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Hq�Qc @ sw d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d d l Z d e f d � � YZ d � Z d S( i����Nt lockc B sS e Z d Z d Z d d d d � Z d � Z d � Z d � Z d � Z d � Z
RS( s� An advisory lock held by one process to control access to a set
of files. Non-cooperating processes or incorrectly written scripts
can ignore Mercurial's locking scheme and stomp all over the
repository, so don't do that.
Typically used via localrepository.lock() to lock the repository
store (.hg/store/) or localrepository.wlock() to lock everything
else under .hg/.i����c C sS | | _ d | _ | | _ | | _ | | _ g | _ t j � | _ | j � d S( Ni (
t ft heldt timeoutt releasefnt desct postreleaset ost getpidt pidR ( t selft fileR R R ( ( s4 /usr/lib64/python2.7/site-packages/mercurial/lock.pyt __init__ s c C s< | j r. t j d d t d d �d | _ n | j � d S( Ns$ use lock.release instead of del lockt categoryt
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| j � � q Xq Wd S( Ni i ( R t Truet trylockt errort LockHeldt timet sleept errnot ETIMEDOUTt filenameR t locker( R
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k r� | j � } | d k r t j t j | j | j | � � q qt j | j | j | j | j � � qV XqV Wd S( Ni s %s:%s( R R t _hostt Nonet sockett gethostnameR t utilt makelockR t OSErrort IOErrorR t EEXISTt testlockR R t EAGAINR t LockUnavailablet strerrorR ( R
t locknamet whyR ( ( s4 /usr/lib64/python2.7/site-packages/mercurial/lock.pyR E s$
c C s y t j | j � } Wn, t k
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r| SXd S( so return id of locker if lock is valid, else None.
If old-style lock, we cannot tell what machine locker is on.
with new-style lock, if locker is on this machine, we can
see if locker is alive. If locker is on this machine but
not alive, we can safely break lock.
The lock file is only deleted when None is returned.
t :i s .breakR i N( R# t readlockR R% R t ENOENTR t splitt
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c C s� | j d k r! | j d 8_ n� | j d k r� d | _ t j � | j k rR d S| j rh | j � n y t j | j � Wn t k
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} | � q� Wn d S( s� release the lock and execute callback function if any
If the lock has been acquired multiple times, the actual release is
delayed to the last release call.i i N(
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