/
loader.py
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/
loader.py
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# Copyright 2016 The TensorFlow Authors. All Rights Reserved.
#
# 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.
# ==============================================================================
"""Utilities for loading op libraries.
@@load_op_library
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import os
import re
from tensorflow.python.framework import load_library
from tensorflow.python.platform import resource_loader
def load_op_library(path):
"""Loads a contrib op library from the given path.
NOTE(mrry): On Windows, we currently assume that some contrib op
libraries are statically linked into the main TensorFlow Python
extension DLL - use dynamically linked ops if the .so is present.
Args:
path: An absolute path to a shared object file.
Returns:
A Python module containing the Python wrappers for Ops defined in the
plugin.
"""
if os.name == 'nt':
# To avoid makeing every user_ops aware of windows, re-write
# the file extension from .so to .dll.
path = re.sub(r'\.so$', '.dll', path)
# Currently we have only some user_ops as dlls on windows - don't try
# to load them if the dll is not found.
# TODO(mrry): Once we have all of them this check should be removed.
if not os.path.exists(path):
return None
path = resource_loader.get_path_to_datafile(path)
ret = load_library.load_op_library(path)
assert ret, 'Could not load %s' % path
return ret