[Reproducible-commits] [diffoscope] 16/21: Also protect mimedb_encoding by a lock

[Joachim Breitner]

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nomeata pushed a commit to branch pu/parallel2
in repository diffoscope.

commit a4eae89cdace5bfefe0a76e9a580844c06a18b8a
Author: Joachim Breitner <mail at joachim-breitner.de>
Date:   Thu Dec 3 12:29:39 2015 +0100

    Also protect mimedb_encoding by a lock
---
 diffoscope/comparators/binary.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/diffoscope/comparators/binary.py b/diffoscope/comparators/binary.py
index 35868e4..5fbd4da 100644
--- a/diffoscope/comparators/binary.py
+++ b/diffoscope/comparators/binary.py
@@ -79,7 +79,12 @@ class File(object, metaclass=ABCMeta):
             if not hasattr(self, '_mimedb_encoding'):
                 self._mimedb_encoding = magic.open(magic.MAGIC_MIME_ENCODING)
                 self._mimedb_encoding.load()
-            return self._mimedb_encoding.file(path)
+                self._mimedb_encoding_lock = Lock()
+            self._mimedb_encoding_lock.acquire()
+            encoding = self._mimedb_encoding.file(path)
+            self._mimedb_encoding_lock.release()
+            return encoding
+
     else: # use python-magic
         @classmethod
         def guess_file_type(self, path):

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