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# Copyright (c) 2016-present, Facebook, Inc.
#
# 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.
##############################################################################
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
from caffe2.python import scope, core
from caffe2.proto import caffe2_pb2
import unittest
import threading
import time
SUCCESS_COUNT = 0
def thread_runner(idx, testobj):
global SUCCESS_COUNT
testobj.assertEquals(scope.CurrentNameScope(), "")
testobj.assertEquals(scope.CurrentDeviceScope(), None)
namescope = "namescope_{}".format(idx)
dsc = core.DeviceOption(caffe2_pb2.CUDA, idx)
with scope.DeviceScope(dsc):
with scope.NameScope(namescope):
testobj.assertEquals(scope.CurrentNameScope(), namescope + "/")
testobj.assertEquals(scope.CurrentDeviceScope(), dsc)
time.sleep(0.01 + idx * 0.01)
testobj.assertEquals(scope.CurrentNameScope(), namescope + "/")
testobj.assertEquals(scope.CurrentDeviceScope(), dsc)
testobj.assertEquals(scope.CurrentNameScope(), "")
testobj.assertEquals(scope.CurrentDeviceScope(), None)
SUCCESS_COUNT += 1
class TestScope(unittest.TestCase):
def testNamescopeBasic(self):
self.assertEquals(scope.CurrentNameScope(), "")
with scope.NameScope("test_scope"):
self.assertEquals(scope.CurrentNameScope(), "test_scope/")
self.assertEquals(scope.CurrentNameScope(), "")
def testNamescopeAssertion(self):
self.assertEquals(scope.CurrentNameScope(), "")
try:
with scope.NameScope("test_scope"):
self.assertEquals(scope.CurrentNameScope(), "test_scope/")
raise Exception()
except Exception:
pass
self.assertEquals(scope.CurrentNameScope(), "")
def testDevicescopeBasic(self):
self.assertEquals(scope.CurrentDeviceScope(), None)
dsc = core.DeviceOption(caffe2_pb2.CUDA, 9)
with scope.DeviceScope(dsc):
self.assertEquals(scope.CurrentDeviceScope(), dsc)
self.assertEquals(scope.CurrentDeviceScope(), None)
def testDevicescopeAssertion(self):
self.assertEquals(scope.CurrentDeviceScope(), None)
dsc = core.DeviceOption(caffe2_pb2.CUDA, 9)
try:
with scope.DeviceScope(dsc):
self.assertEquals(scope.CurrentDeviceScope(), dsc)
raise Exception()
except Exception:
pass
self.assertEquals(scope.CurrentDeviceScope(), None)
def testMultiThreaded(self):
"""
Test that name/device scope are properly local to the thread
and don't interfere
"""
global SUCCESS_COUNT
self.assertEquals(scope.CurrentNameScope(), "")
self.assertEquals(scope.CurrentDeviceScope(), None)
threads = []
for i in range(4):
threads.append(threading.Thread(
target=thread_runner,
args=(i, self),
))
for t in threads:
t.start()
with scope.NameScope("master"):
self.assertEquals(scope.CurrentDeviceScope(), None)
self.assertEquals(scope.CurrentNameScope(), "master/")
for t in threads:
t.join()
self.assertEquals(scope.CurrentNameScope(), "master/")
self.assertEquals(scope.CurrentDeviceScope(), None)
# Ensure all threads succeeded
self.assertEquals(SUCCESS_COUNT, 4)