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Current File : //usr/lib/python2.7/site-packages/pip/_vendor/lockfile/pidlockfile.pyo
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d�ZRS(	sA Lockfile implemented as a Unix PID file.

    The lock file is a normal file named by the attribute `path`.
    A lock's PID file contains a single line of text, containing
    the process ID (PID) of the process that acquired the lock.

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    >>> lock = PIDLockFile('somefile')
    cC@s&tj||t|�|j|_dS(N(Rt__init__tFalsetpathtunique_name(tselfR
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t|j�S(s- Get the PID from the lock file.
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            The lock is held if the PID file for this lock exists.

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texists(R((sD/usr/lib/python2.7/site-packages/pip/_vendor/lockfile/pidlockfile.pyt	is_locked/scC@s"|j�o!tj�|j�kS(s� Test if the lock is held by the current process.

        Returns ``True`` if the current process ID matches the
        number stored in the PID file.
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r}|jtjkrtj�|kr�|dk	r�|dkr�t	d|j��q�t
d|j��ntj|dk	r�|dp�d�q!td|j��qOXdSqOWdS(s� Acquire the lock.

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	&cC@sU|j�s"td|j��n|j�sDtd|j��nt|j�dS(s� Release the lock.

            Removes the PID file to release the lock, or raises an
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RRtremove_existing_pidfile(R((sD/usr/lib/python2.7/site-packages/pip/_vendor/lockfile/pidlockfile.pytrelease_s
cC@st|j�dS(s� Break an existing lock.

            Removes the PID file if it already exists, otherwise does
            nothing.

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__module__t__doc__R	RRRRRR R"R#(((sD/usr/lib/python2.7/site-packages/pip/_vendor/lockfile/pidlockfile.pyRs				 	
cC@sqd}yt|d�}Wntk
r,nAX|j�j�}yt|�}Wntk
rbnX|j�|S(s� Read the PID recorded in the named PID file.

        Read and return the numeric PID recorded as text in the named
        PID file. If the PID file cannot be read, or if the content is
        not a valid PID, return ``None``.

        trN(RtopentIOErrortreadlinetstriptintt
ValueErrortclose(tpidfile_pathtpidtpidfiletline((sD/usr/lib/python2.7/site-packages/pip/_vendor/lockfile/pidlockfile.pyRvs

cC@sotjtjBtjB}d}tj|||�}tj|d�}tj�}|jd|�|j�dS(s� Write the PID in the named PID file.

        Get the numeric process ID (“PID”) of the current process
        and write it to the named file as a line of text.

        i�tws%s
N(	RtO_CREATtO_EXCLtO_WRONLYR(tfdopenRtwriteR.(R/t
open_flagst	open_modet
pidfile_fdR1R0((sD/usr/lib/python2.7/site-packages/pip/_vendor/lockfile/pidlockfile.pyR�s	cC@sCytj|�Wn+tk
r>}|jtjkr8q?�nXdS(s� Remove the named PID file if it exists.

        Removing a PID file that doesn't already exist puts us in the
        desired state, so we ignore the condition if the file does not
        exist.

        N(RtremoveRRtENOENT(R/R((sD/usr/lib/python2.7/site-packages/pip/_vendor/lockfile/pidlockfile.pyR!�s(R&t
__future__RRRRtRRRRRRRRRR!(((sD/usr/lib/python2.7/site-packages/pip/_vendor/lockfile/pidlockfile.pyt<module>
s.]	"