self.assertEqual(conn.send_bytes(arr), None) |
| 2701 | self.assertEqual(conn.recv_bytes_into(buffer), |
| 2702 | len(arr) * buffer.itemsize) |
| 2703 | self.assertEqual(list(buffer), expected) |
| 2704 | |
| 2705 | buffer = array.array('i', [0]*10) |
| 2706 | expected = [0] * 3 + list(arr) + [0] * (10 - 3 - len(arr)) |
| 2707 | self.assertEqual(conn.send_bytes(arr), None) |
| 2708 | self.assertEqual(conn.recv_bytes_into(buffer, 3 * buffer.itemsize), |
| 2709 | len(arr) * buffer.itemsize) |
| 2710 | self.assertEqual(list(buffer), expected) |
| 2711 | |
| 2712 | buffer = bytearray(latin(' ' * 40)) |
| 2713 | self.assertEqual(conn.send_bytes(longmsg), None) |
| 2714 | try: |
| 2715 | res = conn.recv_bytes_into(buffer) |
| 2716 | except multiprocessing.BufferTooShort as e: |
| 2717 | self.assertEqual(e.args, (longmsg,)) |
| 2718 | else: |
| 2719 | self.fail('expected BufferTooShort, got %s' % res) |
| 2720 | |
| 2721 | poll = TimingWrapper(conn.poll) |
| 2722 | |
| 2723 | self.assertEqual(poll(), False) |
| 2724 | self.assertTimingAlmostEqual(poll.elapsed, 0) |
| 2725 | |
Richard Oudkerk | 59d5404 | 2012-05-10 16:11:12 +0100 | [diff] [blame] | 2726 | self.assertEqual(poll(-1), False) |
| 2727 | self.assertTimingAlmostEqual(poll.elapsed, 0) |
| 2728 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2729 | self.assertEqual(poll(TIMEOUT1), False) |
| 2730 | self.assertTimingAlmostEqual(poll.elapsed, TIMEOUT1) |
| 2731 | |
| 2732 | conn.send(None) |
Giampaolo Rodola' | 5e844c8 | 2012-12-31 17:23:09 +0100 | [diff] [blame] | 2733 | time.sleep(.1) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2734 | |
| 2735 | self.assertEqual(poll(TIMEOUT1), True) |
| 2736 | self.assertTimingAlmostEqual(poll.elapsed, 0) |
| 2737 | |
| 2738 | self.assertEqual(conn.recv(), None) |
| 2739 | |
| 2740 | really_big_msg = latin('X') * (1024 * 1024 * 16) # 16Mb |
| 2741 | conn.send_bytes(really_big_msg) |
| 2742 | self.assertEqual(conn.recv_bytes(), really_big_msg) |
| 2743 | |
| 2744 | conn.send_bytes(SENTINEL) # tell child to quit |
| 2745 | child_conn.close() |
| 2746 | |
| 2747 | if self.TYPE == 'processes': |
| 2748 | self.assertEqual(conn.readable, True) |
| 2749 | self.assertEqual(conn.writable, True) |
| 2750 | self.assertRaises(EOFError, conn.recv) |
| 2751 | self.assertRaises(EOFError, conn.recv_bytes) |
| 2752 | |
| 2753 | p.join() |
| 2754 | |
| 2755 | def test_duplex_false(self): |
| 2756 | reader, writer = self.Pipe(duplex=False) |
| 2757 | self.assertEqual(writer.send(1), None) |
| 2758 | self.assertEqual(reader.recv(), 1) |
| 2759 | if self.TYPE == 'processes': |
| 2760 | self.assertEqual(reader.readable, True) |
| 2761 | self.assertEqual(reader.writable, False) |
| 2762 | self.assertEqual(writer.readable, False) |
| 2763 | self.assertEqual(writer.writable, True) |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 2764 | self.assertRaises(OSError, reader.send, 2) |
| 2765 | self.assertRaises(OSError, writer.recv) |
| 2766 | self.assertRaises(OSError, writer.poll) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2767 | |
| 2768 | def test_spawn_close(self): |
| 2769 | # We test that a pipe connection can be closed by parent |
| 2770 | # process immediately after child is spawned. On Windows this |
| 2771 | # would have sometimes failed on old versions because |
| 2772 | # child_conn would be closed before the child got a chance to |
| 2773 | # duplicate it. |
| 2774 | conn, child_conn = self.Pipe() |
| 2775 | |
| 2776 | p = self.Process(target=self._echo, args=(child_conn,)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 2777 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2778 | p.start() |
| 2779 | child_conn.close() # this might complete before child initializes |
| 2780 | |
| 2781 | msg = latin('hello') |
| 2782 | conn.send_bytes(msg) |
| 2783 | self.assertEqual(conn.recv_bytes(), msg) |
| 2784 | |
| 2785 | conn.send_bytes(SENTINEL) |
| 2786 | conn.close() |
| 2787 | p.join() |
| 2788 | |
| 2789 | def test_sendbytes(self): |
| 2790 | if self.TYPE != 'processes': |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 2791 | self.skipTest('test not appropriate for {}'.format(self.TYPE)) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2792 | |
| 2793 | msg = latin('abcdefghijklmnopqrstuvwxyz') |
| 2794 | a, b = self.Pipe() |
| 2795 | |
| 2796 | a.send_bytes(msg) |
| 2797 | self.assertEqual(b.recv_bytes(), msg) |
| 2798 | |
| 2799 | a.send_bytes(msg, 5) |
| 2800 | self.assertEqual(b.recv_bytes(), msg[5:]) |
| 2801 | |
| 2802 | a.send_bytes(msg, 7, 8) |
| 2803 | self.assertEqual(b.recv_bytes(), msg[7:7+8]) |
| 2804 | |
| 2805 | a.send_bytes(msg, 26) |
| 2806 | self.assertEqual(b.recv_bytes(), latin('')) |
| 2807 | |
| 2808 | a.send_bytes(msg, 26, 0) |
| 2809 | self.assertEqual(b.recv_bytes(), latin('')) |
| 2810 | |
| 2811 | self.assertRaises(ValueError, a.send_bytes, msg, 27) |
| 2812 | |
| 2813 | self.assertRaises(ValueError, a.send_bytes, msg, 22, 5) |
| 2814 | |
| 2815 | self.assertRaises(ValueError, a.send_bytes, msg, 26, 1) |
| 2816 | |
| 2817 | self.assertRaises(ValueError, a.send_bytes, msg, -1) |
| 2818 | |
| 2819 | self.assertRaises(ValueError, a.send_bytes, msg, 4, -1) |
| 2820 | |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 2821 | @classmethod |
| 2822 | def _is_fd_assigned(cls, fd): |
| 2823 | try: |
| 2824 | os.fstat(fd) |
| 2825 | except OSError as e: |
| 2826 | if e.errno == errno.EBADF: |
| 2827 | return False |
| 2828 | raise |
| 2829 | else: |
| 2830 | return True |
| 2831 | |
| 2832 | @classmethod |
| 2833 | def _writefd(cls, conn, data, create_dummy_fds=False): |
| 2834 | if create_dummy_fds: |
| 2835 | for i in range(0, 256): |
| 2836 | if not cls._is_fd_assigned(i): |
| 2837 | os.dup2(conn.fileno(), i) |
| 2838 | fd = reduction.recv_handle(conn) |
| 2839 | if msvcrt: |
| 2840 | fd = msvcrt.open_osfhandle(fd, os.O_WRONLY) |
| 2841 | os.write(fd, data) |
| 2842 | os.close(fd) |
| 2843 | |
Charles-François Natali | bc8f082 | 2011-09-20 20:36:51 +0200 | [diff] [blame] | 2844 | @unittest.skipUnless(HAS_REDUCTION, "test needs multiprocessing.reduction") |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 2845 | def test_fd_transfer(self): |
| 2846 | if self.TYPE != 'processes': |
| 2847 | self.skipTest("only makes sense with processes") |
| 2848 | conn, child_conn = self.Pipe(duplex=True) |
| 2849 | |
| 2850 | p = self.Process(target=self._writefd, args=(child_conn, b"foo")) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 2851 | p.daemon = True |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 2852 | p.start() |
Victor Stinner | d0b10a6 | 2011-09-21 01:10:29 +0200 | [diff] [blame] | 2853 | self.addCleanup(test.support.unlink, test.support.TESTFN) |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 2854 | with open(test.support.TESTFN, "wb") as f: |
| 2855 | fd = f.fileno() |
| 2856 | if msvcrt: |
| 2857 | fd = msvcrt.get_osfhandle(fd) |
| 2858 | reduction.send_handle(conn, fd, p.pid) |
| 2859 | p.join() |
| 2860 | with open(test.support.TESTFN, "rb") as f: |
| 2861 | self.assertEqual(f.read(), b"foo") |
| 2862 | |
Charles-François Natali | bc8f082 | 2011-09-20 20:36:51 +0200 | [diff] [blame] | 2863 | @unittest.skipUnless(HAS_REDUCTION, "test needs multiprocessing.reduction") |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 2864 | @unittest.skipIf(sys.platform == "win32", |
| 2865 | "test semantics don't make sense on Windows") |
| 2866 | @unittest.skipIf(MAXFD <= 256, |
| 2867 | "largest assignable fd number is too small") |
| 2868 | @unittest.skipUnless(hasattr(os, "dup2"), |
| 2869 | "test needs os.dup2()") |
| 2870 | def test_large_fd_transfer(self): |
| 2871 | # With fd > 256 (issue #11657) |
| 2872 | if self.TYPE != 'processes': |
| 2873 | self.skipTest("only makes sense with processes") |
| 2874 | conn, child_conn = self.Pipe(duplex=True) |
| 2875 | |
| 2876 | p = self.Process(target=self._writefd, args=(child_conn, b"bar", True)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 2877 | p.daemon = True |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 2878 | p.start() |
Victor Stinner | d0b10a6 | 2011-09-21 01:10:29 +0200 | [diff] [blame] | 2879 | self.addCleanup(test.support.unlink, test.support.TESTFN) |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 2880 | with open(test.support.TESTFN, "wb") as f: |
| 2881 | fd = f.fileno() |
| 2882 | for newfd in range(256, MAXFD): |
| 2883 | if not self._is_fd_assigned(newfd): |
| 2884 | break |
| 2885 | else: |
| 2886 | self.fail("could not find an unassigned large file descriptor") |
| 2887 | os.dup2(fd, newfd) |
| 2888 | try: |
| 2889 | reduction.send_handle(conn, newfd, p.pid) |
| 2890 | finally: |
| 2891 | os.close(newfd) |
| 2892 | p.join() |
| 2893 | with open(test.support.TESTFN, "rb") as f: |
| 2894 | self.assertEqual(f.read(), b"bar") |
| 2895 | |
Jesus Cea | 4507e64 | 2011-09-21 03:53:25 +0200 | [diff] [blame] | 2896 | @classmethod |
| 2897 | def _send_data_without_fd(self, conn): |
| 2898 | os.write(conn.fileno(), b"\0") |
| 2899 | |
Charles-François Natali | e51c8da | 2011-09-21 18:48:21 +0200 | [diff] [blame] | 2900 | @unittest.skipUnless(HAS_REDUCTION, "test needs multiprocessing.reduction") |
Jesus Cea | 4507e64 | 2011-09-21 03:53:25 +0200 | [diff] [blame] | 2901 | @unittest.skipIf(sys.platform == "win32", "doesn't make sense on Windows") |
| 2902 | def test_missing_fd_transfer(self): |
| 2903 | # Check that exception is raised when received data is not |
| 2904 | # accompanied by a file descriptor in ancillary data. |
| 2905 | if self.TYPE != 'processes': |
| 2906 | self.skipTest("only makes sense with processes") |
| 2907 | conn, child_conn = self.Pipe(duplex=True) |
| 2908 | |
| 2909 | p = self.Process(target=self._send_data_without_fd, args=(child_conn,)) |
| 2910 | p.daemon = True |
| 2911 | p.start() |
| 2912 | self.assertRaises(RuntimeError, reduction.recv_handle, conn) |
| 2913 | p.join() |
Antoine Pitrou | bcb39d4 | 2011-08-23 19:46:22 +0200 | [diff] [blame] | 2914 | |
Richard Oudkerk | d69cfe8 | 2012-06-18 17:47:52 +0100 | [diff] [blame] | 2915 | def test_context(self): |
| 2916 | a, b = self.Pipe() |
| 2917 | |
| 2918 | with a, b: |
| 2919 | a.send(1729) |
| 2920 | self.assertEqual(b.recv(), 1729) |
| 2921 | if self.TYPE == 'processes': |
| 2922 | self.assertFalse(a.closed) |
| 2923 | self.assertFalse(b.closed) |
| 2924 | |
| 2925 | if self.TYPE == 'processes': |
| 2926 | self.assertTrue(a.closed) |
| 2927 | self.assertTrue(b.closed) |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 2928 | self.assertRaises(OSError, a.recv) |
| 2929 | self.assertRaises(OSError, b.recv) |
Richard Oudkerk | d69cfe8 | 2012-06-18 17:47:52 +0100 | [diff] [blame] | 2930 | |
Charles-François Natali | ed4a8fc | 2012-02-08 21:15:58 +0100 | [diff] [blame] | 2931 | class _TestListener(BaseTestCase): |
| 2932 | |
Richard Oudkerk | 9125775 | 2012-06-15 21:53:34 +0100 | [diff] [blame] | 2933 | ALLOWED_TYPES = ('processes',) |
Charles-François Natali | ed4a8fc | 2012-02-08 21:15:58 +0100 | [diff] [blame] | 2934 | |
| 2935 | def test_multiple_bind(self): |
| 2936 | for family in self.connection.families: |
| 2937 | l = self.connection.Listener(family=family) |
| 2938 | self.addCleanup(l.close) |
| 2939 | self.assertRaises(OSError, self.connection.Listener, |
| 2940 | l.address, family) |
| 2941 | |
Richard Oudkerk | d69cfe8 | 2012-06-18 17:47:52 +0100 | [diff] [blame] | 2942 | def test_context(self): |
| 2943 | with self.connection.Listener() as l: |
| 2944 | with self.connection.Client(l.address) as c: |
| 2945 | with l.accept() as d: |
| 2946 | c.send(1729) |
| 2947 | self.assertEqual(d.recv(), 1729) |
| 2948 | |
| 2949 | if self.TYPE == 'processes': |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 2950 | self.assertRaises(OSError, l.accept) |
Richard Oudkerk | d69cfe8 | 2012-06-18 17:47:52 +0100 | [diff] [blame] | 2951 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2952 | class _TestListenerClient(BaseTestCase): |
| 2953 | |
| 2954 | ALLOWED_TYPES = ('processes', 'threads') |
| 2955 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 2956 | @classmethod |
| 2957 | def _test(cls, address): |
| 2958 | conn = cls.connection.Client(address) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2959 | conn.send('hello') |
| 2960 | conn.close() |
| 2961 | |
| 2962 | def test_listener_client(self): |
| 2963 | for family in self.connection.families: |
| 2964 | l = self.connection.Listener(family=family) |
| 2965 | p = self.Process(target=self._test, args=(l.address,)) |
Benjamin Peterson | 58ea9fe | 2008-08-19 19:17:39 +0000 | [diff] [blame] | 2966 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 2967 | p.start() |
| 2968 | conn = l.accept() |
| 2969 | self.assertEqual(conn.recv(), 'hello') |
| 2970 | p.join() |
| 2971 | l.close() |
Charles-François Natali | ed4a8fc | 2012-02-08 21:15:58 +0100 | [diff] [blame] | 2972 | |
Richard Oudkerk | fdb8dcf | 2012-05-05 19:45:37 +0100 | [diff] [blame] | 2973 | def test_issue14725(self): |
| 2974 | l = self.connection.Listener() |
| 2975 | p = self.Process(target=self._test, args=(l.address,)) |
| 2976 | p.daemon = True |
| 2977 | p.start() |
| 2978 | time.sleep(1) |
| 2979 | # On Windows the client process should by now have connected, |
| 2980 | # written data and closed the pipe handle by now. This causes |
| 2981 | # ConnectNamdedPipe() to fail with ERROR_NO_DATA. See Issue |
| 2982 | # 14725. |
| 2983 | conn = l.accept() |
| 2984 | self.assertEqual(conn.recv(), 'hello') |
| 2985 | conn.close() |
| 2986 | p.join() |
| 2987 | l.close() |
| 2988 | |
Richard Oudkerk | ed9e06c | 2013-01-13 22:46:48 +0000 | [diff] [blame] | 2989 | def test_issue16955(self): |
| 2990 | for fam in self.connection.families: |
| 2991 | l = self.connection.Listener(family=fam) |
| 2992 | c = self.connection.Client(l.address) |
| 2993 | a = l.accept() |
| 2994 | a.send_bytes(b"hello") |
| 2995 | self.assertTrue(c.poll(1)) |
| 2996 | a.close() |
| 2997 | c.close() |
| 2998 | l.close() |
| 2999 | |
Richard Oudkerk | d15642e | 2013-07-16 15:33:41 +0100 | [diff] [blame] | 3000 | class _TestPoll(BaseTestCase): |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3001 | |
| 3002 | ALLOWED_TYPES = ('processes', 'threads') |
| 3003 | |
| 3004 | def test_empty_string(self): |
| 3005 | a, b = self.Pipe() |
| 3006 | self.assertEqual(a.poll(), False) |
| 3007 | b.send_bytes(b'') |
| 3008 | self.assertEqual(a.poll(), True) |
| 3009 | self.assertEqual(a.poll(), True) |
| 3010 | |
| 3011 | @classmethod |
| 3012 | def _child_strings(cls, conn, strings): |
| 3013 | for s in strings: |
| 3014 | time.sleep(0.1) |
| 3015 | conn.send_bytes(s) |
| 3016 | conn.close() |
| 3017 | |
| 3018 | def test_strings(self): |
| 3019 | strings = (b'hello', b'', b'a', b'b', b'', b'bye', b'', b'lop') |
| 3020 | a, b = self.Pipe() |
| 3021 | p = self.Process(target=self._child_strings, args=(b, strings)) |
| 3022 | p.start() |
| 3023 | |
| 3024 | for s in strings: |
| 3025 | for i in range(200): |
| 3026 | if a.poll(0.01): |
| 3027 | break |
| 3028 | x = a.recv_bytes() |
| 3029 | self.assertEqual(s, x) |
| 3030 | |
| 3031 | p.join() |
| 3032 | |
| 3033 | @classmethod |
| 3034 | def _child_boundaries(cls, r): |
| 3035 | # Polling may "pull" a message in to the child process, but we |
| 3036 | # don't want it to pull only part of a message, as that would |
| 3037 | # corrupt the pipe for any other processes which might later |
| 3038 | # read from it. |
| 3039 | r.poll(5) |
| 3040 | |
| 3041 | def test_boundaries(self): |
| 3042 | r, w = self.Pipe(False) |
| 3043 | p = self.Process(target=self._child_boundaries, args=(r,)) |
| 3044 | p.start() |
| 3045 | time.sleep(2) |
| 3046 | L = [b"first", b"second"] |
| 3047 | for obj in L: |
| 3048 | w.send_bytes(obj) |
| 3049 | w.close() |
| 3050 | p.join() |
| 3051 | self.assertIn(r.recv_bytes(), L) |
| 3052 | |
| 3053 | @classmethod |
| 3054 | def _child_dont_merge(cls, b): |
| 3055 | b.send_bytes(b'a') |
| 3056 | b.send_bytes(b'b') |
| 3057 | b.send_bytes(b'cd') |
| 3058 | |
| 3059 | def test_dont_merge(self): |
| 3060 | a, b = self.Pipe() |
| 3061 | self.assertEqual(a.poll(0.0), False) |
| 3062 | self.assertEqual(a.poll(0.1), False) |
| 3063 | |
| 3064 | p = self.Process(target=self._child_dont_merge, args=(b,)) |
| 3065 | p.start() |
| 3066 | |
| 3067 | self.assertEqual(a.recv_bytes(), b'a') |
| 3068 | self.assertEqual(a.poll(1.0), True) |
| 3069 | self.assertEqual(a.poll(1.0), True) |
| 3070 | self.assertEqual(a.recv_bytes(), b'b') |
| 3071 | self.assertEqual(a.poll(1.0), True) |
| 3072 | self.assertEqual(a.poll(1.0), True) |
| 3073 | self.assertEqual(a.poll(0.0), True) |
| 3074 | self.assertEqual(a.recv_bytes(), b'cd') |
| 3075 | |
| 3076 | p.join() |
| 3077 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3078 | # |
| 3079 | # Test of sending connection and socket objects between processes |
| 3080 | # |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3081 | |
| 3082 | @unittest.skipUnless(HAS_REDUCTION, "test needs multiprocessing.reduction") |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3083 | class _TestPicklingConnections(BaseTestCase): |
| 3084 | |
| 3085 | ALLOWED_TYPES = ('processes',) |
| 3086 | |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3087 | @classmethod |
Antoine Pitrou | 92ff4e1 | 2012-04-27 23:51:03 +0200 | [diff] [blame] | 3088 | def tearDownClass(cls): |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 3089 | from multiprocessing import resource_sharer |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 3090 | resource_sharer.stop(timeout=TIMEOUT) |
Antoine Pitrou | 92ff4e1 | 2012-04-27 23:51:03 +0200 | [diff] [blame] | 3091 | |
| 3092 | @classmethod |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3093 | def _listener(cls, conn, families): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3094 | for fam in families: |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3095 | l = cls.connection.Listener(family=fam) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3096 | conn.send(l.address) |
| 3097 | new_conn = l.accept() |
| 3098 | conn.send(new_conn) |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3099 | new_conn.close() |
| 3100 | l.close() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3101 | |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3102 | l = socket.socket() |
Antoine Pitrou | f6fbf56 | 2013-08-22 00:39:46 +0200 | [diff] [blame] | 3103 | l.bind((test.support.HOST, 0)) |
Charles-François Natali | 6e20460 | 2014-07-23 19:28:13 +0100 | [diff] [blame] | 3104 | l.listen() |
Richard Oudkerk | 5d73c17 | 2012-05-08 22:24:47 +0100 | [diff] [blame] | 3105 | conn.send(l.getsockname()) |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3106 | new_conn, addr = l.accept() |
| 3107 | conn.send(new_conn) |
| 3108 | new_conn.close() |
| 3109 | l.close() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3110 | |
| 3111 | conn.recv() |
| 3112 | |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3113 | @classmethod |
| 3114 | def _remote(cls, conn): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3115 | for (address, msg) in iter(conn.recv, None): |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3116 | client = cls.connection.Client(address) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3117 | client.send(msg.upper()) |
| 3118 | client.close() |
| 3119 | |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3120 | address, msg = conn.recv() |
| 3121 | client = socket.socket() |
| 3122 | client.connect(address) |
| 3123 | client.sendall(msg.upper()) |
| 3124 | client.close() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3125 | |
| 3126 | conn.close() |
| 3127 | |
| 3128 | def test_pickling(self): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3129 | families = self.connection.families |
| 3130 | |
| 3131 | lconn, lconn0 = self.Pipe() |
| 3132 | lp = self.Process(target=self._listener, args=(lconn0, families)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 3133 | lp.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3134 | lp.start() |
| 3135 | lconn0.close() |
| 3136 | |
| 3137 | rconn, rconn0 = self.Pipe() |
| 3138 | rp = self.Process(target=self._remote, args=(rconn0,)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 3139 | rp.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3140 | rp.start() |
| 3141 | rconn0.close() |
| 3142 | |
| 3143 | for fam in families: |
| 3144 | msg = ('This connection uses family %s' % fam).encode('ascii') |
| 3145 | address = lconn.recv() |
| 3146 | rconn.send((address, msg)) |
| 3147 | new_conn = lconn.recv() |
| 3148 | self.assertEqual(new_conn.recv(), msg.upper()) |
| 3149 | |
| 3150 | rconn.send(None) |
| 3151 | |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3152 | msg = latin('This connection uses a normal socket') |
| 3153 | address = lconn.recv() |
| 3154 | rconn.send((address, msg)) |
| 3155 | new_conn = lconn.recv() |
Richard Oudkerk | 4460c34 | 2012-04-30 14:48:50 +0100 | [diff] [blame] | 3156 | buf = [] |
| 3157 | while True: |
| 3158 | s = new_conn.recv(100) |
| 3159 | if not s: |
| 3160 | break |
| 3161 | buf.append(s) |
| 3162 | buf = b''.join(buf) |
| 3163 | self.assertEqual(buf, msg.upper()) |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3164 | new_conn.close() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3165 | |
| 3166 | lconn.send(None) |
| 3167 | |
| 3168 | rconn.close() |
| 3169 | lconn.close() |
| 3170 | |
| 3171 | lp.join() |
| 3172 | rp.join() |
Antoine Pitrou | 5438ed1 | 2012-04-24 22:56:57 +0200 | [diff] [blame] | 3173 | |
| 3174 | @classmethod |
| 3175 | def child_access(cls, conn): |
| 3176 | w = conn.recv() |
| 3177 | w.send('all is well') |
| 3178 | w.close() |
| 3179 | |
| 3180 | r = conn.recv() |
| 3181 | msg = r.recv() |
| 3182 | conn.send(msg*2) |
| 3183 | |
| 3184 | conn.close() |
| 3185 | |
| 3186 | def test_access(self): |
| 3187 | # On Windows, if we do not specify a destination pid when |
| 3188 | # using DupHandle then we need to be careful to use the |
| 3189 | # correct access flags for DuplicateHandle(), or else |
| 3190 | # DupHandle.detach() will raise PermissionError. For example, |
| 3191 | # for a read only pipe handle we should use |
| 3192 | # access=FILE_GENERIC_READ. (Unfortunately |
| 3193 | # DUPLICATE_SAME_ACCESS does not work.) |
| 3194 | conn, child_conn = self.Pipe() |
| 3195 | p = self.Process(target=self.child_access, args=(child_conn,)) |
| 3196 | p.daemon = True |
| 3197 | p.start() |
| 3198 | child_conn.close() |
| 3199 | |
| 3200 | r, w = self.Pipe(duplex=False) |
| 3201 | conn.send(w) |
| 3202 | w.close() |
| 3203 | self.assertEqual(r.recv(), 'all is well') |
| 3204 | r.close() |
| 3205 | |
| 3206 | r, w = self.Pipe(duplex=False) |
| 3207 | conn.send(r) |
| 3208 | r.close() |
| 3209 | w.send('foobar') |
| 3210 | w.close() |
| 3211 | self.assertEqual(conn.recv(), 'foobar'*2) |
| 3212 | |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 3213 | p.join() |
| 3214 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3215 | # |
| 3216 | # |
| 3217 | # |
| 3218 | |
| 3219 | class _TestHeap(BaseTestCase): |
| 3220 | |
| 3221 | ALLOWED_TYPES = ('processes',) |
| 3222 | |
| 3223 | def test_heap(self): |
| 3224 | iterations = 5000 |
| 3225 | maxblocks = 50 |
| 3226 | blocks = [] |
| 3227 | |
| 3228 | # create and destroy lots of blocks of different sizes |
| 3229 | for i in range(iterations): |
| 3230 | size = int(random.lognormvariate(0, 1) * 1000) |
| 3231 | b = multiprocessing.heap.BufferWrapper(size) |
| 3232 | blocks.append(b) |
| 3233 | if len(blocks) > maxblocks: |
| 3234 | i = random.randrange(maxblocks) |
| 3235 | del blocks[i] |
| 3236 | |
| 3237 | # get the heap object |
| 3238 | heap = multiprocessing.heap.BufferWrapper._heap |
| 3239 | |
| 3240 | # verify the state of the heap |
| 3241 | all = [] |
| 3242 | occupied = 0 |
Charles-François Natali | 778db49 | 2011-07-02 14:35:49 +0200 | [diff] [blame] | 3243 | heap._lock.acquire() |
| 3244 | self.addCleanup(heap._lock.release) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3245 | for L in list(heap._len_to_seq.values()): |
| 3246 | for arena, start, stop in L: |
| 3247 | all.append((heap._arenas.index(arena), start, stop, |
| 3248 | stop-start, 'free')) |
| 3249 | for arena, start, stop in heap._allocated_blocks: |
| 3250 | all.append((heap._arenas.index(arena), start, stop, |
| 3251 | stop-start, 'occupied')) |
| 3252 | occupied += (stop-start) |
| 3253 | |
| 3254 | all.sort() |
| 3255 | |
| 3256 | for i in range(len(all)-1): |
| 3257 | (arena, start, stop) = all[i][:3] |
| 3258 | (narena, nstart, nstop) = all[i+1][:3] |
| 3259 | self.assertTrue((arena != narena and nstart == 0) or |
| 3260 | (stop == nstart)) |
| 3261 | |
Charles-François Natali | 778db49 | 2011-07-02 14:35:49 +0200 | [diff] [blame] | 3262 | def test_free_from_gc(self): |
| 3263 | # Check that freeing of blocks by the garbage collector doesn't deadlock |
| 3264 | # (issue #12352). |
| 3265 | # Make sure the GC is enabled, and set lower collection thresholds to |
| 3266 | # make collections more frequent (and increase the probability of |
| 3267 | # deadlock). |
| 3268 | if not gc.isenabled(): |
| 3269 | gc.enable() |
| 3270 | self.addCleanup(gc.disable) |
| 3271 | thresholds = gc.get_threshold() |
| 3272 | self.addCleanup(gc.set_threshold, *thresholds) |
| 3273 | gc.set_threshold(10) |
| 3274 | |
| 3275 | # perform numerous block allocations, with cyclic references to make |
| 3276 | # sure objects are collected asynchronously by the gc |
| 3277 | for i in range(5000): |
| 3278 | a = multiprocessing.heap.BufferWrapper(1) |
| 3279 | b = multiprocessing.heap.BufferWrapper(1) |
| 3280 | # circular references |
| 3281 | a.buddy = b |
| 3282 | b.buddy = a |
| 3283 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3284 | # |
| 3285 | # |
| 3286 | # |
| 3287 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3288 | class _Foo(Structure): |
| 3289 | _fields_ = [ |
| 3290 | ('x', c_int), |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 3291 | ('y', c_double), |
| 3292 | ('z', c_longlong,) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3293 | ] |
| 3294 | |
| 3295 | class _TestSharedCTypes(BaseTestCase): |
| 3296 | |
| 3297 | ALLOWED_TYPES = ('processes',) |
| 3298 | |
Antoine Pitrou | 7744e2a | 2010-11-22 16:26:21 +0000 | [diff] [blame] | 3299 | def setUp(self): |
| 3300 | if not HAS_SHAREDCTYPES: |
| 3301 | self.skipTest("requires multiprocessing.sharedctypes") |
| 3302 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 3303 | @classmethod |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 3304 | def _double(cls, x, y, z, foo, arr, string): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3305 | x.value *= 2 |
| 3306 | y.value *= 2 |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 3307 | z.value *= 2 |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3308 | foo.x *= 2 |
| 3309 | foo.y *= 2 |
| 3310 | string.value *= 2 |
| 3311 | for i in range(len(arr)): |
| 3312 | arr[i] *= 2 |
| 3313 | |
| 3314 | def test_sharedctypes(self, lock=False): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3315 | x = Value('i', 7, lock=lock) |
Georg Brandl | 89fad14 | 2010-03-14 10:23:39 +0000 | [diff] [blame] | 3316 | y = Value(c_double, 1.0/3.0, lock=lock) |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 3317 | z = Value(c_longlong, 2 ** 33, lock=lock) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3318 | foo = Value(_Foo, 3, 2, lock=lock) |
Georg Brandl | 89fad14 | 2010-03-14 10:23:39 +0000 | [diff] [blame] | 3319 | arr = self.Array('d', list(range(10)), lock=lock) |
| 3320 | string = self.Array('c', 20, lock=lock) |
Brian Curtin | afa88b5 | 2010-10-07 01:12:19 +0000 | [diff] [blame] | 3321 | string.value = latin('hello') |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3322 | |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 3323 | p = self.Process(target=self._double, args=(x, y, z, foo, arr, string)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 3324 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3325 | p.start() |
| 3326 | p.join() |
| 3327 | |
| 3328 | self.assertEqual(x.value, 14) |
| 3329 | self.assertAlmostEqual(y.value, 2.0/3.0) |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 3330 | self.assertEqual(z.value, 2 ** 34) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3331 | self.assertEqual(foo.x, 6) |
| 3332 | self.assertAlmostEqual(foo.y, 4.0) |
| 3333 | for i in range(10): |
| 3334 | self.assertAlmostEqual(arr[i], i*2) |
| 3335 | self.assertEqual(string.value, latin('hellohello')) |
| 3336 | |
| 3337 | def test_synchronize(self): |
| 3338 | self.test_sharedctypes(lock=True) |
| 3339 | |
| 3340 | def test_copy(self): |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 3341 | foo = _Foo(2, 5.0, 2 ** 33) |
Brian Curtin | afa88b5 | 2010-10-07 01:12:19 +0000 | [diff] [blame] | 3342 | bar = copy(foo) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3343 | foo.x = 0 |
| 3344 | foo.y = 0 |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 3345 | foo.z = 0 |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3346 | self.assertEqual(bar.x, 2) |
| 3347 | self.assertAlmostEqual(bar.y, 5.0) |
Gareth Rees | 3913bad | 2017-07-21 11:35:33 +0100 | [diff] [blame] | 3348 | self.assertEqual(bar.z, 2 ** 33) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3349 | |
| 3350 | # |
| 3351 | # |
| 3352 | # |
| 3353 | |
| 3354 | class _TestFinalize(BaseTestCase): |
| 3355 | |
| 3356 | ALLOWED_TYPES = ('processes',) |
| 3357 | |
Antoine Pitrou | 1eb6c00 | 2017-06-13 17:10:39 +0200 | [diff] [blame] | 3358 | def setUp(self): |
| 3359 | self.registry_backup = util._finalizer_registry.copy() |
| 3360 | util._finalizer_registry.clear() |
| 3361 | |
| 3362 | def tearDown(self): |
| 3363 | self.assertFalse(util._finalizer_registry) |
| 3364 | util._finalizer_registry.update(self.registry_backup) |
| 3365 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 3366 | @classmethod |
| 3367 | def _test_finalize(cls, conn): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3368 | class Foo(object): |
| 3369 | pass |
| 3370 | |
| 3371 | a = Foo() |
| 3372 | util.Finalize(a, conn.send, args=('a',)) |
| 3373 | del a # triggers callback for a |
| 3374 | |
| 3375 | b = Foo() |
| 3376 | close_b = util.Finalize(b, conn.send, args=('b',)) |
| 3377 | close_b() # triggers callback for b |
| 3378 | close_b() # does nothing because callback has already been called |
| 3379 | del b # does nothing because callback has already been called |
| 3380 | |
| 3381 | c = Foo() |
| 3382 | util.Finalize(c, conn.send, args=('c',)) |
| 3383 | |
| 3384 | d10 = Foo() |
| 3385 | util.Finalize(d10, conn.send, args=('d10',), exitpriority=1) |
| 3386 | |
| 3387 | d01 = Foo() |
| 3388 | util.Finalize(d01, conn.send, args=('d01',), exitpriority=0) |
| 3389 | d02 = Foo() |
| 3390 | util.Finalize(d02, conn.send, args=('d02',), exitpriority=0) |
| 3391 | d03 = Foo() |
| 3392 | util.Finalize(d03, conn.send, args=('d03',), exitpriority=0) |
| 3393 | |
| 3394 | util.Finalize(None, conn.send, args=('e',), exitpriority=-10) |
| 3395 | |
| 3396 | util.Finalize(None, conn.send, args=('STOP',), exitpriority=-100) |
| 3397 | |
Ezio Melotti | 1392500 | 2011-03-16 11:05:33 +0200 | [diff] [blame] | 3398 | # call multiprocessing's cleanup function then exit process without |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3399 | # garbage collecting locals |
| 3400 | util._exit_function() |
| 3401 | conn.close() |
| 3402 | os._exit(0) |
| 3403 | |
| 3404 | def test_finalize(self): |
| 3405 | conn, child_conn = self.Pipe() |
| 3406 | |
| 3407 | p = self.Process(target=self._test_finalize, args=(child_conn,)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 3408 | p.daemon = True |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3409 | p.start() |
| 3410 | p.join() |
| 3411 | |
| 3412 | result = [obj for obj in iter(conn.recv, 'STOP')] |
| 3413 | self.assertEqual(result, ['a', 'b', 'd10', 'd03', 'd02', 'd01', 'e']) |
| 3414 | |
Antoine Pitrou | 1eb6c00 | 2017-06-13 17:10:39 +0200 | [diff] [blame] | 3415 | def test_thread_safety(self): |
| 3416 | # bpo-24484: _run_finalizers() should be thread-safe |
| 3417 | def cb(): |
| 3418 | pass |
| 3419 | |
| 3420 | class Foo(object): |
| 3421 | def __init__(self): |
| 3422 | self.ref = self # create reference cycle |
| 3423 | # insert finalizer at random key |
| 3424 | util.Finalize(self, cb, exitpriority=random.randint(1, 100)) |
| 3425 | |
| 3426 | finish = False |
| 3427 | exc = None |
| 3428 | |
| 3429 | def run_finalizers(): |
| 3430 | nonlocal exc |
| 3431 | while not finish: |
| 3432 | time.sleep(random.random() * 1e-1) |
| 3433 | try: |
| 3434 | # A GC run will eventually happen during this, |
| 3435 | # collecting stale Foo's and mutating the registry |
| 3436 | util._run_finalizers() |
| 3437 | except Exception as e: |
| 3438 | exc = e |
| 3439 | |
| 3440 | def make_finalizers(): |
| 3441 | nonlocal exc |
| 3442 | d = {} |
| 3443 | while not finish: |
| 3444 | try: |
| 3445 | # Old Foo's get gradually replaced and later |
| 3446 | # collected by the GC (because of the cyclic ref) |
| 3447 | d[random.getrandbits(5)] = {Foo() for i in range(10)} |
| 3448 | except Exception as e: |
| 3449 | exc = e |
| 3450 | d.clear() |
| 3451 | |
| 3452 | old_interval = sys.getswitchinterval() |
| 3453 | old_threshold = gc.get_threshold() |
| 3454 | try: |
| 3455 | sys.setswitchinterval(1e-6) |
| 3456 | gc.set_threshold(5, 5, 5) |
| 3457 | threads = [threading.Thread(target=run_finalizers), |
| 3458 | threading.Thread(target=make_finalizers)] |
| 3459 | with test.support.start_threads(threads): |
| 3460 | time.sleep(4.0) # Wait a bit to trigger race condition |
| 3461 | finish = True |
| 3462 | if exc is not None: |
| 3463 | raise exc |
| 3464 | finally: |
| 3465 | sys.setswitchinterval(old_interval) |
| 3466 | gc.set_threshold(*old_threshold) |
| 3467 | gc.collect() # Collect remaining Foo's |
| 3468 | |
| 3469 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3470 | # |
| 3471 | # Test that from ... import * works for each module |
| 3472 | # |
| 3473 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 3474 | class _TestImportStar(unittest.TestCase): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3475 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 3476 | def get_module_names(self): |
| 3477 | import glob |
| 3478 | folder = os.path.dirname(multiprocessing.__file__) |
| 3479 | pattern = os.path.join(folder, '*.py') |
| 3480 | files = glob.glob(pattern) |
| 3481 | modules = [os.path.splitext(os.path.split(f)[1])[0] for f in files] |
| 3482 | modules = ['multiprocessing.' + m for m in modules] |
| 3483 | modules.remove('multiprocessing.__init__') |
| 3484 | modules.append('multiprocessing') |
| 3485 | return modules |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3486 | |
| 3487 | def test_import(self): |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 3488 | modules = self.get_module_names() |
| 3489 | if sys.platform == 'win32': |
| 3490 | modules.remove('multiprocessing.popen_fork') |
| 3491 | modules.remove('multiprocessing.popen_forkserver') |
| 3492 | modules.remove('multiprocessing.popen_spawn_posix') |
| 3493 | else: |
| 3494 | modules.remove('multiprocessing.popen_spawn_win32') |
| 3495 | if not HAS_REDUCTION: |
| 3496 | modules.remove('multiprocessing.popen_forkserver') |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 3497 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 3498 | if c_int is None: |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 3499 | # This module requires _ctypes |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 3500 | modules.remove('multiprocessing.sharedctypes') |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3501 | |
| 3502 | for name in modules: |
| 3503 | __import__(name) |
| 3504 | mod = sys.modules[name] |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 3505 | self.assertTrue(hasattr(mod, '__all__'), name) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3506 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 3507 | for attr in mod.__all__: |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3508 | self.assertTrue( |
| 3509 | hasattr(mod, attr), |
| 3510 | '%r does not have attribute %r' % (mod, attr) |
| 3511 | ) |
| 3512 | |
| 3513 | # |
| 3514 | # Quick test that logging works -- does not test logging output |
| 3515 | # |
| 3516 | |
| 3517 | class _TestLogging(BaseTestCase): |
| 3518 | |
| 3519 | ALLOWED_TYPES = ('processes',) |
| 3520 | |
| 3521 | def test_enable_logging(self): |
| 3522 | logger = multiprocessing.get_logger() |
| 3523 | logger.setLevel(util.SUBWARNING) |
| 3524 | self.assertTrue(logger is not None) |
| 3525 | logger.debug('this will not be printed') |
| 3526 | logger.info('nor will this') |
| 3527 | logger.setLevel(LOG_LEVEL) |
| 3528 | |
Antoine Pitrou | 0d1b38c | 2010-11-02 23:50:11 +0000 | [diff] [blame] | 3529 | @classmethod |
| 3530 | def _test_level(cls, conn): |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3531 | logger = multiprocessing.get_logger() |
| 3532 | conn.send(logger.getEffectiveLevel()) |
| 3533 | |
| 3534 | def test_level(self): |
| 3535 | LEVEL1 = 32 |
| 3536 | LEVEL2 = 37 |
| 3537 | |
| 3538 | logger = multiprocessing.get_logger() |
| 3539 | root_logger = logging.getLogger() |
| 3540 | root_level = root_logger.level |
| 3541 | |
| 3542 | reader, writer = multiprocessing.Pipe(duplex=False) |
| 3543 | |
| 3544 | logger.setLevel(LEVEL1) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 3545 | p = self.Process(target=self._test_level, args=(writer,)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 3546 | p.start() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3547 | self.assertEqual(LEVEL1, reader.recv()) |
Victor Stinner | 0663495 | 2017-07-24 13:02:20 +0200 | [diff] [blame] | 3548 | p.join() |
| 3549 | p.close() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3550 | |
| 3551 | logger.setLevel(logging.NOTSET) |
| 3552 | root_logger.setLevel(LEVEL2) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 3553 | p = self.Process(target=self._test_level, args=(writer,)) |
Jesus Cea | 94f964f | 2011-09-09 20:26:57 +0200 | [diff] [blame] | 3554 | p.start() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3555 | self.assertEqual(LEVEL2, reader.recv()) |
Victor Stinner | 0663495 | 2017-07-24 13:02:20 +0200 | [diff] [blame] | 3556 | p.join() |
| 3557 | p.close() |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3558 | |
| 3559 | root_logger.setLevel(root_level) |
| 3560 | logger.setLevel(level=LOG_LEVEL) |
| 3561 | |
Jesse Noller | b9a49b7 | 2009-11-21 18:09:38 +0000 | [diff] [blame] | 3562 | |
Jesse Noller | f4ae35f | 2009-11-24 14:22:24 +0000 | [diff] [blame] | 3563 | # class _TestLoggingProcessName(BaseTestCase): |
| 3564 | # |
| 3565 | # def handle(self, record): |
| 3566 | # assert record.processName == multiprocessing.current_process().name |
| 3567 | # self.__handled = True |
| 3568 | # |
| 3569 | # def test_logging(self): |
| 3570 | # handler = logging.Handler() |
| 3571 | # handler.handle = self.handle |
| 3572 | # self.__handled = False |
| 3573 | # # Bypass getLogger() and side-effects |
| 3574 | # logger = logging.getLoggerClass()( |
| 3575 | # 'multiprocessing.test.TestLoggingProcessName') |
| 3576 | # logger.addHandler(handler) |
| 3577 | # logger.propagate = False |
| 3578 | # |
| 3579 | # logger.warn('foo') |
| 3580 | # assert self.__handled |
Jesse Noller | b9a49b7 | 2009-11-21 18:09:38 +0000 | [diff] [blame] | 3581 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3582 | # |
Richard Oudkerk | 7aaa1ef | 2013-02-26 12:39:57 +0000 | [diff] [blame] | 3583 | # Check that Process.join() retries if os.waitpid() fails with EINTR |
| 3584 | # |
| 3585 | |
| 3586 | class _TestPollEintr(BaseTestCase): |
| 3587 | |
| 3588 | ALLOWED_TYPES = ('processes',) |
| 3589 | |
| 3590 | @classmethod |
| 3591 | def _killer(cls, pid): |
Richard Oudkerk | 6a53af8 | 2013-08-28 13:50:19 +0100 | [diff] [blame] | 3592 | time.sleep(0.1) |
Richard Oudkerk | 7aaa1ef | 2013-02-26 12:39:57 +0000 | [diff] [blame] | 3593 | os.kill(pid, signal.SIGUSR1) |
| 3594 | |
| 3595 | @unittest.skipUnless(hasattr(signal, 'SIGUSR1'), 'requires SIGUSR1') |
| 3596 | def test_poll_eintr(self): |
| 3597 | got_signal = [False] |
| 3598 | def record(*args): |
| 3599 | got_signal[0] = True |
| 3600 | pid = os.getpid() |
| 3601 | oldhandler = signal.signal(signal.SIGUSR1, record) |
| 3602 | try: |
| 3603 | killer = self.Process(target=self._killer, args=(pid,)) |
| 3604 | killer.start() |
Richard Oudkerk | 6a53af8 | 2013-08-28 13:50:19 +0100 | [diff] [blame] | 3605 | try: |
| 3606 | p = self.Process(target=time.sleep, args=(2,)) |
| 3607 | p.start() |
| 3608 | p.join() |
| 3609 | finally: |
| 3610 | killer.join() |
Richard Oudkerk | 7aaa1ef | 2013-02-26 12:39:57 +0000 | [diff] [blame] | 3611 | self.assertTrue(got_signal[0]) |
| 3612 | self.assertEqual(p.exitcode, 0) |
Richard Oudkerk | 7aaa1ef | 2013-02-26 12:39:57 +0000 | [diff] [blame] | 3613 | finally: |
| 3614 | signal.signal(signal.SIGUSR1, oldhandler) |
| 3615 | |
| 3616 | # |
Jesse Noller | 6214edd | 2009-01-19 16:23:53 +0000 | [diff] [blame] | 3617 | # Test to verify handle verification, see issue 3321 |
| 3618 | # |
| 3619 | |
| 3620 | class TestInvalidHandle(unittest.TestCase): |
| 3621 | |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 3622 | @unittest.skipIf(WIN32, "skipped on Windows") |
Jesse Noller | 6214edd | 2009-01-19 16:23:53 +0000 | [diff] [blame] | 3623 | def test_invalid_handles(self): |
Antoine Pitrou | 87cf220 | 2011-05-09 17:04:27 +0200 | [diff] [blame] | 3624 | conn = multiprocessing.connection.Connection(44977608) |
Charles-François Natali | 6703bb4 | 2013-09-06 21:12:22 +0200 | [diff] [blame] | 3625 | # check that poll() doesn't crash |
Antoine Pitrou | 87cf220 | 2011-05-09 17:04:27 +0200 | [diff] [blame] | 3626 | try: |
Charles-François Natali | 6703bb4 | 2013-09-06 21:12:22 +0200 | [diff] [blame] | 3627 | conn.poll() |
| 3628 | except (ValueError, OSError): |
| 3629 | pass |
Antoine Pitrou | 87cf220 | 2011-05-09 17:04:27 +0200 | [diff] [blame] | 3630 | finally: |
| 3631 | # Hack private attribute _handle to avoid printing an error |
| 3632 | # in conn.__del__ |
| 3633 | conn._handle = None |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 3634 | self.assertRaises((ValueError, OSError), |
Antoine Pitrou | 87cf220 | 2011-05-09 17:04:27 +0200 | [diff] [blame] | 3635 | multiprocessing.connection.Connection, -1) |
Florent Xicluna | fd1b093 | 2010-03-28 00:25:02 +0000 | [diff] [blame] | 3636 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 3637 | |
Richard Oudkerk | fc7b0ec | 2012-10-08 14:56:24 +0100 | [diff] [blame] | 3638 | |
Neal Norwitz | 5d6415e | 2008-08-25 01:53:32 +0000 | [diff] [blame] | 3639 | class OtherTest(unittest.TestCase): |
| 3640 | # TODO: add more tests for deliver/answer challenge. |
| 3641 | def test_deliver_challenge_auth_failure(self): |
| 3642 | class _FakeConnection(object): |
| 3643 | def recv_bytes(self, size): |
Neal Norwitz | ec105ad | 2008-08-25 03:05:54 +0000 | [diff] [blame] | 3644 | return b'something bogus' |
Neal Norwitz | 5d6415e | 2008-08-25 01:53:32 +0000 | [diff] [blame] | 3645 | def send_bytes(self, data): |
| 3646 | pass |
| 3647 | self.assertRaises(multiprocessing.AuthenticationError, |
| 3648 | multiprocessing.connection.deliver_challenge, |
| 3649 | _FakeConnection(), b'abc') |
| 3650 | |
| 3651 | def test_answer_challenge_auth_failure(self): |
| 3652 | class _FakeConnection(object): |
| 3653 | def __init__(self): |
| 3654 | self.count = 0 |
| 3655 | def recv_bytes(self, size): |
| 3656 | self.count += 1 |
| 3657 | if self.count == 1: |
| 3658 | return multiprocessing.connection.CHALLENGE |
| 3659 | elif self.count == 2: |
Neal Norwitz | ec105ad | 2008-08-25 03:05:54 +0000 | [diff] [blame] | 3660 | return b'something bogus' |
| 3661 | return b'' |
Neal Norwitz | 5d6415e | 2008-08-25 01:53:32 +0000 | [diff] [blame] | 3662 | def send_bytes(self, data): |
| 3663 | pass |
| 3664 | self.assertRaises(multiprocessing.AuthenticationError, |
| 3665 | multiprocessing.connection.answer_challenge, |
| 3666 | _FakeConnection(), b'abc') |
| 3667 | |
Benjamin Peterson | f47ed4a | 2009-04-11 20:45:40 +0000 | [diff] [blame] | 3668 | # |
| 3669 | # Test Manager.start()/Pool.__init__() initializer feature - see issue 5585 |
| 3670 | # |
| 3671 | |
| 3672 | def initializer(ns): |
| 3673 | ns.test += 1 |
| 3674 | |
| 3675 | class TestInitializers(unittest.TestCase): |
| 3676 | def setUp(self): |
| 3677 | self.mgr = multiprocessing.Manager() |
| 3678 | self.ns = self.mgr.Namespace() |
| 3679 | self.ns.test = 0 |
| 3680 | |
| 3681 | def tearDown(self): |
| 3682 | self.mgr.shutdown() |
Richard Oudkerk | a6becaa | 2012-05-03 18:29:02 +0100 | [diff] [blame] | 3683 | self.mgr.join() |
Benjamin Peterson | f47ed4a | 2009-04-11 20:45:40 +0000 | [diff] [blame] | 3684 | |
| 3685 | def test_manager_initializer(self): |
| 3686 | m = multiprocessing.managers.SyncManager() |
| 3687 | self.assertRaises(TypeError, m.start, 1) |
| 3688 | m.start(initializer, (self.ns,)) |
| 3689 | self.assertEqual(self.ns.test, 1) |
| 3690 | m.shutdown() |
Richard Oudkerk | a6becaa | 2012-05-03 18:29:02 +0100 | [diff] [blame] | 3691 | m.join() |
Benjamin Peterson | f47ed4a | 2009-04-11 20:45:40 +0000 | [diff] [blame] | 3692 | |
| 3693 | def test_pool_initializer(self): |
| 3694 | self.assertRaises(TypeError, multiprocessing.Pool, initializer=1) |
| 3695 | p = multiprocessing.Pool(1, initializer, (self.ns,)) |
| 3696 | p.close() |
| 3697 | p.join() |
| 3698 | self.assertEqual(self.ns.test, 1) |
| 3699 | |
Alexandre Vassalotti | c57a84f | 2009-07-17 12:07:01 +0000 | [diff] [blame] | 3700 | # |
| 3701 | # Issue 5155, 5313, 5331: Test process in processes |
| 3702 | # Verifies os.close(sys.stdin.fileno) vs. sys.stdin.close() behavior |
| 3703 | # |
| 3704 | |
Richard Oudkerk | 8b3f5aa | 2013-09-29 17:29:56 +0100 | [diff] [blame] | 3705 | def _this_sub_process(q): |
Alexandre Vassalotti | c57a84f | 2009-07-17 12:07:01 +0000 | [diff] [blame] | 3706 | try: |
| 3707 | item = q.get(block=False) |
| 3708 | except pyqueue.Empty: |
| 3709 | pass |
| 3710 | |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 3711 | def _test_process(): |
Richard Oudkerk | 8b3f5aa | 2013-09-29 17:29:56 +0100 | [diff] [blame] | 3712 | queue = multiprocessing.Queue() |
| 3713 | subProc = multiprocessing.Process(target=_this_sub_process, args=(queue,)) |
| 3714 | subProc.daemon = True |
| 3715 | subProc.start() |
| 3716 | subProc.join() |
| 3717 | |
Alexandre Vassalotti | c57a84f | 2009-07-17 12:07:01 +0000 | [diff] [blame] | 3718 | def _afunc(x): |
| 3719 | return x*x |
| 3720 | |
| 3721 | def pool_in_process(): |
| 3722 | pool = multiprocessing.Pool(processes=4) |
| 3723 | x = pool.map(_afunc, [1, 2, 3, 4, 5, 6, 7]) |
Richard Oudkerk | 225cb8d | 2012-05-02 19:36:11 +0100 | [diff] [blame] | 3724 | pool.close() |
| 3725 | pool.join() |
Alexandre Vassalotti | c57a84f | 2009-07-17 12:07:01 +0000 | [diff] [blame] | 3726 | |
| 3727 | class _file_like(object): |
| 3728 | def __init__(self, delegate): |
| 3729 | self._delegate = delegate |
| 3730 | self._pid = None |
| 3731 | |
| 3732 | @property |
| 3733 | def cache(self): |
| 3734 | pid = os.getpid() |
| 3735 | # There are no race conditions since fork keeps only the running thread |
| 3736 | if pid != self._pid: |
| 3737 | self._pid = pid |
| 3738 | self._cache = [] |
| 3739 | return self._cache |
| 3740 | |
| 3741 | def write(self, data): |
| 3742 | self.cache.append(data) |
| 3743 | |
| 3744 | def flush(self): |
| 3745 | self._delegate.write(''.join(self.cache)) |
| 3746 | self._cache = [] |
| 3747 | |
| 3748 | class TestStdinBadfiledescriptor(unittest.TestCase): |
| 3749 | |
| 3750 | def test_queue_in_process(self): |
Victor Stinner | b4c5296 | 2017-07-25 02:40:55 +0200 | [diff] [blame] | 3751 | proc = multiprocessing.Process(target=_test_process) |
Alexandre Vassalotti | c57a84f | 2009-07-17 12:07:01 +0000 | [diff] [blame] | 3752 | proc.start() |
| 3753 | proc.join() |
| 3754 | |
| 3755 | def test_pool_in_process(self): |
| 3756 | p = multiprocessing.Process(target=pool_in_process) |
| 3757 | p.start() |
| 3758 | p.join() |
| 3759 | |
| 3760 | def test_flushing(self): |
| 3761 | sio = io.StringIO() |
| 3762 | flike = _file_like(sio) |
| 3763 | flike.write('foo') |
| 3764 | proc = multiprocessing.Process(target=lambda: flike.flush()) |
| 3765 | flike.flush() |
| 3766 | assert sio.getvalue() == 'foo' |
| 3767 | |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3768 | |
| 3769 | class TestWait(unittest.TestCase): |
| 3770 | |
| 3771 | @classmethod |
| 3772 | def _child_test_wait(cls, w, slow): |
| 3773 | for i in range(10): |
| 3774 | if slow: |
| 3775 | time.sleep(random.random()*0.1) |
| 3776 | w.send((i, os.getpid())) |
| 3777 | w.close() |
| 3778 | |
| 3779 | def test_wait(self, slow=False): |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3780 | from multiprocessing.connection import wait |
| 3781 | readers = [] |
| 3782 | procs = [] |
| 3783 | messages = [] |
| 3784 | |
| 3785 | for i in range(4): |
Antoine Pitrou | 5bb9a8f | 2012-03-06 13:43:24 +0100 | [diff] [blame] | 3786 | r, w = multiprocessing.Pipe(duplex=False) |
| 3787 | p = multiprocessing.Process(target=self._child_test_wait, args=(w, slow)) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3788 | p.daemon = True |
| 3789 | p.start() |
| 3790 | w.close() |
| 3791 | readers.append(r) |
| 3792 | procs.append(p) |
Antoine Pitrou | 6c64cc1 | 2012-03-06 13:42:35 +0100 | [diff] [blame] | 3793 | self.addCleanup(p.join) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3794 | |
| 3795 | while readers: |
| 3796 | for r in wait(readers): |
| 3797 | try: |
| 3798 | msg = r.recv() |
| 3799 | except EOFError: |
| 3800 | readers.remove(r) |
| 3801 | r.close() |
| 3802 | else: |
| 3803 | messages.append(msg) |
| 3804 | |
| 3805 | messages.sort() |
| 3806 | expected = sorted((i, p.pid) for i in range(10) for p in procs) |
| 3807 | self.assertEqual(messages, expected) |
| 3808 | |
| 3809 | @classmethod |
| 3810 | def _child_test_wait_socket(cls, address, slow): |
| 3811 | s = socket.socket() |
| 3812 | s.connect(address) |
| 3813 | for i in range(10): |
| 3814 | if slow: |
| 3815 | time.sleep(random.random()*0.1) |
| 3816 | s.sendall(('%s\n' % i).encode('ascii')) |
| 3817 | s.close() |
| 3818 | |
| 3819 | def test_wait_socket(self, slow=False): |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3820 | from multiprocessing.connection import wait |
| 3821 | l = socket.socket() |
Antoine Pitrou | f6fbf56 | 2013-08-22 00:39:46 +0200 | [diff] [blame] | 3822 | l.bind((test.support.HOST, 0)) |
Charles-François Natali | 6e20460 | 2014-07-23 19:28:13 +0100 | [diff] [blame] | 3823 | l.listen() |
Antoine Pitrou | f6fbf56 | 2013-08-22 00:39:46 +0200 | [diff] [blame] | 3824 | addr = l.getsockname() |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3825 | readers = [] |
| 3826 | procs = [] |
| 3827 | dic = {} |
| 3828 | |
| 3829 | for i in range(4): |
Antoine Pitrou | 5bb9a8f | 2012-03-06 13:43:24 +0100 | [diff] [blame] | 3830 | p = multiprocessing.Process(target=self._child_test_wait_socket, |
| 3831 | args=(addr, slow)) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3832 | p.daemon = True |
| 3833 | p.start() |
| 3834 | procs.append(p) |
Antoine Pitrou | 6c64cc1 | 2012-03-06 13:42:35 +0100 | [diff] [blame] | 3835 | self.addCleanup(p.join) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3836 | |
| 3837 | for i in range(4): |
| 3838 | r, _ = l.accept() |
| 3839 | readers.append(r) |
| 3840 | dic[r] = [] |
| 3841 | l.close() |
| 3842 | |
| 3843 | while readers: |
| 3844 | for r in wait(readers): |
| 3845 | msg = r.recv(32) |
| 3846 | if not msg: |
| 3847 | readers.remove(r) |
| 3848 | r.close() |
| 3849 | else: |
| 3850 | dic[r].append(msg) |
| 3851 | |
| 3852 | expected = ''.join('%s\n' % i for i in range(10)).encode('ascii') |
| 3853 | for v in dic.values(): |
| 3854 | self.assertEqual(b''.join(v), expected) |
| 3855 | |
| 3856 | def test_wait_slow(self): |
| 3857 | self.test_wait(True) |
| 3858 | |
| 3859 | def test_wait_socket_slow(self): |
Richard Oudkerk | 104b3f4 | 2012-05-08 16:08:07 +0100 | [diff] [blame] | 3860 | self.test_wait_socket(True) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3861 | |
| 3862 | def test_wait_timeout(self): |
| 3863 | from multiprocessing.connection import wait |
| 3864 | |
Richard Oudkerk | 009b15e | 2012-05-04 09:44:39 +0100 | [diff] [blame] | 3865 | expected = 5 |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3866 | a, b = multiprocessing.Pipe() |
| 3867 | |
| 3868 | start = time.time() |
Richard Oudkerk | 009b15e | 2012-05-04 09:44:39 +0100 | [diff] [blame] | 3869 | res = wait([a, b], expected) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3870 | delta = time.time() - start |
| 3871 | |
| 3872 | self.assertEqual(res, []) |
Richard Oudkerk | 6dbca36 | 2012-05-06 16:46:36 +0100 | [diff] [blame] | 3873 | self.assertLess(delta, expected * 2) |
| 3874 | self.assertGreater(delta, expected * 0.5) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3875 | |
| 3876 | b.send(None) |
| 3877 | |
| 3878 | start = time.time() |
Richard Oudkerk | 009b15e | 2012-05-04 09:44:39 +0100 | [diff] [blame] | 3879 | res = wait([a, b], 20) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3880 | delta = time.time() - start |
| 3881 | |
| 3882 | self.assertEqual(res, [a]) |
Antoine Pitrou | 3774977 | 2012-03-09 18:40:15 +0100 | [diff] [blame] | 3883 | self.assertLess(delta, 0.4) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3884 | |
Richard Oudkerk | 009b15e | 2012-05-04 09:44:39 +0100 | [diff] [blame] | 3885 | @classmethod |
| 3886 | def signal_and_sleep(cls, sem, period): |
| 3887 | sem.release() |
| 3888 | time.sleep(period) |
| 3889 | |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3890 | def test_wait_integer(self): |
| 3891 | from multiprocessing.connection import wait |
| 3892 | |
Richard Oudkerk | 009b15e | 2012-05-04 09:44:39 +0100 | [diff] [blame] | 3893 | expected = 3 |
Giampaolo Rodola' | 0c8ad61 | 2013-01-14 02:24:05 +0100 | [diff] [blame] | 3894 | sorted_ = lambda l: sorted(l, key=lambda x: id(x)) |
Richard Oudkerk | 009b15e | 2012-05-04 09:44:39 +0100 | [diff] [blame] | 3895 | sem = multiprocessing.Semaphore(0) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3896 | a, b = multiprocessing.Pipe() |
Richard Oudkerk | 009b15e | 2012-05-04 09:44:39 +0100 | [diff] [blame] | 3897 | p = multiprocessing.Process(target=self.signal_and_sleep, |
| 3898 | args=(sem, expected)) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3899 | |
| 3900 | p.start() |
| 3901 | self.assertIsInstance(p.sentinel, int) |
Richard Oudkerk | 009b15e | 2012-05-04 09:44:39 +0100 | [diff] [blame] | 3902 | self.assertTrue(sem.acquire(timeout=20)) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3903 | |
| 3904 | start = time.time() |
| 3905 | res = wait([a, p.sentinel, b], expected + 20) |
| 3906 | delta = time.time() - start |
| 3907 | |
| 3908 | self.assertEqual(res, [p.sentinel]) |
Antoine Pitrou | 3774977 | 2012-03-09 18:40:15 +0100 | [diff] [blame] | 3909 | self.assertLess(delta, expected + 2) |
| 3910 | self.assertGreater(delta, expected - 2) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3911 | |
| 3912 | a.send(None) |
| 3913 | |
| 3914 | start = time.time() |
| 3915 | res = wait([a, p.sentinel, b], 20) |
| 3916 | delta = time.time() - start |
| 3917 | |
Giampaolo Rodola' | 5051ca8 | 2012-12-31 17:38:17 +0100 | [diff] [blame] | 3918 | self.assertEqual(sorted_(res), sorted_([p.sentinel, b])) |
Antoine Pitrou | 3774977 | 2012-03-09 18:40:15 +0100 | [diff] [blame] | 3919 | self.assertLess(delta, 0.4) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3920 | |
| 3921 | b.send(None) |
| 3922 | |
| 3923 | start = time.time() |
| 3924 | res = wait([a, p.sentinel, b], 20) |
| 3925 | delta = time.time() - start |
| 3926 | |
Giampaolo Rodola' | 5051ca8 | 2012-12-31 17:38:17 +0100 | [diff] [blame] | 3927 | self.assertEqual(sorted_(res), sorted_([a, p.sentinel, b])) |
Antoine Pitrou | 3774977 | 2012-03-09 18:40:15 +0100 | [diff] [blame] | 3928 | self.assertLess(delta, 0.4) |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3929 | |
Richard Oudkerk | 009b15e | 2012-05-04 09:44:39 +0100 | [diff] [blame] | 3930 | p.terminate() |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3931 | p.join() |
| 3932 | |
Richard Oudkerk | 59d5404 | 2012-05-10 16:11:12 +0100 | [diff] [blame] | 3933 | def test_neg_timeout(self): |
| 3934 | from multiprocessing.connection import wait |
| 3935 | a, b = multiprocessing.Pipe() |
| 3936 | t = time.time() |
| 3937 | res = wait([a], timeout=-1) |
| 3938 | t = time.time() - t |
| 3939 | self.assertEqual(res, []) |
| 3940 | self.assertLess(t, 1) |
| 3941 | a.close() |
| 3942 | b.close() |
Antoine Pitrou | bdb1cf1 | 2012-03-05 19:28:37 +0100 | [diff] [blame] | 3943 | |
Antoine Pitrou | 709176f | 2012-04-01 17:19:09 +0200 | [diff] [blame] | 3944 | # |
| 3945 | # Issue 14151: Test invalid family on invalid environment |
| 3946 | # |
| 3947 | |
| 3948 | class TestInvalidFamily(unittest.TestCase): |
| 3949 | |
| 3950 | @unittest.skipIf(WIN32, "skipped on Windows") |
| 3951 | def test_invalid_family(self): |
| 3952 | with self.assertRaises(ValueError): |
| 3953 | multiprocessing.connection.Listener(r'\\.\test') |
| 3954 | |
Antoine Pitrou | 6d20cba | 2012-04-03 20:12:23 +0200 | [diff] [blame] | 3955 | @unittest.skipUnless(WIN32, "skipped on non-Windows platforms") |
| 3956 | def test_invalid_family_win32(self): |
| 3957 | with self.assertRaises(ValueError): |
| 3958 | multiprocessing.connection.Listener('/var/test.pipe') |
Antoine Pitrou | 93bba8f | 2012-04-01 17:25:49 +0200 | [diff] [blame] | 3959 | |
Richard Oudkerk | 77c84f2 | 2012-05-18 14:28:02 +0100 | [diff] [blame] | 3960 | # |
| 3961 | # Issue 12098: check sys.flags of child matches that for parent |
| 3962 | # |
| 3963 | |
| 3964 | class TestFlags(unittest.TestCase): |
| 3965 | @classmethod |
| 3966 | def run_in_grandchild(cls, conn): |
| 3967 | conn.send(tuple(sys.flags)) |
| 3968 | |
| 3969 | @classmethod |
| 3970 | def run_in_child(cls): |
| 3971 | import json |
| 3972 | r, w = multiprocessing.Pipe(duplex=False) |
| 3973 | p = multiprocessing.Process(target=cls.run_in_grandchild, args=(w,)) |
| 3974 | p.start() |
| 3975 | grandchild_flags = r.recv() |
| 3976 | p.join() |
| 3977 | r.close() |
| 3978 | w.close() |
| 3979 | flags = (tuple(sys.flags), grandchild_flags) |
| 3980 | print(json.dumps(flags)) |
| 3981 | |
| 3982 | def test_flags(self): |
| 3983 | import json, subprocess |
| 3984 | # start child process using unusual flags |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 3985 | prog = ('from test._test_multiprocessing import TestFlags; ' + |
Richard Oudkerk | 77c84f2 | 2012-05-18 14:28:02 +0100 | [diff] [blame] | 3986 | 'TestFlags.run_in_child()') |
| 3987 | data = subprocess.check_output( |
| 3988 | [sys.executable, '-E', '-S', '-O', '-c', prog]) |
| 3989 | child_flags, grandchild_flags = json.loads(data.decode('ascii')) |
| 3990 | self.assertEqual(child_flags, grandchild_flags) |
| 3991 | |
Richard Oudkerk | b15e622 | 2012-07-27 14:19:00 +0100 | [diff] [blame] | 3992 | # |
| 3993 | # Test interaction with socket timeouts - see Issue #6056 |
| 3994 | # |
| 3995 | |
| 3996 | class TestTimeouts(unittest.TestCase): |
| 3997 | @classmethod |
| 3998 | def _test_timeout(cls, child, address): |
| 3999 | time.sleep(1) |
| 4000 | child.send(123) |
| 4001 | child.close() |
| 4002 | conn = multiprocessing.connection.Client(address) |
| 4003 | conn.send(456) |
| 4004 | conn.close() |
| 4005 | |
| 4006 | def test_timeout(self): |
| 4007 | old_timeout = socket.getdefaulttimeout() |
| 4008 | try: |
| 4009 | socket.setdefaulttimeout(0.1) |
| 4010 | parent, child = multiprocessing.Pipe(duplex=True) |
| 4011 | l = multiprocessing.connection.Listener(family='AF_INET') |
| 4012 | p = multiprocessing.Process(target=self._test_timeout, |
| 4013 | args=(child, l.address)) |
| 4014 | p.start() |
| 4015 | child.close() |
| 4016 | self.assertEqual(parent.recv(), 123) |
| 4017 | parent.close() |
| 4018 | conn = l.accept() |
| 4019 | self.assertEqual(conn.recv(), 456) |
| 4020 | conn.close() |
| 4021 | l.close() |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 4022 | join_process(p) |
Richard Oudkerk | b15e622 | 2012-07-27 14:19:00 +0100 | [diff] [blame] | 4023 | finally: |
| 4024 | socket.setdefaulttimeout(old_timeout) |
| 4025 | |
Richard Oudkerk | e88a244 | 2012-08-14 11:41:32 +0100 | [diff] [blame] | 4026 | # |
| 4027 | # Test what happens with no "if __name__ == '__main__'" |
| 4028 | # |
| 4029 | |
| 4030 | class TestNoForkBomb(unittest.TestCase): |
| 4031 | def test_noforkbomb(self): |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4032 | sm = multiprocessing.get_start_method() |
Richard Oudkerk | e88a244 | 2012-08-14 11:41:32 +0100 | [diff] [blame] | 4033 | name = os.path.join(os.path.dirname(__file__), 'mp_fork_bomb.py') |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4034 | if sm != 'fork': |
Berker Peksag | 076dbd0 | 2015-05-06 07:01:52 +0300 | [diff] [blame] | 4035 | rc, out, err = test.support.script_helper.assert_python_failure(name, sm) |
Serhiy Storchaka | a25c542 | 2015-02-13 15:13:33 +0200 | [diff] [blame] | 4036 | self.assertEqual(out, b'') |
| 4037 | self.assertIn(b'RuntimeError', err) |
Richard Oudkerk | e88a244 | 2012-08-14 11:41:32 +0100 | [diff] [blame] | 4038 | else: |
Berker Peksag | 076dbd0 | 2015-05-06 07:01:52 +0300 | [diff] [blame] | 4039 | rc, out, err = test.support.script_helper.assert_python_ok(name, sm) |
Serhiy Storchaka | a25c542 | 2015-02-13 15:13:33 +0200 | [diff] [blame] | 4040 | self.assertEqual(out.rstrip(), b'123') |
| 4041 | self.assertEqual(err, b'') |
Richard Oudkerk | e88a244 | 2012-08-14 11:41:32 +0100 | [diff] [blame] | 4042 | |
| 4043 | # |
Richard Oudkerk | 409c313 | 2013-04-17 20:58:00 +0100 | [diff] [blame] | 4044 | # Issue #17555: ForkAwareThreadLock |
| 4045 | # |
| 4046 | |
| 4047 | class TestForkAwareThreadLock(unittest.TestCase): |
| 4048 | # We recurisvely start processes. Issue #17555 meant that the |
| 4049 | # after fork registry would get duplicate entries for the same |
| 4050 | # lock. The size of the registry at generation n was ~2**n. |
| 4051 | |
| 4052 | @classmethod |
| 4053 | def child(cls, n, conn): |
| 4054 | if n > 1: |
| 4055 | p = multiprocessing.Process(target=cls.child, args=(n-1, conn)) |
| 4056 | p.start() |
Richard Oudkerk | a01fb39 | 2013-08-21 19:45:19 +0100 | [diff] [blame] | 4057 | conn.close() |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 4058 | join_process(p) |
Richard Oudkerk | 409c313 | 2013-04-17 20:58:00 +0100 | [diff] [blame] | 4059 | else: |
| 4060 | conn.send(len(util._afterfork_registry)) |
| 4061 | conn.close() |
| 4062 | |
| 4063 | def test_lock(self): |
| 4064 | r, w = multiprocessing.Pipe(False) |
| 4065 | l = util.ForkAwareThreadLock() |
| 4066 | old_size = len(util._afterfork_registry) |
| 4067 | p = multiprocessing.Process(target=self.child, args=(5, w)) |
| 4068 | p.start() |
Richard Oudkerk | a01fb39 | 2013-08-21 19:45:19 +0100 | [diff] [blame] | 4069 | w.close() |
Richard Oudkerk | 409c313 | 2013-04-17 20:58:00 +0100 | [diff] [blame] | 4070 | new_size = r.recv() |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 4071 | join_process(p) |
Richard Oudkerk | 409c313 | 2013-04-17 20:58:00 +0100 | [diff] [blame] | 4072 | self.assertLessEqual(new_size, old_size) |
| 4073 | |
| 4074 | # |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4075 | # Check that non-forked child processes do not inherit unneeded fds/handles |
| 4076 | # |
| 4077 | |
| 4078 | class TestCloseFds(unittest.TestCase): |
| 4079 | |
| 4080 | def get_high_socket_fd(self): |
| 4081 | if WIN32: |
| 4082 | # The child process will not have any socket handles, so |
| 4083 | # calling socket.fromfd() should produce WSAENOTSOCK even |
| 4084 | # if there is a handle of the same number. |
| 4085 | return socket.socket().detach() |
| 4086 | else: |
| 4087 | # We want to produce a socket with an fd high enough that a |
| 4088 | # freshly created child process will not have any fds as high. |
| 4089 | fd = socket.socket().detach() |
| 4090 | to_close = [] |
| 4091 | while fd < 50: |
| 4092 | to_close.append(fd) |
| 4093 | fd = os.dup(fd) |
| 4094 | for x in to_close: |
| 4095 | os.close(x) |
| 4096 | return fd |
| 4097 | |
| 4098 | def close(self, fd): |
| 4099 | if WIN32: |
| 4100 | socket.socket(fileno=fd).close() |
| 4101 | else: |
| 4102 | os.close(fd) |
| 4103 | |
| 4104 | @classmethod |
| 4105 | def _test_closefds(cls, conn, fd): |
| 4106 | try: |
| 4107 | s = socket.fromfd(fd, socket.AF_INET, socket.SOCK_STREAM) |
| 4108 | except Exception as e: |
| 4109 | conn.send(e) |
| 4110 | else: |
| 4111 | s.close() |
| 4112 | conn.send(None) |
| 4113 | |
| 4114 | def test_closefd(self): |
| 4115 | if not HAS_REDUCTION: |
| 4116 | raise unittest.SkipTest('requires fd pickling') |
| 4117 | |
| 4118 | reader, writer = multiprocessing.Pipe() |
| 4119 | fd = self.get_high_socket_fd() |
| 4120 | try: |
| 4121 | p = multiprocessing.Process(target=self._test_closefds, |
| 4122 | args=(writer, fd)) |
| 4123 | p.start() |
| 4124 | writer.close() |
| 4125 | e = reader.recv() |
Victor Stinner | 11f0807 | 2017-09-15 06:55:31 -0700 | [diff] [blame] | 4126 | join_process(p) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4127 | finally: |
| 4128 | self.close(fd) |
| 4129 | writer.close() |
| 4130 | reader.close() |
| 4131 | |
| 4132 | if multiprocessing.get_start_method() == 'fork': |
| 4133 | self.assertIs(e, None) |
| 4134 | else: |
| 4135 | WSAENOTSOCK = 10038 |
| 4136 | self.assertIsInstance(e, OSError) |
| 4137 | self.assertTrue(e.errno == errno.EBADF or |
| 4138 | e.winerror == WSAENOTSOCK, e) |
| 4139 | |
| 4140 | # |
Richard Oudkerk | cca8c53 | 2013-07-01 18:59:26 +0100 | [diff] [blame] | 4141 | # Issue #17097: EINTR should be ignored by recv(), send(), accept() etc |
| 4142 | # |
| 4143 | |
| 4144 | class TestIgnoreEINTR(unittest.TestCase): |
| 4145 | |
| 4146 | @classmethod |
| 4147 | def _test_ignore(cls, conn): |
| 4148 | def handler(signum, frame): |
| 4149 | pass |
| 4150 | signal.signal(signal.SIGUSR1, handler) |
| 4151 | conn.send('ready') |
| 4152 | x = conn.recv() |
| 4153 | conn.send(x) |
| 4154 | conn.send_bytes(b'x'*(1024*1024)) # sending 1 MB should block |
| 4155 | |
| 4156 | @unittest.skipUnless(hasattr(signal, 'SIGUSR1'), 'requires SIGUSR1') |
| 4157 | def test_ignore(self): |
| 4158 | conn, child_conn = multiprocessing.Pipe() |
| 4159 | try: |
| 4160 | p = multiprocessing.Process(target=self._test_ignore, |
| 4161 | args=(child_conn,)) |
| 4162 | p.daemon = True |
| 4163 | p.start() |
| 4164 | child_conn.close() |
| 4165 | self.assertEqual(conn.recv(), 'ready') |
| 4166 | time.sleep(0.1) |
| 4167 | os.kill(p.pid, signal.SIGUSR1) |
| 4168 | time.sleep(0.1) |
| 4169 | conn.send(1234) |
| 4170 | self.assertEqual(conn.recv(), 1234) |
| 4171 | time.sleep(0.1) |
| 4172 | os.kill(p.pid, signal.SIGUSR1) |
| 4173 | self.assertEqual(conn.recv_bytes(), b'x'*(1024*1024)) |
| 4174 | time.sleep(0.1) |
| 4175 | p.join() |
| 4176 | finally: |
| 4177 | conn.close() |
| 4178 | |
| 4179 | @classmethod |
| 4180 | def _test_ignore_listener(cls, conn): |
| 4181 | def handler(signum, frame): |
| 4182 | pass |
| 4183 | signal.signal(signal.SIGUSR1, handler) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4184 | with multiprocessing.connection.Listener() as l: |
| 4185 | conn.send(l.address) |
| 4186 | a = l.accept() |
| 4187 | a.send('welcome') |
Richard Oudkerk | cca8c53 | 2013-07-01 18:59:26 +0100 | [diff] [blame] | 4188 | |
| 4189 | @unittest.skipUnless(hasattr(signal, 'SIGUSR1'), 'requires SIGUSR1') |
| 4190 | def test_ignore_listener(self): |
| 4191 | conn, child_conn = multiprocessing.Pipe() |
| 4192 | try: |
| 4193 | p = multiprocessing.Process(target=self._test_ignore_listener, |
| 4194 | args=(child_conn,)) |
| 4195 | p.daemon = True |
| 4196 | p.start() |
| 4197 | child_conn.close() |
| 4198 | address = conn.recv() |
| 4199 | time.sleep(0.1) |
| 4200 | os.kill(p.pid, signal.SIGUSR1) |
| 4201 | time.sleep(0.1) |
| 4202 | client = multiprocessing.connection.Client(address) |
| 4203 | self.assertEqual(client.recv(), 'welcome') |
| 4204 | p.join() |
| 4205 | finally: |
| 4206 | conn.close() |
| 4207 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4208 | class TestStartMethod(unittest.TestCase): |
Richard Oudkerk | b1694cf | 2013-10-16 16:41:56 +0100 | [diff] [blame] | 4209 | @classmethod |
| 4210 | def _check_context(cls, conn): |
| 4211 | conn.send(multiprocessing.get_start_method()) |
| 4212 | |
| 4213 | def check_context(self, ctx): |
| 4214 | r, w = ctx.Pipe(duplex=False) |
| 4215 | p = ctx.Process(target=self._check_context, args=(w,)) |
| 4216 | p.start() |
| 4217 | w.close() |
| 4218 | child_method = r.recv() |
| 4219 | r.close() |
| 4220 | p.join() |
| 4221 | self.assertEqual(child_method, ctx.get_start_method()) |
| 4222 | |
| 4223 | def test_context(self): |
| 4224 | for method in ('fork', 'spawn', 'forkserver'): |
| 4225 | try: |
| 4226 | ctx = multiprocessing.get_context(method) |
| 4227 | except ValueError: |
| 4228 | continue |
| 4229 | self.assertEqual(ctx.get_start_method(), method) |
| 4230 | self.assertIs(ctx.get_context(), ctx) |
| 4231 | self.assertRaises(ValueError, ctx.set_start_method, 'spawn') |
| 4232 | self.assertRaises(ValueError, ctx.set_start_method, None) |
| 4233 | self.check_context(ctx) |
| 4234 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4235 | def test_set_get(self): |
| 4236 | multiprocessing.set_forkserver_preload(PRELOAD) |
| 4237 | count = 0 |
| 4238 | old_method = multiprocessing.get_start_method() |
Jesse Noller | d00df3c | 2008-06-18 14:22:48 +0000 | [diff] [blame] | 4239 | try: |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4240 | for method in ('fork', 'spawn', 'forkserver'): |
| 4241 | try: |
Richard Oudkerk | b1694cf | 2013-10-16 16:41:56 +0100 | [diff] [blame] | 4242 | multiprocessing.set_start_method(method, force=True) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4243 | except ValueError: |
| 4244 | continue |
| 4245 | self.assertEqual(multiprocessing.get_start_method(), method) |
Richard Oudkerk | b1694cf | 2013-10-16 16:41:56 +0100 | [diff] [blame] | 4246 | ctx = multiprocessing.get_context() |
| 4247 | self.assertEqual(ctx.get_start_method(), method) |
| 4248 | self.assertTrue(type(ctx).__name__.lower().startswith(method)) |
| 4249 | self.assertTrue( |
| 4250 | ctx.Process.__name__.lower().startswith(method)) |
| 4251 | self.check_context(multiprocessing) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4252 | count += 1 |
| 4253 | finally: |
Richard Oudkerk | b1694cf | 2013-10-16 16:41:56 +0100 | [diff] [blame] | 4254 | multiprocessing.set_start_method(old_method, force=True) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4255 | self.assertGreaterEqual(count, 1) |
| 4256 | |
| 4257 | def test_get_all(self): |
| 4258 | methods = multiprocessing.get_all_start_methods() |
| 4259 | if sys.platform == 'win32': |
| 4260 | self.assertEqual(methods, ['spawn']) |
| 4261 | else: |
| 4262 | self.assertTrue(methods == ['fork', 'spawn'] or |
| 4263 | methods == ['fork', 'spawn', 'forkserver']) |
| 4264 | |
Antoine Pitrou | cd2a201 | 2016-12-10 17:13:16 +0100 | [diff] [blame] | 4265 | def test_preload_resources(self): |
| 4266 | if multiprocessing.get_start_method() != 'forkserver': |
| 4267 | self.skipTest("test only relevant for 'forkserver' method") |
| 4268 | name = os.path.join(os.path.dirname(__file__), 'mp_preload.py') |
| 4269 | rc, out, err = test.support.script_helper.assert_python_ok(name) |
| 4270 | out = out.decode() |
| 4271 | err = err.decode() |
| 4272 | if out.rstrip() != 'ok' or err != '': |
| 4273 | print(out) |
| 4274 | print(err) |
| 4275 | self.fail("failed spawning forkserver or grandchild") |
| 4276 | |
| 4277 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4278 | # |
| 4279 | # Check that killing process does not leak named semaphores |
| 4280 | # |
| 4281 | |
| 4282 | @unittest.skipIf(sys.platform == "win32", |
| 4283 | "test semantics don't make sense on Windows") |
| 4284 | class TestSemaphoreTracker(unittest.TestCase): |
| 4285 | def test_semaphore_tracker(self): |
| 4286 | import subprocess |
| 4287 | cmd = '''if 1: |
| 4288 | import multiprocessing as mp, time, os |
| 4289 | mp.set_start_method("spawn") |
| 4290 | lock1 = mp.Lock() |
| 4291 | lock2 = mp.Lock() |
| 4292 | os.write(%d, lock1._semlock.name.encode("ascii") + b"\\n") |
| 4293 | os.write(%d, lock2._semlock.name.encode("ascii") + b"\\n") |
| 4294 | time.sleep(10) |
| 4295 | ''' |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4296 | r, w = os.pipe() |
| 4297 | p = subprocess.Popen([sys.executable, |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4298 | '-c', cmd % (w, w)], |
Richard Oudkerk | 67e5198 | 2013-08-22 23:37:23 +0100 | [diff] [blame] | 4299 | pass_fds=[w], |
| 4300 | stderr=subprocess.PIPE) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4301 | os.close(w) |
| 4302 | with open(r, 'rb', closefd=True) as f: |
| 4303 | name1 = f.readline().rstrip().decode('ascii') |
| 4304 | name2 = f.readline().rstrip().decode('ascii') |
| 4305 | _multiprocessing.sem_unlink(name1) |
| 4306 | p.terminate() |
| 4307 | p.wait() |
Richard Oudkerk | 42a526c | 2014-02-21 22:29:58 +0000 | [diff] [blame] | 4308 | time.sleep(2.0) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4309 | with self.assertRaises(OSError) as ctx: |
| 4310 | _multiprocessing.sem_unlink(name2) |
| 4311 | # docs say it should be ENOENT, but OSX seems to give EINVAL |
| 4312 | self.assertIn(ctx.exception.errno, (errno.ENOENT, errno.EINVAL)) |
Richard Oudkerk | 67e5198 | 2013-08-22 23:37:23 +0100 | [diff] [blame] | 4313 | err = p.stderr.read().decode('utf-8') |
| 4314 | p.stderr.close() |
| 4315 | expected = 'semaphore_tracker: There appear to be 2 leaked semaphores' |
| 4316 | self.assertRegex(err, expected) |
R David Murray | 44b548d | 2016-09-08 13:59:53 -0400 | [diff] [blame] | 4317 | self.assertRegex(err, r'semaphore_tracker: %r: \[Errno' % name1) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4318 | |
Xiang Zhang | 6f75bc0 | 2017-05-17 21:04:00 +0800 | [diff] [blame] | 4319 | class TestSimpleQueue(unittest.TestCase): |
| 4320 | |
| 4321 | @classmethod |
| 4322 | def _test_empty(cls, queue, child_can_start, parent_can_continue): |
| 4323 | child_can_start.wait() |
| 4324 | # issue 30301, could fail under spawn and forkserver |
| 4325 | try: |
| 4326 | queue.put(queue.empty()) |
| 4327 | queue.put(queue.empty()) |
| 4328 | finally: |
| 4329 | parent_can_continue.set() |
| 4330 | |
| 4331 | def test_empty(self): |
| 4332 | queue = multiprocessing.SimpleQueue() |
| 4333 | child_can_start = multiprocessing.Event() |
| 4334 | parent_can_continue = multiprocessing.Event() |
| 4335 | |
| 4336 | proc = multiprocessing.Process( |
| 4337 | target=self._test_empty, |
| 4338 | args=(queue, child_can_start, parent_can_continue) |
| 4339 | ) |
| 4340 | proc.daemon = True |
| 4341 | proc.start() |
| 4342 | |
| 4343 | self.assertTrue(queue.empty()) |
| 4344 | |
| 4345 | child_can_start.set() |
| 4346 | parent_can_continue.wait() |
| 4347 | |
| 4348 | self.assertFalse(queue.empty()) |
| 4349 | self.assertEqual(queue.get(), True) |
| 4350 | self.assertEqual(queue.get(), False) |
| 4351 | self.assertTrue(queue.empty()) |
| 4352 | |
| 4353 | proc.join() |
| 4354 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4355 | # |
| 4356 | # Mixins |
| 4357 | # |
| 4358 | |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4359 | class BaseMixin(object): |
| 4360 | @classmethod |
| 4361 | def setUpClass(cls): |
| 4362 | cls.dangling = (multiprocessing.process._dangling.copy(), |
| 4363 | threading._dangling.copy()) |
| 4364 | |
| 4365 | @classmethod |
| 4366 | def tearDownClass(cls): |
| 4367 | # bpo-26762: Some multiprocessing objects like Pool create reference |
| 4368 | # cycles. Trigger a garbage collection to break these cycles. |
| 4369 | test.support.gc_collect() |
| 4370 | |
| 4371 | processes = set(multiprocessing.process._dangling) - set(cls.dangling[0]) |
| 4372 | if processes: |
Victor Stinner | 957d0e9 | 2017-08-10 17:36:50 +0200 | [diff] [blame] | 4373 | test.support.environment_altered = True |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4374 | print('Warning -- Dangling processes: %s' % processes, |
| 4375 | file=sys.stderr) |
| 4376 | processes = None |
| 4377 | |
| 4378 | threads = set(threading._dangling) - set(cls.dangling[1]) |
| 4379 | if threads: |
Victor Stinner | 957d0e9 | 2017-08-10 17:36:50 +0200 | [diff] [blame] | 4380 | test.support.environment_altered = True |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4381 | print('Warning -- Dangling threads: %s' % threads, |
| 4382 | file=sys.stderr) |
| 4383 | threads = None |
| 4384 | |
| 4385 | |
| 4386 | class ProcessesMixin(BaseMixin): |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4387 | TYPE = 'processes' |
| 4388 | Process = multiprocessing.Process |
| 4389 | connection = multiprocessing.connection |
| 4390 | current_process = staticmethod(multiprocessing.current_process) |
| 4391 | active_children = staticmethod(multiprocessing.active_children) |
| 4392 | Pool = staticmethod(multiprocessing.Pool) |
| 4393 | Pipe = staticmethod(multiprocessing.Pipe) |
| 4394 | Queue = staticmethod(multiprocessing.Queue) |
| 4395 | JoinableQueue = staticmethod(multiprocessing.JoinableQueue) |
| 4396 | Lock = staticmethod(multiprocessing.Lock) |
| 4397 | RLock = staticmethod(multiprocessing.RLock) |
| 4398 | Semaphore = staticmethod(multiprocessing.Semaphore) |
| 4399 | BoundedSemaphore = staticmethod(multiprocessing.BoundedSemaphore) |
| 4400 | Condition = staticmethod(multiprocessing.Condition) |
| 4401 | Event = staticmethod(multiprocessing.Event) |
| 4402 | Barrier = staticmethod(multiprocessing.Barrier) |
| 4403 | Value = staticmethod(multiprocessing.Value) |
| 4404 | Array = staticmethod(multiprocessing.Array) |
| 4405 | RawValue = staticmethod(multiprocessing.RawValue) |
| 4406 | RawArray = staticmethod(multiprocessing.RawArray) |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 4407 | |
Benjamin Peterson | e711caf | 2008-06-11 16:44:04 +0000 | [diff] [blame] | 4408 | |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4409 | class ManagerMixin(BaseMixin): |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4410 | TYPE = 'manager' |
| 4411 | Process = multiprocessing.Process |
| 4412 | Queue = property(operator.attrgetter('manager.Queue')) |
| 4413 | JoinableQueue = property(operator.attrgetter('manager.JoinableQueue')) |
| 4414 | Lock = property(operator.attrgetter('manager.Lock')) |
| 4415 | RLock = property(operator.attrgetter('manager.RLock')) |
| 4416 | Semaphore = property(operator.attrgetter('manager.Semaphore')) |
| 4417 | BoundedSemaphore = property(operator.attrgetter('manager.BoundedSemaphore')) |
| 4418 | Condition = property(operator.attrgetter('manager.Condition')) |
| 4419 | Event = property(operator.attrgetter('manager.Event')) |
| 4420 | Barrier = property(operator.attrgetter('manager.Barrier')) |
| 4421 | Value = property(operator.attrgetter('manager.Value')) |
| 4422 | Array = property(operator.attrgetter('manager.Array')) |
| 4423 | list = property(operator.attrgetter('manager.list')) |
| 4424 | dict = property(operator.attrgetter('manager.dict')) |
| 4425 | Namespace = property(operator.attrgetter('manager.Namespace')) |
| 4426 | |
| 4427 | @classmethod |
| 4428 | def Pool(cls, *args, **kwds): |
| 4429 | return cls.manager.Pool(*args, **kwds) |
| 4430 | |
| 4431 | @classmethod |
| 4432 | def setUpClass(cls): |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4433 | super().setUpClass() |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4434 | cls.manager = multiprocessing.Manager() |
| 4435 | |
| 4436 | @classmethod |
| 4437 | def tearDownClass(cls): |
| 4438 | # only the manager process should be returned by active_children() |
| 4439 | # but this can take a bit on slow machines, so wait a few seconds |
| 4440 | # if there are other children too (see #17395) |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4441 | start_time = time.monotonic() |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4442 | t = 0.01 |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4443 | while len(multiprocessing.active_children()) > 1: |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4444 | time.sleep(t) |
| 4445 | t *= 2 |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4446 | dt = time.monotonic() - start_time |
| 4447 | if dt >= 5.0: |
Victor Stinner | 957d0e9 | 2017-08-10 17:36:50 +0200 | [diff] [blame] | 4448 | test.support.environment_altered = True |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4449 | print("Warning -- multiprocessing.Manager still has %s active " |
| 4450 | "children after %s seconds" |
| 4451 | % (multiprocessing.active_children(), dt), |
| 4452 | file=sys.stderr) |
| 4453 | break |
| 4454 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4455 | gc.collect() # do garbage collection |
| 4456 | if cls.manager._number_of_objects() != 0: |
| 4457 | # This is not really an error since some tests do not |
| 4458 | # ensure that all processes which hold a reference to a |
| 4459 | # managed object have been joined. |
Victor Stinner | 957d0e9 | 2017-08-10 17:36:50 +0200 | [diff] [blame] | 4460 | test.support.environment_altered = True |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4461 | print('Warning -- Shared objects which still exist at manager ' |
| 4462 | 'shutdown:') |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4463 | print(cls.manager._debug_info()) |
| 4464 | cls.manager.shutdown() |
| 4465 | cls.manager.join() |
| 4466 | cls.manager = None |
Richard Oudkerk | 14f5ee0 | 2013-07-19 22:53:42 +0100 | [diff] [blame] | 4467 | |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4468 | super().tearDownClass() |
Richard Oudkerk | 14f5ee0 | 2013-07-19 22:53:42 +0100 | [diff] [blame] | 4469 | |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4470 | |
| 4471 | class ThreadsMixin(BaseMixin): |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4472 | TYPE = 'threads' |
| 4473 | Process = multiprocessing.dummy.Process |
| 4474 | connection = multiprocessing.dummy.connection |
| 4475 | current_process = staticmethod(multiprocessing.dummy.current_process) |
| 4476 | active_children = staticmethod(multiprocessing.dummy.active_children) |
Antoine Pitrou | 62b6a0d | 2016-03-15 10:48:28 +0100 | [diff] [blame] | 4477 | Pool = staticmethod(multiprocessing.dummy.Pool) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4478 | Pipe = staticmethod(multiprocessing.dummy.Pipe) |
| 4479 | Queue = staticmethod(multiprocessing.dummy.Queue) |
| 4480 | JoinableQueue = staticmethod(multiprocessing.dummy.JoinableQueue) |
| 4481 | Lock = staticmethod(multiprocessing.dummy.Lock) |
| 4482 | RLock = staticmethod(multiprocessing.dummy.RLock) |
| 4483 | Semaphore = staticmethod(multiprocessing.dummy.Semaphore) |
| 4484 | BoundedSemaphore = staticmethod(multiprocessing.dummy.BoundedSemaphore) |
| 4485 | Condition = staticmethod(multiprocessing.dummy.Condition) |
| 4486 | Event = staticmethod(multiprocessing.dummy.Event) |
| 4487 | Barrier = staticmethod(multiprocessing.dummy.Barrier) |
| 4488 | Value = staticmethod(multiprocessing.dummy.Value) |
| 4489 | Array = staticmethod(multiprocessing.dummy.Array) |
| 4490 | |
| 4491 | # |
| 4492 | # Functions used to create test cases from the base ones in this module |
| 4493 | # |
| 4494 | |
| 4495 | def install_tests_in_module_dict(remote_globs, start_method): |
| 4496 | __module__ = remote_globs['__name__'] |
| 4497 | local_globs = globals() |
| 4498 | ALL_TYPES = {'processes', 'threads', 'manager'} |
| 4499 | |
| 4500 | for name, base in local_globs.items(): |
| 4501 | if not isinstance(base, type): |
| 4502 | continue |
| 4503 | if issubclass(base, BaseTestCase): |
| 4504 | if base is BaseTestCase: |
| 4505 | continue |
| 4506 | assert set(base.ALLOWED_TYPES) <= ALL_TYPES, base.ALLOWED_TYPES |
| 4507 | for type_ in base.ALLOWED_TYPES: |
| 4508 | newname = 'With' + type_.capitalize() + name[1:] |
| 4509 | Mixin = local_globs[type_.capitalize() + 'Mixin'] |
| 4510 | class Temp(base, Mixin, unittest.TestCase): |
| 4511 | pass |
| 4512 | Temp.__name__ = Temp.__qualname__ = newname |
| 4513 | Temp.__module__ = __module__ |
| 4514 | remote_globs[newname] = Temp |
| 4515 | elif issubclass(base, unittest.TestCase): |
| 4516 | class Temp(base, object): |
| 4517 | pass |
| 4518 | Temp.__name__ = Temp.__qualname__ = name |
| 4519 | Temp.__module__ = __module__ |
| 4520 | remote_globs[name] = Temp |
| 4521 | |
Richard Oudkerk | e0d25ce | 2013-08-29 14:37:47 +0100 | [diff] [blame] | 4522 | dangling = [None, None] |
| 4523 | old_start_method = [None] |
| 4524 | |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4525 | def setUpModule(): |
| 4526 | multiprocessing.set_forkserver_preload(PRELOAD) |
Richard Oudkerk | e0d25ce | 2013-08-29 14:37:47 +0100 | [diff] [blame] | 4527 | multiprocessing.process._cleanup() |
| 4528 | dangling[0] = multiprocessing.process._dangling.copy() |
| 4529 | dangling[1] = threading._dangling.copy() |
Richard Oudkerk | b1694cf | 2013-10-16 16:41:56 +0100 | [diff] [blame] | 4530 | old_start_method[0] = multiprocessing.get_start_method(allow_none=True) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4531 | try: |
Richard Oudkerk | b1694cf | 2013-10-16 16:41:56 +0100 | [diff] [blame] | 4532 | multiprocessing.set_start_method(start_method, force=True) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4533 | except ValueError: |
| 4534 | raise unittest.SkipTest(start_method + |
| 4535 | ' start method not supported') |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4536 | |
| 4537 | if sys.platform.startswith("linux"): |
| 4538 | try: |
| 4539 | lock = multiprocessing.RLock() |
| 4540 | except OSError: |
| 4541 | raise unittest.SkipTest("OSError raises on RLock creation, " |
| 4542 | "see issue 3111!") |
| 4543 | check_enough_semaphores() |
| 4544 | util.get_temp_dir() # creates temp directory |
| 4545 | multiprocessing.get_logger().setLevel(LOG_LEVEL) |
| 4546 | |
| 4547 | def tearDownModule(): |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4548 | need_sleep = False |
| 4549 | |
| 4550 | # bpo-26762: Some multiprocessing objects like Pool create reference |
| 4551 | # cycles. Trigger a garbage collection to break these cycles. |
| 4552 | test.support.gc_collect() |
| 4553 | |
Richard Oudkerk | b1694cf | 2013-10-16 16:41:56 +0100 | [diff] [blame] | 4554 | multiprocessing.set_start_method(old_start_method[0], force=True) |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4555 | # pause a bit so we don't get warning about dangling threads/processes |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4556 | processes = set(multiprocessing.process._dangling) - set(dangling[0]) |
| 4557 | if processes: |
| 4558 | need_sleep = True |
Victor Stinner | 957d0e9 | 2017-08-10 17:36:50 +0200 | [diff] [blame] | 4559 | test.support.environment_altered = True |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4560 | print('Warning -- Dangling processes: %s' % processes, |
| 4561 | file=sys.stderr) |
| 4562 | processes = None |
| 4563 | |
| 4564 | threads = set(threading._dangling) - set(dangling[1]) |
| 4565 | if threads: |
| 4566 | need_sleep = True |
Victor Stinner | 957d0e9 | 2017-08-10 17:36:50 +0200 | [diff] [blame] | 4567 | test.support.environment_altered = True |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4568 | print('Warning -- Dangling threads: %s' % threads, |
| 4569 | file=sys.stderr) |
| 4570 | threads = None |
| 4571 | |
| 4572 | # Sleep 500 ms to give time to child processes to complete. |
| 4573 | if need_sleep: |
| 4574 | time.sleep(0.5) |
Richard Oudkerk | e0d25ce | 2013-08-29 14:37:47 +0100 | [diff] [blame] | 4575 | multiprocessing.process._cleanup() |
Victor Stinner | ffb4940 | 2017-07-25 01:55:54 +0200 | [diff] [blame] | 4576 | test.support.gc_collect() |
Richard Oudkerk | 84ed9a6 | 2013-08-14 15:35:41 +0100 | [diff] [blame] | 4577 | |
| 4578 | remote_globs['setUpModule'] = setUpModule |
| 4579 | remote_globs['tearDownModule'] = tearDownModule |