61 lines
1.9 KiB
Python
61 lines
1.9 KiB
Python
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# Copyright 2015 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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"""A cache for FileWriters."""
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import threading
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from tensorflow.python.framework import ops
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from tensorflow.python.summary.writer.writer import FileWriter
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from tensorflow.python.util.tf_export import tf_export
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@tf_export(v1=['summary.FileWriterCache'])
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class FileWriterCache(object):
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"""Cache for file writers.
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This class caches file writers, one per directory.
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"""
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# Cache, keyed by directory.
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_cache = {}
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# Lock protecting _FILE_WRITERS.
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_lock = threading.RLock()
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@staticmethod
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def clear():
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"""Clear cached summary writers. Currently only used for unit tests."""
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with FileWriterCache._lock:
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# Make sure all the writers are closed now (otherwise open file handles
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# may hang around, blocking deletions on Windows).
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for item in FileWriterCache._cache.values():
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item.close()
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FileWriterCache._cache = {}
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@staticmethod
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def get(logdir):
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"""Returns the FileWriter for the specified directory.
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Args:
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logdir: str, name of the directory.
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Returns:
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A `FileWriter`.
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"""
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with FileWriterCache._lock:
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if logdir not in FileWriterCache._cache:
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FileWriterCache._cache[logdir] = FileWriter(
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logdir, graph=ops.get_default_graph())
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return FileWriterCache._cache[logdir]
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