71 lines
1.9 KiB
Python
71 lines
1.9 KiB
Python
# Copyright 2020 The TensorFlow Authors. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# ==============================================================================
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"""Context for building SavedModel."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import print_function
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import contextlib
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import threading
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class SaveContext(threading.local):
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"""A context for building a graph of SavedModel."""
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def __init__(self):
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super(SaveContext, self).__init__()
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self._in_save_context = False
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self._options = None
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def options(self):
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if not self.in_save_context():
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raise ValueError("not in a SaveContext")
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return self._options
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def enter_save_context(self, options):
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self._in_save_context = True
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self._options = options
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def exit_save_context(self):
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self._in_save_context = False
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self._options = None
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def in_save_context(self):
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return self._in_save_context
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_save_context = SaveContext()
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@contextlib.contextmanager
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def save_context(options):
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if in_save_context():
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raise ValueError("already in a SaveContext")
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_save_context.enter_save_context(options)
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try:
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yield
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finally:
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_save_context.exit_save_context()
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def in_save_context():
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"""Returns whether under a save context."""
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return _save_context.in_save_context()
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def get_save_options():
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"""Returns the save options if under a save context."""
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return _save_context.options()
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