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|
import concurrent.futures as cf
import functools
import itertools
import os
import pathlib
import sys
import time
import unittest
import warnings
import mpi4py.util.pool as pool
from mpi4py import MPI
try:
import mpitestutil as testutil
except ImportError:
sys.path.append(os.fspath(pathlib.Path(__file__).resolve().parent))
import mpitestutil as testutil
import platform
def sqr(x, wait=0.0):
time.sleep(wait)
return x * x
def mul(x, y): # noqa: FURB118
return x * y
def identity(x):
return x
def raising():
raise KeyError("key")
TIMEOUT1 = 0.1
TIMEOUT2 = 0.2
class TimingWrapper:
#
def __init__(self, func):
self.func = func
self.elapsed = None
def __call__(self, *args, **kwds):
t = time.monotonic()
try:
return self.func(*args, **kwds)
finally:
self.elapsed = time.monotonic() - t
class BaseTestPool:
#
PoolType = None
@classmethod
def Pool(cls, *args, **kwargs):
if "coverage" in sys.modules:
kwargs["python_args"] = "-m coverage run".split()
Pool = cls.PoolType
return Pool(*args, **kwargs)
@classmethod
def setUpClass(cls):
super().setUpClass()
cls.pool = cls.Pool(1)
@classmethod
def tearDownClass(cls):
cls.pool.terminate()
cls.pool.join()
cls.pool = None
super().tearDownClass()
@unittest.skipIf('s390x' in platform.machine(), "test_apply fails on s390x (with OpenMPI 4)")
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):
self.assertEqual(
self.pool.map(sqr, range(10)), list(map(sqr, list(range(10))))
)
self.assertEqual(
self.pool.map(sqr, (i for i in range(10))),
list(map(sqr, list(range(10)))),
)
self.assertEqual(
self.pool.map(sqr, list(range(10))),
list(map(sqr, list(range(10)))),
)
self.assertEqual(
self.pool.map(sqr, range(100), chunksize=20),
list(map(sqr, list(range(100)))),
)
self.assertEqual(
self.pool.map(sqr, (i for i in range(100)), chunksize=20),
list(map(sqr, list(range(100)))),
)
self.assertEqual(
self.pool.map(sqr, list(range(100)), chunksize=20),
list(map(sqr, list(range(100)))),
)
def test_imap(self):
self.assertEqual(
list(self.pool.imap(sqr, range(10))),
list(map(sqr, list(range(10)))),
)
self.assertEqual(
list(self.pool.imap(sqr, (i for i in range(10)))),
list(map(sqr, list(range(10)))),
)
self.assertEqual(
list(self.pool.imap(sqr, list(range(10)))),
list(map(sqr, list(range(10)))),
)
it = self.pool.imap(sqr, range(10))
for i in range(10):
self.assertEqual(next(it), i * i)
self.assertRaises(StopIteration, next, it)
it = self.pool.imap(sqr, list(range(10)))
for i in range(10):
self.assertEqual(next(it), i * i)
self.assertRaises(StopIteration, next, it)
it = self.pool.imap(sqr, range(100), chunksize=20)
for i in range(100):
self.assertEqual(next(it), i * i)
self.assertRaises(StopIteration, next, it)
it = self.pool.imap(sqr, list(range(100)), chunksize=20)
for i in range(100):
self.assertEqual(next(it), i * i)
self.assertRaises(StopIteration, next, it)
def test_imap_unordered(self):
args = list(range(10))
result = list(map(sqr, args))
it = self.pool.imap_unordered(sqr, args)
self.assertEqual(sorted(it), result)
it = self.pool.imap_unordered(sqr, iter(args))
self.assertEqual(sorted(it), result)
it = self.pool.imap_unordered(sqr, (a for a in args))
self.assertEqual(sorted(it), result)
args = list(range(100))
result = list(map(sqr, args))
it = self.pool.imap_unordered(sqr, args, chunksize=20)
self.assertEqual(sorted(it), result)
it = self.pool.imap_unordered(sqr, iter(args), chunksize=20)
self.assertEqual(sorted(it), result)
it = self.pool.imap_unordered(sqr, (a for a in args), chunksize=20)
self.assertEqual(sorted(it), result)
def test_starmap(self):
tuples = list(zip(range(10), range(9, -1, -1)))
self.assertEqual(
self.pool.starmap(mul, tuples),
list(itertools.starmap(mul, tuples)),
)
tuples = list(zip(range(100), range(99, -1, -1)))
self.assertEqual(
self.pool.starmap(mul, tuples, chunksize=20),
list(itertools.starmap(mul, tuples)),
)
def test_istarmap(self):
tuples = list(zip(range(10), range(9, -1, -1)))
result = list(itertools.starmap(mul, tuples))
it = self.pool.istarmap(mul, tuples)
self.assertEqual(list(it), result)
iterator = zip(range(10), range(9, -1, -1))
it = self.pool.istarmap(mul, iterator)
self.assertEqual(list(it), result)
tuples = list(zip(range(10), range(9, -1, -1)))
it = self.pool.istarmap(mul, tuples)
for i, j in tuples:
self.assertEqual(next(it), i * j)
self.assertRaises(StopIteration, next, it)
tuples = list(zip(range(100), range(99, -1, -1)))
it = self.pool.istarmap(mul, tuples, chunksize=20)
for i, j in tuples:
self.assertEqual(next(it), i * j)
self.assertRaises(StopIteration, next, it)
def test_istarmap_unordered(self):
tuples = list(zip(range(10), range(9, -1, -1)))
result = list(itertools.starmap(mul, tuples))
it = self.pool.istarmap_unordered(mul, tuples)
self.assertEqual(sorted(it), sorted(result))
iterator = zip(range(10), range(9, -1, -1))
it = self.pool.istarmap_unordered(mul, iterator)
self.assertEqual(sorted(it), sorted(result))
tuples = list(zip(range(100), range(99, -1, -1)))
result = list(itertools.starmap(mul, tuples))
it = self.pool.istarmap_unordered(mul, tuples, chunksize=20)
self.assertEqual(sorted(it), sorted(result))
def test_apply_async(self):
res = self.pool.apply_async(sqr, (7,))
self.assertEqual(res.get(), 49)
res = self.pool.apply_async(sqr, (7, TIMEOUT2))
get = TimingWrapper(res.get)
self.assertEqual(get(), 49)
self.assertLess(get.elapsed, TIMEOUT2 * 10)
self.assertGreater(get.elapsed, TIMEOUT2 / 10)
def test_apply_async_timeout(self):
res = self.pool.apply_async(sqr, (7, TIMEOUT2))
self.assertFalse(res.ready())
self.assertRaises(ValueError, res.successful)
res.wait(TIMEOUT2 / 100)
self.assertFalse(res.ready())
self.assertRaises(ValueError, res.successful)
self.assertRaises(TimeoutError, res.get, TIMEOUT2 / 100)
res.wait()
self.assertTrue(res.ready())
self.assertTrue(res.successful())
self.assertEqual(res.get(), 49)
def test_map_async(self):
args = list(range(10))
self.assertEqual(
self.pool.map_async(sqr, args).get(), list(map(sqr, args))
)
args = list(range(100))
self.assertEqual(
self.pool.map_async(sqr, args, chunksize=20).get(),
list(map(sqr, args)),
)
def test_map_async_callbacks(self):
call_args = []
result = self.pool.map_async(
int,
["1", "2"],
callback=call_args.append,
error_callback=call_args.append,
)
result.wait()
self.assertTrue(result.successful())
self.assertEqual(len(call_args), 1)
self.assertEqual(call_args[0], [1, 2])
result = self.pool.map_async(
int,
["a"],
callback=call_args.append,
error_callback=call_args.append,
)
result.wait()
self.assertFalse(result.successful())
self.assertEqual(len(call_args), 2)
self.assertIsInstance(call_args[1], ValueError)
def test_starmap_async(self):
tuples = list(zip(range(10), range(9, -1, -1)))
self.assertEqual(
self.pool.starmap_async(mul, tuples).get(),
list(itertools.starmap(mul, tuples)),
)
tuples = list(zip(range(1000), range(999, -1, -1)))
self.assertEqual(
self.pool.starmap_async(mul, tuples, chunksize=100).get(),
list(itertools.starmap(mul, tuples)),
)
# ---
def test_terminate(self):
p = self.Pool(1)
for _ in range(100):
p.apply_async(time.sleep, (TIMEOUT1,))
result = p.apply_async(time.sleep, (TIMEOUT1,))
p.terminate()
p.join()
result.wait(TIMEOUT1)
result.wait()
self.assertFalse(result.successful())
self.assertRaises(Exception, result.get, TIMEOUT1)
self.assertRaises(Exception, result.get)
p = self.Pool(1)
args = [TIMEOUT1] * 100
result = p.map_async(time.sleep, args, chunksize=1)
p.terminate()
p.join()
result.wait(TIMEOUT1)
result.wait()
self.assertFalse(result.successful())
self.assertRaises(Exception, result.get, TIMEOUT1)
self.assertRaises(Exception, result.get)
def test_empty_iterable(self):
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.starmap(sqr, []), [])
self.assertEqual(list(p.istarmap(sqr, [])), [])
self.assertEqual(list(p.istarmap_unordered(sqr, [])), [])
self.assertEqual(p.map_async(sqr, []).get(), [])
self.assertEqual(p.starmap_async(mul, []).get(), [])
p.close()
p.join()
def test_enter_exit(self):
pool = self.Pool(1)
with pool:
pass
# with self.assertRaises(ValueError):
# with pool:
# pass
pool.join()
# ---
def test_async_error_callback(self):
p = self.Pool(1)
scratchpad = [None]
def errback(exc):
scratchpad[0] = exc
res = p.apply_async(raising, error_callback=errback)
p.close()
p.join()
self.assertRaises(KeyError, res.get)
self.assertTrue(scratchpad[0])
self.assertIsInstance(scratchpad[0], KeyError)
def test_pool_worker_lifetime_early_close(self):
p = self.Pool(1)
results = []
for i in range(5):
results.append(p.apply_async(sqr, (i, TIMEOUT1)))
p.close()
p.join()
for j, res in enumerate(results):
self.assertEqual(res.get(), sqr(j))
# ---
def test_arg_processes(self):
with self.assertRaises(ValueError):
self.Pool(-1)
with self.assertRaises(ValueError):
self.Pool(0)
def test_arg_initializer(self):
self.Pool(1, initializer=identity, initargs=(123,))
with self.assertRaises(TypeError):
self.Pool(initializer=123)
def test_unsupported_args(self):
with warnings.catch_warnings():
warnings.simplefilter("error")
with self.assertRaises(UserWarning):
with self.Pool(1, maxtasksperchild=1):
pass
with self.assertRaises(UserWarning):
with self.Pool(1, context=object):
pass
# ---
@unittest.skipIf(testutil.disable_mpi_spawn(), "mpi-spawn")
@unittest.skipIf(MPI.COMM_WORLD.Get_size() > 1, "mpi-world-size>1")
class TestProcessPool(BaseTestPool, unittest.TestCase):
#
PoolType = pool.Pool
class TestThreadPool(BaseTestPool, unittest.TestCase):
#
PoolType = pool.ThreadPool
# ---
class ExtraExecutorMixing:
#
def map(
self,
fn,
iterable,
timeout=None,
chunksize=1,
unordered=False,
):
del unordered # ignored, unused
return super().map(
fn,
iterable,
timeout=timeout,
chunksize=chunksize,
)
def starmap(
self,
fn,
iterable,
timeout=None,
chunksize=1,
unordered=False,
):
del unordered # ignored, unused
fn = functools.partial(self._apply_args, fn)
return super().map(
fn,
iterable,
timeout=timeout,
chunksize=chunksize,
)
@staticmethod
def _apply_args(fn, args):
return fn(*args)
class ExtraExecutor(ExtraExecutorMixing, cf.ThreadPoolExecutor):
#
pass
class ExtraPool(pool.Pool):
#
Executor = ExtraExecutor
class TestExtraPool(BaseTestPool, unittest.TestCase):
#
PoolType = ExtraPool
@classmethod
def Pool(cls, *args, **kwargs):
return cls.PoolType(*args, **kwargs)
del TestExtraPool
# ---
if __name__ == "__main__":
unittest.main()
|
