1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
import multiprocessing
import sys
import time
import unittest
from concurrent import futures
from concurrent.futures._base import (
PENDING, RUNNING, CANCELLED, CANCELLED_AND_NOTIFIED, FINISHED, Future,
)
from concurrent.futures.process import _check_system_limits
from test import support
from test.support import threading_helper
def create_future(state=PENDING, exception=None, result=None):
f = Future()
f._state = state
f._exception = exception
f._result = result
return f
PENDING_FUTURE = create_future(state=PENDING)
RUNNING_FUTURE = create_future(state=RUNNING)
CANCELLED_FUTURE = create_future(state=CANCELLED)
CANCELLED_AND_NOTIFIED_FUTURE = create_future(state=CANCELLED_AND_NOTIFIED)
EXCEPTION_FUTURE = create_future(state=FINISHED, exception=OSError())
SUCCESSFUL_FUTURE = create_future(state=FINISHED, result=42)
class BaseTestCase(unittest.TestCase):
def setUp(self):
self._thread_key = threading_helper.threading_setup()
def tearDown(self):
support.reap_children()
threading_helper.threading_cleanup(*self._thread_key)
class ExecutorMixin:
worker_count = 5
executor_kwargs = {}
def setUp(self):
super().setUp()
self.t1 = time.monotonic()
if hasattr(self, "ctx"):
self.executor = self.executor_type(
max_workers=self.worker_count,
mp_context=self.get_context(),
**self.executor_kwargs)
else:
self.executor = self.executor_type(
max_workers=self.worker_count,
**self.executor_kwargs)
def tearDown(self):
self.executor.shutdown(wait=True)
self.executor = None
dt = time.monotonic() - self.t1
if support.verbose:
print("%.2fs" % dt, end=' ')
self.assertLess(dt, 300, "synchronization issue: test lasted too long")
super().tearDown()
def get_context(self):
return multiprocessing.get_context(self.ctx)
class ThreadPoolMixin(ExecutorMixin):
executor_type = futures.ThreadPoolExecutor
class ProcessPoolForkMixin(ExecutorMixin):
executor_type = futures.ProcessPoolExecutor
ctx = "fork"
def get_context(self):
try:
_check_system_limits()
except NotImplementedError:
self.skipTest("ProcessPoolExecutor unavailable on this system")
if sys.platform == "win32":
self.skipTest("require unix system")
return super().get_context()
class ProcessPoolSpawnMixin(ExecutorMixin):
executor_type = futures.ProcessPoolExecutor
ctx = "spawn"
def get_context(self):
try:
_check_system_limits()
except NotImplementedError:
self.skipTest("ProcessPoolExecutor unavailable on this system")
return super().get_context()
class ProcessPoolForkserverMixin(ExecutorMixin):
executor_type = futures.ProcessPoolExecutor
ctx = "forkserver"
def get_context(self):
try:
_check_system_limits()
except NotImplementedError:
self.skipTest("ProcessPoolExecutor unavailable on this system")
if sys.platform == "win32":
self.skipTest("require unix system")
return super().get_context()
def create_executor_tests(remote_globals, mixin, bases=(BaseTestCase,),
executor_mixins=(ThreadPoolMixin,
ProcessPoolForkMixin,
ProcessPoolForkserverMixin,
ProcessPoolSpawnMixin)):
def strip_mixin(name):
if name.endswith(('Mixin', 'Tests')):
return name[:-5]
elif name.endswith('Test'):
return name[:-4]
else:
return name
module = remote_globals['__name__']
for exe in executor_mixins:
name = ("%s%sTest"
% (strip_mixin(exe.__name__), strip_mixin(mixin.__name__)))
cls = type(name, (mixin,) + (exe,) + bases, {'__module__': module})
remote_globals[name] = cls
def setup_module():
unittest.addModuleCleanup(multiprocessing.util._cleanup_tests)
thread_info = threading_helper.threading_setup()
unittest.addModuleCleanup(threading_helper.threading_cleanup, *thread_info)
|
