G@d|  dZeZddlZddlZddlmZddlmZddl m Z dZ ddlm Z ej dksdd lmZdd lmZdd lmZdd lmZd Zn!dZddlZddlmZdZdZdZdZeZdZdZdZGddZdZddgZdS)a 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 `_. N)time)to_binary_string)is_spyder_processcXtttdzS)Ni)strint _uniquefloat>lib/python3.11/site-packages/spyder/utils/external/lockfile.pyuniquer !s! s<>>D()) * **r )renament)kill)symlink)readlink)removeFT)wintypesiic<tjj}|td|}|dkrdSt j}||tj|}|dk}| ||p|j tkS)z/Taken from https://www.madebuild.org/blog/?p=30rF) ctypeswindllkernel32 OpenProcessPROCESS_QUERY_INFORMATIONrDWORDGetExitCodeProcessbyref CloseHandlevalue STILL_ACTIVE)pidrhandle exit_coderetval is_runnings r _is_pid_runningr&8s=)%%&?CHH Q;;5N$$ ,,V-3\)-D-DFFk V$$$*>agt,,,  s.A,, B;6AB66B;ctjtj|dtj|dS)Nr)r0rr1r2r8)r:s r rmlinkrHus8 "',,x33444 r c,eZdZdZdZdZdZdZdZdS)FilesystemLocka 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. NFc||_dSr()name)selfrLs r __init__zFilesystemLock.__init__s  r cd} tttj|jn#t $r}t r%|jtjtj fvrYd}~dS|jtj kr] t|j}ne#t $r$}|jtj kr Yd}~Yd}~‚d}~wt$r,}t r|jtjkr Yd}~Yd}~dSd}~wwxYw ttt|dt!t|st tjdn#t $rs}|jtjkrX t%|jn6#t $r)}|jtj krYd}~Yd}~Yd}~d}~wwxYwd}Yd}~Yd}~҂d}~wwxYwYd}~dSd}~wwxYwd|_||_dS)z Acquire this lock. @rtype: C{bool} @return: True if the lock is acquired, false otherwise. @raise: Any exception os.symlink() may raise, other than EEXIST. TNFrzNo such process)rrr0getpidrLr)_windowsr*EACCESrCEEXISTrrBr9rrrr+rHlockedclean)rMrUrFr!s r lockzFilesystemLock.locks]4 0 BIKK(($)4444. . . !EL%)+D D D!555557el**&ty11"7el22%HHHHHHHH"#)5<(?(? $)555555555+ S1---0S::K")%+7H"I"IJK"7ek11& &ty 1 1 1 1#*&&&#$7el#:#:%-HHHHHHHHHHHH % &%*E$HHHHHHHH !55555]. ^DKDJ4s3: G*&G%1G%BG% C?'C<G%C C?C:/G%9C::C??G%AEG% G(G>FG GG2G6G%GGG G%GGG%$G%%G*ct|j}t|tjkrt d|jdt |jd|_dS)z Release this lock. This deletes the directory with the given name. @raise: Any exception os.readlink() may raise, or ValueError if the lock is not owned by this process. zLock z not owned by this processFN)rrLrr0rP ValueErrorrHrT)rMr!s r unlockzFilesystemLock.unlocks^ty!! s88ry{{ " "*DIIIOPP Pty r ) __name__ __module__ __qualname____doc__rUrTrNrVrYr r r rJrJ{sX$ E F???B     r rJct|}d} |}|r|n#|r|wwxYw| S)zDetermine 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)rJrVrY)rLlrEs r isLockedr`sh tA F   HHJJJ   HHJJJJ :s >Ar`)r]type __metaclass__r*r0rr spyder.py3compatrspyder.utils.programsrr rrLrrrrrHrQrrrr r&openr4rJr`__all__r r r rgs   %%%%%%------333333+++ w$######HHHMMM!&L===& E*    ggggggggT& Z (r