3 W>p_3&@spdZddlZddlZddlZddlZy ddlZWnek rHdZYnXy ddlZWnek rndZYnXy ddlZWnek rdZYnXye Wne k re Z YnXddddddgZ d Z dad d ZGd dde ZGd ddeZGdddeZGdddeZGdddeZGdddeZdZerHeZn$erTeZneZedk rlejddS)zD A platform independent file lock that supports the with-statement. NTimeout BaseFileLockWindowsFileLock UnixFileLock SoftFileLockFileLockz3.0.12cCstp tjtatS)z0Returns the logger instance used in this module.)_loggerlogging getLogger__name__r r }/home/aldo/Documentos/tesis/tesis/device auto/pruebas pulsar/pruebaclonado/envClonado/lib/python3.6/site-packages/filelock.pyloggerLsrc@s eZdZdZddZddZdS)rzN Raised when the lock could not be acquired in *timeout* seconds. cCs ||_dS)z N) lock_file)selfrr r r __init__[szTimeout.__init__cCsdj|j}|S)Nz)The file lock '{}' could not be acquired.)formatr)rtempr r r __str__bszTimeout.__str__N)r __module__ __qualname____doc__rrr r r r rUsc@s$eZdZddZddZddZdS)_Acquire_ReturnProxycCs ||_dS)N)lock)rrr r r rusz_Acquire_ReturnProxy.__init__cCs|jS)N)r)rr r r __enter__ysz_Acquire_ReturnProxy.__enter__cCs|jjdS)N)rrelease)rexc_type exc_value tracebackr r r __exit__|s z_Acquire_ReturnProxy.__exit__N)r rrrrrr r r r rssrc@seZdZdZdddZeddZeddZejd dZd d Z d d Z eddZ dddZ d ddZ ddZddZddZdS)!rz3 Implements the base class of a file lock. cCs&||_d|_||_tj|_d|_dS)z Nr) _lock_file _lock_file_fdtimeout threadingLock _thread_lock _lock_counter)rrr#r r r rs  zBaseFileLock.__init__cCs|jS)z, The path to the lock file. )r!)rr r r rszBaseFileLock.lock_filecCs|jS)a~ You can set a default timeout for the filelock. It will be used as fallback value in the acquire method, if no timeout value (*None*) is given. If you want to disable the timeout, set it to a negative value. A timeout of 0 means, that there is exactly one attempt to acquire the file lock. .. versionadded:: 2.0.0 )_timeout)rr r r r#szBaseFileLock.timeoutcCst||_dS)z N)floatr()rvaluer r r r#s cCs tdS)z Platform dependent. If the file lock could be acquired, self._lock_file_fd holds the file descriptor of the lock file. N)NotImplementedError)rr r r _acquireszBaseFileLock._acquirecCs tdS)zH Releases the lock and sets self._lock_file_fd to None. N)r+)rr r r _releaseszBaseFileLock._releasecCs |jdk S)z True, if the object holds the file lock. .. versionchanged:: 2.0.0 This was previously a method and is now a property. N)r")rr r r is_lockeds zBaseFileLock.is_lockedN皙?cCs&|dkr|j}|j|jd7_WdQRXt|}|j}tj}yx|j$|jsntjd|||j WdQRX|jrtj d||PqH|dkrtj||krtjd||t |jqHtjd|||tj |qHWWn2|jt d|jd|_WdQRXYnXt|dS) aY Acquires the file lock or fails with a :exc:`Timeout` error. .. code-block:: python # You can use this method in the context manager (recommended) with lock.acquire(): pass # Or use an equivalent try-finally construct: lock.acquire() try: pass finally: lock.release() :arg float timeout: The maximum time waited for the file lock. If ``timeout < 0``, there is no timeout and this method will block until the lock could be acquired. If ``timeout`` is None, the default :attr:`~timeout` is used. :arg float poll_intervall: We check once in *poll_intervall* seconds if we can acquire the file lock. :raises Timeout: if the lock could not be acquired in *timeout* seconds. .. versionchanged:: 2.0.0 This method returns now a *proxy* object instead of *self*, so that it can be used in a with statement without side effects. Nr z#Attempting to acquire lock %s on %szLock %s acquired on %srz"Timeout on acquiring lock %s on %sz2Lock %s not acquired on %s, waiting %s seconds ...)r)r#r&r'idr!timer.rdebugr,inforsleepmaxr)rr#Zpoll_intervalllock_id lock_filename start_timer r r acquires8$  zBaseFileLock.acquireFc Cst|jd|jrf|jd8_|jdks*|rft|}|j}tjd|||jd|_tjd||WdQRXdS)aV Releases the file lock. Please note, that the lock is only completly released, if the lock counter is 0. Also note, that the lock file itself is not automatically deleted. :arg bool force: If true, the lock counter is ignored and the lock is released in every case. r rz#Attempting to release lock %s on %szLock %s released on %sN) r&r.r'r0r!rr2r-r3)rforcer6r7r r r r%s zBaseFileLock.releasecCs |j|S)N)r9)rr r r rBszBaseFileLock.__enter__cCs |jdS)N)r)rrrrr r r rFszBaseFileLock.__exit__cCs|jdddS)NT)r:)r)rr r r __del__Js zBaseFileLock.__del__)r<)Nr/)F)r rrrrpropertyrr#setterr,r-r.r9rrrr;r r r r rs     J c@s eZdZdZddZddZdS)rze Uses the :func:`msvcrt.locking` function to hard lock the lock file on windows systems. cCs|tjtjBtjB}ytj|j|}Wntk r8Yn@Xytj|tj dWn"t tfk rptj |YnX||_ dS)Nr ) osO_RDWRO_CREATO_TRUNCopenr!OSErrormsvcrtlockingZLK_NBLCKIOErrorcloser")r open_modefdr r r r,XszWindowsFileLock._acquirec CsP|j}d|_tj|tjdtj|ytj|jWntk rJYnXdS)Nr ) r"rErFZLK_UNLCKr?rHremover!rD)rrJr r r r-hs zWindowsFileLock._releaseN)r rrrr,r-r r r r rRsc@s eZdZdZddZddZdS)rzR Uses the :func:`fcntl.flock` to hard lock the lock file on unix systems. c CsftjtjBtjB}tj|j|}ytj|tjtj BWn"t t fk rZtj |YnX||_ dS)N)r?r@rArBrCr!fcntlflockZLOCK_EXZLOCK_NBrGrDrHr")rrIrJr r r r,~szUnixFileLock._acquirecCs(|j}d|_tj|tjtj|dS)N)r"rLrMZLOCK_UNr?rH)rrJr r r r-s  zUnixFileLock._releaseN)r rrrr,r-r r r r rys c@s eZdZdZddZddZdS)rz8 Simply watches the existence of the lock file. c CsNtjtjBtjBtjB}ytj|j|}Wnttfk rBYnX||_ dS)N) r?O_WRONLYrAO_EXCLrBrCr!rGrDr")rrIrJr r r r,szSoftFileLock._acquirec Cs<tj|jd|_ytj|jWntk r6YnXdS)N)r?rHr"rKr!rD)rr r r r-s zSoftFileLock._releaseN)r rrrr,r-r r r r rs z only soft file lock is available)rr r?r$r1warnings ImportErrorrErL TimeoutError NameErrorrD__all__ __version__rrrobjectrrrrrrwarnr r r r sX        R'!