本文整理汇总了Python中multiprocessing.pool.join方法的典型用法代码示例。如果您正苦于以下问题:Python pool.join方法的具体用法?Python pool.join怎么用?Python pool.join使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类multiprocessing.pool
的用法示例。
在下文中一共展示了pool.join方法的15个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: _normalize_pool_parameter
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
def _normalize_pool_parameter(self, pool_param, param_name):
if isinstance(pool_param, (mp.pool.Pool, mp.pool.ThreadPool)):
return pool_param
if pool_param is None:
return None
if not (hasattr(pool_param, '__hash__') and hasattr(pool_param, '__eq__')): # pragma: no cover
types = [
'multiprocessing.pool.Pool',
'multiprocessing.pool.ThreadPool',
'None', 'hashable',
]
raise TypeError('`{}` parameter should be one of {}'.format(
param_name, ', '.join(types)
))
with self._lock:
if pool_param not in self._aliases:
p = mp.pool.ThreadPool(mp.cpu_count())
self._aliases[pool_param] = p
self._aliases_per_pool[p] = [pool_param]
self._managed_pools.add(p)
return self._aliases[pool_param]
示例2: test_sentinel
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
def test_sentinel(self):
if self.TYPE == "threads":
self.skipTest('test not appropriate for {}'.format(self.TYPE))
event = self.Event()
p = self.Process(target=self._test_sentinel, args=(event,))
with self.assertRaises(ValueError):
p.sentinel
p.start()
self.addCleanup(p.join)
sentinel = p.sentinel
self.assertIsInstance(sentinel, int)
self.assertFalse(wait_for_handle(sentinel, timeout=0.0))
event.set()
p.join()
self.assertTrue(wait_for_handle(sentinel, timeout=1))
#
#
#
示例3: test_stderr_flush
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
def test_stderr_flush(self):
# sys.stderr is flushed at process shutdown (issue #13812)
if self.TYPE == "threads":
self.skipTest('test not appropriate for {}'.format(self.TYPE))
testfn = test.support.TESTFN
self.addCleanup(test.support.unlink, testfn)
proc = self.Process(target=self._test_stderr_flush, args=(testfn,))
proc.start()
proc.join()
with open(testfn, 'r') as f:
err = f.read()
# The whole traceback was printed
self.assertIn("ZeroDivisionError", err)
self.assertIn("test_multiprocessing.py", err)
self.assertIn("1/0 # MARKER", err)
示例4: test_waitfor
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
def test_waitfor(self):
# based on test in test/lock_tests.py
cond = self.Condition()
state = self.Value('i', -1)
p = self.Process(target=self._test_waitfor_f, args=(cond, state))
p.daemon = True
p.start()
with cond:
result = cond.wait_for(lambda : state.value==0)
self.assertTrue(result)
self.assertEqual(state.value, 0)
for i in range(4):
time.sleep(0.01)
with cond:
state.value += 1
cond.notify()
p.join(5)
self.assertFalse(p.is_alive())
self.assertEqual(p.exitcode, 0)
示例5: test_waitfor_timeout
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
def test_waitfor_timeout(self):
# based on test in test/lock_tests.py
cond = self.Condition()
state = self.Value('i', 0)
success = self.Value('i', False)
sem = self.Semaphore(0)
p = self.Process(target=self._test_waitfor_timeout_f,
args=(cond, state, success, sem))
p.daemon = True
p.start()
self.assertTrue(sem.acquire(timeout=10))
# Only increment 3 times, so state == 4 is never reached.
for i in range(3):
time.sleep(0.01)
with cond:
state.value += 1
cond.notify()
p.join(5)
self.assertTrue(success.value)
示例6: test_wait_result
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
def test_wait_result(self):
if isinstance(self, ProcessesMixin) and sys.platform != 'win32':
pid = os.getpid()
else:
pid = None
c = self.Condition()
with c:
self.assertFalse(c.wait(0))
self.assertFalse(c.wait(0.1))
p = self.Process(target=self._test_wait_result, args=(c, pid))
p.start()
self.assertTrue(c.wait(10))
if pid is not None:
self.assertRaises(KeyboardInterrupt, c.wait, 10)
p.join()
示例7: test_value
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
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])
示例8: test_pool_worker_lifetime_early_close
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
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 of creating a customized manager class
#
示例9: test_spawn_close
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
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()
示例10: test_fd_transfer
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
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()
self.addCleanup(test.support.unlink, test.support.TESTFN)
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")
示例11: test_large_fd_transfer
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
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()
self.addCleanup(test.support.unlink, test.support.TESTFN)
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")
示例12: test_dont_merge
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
def test_dont_merge(self):
a, b = self.Pipe()
self.assertEqual(a.poll(0.0), False)
self.assertEqual(a.poll(0.1), False)
p = self.Process(target=self._child_dont_merge, args=(b,))
p.start()
self.assertEqual(a.recv_bytes(), b'a')
self.assertEqual(a.poll(1.0), True)
self.assertEqual(a.poll(1.0), True)
self.assertEqual(a.recv_bytes(), b'b')
self.assertEqual(a.poll(1.0), True)
self.assertEqual(a.poll(1.0), True)
self.assertEqual(a.poll(0.0), True)
self.assertEqual(a.recv_bytes(), b'cd')
p.join()
#
# Test of sending connection and socket objects between processes
#
示例13: test_sharedctypes
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
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', list(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'))
示例14: test_poll_eintr
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
def test_poll_eintr(self):
got_signal = [False]
def record(*args):
got_signal[0] = True
pid = os.getpid()
oldhandler = signal.signal(signal.SIGUSR1, record)
try:
killer = self.Process(target=self._killer, args=(pid,))
killer.start()
try:
p = self.Process(target=time.sleep, args=(2,))
p.start()
p.join()
finally:
killer.join()
self.assertTrue(got_signal[0])
self.assertEqual(p.exitcode, 0)
finally:
signal.signal(signal.SIGUSR1, oldhandler)
#
# Test to verify handle verification, see issue 3321
#
示例15: test_ignore
# 需要导入模块: from multiprocessing import pool [as 别名]
# 或者: from multiprocessing.pool import join [as 别名]
def test_ignore(self):
conn, child_conn = multiprocessing.Pipe()
try:
p = multiprocessing.Process(target=self._test_ignore,
args=(child_conn,))
p.daemon = True
p.start()
child_conn.close()
self.assertEqual(conn.recv(), 'ready')
time.sleep(0.1)
os.kill(p.pid, signal.SIGUSR1)
time.sleep(0.1)
conn.send(1234)
self.assertEqual(conn.recv(), 1234)
time.sleep(0.1)
os.kill(p.pid, signal.SIGUSR1)
self.assertEqual(conn.recv_bytes(), b'x'*(1024*1024))
time.sleep(0.1)
p.join()
finally:
conn.close()