Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/tensorflow/python/summary/writer/writer_cache.py: 62%

1# Copyright 2015 The TensorFlow Authors. All Rights Reserved. 

2# 

3# Licensed under the Apache License, Version 2.0 (the "License"); 

4# you may not use this file except in compliance with the License. 

5# You may obtain a copy of the License at 

6# 

7# http://www.apache.org/licenses/LICENSE-2.0 

8# 

9# Unless required by applicable law or agreed to in writing, software 

10# distributed under the License is distributed on an "AS IS" BASIS, 

11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 

12# See the License for the specific language governing permissions and 

13# limitations under the License. 

14# ============================================================================== 

15"""A cache for FileWriters.""" 

16 

17import threading 

18 

19from tensorflow.python.framework import ops 

20from tensorflow.python.summary.writer.writer import FileWriter 

21from tensorflow.python.util.tf_export import tf_export 

22 

23 

24@tf_export(v1=['summary.FileWriterCache']) 

25class FileWriterCache(object): 

26 """Cache for file writers. 

27 

28 This class caches file writers, one per directory. 

29 """ 

30 # Cache, keyed by directory. 

31 _cache = {} 

32 

33 # Lock protecting _FILE_WRITERS. 

34 _lock = threading.RLock() 

35 

36 @staticmethod 

37 def clear(): 

38 """Clear cached summary writers. Currently only used for unit tests.""" 

39 with FileWriterCache._lock: 

40 # Make sure all the writers are closed now (otherwise open file handles 

41 # may hang around, blocking deletions on Windows). 

42 for item in FileWriterCache._cache.values(): 

43 item.close() 

44 FileWriterCache._cache = {} 

45 

46 @staticmethod 

47 def get(logdir): 

48 """Returns the FileWriter for the specified directory. 

49 

50 Args: 

51 logdir: str, name of the directory. 

52 

53 Returns: 

54 A `FileWriter`. 

55 """ 

56 with FileWriterCache._lock: 

57 if logdir not in FileWriterCache._cache: 

58 FileWriterCache._cache[logdir] = FileWriter( 

59 logdir, graph=ops.get_default_graph()) 

60 return FileWriterCache._cache[logdir]