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# Copyright 2018 gRPC authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import threading
import unittest
from grpc._cython import cygrpc
def _get_number_active_threads():
return cygrpc._fork_state.active_thread_count._num_active_threads
@unittest.skipIf(os.name == 'nt', 'Posix-specific tests')
class ForkPosixTester(unittest.TestCase):
def setUp(self):
self._saved_fork_support_flag = cygrpc._GRPC_ENABLE_FORK_SUPPORT
cygrpc._GRPC_ENABLE_FORK_SUPPORT = True
def testForkManagedThread(self):
def cb():
self.assertEqual(1, _get_number_active_threads())
thread = cygrpc.ForkManagedThread(cb)
thread.start()
thread.join()
self.assertEqual(0, _get_number_active_threads())
def testForkManagedThreadThrowsException(self):
def cb():
self.assertEqual(1, _get_number_active_threads())
raise Exception("expected exception")
thread = cygrpc.ForkManagedThread(cb)
thread.start()
thread.join()
self.assertEqual(0, _get_number_active_threads())
def tearDown(self):
cygrpc._GRPC_ENABLE_FORK_SUPPORT = self._saved_fork_support_flag
@unittest.skipUnless(os.name == 'nt', 'Windows-specific tests')
class ForkWindowsTester(unittest.TestCase):
def testForkManagedThreadIsNoOp(self):
def cb():
pass
thread = cygrpc.ForkManagedThread(cb)
thread.start()
thread.join()
if __name__ == '__main__':
unittest.main(verbosity=2)
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