2412 lines
71 KiB
Python
2412 lines
71 KiB
Python
#!/usr/bin/env python
|
|
|
|
#
|
|
# Unit tests for the multiprocessing package
|
|
#
|
|
|
|
import unittest
|
|
import Queue
|
|
import time
|
|
import sys
|
|
import os
|
|
import gc
|
|
import signal
|
|
import array
|
|
import socket
|
|
import random
|
|
import logging
|
|
import errno
|
|
from test import test_support
|
|
from StringIO import StringIO
|
|
_multiprocessing = test_support.import_module('_multiprocessing')
|
|
# import threading after _multiprocessing to raise a more relevant error
|
|
# message: "No module named _multiprocessing". _multiprocessing is not compiled
|
|
# without thread support.
|
|
import threading
|
|
|
|
# Work around broken sem_open implementations
|
|
test_support.import_module('multiprocessing.synchronize')
|
|
|
|
import multiprocessing.dummy
|
|
import multiprocessing.connection
|
|
import multiprocessing.managers
|
|
import multiprocessing.heap
|
|
import multiprocessing.pool
|
|
|
|
from multiprocessing import util
|
|
|
|
try:
|
|
from multiprocessing import reduction
|
|
HAS_REDUCTION = True
|
|
except ImportError:
|
|
HAS_REDUCTION = False
|
|
|
|
try:
|
|
from multiprocessing.sharedctypes import Value, copy
|
|
HAS_SHAREDCTYPES = True
|
|
except ImportError:
|
|
HAS_SHAREDCTYPES = False
|
|
|
|
try:
|
|
import msvcrt
|
|
except ImportError:
|
|
msvcrt = None
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
latin = str
|
|
|
|
#
|
|
# Constants
|
|
#
|
|
|
|
LOG_LEVEL = util.SUBWARNING
|
|
#LOG_LEVEL = logging.DEBUG
|
|
|
|
DELTA = 0.1
|
|
CHECK_TIMINGS = False # making true makes tests take a lot longer
|
|
# and can sometimes cause some non-serious
|
|
# failures because some calls block a bit
|
|
# longer than expected
|
|
if CHECK_TIMINGS:
|
|
TIMEOUT1, TIMEOUT2, TIMEOUT3 = 0.82, 0.35, 1.4
|
|
else:
|
|
TIMEOUT1, TIMEOUT2, TIMEOUT3 = 0.1, 0.1, 0.1
|
|
|
|
HAVE_GETVALUE = not getattr(_multiprocessing,
|
|
'HAVE_BROKEN_SEM_GETVALUE', False)
|
|
|
|
WIN32 = (sys.platform == "win32")
|
|
|
|
try:
|
|
MAXFD = os.sysconf("SC_OPEN_MAX")
|
|
except:
|
|
MAXFD = 256
|
|
|
|
#
|
|
# Some tests require ctypes
|
|
#
|
|
|
|
try:
|
|
from ctypes import Structure, c_int, c_double
|
|
except ImportError:
|
|
Structure = object
|
|
c_int = c_double = None
|
|
|
|
|
|
def check_enough_semaphores():
|
|
"""Check that the system supports enough semaphores to run the test."""
|
|
# minimum number of semaphores available according to POSIX
|
|
nsems_min = 256
|
|
try:
|
|
nsems = os.sysconf("SC_SEM_NSEMS_MAX")
|
|
except (AttributeError, ValueError):
|
|
# sysconf not available or setting not available
|
|
return
|
|
if nsems == -1 or nsems >= nsems_min:
|
|
return
|
|
raise unittest.SkipTest("The OS doesn't support enough semaphores "
|
|
"to run the test (required: %d)." % nsems_min)
|
|
|
|
|
|
#
|
|
# Creates a wrapper for a function which records the time it takes to finish
|
|
#
|
|
|
|
class TimingWrapper(object):
|
|
|
|
def __init__(self, func):
|
|
self.func = func
|
|
self.elapsed = None
|
|
|
|
def __call__(self, *args, **kwds):
|
|
t = time.time()
|
|
try:
|
|
return self.func(*args, **kwds)
|
|
finally:
|
|
self.elapsed = time.time() - t
|
|
|
|
#
|
|
# Base class for test cases
|
|
#
|
|
|
|
class BaseTestCase(object):
|
|
|
|
ALLOWED_TYPES = ('processes', 'manager', 'threads')
|
|
|
|
def assertTimingAlmostEqual(self, a, b):
|
|
if CHECK_TIMINGS:
|
|
self.assertAlmostEqual(a, b, 1)
|
|
|
|
def assertReturnsIfImplemented(self, value, func, *args):
|
|
try:
|
|
res = func(*args)
|
|
except NotImplementedError:
|
|
pass
|
|
else:
|
|
return self.assertEqual(value, res)
|
|
|
|
# For the sanity of Windows users, rather than crashing or freezing in
|
|
# multiple ways.
|
|
def __reduce__(self, *args):
|
|
raise NotImplementedError("shouldn't try to pickle a test case")
|
|
|
|
__reduce_ex__ = __reduce__
|
|
|
|
#
|
|
# Return the value of a semaphore
|
|
#
|
|
|
|
def get_value(self):
|
|
try:
|
|
return self.get_value()
|
|
except AttributeError:
|
|
try:
|
|
return self._Semaphore__value
|
|
except AttributeError:
|
|
try:
|
|
return self._value
|
|
except AttributeError:
|
|
raise NotImplementedError
|
|
|
|
#
|
|
# Testcases
|
|
#
|
|
|
|
class _TestProcess(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes', 'threads')
|
|
|
|
def test_current(self):
|
|
if self.TYPE == 'threads':
|
|
return
|
|
|
|
current = self.current_process()
|
|
authkey = current.authkey
|
|
|
|
self.assertTrue(current.is_alive())
|
|
self.assertTrue(not current.daemon)
|
|
self.assertIsInstance(authkey, bytes)
|
|
self.assertTrue(len(authkey) > 0)
|
|
self.assertEqual(current.ident, os.getpid())
|
|
self.assertEqual(current.exitcode, None)
|
|
|
|
@classmethod
|
|
def _test(cls, q, *args, **kwds):
|
|
current = cls.current_process()
|
|
q.put(args)
|
|
q.put(kwds)
|
|
q.put(current.name)
|
|
if cls.TYPE != 'threads':
|
|
q.put(bytes(current.authkey))
|
|
q.put(current.pid)
|
|
|
|
def test_process(self):
|
|
q = self.Queue(1)
|
|
e = self.Event()
|
|
args = (q, 1, 2)
|
|
kwargs = {'hello':23, 'bye':2.54}
|
|
name = 'SomeProcess'
|
|
p = self.Process(
|
|
target=self._test, args=args, kwargs=kwargs, name=name
|
|
)
|
|
p.daemon = True
|
|
current = self.current_process()
|
|
|
|
if self.TYPE != 'threads':
|
|
self.assertEqual(p.authkey, current.authkey)
|
|
self.assertEqual(p.is_alive(), False)
|
|
self.assertEqual(p.daemon, True)
|
|
self.assertNotIn(p, self.active_children())
|
|
self.assertTrue(type(self.active_children()) is list)
|
|
self.assertEqual(p.exitcode, None)
|
|
|
|
p.start()
|
|
|
|
self.assertEqual(p.exitcode, None)
|
|
self.assertEqual(p.is_alive(), True)
|
|
self.assertIn(p, self.active_children())
|
|
|
|
self.assertEqual(q.get(), args[1:])
|
|
self.assertEqual(q.get(), kwargs)
|
|
self.assertEqual(q.get(), p.name)
|
|
if self.TYPE != 'threads':
|
|
self.assertEqual(q.get(), current.authkey)
|
|
self.assertEqual(q.get(), p.pid)
|
|
|
|
p.join()
|
|
|
|
self.assertEqual(p.exitcode, 0)
|
|
self.assertEqual(p.is_alive(), False)
|
|
self.assertNotIn(p, self.active_children())
|
|
|
|
@classmethod
|
|
def _test_terminate(cls):
|
|
time.sleep(1000)
|
|
|
|
def test_terminate(self):
|
|
if self.TYPE == 'threads':
|
|
return
|
|
|
|
p = self.Process(target=self._test_terminate)
|
|
p.daemon = True
|
|
p.start()
|
|
|
|
self.assertEqual(p.is_alive(), True)
|
|
self.assertIn(p, self.active_children())
|
|
self.assertEqual(p.exitcode, None)
|
|
|
|
p.terminate()
|
|
|
|
join = TimingWrapper(p.join)
|
|
self.assertEqual(join(), None)
|
|
self.assertTimingAlmostEqual(join.elapsed, 0.0)
|
|
|
|
self.assertEqual(p.is_alive(), False)
|
|
self.assertNotIn(p, self.active_children())
|
|
|
|
p.join()
|
|
|
|
# XXX sometimes get p.exitcode == 0 on Windows ...
|
|
#self.assertEqual(p.exitcode, -signal.SIGTERM)
|
|
|
|
def test_cpu_count(self):
|
|
try:
|
|
cpus = multiprocessing.cpu_count()
|
|
except NotImplementedError:
|
|
cpus = 1
|
|
self.assertTrue(type(cpus) is int)
|
|
self.assertTrue(cpus >= 1)
|
|
|
|
def test_active_children(self):
|
|
self.assertEqual(type(self.active_children()), list)
|
|
|
|
p = self.Process(target=time.sleep, args=(DELTA,))
|
|
self.assertNotIn(p, self.active_children())
|
|
|
|
p.daemon = True
|
|
p.start()
|
|
self.assertIn(p, self.active_children())
|
|
|
|
p.join()
|
|
self.assertNotIn(p, self.active_children())
|
|
|
|
@classmethod
|
|
def _test_recursion(cls, wconn, id):
|
|
from multiprocessing import forking
|
|
wconn.send(id)
|
|
if len(id) < 2:
|
|
for i in range(2):
|
|
p = cls.Process(
|
|
target=cls._test_recursion, args=(wconn, id+[i])
|
|
)
|
|
p.start()
|
|
p.join()
|
|
|
|
def test_recursion(self):
|
|
rconn, wconn = self.Pipe(duplex=False)
|
|
self._test_recursion(wconn, [])
|
|
|
|
time.sleep(DELTA)
|
|
result = []
|
|
while rconn.poll():
|
|
result.append(rconn.recv())
|
|
|
|
expected = [
|
|
[],
|
|
[0],
|
|
[0, 0],
|
|
[0, 1],
|
|
[1],
|
|
[1, 0],
|
|
[1, 1]
|
|
]
|
|
self.assertEqual(result, expected)
|
|
|
|
@classmethod
|
|
def _test_sys_exit(cls, reason, testfn):
|
|
sys.stderr = open(testfn, 'w')
|
|
sys.exit(reason)
|
|
|
|
def test_sys_exit(self):
|
|
# See Issue 13854
|
|
if self.TYPE == 'threads':
|
|
return
|
|
|
|
testfn = test_support.TESTFN
|
|
self.addCleanup(test_support.unlink, testfn)
|
|
|
|
for reason, code in (([1, 2, 3], 1), ('ignore this', 0)):
|
|
p = self.Process(target=self._test_sys_exit, args=(reason, testfn))
|
|
p.daemon = True
|
|
p.start()
|
|
p.join(5)
|
|
self.assertEqual(p.exitcode, code)
|
|
|
|
with open(testfn, 'r') as f:
|
|
self.assertEqual(f.read().rstrip(), str(reason))
|
|
|
|
for reason in (True, False, 8):
|
|
p = self.Process(target=sys.exit, args=(reason,))
|
|
p.daemon = True
|
|
p.start()
|
|
p.join(5)
|
|
self.assertEqual(p.exitcode, reason)
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
class _UpperCaser(multiprocessing.Process):
|
|
|
|
def __init__(self):
|
|
multiprocessing.Process.__init__(self)
|
|
self.child_conn, self.parent_conn = multiprocessing.Pipe()
|
|
|
|
def run(self):
|
|
self.parent_conn.close()
|
|
for s in iter(self.child_conn.recv, None):
|
|
self.child_conn.send(s.upper())
|
|
self.child_conn.close()
|
|
|
|
def submit(self, s):
|
|
assert type(s) is str
|
|
self.parent_conn.send(s)
|
|
return self.parent_conn.recv()
|
|
|
|
def stop(self):
|
|
self.parent_conn.send(None)
|
|
self.parent_conn.close()
|
|
self.child_conn.close()
|
|
|
|
class _TestSubclassingProcess(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes',)
|
|
|
|
def test_subclassing(self):
|
|
uppercaser = _UpperCaser()
|
|
uppercaser.daemon = True
|
|
uppercaser.start()
|
|
self.assertEqual(uppercaser.submit('hello'), 'HELLO')
|
|
self.assertEqual(uppercaser.submit('world'), 'WORLD')
|
|
uppercaser.stop()
|
|
uppercaser.join()
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
def queue_empty(q):
|
|
if hasattr(q, 'empty'):
|
|
return q.empty()
|
|
else:
|
|
return q.qsize() == 0
|
|
|
|
def queue_full(q, maxsize):
|
|
if hasattr(q, 'full'):
|
|
return q.full()
|
|
else:
|
|
return q.qsize() == maxsize
|
|
|
|
|
|
class _TestQueue(BaseTestCase):
|
|
|
|
|
|
@classmethod
|
|
def _test_put(cls, queue, child_can_start, parent_can_continue):
|
|
child_can_start.wait()
|
|
for i in range(6):
|
|
queue.get()
|
|
parent_can_continue.set()
|
|
|
|
def test_put(self):
|
|
MAXSIZE = 6
|
|
queue = self.Queue(maxsize=MAXSIZE)
|
|
child_can_start = self.Event()
|
|
parent_can_continue = self.Event()
|
|
|
|
proc = self.Process(
|
|
target=self._test_put,
|
|
args=(queue, child_can_start, parent_can_continue)
|
|
)
|
|
proc.daemon = True
|
|
proc.start()
|
|
|
|
self.assertEqual(queue_empty(queue), True)
|
|
self.assertEqual(queue_full(queue, MAXSIZE), False)
|
|
|
|
queue.put(1)
|
|
queue.put(2, True)
|
|
queue.put(3, True, None)
|
|
queue.put(4, False)
|
|
queue.put(5, False, None)
|
|
queue.put_nowait(6)
|
|
|
|
# the values may be in buffer but not yet in pipe so sleep a bit
|
|
time.sleep(DELTA)
|
|
|
|
self.assertEqual(queue_empty(queue), False)
|
|
self.assertEqual(queue_full(queue, MAXSIZE), True)
|
|
|
|
put = TimingWrapper(queue.put)
|
|
put_nowait = TimingWrapper(queue.put_nowait)
|
|
|
|
self.assertRaises(Queue.Full, put, 7, False)
|
|
self.assertTimingAlmostEqual(put.elapsed, 0)
|
|
|
|
self.assertRaises(Queue.Full, put, 7, False, None)
|
|
self.assertTimingAlmostEqual(put.elapsed, 0)
|
|
|
|
self.assertRaises(Queue.Full, put_nowait, 7)
|
|
self.assertTimingAlmostEqual(put_nowait.elapsed, 0)
|
|
|
|
self.assertRaises(Queue.Full, put, 7, True, TIMEOUT1)
|
|
self.assertTimingAlmostEqual(put.elapsed, TIMEOUT1)
|
|
|
|
self.assertRaises(Queue.Full, put, 7, False, TIMEOUT2)
|
|
self.assertTimingAlmostEqual(put.elapsed, 0)
|
|
|
|
self.assertRaises(Queue.Full, put, 7, True, timeout=TIMEOUT3)
|
|
self.assertTimingAlmostEqual(put.elapsed, TIMEOUT3)
|
|
|
|
child_can_start.set()
|
|
parent_can_continue.wait()
|
|
|
|
self.assertEqual(queue_empty(queue), True)
|
|
self.assertEqual(queue_full(queue, MAXSIZE), False)
|
|
|
|
proc.join()
|
|
|
|
@classmethod
|
|
def _test_get(cls, queue, child_can_start, parent_can_continue):
|
|
child_can_start.wait()
|
|
#queue.put(1)
|
|
queue.put(2)
|
|
queue.put(3)
|
|
queue.put(4)
|
|
queue.put(5)
|
|
parent_can_continue.set()
|
|
|
|
def test_get(self):
|
|
queue = self.Queue()
|
|
child_can_start = self.Event()
|
|
parent_can_continue = self.Event()
|
|
|
|
proc = self.Process(
|
|
target=self._test_get,
|
|
args=(queue, child_can_start, parent_can_continue)
|
|
)
|
|
proc.daemon = True
|
|
proc.start()
|
|
|
|
self.assertEqual(queue_empty(queue), True)
|
|
|
|
child_can_start.set()
|
|
parent_can_continue.wait()
|
|
|
|
time.sleep(DELTA)
|
|
self.assertEqual(queue_empty(queue), False)
|
|
|
|
# Hangs unexpectedly, remove for now
|
|
#self.assertEqual(queue.get(), 1)
|
|
self.assertEqual(queue.get(True, None), 2)
|
|
self.assertEqual(queue.get(True), 3)
|
|
self.assertEqual(queue.get(timeout=1), 4)
|
|
self.assertEqual(queue.get_nowait(), 5)
|
|
|
|
self.assertEqual(queue_empty(queue), True)
|
|
|
|
get = TimingWrapper(queue.get)
|
|
get_nowait = TimingWrapper(queue.get_nowait)
|
|
|
|
self.assertRaises(Queue.Empty, get, False)
|
|
self.assertTimingAlmostEqual(get.elapsed, 0)
|
|
|
|
self.assertRaises(Queue.Empty, get, False, None)
|
|
self.assertTimingAlmostEqual(get.elapsed, 0)
|
|
|
|
self.assertRaises(Queue.Empty, get_nowait)
|
|
self.assertTimingAlmostEqual(get_nowait.elapsed, 0)
|
|
|
|
self.assertRaises(Queue.Empty, get, True, TIMEOUT1)
|
|
self.assertTimingAlmostEqual(get.elapsed, TIMEOUT1)
|
|
|
|
self.assertRaises(Queue.Empty, get, False, TIMEOUT2)
|
|
self.assertTimingAlmostEqual(get.elapsed, 0)
|
|
|
|
self.assertRaises(Queue.Empty, get, timeout=TIMEOUT3)
|
|
self.assertTimingAlmostEqual(get.elapsed, TIMEOUT3)
|
|
|
|
proc.join()
|
|
|
|
@classmethod
|
|
def _test_fork(cls, queue):
|
|
for i in range(10, 20):
|
|
queue.put(i)
|
|
# note that at this point the items may only be buffered, so the
|
|
# process cannot shutdown until the feeder thread has finished
|
|
# pushing items onto the pipe.
|
|
|
|
def test_fork(self):
|
|
# Old versions of Queue would fail to create a new feeder
|
|
# thread for a forked process if the original process had its
|
|
# own feeder thread. This test checks that this no longer
|
|
# happens.
|
|
|
|
queue = self.Queue()
|
|
|
|
# put items on queue so that main process starts a feeder thread
|
|
for i in range(10):
|
|
queue.put(i)
|
|
|
|
# wait to make sure thread starts before we fork a new process
|
|
time.sleep(DELTA)
|
|
|
|
# fork process
|
|
p = self.Process(target=self._test_fork, args=(queue,))
|
|
p.daemon = True
|
|
p.start()
|
|
|
|
# check that all expected items are in the queue
|
|
for i in range(20):
|
|
self.assertEqual(queue.get(), i)
|
|
self.assertRaises(Queue.Empty, queue.get, False)
|
|
|
|
p.join()
|
|
|
|
def test_qsize(self):
|
|
q = self.Queue()
|
|
try:
|
|
self.assertEqual(q.qsize(), 0)
|
|
except NotImplementedError:
|
|
return
|
|
q.put(1)
|
|
self.assertEqual(q.qsize(), 1)
|
|
q.put(5)
|
|
self.assertEqual(q.qsize(), 2)
|
|
q.get()
|
|
self.assertEqual(q.qsize(), 1)
|
|
q.get()
|
|
self.assertEqual(q.qsize(), 0)
|
|
|
|
@classmethod
|
|
def _test_task_done(cls, q):
|
|
for obj in iter(q.get, None):
|
|
time.sleep(DELTA)
|
|
q.task_done()
|
|
|
|
def test_task_done(self):
|
|
queue = self.JoinableQueue()
|
|
|
|
if sys.version_info < (2, 5) and not hasattr(queue, 'task_done'):
|
|
self.skipTest("requires 'queue.task_done()' method")
|
|
|
|
workers = [self.Process(target=self._test_task_done, args=(queue,))
|
|
for i in xrange(4)]
|
|
|
|
for p in workers:
|
|
p.daemon = True
|
|
p.start()
|
|
|
|
for i in xrange(10):
|
|
queue.put(i)
|
|
|
|
queue.join()
|
|
|
|
for p in workers:
|
|
queue.put(None)
|
|
|
|
for p in workers:
|
|
p.join()
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
class _TestLock(BaseTestCase):
|
|
|
|
def test_lock(self):
|
|
lock = self.Lock()
|
|
self.assertEqual(lock.acquire(), True)
|
|
self.assertEqual(lock.acquire(False), False)
|
|
self.assertEqual(lock.release(), None)
|
|
self.assertRaises((ValueError, threading.ThreadError), lock.release)
|
|
|
|
def test_rlock(self):
|
|
lock = self.RLock()
|
|
self.assertEqual(lock.acquire(), True)
|
|
self.assertEqual(lock.acquire(), True)
|
|
self.assertEqual(lock.acquire(), True)
|
|
self.assertEqual(lock.release(), None)
|
|
self.assertEqual(lock.release(), None)
|
|
self.assertEqual(lock.release(), None)
|
|
self.assertRaises((AssertionError, RuntimeError), lock.release)
|
|
|
|
def test_lock_context(self):
|
|
with self.Lock():
|
|
pass
|
|
|
|
|
|
class _TestSemaphore(BaseTestCase):
|
|
|
|
def _test_semaphore(self, sem):
|
|
self.assertReturnsIfImplemented(2, get_value, sem)
|
|
self.assertEqual(sem.acquire(), True)
|
|
self.assertReturnsIfImplemented(1, get_value, sem)
|
|
self.assertEqual(sem.acquire(), True)
|
|
self.assertReturnsIfImplemented(0, get_value, sem)
|
|
self.assertEqual(sem.acquire(False), False)
|
|
self.assertReturnsIfImplemented(0, get_value, sem)
|
|
self.assertEqual(sem.release(), None)
|
|
self.assertReturnsIfImplemented(1, get_value, sem)
|
|
self.assertEqual(sem.release(), None)
|
|
self.assertReturnsIfImplemented(2, get_value, sem)
|
|
|
|
def test_semaphore(self):
|
|
sem = self.Semaphore(2)
|
|
self._test_semaphore(sem)
|
|
self.assertEqual(sem.release(), None)
|
|
self.assertReturnsIfImplemented(3, get_value, sem)
|
|
self.assertEqual(sem.release(), None)
|
|
self.assertReturnsIfImplemented(4, get_value, sem)
|
|
|
|
def test_bounded_semaphore(self):
|
|
sem = self.BoundedSemaphore(2)
|
|
self._test_semaphore(sem)
|
|
# Currently fails on OS/X
|
|
#if HAVE_GETVALUE:
|
|
# self.assertRaises(ValueError, sem.release)
|
|
# self.assertReturnsIfImplemented(2, get_value, sem)
|
|
|
|
def test_timeout(self):
|
|
if self.TYPE != 'processes':
|
|
return
|
|
|
|
sem = self.Semaphore(0)
|
|
acquire = TimingWrapper(sem.acquire)
|
|
|
|
self.assertEqual(acquire(False), False)
|
|
self.assertTimingAlmostEqual(acquire.elapsed, 0.0)
|
|
|
|
self.assertEqual(acquire(False, None), False)
|
|
self.assertTimingAlmostEqual(acquire.elapsed, 0.0)
|
|
|
|
self.assertEqual(acquire(False, TIMEOUT1), False)
|
|
self.assertTimingAlmostEqual(acquire.elapsed, 0)
|
|
|
|
self.assertEqual(acquire(True, TIMEOUT2), False)
|
|
self.assertTimingAlmostEqual(acquire.elapsed, TIMEOUT2)
|
|
|
|
self.assertEqual(acquire(timeout=TIMEOUT3), False)
|
|
self.assertTimingAlmostEqual(acquire.elapsed, TIMEOUT3)
|
|
|
|
|
|
class _TestCondition(BaseTestCase):
|
|
|
|
@classmethod
|
|
def f(cls, cond, sleeping, woken, timeout=None):
|
|
cond.acquire()
|
|
sleeping.release()
|
|
cond.wait(timeout)
|
|
woken.release()
|
|
cond.release()
|
|
|
|
def check_invariant(self, cond):
|
|
# this is only supposed to succeed when there are no sleepers
|
|
if self.TYPE == 'processes':
|
|
try:
|
|
sleepers = (cond._sleeping_count.get_value() -
|
|
cond._woken_count.get_value())
|
|
self.assertEqual(sleepers, 0)
|
|
self.assertEqual(cond._wait_semaphore.get_value(), 0)
|
|
except NotImplementedError:
|
|
pass
|
|
|
|
def test_notify(self):
|
|
cond = self.Condition()
|
|
sleeping = self.Semaphore(0)
|
|
woken = self.Semaphore(0)
|
|
|
|
p = self.Process(target=self.f, args=(cond, sleeping, woken))
|
|
p.daemon = True
|
|
p.start()
|
|
|
|
p = threading.Thread(target=self.f, args=(cond, sleeping, woken))
|
|
p.daemon = True
|
|
p.start()
|
|
|
|
# wait for both children to start sleeping
|
|
sleeping.acquire()
|
|
sleeping.acquire()
|
|
|
|
# check no process/thread has woken up
|
|
time.sleep(DELTA)
|
|
self.assertReturnsIfImplemented(0, get_value, woken)
|
|
|
|
# wake up one process/thread
|
|
cond.acquire()
|
|
cond.notify()
|
|
cond.release()
|
|
|
|
# check one process/thread has woken up
|
|
time.sleep(DELTA)
|
|
self.assertReturnsIfImplemented(1, get_value, woken)
|
|
|
|
# wake up another
|
|
cond.acquire()
|
|
cond.notify()
|
|
cond.release()
|
|
|
|
# check other has woken up
|
|
time.sleep(DELTA)
|
|
self.assertReturnsIfImplemented(2, get_value, woken)
|
|
|
|
# check state is not mucked up
|
|
self.check_invariant(cond)
|
|
p.join()
|
|
|
|
def test_notify_all(self):
|
|
cond = self.Condition()
|
|
sleeping = self.Semaphore(0)
|
|
woken = self.Semaphore(0)
|
|
|
|
# start some threads/processes which will timeout
|
|
for i in range(3):
|
|
p = self.Process(target=self.f,
|
|
args=(cond, sleeping, woken, TIMEOUT1))
|
|
p.daemon = True
|
|
p.start()
|
|
|
|
t = threading.Thread(target=self.f,
|
|
args=(cond, sleeping, woken, TIMEOUT1))
|
|
t.daemon = True
|
|
t.start()
|
|
|
|
# wait for them all to sleep
|
|
for i in xrange(6):
|
|
sleeping.acquire()
|
|
|
|
# check they have all timed out
|
|
for i in xrange(6):
|
|
woken.acquire()
|
|
self.assertReturnsIfImplemented(0, get_value, woken)
|
|
|
|
# check state is not mucked up
|
|
self.check_invariant(cond)
|
|
|
|
# start some more threads/processes
|
|
for i in range(3):
|
|
p = self.Process(target=self.f, args=(cond, sleeping, woken))
|
|
p.daemon = True
|
|
p.start()
|
|
|
|
t = threading.Thread(target=self.f, args=(cond, sleeping, woken))
|
|
t.daemon = True
|
|
t.start()
|
|
|
|
# wait for them to all sleep
|
|
for i in xrange(6):
|
|
sleeping.acquire()
|
|
|
|
# check no process/thread has woken up
|
|
time.sleep(DELTA)
|
|
self.assertReturnsIfImplemented(0, get_value, woken)
|
|
|
|
# wake them all up
|
|
cond.acquire()
|
|
cond.notify_all()
|
|
cond.release()
|
|
|
|
# check they have all woken
|
|
time.sleep(DELTA)
|
|
self.assertReturnsIfImplemented(6, get_value, woken)
|
|
|
|
# check state is not mucked up
|
|
self.check_invariant(cond)
|
|
|
|
def test_timeout(self):
|
|
cond = self.Condition()
|
|
wait = TimingWrapper(cond.wait)
|
|
cond.acquire()
|
|
res = wait(TIMEOUT1)
|
|
cond.release()
|
|
self.assertEqual(res, None)
|
|
self.assertTimingAlmostEqual(wait.elapsed, TIMEOUT1)
|
|
|
|
|
|
class _TestEvent(BaseTestCase):
|
|
|
|
@classmethod
|
|
def _test_event(cls, event):
|
|
time.sleep(TIMEOUT2)
|
|
event.set()
|
|
|
|
def test_event(self):
|
|
event = self.Event()
|
|
wait = TimingWrapper(event.wait)
|
|
|
|
# Removed temporarily, due to API shear, this does not
|
|
# work with threading._Event objects. is_set == isSet
|
|
self.assertEqual(event.is_set(), False)
|
|
|
|
# Removed, threading.Event.wait() will return the value of the __flag
|
|
# instead of None. API Shear with the semaphore backed mp.Event
|
|
self.assertEqual(wait(0.0), False)
|
|
self.assertTimingAlmostEqual(wait.elapsed, 0.0)
|
|
self.assertEqual(wait(TIMEOUT1), False)
|
|
self.assertTimingAlmostEqual(wait.elapsed, TIMEOUT1)
|
|
|
|
event.set()
|
|
|
|
# See note above on the API differences
|
|
self.assertEqual(event.is_set(), True)
|
|
self.assertEqual(wait(), True)
|
|
self.assertTimingAlmostEqual(wait.elapsed, 0.0)
|
|
self.assertEqual(wait(TIMEOUT1), True)
|
|
self.assertTimingAlmostEqual(wait.elapsed, 0.0)
|
|
# self.assertEqual(event.is_set(), True)
|
|
|
|
event.clear()
|
|
|
|
#self.assertEqual(event.is_set(), False)
|
|
|
|
p = self.Process(target=self._test_event, args=(event,))
|
|
p.daemon = True
|
|
p.start()
|
|
self.assertEqual(wait(), True)
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
class _TestValue(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes',)
|
|
|
|
codes_values = [
|
|
('i', 4343, 24234),
|
|
('d', 3.625, -4.25),
|
|
('h', -232, 234),
|
|
('c', latin('x'), latin('y'))
|
|
]
|
|
|
|
def setUp(self):
|
|
if not HAS_SHAREDCTYPES:
|
|
self.skipTest("requires multiprocessing.sharedctypes")
|
|
|
|
@classmethod
|
|
def _test(cls, values):
|
|
for sv, cv in zip(values, cls.codes_values):
|
|
sv.value = cv[2]
|
|
|
|
|
|
def test_value(self, raw=False):
|
|
if raw:
|
|
values = [self.RawValue(code, value)
|
|
for code, value, _ in self.codes_values]
|
|
else:
|
|
values = [self.Value(code, value)
|
|
for code, value, _ in self.codes_values]
|
|
|
|
for sv, cv in zip(values, self.codes_values):
|
|
self.assertEqual(sv.value, cv[1])
|
|
|
|
proc = self.Process(target=self._test, args=(values,))
|
|
proc.daemon = True
|
|
proc.start()
|
|
proc.join()
|
|
|
|
for sv, cv in zip(values, self.codes_values):
|
|
self.assertEqual(sv.value, cv[2])
|
|
|
|
def test_rawvalue(self):
|
|
self.test_value(raw=True)
|
|
|
|
def test_getobj_getlock(self):
|
|
val1 = self.Value('i', 5)
|
|
lock1 = val1.get_lock()
|
|
obj1 = val1.get_obj()
|
|
|
|
val2 = self.Value('i', 5, lock=None)
|
|
lock2 = val2.get_lock()
|
|
obj2 = val2.get_obj()
|
|
|
|
lock = self.Lock()
|
|
val3 = self.Value('i', 5, lock=lock)
|
|
lock3 = val3.get_lock()
|
|
obj3 = val3.get_obj()
|
|
self.assertEqual(lock, lock3)
|
|
|
|
arr4 = self.Value('i', 5, lock=False)
|
|
self.assertFalse(hasattr(arr4, 'get_lock'))
|
|
self.assertFalse(hasattr(arr4, 'get_obj'))
|
|
|
|
self.assertRaises(AttributeError, self.Value, 'i', 5, lock='navalue')
|
|
|
|
arr5 = self.RawValue('i', 5)
|
|
self.assertFalse(hasattr(arr5, 'get_lock'))
|
|
self.assertFalse(hasattr(arr5, 'get_obj'))
|
|
|
|
|
|
class _TestArray(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes',)
|
|
|
|
@classmethod
|
|
def f(cls, seq):
|
|
for i in range(1, len(seq)):
|
|
seq[i] += seq[i-1]
|
|
|
|
@unittest.skipIf(c_int is None, "requires _ctypes")
|
|
def test_array(self, raw=False):
|
|
seq = [680, 626, 934, 821, 150, 233, 548, 982, 714, 831]
|
|
if raw:
|
|
arr = self.RawArray('i', seq)
|
|
else:
|
|
arr = self.Array('i', seq)
|
|
|
|
self.assertEqual(len(arr), len(seq))
|
|
self.assertEqual(arr[3], seq[3])
|
|
self.assertEqual(list(arr[2:7]), list(seq[2:7]))
|
|
|
|
arr[4:8] = seq[4:8] = array.array('i', [1, 2, 3, 4])
|
|
|
|
self.assertEqual(list(arr[:]), seq)
|
|
|
|
self.f(seq)
|
|
|
|
p = self.Process(target=self.f, args=(arr,))
|
|
p.daemon = True
|
|
p.start()
|
|
p.join()
|
|
|
|
self.assertEqual(list(arr[:]), seq)
|
|
|
|
@unittest.skipIf(c_int is None, "requires _ctypes")
|
|
def test_array_from_size(self):
|
|
size = 10
|
|
# Test for zeroing (see issue #11675).
|
|
# The repetition below strengthens the test by increasing the chances
|
|
# of previously allocated non-zero memory being used for the new array
|
|
# on the 2nd and 3rd loops.
|
|
for _ in range(3):
|
|
arr = self.Array('i', size)
|
|
self.assertEqual(len(arr), size)
|
|
self.assertEqual(list(arr), [0] * size)
|
|
arr[:] = range(10)
|
|
self.assertEqual(list(arr), range(10))
|
|
del arr
|
|
|
|
@unittest.skipIf(c_int is None, "requires _ctypes")
|
|
def test_rawarray(self):
|
|
self.test_array(raw=True)
|
|
|
|
@unittest.skipIf(c_int is None, "requires _ctypes")
|
|
def test_array_accepts_long(self):
|
|
arr = self.Array('i', 10L)
|
|
self.assertEqual(len(arr), 10)
|
|
raw_arr = self.RawArray('i', 10L)
|
|
self.assertEqual(len(raw_arr), 10)
|
|
|
|
@unittest.skipIf(c_int is None, "requires _ctypes")
|
|
def test_getobj_getlock_obj(self):
|
|
arr1 = self.Array('i', range(10))
|
|
lock1 = arr1.get_lock()
|
|
obj1 = arr1.get_obj()
|
|
|
|
arr2 = self.Array('i', range(10), lock=None)
|
|
lock2 = arr2.get_lock()
|
|
obj2 = arr2.get_obj()
|
|
|
|
lock = self.Lock()
|
|
arr3 = self.Array('i', range(10), lock=lock)
|
|
lock3 = arr3.get_lock()
|
|
obj3 = arr3.get_obj()
|
|
self.assertEqual(lock, lock3)
|
|
|
|
arr4 = self.Array('i', range(10), lock=False)
|
|
self.assertFalse(hasattr(arr4, 'get_lock'))
|
|
self.assertFalse(hasattr(arr4, 'get_obj'))
|
|
self.assertRaises(AttributeError,
|
|
self.Array, 'i', range(10), lock='notalock')
|
|
|
|
arr5 = self.RawArray('i', range(10))
|
|
self.assertFalse(hasattr(arr5, 'get_lock'))
|
|
self.assertFalse(hasattr(arr5, 'get_obj'))
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
class _TestContainers(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('manager',)
|
|
|
|
def test_list(self):
|
|
a = self.list(range(10))
|
|
self.assertEqual(a[:], range(10))
|
|
|
|
b = self.list()
|
|
self.assertEqual(b[:], [])
|
|
|
|
b.extend(range(5))
|
|
self.assertEqual(b[:], range(5))
|
|
|
|
self.assertEqual(b[2], 2)
|
|
self.assertEqual(b[2:10], [2,3,4])
|
|
|
|
b *= 2
|
|
self.assertEqual(b[:], [0, 1, 2, 3, 4, 0, 1, 2, 3, 4])
|
|
|
|
self.assertEqual(b + [5, 6], [0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 6])
|
|
|
|
self.assertEqual(a[:], range(10))
|
|
|
|
d = [a, b]
|
|
e = self.list(d)
|
|
self.assertEqual(
|
|
e[:],
|
|
[[0, 1, 2, 3, 4, 5, 6, 7, 8, 9], [0, 1, 2, 3, 4, 0, 1, 2, 3, 4]]
|
|
)
|
|
|
|
f = self.list([a])
|
|
a.append('hello')
|
|
self.assertEqual(f[:], [[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 'hello']])
|
|
|
|
def test_dict(self):
|
|
d = self.dict()
|
|
indices = range(65, 70)
|
|
for i in indices:
|
|
d[i] = chr(i)
|
|
self.assertEqual(d.copy(), dict((i, chr(i)) for i in indices))
|
|
self.assertEqual(sorted(d.keys()), indices)
|
|
self.assertEqual(sorted(d.values()), [chr(i) for i in indices])
|
|
self.assertEqual(sorted(d.items()), [(i, chr(i)) for i in indices])
|
|
|
|
def test_namespace(self):
|
|
n = self.Namespace()
|
|
n.name = 'Bob'
|
|
n.job = 'Builder'
|
|
n._hidden = 'hidden'
|
|
self.assertEqual((n.name, n.job), ('Bob', 'Builder'))
|
|
del n.job
|
|
self.assertEqual(str(n), "Namespace(name='Bob')")
|
|
self.assertTrue(hasattr(n, 'name'))
|
|
self.assertTrue(not hasattr(n, 'job'))
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
def sqr(x, wait=0.0):
|
|
time.sleep(wait)
|
|
return x*x
|
|
class _TestPool(BaseTestCase):
|
|
|
|
def test_apply(self):
|
|
papply = self.pool.apply
|
|
self.assertEqual(papply(sqr, (5,)), sqr(5))
|
|
self.assertEqual(papply(sqr, (), {'x':3}), sqr(x=3))
|
|
|
|
def test_map(self):
|
|
pmap = self.pool.map
|
|
self.assertEqual(pmap(sqr, range(10)), map(sqr, range(10)))
|
|
self.assertEqual(pmap(sqr, range(100), chunksize=20),
|
|
map(sqr, range(100)))
|
|
|
|
def test_map_chunksize(self):
|
|
try:
|
|
self.pool.map_async(sqr, [], chunksize=1).get(timeout=TIMEOUT1)
|
|
except multiprocessing.TimeoutError:
|
|
self.fail("pool.map_async with chunksize stalled on null list")
|
|
|
|
def test_async(self):
|
|
res = self.pool.apply_async(sqr, (7, TIMEOUT1,))
|
|
get = TimingWrapper(res.get)
|
|
self.assertEqual(get(), 49)
|
|
self.assertTimingAlmostEqual(get.elapsed, TIMEOUT1)
|
|
|
|
def test_async_timeout(self):
|
|
res = self.pool.apply_async(sqr, (6, TIMEOUT2 + 0.2))
|
|
get = TimingWrapper(res.get)
|
|
self.assertRaises(multiprocessing.TimeoutError, get, timeout=TIMEOUT2)
|
|
self.assertTimingAlmostEqual(get.elapsed, TIMEOUT2)
|
|
|
|
def test_imap(self):
|
|
it = self.pool.imap(sqr, range(10))
|
|
self.assertEqual(list(it), map(sqr, range(10)))
|
|
|
|
it = self.pool.imap(sqr, range(10))
|
|
for i in range(10):
|
|
self.assertEqual(it.next(), i*i)
|
|
self.assertRaises(StopIteration, it.next)
|
|
|
|
it = self.pool.imap(sqr, range(1000), chunksize=100)
|
|
for i in range(1000):
|
|
self.assertEqual(it.next(), i*i)
|
|
self.assertRaises(StopIteration, it.next)
|
|
|
|
def test_imap_unordered(self):
|
|
it = self.pool.imap_unordered(sqr, range(1000))
|
|
self.assertEqual(sorted(it), map(sqr, range(1000)))
|
|
|
|
it = self.pool.imap_unordered(sqr, range(1000), chunksize=53)
|
|
self.assertEqual(sorted(it), map(sqr, range(1000)))
|
|
|
|
def test_make_pool(self):
|
|
self.assertRaises(ValueError, multiprocessing.Pool, -1)
|
|
self.assertRaises(ValueError, multiprocessing.Pool, 0)
|
|
|
|
p = multiprocessing.Pool(3)
|
|
self.assertEqual(3, len(p._pool))
|
|
p.close()
|
|
p.join()
|
|
|
|
def test_terminate(self):
|
|
if self.TYPE == 'manager':
|
|
# On Unix a forked process increfs each shared object to
|
|
# which its parent process held a reference. If the
|
|
# forked process gets terminated then there is likely to
|
|
# be a reference leak. So to prevent
|
|
# _TestZZZNumberOfObjects from failing we skip this test
|
|
# when using a manager.
|
|
return
|
|
|
|
result = self.pool.map_async(
|
|
time.sleep, [0.1 for i in range(10000)], chunksize=1
|
|
)
|
|
self.pool.terminate()
|
|
join = TimingWrapper(self.pool.join)
|
|
join()
|
|
self.assertTrue(join.elapsed < 0.2)
|
|
|
|
def test_empty_iterable(self):
|
|
# See Issue 12157
|
|
p = self.Pool(1)
|
|
|
|
self.assertEqual(p.map(sqr, []), [])
|
|
self.assertEqual(list(p.imap(sqr, [])), [])
|
|
self.assertEqual(list(p.imap_unordered(sqr, [])), [])
|
|
self.assertEqual(p.map_async(sqr, []).get(), [])
|
|
|
|
p.close()
|
|
p.join()
|
|
|
|
def unpickleable_result():
|
|
return lambda: 42
|
|
|
|
class _TestPoolWorkerErrors(BaseTestCase):
|
|
ALLOWED_TYPES = ('processes', )
|
|
|
|
def test_unpickleable_result(self):
|
|
from multiprocessing.pool import MaybeEncodingError
|
|
p = multiprocessing.Pool(2)
|
|
|
|
# Make sure we don't lose pool processes because of encoding errors.
|
|
for iteration in range(20):
|
|
res = p.apply_async(unpickleable_result)
|
|
self.assertRaises(MaybeEncodingError, res.get)
|
|
|
|
p.close()
|
|
p.join()
|
|
|
|
class _TestPoolWorkerLifetime(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes', )
|
|
def test_pool_worker_lifetime(self):
|
|
p = multiprocessing.Pool(3, maxtasksperchild=10)
|
|
self.assertEqual(3, len(p._pool))
|
|
origworkerpids = [w.pid for w in p._pool]
|
|
# Run many tasks so each worker gets replaced (hopefully)
|
|
results = []
|
|
for i in range(100):
|
|
results.append(p.apply_async(sqr, (i, )))
|
|
# Fetch the results and verify we got the right answers,
|
|
# also ensuring all the tasks have completed.
|
|
for (j, res) in enumerate(results):
|
|
self.assertEqual(res.get(), sqr(j))
|
|
# Refill the pool
|
|
p._repopulate_pool()
|
|
# Wait until all workers are alive
|
|
# (countdown * DELTA = 5 seconds max startup process time)
|
|
countdown = 50
|
|
while countdown and not all(w.is_alive() for w in p._pool):
|
|
countdown -= 1
|
|
time.sleep(DELTA)
|
|
finalworkerpids = [w.pid for w in p._pool]
|
|
# All pids should be assigned. See issue #7805.
|
|
self.assertNotIn(None, origworkerpids)
|
|
self.assertNotIn(None, finalworkerpids)
|
|
# Finally, check that the worker pids have changed
|
|
self.assertNotEqual(sorted(origworkerpids), sorted(finalworkerpids))
|
|
p.close()
|
|
p.join()
|
|
|
|
def test_pool_worker_lifetime_early_close(self):
|
|
# Issue #10332: closing a pool whose workers have limited lifetimes
|
|
# before all the tasks completed would make join() hang.
|
|
p = multiprocessing.Pool(3, maxtasksperchild=1)
|
|
results = []
|
|
for i in range(6):
|
|
results.append(p.apply_async(sqr, (i, 0.3)))
|
|
p.close()
|
|
p.join()
|
|
# check the results
|
|
for (j, res) in enumerate(results):
|
|
self.assertEqual(res.get(), sqr(j))
|
|
|
|
|
|
#
|
|
# Test that manager has expected number of shared objects left
|
|
#
|
|
|
|
class _TestZZZNumberOfObjects(BaseTestCase):
|
|
# Because test cases are sorted alphabetically, this one will get
|
|
# run after all the other tests for the manager. It tests that
|
|
# there have been no "reference leaks" for the manager's shared
|
|
# objects. Note the comment in _TestPool.test_terminate().
|
|
ALLOWED_TYPES = ('manager',)
|
|
|
|
def test_number_of_objects(self):
|
|
EXPECTED_NUMBER = 1 # the pool object is still alive
|
|
multiprocessing.active_children() # discard dead process objs
|
|
gc.collect() # do garbage collection
|
|
refs = self.manager._number_of_objects()
|
|
debug_info = self.manager._debug_info()
|
|
if refs != EXPECTED_NUMBER:
|
|
print self.manager._debug_info()
|
|
print debug_info
|
|
|
|
self.assertEqual(refs, EXPECTED_NUMBER)
|
|
|
|
#
|
|
# Test of creating a customized manager class
|
|
#
|
|
|
|
from multiprocessing.managers import BaseManager, BaseProxy, RemoteError
|
|
|
|
class FooBar(object):
|
|
def f(self):
|
|
return 'f()'
|
|
def g(self):
|
|
raise ValueError
|
|
def _h(self):
|
|
return '_h()'
|
|
|
|
def baz():
|
|
for i in xrange(10):
|
|
yield i*i
|
|
|
|
class IteratorProxy(BaseProxy):
|
|
_exposed_ = ('next', '__next__')
|
|
def __iter__(self):
|
|
return self
|
|
def next(self):
|
|
return self._callmethod('next')
|
|
def __next__(self):
|
|
return self._callmethod('__next__')
|
|
|
|
class MyManager(BaseManager):
|
|
pass
|
|
|
|
MyManager.register('Foo', callable=FooBar)
|
|
MyManager.register('Bar', callable=FooBar, exposed=('f', '_h'))
|
|
MyManager.register('baz', callable=baz, proxytype=IteratorProxy)
|
|
|
|
|
|
class _TestMyManager(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('manager',)
|
|
|
|
def test_mymanager(self):
|
|
manager = MyManager()
|
|
manager.start()
|
|
|
|
foo = manager.Foo()
|
|
bar = manager.Bar()
|
|
baz = manager.baz()
|
|
|
|
foo_methods = [name for name in ('f', 'g', '_h') if hasattr(foo, name)]
|
|
bar_methods = [name for name in ('f', 'g', '_h') if hasattr(bar, name)]
|
|
|
|
self.assertEqual(foo_methods, ['f', 'g'])
|
|
self.assertEqual(bar_methods, ['f', '_h'])
|
|
|
|
self.assertEqual(foo.f(), 'f()')
|
|
self.assertRaises(ValueError, foo.g)
|
|
self.assertEqual(foo._callmethod('f'), 'f()')
|
|
self.assertRaises(RemoteError, foo._callmethod, '_h')
|
|
|
|
self.assertEqual(bar.f(), 'f()')
|
|
self.assertEqual(bar._h(), '_h()')
|
|
self.assertEqual(bar._callmethod('f'), 'f()')
|
|
self.assertEqual(bar._callmethod('_h'), '_h()')
|
|
|
|
self.assertEqual(list(baz), [i*i for i in range(10)])
|
|
|
|
manager.shutdown()
|
|
|
|
#
|
|
# Test of connecting to a remote server and using xmlrpclib for serialization
|
|
#
|
|
|
|
_queue = Queue.Queue()
|
|
def get_queue():
|
|
return _queue
|
|
|
|
class QueueManager(BaseManager):
|
|
'''manager class used by server process'''
|
|
QueueManager.register('get_queue', callable=get_queue)
|
|
|
|
class QueueManager2(BaseManager):
|
|
'''manager class which specifies the same interface as QueueManager'''
|
|
QueueManager2.register('get_queue')
|
|
|
|
|
|
SERIALIZER = 'xmlrpclib'
|
|
|
|
class _TestRemoteManager(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('manager',)
|
|
|
|
@classmethod
|
|
def _putter(cls, address, authkey):
|
|
manager = QueueManager2(
|
|
address=address, authkey=authkey, serializer=SERIALIZER
|
|
)
|
|
manager.connect()
|
|
queue = manager.get_queue()
|
|
queue.put(('hello world', None, True, 2.25))
|
|
|
|
def test_remote(self):
|
|
authkey = os.urandom(32)
|
|
|
|
manager = QueueManager(
|
|
address=('localhost', 0), authkey=authkey, serializer=SERIALIZER
|
|
)
|
|
manager.start()
|
|
|
|
p = self.Process(target=self._putter, args=(manager.address, authkey))
|
|
p.daemon = True
|
|
p.start()
|
|
|
|
manager2 = QueueManager2(
|
|
address=manager.address, authkey=authkey, serializer=SERIALIZER
|
|
)
|
|
manager2.connect()
|
|
queue = manager2.get_queue()
|
|
|
|
# Note that xmlrpclib will deserialize object as a list not a tuple
|
|
self.assertEqual(queue.get(), ['hello world', None, True, 2.25])
|
|
|
|
# Because we are using xmlrpclib for serialization instead of
|
|
# pickle this will cause a serialization error.
|
|
self.assertRaises(Exception, queue.put, time.sleep)
|
|
|
|
# Make queue finalizer run before the server is stopped
|
|
del queue
|
|
manager.shutdown()
|
|
|
|
class _TestManagerRestart(BaseTestCase):
|
|
|
|
@classmethod
|
|
def _putter(cls, address, authkey):
|
|
manager = QueueManager(
|
|
address=address, authkey=authkey, serializer=SERIALIZER)
|
|
manager.connect()
|
|
queue = manager.get_queue()
|
|
queue.put('hello world')
|
|
|
|
def test_rapid_restart(self):
|
|
authkey = os.urandom(32)
|
|
manager = QueueManager(
|
|
address=('localhost', 0), authkey=authkey, serializer=SERIALIZER)
|
|
srvr = manager.get_server()
|
|
addr = srvr.address
|
|
# Close the connection.Listener socket which gets opened as a part
|
|
# of manager.get_server(). It's not needed for the test.
|
|
srvr.listener.close()
|
|
manager.start()
|
|
|
|
p = self.Process(target=self._putter, args=(manager.address, authkey))
|
|
p.daemon = True
|
|
p.start()
|
|
queue = manager.get_queue()
|
|
self.assertEqual(queue.get(), 'hello world')
|
|
del queue
|
|
manager.shutdown()
|
|
manager = QueueManager(
|
|
address=addr, authkey=authkey, serializer=SERIALIZER)
|
|
manager.start()
|
|
manager.shutdown()
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
SENTINEL = latin('')
|
|
|
|
class _TestConnection(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes', 'threads')
|
|
|
|
@classmethod
|
|
def _echo(cls, conn):
|
|
for msg in iter(conn.recv_bytes, SENTINEL):
|
|
conn.send_bytes(msg)
|
|
conn.close()
|
|
|
|
def test_connection(self):
|
|
conn, child_conn = self.Pipe()
|
|
|
|
p = self.Process(target=self._echo, args=(child_conn,))
|
|
p.daemon = True
|
|
p.start()
|
|
|
|
seq = [1, 2.25, None]
|
|
msg = latin('hello world')
|
|
longmsg = msg * 10
|
|
arr = array.array('i', range(4))
|
|
|
|
if self.TYPE == 'processes':
|
|
self.assertEqual(type(conn.fileno()), int)
|
|
|
|
self.assertEqual(conn.send(seq), None)
|
|
self.assertEqual(conn.recv(), seq)
|
|
|
|
self.assertEqual(conn.send_bytes(msg), None)
|
|
self.assertEqual(conn.recv_bytes(), msg)
|
|
|
|
if self.TYPE == 'processes':
|
|
buffer = array.array('i', [0]*10)
|
|
expected = list(arr) + [0] * (10 - len(arr))
|
|
self.assertEqual(conn.send_bytes(arr), None)
|
|
self.assertEqual(conn.recv_bytes_into(buffer),
|
|
len(arr) * buffer.itemsize)
|
|
self.assertEqual(list(buffer), expected)
|
|
|
|
buffer = array.array('i', [0]*10)
|
|
expected = [0] * 3 + list(arr) + [0] * (10 - 3 - len(arr))
|
|
self.assertEqual(conn.send_bytes(arr), None)
|
|
self.assertEqual(conn.recv_bytes_into(buffer, 3 * buffer.itemsize),
|
|
len(arr) * buffer.itemsize)
|
|
self.assertEqual(list(buffer), expected)
|
|
|
|
buffer = bytearray(latin(' ' * 40))
|
|
self.assertEqual(conn.send_bytes(longmsg), None)
|
|
try:
|
|
res = conn.recv_bytes_into(buffer)
|
|
except multiprocessing.BufferTooShort, e:
|
|
self.assertEqual(e.args, (longmsg,))
|
|
else:
|
|
self.fail('expected BufferTooShort, got %s' % res)
|
|
|
|
poll = TimingWrapper(conn.poll)
|
|
|
|
self.assertEqual(poll(), False)
|
|
self.assertTimingAlmostEqual(poll.elapsed, 0)
|
|
|
|
self.assertEqual(poll(TIMEOUT1), False)
|
|
self.assertTimingAlmostEqual(poll.elapsed, TIMEOUT1)
|
|
|
|
conn.send(None)
|
|
|
|
self.assertEqual(poll(TIMEOUT1), True)
|
|
self.assertTimingAlmostEqual(poll.elapsed, 0)
|
|
|
|
self.assertEqual(conn.recv(), None)
|
|
|
|
really_big_msg = latin('X') * (1024 * 1024 * 16) # 16Mb
|
|
conn.send_bytes(really_big_msg)
|
|
self.assertEqual(conn.recv_bytes(), really_big_msg)
|
|
|
|
conn.send_bytes(SENTINEL) # tell child to quit
|
|
child_conn.close()
|
|
|
|
if self.TYPE == 'processes':
|
|
self.assertEqual(conn.readable, True)
|
|
self.assertEqual(conn.writable, True)
|
|
self.assertRaises(EOFError, conn.recv)
|
|
self.assertRaises(EOFError, conn.recv_bytes)
|
|
|
|
p.join()
|
|
|
|
def test_duplex_false(self):
|
|
reader, writer = self.Pipe(duplex=False)
|
|
self.assertEqual(writer.send(1), None)
|
|
self.assertEqual(reader.recv(), 1)
|
|
if self.TYPE == 'processes':
|
|
self.assertEqual(reader.readable, True)
|
|
self.assertEqual(reader.writable, False)
|
|
self.assertEqual(writer.readable, False)
|
|
self.assertEqual(writer.writable, True)
|
|
self.assertRaises(IOError, reader.send, 2)
|
|
self.assertRaises(IOError, writer.recv)
|
|
self.assertRaises(IOError, writer.poll)
|
|
|
|
def test_spawn_close(self):
|
|
# We test that a pipe connection can be closed by parent
|
|
# process immediately after child is spawned. On Windows this
|
|
# would have sometimes failed on old versions because
|
|
# child_conn would be closed before the child got a chance to
|
|
# duplicate it.
|
|
conn, child_conn = self.Pipe()
|
|
|
|
p = self.Process(target=self._echo, args=(child_conn,))
|
|
p.daemon = True
|
|
p.start()
|
|
child_conn.close() # this might complete before child initializes
|
|
|
|
msg = latin('hello')
|
|
conn.send_bytes(msg)
|
|
self.assertEqual(conn.recv_bytes(), msg)
|
|
|
|
conn.send_bytes(SENTINEL)
|
|
conn.close()
|
|
p.join()
|
|
|
|
def test_sendbytes(self):
|
|
if self.TYPE != 'processes':
|
|
return
|
|
|
|
msg = latin('abcdefghijklmnopqrstuvwxyz')
|
|
a, b = self.Pipe()
|
|
|
|
a.send_bytes(msg)
|
|
self.assertEqual(b.recv_bytes(), msg)
|
|
|
|
a.send_bytes(msg, 5)
|
|
self.assertEqual(b.recv_bytes(), msg[5:])
|
|
|
|
a.send_bytes(msg, 7, 8)
|
|
self.assertEqual(b.recv_bytes(), msg[7:7+8])
|
|
|
|
a.send_bytes(msg, 26)
|
|
self.assertEqual(b.recv_bytes(), latin(''))
|
|
|
|
a.send_bytes(msg, 26, 0)
|
|
self.assertEqual(b.recv_bytes(), latin(''))
|
|
|
|
self.assertRaises(ValueError, a.send_bytes, msg, 27)
|
|
|
|
self.assertRaises(ValueError, a.send_bytes, msg, 22, 5)
|
|
|
|
self.assertRaises(ValueError, a.send_bytes, msg, 26, 1)
|
|
|
|
self.assertRaises(ValueError, a.send_bytes, msg, -1)
|
|
|
|
self.assertRaises(ValueError, a.send_bytes, msg, 4, -1)
|
|
|
|
@classmethod
|
|
def _is_fd_assigned(cls, fd):
|
|
try:
|
|
os.fstat(fd)
|
|
except OSError as e:
|
|
if e.errno == errno.EBADF:
|
|
return False
|
|
raise
|
|
else:
|
|
return True
|
|
|
|
@classmethod
|
|
def _writefd(cls, conn, data, create_dummy_fds=False):
|
|
if create_dummy_fds:
|
|
for i in range(0, 256):
|
|
if not cls._is_fd_assigned(i):
|
|
os.dup2(conn.fileno(), i)
|
|
fd = reduction.recv_handle(conn)
|
|
if msvcrt:
|
|
fd = msvcrt.open_osfhandle(fd, os.O_WRONLY)
|
|
os.write(fd, data)
|
|
os.close(fd)
|
|
|
|
@unittest.skipUnless(HAS_REDUCTION, "test needs multiprocessing.reduction")
|
|
def test_fd_transfer(self):
|
|
if self.TYPE != 'processes':
|
|
self.skipTest("only makes sense with processes")
|
|
conn, child_conn = self.Pipe(duplex=True)
|
|
|
|
p = self.Process(target=self._writefd, args=(child_conn, b"foo"))
|
|
p.daemon = True
|
|
p.start()
|
|
with open(test_support.TESTFN, "wb") as f:
|
|
fd = f.fileno()
|
|
if msvcrt:
|
|
fd = msvcrt.get_osfhandle(fd)
|
|
reduction.send_handle(conn, fd, p.pid)
|
|
p.join()
|
|
with open(test_support.TESTFN, "rb") as f:
|
|
self.assertEqual(f.read(), b"foo")
|
|
|
|
@unittest.skipUnless(HAS_REDUCTION, "test needs multiprocessing.reduction")
|
|
@unittest.skipIf(sys.platform == "win32",
|
|
"test semantics don't make sense on Windows")
|
|
@unittest.skipIf(MAXFD <= 256,
|
|
"largest assignable fd number is too small")
|
|
@unittest.skipUnless(hasattr(os, "dup2"),
|
|
"test needs os.dup2()")
|
|
def test_large_fd_transfer(self):
|
|
# With fd > 256 (issue #11657)
|
|
if self.TYPE != 'processes':
|
|
self.skipTest("only makes sense with processes")
|
|
conn, child_conn = self.Pipe(duplex=True)
|
|
|
|
p = self.Process(target=self._writefd, args=(child_conn, b"bar", True))
|
|
p.daemon = True
|
|
p.start()
|
|
with open(test_support.TESTFN, "wb") as f:
|
|
fd = f.fileno()
|
|
for newfd in range(256, MAXFD):
|
|
if not self._is_fd_assigned(newfd):
|
|
break
|
|
else:
|
|
self.fail("could not find an unassigned large file descriptor")
|
|
os.dup2(fd, newfd)
|
|
try:
|
|
reduction.send_handle(conn, newfd, p.pid)
|
|
finally:
|
|
os.close(newfd)
|
|
p.join()
|
|
with open(test_support.TESTFN, "rb") as f:
|
|
self.assertEqual(f.read(), b"bar")
|
|
|
|
@classmethod
|
|
def _send_data_without_fd(self, conn):
|
|
os.write(conn.fileno(), b"\0")
|
|
|
|
@unittest.skipUnless(HAS_REDUCTION, "test needs multiprocessing.reduction")
|
|
@unittest.skipIf(sys.platform == "win32", "doesn't make sense on Windows")
|
|
def test_missing_fd_transfer(self):
|
|
# Check that exception is raised when received data is not
|
|
# accompanied by a file descriptor in ancillary data.
|
|
if self.TYPE != 'processes':
|
|
self.skipTest("only makes sense with processes")
|
|
conn, child_conn = self.Pipe(duplex=True)
|
|
|
|
p = self.Process(target=self._send_data_without_fd, args=(child_conn,))
|
|
p.daemon = True
|
|
p.start()
|
|
self.assertRaises(RuntimeError, reduction.recv_handle, conn)
|
|
p.join()
|
|
|
|
class _TestListenerClient(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes', 'threads')
|
|
|
|
@classmethod
|
|
def _test(cls, address):
|
|
conn = cls.connection.Client(address)
|
|
conn.send('hello')
|
|
conn.close()
|
|
|
|
def test_listener_client(self):
|
|
for family in self.connection.families:
|
|
l = self.connection.Listener(family=family)
|
|
p = self.Process(target=self._test, args=(l.address,))
|
|
p.daemon = True
|
|
p.start()
|
|
conn = l.accept()
|
|
self.assertEqual(conn.recv(), 'hello')
|
|
p.join()
|
|
l.close()
|
|
|
|
def test_issue14725(self):
|
|
l = self.connection.Listener()
|
|
p = self.Process(target=self._test, args=(l.address,))
|
|
p.daemon = True
|
|
p.start()
|
|
time.sleep(1)
|
|
# On Windows the client process should by now have connected,
|
|
# written data and closed the pipe handle by now. This causes
|
|
# ConnectNamdedPipe() to fail with ERROR_NO_DATA. See Issue
|
|
# 14725.
|
|
conn = l.accept()
|
|
self.assertEqual(conn.recv(), 'hello')
|
|
conn.close()
|
|
p.join()
|
|
l.close()
|
|
|
|
#
|
|
# Test of sending connection and socket objects between processes
|
|
#
|
|
"""
|
|
class _TestPicklingConnections(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes',)
|
|
|
|
def _listener(self, conn, families):
|
|
for fam in families:
|
|
l = self.connection.Listener(family=fam)
|
|
conn.send(l.address)
|
|
new_conn = l.accept()
|
|
conn.send(new_conn)
|
|
|
|
if self.TYPE == 'processes':
|
|
l = socket.socket()
|
|
l.bind(('localhost', 0))
|
|
conn.send(l.getsockname())
|
|
l.listen(1)
|
|
new_conn, addr = l.accept()
|
|
conn.send(new_conn)
|
|
|
|
conn.recv()
|
|
|
|
def _remote(self, conn):
|
|
for (address, msg) in iter(conn.recv, None):
|
|
client = self.connection.Client(address)
|
|
client.send(msg.upper())
|
|
client.close()
|
|
|
|
if self.TYPE == 'processes':
|
|
address, msg = conn.recv()
|
|
client = socket.socket()
|
|
client.connect(address)
|
|
client.sendall(msg.upper())
|
|
client.close()
|
|
|
|
conn.close()
|
|
|
|
def test_pickling(self):
|
|
try:
|
|
multiprocessing.allow_connection_pickling()
|
|
except ImportError:
|
|
return
|
|
|
|
families = self.connection.families
|
|
|
|
lconn, lconn0 = self.Pipe()
|
|
lp = self.Process(target=self._listener, args=(lconn0, families))
|
|
lp.daemon = True
|
|
lp.start()
|
|
lconn0.close()
|
|
|
|
rconn, rconn0 = self.Pipe()
|
|
rp = self.Process(target=self._remote, args=(rconn0,))
|
|
rp.daemon = True
|
|
rp.start()
|
|
rconn0.close()
|
|
|
|
for fam in families:
|
|
msg = ('This connection uses family %s' % fam).encode('ascii')
|
|
address = lconn.recv()
|
|
rconn.send((address, msg))
|
|
new_conn = lconn.recv()
|
|
self.assertEqual(new_conn.recv(), msg.upper())
|
|
|
|
rconn.send(None)
|
|
|
|
if self.TYPE == 'processes':
|
|
msg = latin('This connection uses a normal socket')
|
|
address = lconn.recv()
|
|
rconn.send((address, msg))
|
|
if hasattr(socket, 'fromfd'):
|
|
new_conn = lconn.recv()
|
|
self.assertEqual(new_conn.recv(100), msg.upper())
|
|
else:
|
|
# XXX On Windows with Py2.6 need to backport fromfd()
|
|
discard = lconn.recv_bytes()
|
|
|
|
lconn.send(None)
|
|
|
|
rconn.close()
|
|
lconn.close()
|
|
|
|
lp.join()
|
|
rp.join()
|
|
"""
|
|
#
|
|
#
|
|
#
|
|
|
|
class _TestHeap(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes',)
|
|
|
|
def test_heap(self):
|
|
iterations = 5000
|
|
maxblocks = 50
|
|
blocks = []
|
|
|
|
# create and destroy lots of blocks of different sizes
|
|
for i in xrange(iterations):
|
|
size = int(random.lognormvariate(0, 1) * 1000)
|
|
b = multiprocessing.heap.BufferWrapper(size)
|
|
blocks.append(b)
|
|
if len(blocks) > maxblocks:
|
|
i = random.randrange(maxblocks)
|
|
del blocks[i]
|
|
|
|
# get the heap object
|
|
heap = multiprocessing.heap.BufferWrapper._heap
|
|
|
|
# verify the state of the heap
|
|
all = []
|
|
occupied = 0
|
|
heap._lock.acquire()
|
|
self.addCleanup(heap._lock.release)
|
|
for L in heap._len_to_seq.values():
|
|
for arena, start, stop in L:
|
|
all.append((heap._arenas.index(arena), start, stop,
|
|
stop-start, 'free'))
|
|
for arena, start, stop in heap._allocated_blocks:
|
|
all.append((heap._arenas.index(arena), start, stop,
|
|
stop-start, 'occupied'))
|
|
occupied += (stop-start)
|
|
|
|
all.sort()
|
|
|
|
for i in range(len(all)-1):
|
|
(arena, start, stop) = all[i][:3]
|
|
(narena, nstart, nstop) = all[i+1][:3]
|
|
self.assertTrue((arena != narena and nstart == 0) or
|
|
(stop == nstart))
|
|
|
|
def test_free_from_gc(self):
|
|
# Check that freeing of blocks by the garbage collector doesn't deadlock
|
|
# (issue #12352).
|
|
# Make sure the GC is enabled, and set lower collection thresholds to
|
|
# make collections more frequent (and increase the probability of
|
|
# deadlock).
|
|
if not gc.isenabled():
|
|
gc.enable()
|
|
self.addCleanup(gc.disable)
|
|
thresholds = gc.get_threshold()
|
|
self.addCleanup(gc.set_threshold, *thresholds)
|
|
gc.set_threshold(10)
|
|
|
|
# perform numerous block allocations, with cyclic references to make
|
|
# sure objects are collected asynchronously by the gc
|
|
for i in range(5000):
|
|
a = multiprocessing.heap.BufferWrapper(1)
|
|
b = multiprocessing.heap.BufferWrapper(1)
|
|
# circular references
|
|
a.buddy = b
|
|
b.buddy = a
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
class _Foo(Structure):
|
|
_fields_ = [
|
|
('x', c_int),
|
|
('y', c_double)
|
|
]
|
|
|
|
class _TestSharedCTypes(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes',)
|
|
|
|
def setUp(self):
|
|
if not HAS_SHAREDCTYPES:
|
|
self.skipTest("requires multiprocessing.sharedctypes")
|
|
|
|
@classmethod
|
|
def _double(cls, x, y, foo, arr, string):
|
|
x.value *= 2
|
|
y.value *= 2
|
|
foo.x *= 2
|
|
foo.y *= 2
|
|
string.value *= 2
|
|
for i in range(len(arr)):
|
|
arr[i] *= 2
|
|
|
|
def test_sharedctypes(self, lock=False):
|
|
x = Value('i', 7, lock=lock)
|
|
y = Value(c_double, 1.0/3.0, lock=lock)
|
|
foo = Value(_Foo, 3, 2, lock=lock)
|
|
arr = self.Array('d', range(10), lock=lock)
|
|
string = self.Array('c', 20, lock=lock)
|
|
string.value = latin('hello')
|
|
|
|
p = self.Process(target=self._double, args=(x, y, foo, arr, string))
|
|
p.daemon = True
|
|
p.start()
|
|
p.join()
|
|
|
|
self.assertEqual(x.value, 14)
|
|
self.assertAlmostEqual(y.value, 2.0/3.0)
|
|
self.assertEqual(foo.x, 6)
|
|
self.assertAlmostEqual(foo.y, 4.0)
|
|
for i in range(10):
|
|
self.assertAlmostEqual(arr[i], i*2)
|
|
self.assertEqual(string.value, latin('hellohello'))
|
|
|
|
def test_synchronize(self):
|
|
self.test_sharedctypes(lock=True)
|
|
|
|
def test_copy(self):
|
|
foo = _Foo(2, 5.0)
|
|
bar = copy(foo)
|
|
foo.x = 0
|
|
foo.y = 0
|
|
self.assertEqual(bar.x, 2)
|
|
self.assertAlmostEqual(bar.y, 5.0)
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
class _TestFinalize(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes',)
|
|
|
|
@classmethod
|
|
def _test_finalize(cls, conn):
|
|
class Foo(object):
|
|
pass
|
|
|
|
a = Foo()
|
|
util.Finalize(a, conn.send, args=('a',))
|
|
del a # triggers callback for a
|
|
|
|
b = Foo()
|
|
close_b = util.Finalize(b, conn.send, args=('b',))
|
|
close_b() # triggers callback for b
|
|
close_b() # does nothing because callback has already been called
|
|
del b # does nothing because callback has already been called
|
|
|
|
c = Foo()
|
|
util.Finalize(c, conn.send, args=('c',))
|
|
|
|
d10 = Foo()
|
|
util.Finalize(d10, conn.send, args=('d10',), exitpriority=1)
|
|
|
|
d01 = Foo()
|
|
util.Finalize(d01, conn.send, args=('d01',), exitpriority=0)
|
|
d02 = Foo()
|
|
util.Finalize(d02, conn.send, args=('d02',), exitpriority=0)
|
|
d03 = Foo()
|
|
util.Finalize(d03, conn.send, args=('d03',), exitpriority=0)
|
|
|
|
util.Finalize(None, conn.send, args=('e',), exitpriority=-10)
|
|
|
|
util.Finalize(None, conn.send, args=('STOP',), exitpriority=-100)
|
|
|
|
# call multiprocessing's cleanup function then exit process without
|
|
# garbage collecting locals
|
|
util._exit_function()
|
|
conn.close()
|
|
os._exit(0)
|
|
|
|
def test_finalize(self):
|
|
conn, child_conn = self.Pipe()
|
|
|
|
p = self.Process(target=self._test_finalize, args=(child_conn,))
|
|
p.daemon = True
|
|
p.start()
|
|
p.join()
|
|
|
|
result = [obj for obj in iter(conn.recv, 'STOP')]
|
|
self.assertEqual(result, ['a', 'b', 'd10', 'd03', 'd02', 'd01', 'e'])
|
|
|
|
#
|
|
# Test that from ... import * works for each module
|
|
#
|
|
|
|
class _TestImportStar(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes',)
|
|
|
|
def test_import(self):
|
|
modules = [
|
|
'multiprocessing', 'multiprocessing.connection',
|
|
'multiprocessing.heap', 'multiprocessing.managers',
|
|
'multiprocessing.pool', 'multiprocessing.process',
|
|
'multiprocessing.synchronize', 'multiprocessing.util'
|
|
]
|
|
|
|
if HAS_REDUCTION:
|
|
modules.append('multiprocessing.reduction')
|
|
|
|
if c_int is not None:
|
|
# This module requires _ctypes
|
|
modules.append('multiprocessing.sharedctypes')
|
|
|
|
for name in modules:
|
|
__import__(name)
|
|
mod = sys.modules[name]
|
|
|
|
for attr in getattr(mod, '__all__', ()):
|
|
self.assertTrue(
|
|
hasattr(mod, attr),
|
|
'%r does not have attribute %r' % (mod, attr)
|
|
)
|
|
|
|
#
|
|
# Quick test that logging works -- does not test logging output
|
|
#
|
|
|
|
class _TestLogging(BaseTestCase):
|
|
|
|
ALLOWED_TYPES = ('processes',)
|
|
|
|
def test_enable_logging(self):
|
|
logger = multiprocessing.get_logger()
|
|
logger.setLevel(util.SUBWARNING)
|
|
self.assertTrue(logger is not None)
|
|
logger.debug('this will not be printed')
|
|
logger.info('nor will this')
|
|
logger.setLevel(LOG_LEVEL)
|
|
|
|
@classmethod
|
|
def _test_level(cls, conn):
|
|
logger = multiprocessing.get_logger()
|
|
conn.send(logger.getEffectiveLevel())
|
|
|
|
def test_level(self):
|
|
LEVEL1 = 32
|
|
LEVEL2 = 37
|
|
|
|
logger = multiprocessing.get_logger()
|
|
root_logger = logging.getLogger()
|
|
root_level = root_logger.level
|
|
|
|
reader, writer = multiprocessing.Pipe(duplex=False)
|
|
|
|
logger.setLevel(LEVEL1)
|
|
p = self.Process(target=self._test_level, args=(writer,))
|
|
p.daemon = True
|
|
p.start()
|
|
self.assertEqual(LEVEL1, reader.recv())
|
|
|
|
logger.setLevel(logging.NOTSET)
|
|
root_logger.setLevel(LEVEL2)
|
|
p = self.Process(target=self._test_level, args=(writer,))
|
|
p.daemon = True
|
|
p.start()
|
|
self.assertEqual(LEVEL2, reader.recv())
|
|
|
|
root_logger.setLevel(root_level)
|
|
logger.setLevel(level=LOG_LEVEL)
|
|
|
|
|
|
# class _TestLoggingProcessName(BaseTestCase):
|
|
#
|
|
# def handle(self, record):
|
|
# assert record.processName == multiprocessing.current_process().name
|
|
# self.__handled = True
|
|
#
|
|
# def test_logging(self):
|
|
# handler = logging.Handler()
|
|
# handler.handle = self.handle
|
|
# self.__handled = False
|
|
# # Bypass getLogger() and side-effects
|
|
# logger = logging.getLoggerClass()(
|
|
# 'multiprocessing.test.TestLoggingProcessName')
|
|
# logger.addHandler(handler)
|
|
# logger.propagate = False
|
|
#
|
|
# logger.warn('foo')
|
|
# assert self.__handled
|
|
|
|
#
|
|
# Test to verify handle verification, see issue 3321
|
|
#
|
|
|
|
class TestInvalidHandle(unittest.TestCase):
|
|
|
|
@unittest.skipIf(WIN32, "skipped on Windows")
|
|
def test_invalid_handles(self):
|
|
conn = _multiprocessing.Connection(44977608)
|
|
self.assertRaises(IOError, conn.poll)
|
|
self.assertRaises(IOError, _multiprocessing.Connection, -1)
|
|
|
|
#
|
|
# Functions used to create test cases from the base ones in this module
|
|
#
|
|
|
|
def get_attributes(Source, names):
|
|
d = {}
|
|
for name in names:
|
|
obj = getattr(Source, name)
|
|
if type(obj) == type(get_attributes):
|
|
obj = staticmethod(obj)
|
|
d[name] = obj
|
|
return d
|
|
|
|
def create_test_cases(Mixin, type):
|
|
result = {}
|
|
glob = globals()
|
|
Type = type.capitalize()
|
|
|
|
for name in glob.keys():
|
|
if name.startswith('_Test'):
|
|
base = glob[name]
|
|
if type in base.ALLOWED_TYPES:
|
|
newname = 'With' + Type + name[1:]
|
|
class Temp(base, unittest.TestCase, Mixin):
|
|
pass
|
|
result[newname] = Temp
|
|
Temp.__name__ = newname
|
|
Temp.__module__ = Mixin.__module__
|
|
return result
|
|
|
|
#
|
|
# Create test cases
|
|
#
|
|
|
|
class ProcessesMixin(object):
|
|
TYPE = 'processes'
|
|
Process = multiprocessing.Process
|
|
locals().update(get_attributes(multiprocessing, (
|
|
'Queue', 'Lock', 'RLock', 'Semaphore', 'BoundedSemaphore',
|
|
'Condition', 'Event', 'Value', 'Array', 'RawValue',
|
|
'RawArray', 'current_process', 'active_children', 'Pipe',
|
|
'connection', 'JoinableQueue', 'Pool'
|
|
)))
|
|
|
|
testcases_processes = create_test_cases(ProcessesMixin, type='processes')
|
|
globals().update(testcases_processes)
|
|
|
|
|
|
class ManagerMixin(object):
|
|
TYPE = 'manager'
|
|
Process = multiprocessing.Process
|
|
manager = object.__new__(multiprocessing.managers.SyncManager)
|
|
locals().update(get_attributes(manager, (
|
|
'Queue', 'Lock', 'RLock', 'Semaphore', 'BoundedSemaphore',
|
|
'Condition', 'Event', 'Value', 'Array', 'list', 'dict',
|
|
'Namespace', 'JoinableQueue', 'Pool'
|
|
)))
|
|
|
|
testcases_manager = create_test_cases(ManagerMixin, type='manager')
|
|
globals().update(testcases_manager)
|
|
|
|
|
|
class ThreadsMixin(object):
|
|
TYPE = 'threads'
|
|
Process = multiprocessing.dummy.Process
|
|
locals().update(get_attributes(multiprocessing.dummy, (
|
|
'Queue', 'Lock', 'RLock', 'Semaphore', 'BoundedSemaphore',
|
|
'Condition', 'Event', 'Value', 'Array', 'current_process',
|
|
'active_children', 'Pipe', 'connection', 'dict', 'list',
|
|
'Namespace', 'JoinableQueue', 'Pool'
|
|
)))
|
|
|
|
testcases_threads = create_test_cases(ThreadsMixin, type='threads')
|
|
globals().update(testcases_threads)
|
|
|
|
class OtherTest(unittest.TestCase):
|
|
# TODO: add more tests for deliver/answer challenge.
|
|
def test_deliver_challenge_auth_failure(self):
|
|
class _FakeConnection(object):
|
|
def recv_bytes(self, size):
|
|
return b'something bogus'
|
|
def send_bytes(self, data):
|
|
pass
|
|
self.assertRaises(multiprocessing.AuthenticationError,
|
|
multiprocessing.connection.deliver_challenge,
|
|
_FakeConnection(), b'abc')
|
|
|
|
def test_answer_challenge_auth_failure(self):
|
|
class _FakeConnection(object):
|
|
def __init__(self):
|
|
self.count = 0
|
|
def recv_bytes(self, size):
|
|
self.count += 1
|
|
if self.count == 1:
|
|
return multiprocessing.connection.CHALLENGE
|
|
elif self.count == 2:
|
|
return b'something bogus'
|
|
return b''
|
|
def send_bytes(self, data):
|
|
pass
|
|
self.assertRaises(multiprocessing.AuthenticationError,
|
|
multiprocessing.connection.answer_challenge,
|
|
_FakeConnection(), b'abc')
|
|
|
|
#
|
|
# Test Manager.start()/Pool.__init__() initializer feature - see issue 5585
|
|
#
|
|
|
|
def initializer(ns):
|
|
ns.test += 1
|
|
|
|
class TestInitializers(unittest.TestCase):
|
|
def setUp(self):
|
|
self.mgr = multiprocessing.Manager()
|
|
self.ns = self.mgr.Namespace()
|
|
self.ns.test = 0
|
|
|
|
def tearDown(self):
|
|
self.mgr.shutdown()
|
|
|
|
def test_manager_initializer(self):
|
|
m = multiprocessing.managers.SyncManager()
|
|
self.assertRaises(TypeError, m.start, 1)
|
|
m.start(initializer, (self.ns,))
|
|
self.assertEqual(self.ns.test, 1)
|
|
m.shutdown()
|
|
|
|
def test_pool_initializer(self):
|
|
self.assertRaises(TypeError, multiprocessing.Pool, initializer=1)
|
|
p = multiprocessing.Pool(1, initializer, (self.ns,))
|
|
p.close()
|
|
p.join()
|
|
self.assertEqual(self.ns.test, 1)
|
|
|
|
#
|
|
# Issue 5155, 5313, 5331: Test process in processes
|
|
# Verifies os.close(sys.stdin.fileno) vs. sys.stdin.close() behavior
|
|
#
|
|
|
|
def _ThisSubProcess(q):
|
|
try:
|
|
item = q.get(block=False)
|
|
except Queue.Empty:
|
|
pass
|
|
|
|
def _TestProcess(q):
|
|
queue = multiprocessing.Queue()
|
|
subProc = multiprocessing.Process(target=_ThisSubProcess, args=(queue,))
|
|
subProc.daemon = True
|
|
subProc.start()
|
|
subProc.join()
|
|
|
|
def _afunc(x):
|
|
return x*x
|
|
|
|
def pool_in_process():
|
|
pool = multiprocessing.Pool(processes=4)
|
|
x = pool.map(_afunc, [1, 2, 3, 4, 5, 6, 7])
|
|
|
|
class _file_like(object):
|
|
def __init__(self, delegate):
|
|
self._delegate = delegate
|
|
self._pid = None
|
|
|
|
@property
|
|
def cache(self):
|
|
pid = os.getpid()
|
|
# There are no race conditions since fork keeps only the running thread
|
|
if pid != self._pid:
|
|
self._pid = pid
|
|
self._cache = []
|
|
return self._cache
|
|
|
|
def write(self, data):
|
|
self.cache.append(data)
|
|
|
|
def flush(self):
|
|
self._delegate.write(''.join(self.cache))
|
|
self._cache = []
|
|
|
|
class TestStdinBadfiledescriptor(unittest.TestCase):
|
|
|
|
def test_queue_in_process(self):
|
|
queue = multiprocessing.Queue()
|
|
proc = multiprocessing.Process(target=_TestProcess, args=(queue,))
|
|
proc.start()
|
|
proc.join()
|
|
|
|
def test_pool_in_process(self):
|
|
p = multiprocessing.Process(target=pool_in_process)
|
|
p.start()
|
|
p.join()
|
|
|
|
def test_flushing(self):
|
|
sio = StringIO()
|
|
flike = _file_like(sio)
|
|
flike.write('foo')
|
|
proc = multiprocessing.Process(target=lambda: flike.flush())
|
|
flike.flush()
|
|
assert sio.getvalue() == 'foo'
|
|
|
|
#
|
|
# Test interaction with socket timeouts - see Issue #6056
|
|
#
|
|
|
|
class TestTimeouts(unittest.TestCase):
|
|
@classmethod
|
|
def _test_timeout(cls, child, address):
|
|
time.sleep(1)
|
|
child.send(123)
|
|
child.close()
|
|
conn = multiprocessing.connection.Client(address)
|
|
conn.send(456)
|
|
conn.close()
|
|
|
|
def test_timeout(self):
|
|
old_timeout = socket.getdefaulttimeout()
|
|
try:
|
|
socket.setdefaulttimeout(0.1)
|
|
parent, child = multiprocessing.Pipe(duplex=True)
|
|
l = multiprocessing.connection.Listener(family='AF_INET')
|
|
p = multiprocessing.Process(target=self._test_timeout,
|
|
args=(child, l.address))
|
|
p.start()
|
|
child.close()
|
|
self.assertEqual(parent.recv(), 123)
|
|
parent.close()
|
|
conn = l.accept()
|
|
self.assertEqual(conn.recv(), 456)
|
|
conn.close()
|
|
l.close()
|
|
p.join(10)
|
|
finally:
|
|
socket.setdefaulttimeout(old_timeout)
|
|
|
|
testcases_other = [OtherTest, TestInvalidHandle, TestInitializers,
|
|
TestStdinBadfiledescriptor, TestTimeouts]
|
|
|
|
#
|
|
#
|
|
#
|
|
|
|
def test_main(run=None):
|
|
if sys.platform.startswith("linux"):
|
|
try:
|
|
lock = multiprocessing.RLock()
|
|
except OSError:
|
|
raise unittest.SkipTest("OSError raises on RLock creation, see issue 3111!")
|
|
|
|
check_enough_semaphores()
|
|
|
|
if run is None:
|
|
from test.test_support import run_unittest as run
|
|
|
|
util.get_temp_dir() # creates temp directory for use by all processes
|
|
|
|
multiprocessing.get_logger().setLevel(LOG_LEVEL)
|
|
|
|
ProcessesMixin.pool = multiprocessing.Pool(4)
|
|
ThreadsMixin.pool = multiprocessing.dummy.Pool(4)
|
|
ManagerMixin.manager.__init__()
|
|
ManagerMixin.manager.start()
|
|
ManagerMixin.pool = ManagerMixin.manager.Pool(4)
|
|
|
|
testcases = (
|
|
sorted(testcases_processes.values(), key=lambda tc:tc.__name__) +
|
|
sorted(testcases_threads.values(), key=lambda tc:tc.__name__) +
|
|
sorted(testcases_manager.values(), key=lambda tc:tc.__name__) +
|
|
testcases_other
|
|
)
|
|
|
|
loadTestsFromTestCase = unittest.defaultTestLoader.loadTestsFromTestCase
|
|
suite = unittest.TestSuite(loadTestsFromTestCase(tc) for tc in testcases)
|
|
# (ncoghlan): Whether or not sys.exc_clear is executed by the threading
|
|
# module during these tests is at least platform dependent and possibly
|
|
# non-deterministic on any given platform. So we don't mind if the listed
|
|
# warnings aren't actually raised.
|
|
with test_support.check_py3k_warnings(
|
|
(".+__(get|set)slice__ has been removed", DeprecationWarning),
|
|
(r"sys.exc_clear\(\) not supported", DeprecationWarning),
|
|
quiet=True):
|
|
run(suite)
|
|
|
|
ThreadsMixin.pool.terminate()
|
|
ProcessesMixin.pool.terminate()
|
|
ManagerMixin.pool.terminate()
|
|
ManagerMixin.manager.shutdown()
|
|
|
|
del ProcessesMixin.pool, ThreadsMixin.pool, ManagerMixin.pool
|
|
|
|
def main():
|
|
test_main(unittest.TextTestRunner(verbosity=2).run)
|
|
|
|
if __name__ == '__main__':
|
|
main()
|