ó ‹²,]c@sddZeZddlZddlZddlmZddlZddlm Z ddl m Z m Z d„Z ddlmZejdks×dd lmZdd lmZdd lmZdd lmZeZnaeZddlZdd lmZdZdZd„Zd„ZeZd„Zd„Zd„Zddd„ƒYZd„Z ddgZ!dS(sŽ Filesystem-based interprocess mutex. Taken from the Twisted project. Distributed under the MIT (Expat) license. Changes by the Spyder Team to the original module: * Rewrite kill Windows function to make it more reliable. * Detect if the process that owns the lock is an Spyder one. Adapted from src/twisted/python/lockfile.py of the `Twisted project `_. iÿÿÿÿN(ttime(trunning_under_pytest(tPY2tto_binary_stringcCs8trtttƒdƒƒStttƒdƒƒSdS(Niè(Rtstrtlongt _uniquefloattint(((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pytunique"s(trenametnt(tkill(tsymlink(treadlink(tremove(twintypesiicCs„tjj}|jtd|ƒ}|dkr1tStjƒ}|j|tj |ƒƒ}|dk}|j |ƒ|pƒ|j t kS(s/Taken from https://www.madebuild.org/blog/?p=30i( tctypestwindlltkernel32t OpenProcesstPROCESS_QUERY_INFORMATIONtFalseRtDWORDtGetExitCodeProcesstbyreft CloseHandletvaluet STILL_ACTIVE(tpidRthandlet exit_codetretvalt is_running((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pyt_is_pid_running<s      cCs)t|ƒs!ttjdƒ‚ndSdS(N(R!tOSErrorterrnotESRCHtNone(Rtsignal((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pyR Os cCsÈ|dtƒd}tjj|dƒ}tj|ƒt|dƒ}|jt|ƒƒ|jƒ|j ƒyt ||ƒWnCytj |ƒtj |ƒWnt tfk r¼dSX‚nXdS(Nt.s.newlinkR twb(Rtostpathtjointmkdirt_opentwriteRtflushtcloseR RtrmdirtIOErrorR"(Rtfilenamet newlinknamet newvalnametf((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pyR Xs     cCs˜y"ttjj|dƒdƒ}WnOtk rs}|jtjksX|jtjkrmt|jdƒ‚n‚n!X|j ƒj ƒ}|j ƒ|SdS(NR trb( R-R)R*R+R2R#tENOENTtEIOR"R%treadtdecodeR0(R3tfObjtetresult((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pyR ms"$ cCs-tjtjj|dƒƒtj|ƒdS(NR (R)RR*R+R1(R3((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pytrmlinkystFilesystemLockcBs5eZdZdZeZd„Zd„Zd„Z RS(s A mutex. This relies on the filesystem property that creating a symlink is an atomic operation and that it will fail if the symlink already exists. Deleting the symlink will release the lock. @ivar name: The name of the file associated with this lock. @ivar clean: Indicates whether this lock was released cleanly by its last owner. Only meaningful after C{lock} has been called and returns True. @ivar locked: Indicates whether the lock is currently held by this object. cCs ||_dS(N(tname(tselfRA((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pyt__init__•scCsLt}x?trGy tttjƒƒ|jƒWnÿtk r0}trf|jtj tj fkrft S|jtj kr*yt |jƒ}Wn_tk r»}|jtjkrµq n‚n2tk rì}træ|jtj kræt S‚nXyÀtd k rtt|ƒdƒntjt|ƒƒ}tddddddgƒ}tƒr^|jdƒntd „|jƒd Dƒƒ}||@g}t|ƒs¬ttjd ƒ‚nWnvtk r%}|jtjkryt|jƒWn.tk r}|jtjkr q n‚nXt }q n‚nXt S‚nXt|_||_tSWd S( sÏ Acquire this lock. @rtype: C{bool} @return: True if the lock is acquired, false otherwise. @raise: Any exception os.symlink() may raise, other than EEXIST. itspydertspyder3s spyder.exes spyder3.exes bootstrap.pysspyder-script.pys runtests.pycss!|]}tjj|ƒVqdS(N(R)R*tbasename(t.0targ((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pys ÍsisNo such processN(tTrueR RR)tgetpidRAR"t_windowsR#tEACCESR9RtEEXISTR R8R2R R%RtpsutiltProcesstsetRtaddtcmdlinetanyR$R?tlockedtclean(RBRUR=Rtptnamest argumentst conditions((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pytlock˜s`   !         cCsZt|jƒ}t|ƒtjƒkr@td|jfƒ‚nt|jƒt|_dS(sÕ Release this lock. This deletes the directory with the given name. @raise: Any exception os.readlink() may raise, or ValueError if the lock is not owned by this process. s!Lock %r not owned by this processN( R RARR)RJt ValueErrorR?RRT(RBR((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pytunlockès  N( t__name__t __module__t__doc__R%RURRTRCRZR\(((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pyR@s   PcCs>t|ƒ}d}z|jƒ}Wd|r8|jƒnX| S(sÚDetermine if the lock of the given name is held or not. @type name: C{str} @param name: The filesystem path to the lock to test @rtype: C{bool} @return: True if the lock is held, False otherwise. N(R@R%RZR\(RAtlR>((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pytisLockedøs Ra(("R_ttypet __metaclass__R#R)RRRNtspyder.config.baseRtspyder.py3compatRRRR RAR R R RR?RRKRIRRRRR!topenR-R@Rat__all__(((s=lib/python2.7/site-packages/spyder/utils/external/lockfile.pyts8        y