�
��abc @@ sp d d l m Z d d l Z d d l Z d d l m Z m Z m Z m Z m Z m
Z
d e f d � � YZ d S( i ( t absolute_importNi ( t LockBaset
LockFailedt NotLockedt NotMyLockt LockTimeoutt
AlreadyLockedt LinkLockFilec B@ s> e Z d Z d d � Z d � Z d � Z d � Z d � Z RS( s� Lock access to a file using atomic property of link(2).
>>> lock = LinkLockFile('somefile')
>>> lock = LinkLockFile('somefile', threaded=False)
c C@ s~ y t | j d � j � Wn$ t k
r@ t d | j � � n X| d k rS | n | j } t j � } | d k r� | d k r� | | 7} n x� t ryy t j
| j | j � Wn� t k
rqt j
| j � j } | d k r� d S| d k rKt j � | k rKt j | j � | d k r5t d | j � � qKt d | j � � n t j | d k rg| d pjd � q� Xd Sq� Wd S( Nt wbs failed to create %si i s& Timeout waiting to acquire lock for %ss %s is already lockedi
g�������?( t opent unique_namet closet IOErrorR t Nonet timeoutt timet Truet ost linkt lock_filet OSErrort statt st_nlinkt unlinkR t pathR t sleep( t selfR t end_timet nlinks( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/lockfile/linklockfile.pyt acquire s0
'c C@ sq | j � s" t d | j � � n+ t j j | j � sM t d | j � � n t j | j � t j | j � d S( Ns %s is not lockeds %s is locked, but not by me( t is_lockedR R R t existsR
R R R ( R ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/lockfile/linklockfile.pyt release7 s c C@ s t j j | j � S( N( R R R R ( R ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/lockfile/linklockfile.pyR ? s c C@ s: | j � o9 t j j | j � o9 t j | j � j d k S( Ni ( R R R R R
R R ( R ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/lockfile/linklockfile.pyt i_am_lockingB s c C@ s, t j j | j � r( t j | j � n d S( N( R R R R R ( R ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/lockfile/linklockfile.pyt
break_lockG s N( t __name__t
__module__t __doc__R
R R R R! R" ( ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/lockfile/linklockfile.pyR
s & ( t
__future__R R R t R R R R R R R ( ( ( sE /usr/lib/python2.7/site-packages/pip/_vendor/lockfile/linklockfile.pyt s .