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Editing: locks.cpython-311.pyc
� �|�e� � �0 � d Z ddlZdZd� Zej dk r�ddlZddlmZmZm Z m Z m Z m Z m Z mZmZ ddlmZmZmZ dZdZd Z ee � � ee � � k re Zne Ze Z G d � d e� � Z G d � d e � � Z G d� de� � Z ee� � Z ej j Z ee _ eeeeee ge _ ej j! Z!ee!_ eeeee ge!_ d� Z"d� Z#dS ddl$Z$e$j Ze$j Ze$j Zd� Z"d� Z#dS # e%e&f$ r dxZxZZd� Z"d� Z#Y dS w xY w)aw Portable file locking utilities. Based partially on an example by Jonathan Feignberg in the Python Cookbook [1] (licensed under the Python Software License) and a ctypes port by Anatoly Techtonik for Roundup [2] (license [3]). [1] http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/65203 [2] https://sourceforge.net/p/roundup/code/ci/default/tree/roundup/backends/portalocker.py [3] https://sourceforge.net/p/roundup/code/ci/default/tree/COPYING.txt Example Usage:: >>> from django.core.files import locks >>> with open('./file', 'wb') as f: ... locks.lock(f, locks.LOCK_EX) ... f.write('Django') � N)�LOCK_EX�LOCK_SH�LOCK_NB�lock�unlockc �N � t | d� � r| � � � n| S )zCGet a filedescriptor from something which could be a file or an fd.�fileno)�hasattrr ��fs �9/usr/lib/python3/dist-packages/django/core/files/locks.py�_fdr s# � � ��H�-�-� 4�1�8�8�:�:�:�1�4� �nt) �POINTER� Structure�Union�byref�c_int64�c_ulong�c_void_p�sizeof�windll)�BOOL�DWORD�HANDLE� � c � � e Zd ZdefdefgZdS )�_OFFSET�Offset� OffsetHighN)�__name__� __module__� __qualname__r �_fields_� r r r r 2 s% � � � � � � �u� � �5� !�#���r r c �$ � e Zd ZdgZdefdefgZdS )� _OFFSET_UNION�_offset�PointerN)r# r$ r% � _anonymous_r �PVOIDr& r' r r r) r) 7 s, � � � � � � �k� � �� � �� � ���r r) c �0 � e Zd ZdgZdefdefdefdefgZdS )� OVERLAPPED� _offset_union�Internal� InternalHigh�hEventN)r# r$ r% r, � ULONG_PTRr) r r& r' r r r/ r/ = s= � � � � � �&�'� � �� #� �Y� '� �m� ,� �v� � ���r r/ c � � t j t | � � � � }t � � }t ||dddt |� � � � }t |� � S �Nr l � )�msvcrt� get_osfhandler r/ � LockFileExr �bool)r �flags�hfile� overlapped�rets r r r O sL � ��$�S��V�V�,�,�� �\�\� ����q�!�Z��z�9J�9J�K�K���C�y�y�r c � � t j t | � � � � }t � � }t |dddt |� � � � }t |� � S r6 )r7 r8 r r/ � UnlockFileExr r: )r r< r= r> s r r r U sJ � ��$�S��V�V�,�,�� �\�\� ��5�!�Q� �E�*�4E�4E�F�F���C�y�y�r c �n � t j t | � � |� � dS # t $ r Y dS w xY w)NTF)�fcntl�flockr �BlockingIOError�r r; s r r r m sF � � �� �C��F�F�E�*�*�*��t��"� � � � �u�u� ���s �"& � 4�4c �^ � t j t | � � t j � � dS �NT)rB rC r �LOCK_UNr s r r r t s! � � �K��A���� � .� .� .��4r c � � dS )NFr' rE s r r r e s � ��5r c � � dS rG r' r s r r r i s � ��4r )'�__doc__�os�__all__r �namer7 �ctypesr r r r r r r r r �ctypes.wintypesr r r r r r r4 r- r r) r/ � LPOVERLAPPED�kernel32r9 �restype�argtypesr@ r r rB � ImportError�AttributeErrorr' r r �<module>rW s� ��� �$ � � � � =��5� 5� 5� �7�d�?�?��M�M�M�� � � � � � � � � � � � � � � � � � � � � � 4�3�3�3�3�3�3�3�3�3��G��G��G� �v�g���&�&��*�*�*�*�� � �� � �E�#� #� #� #� #�)� #� #� #� � � � � �� � � � � � � � �Y� � � � �7�:�&�&�L� � �+�J� �J��!�5�%���|�L�J���?�/�L� �L�� #�U�E�5�,� G�L��� � � � � � � � �� � � ��-���-���-�� � � � � � � � ��) � � (� � � �&'�'��'�'�G� � � � � � � � � � ���s � C> �>D�D
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