File: //lib/python2.7/site-packages/rhn/rhnLockfile.pyo
�
�+Xc @ s� d d l Z d d l Z d d l Z d d l m Z m Z d d l m Z d d l Z d e f d � � YZ d d d � � YZ
d � Z e d k r� e j
e � p� d
� n d S( i����N( t EWOULDBLOCKt EEXIST( t bstrt LockfileLockedExceptionc B s e Z d Z RS( s$ thrown ONLY when pid file is locked.( t __name__t
__module__t __doc__( ( ( s3 /usr/lib/python2.7/site-packages/rhn/rhnLockfile.pyR s t Lockfilec B s, e Z d Z d d � Z d � Z d � Z RS( s� class that provides simple access to a PID-style lockfile.
methods: __init__(lockfile), acquire(), and release()
NOTE: currently acquires upon init
The *.pid file will be acquired, or an LockfileLockedException is raised.
c C s t j j t j j t j j | � � � | _ | | _ | j sQ t j � | _ n t j j | j � } t j j | � s� y t j
| � Wq� t k
r� t j
� d } t | d � r� | j t k r� q� � q� Xn t j | j t j t j Bt j B� | _ | j � d S( sl create (if need be), and acquire lock on lockfile
lockfile example: '/var/run/up2date.pid'
i t errnoN( t ost patht abspatht
expandusert
expandvarst lockfilet pidt getpidt dirnamet existst makedirst OSErrort syst exc_infot hasattrR R t opent O_RDWRt O_CREATt O_SYNCt ft acquire( t selfR R R t e( ( s3 /usr/lib/python2.7/site-packages/rhn/rhnLockfile.pyt __init__$ s"
)c C s� y! t j | j t j t j B� WnS t k
rv t j � d j t k rp t
d | j d t j � d � � qw � n Xt j | j t j
d � t j | j d � t j | j t t | j � d � � d S( s5 acquire the lock; else raise LockfileLockedException.i s cannot acquire lock on %s.i i s
N( t fcntlt flockR t LOCK_EXt LOCK_NBt IOErrorR R R R R R t Nonet F_SETFDR t ftruncatet writeR t strR ( R ( ( s3 /usr/lib/python2.7/site-packages/rhn/rhnLockfile.pyR E s !
#c C s: t j | j � t j | j t j � t j | j � d S( N( R t unlinkR R! R" R t LOCK_UNt close( R ( ( s3 /usr/lib/python2.7/site-packages/rhn/rhnLockfile.pyt releaseV s N( R R R R& R R R. ( ( ( s3 /usr/lib/python2.7/site-packages/rhn/rhnLockfile.pyR s ! c C s� y t d � } Wn< t k
rN t j j d t j � d � t j d � n3 Xd GHd GHd d l } | j d � | j � d GHd S(
s test codes
./test.pids %s
i i����s lock acquired s ...sleeping for 10 secondsNi
s lock released (
R R R t stderrR) R t exitt timet sleepR. ( t LR1 ( ( s3 /usr/lib/python2.7/site-packages/rhn/rhnLockfile.pyt main] s
t __main__i ( ( R R R! R R R t rhn.i18nR t ExceptionR R R4 R R0 ( ( ( s3 /usr/lib/python2.7/site-packages/rhn/rhnLockfile.pyt <module> s B